This pull request want to land the analogix_dp driver into drm/bridge directory,
which reused the Exynos DP code, and add Rockchip DP support. And those
patches have been:
* 'drm-next-analogix-dp-v2' of github.com:yakir-Yang/linux:
drm: bridge: analogix/dp: Fix the possible dead lock in bridge disable time
drm: bridge: analogix/dp: add panel prepare/unprepare in suspend/resume time
drm: bridge: analogix/dp: add edid modes parse in get_modes method
drm: bridge: analogix/dp: move hpd detect to connector detect function
drm: bridge: analogix/dp: try force hpd after plug in lookup failed
drm: bridge: analogix/dp: add max link rate and lane count limit for RK3288
drm: bridge: analogix/dp: add some rk3288 special registers setting
dt-bindings: add document for rockchip variant of analogix_dp
drm: rockchip: dp: add rockchip platform dp driver
ARM: dts: exynos/dp: remove some properties that deprecated by analogix_dp driver
dt-bindings: add document for analogix display port driver
drm: bridge: analogix/dp: dynamic parse sync_pol & interlace & dynamic_range
drm: bridge: analogix/dp: remove duplicate configuration of link rate and link count
drm: bridge: analogix/dp: fix some obvious code style
drm: bridge: analogix/dp: rename register constants
drm/exynos: dp: rename implementation specific driver part
drm: bridge: analogix/dp: split exynos dp driver to bridge directory
--- /dev/null
+Analogix Display Port bridge bindings
+
+Required properties for dp-controller:
+ -compatible:
+ platform specific such as:
+ * "samsung,exynos5-dp"
+ * "rockchip,rk3288-dp"
+ -reg:
+ physical base address of the controller and length
+ of memory mapped region.
+ -interrupts:
+ interrupt combiner values.
+ -clocks:
+ from common clock binding: handle to dp clock.
+ -clock-names:
+ from common clock binding: Shall be "dp".
+ -interrupt-parent:
+ phandle to Interrupt combiner node.
+ -phys:
+ from general PHY binding: the phandle for the PHY device.
+ -phy-names:
+ from general PHY binding: Should be "dp".
+
+Optional properties for dp-controller:
+ -force-hpd:
+ Indicate driver need force hpd when hpd detect failed, this
+ is used for some eDP screen which don't have hpd signal.
+ -hpd-gpios:
+ Hotplug detect GPIO.
+ Indicates which GPIO should be used for hotplug detection
+ -port@[X]: SoC specific port nodes with endpoint definitions as defined
+ in Documentation/devicetree/bindings/media/video-interfaces.txt,
+ please refer to the SoC specific binding document:
+ * Documentation/devicetree/bindings/display/exynos/exynos_dp.txt
+ * Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt
+
+[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
+-------------------------------------------------------------------------------
+
+Example:
+
+ dp-controller {
+ compatible = "samsung,exynos5-dp";
+ reg = <0x145b0000 0x10000>;
+ interrupts = <10 3>;
+ interrupt-parent = <&combiner>;
+ clocks = <&clock 342>;
+ clock-names = "dp";
+
+ phys = <&dp_phy>;
+ phy-names = "dp";
+ };
-Device-Tree bindings for Samsung Exynos Embedded DisplayPort Transmitter(eDP)
-
-DisplayPort is industry standard to accommodate the growing board adoption
-of digital display technology within the PC and CE industries.
-It consolidates the internal and external connection methods to reduce device
-complexity and cost. It also supports necessary features for important cross
-industry applications and provides performance scalability to enable the next
-generation of displays that feature higher color depths, refresh rates, and
-display resolutions.
-
-eDP (embedded display port) device is compliant with Embedded DisplayPort
-standard as follows,
-- DisplayPort standard 1.1a for Exynos5250 and Exynos5260.
-- DisplayPort standard 1.3 for Exynos5422s and Exynos5800.
-
-eDP resides between FIMD and panel or FIMD and bridge such as LVDS.
-
The Exynos display port interface should be configured based on
the type of panel connected to it.
from general PHY binding: the phandle for the PHY device.
-phy-names:
from general PHY binding: Should be "dp".
- -samsung,color-space:
- input video data format.
- COLOR_RGB = 0, COLOR_YCBCR422 = 1, COLOR_YCBCR444 = 2
- -samsung,dynamic-range:
- dynamic range for input video data.
- VESA = 0, CEA = 1
- -samsung,ycbcr-coeff:
- YCbCr co-efficients for input video.
- COLOR_YCBCR601 = 0, COLOR_YCBCR709 = 1
- -samsung,color-depth:
- number of bits per colour component.
- COLOR_6 = 0, COLOR_8 = 1, COLOR_10 = 2, COLOR_12 = 3
- -samsung,link-rate:
- link rate supported by the panel.
- LINK_RATE_1_62GBPS = 0x6, LINK_RATE_2_70GBPS = 0x0A
- -samsung,lane-count:
- number of lanes supported by the panel.
- LANE_COUNT1 = 1, LANE_COUNT2 = 2, LANE_COUNT4 = 4
- - display-timings: timings for the connected panel as described by
- Documentation/devicetree/bindings/display/display-timing.txt
Optional properties for dp-controller:
-interlaced:
Hotplug detect GPIO.
Indicates which GPIO should be used for hotplug
detection
-Video interfaces:
- Device node can contain video interface port nodes according to [1].
- The following are properties specific to those nodes:
-
- endpoint node connected to bridge or panel node:
- - remote-endpoint: specifies the endpoint in panel or bridge node.
- This node is required in all kinds of exynos dp
- to represent the connection between dp and bridge
- or dp and panel.
-
-[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
+ -video interfaces: Device node can contain video interface port
+ nodes according to [1].
+ - display-timings: timings for the connected panel as described by
+ Documentation/devicetree/bindings/display/panel/display-timing.txt
+
+For the below properties, please refer to Analogix DP binding document:
+ * Documentation/devicetree/bindings/display/bridge/analogix_dp.txt
+ -phys (required)
+ -phy-names (required)
+ -hpd-gpios (optional)
+ force-hpd (optional)
+
+Deprecated properties for DisplayPort:
+-interlaced: deprecated prop that can parsed from drm_display_mode.
+-vsync-active-high: deprecated prop that can parsed from drm_display_mode.
+-hsync-active-high: deprecated prop that can parsed from drm_display_mode.
+-samsung,ycbcr-coeff: deprecated prop that can parsed from drm_display_mode.
+-samsung,dynamic-range: deprecated prop that can parsed from drm_display_mode.
+-samsung,color-space: deprecated prop that can parsed from drm_display_info.
+-samsung,color-depth: deprecated prop that can parsed from drm_display_info.
+-samsung,link-rate: deprecated prop that can reading from monitor by dpcd method.
+-samsung,lane-count: deprecated prop that can reading from monitor by dpcd method.
+-samsung,hpd-gpio: deprecated name for hpd-gpios.
+
+-------------------------------------------------------------------------------
Example:
Board Specific portion:
dp-controller {
- samsung,color-space = <0>;
- samsung,dynamic-range = <0>;
- samsung,ycbcr-coeff = <0>;
- samsung,color-depth = <1>;
- samsung,link-rate = <0x0a>;
- samsung,lane-count = <4>;
-
display-timings {
native-mode = <&lcd_timing>;
lcd_timing: 1366x768 {
};
ports {
- port {
+ port@0 {
dp_out: endpoint {
- remote-endpoint = <&dp_in>;
- };
- };
- };
-
- panel {
- ...
- port {
- dp_in: endpoint {
- remote-endpoint = <&dp_out>;
+ remote-endpoint = <&bridge_in>;
};
};
};
--- /dev/null
+Rockchip RK3288 specific extensions to the Analogix Display Port
+================================
+
+Required properties:
+- compatible: "rockchip,rk3288-edp";
+
+- reg: physical base address of the controller and length
+
+- clocks: from common clock binding: handle to dp clock.
+ of memory mapped region.
+
+- clock-names: from common clock binding:
+ Required elements: "dp" "pclk"
+
+- resets: Must contain an entry for each entry in reset-names.
+ See ../reset/reset.txt for details.
+
+- pinctrl-names: Names corresponding to the chip hotplug pinctrl states.
+- pinctrl-0: pin-control mode. should be <&edp_hpd>
+
+- reset-names: Must include the name "dp"
+
+- rockchip,grf: this soc should set GRF regs, so need get grf here.
+
+- ports: there are 2 port nodes with endpoint definitions as defined in
+ Documentation/devicetree/bindings/media/video-interfaces.txt.
+ Port 0: contained 2 endpoints, connecting to the output of vop.
+ Port 1: contained 1 endpoint, connecting to the input of panel.
+
+For the below properties, please refer to Analogix DP binding document:
+ * Documentation/devicetree/bindings/drm/bridge/analogix_dp.txt
+- phys (required)
+- phy-names (required)
+- hpd-gpios (optional)
+- force-hpd (optional)
+-------------------------------------------------------------------------------
+
+Example:
+ dp-controller: dp@ff970000 {
+ compatible = "rockchip,rk3288-dp";
+ reg = <0xff970000 0x4000>;
+ interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cru SCLK_EDP>, <&cru PCLK_EDP_CTRL>;
+ clock-names = "dp", "pclk";
+ phys = <&dp_phy>;
+ phy-names = "dp";
+
+ rockchip,grf = <&grf>;
+ resets = <&cru 111>;
+ reset-names = "dp";
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&edp_hpd>;
+
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ edp_in: port@0 {
+ reg = <0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ edp_in_vopb: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&vopb_out_edp>;
+ };
+ edp_in_vopl: endpoint@1 {
+ reg = <1>;
+ remote-endpoint = <&vopl_out_edp>;
+ };
+ };
+
+ edp_out: port@1 {
+ reg = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ edp_out_panel: endpoint {
+ reg = <0>;
+ remote-endpoint = <&panel_in_edp>
+ };
+ };
+ };
+ };
+
+ pinctrl {
+ edp {
+ edp_hpd: edp-hpd {
+ rockchip,pins = <7 11 RK_FUNC_2 &pcfg_pull_none>;
+ };
+ };
+ };
&dp {
status = "okay";
samsung,color-space = <0>;
- samsung,dynamic-range = <0>;
- samsung,ycbcr-coeff = <0>;
samsung,color-depth = <1>;
samsung,link-rate = <0x0a>;
samsung,lane-count = <4>;
&dp {
samsung,color-space = <0>;
- samsung,dynamic-range = <0>;
- samsung,ycbcr-coeff = <0>;
samsung,color-depth = <1>;
samsung,link-rate = <0x0a>;
samsung,lane-count = <4>;
pinctrl-names = "default";
pinctrl-0 = <&dp_hpd>;
samsung,color-space = <0>;
- samsung,dynamic-range = <0>;
- samsung,ycbcr-coeff = <0>;
samsung,color-depth = <1>;
samsung,link-rate = <0x0a>;
samsung,lane-count = <2>;
- samsung,hpd-gpio = <&gpx0 7 GPIO_ACTIVE_HIGH>;
+ hpd-gpios = <&gpx0 7 GPIO_ACTIVE_HIGH>;
ports {
port@0 {
pinctrl-names = "default";
pinctrl-0 = <&dp_hpd_gpio>;
samsung,color-space = <0>;
- samsung,dynamic-range = <0>;
- samsung,ycbcr-coeff = <0>;
samsung,color-depth = <1>;
samsung,link-rate = <0x0a>;
samsung,lane-count = <1>;
- samsung,hpd-gpio = <&gpc3 0 GPIO_ACTIVE_HIGH>;
+ hpd-gpios = <&gpc3 0 GPIO_ACTIVE_HIGH>;
};
&ehci {
pinctrl-names = "default";
pinctrl-0 = <&dp_hpd_gpio>;
samsung,color-space = <0>;
- samsung,dynamic-range = <0>;
- samsung,ycbcr-coeff = <0>;
samsung,color-depth = <1>;
samsung,link-rate = <0x06>;
samsung,lane-count = <2>;
- samsung,hpd-gpio = <&gpx2 6 GPIO_ACTIVE_HIGH>;
+ hpd-gpios = <&gpx2 6 GPIO_ACTIVE_HIGH>;
ports {
port@0 {
pinctrl-names = "default";
pinctrl-0 = <&dp_hpd>;
samsung,color-space = <0>;
- samsung,dynamic-range = <0>;
- samsung,ycbcr-coeff = <0>;
samsung,color-depth = <1>;
samsung,link-rate = <0x0a>;
samsung,lane-count = <4>;
pinctrl-names = "default";
pinctrl-0 = <&dp_hpd_gpio>;
samsung,color-space = <0>;
- samsung,dynamic-range = <0>;
- samsung,ycbcr-coeff = <0>;
samsung,color-depth = <1>;
samsung,link-rate = <0x0a>;
samsung,lane-count = <2>;
---help---
Parade eDP-LVDS bridge chip driver.
+source "drivers/gpu/drm/bridge/analogix/Kconfig"
+
endmenu
obj-$(CONFIG_DRM_DW_HDMI_AHB_AUDIO) += dw-hdmi-ahb-audio.o
obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
+obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix/
--- /dev/null
+config DRM_ANALOGIX_DP
+ tristate
+ depends on DRM
--- /dev/null
+analogix_dp-objs := analogix_dp_core.o analogix_dp_reg.o
+obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix_dp.o
--- /dev/null
+/*
+* Analogix DP (Display Port) core interface driver.
+*
+* Copyright (C) 2012 Samsung Electronics Co., Ltd.
+* Author: Jingoo Han <jg1.han@samsung.com>
+*
+* This program is free software; you can redistribute it and/or modify it
+* under the terms of the GNU General Public License as published by the
+* Free Software Foundation; either version 2 of the License, or (at your
+* option) any later version.
+*/
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/gpio.h>
+#include <linux/component.h>
+#include <linux/phy/phy.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_panel.h>
+
+#include <drm/bridge/analogix_dp.h>
+
+#include "analogix_dp_core.h"
+
+#define to_dp(nm) container_of(nm, struct analogix_dp_device, nm)
+
+struct bridge_init {
+ struct i2c_client *client;
+ struct device_node *node;
+};
+
+static void analogix_dp_init_dp(struct analogix_dp_device *dp)
+{
+ analogix_dp_reset(dp);
+
+ analogix_dp_swreset(dp);
+
+ analogix_dp_init_analog_param(dp);
+ analogix_dp_init_interrupt(dp);
+
+ /* SW defined function Normal operation */
+ analogix_dp_enable_sw_function(dp);
+
+ analogix_dp_config_interrupt(dp);
+ analogix_dp_init_analog_func(dp);
+
+ analogix_dp_init_hpd(dp);
+ analogix_dp_init_aux(dp);
+}
+
+static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
+{
+ int timeout_loop = 0;
+
+ while (timeout_loop < DP_TIMEOUT_LOOP_COUNT) {
+ if (analogix_dp_get_plug_in_status(dp) == 0)
+ return 0;
+
+ timeout_loop++;
+ usleep_range(10, 11);
+ }
+
+ /*
+ * Some edp screen do not have hpd signal, so we can't just
+ * return failed when hpd plug in detect failed, DT property
+ * "force-hpd" would indicate whether driver need this.
+ */
+ if (!dp->force_hpd)
+ return -ETIMEDOUT;
+
+ /*
+ * The eDP TRM indicate that if HPD_STATUS(RO) is 0, AUX CH
+ * will not work, so we need to give a force hpd action to
+ * set HPD_STATUS manually.
+ */
+ dev_dbg(dp->dev, "failed to get hpd plug status, try to force hpd\n");
+
+ analogix_dp_force_hpd(dp);
+
+ if (analogix_dp_get_plug_in_status(dp) != 0) {
+ dev_err(dp->dev, "failed to get hpd plug in status\n");
+ return -EINVAL;
+ }
+
+ dev_dbg(dp->dev, "success to get plug in status after force hpd\n");
+
+ return 0;
+}
+
+static unsigned char analogix_dp_calc_edid_check_sum(unsigned char *edid_data)
+{
+ int i;
+ unsigned char sum = 0;
+
+ for (i = 0; i < EDID_BLOCK_LENGTH; i++)
+ sum = sum + edid_data[i];
+
+ return sum;
+}
+
+static int analogix_dp_read_edid(struct analogix_dp_device *dp)
+{
+ unsigned char *edid = dp->edid;
+ unsigned int extend_block = 0;
+ unsigned char sum;
+ unsigned char test_vector;
+ int retval;
+
+ /*
+ * EDID device address is 0x50.
+ * However, if necessary, you must have set upper address
+ * into E-EDID in I2C device, 0x30.
+ */
+
+ /* Read Extension Flag, Number of 128-byte EDID extension blocks */
+ retval = analogix_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
+ EDID_EXTENSION_FLAG,
+ &extend_block);
+ if (retval)
+ return retval;
+
+ if (extend_block > 0) {
+ dev_dbg(dp->dev, "EDID data includes a single extension!\n");
+
+ /* Read EDID data */
+ retval = analogix_dp_read_bytes_from_i2c(dp,
+ I2C_EDID_DEVICE_ADDR,
+ EDID_HEADER_PATTERN,
+ EDID_BLOCK_LENGTH,
+ &edid[EDID_HEADER_PATTERN]);
+ if (retval != 0) {
+ dev_err(dp->dev, "EDID Read failed!\n");
+ return -EIO;
+ }
+ sum = analogix_dp_calc_edid_check_sum(edid);
+ if (sum != 0) {
+ dev_err(dp->dev, "EDID bad checksum!\n");
+ return -EIO;
+ }
+
+ /* Read additional EDID data */
+ retval = analogix_dp_read_bytes_from_i2c(dp,
+ I2C_EDID_DEVICE_ADDR,
+ EDID_BLOCK_LENGTH,
+ EDID_BLOCK_LENGTH,
+ &edid[EDID_BLOCK_LENGTH]);
+ if (retval != 0) {
+ dev_err(dp->dev, "EDID Read failed!\n");
+ return -EIO;
+ }
+ sum = analogix_dp_calc_edid_check_sum(&edid[EDID_BLOCK_LENGTH]);
+ if (sum != 0) {
+ dev_err(dp->dev, "EDID bad checksum!\n");
+ return -EIO;
+ }
+
+ analogix_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
+ &test_vector);
+ if (test_vector & DP_TEST_LINK_EDID_READ) {
+ analogix_dp_write_byte_to_dpcd(dp,
+ DP_TEST_EDID_CHECKSUM,
+ edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]);
+ analogix_dp_write_byte_to_dpcd(dp,
+ DP_TEST_RESPONSE,
+ DP_TEST_EDID_CHECKSUM_WRITE);
+ }
+ } else {
+ dev_info(dp->dev, "EDID data does not include any extensions.\n");
+
+ /* Read EDID data */
+ retval = analogix_dp_read_bytes_from_i2c(dp,
+ I2C_EDID_DEVICE_ADDR, EDID_HEADER_PATTERN,
+ EDID_BLOCK_LENGTH, &edid[EDID_HEADER_PATTERN]);
+ if (retval != 0) {
+ dev_err(dp->dev, "EDID Read failed!\n");
+ return -EIO;
+ }
+ sum = analogix_dp_calc_edid_check_sum(edid);
+ if (sum != 0) {
+ dev_err(dp->dev, "EDID bad checksum!\n");
+ return -EIO;
+ }
+
+ analogix_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
+ &test_vector);
+ if (test_vector & DP_TEST_LINK_EDID_READ) {
+ analogix_dp_write_byte_to_dpcd(dp,
+ DP_TEST_EDID_CHECKSUM, edid[EDID_CHECKSUM]);
+ analogix_dp_write_byte_to_dpcd(dp,
+ DP_TEST_RESPONSE, DP_TEST_EDID_CHECKSUM_WRITE);
+ }
+ }
+
+ dev_dbg(dp->dev, "EDID Read success!\n");
+ return 0;
+}
+
+static int analogix_dp_handle_edid(struct analogix_dp_device *dp)
+{
+ u8 buf[12];
+ int i;
+ int retval;
+
+ /* Read DPCD DP_DPCD_REV~RECEIVE_PORT1_CAP_1 */
+ retval = analogix_dp_read_bytes_from_dpcd(dp, DP_DPCD_REV, 12, buf);
+ if (retval)
+ return retval;
+
+ /* Read EDID */
+ for (i = 0; i < 3; i++) {
+ retval = analogix_dp_read_edid(dp);
+ if (!retval)
+ break;
+ }
+
+ return retval;
+}
+
+static void
+analogix_dp_enable_rx_to_enhanced_mode(struct analogix_dp_device *dp,
+ bool enable)
+{
+ u8 data;
+
+ analogix_dp_read_byte_from_dpcd(dp, DP_LANE_COUNT_SET, &data);
+
+ if (enable)
+ analogix_dp_write_byte_to_dpcd(dp, DP_LANE_COUNT_SET,
+ DP_LANE_COUNT_ENHANCED_FRAME_EN |
+ DPCD_LANE_COUNT_SET(data));
+ else
+ analogix_dp_write_byte_to_dpcd(dp, DP_LANE_COUNT_SET,
+ DPCD_LANE_COUNT_SET(data));
+}
+
+static int analogix_dp_is_enhanced_mode_available(struct analogix_dp_device *dp)
+{
+ u8 data;
+ int retval;
+
+ analogix_dp_read_byte_from_dpcd(dp, DP_MAX_LANE_COUNT, &data);
+ retval = DPCD_ENHANCED_FRAME_CAP(data);
+
+ return retval;
+}
+
+static void analogix_dp_set_enhanced_mode(struct analogix_dp_device *dp)
+{
+ u8 data;
+
+ data = analogix_dp_is_enhanced_mode_available(dp);
+ analogix_dp_enable_rx_to_enhanced_mode(dp, data);
+ analogix_dp_enable_enhanced_mode(dp, data);
+}
+
+static void analogix_dp_training_pattern_dis(struct analogix_dp_device *dp)
+{
+ analogix_dp_set_training_pattern(dp, DP_NONE);
+
+ analogix_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET,
+ DP_TRAINING_PATTERN_DISABLE);
+}
+
+static void
+analogix_dp_set_lane_lane_pre_emphasis(struct analogix_dp_device *dp,
+ int pre_emphasis, int lane)
+{
+ switch (lane) {
+ case 0:
+ analogix_dp_set_lane0_pre_emphasis(dp, pre_emphasis);
+ break;
+ case 1:
+ analogix_dp_set_lane1_pre_emphasis(dp, pre_emphasis);
+ break;
+
+ case 2:
+ analogix_dp_set_lane2_pre_emphasis(dp, pre_emphasis);
+ break;
+
+ case 3:
+ analogix_dp_set_lane3_pre_emphasis(dp, pre_emphasis);
+ break;
+ }
+}
+
+static int analogix_dp_link_start(struct analogix_dp_device *dp)
+{
+ u8 buf[4];
+ int lane, lane_count, pll_tries, retval;
+
+ lane_count = dp->link_train.lane_count;
+
+ dp->link_train.lt_state = CLOCK_RECOVERY;
+ dp->link_train.eq_loop = 0;
+
+ for (lane = 0; lane < lane_count; lane++)
+ dp->link_train.cr_loop[lane] = 0;
+
+ /* Set link rate and count as you want to establish*/
+ analogix_dp_set_link_bandwidth(dp, dp->link_train.link_rate);
+ analogix_dp_set_lane_count(dp, dp->link_train.lane_count);
+
+ /* Setup RX configuration */
+ buf[0] = dp->link_train.link_rate;
+ buf[1] = dp->link_train.lane_count;
+ retval = analogix_dp_write_bytes_to_dpcd(dp, DP_LINK_BW_SET, 2, buf);
+ if (retval)
+ return retval;
+
+ /* Set TX pre-emphasis to minimum */
+ for (lane = 0; lane < lane_count; lane++)
+ analogix_dp_set_lane_lane_pre_emphasis(dp,
+ PRE_EMPHASIS_LEVEL_0, lane);
+
+ /* Wait for PLL lock */
+ pll_tries = 0;
+ while (analogix_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
+ if (pll_tries == DP_TIMEOUT_LOOP_COUNT) {
+ dev_err(dp->dev, "Wait for PLL lock timed out\n");
+ return -ETIMEDOUT;
+ }
+
+ pll_tries++;
+ usleep_range(90, 120);
+ }
+
+ /* Set training pattern 1 */
+ analogix_dp_set_training_pattern(dp, TRAINING_PTN1);
+
+ /* Set RX training pattern */
+ retval = analogix_dp_write_byte_to_dpcd(dp,
+ DP_TRAINING_PATTERN_SET,
+ DP_LINK_SCRAMBLING_DISABLE | DP_TRAINING_PATTERN_1);
+ if (retval)
+ return retval;
+
+ for (lane = 0; lane < lane_count; lane++)
+ buf[lane] = DP_TRAIN_PRE_EMPH_LEVEL_0 |
+ DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
+
+ retval = analogix_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
+ lane_count, buf);
+
+ return retval;
+}
+
+static unsigned char analogix_dp_get_lane_status(u8 link_status[2], int lane)
+{
+ int shift = (lane & 1) * 4;
+ u8 link_value = link_status[lane >> 1];
+
+ return (link_value >> shift) & 0xf;
+}
+
+static int analogix_dp_clock_recovery_ok(u8 link_status[2], int lane_count)
+{
+ int lane;
+ u8 lane_status;
+
+ for (lane = 0; lane < lane_count; lane++) {
+ lane_status = analogix_dp_get_lane_status(link_status, lane);
+ if ((lane_status & DP_LANE_CR_DONE) == 0)
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int analogix_dp_channel_eq_ok(u8 link_status[2], u8 link_align,
+ int lane_count)
+{
+ int lane;
+ u8 lane_status;
+
+ if ((link_align & DP_INTERLANE_ALIGN_DONE) == 0)
+ return -EINVAL;
+
+ for (lane = 0; lane < lane_count; lane++) {
+ lane_status = analogix_dp_get_lane_status(link_status, lane);
+ lane_status &= DP_CHANNEL_EQ_BITS;
+ if (lane_status != DP_CHANNEL_EQ_BITS)
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static unsigned char
+analogix_dp_get_adjust_request_voltage(u8 adjust_request[2], int lane)
+{
+ int shift = (lane & 1) * 4;
+ u8 link_value = adjust_request[lane >> 1];
+
+ return (link_value >> shift) & 0x3;
+}
+
+static unsigned char analogix_dp_get_adjust_request_pre_emphasis(
+ u8 adjust_request[2],
+ int lane)
+{
+ int shift = (lane & 1) * 4;
+ u8 link_value = adjust_request[lane >> 1];
+
+ return ((link_value >> shift) & 0xc) >> 2;
+}
+
+static void analogix_dp_set_lane_link_training(struct analogix_dp_device *dp,
+ u8 training_lane_set, int lane)
+{
+ switch (lane) {
+ case 0:
+ analogix_dp_set_lane0_link_training(dp, training_lane_set);
+ break;
+ case 1:
+ analogix_dp_set_lane1_link_training(dp, training_lane_set);
+ break;
+
+ case 2:
+ analogix_dp_set_lane2_link_training(dp, training_lane_set);
+ break;
+
+ case 3:
+ analogix_dp_set_lane3_link_training(dp, training_lane_set);
+ break;
+ }
+}
+
+static unsigned int
+analogix_dp_get_lane_link_training(struct analogix_dp_device *dp,
+ int lane)
+{
+ u32 reg;
+
+ switch (lane) {
+ case 0:
+ reg = analogix_dp_get_lane0_link_training(dp);
+ break;
+ case 1:
+ reg = analogix_dp_get_lane1_link_training(dp);
+ break;
+ case 2:
+ reg = analogix_dp_get_lane2_link_training(dp);
+ break;
+ case 3:
+ reg = analogix_dp_get_lane3_link_training(dp);
+ break;
+ default:
+ WARN_ON(1);
+ return 0;
+ }
+
+ return reg;
+}
+
+static void analogix_dp_reduce_link_rate(struct analogix_dp_device *dp)
+{
+ analogix_dp_training_pattern_dis(dp);
+ analogix_dp_set_enhanced_mode(dp);
+
+ dp->link_train.lt_state = FAILED;
+}
+
+static void analogix_dp_get_adjust_training_lane(struct analogix_dp_device *dp,
+ u8 adjust_request[2])
+{
+ int lane, lane_count;
+ u8 voltage_swing, pre_emphasis, training_lane;
+
+ lane_count = dp->link_train.lane_count;
+ for (lane = 0; lane < lane_count; lane++) {
+ voltage_swing = analogix_dp_get_adjust_request_voltage(
+ adjust_request, lane);
+ pre_emphasis = analogix_dp_get_adjust_request_pre_emphasis(
+ adjust_request, lane);
+ training_lane = DPCD_VOLTAGE_SWING_SET(voltage_swing) |
+ DPCD_PRE_EMPHASIS_SET(pre_emphasis);
+
+ if (voltage_swing == VOLTAGE_LEVEL_3)
+ training_lane |= DP_TRAIN_MAX_SWING_REACHED;
+ if (pre_emphasis == PRE_EMPHASIS_LEVEL_3)
+ training_lane |= DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
+
+ dp->link_train.training_lane[lane] = training_lane;
+ }
+}
+
+static int analogix_dp_process_clock_recovery(struct analogix_dp_device *dp)
+{
+ int lane, lane_count, retval;
+ u8 voltage_swing, pre_emphasis, training_lane;
+ u8 link_status[2], adjust_request[2];
+
+ usleep_range(100, 101);
+
+ lane_count = dp->link_train.lane_count;
+
+ retval = analogix_dp_read_bytes_from_dpcd(dp,
+ DP_LANE0_1_STATUS, 2, link_status);
+ if (retval)
+ return retval;
+
+ retval = analogix_dp_read_bytes_from_dpcd(dp,
+ DP_ADJUST_REQUEST_LANE0_1, 2, adjust_request);
+ if (retval)
+ return retval;
+
+ if (analogix_dp_clock_recovery_ok(link_status, lane_count) == 0) {
+ /* set training pattern 2 for EQ */
+ analogix_dp_set_training_pattern(dp, TRAINING_PTN2);
+
+ retval = analogix_dp_write_byte_to_dpcd(dp,
+ DP_TRAINING_PATTERN_SET,
+ DP_LINK_SCRAMBLING_DISABLE |
+ DP_TRAINING_PATTERN_2);
+ if (retval)
+ return retval;
+
+ dev_info(dp->dev, "Link Training Clock Recovery success\n");
+ dp->link_train.lt_state = EQUALIZER_TRAINING;
+ } else {
+ for (lane = 0; lane < lane_count; lane++) {
+ training_lane = analogix_dp_get_lane_link_training(
+ dp, lane);
+ voltage_swing = analogix_dp_get_adjust_request_voltage(
+ adjust_request, lane);
+ pre_emphasis = analogix_dp_get_adjust_request_pre_emphasis(
+ adjust_request, lane);
+
+ if (DPCD_VOLTAGE_SWING_GET(training_lane) ==
+ voltage_swing &&
+ DPCD_PRE_EMPHASIS_GET(training_lane) ==
+ pre_emphasis)
+ dp->link_train.cr_loop[lane]++;
+
+ if (dp->link_train.cr_loop[lane] == MAX_CR_LOOP ||
+ voltage_swing == VOLTAGE_LEVEL_3 ||
+ pre_emphasis == PRE_EMPHASIS_LEVEL_3) {
+ dev_err(dp->dev, "CR Max reached (%d,%d,%d)\n",
+ dp->link_train.cr_loop[lane],
+ voltage_swing, pre_emphasis);
+ analogix_dp_reduce_link_rate(dp);
+ return -EIO;
+ }
+ }
+ }
+
+ analogix_dp_get_adjust_training_lane(dp, adjust_request);
+
+ for (lane = 0; lane < lane_count; lane++)
+ analogix_dp_set_lane_link_training(dp,
+ dp->link_train.training_lane[lane], lane);
+
+ retval = analogix_dp_write_bytes_to_dpcd(dp,
+ DP_TRAINING_LANE0_SET, lane_count,
+ dp->link_train.training_lane);
+ if (retval)
+ return retval;
+
+ return retval;
+}
+
+static int analogix_dp_process_equalizer_training(struct analogix_dp_device *dp)
+{
+ int lane, lane_count, retval;
+ u32 reg;
+ u8 link_align, link_status[2], adjust_request[2];
+
+ usleep_range(400, 401);
+
+ lane_count = dp->link_train.lane_count;
+
+ retval = analogix_dp_read_bytes_from_dpcd(dp,
+ DP_LANE0_1_STATUS, 2, link_status);
+ if (retval)
+ return retval;
+
+ if (analogix_dp_clock_recovery_ok(link_status, lane_count)) {
+ analogix_dp_reduce_link_rate(dp);
+ return -EIO;
+ }
+
+ retval = analogix_dp_read_bytes_from_dpcd(dp,
+ DP_ADJUST_REQUEST_LANE0_1, 2, adjust_request);
+ if (retval)
+ return retval;
+
+ retval = analogix_dp_read_byte_from_dpcd(dp,
+ DP_LANE_ALIGN_STATUS_UPDATED, &link_align);
+ if (retval)
+ return retval;
+
+ analogix_dp_get_adjust_training_lane(dp, adjust_request);
+
+ if (!analogix_dp_channel_eq_ok(link_status, link_align, lane_count)) {
+ /* traing pattern Set to Normal */
+ analogix_dp_training_pattern_dis(dp);
+
+ dev_info(dp->dev, "Link Training success!\n");
+
+ analogix_dp_get_link_bandwidth(dp, ®);
+ dp->link_train.link_rate = reg;
+ dev_dbg(dp->dev, "final bandwidth = %.2x\n",
+ dp->link_train.link_rate);
+
+ analogix_dp_get_lane_count(dp, ®);
+ dp->link_train.lane_count = reg;
+ dev_dbg(dp->dev, "final lane count = %.2x\n",
+ dp->link_train.lane_count);
+
+ /* set enhanced mode if available */
+ analogix_dp_set_enhanced_mode(dp);
+ dp->link_train.lt_state = FINISHED;
+
+ return 0;
+ }
+
+ /* not all locked */
+ dp->link_train.eq_loop++;
+
+ if (dp->link_train.eq_loop > MAX_EQ_LOOP) {
+ dev_err(dp->dev, "EQ Max loop\n");
+ analogix_dp_reduce_link_rate(dp);
+ return -EIO;
+ }
+
+ for (lane = 0; lane < lane_count; lane++)
+ analogix_dp_set_lane_link_training(dp,
+ dp->link_train.training_lane[lane], lane);
+
+ retval = analogix_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
+ lane_count, dp->link_train.training_lane);
+
+ return retval;
+}
+
+static void analogix_dp_get_max_rx_bandwidth(struct analogix_dp_device *dp,
+ u8 *bandwidth)
+{
+ u8 data;
+
+ /*
+ * For DP rev.1.1, Maximum link rate of Main Link lanes
+ * 0x06 = 1.62 Gbps, 0x0a = 2.7 Gbps
+ * For DP rev.1.2, Maximum link rate of Main Link lanes
+ * 0x06 = 1.62 Gbps, 0x0a = 2.7 Gbps, 0x14 = 5.4Gbps
+ */
+ analogix_dp_read_byte_from_dpcd(dp, DP_MAX_LINK_RATE, &data);
+ *bandwidth = data;
+}
+
+static void analogix_dp_get_max_rx_lane_count(struct analogix_dp_device *dp,
+ u8 *lane_count)
+{
+ u8 data;
+
+ /*
+ * For DP rev.1.1, Maximum number of Main Link lanes
+ * 0x01 = 1 lane, 0x02 = 2 lanes, 0x04 = 4 lanes
+ */
+ analogix_dp_read_byte_from_dpcd(dp, DP_MAX_LANE_COUNT, &data);
+ *lane_count = DPCD_MAX_LANE_COUNT(data);
+}
+
+static void analogix_dp_init_training(struct analogix_dp_device *dp,
+ enum link_lane_count_type max_lane,
+ int max_rate)
+{
+ /*
+ * MACRO_RST must be applied after the PLL_LOCK to avoid
+ * the DP inter pair skew issue for at least 10 us
+ */
+ analogix_dp_reset_macro(dp);
+
+ /* Initialize by reading RX's DPCD */
+ analogix_dp_get_max_rx_bandwidth(dp, &dp->link_train.link_rate);
+ analogix_dp_get_max_rx_lane_count(dp, &dp->link_train.lane_count);
+
+ if ((dp->link_train.link_rate != DP_LINK_BW_1_62) &&
+ (dp->link_train.link_rate != DP_LINK_BW_2_7) &&
+ (dp->link_train.link_rate != DP_LINK_BW_5_4)) {
+ dev_err(dp->dev, "Rx Max Link Rate is abnormal :%x !\n",
+ dp->link_train.link_rate);
+ dp->link_train.link_rate = DP_LINK_BW_1_62;
+ }
+
+ if (dp->link_train.lane_count == 0) {
+ dev_err(dp->dev, "Rx Max Lane count is abnormal :%x !\n",
+ dp->link_train.lane_count);
+ dp->link_train.lane_count = (u8)LANE_COUNT1;
+ }
+
+ /* Setup TX lane count & rate */
+ if (dp->link_train.lane_count > max_lane)
+ dp->link_train.lane_count = max_lane;
+ if (dp->link_train.link_rate > max_rate)
+ dp->link_train.link_rate = max_rate;
+
+ /* All DP analog module power up */
+ analogix_dp_set_analog_power_down(dp, POWER_ALL, 0);
+}
+
+static int analogix_dp_sw_link_training(struct analogix_dp_device *dp)
+{
+ int retval = 0, training_finished = 0;
+
+ dp->link_train.lt_state = START;
+
+ /* Process here */
+ while (!retval && !training_finished) {
+ switch (dp->link_train.lt_state) {
+ case START:
+ retval = analogix_dp_link_start(dp);
+ if (retval)
+ dev_err(dp->dev, "LT link start failed!\n");
+ break;
+ case CLOCK_RECOVERY:
+ retval = analogix_dp_process_clock_recovery(dp);
+ if (retval)
+ dev_err(dp->dev, "LT CR failed!\n");
+ break;
+ case EQUALIZER_TRAINING:
+ retval = analogix_dp_process_equalizer_training(dp);
+ if (retval)
+ dev_err(dp->dev, "LT EQ failed!\n");
+ break;
+ case FINISHED:
+ training_finished = 1;
+ break;
+ case FAILED:
+ return -EREMOTEIO;
+ }
+ }
+ if (retval)
+ dev_err(dp->dev, "eDP link training failed (%d)\n", retval);
+
+ return retval;
+}
+
+static int analogix_dp_set_link_train(struct analogix_dp_device *dp,
+ u32 count, u32 bwtype)
+{
+ int i;
+ int retval;
+
+ for (i = 0; i < DP_TIMEOUT_LOOP_COUNT; i++) {
+ analogix_dp_init_training(dp, count, bwtype);
+ retval = analogix_dp_sw_link_training(dp);
+ if (retval == 0)
+ break;
+
+ usleep_range(100, 110);
+ }
+
+ return retval;
+}
+
+static int analogix_dp_config_video(struct analogix_dp_device *dp)
+{
+ int retval = 0;
+ int timeout_loop = 0;
+ int done_count = 0;
+
+ analogix_dp_config_video_slave_mode(dp);
+
+ analogix_dp_set_video_color_format(dp);
+
+ if (analogix_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
+ dev_err(dp->dev, "PLL is not locked yet.\n");
+ return -EINVAL;
+ }
+
+ for (;;) {
+ timeout_loop++;
+ if (analogix_dp_is_slave_video_stream_clock_on(dp) == 0)
+ break;
+ if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) {
+ dev_err(dp->dev, "Timeout of video streamclk ok\n");
+ return -ETIMEDOUT;
+ }
+
+ usleep_range(1, 2);
+ }
+
+ /* Set to use the register calculated M/N video */
+ analogix_dp_set_video_cr_mn(dp, CALCULATED_M, 0, 0);
+
+ /* For video bist, Video timing must be generated by register */
+ analogix_dp_set_video_timing_mode(dp, VIDEO_TIMING_FROM_CAPTURE);
+
+ /* Disable video mute */
+ analogix_dp_enable_video_mute(dp, 0);
+
+ /* Configure video slave mode */
+ analogix_dp_enable_video_master(dp, 0);
+
+ timeout_loop = 0;
+
+ for (;;) {
+ timeout_loop++;
+ if (analogix_dp_is_video_stream_on(dp) == 0) {
+ done_count++;
+ if (done_count > 10)
+ break;
+ } else if (done_count) {
+ done_count = 0;
+ }
+ if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) {
+ dev_err(dp->dev, "Timeout of video streamclk ok\n");
+ return -ETIMEDOUT;
+ }
+
+ usleep_range(1000, 1001);
+ }
+
+ if (retval != 0)
+ dev_err(dp->dev, "Video stream is not detected!\n");
+
+ return retval;
+}
+
+static void analogix_dp_enable_scramble(struct analogix_dp_device *dp,
+ bool enable)
+{
+ u8 data;
+
+ if (enable) {
+ analogix_dp_enable_scrambling(dp);
+
+ analogix_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET,
+ &data);
+ analogix_dp_write_byte_to_dpcd(dp,
+ DP_TRAINING_PATTERN_SET,
+ (u8)(data & ~DP_LINK_SCRAMBLING_DISABLE));
+ } else {
+ analogix_dp_disable_scrambling(dp);
+
+ analogix_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET,
+ &data);
+ analogix_dp_write_byte_to_dpcd(dp,
+ DP_TRAINING_PATTERN_SET,
+ (u8)(data | DP_LINK_SCRAMBLING_DISABLE));
+ }
+}
+
+static irqreturn_t analogix_dp_hardirq(int irq, void *arg)
+{
+ struct analogix_dp_device *dp = arg;
+ irqreturn_t ret = IRQ_NONE;
+ enum dp_irq_type irq_type;
+
+ irq_type = analogix_dp_get_irq_type(dp);
+ if (irq_type != DP_IRQ_TYPE_UNKNOWN) {
+ analogix_dp_mute_hpd_interrupt(dp);
+ ret = IRQ_WAKE_THREAD;
+ }
+
+ return ret;
+}
+
+static irqreturn_t analogix_dp_irq_thread(int irq, void *arg)
+{
+ struct analogix_dp_device *dp = arg;
+ enum dp_irq_type irq_type;
+
+ irq_type = analogix_dp_get_irq_type(dp);
+ if (irq_type & DP_IRQ_TYPE_HP_CABLE_IN ||
+ irq_type & DP_IRQ_TYPE_HP_CABLE_OUT) {
+ dev_dbg(dp->dev, "Detected cable status changed!\n");
+ if (dp->drm_dev)
+ drm_helper_hpd_irq_event(dp->drm_dev);
+ }
+
+ if (irq_type != DP_IRQ_TYPE_UNKNOWN) {
+ analogix_dp_clear_hotplug_interrupts(dp);
+ analogix_dp_unmute_hpd_interrupt(dp);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void analogix_dp_commit(struct analogix_dp_device *dp)
+{
+ int ret;
+
+ /* Keep the panel disabled while we configure video */
+ if (dp->plat_data->panel) {
+ if (drm_panel_disable(dp->plat_data->panel))
+ DRM_ERROR("failed to disable the panel\n");
+ }
+
+ ret = analogix_dp_set_link_train(dp, dp->video_info.max_lane_count,
+ dp->video_info.max_link_rate);
+ if (ret) {
+ dev_err(dp->dev, "unable to do link train\n");
+ return;
+ }
+
+ analogix_dp_enable_scramble(dp, 1);
+ analogix_dp_enable_rx_to_enhanced_mode(dp, 1);
+ analogix_dp_enable_enhanced_mode(dp, 1);
+
+ analogix_dp_init_video(dp);
+ ret = analogix_dp_config_video(dp);
+ if (ret)
+ dev_err(dp->dev, "unable to config video\n");
+
+ /* Safe to enable the panel now */
+ if (dp->plat_data->panel) {
+ if (drm_panel_enable(dp->plat_data->panel))
+ DRM_ERROR("failed to enable the panel\n");
+ }
+
+ /* Enable video */
+ analogix_dp_start_video(dp);
+}
+
+int analogix_dp_get_modes(struct drm_connector *connector)
+{
+ struct analogix_dp_device *dp = to_dp(connector);
+ struct edid *edid = (struct edid *)dp->edid;
+ int num_modes = 0;
+
+ if (analogix_dp_handle_edid(dp) == 0) {
+ drm_mode_connector_update_edid_property(&dp->connector, edid);
+ num_modes += drm_add_edid_modes(&dp->connector, edid);
+ }
+
+ if (dp->plat_data->panel)
+ num_modes += drm_panel_get_modes(dp->plat_data->panel);
+
+ if (dp->plat_data->get_modes)
+ num_modes += dp->plat_data->get_modes(dp->plat_data);
+
+ return num_modes;
+}
+
+static struct drm_encoder *
+analogix_dp_best_encoder(struct drm_connector *connector)
+{
+ struct analogix_dp_device *dp = to_dp(connector);
+
+ return dp->encoder;
+}
+
+static const struct drm_connector_helper_funcs analogix_dp_connector_helper_funcs = {
+ .get_modes = analogix_dp_get_modes,
+ .best_encoder = analogix_dp_best_encoder,
+};
+
+enum drm_connector_status
+analogix_dp_detect(struct drm_connector *connector, bool force)
+{
+ struct analogix_dp_device *dp = to_dp(connector);
+
+ if (analogix_dp_detect_hpd(dp))
+ return connector_status_disconnected;
+
+ return connector_status_connected;
+}
+
+static void analogix_dp_connector_destroy(struct drm_connector *connector)
+{
+ drm_connector_unregister(connector);
+ drm_connector_cleanup(connector);
+
+}
+
+static const struct drm_connector_funcs analogix_dp_connector_funcs = {
+ .dpms = drm_atomic_helper_connector_dpms,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .detect = analogix_dp_detect,
+ .destroy = analogix_dp_connector_destroy,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int analogix_dp_bridge_attach(struct drm_bridge *bridge)
+{
+ struct analogix_dp_device *dp = bridge->driver_private;
+ struct drm_encoder *encoder = dp->encoder;
+ struct drm_connector *connector = &dp->connector;
+ int ret;
+
+ if (!bridge->encoder) {
+ DRM_ERROR("Parent encoder object not found");
+ return -ENODEV;
+ }
+
+ connector->polled = DRM_CONNECTOR_POLL_HPD;
+
+ ret = drm_connector_init(dp->drm_dev, connector,
+ &analogix_dp_connector_funcs,
+ DRM_MODE_CONNECTOR_eDP);
+ if (ret) {
+ DRM_ERROR("Failed to initialize connector with drm\n");
+ return ret;
+ }
+
+ drm_connector_helper_add(connector,
+ &analogix_dp_connector_helper_funcs);
+ drm_mode_connector_attach_encoder(connector, encoder);
+
+ /*
+ * NOTE: the connector registration is implemented in analogix
+ * platform driver, that to say connector would be exist after
+ * plat_data->attch return, that's why we record the connector
+ * point after plat attached.
+ */
+ if (dp->plat_data->attach) {
+ ret = dp->plat_data->attach(dp->plat_data, bridge, connector);
+ if (ret) {
+ DRM_ERROR("Failed at platform attch func\n");
+ return ret;
+ }
+ }
+
+ if (dp->plat_data->panel) {
+ ret = drm_panel_attach(dp->plat_data->panel, &dp->connector);
+ if (ret) {
+ DRM_ERROR("Failed to attach panel\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static void analogix_dp_bridge_enable(struct drm_bridge *bridge)
+{
+ struct analogix_dp_device *dp = bridge->driver_private;
+
+ if (dp->dpms_mode == DRM_MODE_DPMS_ON)
+ return;
+
+ pm_runtime_get_sync(dp->dev);
+
+ if (dp->plat_data->power_on)
+ dp->plat_data->power_on(dp->plat_data);
+
+ phy_power_on(dp->phy);
+ analogix_dp_init_dp(dp);
+ enable_irq(dp->irq);
+ analogix_dp_commit(dp);
+
+ dp->dpms_mode = DRM_MODE_DPMS_ON;
+}
+
+static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
+{
+ struct analogix_dp_device *dp = bridge->driver_private;
+
+ if (dp->dpms_mode != DRM_MODE_DPMS_ON)
+ return;
+
+ if (dp->plat_data->panel) {
+ if (drm_panel_disable(dp->plat_data->panel)) {
+ DRM_ERROR("failed to disable the panel\n");
+ return;
+ }
+ }
+
+ disable_irq(dp->irq);
+ phy_power_off(dp->phy);
+
+ if (dp->plat_data->power_off)
+ dp->plat_data->power_off(dp->plat_data);
+
+ pm_runtime_put_sync(dp->dev);
+
+ dp->dpms_mode = DRM_MODE_DPMS_OFF;
+}
+
+static void analogix_dp_bridge_mode_set(struct drm_bridge *bridge,
+ struct drm_display_mode *orig_mode,
+ struct drm_display_mode *mode)
+{
+ struct analogix_dp_device *dp = bridge->driver_private;
+ struct drm_display_info *display_info = &dp->connector.display_info;
+ struct video_info *video = &dp->video_info;
+ struct device_node *dp_node = dp->dev->of_node;
+ int vic;
+
+ /* Input video interlaces & hsync pol & vsync pol */
+ video->interlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE);
+ video->v_sync_polarity = !!(mode->flags & DRM_MODE_FLAG_NVSYNC);
+ video->h_sync_polarity = !!(mode->flags & DRM_MODE_FLAG_NHSYNC);
+
+ /* Input video dynamic_range & colorimetry */
+ vic = drm_match_cea_mode(mode);
+ if ((vic == 6) || (vic == 7) || (vic == 21) || (vic == 22) ||
+ (vic == 2) || (vic == 3) || (vic == 17) || (vic == 18)) {
+ video->dynamic_range = CEA;
+ video->ycbcr_coeff = COLOR_YCBCR601;
+ } else if (vic) {
+ video->dynamic_range = CEA;
+ video->ycbcr_coeff = COLOR_YCBCR709;
+ } else {
+ video->dynamic_range = VESA;
+ video->ycbcr_coeff = COLOR_YCBCR709;
+ }
+
+ /* Input vide bpc and color_formats */
+ switch (display_info->bpc) {
+ case 12:
+ video->color_depth = COLOR_12;
+ break;
+ case 10:
+ video->color_depth = COLOR_10;
+ break;
+ case 8:
+ video->color_depth = COLOR_8;
+ break;
+ case 6:
+ video->color_depth = COLOR_6;
+ break;
+ default:
+ video->color_depth = COLOR_8;
+ break;
+ }
+ if (display_info->color_formats & DRM_COLOR_FORMAT_YCRCB444)
+ video->color_space = COLOR_YCBCR444;
+ else if (display_info->color_formats & DRM_COLOR_FORMAT_YCRCB422)
+ video->color_space = COLOR_YCBCR422;
+ else if (display_info->color_formats & DRM_COLOR_FORMAT_RGB444)
+ video->color_space = COLOR_RGB;
+ else
+ video->color_space = COLOR_RGB;
+
+ /*
+ * NOTE: those property parsing code is used for providing backward
+ * compatibility for samsung platform.
+ * Due to we used the "of_property_read_u32" interfaces, when this
+ * property isn't present, the "video_info" can keep the original
+ * values and wouldn't be modified.
+ */
+ of_property_read_u32(dp_node, "samsung,color-space",
+ &video->color_space);
+ of_property_read_u32(dp_node, "samsung,dynamic-range",
+ &video->dynamic_range);
+ of_property_read_u32(dp_node, "samsung,ycbcr-coeff",
+ &video->ycbcr_coeff);
+ of_property_read_u32(dp_node, "samsung,color-depth",
+ &video->color_depth);
+ if (of_property_read_bool(dp_node, "hsync-active-high"))
+ video->h_sync_polarity = true;
+ if (of_property_read_bool(dp_node, "vsync-active-high"))
+ video->v_sync_polarity = true;
+ if (of_property_read_bool(dp_node, "interlaced"))
+ video->interlaced = true;
+}
+
+static void analogix_dp_bridge_nop(struct drm_bridge *bridge)
+{
+ /* do nothing */
+}
+
+static const struct drm_bridge_funcs analogix_dp_bridge_funcs = {
+ .enable = analogix_dp_bridge_enable,
+ .disable = analogix_dp_bridge_disable,
+ .pre_enable = analogix_dp_bridge_nop,
+ .post_disable = analogix_dp_bridge_nop,
+ .mode_set = analogix_dp_bridge_mode_set,
+ .attach = analogix_dp_bridge_attach,
+};
+
+static int analogix_dp_create_bridge(struct drm_device *drm_dev,
+ struct analogix_dp_device *dp)
+{
+ struct drm_bridge *bridge;
+ int ret;
+
+ bridge = devm_kzalloc(drm_dev->dev, sizeof(*bridge), GFP_KERNEL);
+ if (!bridge) {
+ DRM_ERROR("failed to allocate for drm bridge\n");
+ return -ENOMEM;
+ }
+
+ dp->bridge = bridge;
+
+ dp->encoder->bridge = bridge;
+ bridge->driver_private = dp;
+ bridge->encoder = dp->encoder;
+ bridge->funcs = &analogix_dp_bridge_funcs;
+
+ ret = drm_bridge_attach(drm_dev, bridge);
+ if (ret) {
+ DRM_ERROR("failed to attach drm bridge\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int analogix_dp_dt_parse_pdata(struct analogix_dp_device *dp)
+{
+ struct device_node *dp_node = dp->dev->of_node;
+ struct video_info *video_info = &dp->video_info;
+
+ switch (dp->plat_data->dev_type) {
+ case RK3288_DP:
+ /*
+ * Like Rk3288 DisplayPort TRM indicate that "Main link
+ * containing 4 physical lanes of 2.7/1.62 Gbps/lane".
+ */
+ video_info->max_link_rate = 0x0A;
+ video_info->max_lane_count = 0x04;
+ break;
+ case EXYNOS_DP:
+ /*
+ * NOTE: those property parseing code is used for
+ * providing backward compatibility for samsung platform.
+ */
+ of_property_read_u32(dp_node, "samsung,link-rate",
+ &video_info->max_link_rate);
+ of_property_read_u32(dp_node, "samsung,lane-count",
+ &video_info->max_lane_count);
+ break;
+ }
+
+ return 0;
+}
+
+int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
+ struct analogix_dp_plat_data *plat_data)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct analogix_dp_device *dp;
+ struct resource *res;
+ unsigned int irq_flags;
+ int ret;
+
+ if (!plat_data) {
+ dev_err(dev, "Invalided input plat_data\n");
+ return -EINVAL;
+ }
+
+ dp = devm_kzalloc(dev, sizeof(struct analogix_dp_device), GFP_KERNEL);
+ if (!dp)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, dp);
+
+ dp->dev = &pdev->dev;
+ dp->dpms_mode = DRM_MODE_DPMS_OFF;
+
+ /*
+ * platform dp driver need containor_of the plat_data to get
+ * the driver private data, so we need to store the point of
+ * plat_data, not the context of plat_data.
+ */
+ dp->plat_data = plat_data;
+
+ ret = analogix_dp_dt_parse_pdata(dp);
+ if (ret)
+ return ret;
+
+ dp->phy = devm_phy_get(dp->dev, "dp");
+ if (IS_ERR(dp->phy)) {
+ dev_err(dp->dev, "no DP phy configured\n");
+ ret = PTR_ERR(dp->phy);
+ if (ret) {
+ /*
+ * phy itself is not enabled, so we can move forward
+ * assigning NULL to phy pointer.
+ */
+ if (ret == -ENOSYS || ret == -ENODEV)
+ dp->phy = NULL;
+ else
+ return ret;
+ }
+ }
+
+ dp->clock = devm_clk_get(&pdev->dev, "dp");
+ if (IS_ERR(dp->clock)) {
+ dev_err(&pdev->dev, "failed to get clock\n");
+ return PTR_ERR(dp->clock);
+ }
+
+ clk_prepare_enable(dp->clock);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ dp->reg_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(dp->reg_base))
+ return PTR_ERR(dp->reg_base);
+
+ dp->force_hpd = of_property_read_bool(dev->of_node, "force-hpd");
+
+ dp->hpd_gpio = of_get_named_gpio(dev->of_node, "hpd-gpios", 0);
+ if (!gpio_is_valid(dp->hpd_gpio))
+ dp->hpd_gpio = of_get_named_gpio(dev->of_node,
+ "samsung,hpd-gpio", 0);
+
+ if (gpio_is_valid(dp->hpd_gpio)) {
+ /*
+ * Set up the hotplug GPIO from the device tree as an interrupt.
+ * Simply specifying a different interrupt in the device tree
+ * doesn't work since we handle hotplug rather differently when
+ * using a GPIO. We also need the actual GPIO specifier so
+ * that we can get the current state of the GPIO.
+ */
+ ret = devm_gpio_request_one(&pdev->dev, dp->hpd_gpio, GPIOF_IN,
+ "hpd_gpio");
+ if (ret) {
+ dev_err(&pdev->dev, "failed to get hpd gpio\n");
+ return ret;
+ }
+ dp->irq = gpio_to_irq(dp->hpd_gpio);
+ irq_flags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;
+ } else {
+ dp->hpd_gpio = -ENODEV;
+ dp->irq = platform_get_irq(pdev, 0);
+ irq_flags = 0;
+ }
+
+ if (dp->irq == -ENXIO) {
+ dev_err(&pdev->dev, "failed to get irq\n");
+ return -ENODEV;
+ }
+
+ pm_runtime_enable(dev);
+
+ phy_power_on(dp->phy);
+
+ if (dp->plat_data->panel) {
+ if (drm_panel_prepare(dp->plat_data->panel)) {
+ DRM_ERROR("failed to setup the panel\n");
+ return -EBUSY;
+ }
+ }
+
+ analogix_dp_init_dp(dp);
+
+ ret = devm_request_threaded_irq(&pdev->dev, dp->irq,
+ analogix_dp_hardirq,
+ analogix_dp_irq_thread,
+ irq_flags, "analogix-dp", dp);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request irq\n");
+ goto err_disable_pm_runtime;
+ }
+ disable_irq(dp->irq);
+
+ dp->drm_dev = drm_dev;
+ dp->encoder = dp->plat_data->encoder;
+
+ ret = analogix_dp_create_bridge(drm_dev, dp);
+ if (ret) {
+ DRM_ERROR("failed to create bridge (%d)\n", ret);
+ drm_encoder_cleanup(dp->encoder);
+ goto err_disable_pm_runtime;
+ }
+
+ return 0;
+
+err_disable_pm_runtime:
+ pm_runtime_disable(dev);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(analogix_dp_bind);
+
+void analogix_dp_unbind(struct device *dev, struct device *master,
+ void *data)
+{
+ struct analogix_dp_device *dp = dev_get_drvdata(dev);
+
+ analogix_dp_bridge_disable(dp->bridge);
+
+ if (dp->plat_data->panel) {
+ if (drm_panel_unprepare(dp->plat_data->panel))
+ DRM_ERROR("failed to turnoff the panel\n");
+ }
+
+ pm_runtime_disable(dev);
+}
+EXPORT_SYMBOL_GPL(analogix_dp_unbind);
+
+#ifdef CONFIG_PM
+int analogix_dp_suspend(struct device *dev)
+{
+ struct analogix_dp_device *dp = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(dp->clock);
+
+ if (dp->plat_data->panel) {
+ if (drm_panel_unprepare(dp->plat_data->panel))
+ DRM_ERROR("failed to turnoff the panel\n");
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(analogix_dp_suspend);
+
+int analogix_dp_resume(struct device *dev)
+{
+ struct analogix_dp_device *dp = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(dp->clock);
+ if (ret < 0) {
+ DRM_ERROR("Failed to prepare_enable the clock clk [%d]\n", ret);
+ return ret;
+ }
+
+ if (dp->plat_data->panel) {
+ if (drm_panel_prepare(dp->plat_data->panel)) {
+ DRM_ERROR("failed to setup the panel\n");
+ return -EBUSY;
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(analogix_dp_resume);
+#endif
+
+MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
+MODULE_DESCRIPTION("Analogix DP Core Driver");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+/*
+ * Header file for Analogix DP (Display Port) core interface driver.
+ *
+ * Copyright (C) 2012 Samsung Electronics Co., Ltd.
+ * Author: Jingoo Han <jg1.han@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef _ANALOGIX_DP_CORE_H
+#define _ANALOGIX_DP_CORE_H
+
+#include <drm/drm_crtc.h>
+#include <drm/drm_dp_helper.h>
+
+#define DP_TIMEOUT_LOOP_COUNT 100
+#define MAX_CR_LOOP 5
+#define MAX_EQ_LOOP 5
+
+/* I2C EDID Chip ID, Slave Address */
+#define I2C_EDID_DEVICE_ADDR 0x50
+#define I2C_E_EDID_DEVICE_ADDR 0x30
+
+#define EDID_BLOCK_LENGTH 0x80
+#define EDID_HEADER_PATTERN 0x00
+#define EDID_EXTENSION_FLAG 0x7e
+#define EDID_CHECKSUM 0x7f
+
+/* DP_MAX_LANE_COUNT */
+#define DPCD_ENHANCED_FRAME_CAP(x) (((x) >> 7) & 0x1)
+#define DPCD_MAX_LANE_COUNT(x) ((x) & 0x1f)
+
+/* DP_LANE_COUNT_SET */
+#define DPCD_LANE_COUNT_SET(x) ((x) & 0x1f)
+
+/* DP_TRAINING_LANE0_SET */
+#define DPCD_PRE_EMPHASIS_SET(x) (((x) & 0x3) << 3)
+#define DPCD_PRE_EMPHASIS_GET(x) (((x) >> 3) & 0x3)
+#define DPCD_VOLTAGE_SWING_SET(x) (((x) & 0x3) << 0)
+#define DPCD_VOLTAGE_SWING_GET(x) (((x) >> 0) & 0x3)
+
+enum link_lane_count_type {
+ LANE_COUNT1 = 1,
+ LANE_COUNT2 = 2,
+ LANE_COUNT4 = 4
+};
+
+enum link_training_state {
+ START,
+ CLOCK_RECOVERY,
+ EQUALIZER_TRAINING,
+ FINISHED,
+ FAILED
+};
+
+enum voltage_swing_level {
+ VOLTAGE_LEVEL_0,
+ VOLTAGE_LEVEL_1,
+ VOLTAGE_LEVEL_2,
+ VOLTAGE_LEVEL_3,
+};
+
+enum pre_emphasis_level {
+ PRE_EMPHASIS_LEVEL_0,
+ PRE_EMPHASIS_LEVEL_1,
+ PRE_EMPHASIS_LEVEL_2,
+ PRE_EMPHASIS_LEVEL_3,
+};
+
+enum pattern_set {
+ PRBS7,
+ D10_2,
+ TRAINING_PTN1,
+ TRAINING_PTN2,
+ DP_NONE
+};
+
+enum color_space {
+ COLOR_RGB,
+ COLOR_YCBCR422,
+ COLOR_YCBCR444
+};
+
+enum color_depth {
+ COLOR_6,
+ COLOR_8,
+ COLOR_10,
+ COLOR_12
+};
+
+enum color_coefficient {
+ COLOR_YCBCR601,
+ COLOR_YCBCR709
+};
+
+enum dynamic_range {
+ VESA,
+ CEA
+};
+
+enum pll_status {
+ PLL_UNLOCKED,
+ PLL_LOCKED
+};
+
+enum clock_recovery_m_value_type {
+ CALCULATED_M,
+ REGISTER_M
+};
+
+enum video_timing_recognition_type {
+ VIDEO_TIMING_FROM_CAPTURE,
+ VIDEO_TIMING_FROM_REGISTER
+};
+
+enum analog_power_block {
+ AUX_BLOCK,
+ CH0_BLOCK,
+ CH1_BLOCK,
+ CH2_BLOCK,
+ CH3_BLOCK,
+ ANALOG_TOTAL,
+ POWER_ALL
+};
+
+enum dp_irq_type {
+ DP_IRQ_TYPE_HP_CABLE_IN,
+ DP_IRQ_TYPE_HP_CABLE_OUT,
+ DP_IRQ_TYPE_HP_CHANGE,
+ DP_IRQ_TYPE_UNKNOWN,
+};
+
+struct video_info {
+ char *name;
+
+ bool h_sync_polarity;
+ bool v_sync_polarity;
+ bool interlaced;
+
+ enum color_space color_space;
+ enum dynamic_range dynamic_range;
+ enum color_coefficient ycbcr_coeff;
+ enum color_depth color_depth;
+
+ int max_link_rate;
+ enum link_lane_count_type max_lane_count;
+};
+
+struct link_train {
+ int eq_loop;
+ int cr_loop[4];
+
+ u8 link_rate;
+ u8 lane_count;
+ u8 training_lane[4];
+
+ enum link_training_state lt_state;
+};
+
+struct analogix_dp_device {
+ struct drm_encoder *encoder;
+ struct device *dev;
+ struct drm_device *drm_dev;
+ struct drm_connector connector;
+ struct drm_bridge *bridge;
+ struct clk *clock;
+ unsigned int irq;
+ void __iomem *reg_base;
+
+ struct video_info video_info;
+ struct link_train link_train;
+ struct phy *phy;
+ int dpms_mode;
+ int hpd_gpio;
+ bool force_hpd;
+ unsigned char edid[EDID_BLOCK_LENGTH * 2];
+
+ struct analogix_dp_plat_data *plat_data;
+};
+
+/* analogix_dp_reg.c */
+void analogix_dp_enable_video_mute(struct analogix_dp_device *dp, bool enable);
+void analogix_dp_stop_video(struct analogix_dp_device *dp);
+void analogix_dp_lane_swap(struct analogix_dp_device *dp, bool enable);
+void analogix_dp_init_analog_param(struct analogix_dp_device *dp);
+void analogix_dp_init_interrupt(struct analogix_dp_device *dp);
+void analogix_dp_reset(struct analogix_dp_device *dp);
+void analogix_dp_swreset(struct analogix_dp_device *dp);
+void analogix_dp_config_interrupt(struct analogix_dp_device *dp);
+void analogix_dp_mute_hpd_interrupt(struct analogix_dp_device *dp);
+void analogix_dp_unmute_hpd_interrupt(struct analogix_dp_device *dp);
+enum pll_status analogix_dp_get_pll_lock_status(struct analogix_dp_device *dp);
+void analogix_dp_set_pll_power_down(struct analogix_dp_device *dp, bool enable);
+void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
+ enum analog_power_block block,
+ bool enable);
+void analogix_dp_init_analog_func(struct analogix_dp_device *dp);
+void analogix_dp_init_hpd(struct analogix_dp_device *dp);
+void analogix_dp_force_hpd(struct analogix_dp_device *dp);
+enum dp_irq_type analogix_dp_get_irq_type(struct analogix_dp_device *dp);
+void analogix_dp_clear_hotplug_interrupts(struct analogix_dp_device *dp);
+void analogix_dp_reset_aux(struct analogix_dp_device *dp);
+void analogix_dp_init_aux(struct analogix_dp_device *dp);
+int analogix_dp_get_plug_in_status(struct analogix_dp_device *dp);
+void analogix_dp_enable_sw_function(struct analogix_dp_device *dp);
+int analogix_dp_start_aux_transaction(struct analogix_dp_device *dp);
+int analogix_dp_write_byte_to_dpcd(struct analogix_dp_device *dp,
+ unsigned int reg_addr,
+ unsigned char data);
+int analogix_dp_read_byte_from_dpcd(struct analogix_dp_device *dp,
+ unsigned int reg_addr,
+ unsigned char *data);
+int analogix_dp_write_bytes_to_dpcd(struct analogix_dp_device *dp,
+ unsigned int reg_addr,
+ unsigned int count,
+ unsigned char data[]);
+int analogix_dp_read_bytes_from_dpcd(struct analogix_dp_device *dp,
+ unsigned int reg_addr,
+ unsigned int count,
+ unsigned char data[]);
+int analogix_dp_select_i2c_device(struct analogix_dp_device *dp,
+ unsigned int device_addr,
+ unsigned int reg_addr);
+int analogix_dp_read_byte_from_i2c(struct analogix_dp_device *dp,
+ unsigned int device_addr,
+ unsigned int reg_addr,
+ unsigned int *data);
+int analogix_dp_read_bytes_from_i2c(struct analogix_dp_device *dp,
+ unsigned int device_addr,
+ unsigned int reg_addr,
+ unsigned int count,
+ unsigned char edid[]);
+void analogix_dp_set_link_bandwidth(struct analogix_dp_device *dp, u32 bwtype);
+void analogix_dp_get_link_bandwidth(struct analogix_dp_device *dp, u32 *bwtype);
+void analogix_dp_set_lane_count(struct analogix_dp_device *dp, u32 count);
+void analogix_dp_get_lane_count(struct analogix_dp_device *dp, u32 *count);
+void analogix_dp_enable_enhanced_mode(struct analogix_dp_device *dp,
+ bool enable);
+void analogix_dp_set_training_pattern(struct analogix_dp_device *dp,
+ enum pattern_set pattern);
+void analogix_dp_set_lane0_pre_emphasis(struct analogix_dp_device *dp,
+ u32 level);
+void analogix_dp_set_lane1_pre_emphasis(struct analogix_dp_device *dp,
+ u32 level);
+void analogix_dp_set_lane2_pre_emphasis(struct analogix_dp_device *dp,
+ u32 level);
+void analogix_dp_set_lane3_pre_emphasis(struct analogix_dp_device *dp,
+ u32 level);
+void analogix_dp_set_lane0_link_training(struct analogix_dp_device *dp,
+ u32 training_lane);
+void analogix_dp_set_lane1_link_training(struct analogix_dp_device *dp,
+ u32 training_lane);
+void analogix_dp_set_lane2_link_training(struct analogix_dp_device *dp,
+ u32 training_lane);
+void analogix_dp_set_lane3_link_training(struct analogix_dp_device *dp,
+ u32 training_lane);
+u32 analogix_dp_get_lane0_link_training(struct analogix_dp_device *dp);
+u32 analogix_dp_get_lane1_link_training(struct analogix_dp_device *dp);
+u32 analogix_dp_get_lane2_link_training(struct analogix_dp_device *dp);
+u32 analogix_dp_get_lane3_link_training(struct analogix_dp_device *dp);
+void analogix_dp_reset_macro(struct analogix_dp_device *dp);
+void analogix_dp_init_video(struct analogix_dp_device *dp);
+
+void analogix_dp_set_video_color_format(struct analogix_dp_device *dp);
+int analogix_dp_is_slave_video_stream_clock_on(struct analogix_dp_device *dp);
+void analogix_dp_set_video_cr_mn(struct analogix_dp_device *dp,
+ enum clock_recovery_m_value_type type,
+ u32 m_value,
+ u32 n_value);
+void analogix_dp_set_video_timing_mode(struct analogix_dp_device *dp, u32 type);
+void analogix_dp_enable_video_master(struct analogix_dp_device *dp,
+ bool enable);
+void analogix_dp_start_video(struct analogix_dp_device *dp);
+int analogix_dp_is_video_stream_on(struct analogix_dp_device *dp);
+void analogix_dp_config_video_slave_mode(struct analogix_dp_device *dp);
+void analogix_dp_enable_scrambling(struct analogix_dp_device *dp);
+void analogix_dp_disable_scrambling(struct analogix_dp_device *dp);
+#endif /* _ANALOGIX_DP_CORE_H */
--- /dev/null
+/*
+ * Analogix DP (Display port) core register interface driver.
+ *
+ * Copyright (C) 2012 Samsung Electronics Co., Ltd.
+ * Author: Jingoo Han <jg1.han@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+
+#include <drm/bridge/analogix_dp.h>
+
+#include "analogix_dp_core.h"
+#include "analogix_dp_reg.h"
+
+#define COMMON_INT_MASK_1 0
+#define COMMON_INT_MASK_2 0
+#define COMMON_INT_MASK_3 0
+#define COMMON_INT_MASK_4 (HOTPLUG_CHG | HPD_LOST | PLUG)
+#define INT_STA_MASK INT_HPD
+
+void analogix_dp_enable_video_mute(struct analogix_dp_device *dp, bool enable)
+{
+ u32 reg;
+
+ if (enable) {
+ reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+ reg |= HDCP_VIDEO_MUTE;
+ writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+ } else {
+ reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+ reg &= ~HDCP_VIDEO_MUTE;
+ writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+ }
+}
+
+void analogix_dp_stop_video(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+ reg &= ~VIDEO_EN;
+ writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+}
+
+void analogix_dp_lane_swap(struct analogix_dp_device *dp, bool enable)
+{
+ u32 reg;
+
+ if (enable)
+ reg = LANE3_MAP_LOGIC_LANE_0 | LANE2_MAP_LOGIC_LANE_1 |
+ LANE1_MAP_LOGIC_LANE_2 | LANE0_MAP_LOGIC_LANE_3;
+ else
+ reg = LANE3_MAP_LOGIC_LANE_3 | LANE2_MAP_LOGIC_LANE_2 |
+ LANE1_MAP_LOGIC_LANE_1 | LANE0_MAP_LOGIC_LANE_0;
+
+ writel(reg, dp->reg_base + ANALOGIX_DP_LANE_MAP);
+}
+
+void analogix_dp_init_analog_param(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = TX_TERMINAL_CTRL_50_OHM;
+ writel(reg, dp->reg_base + ANALOGIX_DP_ANALOG_CTL_1);
+
+ reg = SEL_24M | TX_DVDD_BIT_1_0625V;
+ writel(reg, dp->reg_base + ANALOGIX_DP_ANALOG_CTL_2);
+
+ if (dp->plat_data && (dp->plat_data->dev_type == RK3288_DP)) {
+ writel(REF_CLK_24M, dp->reg_base + ANALOGIX_DP_PLL_REG_1);
+ writel(0x95, dp->reg_base + ANALOGIX_DP_PLL_REG_2);
+ writel(0x40, dp->reg_base + ANALOGIX_DP_PLL_REG_3);
+ writel(0x58, dp->reg_base + ANALOGIX_DP_PLL_REG_4);
+ writel(0x22, dp->reg_base + ANALOGIX_DP_PLL_REG_5);
+ }
+
+ reg = DRIVE_DVDD_BIT_1_0625V | VCO_BIT_600_MICRO;
+ writel(reg, dp->reg_base + ANALOGIX_DP_ANALOG_CTL_3);
+
+ reg = PD_RING_OSC | AUX_TERMINAL_CTRL_50_OHM |
+ TX_CUR1_2X | TX_CUR_16_MA;
+ writel(reg, dp->reg_base + ANALOGIX_DP_PLL_FILTER_CTL_1);
+
+ reg = CH3_AMP_400_MV | CH2_AMP_400_MV |
+ CH1_AMP_400_MV | CH0_AMP_400_MV;
+ writel(reg, dp->reg_base + ANALOGIX_DP_TX_AMP_TUNING_CTL);
+}
+
+void analogix_dp_init_interrupt(struct analogix_dp_device *dp)
+{
+ /* Set interrupt pin assertion polarity as high */
+ writel(INT_POL1 | INT_POL0, dp->reg_base + ANALOGIX_DP_INT_CTL);
+
+ /* Clear pending regisers */
+ writel(0xff, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_1);
+ writel(0x4f, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_2);
+ writel(0xe0, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_3);
+ writel(0xe7, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_4);
+ writel(0x63, dp->reg_base + ANALOGIX_DP_INT_STA);
+
+ /* 0:mask,1: unmask */
+ writel(0x00, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_1);
+ writel(0x00, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_2);
+ writel(0x00, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_3);
+ writel(0x00, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_4);
+ writel(0x00, dp->reg_base + ANALOGIX_DP_INT_STA_MASK);
+}
+
+void analogix_dp_reset(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ analogix_dp_stop_video(dp);
+ analogix_dp_enable_video_mute(dp, 0);
+
+ reg = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N |
+ AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N |
+ HDCP_FUNC_EN_N | SW_FUNC_EN_N;
+ writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
+
+ reg = SSC_FUNC_EN_N | AUX_FUNC_EN_N |
+ SERDES_FIFO_FUNC_EN_N |
+ LS_CLK_DOMAIN_FUNC_EN_N;
+ writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+
+ usleep_range(20, 30);
+
+ analogix_dp_lane_swap(dp, 0);
+
+ writel(0x0, dp->reg_base + ANALOGIX_DP_SYS_CTL_1);
+ writel(0x40, dp->reg_base + ANALOGIX_DP_SYS_CTL_2);
+ writel(0x0, dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+ writel(0x0, dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+
+ writel(0x0, dp->reg_base + ANALOGIX_DP_PKT_SEND_CTL);
+ writel(0x0, dp->reg_base + ANALOGIX_DP_HDCP_CTL);
+
+ writel(0x5e, dp->reg_base + ANALOGIX_DP_HPD_DEGLITCH_L);
+ writel(0x1a, dp->reg_base + ANALOGIX_DP_HPD_DEGLITCH_H);
+
+ writel(0x10, dp->reg_base + ANALOGIX_DP_LINK_DEBUG_CTL);
+
+ writel(0x0, dp->reg_base + ANALOGIX_DP_PHY_TEST);
+
+ writel(0x0, dp->reg_base + ANALOGIX_DP_VIDEO_FIFO_THRD);
+ writel(0x20, dp->reg_base + ANALOGIX_DP_AUDIO_MARGIN);
+
+ writel(0x4, dp->reg_base + ANALOGIX_DP_M_VID_GEN_FILTER_TH);
+ writel(0x2, dp->reg_base + ANALOGIX_DP_M_AUD_GEN_FILTER_TH);
+
+ writel(0x00000101, dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL);
+}
+
+void analogix_dp_swreset(struct analogix_dp_device *dp)
+{
+ writel(RESET_DP_TX, dp->reg_base + ANALOGIX_DP_TX_SW_RESET);
+}
+
+void analogix_dp_config_interrupt(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ /* 0: mask, 1: unmask */
+ reg = COMMON_INT_MASK_1;
+ writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_1);
+
+ reg = COMMON_INT_MASK_2;
+ writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_2);
+
+ reg = COMMON_INT_MASK_3;
+ writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_3);
+
+ reg = COMMON_INT_MASK_4;
+ writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_4);
+
+ reg = INT_STA_MASK;
+ writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA_MASK);
+}
+
+void analogix_dp_mute_hpd_interrupt(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ /* 0: mask, 1: unmask */
+ reg = readl(dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_4);
+ reg &= ~COMMON_INT_MASK_4;
+ writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_4);
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA_MASK);
+ reg &= ~INT_STA_MASK;
+ writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA_MASK);
+}
+
+void analogix_dp_unmute_hpd_interrupt(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ /* 0: mask, 1: unmask */
+ reg = COMMON_INT_MASK_4;
+ writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_4);
+
+ reg = INT_STA_MASK;
+ writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA_MASK);
+}
+
+enum pll_status analogix_dp_get_pll_lock_status(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_DEBUG_CTL);
+ if (reg & PLL_LOCK)
+ return PLL_LOCKED;
+ else
+ return PLL_UNLOCKED;
+}
+
+void analogix_dp_set_pll_power_down(struct analogix_dp_device *dp, bool enable)
+{
+ u32 reg;
+
+ if (enable) {
+ reg = readl(dp->reg_base + ANALOGIX_DP_PLL_CTL);
+ reg |= DP_PLL_PD;
+ writel(reg, dp->reg_base + ANALOGIX_DP_PLL_CTL);
+ } else {
+ reg = readl(dp->reg_base + ANALOGIX_DP_PLL_CTL);
+ reg &= ~DP_PLL_PD;
+ writel(reg, dp->reg_base + ANALOGIX_DP_PLL_CTL);
+ }
+}
+
+void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
+ enum analog_power_block block,
+ bool enable)
+{
+ u32 reg;
+ u32 phy_pd_addr = ANALOGIX_DP_PHY_PD;
+
+ if (dp->plat_data && (dp->plat_data->dev_type == RK3288_DP))
+ phy_pd_addr = ANALOGIX_DP_PD;
+
+ switch (block) {
+ case AUX_BLOCK:
+ if (enable) {
+ reg = readl(dp->reg_base + phy_pd_addr);
+ reg |= AUX_PD;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ } else {
+ reg = readl(dp->reg_base + phy_pd_addr);
+ reg &= ~AUX_PD;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ }
+ break;
+ case CH0_BLOCK:
+ if (enable) {
+ reg = readl(dp->reg_base + phy_pd_addr);
+ reg |= CH0_PD;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ } else {
+ reg = readl(dp->reg_base + phy_pd_addr);
+ reg &= ~CH0_PD;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ }
+ break;
+ case CH1_BLOCK:
+ if (enable) {
+ reg = readl(dp->reg_base + phy_pd_addr);
+ reg |= CH1_PD;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ } else {
+ reg = readl(dp->reg_base + phy_pd_addr);
+ reg &= ~CH1_PD;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ }
+ break;
+ case CH2_BLOCK:
+ if (enable) {
+ reg = readl(dp->reg_base + phy_pd_addr);
+ reg |= CH2_PD;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ } else {
+ reg = readl(dp->reg_base + phy_pd_addr);
+ reg &= ~CH2_PD;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ }
+ break;
+ case CH3_BLOCK:
+ if (enable) {
+ reg = readl(dp->reg_base + phy_pd_addr);
+ reg |= CH3_PD;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ } else {
+ reg = readl(dp->reg_base + phy_pd_addr);
+ reg &= ~CH3_PD;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ }
+ break;
+ case ANALOG_TOTAL:
+ if (enable) {
+ reg = readl(dp->reg_base + phy_pd_addr);
+ reg |= DP_PHY_PD;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ } else {
+ reg = readl(dp->reg_base + phy_pd_addr);
+ reg &= ~DP_PHY_PD;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ }
+ break;
+ case POWER_ALL:
+ if (enable) {
+ reg = DP_PHY_PD | AUX_PD | CH3_PD | CH2_PD |
+ CH1_PD | CH0_PD;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ } else {
+ writel(0x00, dp->reg_base + phy_pd_addr);
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+void analogix_dp_init_analog_func(struct analogix_dp_device *dp)
+{
+ u32 reg;
+ int timeout_loop = 0;
+
+ analogix_dp_set_analog_power_down(dp, POWER_ALL, 0);
+
+ reg = PLL_LOCK_CHG;
+ writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_1);
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_DEBUG_CTL);
+ reg &= ~(F_PLL_LOCK | PLL_LOCK_CTRL);
+ writel(reg, dp->reg_base + ANALOGIX_DP_DEBUG_CTL);
+
+ /* Power up PLL */
+ if (analogix_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
+ analogix_dp_set_pll_power_down(dp, 0);
+
+ while (analogix_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
+ timeout_loop++;
+ if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
+ dev_err(dp->dev, "failed to get pll lock status\n");
+ return;
+ }
+ usleep_range(10, 20);
+ }
+ }
+
+ /* Enable Serdes FIFO function and Link symbol clock domain module */
+ reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+ reg &= ~(SERDES_FIFO_FUNC_EN_N | LS_CLK_DOMAIN_FUNC_EN_N
+ | AUX_FUNC_EN_N);
+ writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+}
+
+void analogix_dp_clear_hotplug_interrupts(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ if (gpio_is_valid(dp->hpd_gpio))
+ return;
+
+ reg = HOTPLUG_CHG | HPD_LOST | PLUG;
+ writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_4);
+
+ reg = INT_HPD;
+ writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA);
+}
+
+void analogix_dp_init_hpd(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ if (gpio_is_valid(dp->hpd_gpio))
+ return;
+
+ analogix_dp_clear_hotplug_interrupts(dp);
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+ reg &= ~(F_HPD | HPD_CTRL);
+ writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+}
+
+void analogix_dp_force_hpd(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+ reg = (F_HPD | HPD_CTRL);
+ writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+}
+
+enum dp_irq_type analogix_dp_get_irq_type(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ if (gpio_is_valid(dp->hpd_gpio)) {
+ reg = gpio_get_value(dp->hpd_gpio);
+ if (reg)
+ return DP_IRQ_TYPE_HP_CABLE_IN;
+ else
+ return DP_IRQ_TYPE_HP_CABLE_OUT;
+ } else {
+ /* Parse hotplug interrupt status register */
+ reg = readl(dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_4);
+
+ if (reg & PLUG)
+ return DP_IRQ_TYPE_HP_CABLE_IN;
+
+ if (reg & HPD_LOST)
+ return DP_IRQ_TYPE_HP_CABLE_OUT;
+
+ if (reg & HOTPLUG_CHG)
+ return DP_IRQ_TYPE_HP_CHANGE;
+
+ return DP_IRQ_TYPE_UNKNOWN;
+ }
+}
+
+void analogix_dp_reset_aux(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ /* Disable AUX channel module */
+ reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+ reg |= AUX_FUNC_EN_N;
+ writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+}
+
+void analogix_dp_init_aux(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ /* Clear inerrupts related to AUX channel */
+ reg = RPLY_RECEIV | AUX_ERR;
+ writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA);
+
+ analogix_dp_reset_aux(dp);
+
+ /* Disable AUX transaction H/W retry */
+ if (dp->plat_data && (dp->plat_data->dev_type == RK3288_DP))
+ reg = AUX_BIT_PERIOD_EXPECTED_DELAY(0) |
+ AUX_HW_RETRY_COUNT_SEL(3) |
+ AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
+ else
+ reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) |
+ AUX_HW_RETRY_COUNT_SEL(0) |
+ AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_HW_RETRY_CTL);
+
+ /* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */
+ reg = DEFER_CTRL_EN | DEFER_COUNT(1);
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_DEFER_CTL);
+
+ /* Enable AUX channel module */
+ reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+ reg &= ~AUX_FUNC_EN_N;
+ writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+}
+
+int analogix_dp_get_plug_in_status(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ if (gpio_is_valid(dp->hpd_gpio)) {
+ if (gpio_get_value(dp->hpd_gpio))
+ return 0;
+ } else {
+ reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+ if (reg & HPD_STATUS)
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+void analogix_dp_enable_sw_function(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
+ reg &= ~SW_FUNC_EN_N;
+ writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
+}
+
+int analogix_dp_start_aux_transaction(struct analogix_dp_device *dp)
+{
+ int reg;
+ int retval = 0;
+ int timeout_loop = 0;
+
+ /* Enable AUX CH operation */
+ reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
+ reg |= AUX_EN;
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
+
+ /* Is AUX CH command reply received? */
+ reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
+ while (!(reg & RPLY_RECEIV)) {
+ timeout_loop++;
+ if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
+ dev_err(dp->dev, "AUX CH command reply failed!\n");
+ return -ETIMEDOUT;
+ }
+ reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
+ usleep_range(10, 11);
+ }
+
+ /* Clear interrupt source for AUX CH command reply */
+ writel(RPLY_RECEIV, dp->reg_base + ANALOGIX_DP_INT_STA);
+
+ /* Clear interrupt source for AUX CH access error */
+ reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
+ if (reg & AUX_ERR) {
+ writel(AUX_ERR, dp->reg_base + ANALOGIX_DP_INT_STA);
+ return -EREMOTEIO;
+ }
+
+ /* Check AUX CH error access status */
+ reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_STA);
+ if ((reg & AUX_STATUS_MASK) != 0) {
+ dev_err(dp->dev, "AUX CH error happens: %d\n\n",
+ reg & AUX_STATUS_MASK);
+ return -EREMOTEIO;
+ }
+
+ return retval;
+}
+
+int analogix_dp_write_byte_to_dpcd(struct analogix_dp_device *dp,
+ unsigned int reg_addr,
+ unsigned char data)
+{
+ u32 reg;
+ int i;
+ int retval;
+
+ for (i = 0; i < 3; i++) {
+ /* Clear AUX CH data buffer */
+ reg = BUF_CLR;
+ writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL);
+
+ /* Select DPCD device address */
+ reg = AUX_ADDR_7_0(reg_addr);
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0);
+ reg = AUX_ADDR_15_8(reg_addr);
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8);
+ reg = AUX_ADDR_19_16(reg_addr);
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16);
+
+ /* Write data buffer */
+ reg = (unsigned int)data;
+ writel(reg, dp->reg_base + ANALOGIX_DP_BUF_DATA_0);
+
+ /*
+ * Set DisplayPort transaction and write 1 byte
+ * If bit 3 is 1, DisplayPort transaction.
+ * If Bit 3 is 0, I2C transaction.
+ */
+ reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE;
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1);
+
+ /* Start AUX transaction */
+ retval = analogix_dp_start_aux_transaction(dp);
+ if (retval == 0)
+ break;
+
+ dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
+ }
+
+ return retval;
+}
+
+int analogix_dp_read_byte_from_dpcd(struct analogix_dp_device *dp,
+ unsigned int reg_addr,
+ unsigned char *data)
+{
+ u32 reg;
+ int i;
+ int retval;
+
+ for (i = 0; i < 3; i++) {
+ /* Clear AUX CH data buffer */
+ reg = BUF_CLR;
+ writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL);
+
+ /* Select DPCD device address */
+ reg = AUX_ADDR_7_0(reg_addr);
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0);
+ reg = AUX_ADDR_15_8(reg_addr);
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8);
+ reg = AUX_ADDR_19_16(reg_addr);
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16);
+
+ /*
+ * Set DisplayPort transaction and read 1 byte
+ * If bit 3 is 1, DisplayPort transaction.
+ * If Bit 3 is 0, I2C transaction.
+ */
+ reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ;
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1);
+
+ /* Start AUX transaction */
+ retval = analogix_dp_start_aux_transaction(dp);
+ if (retval == 0)
+ break;
+
+ dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
+ }
+
+ /* Read data buffer */
+ reg = readl(dp->reg_base + ANALOGIX_DP_BUF_DATA_0);
+ *data = (unsigned char)(reg & 0xff);
+
+ return retval;
+}
+
+int analogix_dp_write_bytes_to_dpcd(struct analogix_dp_device *dp,
+ unsigned int reg_addr,
+ unsigned int count,
+ unsigned char data[])
+{
+ u32 reg;
+ unsigned int start_offset;
+ unsigned int cur_data_count;
+ unsigned int cur_data_idx;
+ int i;
+ int retval = 0;
+
+ /* Clear AUX CH data buffer */
+ reg = BUF_CLR;
+ writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL);
+
+ start_offset = 0;
+ while (start_offset < count) {
+ /* Buffer size of AUX CH is 16 * 4bytes */
+ if ((count - start_offset) > 16)
+ cur_data_count = 16;
+ else
+ cur_data_count = count - start_offset;
+
+ for (i = 0; i < 3; i++) {
+ /* Select DPCD device address */
+ reg = AUX_ADDR_7_0(reg_addr + start_offset);
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0);
+ reg = AUX_ADDR_15_8(reg_addr + start_offset);
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8);
+ reg = AUX_ADDR_19_16(reg_addr + start_offset);
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16);
+
+ for (cur_data_idx = 0; cur_data_idx < cur_data_count;
+ cur_data_idx++) {
+ reg = data[start_offset + cur_data_idx];
+ writel(reg, dp->reg_base +
+ ANALOGIX_DP_BUF_DATA_0 +
+ 4 * cur_data_idx);
+ }
+
+ /*
+ * Set DisplayPort transaction and write
+ * If bit 3 is 1, DisplayPort transaction.
+ * If Bit 3 is 0, I2C transaction.
+ */
+ reg = AUX_LENGTH(cur_data_count) |
+ AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE;
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1);
+
+ /* Start AUX transaction */
+ retval = analogix_dp_start_aux_transaction(dp);
+ if (retval == 0)
+ break;
+
+ dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
+ __func__);
+ }
+
+ start_offset += cur_data_count;
+ }
+
+ return retval;
+}
+
+int analogix_dp_read_bytes_from_dpcd(struct analogix_dp_device *dp,
+ unsigned int reg_addr,
+ unsigned int count,
+ unsigned char data[])
+{
+ u32 reg;
+ unsigned int start_offset;
+ unsigned int cur_data_count;
+ unsigned int cur_data_idx;
+ int i;
+ int retval = 0;
+
+ /* Clear AUX CH data buffer */
+ reg = BUF_CLR;
+ writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL);
+
+ start_offset = 0;
+ while (start_offset < count) {
+ /* Buffer size of AUX CH is 16 * 4bytes */
+ if ((count - start_offset) > 16)
+ cur_data_count = 16;
+ else
+ cur_data_count = count - start_offset;
+
+ /* AUX CH Request Transaction process */
+ for (i = 0; i < 3; i++) {
+ /* Select DPCD device address */
+ reg = AUX_ADDR_7_0(reg_addr + start_offset);
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0);
+ reg = AUX_ADDR_15_8(reg_addr + start_offset);
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8);
+ reg = AUX_ADDR_19_16(reg_addr + start_offset);
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16);
+
+ /*
+ * Set DisplayPort transaction and read
+ * If bit 3 is 1, DisplayPort transaction.
+ * If Bit 3 is 0, I2C transaction.
+ */
+ reg = AUX_LENGTH(cur_data_count) |
+ AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ;
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1);
+
+ /* Start AUX transaction */
+ retval = analogix_dp_start_aux_transaction(dp);
+ if (retval == 0)
+ break;
+
+ dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
+ __func__);
+ }
+
+ for (cur_data_idx = 0; cur_data_idx < cur_data_count;
+ cur_data_idx++) {
+ reg = readl(dp->reg_base + ANALOGIX_DP_BUF_DATA_0
+ + 4 * cur_data_idx);
+ data[start_offset + cur_data_idx] =
+ (unsigned char)reg;
+ }
+
+ start_offset += cur_data_count;
+ }
+
+ return retval;
+}
+
+int analogix_dp_select_i2c_device(struct analogix_dp_device *dp,
+ unsigned int device_addr,
+ unsigned int reg_addr)
+{
+ u32 reg;
+ int retval;
+
+ /* Set EDID device address */
+ reg = device_addr;
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0);
+ writel(0x0, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8);
+ writel(0x0, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16);
+
+ /* Set offset from base address of EDID device */
+ writel(reg_addr, dp->reg_base + ANALOGIX_DP_BUF_DATA_0);
+
+ /*
+ * Set I2C transaction and write address
+ * If bit 3 is 1, DisplayPort transaction.
+ * If Bit 3 is 0, I2C transaction.
+ */
+ reg = AUX_TX_COMM_I2C_TRANSACTION | AUX_TX_COMM_MOT |
+ AUX_TX_COMM_WRITE;
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1);
+
+ /* Start AUX transaction */
+ retval = analogix_dp_start_aux_transaction(dp);
+ if (retval != 0)
+ dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
+
+ return retval;
+}
+
+int analogix_dp_read_byte_from_i2c(struct analogix_dp_device *dp,
+ unsigned int device_addr,
+ unsigned int reg_addr,
+ unsigned int *data)
+{
+ u32 reg;
+ int i;
+ int retval;
+
+ for (i = 0; i < 3; i++) {
+ /* Clear AUX CH data buffer */
+ reg = BUF_CLR;
+ writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL);
+
+ /* Select EDID device */
+ retval = analogix_dp_select_i2c_device(dp, device_addr,
+ reg_addr);
+ if (retval != 0)
+ continue;
+
+ /*
+ * Set I2C transaction and read data
+ * If bit 3 is 1, DisplayPort transaction.
+ * If Bit 3 is 0, I2C transaction.
+ */
+ reg = AUX_TX_COMM_I2C_TRANSACTION |
+ AUX_TX_COMM_READ;
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1);
+
+ /* Start AUX transaction */
+ retval = analogix_dp_start_aux_transaction(dp);
+ if (retval == 0)
+ break;
+
+ dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
+ }
+
+ /* Read data */
+ if (retval == 0)
+ *data = readl(dp->reg_base + ANALOGIX_DP_BUF_DATA_0);
+
+ return retval;
+}
+
+int analogix_dp_read_bytes_from_i2c(struct analogix_dp_device *dp,
+ unsigned int device_addr,
+ unsigned int reg_addr,
+ unsigned int count,
+ unsigned char edid[])
+{
+ u32 reg;
+ unsigned int i, j;
+ unsigned int cur_data_idx;
+ unsigned int defer = 0;
+ int retval = 0;
+
+ for (i = 0; i < count; i += 16) {
+ for (j = 0; j < 3; j++) {
+ /* Clear AUX CH data buffer */
+ reg = BUF_CLR;
+ writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL);
+
+ /* Set normal AUX CH command */
+ reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
+ reg &= ~ADDR_ONLY;
+ writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
+
+ /*
+ * If Rx sends defer, Tx sends only reads
+ * request without sending address
+ */
+ if (!defer)
+ retval = analogix_dp_select_i2c_device(dp,
+ device_addr, reg_addr + i);
+ else
+ defer = 0;
+
+ if (retval == 0) {
+ /*
+ * Set I2C transaction and write data
+ * If bit 3 is 1, DisplayPort transaction.
+ * If Bit 3 is 0, I2C transaction.
+ */
+ reg = AUX_LENGTH(16) |
+ AUX_TX_COMM_I2C_TRANSACTION |
+ AUX_TX_COMM_READ;
+ writel(reg, dp->reg_base +
+ ANALOGIX_DP_AUX_CH_CTL_1);
+
+ /* Start AUX transaction */
+ retval = analogix_dp_start_aux_transaction(dp);
+ if (retval == 0)
+ break;
+
+ dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
+ __func__);
+ }
+ /* Check if Rx sends defer */
+ reg = readl(dp->reg_base + ANALOGIX_DP_AUX_RX_COMM);
+ if (reg == AUX_RX_COMM_AUX_DEFER ||
+ reg == AUX_RX_COMM_I2C_DEFER) {
+ dev_err(dp->dev, "Defer: %d\n\n", reg);
+ defer = 1;
+ }
+ }
+
+ for (cur_data_idx = 0; cur_data_idx < 16; cur_data_idx++) {
+ reg = readl(dp->reg_base + ANALOGIX_DP_BUF_DATA_0
+ + 4 * cur_data_idx);
+ edid[i + cur_data_idx] = (unsigned char)reg;
+ }
+ }
+
+ return retval;
+}
+
+void analogix_dp_set_link_bandwidth(struct analogix_dp_device *dp, u32 bwtype)
+{
+ u32 reg;
+
+ reg = bwtype;
+ if ((bwtype == DP_LINK_BW_2_7) || (bwtype == DP_LINK_BW_1_62))
+ writel(reg, dp->reg_base + ANALOGIX_DP_LINK_BW_SET);
+}
+
+void analogix_dp_get_link_bandwidth(struct analogix_dp_device *dp, u32 *bwtype)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_LINK_BW_SET);
+ *bwtype = reg;
+}
+
+void analogix_dp_set_lane_count(struct analogix_dp_device *dp, u32 count)
+{
+ u32 reg;
+
+ reg = count;
+ writel(reg, dp->reg_base + ANALOGIX_DP_LANE_COUNT_SET);
+}
+
+void analogix_dp_get_lane_count(struct analogix_dp_device *dp, u32 *count)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_LANE_COUNT_SET);
+ *count = reg;
+}
+
+void analogix_dp_enable_enhanced_mode(struct analogix_dp_device *dp,
+ bool enable)
+{
+ u32 reg;
+
+ if (enable) {
+ reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+ reg |= ENHANCED;
+ writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+ } else {
+ reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+ reg &= ~ENHANCED;
+ writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+ }
+}
+
+void analogix_dp_set_training_pattern(struct analogix_dp_device *dp,
+ enum pattern_set pattern)
+{
+ u32 reg;
+
+ switch (pattern) {
+ case PRBS7:
+ reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_PRBS7;
+ writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+ break;
+ case D10_2:
+ reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_D10_2;
+ writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+ break;
+ case TRAINING_PTN1:
+ reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN1;
+ writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+ break;
+ case TRAINING_PTN2:
+ reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN2;
+ writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+ break;
+ case DP_NONE:
+ reg = SCRAMBLING_ENABLE |
+ LINK_QUAL_PATTERN_SET_DISABLE |
+ SW_TRAINING_PATTERN_SET_NORMAL;
+ writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+ break;
+ default:
+ break;
+ }
+}
+
+void analogix_dp_set_lane0_pre_emphasis(struct analogix_dp_device *dp,
+ u32 level)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_LN0_LINK_TRAINING_CTL);
+ reg &= ~PRE_EMPHASIS_SET_MASK;
+ reg |= level << PRE_EMPHASIS_SET_SHIFT;
+ writel(reg, dp->reg_base + ANALOGIX_DP_LN0_LINK_TRAINING_CTL);
+}
+
+void analogix_dp_set_lane1_pre_emphasis(struct analogix_dp_device *dp,
+ u32 level)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_LN1_LINK_TRAINING_CTL);
+ reg &= ~PRE_EMPHASIS_SET_MASK;
+ reg |= level << PRE_EMPHASIS_SET_SHIFT;
+ writel(reg, dp->reg_base + ANALOGIX_DP_LN1_LINK_TRAINING_CTL);
+}
+
+void analogix_dp_set_lane2_pre_emphasis(struct analogix_dp_device *dp,
+ u32 level)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_LN2_LINK_TRAINING_CTL);
+ reg &= ~PRE_EMPHASIS_SET_MASK;
+ reg |= level << PRE_EMPHASIS_SET_SHIFT;
+ writel(reg, dp->reg_base + ANALOGIX_DP_LN2_LINK_TRAINING_CTL);
+}
+
+void analogix_dp_set_lane3_pre_emphasis(struct analogix_dp_device *dp,
+ u32 level)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_LN3_LINK_TRAINING_CTL);
+ reg &= ~PRE_EMPHASIS_SET_MASK;
+ reg |= level << PRE_EMPHASIS_SET_SHIFT;
+ writel(reg, dp->reg_base + ANALOGIX_DP_LN3_LINK_TRAINING_CTL);
+}
+
+void analogix_dp_set_lane0_link_training(struct analogix_dp_device *dp,
+ u32 training_lane)
+{
+ u32 reg;
+
+ reg = training_lane;
+ writel(reg, dp->reg_base + ANALOGIX_DP_LN0_LINK_TRAINING_CTL);
+}
+
+void analogix_dp_set_lane1_link_training(struct analogix_dp_device *dp,
+ u32 training_lane)
+{
+ u32 reg;
+
+ reg = training_lane;
+ writel(reg, dp->reg_base + ANALOGIX_DP_LN1_LINK_TRAINING_CTL);
+}
+
+void analogix_dp_set_lane2_link_training(struct analogix_dp_device *dp,
+ u32 training_lane)
+{
+ u32 reg;
+
+ reg = training_lane;
+ writel(reg, dp->reg_base + ANALOGIX_DP_LN2_LINK_TRAINING_CTL);
+}
+
+void analogix_dp_set_lane3_link_training(struct analogix_dp_device *dp,
+ u32 training_lane)
+{
+ u32 reg;
+
+ reg = training_lane;
+ writel(reg, dp->reg_base + ANALOGIX_DP_LN3_LINK_TRAINING_CTL);
+}
+
+u32 analogix_dp_get_lane0_link_training(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_LN0_LINK_TRAINING_CTL);
+ return reg;
+}
+
+u32 analogix_dp_get_lane1_link_training(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_LN1_LINK_TRAINING_CTL);
+ return reg;
+}
+
+u32 analogix_dp_get_lane2_link_training(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_LN2_LINK_TRAINING_CTL);
+ return reg;
+}
+
+u32 analogix_dp_get_lane3_link_training(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_LN3_LINK_TRAINING_CTL);
+ return reg;
+}
+
+void analogix_dp_reset_macro(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_PHY_TEST);
+ reg |= MACRO_RST;
+ writel(reg, dp->reg_base + ANALOGIX_DP_PHY_TEST);
+
+ /* 10 us is the minimum reset time. */
+ usleep_range(10, 20);
+
+ reg &= ~MACRO_RST;
+ writel(reg, dp->reg_base + ANALOGIX_DP_PHY_TEST);
+}
+
+void analogix_dp_init_video(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = VSYNC_DET | VID_FORMAT_CHG | VID_CLK_CHG;
+ writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_1);
+
+ reg = 0x0;
+ writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_1);
+
+ reg = CHA_CRI(4) | CHA_CTRL;
+ writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_2);
+
+ reg = 0x0;
+ writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+
+ reg = VID_HRES_TH(2) | VID_VRES_TH(0);
+ writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_8);
+}
+
+void analogix_dp_set_video_color_format(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ /* Configure the input color depth, color space, dynamic range */
+ reg = (dp->video_info.dynamic_range << IN_D_RANGE_SHIFT) |
+ (dp->video_info.color_depth << IN_BPC_SHIFT) |
+ (dp->video_info.color_space << IN_COLOR_F_SHIFT);
+ writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_2);
+
+ /* Set Input Color YCbCr Coefficients to ITU601 or ITU709 */
+ reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_3);
+ reg &= ~IN_YC_COEFFI_MASK;
+ if (dp->video_info.ycbcr_coeff)
+ reg |= IN_YC_COEFFI_ITU709;
+ else
+ reg |= IN_YC_COEFFI_ITU601;
+ writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_3);
+}
+
+int analogix_dp_is_slave_video_stream_clock_on(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_1);
+ writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_1);
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_1);
+
+ if (!(reg & DET_STA)) {
+ dev_dbg(dp->dev, "Input stream clock not detected.\n");
+ return -EINVAL;
+ }
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_2);
+ writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_2);
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_2);
+ dev_dbg(dp->dev, "wait SYS_CTL_2.\n");
+
+ if (reg & CHA_STA) {
+ dev_dbg(dp->dev, "Input stream clk is changing\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+void analogix_dp_set_video_cr_mn(struct analogix_dp_device *dp,
+ enum clock_recovery_m_value_type type,
+ u32 m_value, u32 n_value)
+{
+ u32 reg;
+
+ if (type == REGISTER_M) {
+ reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+ reg |= FIX_M_VID;
+ writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+ reg = m_value & 0xff;
+ writel(reg, dp->reg_base + ANALOGIX_DP_M_VID_0);
+ reg = (m_value >> 8) & 0xff;
+ writel(reg, dp->reg_base + ANALOGIX_DP_M_VID_1);
+ reg = (m_value >> 16) & 0xff;
+ writel(reg, dp->reg_base + ANALOGIX_DP_M_VID_2);
+
+ reg = n_value & 0xff;
+ writel(reg, dp->reg_base + ANALOGIX_DP_N_VID_0);
+ reg = (n_value >> 8) & 0xff;
+ writel(reg, dp->reg_base + ANALOGIX_DP_N_VID_1);
+ reg = (n_value >> 16) & 0xff;
+ writel(reg, dp->reg_base + ANALOGIX_DP_N_VID_2);
+ } else {
+ reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+ reg &= ~FIX_M_VID;
+ writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+
+ writel(0x00, dp->reg_base + ANALOGIX_DP_N_VID_0);
+ writel(0x80, dp->reg_base + ANALOGIX_DP_N_VID_1);
+ writel(0x00, dp->reg_base + ANALOGIX_DP_N_VID_2);
+ }
+}
+
+void analogix_dp_set_video_timing_mode(struct analogix_dp_device *dp, u32 type)
+{
+ u32 reg;
+
+ if (type == VIDEO_TIMING_FROM_CAPTURE) {
+ reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+ reg &= ~FORMAT_SEL;
+ writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+ } else {
+ reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+ reg |= FORMAT_SEL;
+ writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+ }
+}
+
+void analogix_dp_enable_video_master(struct analogix_dp_device *dp, bool enable)
+{
+ u32 reg;
+
+ if (enable) {
+ reg = readl(dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL);
+ reg &= ~VIDEO_MODE_MASK;
+ reg |= VIDEO_MASTER_MODE_EN | VIDEO_MODE_MASTER_MODE;
+ writel(reg, dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL);
+ } else {
+ reg = readl(dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL);
+ reg &= ~VIDEO_MODE_MASK;
+ reg |= VIDEO_MODE_SLAVE_MODE;
+ writel(reg, dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL);
+ }
+}
+
+void analogix_dp_start_video(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+ reg |= VIDEO_EN;
+ writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+}
+
+int analogix_dp_is_video_stream_on(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+ writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+ if (!(reg & STRM_VALID)) {
+ dev_dbg(dp->dev, "Input video stream is not detected.\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+void analogix_dp_config_video_slave_mode(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
+ reg &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N);
+ reg |= MASTER_VID_FUNC_EN_N;
+ writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+ reg &= ~INTERACE_SCAN_CFG;
+ reg |= (dp->video_info.interlaced << 2);
+ writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+ reg &= ~VSYNC_POLARITY_CFG;
+ reg |= (dp->video_info.v_sync_polarity << 1);
+ writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+ reg &= ~HSYNC_POLARITY_CFG;
+ reg |= (dp->video_info.h_sync_polarity << 0);
+ writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+
+ reg = AUDIO_MODE_SPDIF_MODE | VIDEO_MODE_SLAVE_MODE;
+ writel(reg, dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL);
+}
+
+void analogix_dp_enable_scrambling(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+ reg &= ~SCRAMBLING_DISABLE;
+ writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+}
+
+void analogix_dp_disable_scrambling(struct analogix_dp_device *dp)
+{
+ u32 reg;
+
+ reg = readl(dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+ reg |= SCRAMBLING_DISABLE;
+ writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+}
--- /dev/null
+/*
+ * Register definition file for Analogix DP core driver
+ *
+ * Copyright (C) 2012 Samsung Electronics Co., Ltd.
+ * Author: Jingoo Han <jg1.han@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _ANALOGIX_DP_REG_H
+#define _ANALOGIX_DP_REG_H
+
+#define ANALOGIX_DP_TX_SW_RESET 0x14
+#define ANALOGIX_DP_FUNC_EN_1 0x18
+#define ANALOGIX_DP_FUNC_EN_2 0x1C
+#define ANALOGIX_DP_VIDEO_CTL_1 0x20
+#define ANALOGIX_DP_VIDEO_CTL_2 0x24
+#define ANALOGIX_DP_VIDEO_CTL_3 0x28
+
+#define ANALOGIX_DP_VIDEO_CTL_8 0x3C
+#define ANALOGIX_DP_VIDEO_CTL_10 0x44
+
+#define ANALOGIX_DP_PLL_REG_1 0xfc
+#define ANALOGIX_DP_PLL_REG_2 0x9e4
+#define ANALOGIX_DP_PLL_REG_3 0x9e8
+#define ANALOGIX_DP_PLL_REG_4 0x9ec
+#define ANALOGIX_DP_PLL_REG_5 0xa00
+
+#define ANALOGIX_DP_PD 0x12c
+
+#define ANALOGIX_DP_LANE_MAP 0x35C
+
+#define ANALOGIX_DP_ANALOG_CTL_1 0x370
+#define ANALOGIX_DP_ANALOG_CTL_2 0x374
+#define ANALOGIX_DP_ANALOG_CTL_3 0x378
+#define ANALOGIX_DP_PLL_FILTER_CTL_1 0x37C
+#define ANALOGIX_DP_TX_AMP_TUNING_CTL 0x380
+
+#define ANALOGIX_DP_AUX_HW_RETRY_CTL 0x390
+
+#define ANALOGIX_DP_COMMON_INT_STA_1 0x3C4
+#define ANALOGIX_DP_COMMON_INT_STA_2 0x3C8
+#define ANALOGIX_DP_COMMON_INT_STA_3 0x3CC
+#define ANALOGIX_DP_COMMON_INT_STA_4 0x3D0
+#define ANALOGIX_DP_INT_STA 0x3DC
+#define ANALOGIX_DP_COMMON_INT_MASK_1 0x3E0
+#define ANALOGIX_DP_COMMON_INT_MASK_2 0x3E4
+#define ANALOGIX_DP_COMMON_INT_MASK_3 0x3E8
+#define ANALOGIX_DP_COMMON_INT_MASK_4 0x3EC
+#define ANALOGIX_DP_INT_STA_MASK 0x3F8
+#define ANALOGIX_DP_INT_CTL 0x3FC
+
+#define ANALOGIX_DP_SYS_CTL_1 0x600
+#define ANALOGIX_DP_SYS_CTL_2 0x604
+#define ANALOGIX_DP_SYS_CTL_3 0x608
+#define ANALOGIX_DP_SYS_CTL_4 0x60C
+
+#define ANALOGIX_DP_PKT_SEND_CTL 0x640
+#define ANALOGIX_DP_HDCP_CTL 0x648
+
+#define ANALOGIX_DP_LINK_BW_SET 0x680
+#define ANALOGIX_DP_LANE_COUNT_SET 0x684
+#define ANALOGIX_DP_TRAINING_PTN_SET 0x688
+#define ANALOGIX_DP_LN0_LINK_TRAINING_CTL 0x68C
+#define ANALOGIX_DP_LN1_LINK_TRAINING_CTL 0x690
+#define ANALOGIX_DP_LN2_LINK_TRAINING_CTL 0x694
+#define ANALOGIX_DP_LN3_LINK_TRAINING_CTL 0x698
+
+#define ANALOGIX_DP_DEBUG_CTL 0x6C0
+#define ANALOGIX_DP_HPD_DEGLITCH_L 0x6C4
+#define ANALOGIX_DP_HPD_DEGLITCH_H 0x6C8
+#define ANALOGIX_DP_LINK_DEBUG_CTL 0x6E0
+
+#define ANALOGIX_DP_M_VID_0 0x700
+#define ANALOGIX_DP_M_VID_1 0x704
+#define ANALOGIX_DP_M_VID_2 0x708
+#define ANALOGIX_DP_N_VID_0 0x70C
+#define ANALOGIX_DP_N_VID_1 0x710
+#define ANALOGIX_DP_N_VID_2 0x714
+
+#define ANALOGIX_DP_PLL_CTL 0x71C
+#define ANALOGIX_DP_PHY_PD 0x720
+#define ANALOGIX_DP_PHY_TEST 0x724
+
+#define ANALOGIX_DP_VIDEO_FIFO_THRD 0x730
+#define ANALOGIX_DP_AUDIO_MARGIN 0x73C
+
+#define ANALOGIX_DP_M_VID_GEN_FILTER_TH 0x764
+#define ANALOGIX_DP_M_AUD_GEN_FILTER_TH 0x778
+#define ANALOGIX_DP_AUX_CH_STA 0x780
+#define ANALOGIX_DP_AUX_CH_DEFER_CTL 0x788
+#define ANALOGIX_DP_AUX_RX_COMM 0x78C
+#define ANALOGIX_DP_BUFFER_DATA_CTL 0x790
+#define ANALOGIX_DP_AUX_CH_CTL_1 0x794
+#define ANALOGIX_DP_AUX_ADDR_7_0 0x798
+#define ANALOGIX_DP_AUX_ADDR_15_8 0x79C
+#define ANALOGIX_DP_AUX_ADDR_19_16 0x7A0
+#define ANALOGIX_DP_AUX_CH_CTL_2 0x7A4
+
+#define ANALOGIX_DP_BUF_DATA_0 0x7C0
+
+#define ANALOGIX_DP_SOC_GENERAL_CTL 0x800
+
+/* ANALOGIX_DP_TX_SW_RESET */
+#define RESET_DP_TX (0x1 << 0)
+
+/* ANALOGIX_DP_FUNC_EN_1 */
+#define MASTER_VID_FUNC_EN_N (0x1 << 7)
+#define SLAVE_VID_FUNC_EN_N (0x1 << 5)
+#define AUD_FIFO_FUNC_EN_N (0x1 << 4)
+#define AUD_FUNC_EN_N (0x1 << 3)
+#define HDCP_FUNC_EN_N (0x1 << 2)
+#define CRC_FUNC_EN_N (0x1 << 1)
+#define SW_FUNC_EN_N (0x1 << 0)
+
+/* ANALOGIX_DP_FUNC_EN_2 */
+#define SSC_FUNC_EN_N (0x1 << 7)
+#define AUX_FUNC_EN_N (0x1 << 2)
+#define SERDES_FIFO_FUNC_EN_N (0x1 << 1)
+#define LS_CLK_DOMAIN_FUNC_EN_N (0x1 << 0)
+
+/* ANALOGIX_DP_VIDEO_CTL_1 */
+#define VIDEO_EN (0x1 << 7)
+#define HDCP_VIDEO_MUTE (0x1 << 6)
+
+/* ANALOGIX_DP_VIDEO_CTL_1 */
+#define IN_D_RANGE_MASK (0x1 << 7)
+#define IN_D_RANGE_SHIFT (7)
+#define IN_D_RANGE_CEA (0x1 << 7)
+#define IN_D_RANGE_VESA (0x0 << 7)
+#define IN_BPC_MASK (0x7 << 4)
+#define IN_BPC_SHIFT (4)
+#define IN_BPC_12_BITS (0x3 << 4)
+#define IN_BPC_10_BITS (0x2 << 4)
+#define IN_BPC_8_BITS (0x1 << 4)
+#define IN_BPC_6_BITS (0x0 << 4)
+#define IN_COLOR_F_MASK (0x3 << 0)
+#define IN_COLOR_F_SHIFT (0)
+#define IN_COLOR_F_YCBCR444 (0x2 << 0)
+#define IN_COLOR_F_YCBCR422 (0x1 << 0)
+#define IN_COLOR_F_RGB (0x0 << 0)
+
+/* ANALOGIX_DP_VIDEO_CTL_3 */
+#define IN_YC_COEFFI_MASK (0x1 << 7)
+#define IN_YC_COEFFI_SHIFT (7)
+#define IN_YC_COEFFI_ITU709 (0x1 << 7)
+#define IN_YC_COEFFI_ITU601 (0x0 << 7)
+#define VID_CHK_UPDATE_TYPE_MASK (0x1 << 4)
+#define VID_CHK_UPDATE_TYPE_SHIFT (4)
+#define VID_CHK_UPDATE_TYPE_1 (0x1 << 4)
+#define VID_CHK_UPDATE_TYPE_0 (0x0 << 4)
+
+/* ANALOGIX_DP_VIDEO_CTL_8 */
+#define VID_HRES_TH(x) (((x) & 0xf) << 4)
+#define VID_VRES_TH(x) (((x) & 0xf) << 0)
+
+/* ANALOGIX_DP_VIDEO_CTL_10 */
+#define FORMAT_SEL (0x1 << 4)
+#define INTERACE_SCAN_CFG (0x1 << 2)
+#define VSYNC_POLARITY_CFG (0x1 << 1)
+#define HSYNC_POLARITY_CFG (0x1 << 0)
+
+/* ANALOGIX_DP_PLL_REG_1 */
+#define REF_CLK_24M (0x1 << 1)
+#define REF_CLK_27M (0x0 << 1)
+
+/* ANALOGIX_DP_LANE_MAP */
+#define LANE3_MAP_LOGIC_LANE_0 (0x0 << 6)
+#define LANE3_MAP_LOGIC_LANE_1 (0x1 << 6)
+#define LANE3_MAP_LOGIC_LANE_2 (0x2 << 6)
+#define LANE3_MAP_LOGIC_LANE_3 (0x3 << 6)
+#define LANE2_MAP_LOGIC_LANE_0 (0x0 << 4)
+#define LANE2_MAP_LOGIC_LANE_1 (0x1 << 4)
+#define LANE2_MAP_LOGIC_LANE_2 (0x2 << 4)
+#define LANE2_MAP_LOGIC_LANE_3 (0x3 << 4)
+#define LANE1_MAP_LOGIC_LANE_0 (0x0 << 2)
+#define LANE1_MAP_LOGIC_LANE_1 (0x1 << 2)
+#define LANE1_MAP_LOGIC_LANE_2 (0x2 << 2)
+#define LANE1_MAP_LOGIC_LANE_3 (0x3 << 2)
+#define LANE0_MAP_LOGIC_LANE_0 (0x0 << 0)
+#define LANE0_MAP_LOGIC_LANE_1 (0x1 << 0)
+#define LANE0_MAP_LOGIC_LANE_2 (0x2 << 0)
+#define LANE0_MAP_LOGIC_LANE_3 (0x3 << 0)
+
+/* ANALOGIX_DP_ANALOG_CTL_1 */
+#define TX_TERMINAL_CTRL_50_OHM (0x1 << 4)
+
+/* ANALOGIX_DP_ANALOG_CTL_2 */
+#define SEL_24M (0x1 << 3)
+#define TX_DVDD_BIT_1_0625V (0x4 << 0)
+
+/* ANALOGIX_DP_ANALOG_CTL_3 */
+#define DRIVE_DVDD_BIT_1_0625V (0x4 << 5)
+#define VCO_BIT_600_MICRO (0x5 << 0)
+
+/* ANALOGIX_DP_PLL_FILTER_CTL_1 */
+#define PD_RING_OSC (0x1 << 6)
+#define AUX_TERMINAL_CTRL_50_OHM (0x2 << 4)
+#define TX_CUR1_2X (0x1 << 2)
+#define TX_CUR_16_MA (0x3 << 0)
+
+/* ANALOGIX_DP_TX_AMP_TUNING_CTL */
+#define CH3_AMP_400_MV (0x0 << 24)
+#define CH2_AMP_400_MV (0x0 << 16)
+#define CH1_AMP_400_MV (0x0 << 8)
+#define CH0_AMP_400_MV (0x0 << 0)
+
+/* ANALOGIX_DP_AUX_HW_RETRY_CTL */
+#define AUX_BIT_PERIOD_EXPECTED_DELAY(x) (((x) & 0x7) << 8)
+#define AUX_HW_RETRY_INTERVAL_MASK (0x3 << 3)
+#define AUX_HW_RETRY_INTERVAL_600_MICROSECONDS (0x0 << 3)
+#define AUX_HW_RETRY_INTERVAL_800_MICROSECONDS (0x1 << 3)
+#define AUX_HW_RETRY_INTERVAL_1000_MICROSECONDS (0x2 << 3)
+#define AUX_HW_RETRY_INTERVAL_1800_MICROSECONDS (0x3 << 3)
+#define AUX_HW_RETRY_COUNT_SEL(x) (((x) & 0x7) << 0)
+
+/* ANALOGIX_DP_COMMON_INT_STA_1 */
+#define VSYNC_DET (0x1 << 7)
+#define PLL_LOCK_CHG (0x1 << 6)
+#define SPDIF_ERR (0x1 << 5)
+#define SPDIF_UNSTBL (0x1 << 4)
+#define VID_FORMAT_CHG (0x1 << 3)
+#define AUD_CLK_CHG (0x1 << 2)
+#define VID_CLK_CHG (0x1 << 1)
+#define SW_INT (0x1 << 0)
+
+/* ANALOGIX_DP_COMMON_INT_STA_2 */
+#define ENC_EN_CHG (0x1 << 6)
+#define HW_BKSV_RDY (0x1 << 3)
+#define HW_SHA_DONE (0x1 << 2)
+#define HW_AUTH_STATE_CHG (0x1 << 1)
+#define HW_AUTH_DONE (0x1 << 0)
+
+/* ANALOGIX_DP_COMMON_INT_STA_3 */
+#define AFIFO_UNDER (0x1 << 7)
+#define AFIFO_OVER (0x1 << 6)
+#define R0_CHK_FLAG (0x1 << 5)
+
+/* ANALOGIX_DP_COMMON_INT_STA_4 */
+#define PSR_ACTIVE (0x1 << 7)
+#define PSR_INACTIVE (0x1 << 6)
+#define SPDIF_BI_PHASE_ERR (0x1 << 5)
+#define HOTPLUG_CHG (0x1 << 2)
+#define HPD_LOST (0x1 << 1)
+#define PLUG (0x1 << 0)
+
+/* ANALOGIX_DP_INT_STA */
+#define INT_HPD (0x1 << 6)
+#define HW_TRAINING_FINISH (0x1 << 5)
+#define RPLY_RECEIV (0x1 << 1)
+#define AUX_ERR (0x1 << 0)
+
+/* ANALOGIX_DP_INT_CTL */
+#define SOFT_INT_CTRL (0x1 << 2)
+#define INT_POL1 (0x1 << 1)
+#define INT_POL0 (0x1 << 0)
+
+/* ANALOGIX_DP_SYS_CTL_1 */
+#define DET_STA (0x1 << 2)
+#define FORCE_DET (0x1 << 1)
+#define DET_CTRL (0x1 << 0)
+
+/* ANALOGIX_DP_SYS_CTL_2 */
+#define CHA_CRI(x) (((x) & 0xf) << 4)
+#define CHA_STA (0x1 << 2)
+#define FORCE_CHA (0x1 << 1)
+#define CHA_CTRL (0x1 << 0)
+
+/* ANALOGIX_DP_SYS_CTL_3 */
+#define HPD_STATUS (0x1 << 6)
+#define F_HPD (0x1 << 5)
+#define HPD_CTRL (0x1 << 4)
+#define HDCP_RDY (0x1 << 3)
+#define STRM_VALID (0x1 << 2)
+#define F_VALID (0x1 << 1)
+#define VALID_CTRL (0x1 << 0)
+
+/* ANALOGIX_DP_SYS_CTL_4 */
+#define FIX_M_AUD (0x1 << 4)
+#define ENHANCED (0x1 << 3)
+#define FIX_M_VID (0x1 << 2)
+#define M_VID_UPDATE_CTRL (0x3 << 0)
+
+/* ANALOGIX_DP_TRAINING_PTN_SET */
+#define SCRAMBLER_TYPE (0x1 << 9)
+#define HW_LINK_TRAINING_PATTERN (0x1 << 8)
+#define SCRAMBLING_DISABLE (0x1 << 5)
+#define SCRAMBLING_ENABLE (0x0 << 5)
+#define LINK_QUAL_PATTERN_SET_MASK (0x3 << 2)
+#define LINK_QUAL_PATTERN_SET_PRBS7 (0x3 << 2)
+#define LINK_QUAL_PATTERN_SET_D10_2 (0x1 << 2)
+#define LINK_QUAL_PATTERN_SET_DISABLE (0x0 << 2)
+#define SW_TRAINING_PATTERN_SET_MASK (0x3 << 0)
+#define SW_TRAINING_PATTERN_SET_PTN2 (0x2 << 0)
+#define SW_TRAINING_PATTERN_SET_PTN1 (0x1 << 0)
+#define SW_TRAINING_PATTERN_SET_NORMAL (0x0 << 0)
+
+/* ANALOGIX_DP_LN0_LINK_TRAINING_CTL */
+#define PRE_EMPHASIS_SET_MASK (0x3 << 3)
+#define PRE_EMPHASIS_SET_SHIFT (3)
+
+/* ANALOGIX_DP_DEBUG_CTL */
+#define PLL_LOCK (0x1 << 4)
+#define F_PLL_LOCK (0x1 << 3)
+#define PLL_LOCK_CTRL (0x1 << 2)
+#define PN_INV (0x1 << 0)
+
+/* ANALOGIX_DP_PLL_CTL */
+#define DP_PLL_PD (0x1 << 7)
+#define DP_PLL_RESET (0x1 << 6)
+#define DP_PLL_LOOP_BIT_DEFAULT (0x1 << 4)
+#define DP_PLL_REF_BIT_1_1250V (0x5 << 0)
+#define DP_PLL_REF_BIT_1_2500V (0x7 << 0)
+
+/* ANALOGIX_DP_PHY_PD */
+#define DP_PHY_PD (0x1 << 5)
+#define AUX_PD (0x1 << 4)
+#define CH3_PD (0x1 << 3)
+#define CH2_PD (0x1 << 2)
+#define CH1_PD (0x1 << 1)
+#define CH0_PD (0x1 << 0)
+
+/* ANALOGIX_DP_PHY_TEST */
+#define MACRO_RST (0x1 << 5)
+#define CH1_TEST (0x1 << 1)
+#define CH0_TEST (0x1 << 0)
+
+/* ANALOGIX_DP_AUX_CH_STA */
+#define AUX_BUSY (0x1 << 4)
+#define AUX_STATUS_MASK (0xf << 0)
+
+/* ANALOGIX_DP_AUX_CH_DEFER_CTL */
+#define DEFER_CTRL_EN (0x1 << 7)
+#define DEFER_COUNT(x) (((x) & 0x7f) << 0)
+
+/* ANALOGIX_DP_AUX_RX_COMM */
+#define AUX_RX_COMM_I2C_DEFER (0x2 << 2)
+#define AUX_RX_COMM_AUX_DEFER (0x2 << 0)
+
+/* ANALOGIX_DP_BUFFER_DATA_CTL */
+#define BUF_CLR (0x1 << 7)
+#define BUF_DATA_COUNT(x) (((x) & 0x1f) << 0)
+
+/* ANALOGIX_DP_AUX_CH_CTL_1 */
+#define AUX_LENGTH(x) (((x - 1) & 0xf) << 4)
+#define AUX_TX_COMM_MASK (0xf << 0)
+#define AUX_TX_COMM_DP_TRANSACTION (0x1 << 3)
+#define AUX_TX_COMM_I2C_TRANSACTION (0x0 << 3)
+#define AUX_TX_COMM_MOT (0x1 << 2)
+#define AUX_TX_COMM_WRITE (0x0 << 0)
+#define AUX_TX_COMM_READ (0x1 << 0)
+
+/* ANALOGIX_DP_AUX_ADDR_7_0 */
+#define AUX_ADDR_7_0(x) (((x) >> 0) & 0xff)
+
+/* ANALOGIX_DP_AUX_ADDR_15_8 */
+#define AUX_ADDR_15_8(x) (((x) >> 8) & 0xff)
+
+/* ANALOGIX_DP_AUX_ADDR_19_16 */
+#define AUX_ADDR_19_16(x) (((x) >> 16) & 0x0f)
+
+/* ANALOGIX_DP_AUX_CH_CTL_2 */
+#define ADDR_ONLY (0x1 << 1)
+#define AUX_EN (0x1 << 0)
+
+/* ANALOGIX_DP_SOC_GENERAL_CTL */
+#define AUDIO_MODE_SPDIF_MODE (0x1 << 8)
+#define AUDIO_MODE_MASTER_MODE (0x0 << 8)
+#define MASTER_VIDEO_INTERLACE_EN (0x1 << 4)
+#define VIDEO_MASTER_CLK_SEL (0x1 << 2)
+#define VIDEO_MASTER_MODE_EN (0x1 << 1)
+#define VIDEO_MODE_MASK (0x1 << 0)
+#define VIDEO_MODE_SLAVE_MODE (0x1 << 0)
+#define VIDEO_MODE_MASTER_MODE (0x0 << 0)
+
+#endif /* _ANALOGIX_DP_REG_H */
This enables support for Exynos MIPI-DSI device.
config DRM_EXYNOS_DP
- bool "Display Port"
+ bool "EXYNOS specific extensions for Analogix DP driver"
depends on DRM_EXYNOS_FIMD || DRM_EXYNOS7_DECON
+ select DRM_ANALOGIX_DP
default DRM_EXYNOS
select DRM_PANEL
help
exynosdrm-$(CONFIG_DRM_EXYNOS7_DECON) += exynos7_drm_decon.o
exynosdrm-$(CONFIG_DRM_EXYNOS_DPI) += exynos_drm_dpi.o
exynosdrm-$(CONFIG_DRM_EXYNOS_DSI) += exynos_drm_dsi.o
-exynosdrm-$(CONFIG_DRM_EXYNOS_DP) += exynos_dp_core.o exynos_dp_reg.o
+exynosdrm-$(CONFIG_DRM_EXYNOS_DP) += exynos_dp.o
exynosdrm-$(CONFIG_DRM_EXYNOS_MIXER) += exynos_mixer.o
exynosdrm-$(CONFIG_DRM_EXYNOS_HDMI) += exynos_hdmi.o
exynosdrm-$(CONFIG_DRM_EXYNOS_VIDI) += exynos_drm_vidi.o
--- /dev/null
+/*
+ * Samsung SoC DP (Display Port) interface driver.
+ *
+ * Copyright (C) 2012 Samsung Electronics Co., Ltd.
+ * Author: Jingoo Han <jg1.han@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/of_graph.h>
+#include <linux/component.h>
+#include <video/of_display_timing.h>
+#include <video/of_videomode.h>
+#include <video/videomode.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_panel.h>
+
+#include <drm/bridge/analogix_dp.h>
+#include <drm/exynos_drm.h>
+
+#include "exynos_drm_crtc.h"
+
+#define to_dp(nm) container_of(nm, struct exynos_dp_device, nm)
+
+struct exynos_dp_device {
+ struct drm_encoder encoder;
+ struct drm_connector connector;
+ struct drm_bridge *ptn_bridge;
+ struct drm_device *drm_dev;
+ struct device *dev;
+
+ struct videomode vm;
+ struct analogix_dp_plat_data plat_data;
+};
+
+int exynos_dp_crtc_clock_enable(struct analogix_dp_plat_data *plat_data,
+ bool enable)
+{
+ struct exynos_dp_device *dp = to_dp(plat_data);
+ struct drm_encoder *encoder = &dp->encoder;
+ struct exynos_drm_crtc *crtc;
+
+ if (!encoder)
+ return -1;
+
+ crtc = to_exynos_crtc(encoder->crtc);
+ if (crtc && crtc->ops && crtc->ops->clock_enable)
+ crtc->ops->clock_enable(crtc, enable);
+
+ return 0;
+}
+
+static int exynos_dp_poweron(struct analogix_dp_plat_data *plat_data)
+{
+ return exynos_dp_crtc_clock_enable(plat_data, true);
+}
+
+static int exynos_dp_poweroff(struct analogix_dp_plat_data *plat_data)
+{
+ return exynos_dp_crtc_clock_enable(plat_data, false);
+}
+
+static int exynos_dp_get_modes(struct analogix_dp_plat_data *plat_data)
+{
+ struct exynos_dp_device *dp = to_dp(plat_data);
+ struct drm_connector *connector = &dp->connector;
+ struct drm_display_mode *mode;
+ int num_modes = 0;
+
+ if (dp->plat_data.panel)
+ return num_modes;
+
+ mode = drm_mode_create(connector->dev);
+ if (!mode) {
+ DRM_ERROR("failed to create a new display mode.\n");
+ return num_modes;
+ }
+
+ drm_display_mode_from_videomode(&dp->vm, mode);
+ connector->display_info.width_mm = mode->width_mm;
+ connector->display_info.height_mm = mode->height_mm;
+
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+ drm_mode_set_name(mode);
+ drm_mode_probed_add(connector, mode);
+
+ return num_modes + 1;
+}
+
+static int exynos_dp_bridge_attach(struct analogix_dp_plat_data *plat_data,
+ struct drm_bridge *bridge,
+ struct drm_connector *connector)
+{
+ struct exynos_dp_device *dp = to_dp(plat_data);
+ struct drm_encoder *encoder = &dp->encoder;
+ int ret;
+
+ drm_connector_register(connector);
+
+ /* Pre-empt DP connector creation if there's a bridge */
+ if (dp->ptn_bridge) {
+ bridge->next = dp->ptn_bridge;
+ dp->ptn_bridge->encoder = encoder;
+ ret = drm_bridge_attach(encoder->dev, dp->ptn_bridge);
+ if (ret) {
+ DRM_ERROR("Failed to attach bridge to drm\n");
+ bridge->next = NULL;
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static void exynos_dp_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+}
+
+static void exynos_dp_nop(struct drm_encoder *encoder)
+{
+ /* do nothing */
+}
+
+static const struct drm_encoder_helper_funcs exynos_dp_encoder_helper_funcs = {
+ .mode_set = exynos_dp_mode_set,
+ .enable = exynos_dp_nop,
+ .disable = exynos_dp_nop,
+};
+
+static const struct drm_encoder_funcs exynos_dp_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
+static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp)
+{
+ int ret;
+
+ ret = of_get_videomode(dp->dev->of_node, &dp->vm, OF_USE_NATIVE_MODE);
+ if (ret) {
+ DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
+ return ret;
+ }
+ return 0;
+}
+
+static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
+{
+ struct exynos_dp_device *dp = dev_get_drvdata(dev);
+ struct drm_encoder *encoder = &dp->encoder;
+ struct drm_device *drm_dev = data;
+ int pipe, ret;
+
+ /*
+ * Just like the probe function said, we don't need the
+ * device drvrate anymore, we should leave the charge to
+ * analogix dp driver, set the device drvdata to NULL.
+ */
+ dev_set_drvdata(dev, NULL);
+
+ dp->dev = dev;
+ dp->drm_dev = drm_dev;
+
+ dp->plat_data.dev_type = EXYNOS_DP;
+ dp->plat_data.power_on = exynos_dp_poweron;
+ dp->plat_data.power_off = exynos_dp_poweroff;
+ dp->plat_data.attach = exynos_dp_bridge_attach;
+ dp->plat_data.get_modes = exynos_dp_get_modes;
+
+ if (!dp->plat_data.panel && !dp->ptn_bridge) {
+ ret = exynos_dp_dt_parse_panel(dp);
+ if (ret)
+ return ret;
+ }
+
+ pipe = exynos_drm_crtc_get_pipe_from_type(drm_dev,
+ EXYNOS_DISPLAY_TYPE_LCD);
+ if (pipe < 0)
+ return pipe;
+
+ encoder->possible_crtcs = 1 << pipe;
+
+ DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
+
+ drm_encoder_init(drm_dev, encoder, &exynos_dp_encoder_funcs,
+ DRM_MODE_ENCODER_TMDS, NULL);
+
+ drm_encoder_helper_add(encoder, &exynos_dp_encoder_helper_funcs);
+
+ dp->plat_data.encoder = encoder;
+
+ return analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
+}
+
+static void exynos_dp_unbind(struct device *dev, struct device *master,
+ void *data)
+{
+ return analogix_dp_unbind(dev, master, data);
+}
+
+static const struct component_ops exynos_dp_ops = {
+ .bind = exynos_dp_bind,
+ .unbind = exynos_dp_unbind,
+};
+
+static int exynos_dp_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *np = NULL, *endpoint = NULL;
+ struct exynos_dp_device *dp;
+
+ dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
+ GFP_KERNEL);
+ if (!dp)
+ return -ENOMEM;
+
+ /*
+ * We just use the drvdata until driver run into component
+ * add function, and then we would set drvdata to null, so
+ * that analogix dp driver would take charge of the drvdata.
+ */
+ platform_set_drvdata(pdev, dp);
+
+ /* This is for the backward compatibility. */
+ np = of_parse_phandle(dev->of_node, "panel", 0);
+ if (np) {
+ dp->plat_data.panel = of_drm_find_panel(np);
+ of_node_put(np);
+ if (!dp->plat_data.panel)
+ return -EPROBE_DEFER;
+ goto out;
+ }
+
+ endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
+ if (endpoint) {
+ np = of_graph_get_remote_port_parent(endpoint);
+ if (np) {
+ /* The remote port can be either a panel or a bridge */
+ dp->plat_data.panel = of_drm_find_panel(np);
+ if (!dp->plat_data.panel) {
+ dp->ptn_bridge = of_drm_find_bridge(np);
+ if (!dp->ptn_bridge) {
+ of_node_put(np);
+ return -EPROBE_DEFER;
+ }
+ }
+ of_node_put(np);
+ } else {
+ DRM_ERROR("no remote endpoint device node found.\n");
+ return -EINVAL;
+ }
+ } else {
+ DRM_ERROR("no port endpoint subnode found.\n");
+ return -EINVAL;
+ }
+
+out:
+ return component_add(&pdev->dev, &exynos_dp_ops);
+}
+
+static int exynos_dp_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &exynos_dp_ops);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int exynos_dp_suspend(struct device *dev)
+{
+ return analogix_dp_suspend(dev);
+}
+
+static int exynos_dp_resume(struct device *dev)
+{
+ return analogix_dp_resume(dev);
+}
+#endif
+
+static const struct dev_pm_ops exynos_dp_pm_ops = {
+ SET_RUNTIME_PM_OPS(exynos_dp_suspend, exynos_dp_resume, NULL)
+};
+
+static const struct of_device_id exynos_dp_match[] = {
+ { .compatible = "samsung,exynos5-dp" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, exynos_dp_match);
+
+struct platform_driver dp_driver = {
+ .probe = exynos_dp_probe,
+ .remove = exynos_dp_remove,
+ .driver = {
+ .name = "exynos-dp",
+ .owner = THIS_MODULE,
+ .pm = &exynos_dp_pm_ops,
+ .of_match_table = exynos_dp_match,
+ },
+};
+
+MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
+MODULE_DESCRIPTION("Samsung Specific Analogix-DP Driver Extension");
+MODULE_LICENSE("GPL v2");
+++ /dev/null
-/*
- * Samsung SoC DP (Display Port) interface driver.
- *
- * Copyright (C) 2012 Samsung Electronics Co., Ltd.
- * Author: Jingoo Han <jg1.han@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/interrupt.h>
-#include <linux/of.h>
-#include <linux/of_gpio.h>
-#include <linux/of_graph.h>
-#include <linux/gpio.h>
-#include <linux/component.h>
-#include <linux/phy/phy.h>
-#include <video/of_display_timing.h>
-#include <video/of_videomode.h>
-
-#include <drm/drmP.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_crtc_helper.h>
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_panel.h>
-
-#include "exynos_dp_core.h"
-#include "exynos_drm_crtc.h"
-
-#define ctx_from_connector(c) container_of(c, struct exynos_dp_device, \
- connector)
-
-static inline struct exynos_drm_crtc *dp_to_crtc(struct exynos_dp_device *dp)
-{
- return to_exynos_crtc(dp->encoder.crtc);
-}
-
-static inline struct exynos_dp_device *encoder_to_dp(
- struct drm_encoder *e)
-{
- return container_of(e, struct exynos_dp_device, encoder);
-}
-
-struct bridge_init {
- struct i2c_client *client;
- struct device_node *node;
-};
-
-static void exynos_dp_init_dp(struct exynos_dp_device *dp)
-{
- exynos_dp_reset(dp);
-
- exynos_dp_swreset(dp);
-
- exynos_dp_init_analog_param(dp);
- exynos_dp_init_interrupt(dp);
-
- /* SW defined function Normal operation */
- exynos_dp_enable_sw_function(dp);
-
- exynos_dp_config_interrupt(dp);
- exynos_dp_init_analog_func(dp);
-
- exynos_dp_init_hpd(dp);
- exynos_dp_init_aux(dp);
-}
-
-static int exynos_dp_detect_hpd(struct exynos_dp_device *dp)
-{
- int timeout_loop = 0;
-
- while (exynos_dp_get_plug_in_status(dp) != 0) {
- timeout_loop++;
- if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
- dev_err(dp->dev, "failed to get hpd plug status\n");
- return -ETIMEDOUT;
- }
- usleep_range(10, 11);
- }
-
- return 0;
-}
-
-static unsigned char exynos_dp_calc_edid_check_sum(unsigned char *edid_data)
-{
- int i;
- unsigned char sum = 0;
-
- for (i = 0; i < EDID_BLOCK_LENGTH; i++)
- sum = sum + edid_data[i];
-
- return sum;
-}
-
-static int exynos_dp_read_edid(struct exynos_dp_device *dp)
-{
- unsigned char edid[EDID_BLOCK_LENGTH * 2];
- unsigned int extend_block = 0;
- unsigned char sum;
- unsigned char test_vector;
- int retval;
-
- /*
- * EDID device address is 0x50.
- * However, if necessary, you must have set upper address
- * into E-EDID in I2C device, 0x30.
- */
-
- /* Read Extension Flag, Number of 128-byte EDID extension blocks */
- retval = exynos_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
- EDID_EXTENSION_FLAG,
- &extend_block);
- if (retval)
- return retval;
-
- if (extend_block > 0) {
- dev_dbg(dp->dev, "EDID data includes a single extension!\n");
-
- /* Read EDID data */
- retval = exynos_dp_read_bytes_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
- EDID_HEADER_PATTERN,
- EDID_BLOCK_LENGTH,
- &edid[EDID_HEADER_PATTERN]);
- if (retval != 0) {
- dev_err(dp->dev, "EDID Read failed!\n");
- return -EIO;
- }
- sum = exynos_dp_calc_edid_check_sum(edid);
- if (sum != 0) {
- dev_err(dp->dev, "EDID bad checksum!\n");
- return -EIO;
- }
-
- /* Read additional EDID data */
- retval = exynos_dp_read_bytes_from_i2c(dp,
- I2C_EDID_DEVICE_ADDR,
- EDID_BLOCK_LENGTH,
- EDID_BLOCK_LENGTH,
- &edid[EDID_BLOCK_LENGTH]);
- if (retval != 0) {
- dev_err(dp->dev, "EDID Read failed!\n");
- return -EIO;
- }
- sum = exynos_dp_calc_edid_check_sum(&edid[EDID_BLOCK_LENGTH]);
- if (sum != 0) {
- dev_err(dp->dev, "EDID bad checksum!\n");
- return -EIO;
- }
-
- exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
- &test_vector);
- if (test_vector & DP_TEST_LINK_EDID_READ) {
- exynos_dp_write_byte_to_dpcd(dp,
- DP_TEST_EDID_CHECKSUM,
- edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]);
- exynos_dp_write_byte_to_dpcd(dp,
- DP_TEST_RESPONSE,
- DP_TEST_EDID_CHECKSUM_WRITE);
- }
- } else {
- dev_info(dp->dev, "EDID data does not include any extensions.\n");
-
- /* Read EDID data */
- retval = exynos_dp_read_bytes_from_i2c(dp,
- I2C_EDID_DEVICE_ADDR,
- EDID_HEADER_PATTERN,
- EDID_BLOCK_LENGTH,
- &edid[EDID_HEADER_PATTERN]);
- if (retval != 0) {
- dev_err(dp->dev, "EDID Read failed!\n");
- return -EIO;
- }
- sum = exynos_dp_calc_edid_check_sum(edid);
- if (sum != 0) {
- dev_err(dp->dev, "EDID bad checksum!\n");
- return -EIO;
- }
-
- exynos_dp_read_byte_from_dpcd(dp,
- DP_TEST_REQUEST,
- &test_vector);
- if (test_vector & DP_TEST_LINK_EDID_READ) {
- exynos_dp_write_byte_to_dpcd(dp,
- DP_TEST_EDID_CHECKSUM,
- edid[EDID_CHECKSUM]);
- exynos_dp_write_byte_to_dpcd(dp,
- DP_TEST_RESPONSE,
- DP_TEST_EDID_CHECKSUM_WRITE);
- }
- }
-
- dev_dbg(dp->dev, "EDID Read success!\n");
- return 0;
-}
-
-static int exynos_dp_handle_edid(struct exynos_dp_device *dp)
-{
- u8 buf[12];
- int i;
- int retval;
-
- /* Read DPCD DP_DPCD_REV~RECEIVE_PORT1_CAP_1 */
- retval = exynos_dp_read_bytes_from_dpcd(dp, DP_DPCD_REV,
- 12, buf);
- if (retval)
- return retval;
-
- /* Read EDID */
- for (i = 0; i < 3; i++) {
- retval = exynos_dp_read_edid(dp);
- if (!retval)
- break;
- }
-
- return retval;
-}
-
-static void exynos_dp_enable_rx_to_enhanced_mode(struct exynos_dp_device *dp,
- bool enable)
-{
- u8 data;
-
- exynos_dp_read_byte_from_dpcd(dp, DP_LANE_COUNT_SET, &data);
-
- if (enable)
- exynos_dp_write_byte_to_dpcd(dp, DP_LANE_COUNT_SET,
- DP_LANE_COUNT_ENHANCED_FRAME_EN |
- DPCD_LANE_COUNT_SET(data));
- else
- exynos_dp_write_byte_to_dpcd(dp, DP_LANE_COUNT_SET,
- DPCD_LANE_COUNT_SET(data));
-}
-
-static int exynos_dp_is_enhanced_mode_available(struct exynos_dp_device *dp)
-{
- u8 data;
- int retval;
-
- exynos_dp_read_byte_from_dpcd(dp, DP_MAX_LANE_COUNT, &data);
- retval = DPCD_ENHANCED_FRAME_CAP(data);
-
- return retval;
-}
-
-static void exynos_dp_set_enhanced_mode(struct exynos_dp_device *dp)
-{
- u8 data;
-
- data = exynos_dp_is_enhanced_mode_available(dp);
- exynos_dp_enable_rx_to_enhanced_mode(dp, data);
- exynos_dp_enable_enhanced_mode(dp, data);
-}
-
-static void exynos_dp_training_pattern_dis(struct exynos_dp_device *dp)
-{
- exynos_dp_set_training_pattern(dp, DP_NONE);
-
- exynos_dp_write_byte_to_dpcd(dp,
- DP_TRAINING_PATTERN_SET,
- DP_TRAINING_PATTERN_DISABLE);
-}
-
-static void exynos_dp_set_lane_lane_pre_emphasis(struct exynos_dp_device *dp,
- int pre_emphasis, int lane)
-{
- switch (lane) {
- case 0:
- exynos_dp_set_lane0_pre_emphasis(dp, pre_emphasis);
- break;
- case 1:
- exynos_dp_set_lane1_pre_emphasis(dp, pre_emphasis);
- break;
-
- case 2:
- exynos_dp_set_lane2_pre_emphasis(dp, pre_emphasis);
- break;
-
- case 3:
- exynos_dp_set_lane3_pre_emphasis(dp, pre_emphasis);
- break;
- }
-}
-
-static int exynos_dp_link_start(struct exynos_dp_device *dp)
-{
- u8 buf[4];
- int lane, lane_count, pll_tries, retval;
-
- lane_count = dp->link_train.lane_count;
-
- dp->link_train.lt_state = CLOCK_RECOVERY;
- dp->link_train.eq_loop = 0;
-
- for (lane = 0; lane < lane_count; lane++)
- dp->link_train.cr_loop[lane] = 0;
-
- /* Set link rate and count as you want to establish*/
- exynos_dp_set_link_bandwidth(dp, dp->link_train.link_rate);
- exynos_dp_set_lane_count(dp, dp->link_train.lane_count);
-
- /* Setup RX configuration */
- buf[0] = dp->link_train.link_rate;
- buf[1] = dp->link_train.lane_count;
- retval = exynos_dp_write_bytes_to_dpcd(dp, DP_LINK_BW_SET,
- 2, buf);
- if (retval)
- return retval;
-
- /* Set TX pre-emphasis to minimum */
- for (lane = 0; lane < lane_count; lane++)
- exynos_dp_set_lane_lane_pre_emphasis(dp,
- PRE_EMPHASIS_LEVEL_0, lane);
-
- /* Wait for PLL lock */
- pll_tries = 0;
- while (exynos_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
- if (pll_tries == DP_TIMEOUT_LOOP_COUNT) {
- dev_err(dp->dev, "Wait for PLL lock timed out\n");
- return -ETIMEDOUT;
- }
-
- pll_tries++;
- usleep_range(90, 120);
- }
-
- /* Set training pattern 1 */
- exynos_dp_set_training_pattern(dp, TRAINING_PTN1);
-
- /* Set RX training pattern */
- retval = exynos_dp_write_byte_to_dpcd(dp,
- DP_TRAINING_PATTERN_SET,
- DP_LINK_SCRAMBLING_DISABLE | DP_TRAINING_PATTERN_1);
- if (retval)
- return retval;
-
- for (lane = 0; lane < lane_count; lane++)
- buf[lane] = DP_TRAIN_PRE_EMPH_LEVEL_0 |
- DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
-
- retval = exynos_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
- lane_count, buf);
-
- return retval;
-}
-
-static unsigned char exynos_dp_get_lane_status(u8 link_status[2], int lane)
-{
- int shift = (lane & 1) * 4;
- u8 link_value = link_status[lane>>1];
-
- return (link_value >> shift) & 0xf;
-}
-
-static int exynos_dp_clock_recovery_ok(u8 link_status[2], int lane_count)
-{
- int lane;
- u8 lane_status;
-
- for (lane = 0; lane < lane_count; lane++) {
- lane_status = exynos_dp_get_lane_status(link_status, lane);
- if ((lane_status & DP_LANE_CR_DONE) == 0)
- return -EINVAL;
- }
- return 0;
-}
-
-static int exynos_dp_channel_eq_ok(u8 link_status[2], u8 link_align,
- int lane_count)
-{
- int lane;
- u8 lane_status;
-
- if ((link_align & DP_INTERLANE_ALIGN_DONE) == 0)
- return -EINVAL;
-
- for (lane = 0; lane < lane_count; lane++) {
- lane_status = exynos_dp_get_lane_status(link_status, lane);
- lane_status &= DP_CHANNEL_EQ_BITS;
- if (lane_status != DP_CHANNEL_EQ_BITS)
- return -EINVAL;
- }
-
- return 0;
-}
-
-static unsigned char exynos_dp_get_adjust_request_voltage(u8 adjust_request[2],
- int lane)
-{
- int shift = (lane & 1) * 4;
- u8 link_value = adjust_request[lane>>1];
-
- return (link_value >> shift) & 0x3;
-}
-
-static unsigned char exynos_dp_get_adjust_request_pre_emphasis(
- u8 adjust_request[2],
- int lane)
-{
- int shift = (lane & 1) * 4;
- u8 link_value = adjust_request[lane>>1];
-
- return ((link_value >> shift) & 0xc) >> 2;
-}
-
-static void exynos_dp_set_lane_link_training(struct exynos_dp_device *dp,
- u8 training_lane_set, int lane)
-{
- switch (lane) {
- case 0:
- exynos_dp_set_lane0_link_training(dp, training_lane_set);
- break;
- case 1:
- exynos_dp_set_lane1_link_training(dp, training_lane_set);
- break;
-
- case 2:
- exynos_dp_set_lane2_link_training(dp, training_lane_set);
- break;
-
- case 3:
- exynos_dp_set_lane3_link_training(dp, training_lane_set);
- break;
- }
-}
-
-static unsigned int exynos_dp_get_lane_link_training(
- struct exynos_dp_device *dp,
- int lane)
-{
- u32 reg;
-
- switch (lane) {
- case 0:
- reg = exynos_dp_get_lane0_link_training(dp);
- break;
- case 1:
- reg = exynos_dp_get_lane1_link_training(dp);
- break;
- case 2:
- reg = exynos_dp_get_lane2_link_training(dp);
- break;
- case 3:
- reg = exynos_dp_get_lane3_link_training(dp);
- break;
- default:
- WARN_ON(1);
- return 0;
- }
-
- return reg;
-}
-
-static void exynos_dp_reduce_link_rate(struct exynos_dp_device *dp)
-{
- exynos_dp_training_pattern_dis(dp);
- exynos_dp_set_enhanced_mode(dp);
-
- dp->link_train.lt_state = FAILED;
-}
-
-static void exynos_dp_get_adjust_training_lane(struct exynos_dp_device *dp,
- u8 adjust_request[2])
-{
- int lane, lane_count;
- u8 voltage_swing, pre_emphasis, training_lane;
-
- lane_count = dp->link_train.lane_count;
- for (lane = 0; lane < lane_count; lane++) {
- voltage_swing = exynos_dp_get_adjust_request_voltage(
- adjust_request, lane);
- pre_emphasis = exynos_dp_get_adjust_request_pre_emphasis(
- adjust_request, lane);
- training_lane = DPCD_VOLTAGE_SWING_SET(voltage_swing) |
- DPCD_PRE_EMPHASIS_SET(pre_emphasis);
-
- if (voltage_swing == VOLTAGE_LEVEL_3)
- training_lane |= DP_TRAIN_MAX_SWING_REACHED;
- if (pre_emphasis == PRE_EMPHASIS_LEVEL_3)
- training_lane |= DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
-
- dp->link_train.training_lane[lane] = training_lane;
- }
-}
-
-static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
-{
- int lane, lane_count, retval;
- u8 voltage_swing, pre_emphasis, training_lane;
- u8 link_status[2], adjust_request[2];
-
- usleep_range(100, 101);
-
- lane_count = dp->link_train.lane_count;
-
- retval = exynos_dp_read_bytes_from_dpcd(dp,
- DP_LANE0_1_STATUS, 2, link_status);
- if (retval)
- return retval;
-
- retval = exynos_dp_read_bytes_from_dpcd(dp,
- DP_ADJUST_REQUEST_LANE0_1, 2, adjust_request);
- if (retval)
- return retval;
-
- if (exynos_dp_clock_recovery_ok(link_status, lane_count) == 0) {
- /* set training pattern 2 for EQ */
- exynos_dp_set_training_pattern(dp, TRAINING_PTN2);
-
- retval = exynos_dp_write_byte_to_dpcd(dp,
- DP_TRAINING_PATTERN_SET,
- DP_LINK_SCRAMBLING_DISABLE |
- DP_TRAINING_PATTERN_2);
- if (retval)
- return retval;
-
- dev_info(dp->dev, "Link Training Clock Recovery success\n");
- dp->link_train.lt_state = EQUALIZER_TRAINING;
- } else {
- for (lane = 0; lane < lane_count; lane++) {
- training_lane = exynos_dp_get_lane_link_training(
- dp, lane);
- voltage_swing = exynos_dp_get_adjust_request_voltage(
- adjust_request, lane);
- pre_emphasis = exynos_dp_get_adjust_request_pre_emphasis(
- adjust_request, lane);
-
- if (DPCD_VOLTAGE_SWING_GET(training_lane) ==
- voltage_swing &&
- DPCD_PRE_EMPHASIS_GET(training_lane) ==
- pre_emphasis)
- dp->link_train.cr_loop[lane]++;
-
- if (dp->link_train.cr_loop[lane] == MAX_CR_LOOP ||
- voltage_swing == VOLTAGE_LEVEL_3 ||
- pre_emphasis == PRE_EMPHASIS_LEVEL_3) {
- dev_err(dp->dev, "CR Max reached (%d,%d,%d)\n",
- dp->link_train.cr_loop[lane],
- voltage_swing, pre_emphasis);
- exynos_dp_reduce_link_rate(dp);
- return -EIO;
- }
- }
- }
-
- exynos_dp_get_adjust_training_lane(dp, adjust_request);
-
- for (lane = 0; lane < lane_count; lane++)
- exynos_dp_set_lane_link_training(dp,
- dp->link_train.training_lane[lane], lane);
-
- retval = exynos_dp_write_bytes_to_dpcd(dp,
- DP_TRAINING_LANE0_SET, lane_count,
- dp->link_train.training_lane);
- if (retval)
- return retval;
-
- return retval;
-}
-
-static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp)
-{
- int lane, lane_count, retval;
- u32 reg;
- u8 link_align, link_status[2], adjust_request[2];
-
- usleep_range(400, 401);
-
- lane_count = dp->link_train.lane_count;
-
- retval = exynos_dp_read_bytes_from_dpcd(dp,
- DP_LANE0_1_STATUS, 2, link_status);
- if (retval)
- return retval;
-
- if (exynos_dp_clock_recovery_ok(link_status, lane_count)) {
- exynos_dp_reduce_link_rate(dp);
- return -EIO;
- }
-
- retval = exynos_dp_read_bytes_from_dpcd(dp,
- DP_ADJUST_REQUEST_LANE0_1, 2, adjust_request);
- if (retval)
- return retval;
-
- retval = exynos_dp_read_byte_from_dpcd(dp,
- DP_LANE_ALIGN_STATUS_UPDATED, &link_align);
- if (retval)
- return retval;
-
- exynos_dp_get_adjust_training_lane(dp, adjust_request);
-
- if (!exynos_dp_channel_eq_ok(link_status, link_align, lane_count)) {
- /* traing pattern Set to Normal */
- exynos_dp_training_pattern_dis(dp);
-
- dev_info(dp->dev, "Link Training success!\n");
-
- exynos_dp_get_link_bandwidth(dp, ®);
- dp->link_train.link_rate = reg;
- dev_dbg(dp->dev, "final bandwidth = %.2x\n",
- dp->link_train.link_rate);
-
- exynos_dp_get_lane_count(dp, ®);
- dp->link_train.lane_count = reg;
- dev_dbg(dp->dev, "final lane count = %.2x\n",
- dp->link_train.lane_count);
-
- /* set enhanced mode if available */
- exynos_dp_set_enhanced_mode(dp);
- dp->link_train.lt_state = FINISHED;
-
- return 0;
- }
-
- /* not all locked */
- dp->link_train.eq_loop++;
-
- if (dp->link_train.eq_loop > MAX_EQ_LOOP) {
- dev_err(dp->dev, "EQ Max loop\n");
- exynos_dp_reduce_link_rate(dp);
- return -EIO;
- }
-
- for (lane = 0; lane < lane_count; lane++)
- exynos_dp_set_lane_link_training(dp,
- dp->link_train.training_lane[lane], lane);
-
- retval = exynos_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
- lane_count, dp->link_train.training_lane);
-
- return retval;
-}
-
-static void exynos_dp_get_max_rx_bandwidth(struct exynos_dp_device *dp,
- u8 *bandwidth)
-{
- u8 data;
-
- /*
- * For DP rev.1.1, Maximum link rate of Main Link lanes
- * 0x06 = 1.62 Gbps, 0x0a = 2.7 Gbps
- */
- exynos_dp_read_byte_from_dpcd(dp, DP_MAX_LINK_RATE, &data);
- *bandwidth = data;
-}
-
-static void exynos_dp_get_max_rx_lane_count(struct exynos_dp_device *dp,
- u8 *lane_count)
-{
- u8 data;
-
- /*
- * For DP rev.1.1, Maximum number of Main Link lanes
- * 0x01 = 1 lane, 0x02 = 2 lanes, 0x04 = 4 lanes
- */
- exynos_dp_read_byte_from_dpcd(dp, DP_MAX_LANE_COUNT, &data);
- *lane_count = DPCD_MAX_LANE_COUNT(data);
-}
-
-static void exynos_dp_init_training(struct exynos_dp_device *dp,
- enum link_lane_count_type max_lane,
- enum link_rate_type max_rate)
-{
- /*
- * MACRO_RST must be applied after the PLL_LOCK to avoid
- * the DP inter pair skew issue for at least 10 us
- */
- exynos_dp_reset_macro(dp);
-
- /* Initialize by reading RX's DPCD */
- exynos_dp_get_max_rx_bandwidth(dp, &dp->link_train.link_rate);
- exynos_dp_get_max_rx_lane_count(dp, &dp->link_train.lane_count);
-
- if ((dp->link_train.link_rate != LINK_RATE_1_62GBPS) &&
- (dp->link_train.link_rate != LINK_RATE_2_70GBPS)) {
- dev_err(dp->dev, "Rx Max Link Rate is abnormal :%x !\n",
- dp->link_train.link_rate);
- dp->link_train.link_rate = LINK_RATE_1_62GBPS;
- }
-
- if (dp->link_train.lane_count == 0) {
- dev_err(dp->dev, "Rx Max Lane count is abnormal :%x !\n",
- dp->link_train.lane_count);
- dp->link_train.lane_count = (u8)LANE_COUNT1;
- }
-
- /* Setup TX lane count & rate */
- if (dp->link_train.lane_count > max_lane)
- dp->link_train.lane_count = max_lane;
- if (dp->link_train.link_rate > max_rate)
- dp->link_train.link_rate = max_rate;
-
- /* All DP analog module power up */
- exynos_dp_set_analog_power_down(dp, POWER_ALL, 0);
-}
-
-static int exynos_dp_sw_link_training(struct exynos_dp_device *dp)
-{
- int retval = 0, training_finished = 0;
-
- dp->link_train.lt_state = START;
-
- /* Process here */
- while (!retval && !training_finished) {
- switch (dp->link_train.lt_state) {
- case START:
- retval = exynos_dp_link_start(dp);
- if (retval)
- dev_err(dp->dev, "LT link start failed!\n");
- break;
- case CLOCK_RECOVERY:
- retval = exynos_dp_process_clock_recovery(dp);
- if (retval)
- dev_err(dp->dev, "LT CR failed!\n");
- break;
- case EQUALIZER_TRAINING:
- retval = exynos_dp_process_equalizer_training(dp);
- if (retval)
- dev_err(dp->dev, "LT EQ failed!\n");
- break;
- case FINISHED:
- training_finished = 1;
- break;
- case FAILED:
- return -EREMOTEIO;
- }
- }
- if (retval)
- dev_err(dp->dev, "eDP link training failed (%d)\n", retval);
-
- return retval;
-}
-
-static int exynos_dp_set_link_train(struct exynos_dp_device *dp,
- u32 count,
- u32 bwtype)
-{
- int i;
- int retval;
-
- for (i = 0; i < DP_TIMEOUT_LOOP_COUNT; i++) {
- exynos_dp_init_training(dp, count, bwtype);
- retval = exynos_dp_sw_link_training(dp);
- if (retval == 0)
- break;
-
- usleep_range(100, 110);
- }
-
- return retval;
-}
-
-static int exynos_dp_config_video(struct exynos_dp_device *dp)
-{
- int retval = 0;
- int timeout_loop = 0;
- int done_count = 0;
-
- exynos_dp_config_video_slave_mode(dp);
-
- exynos_dp_set_video_color_format(dp);
-
- if (exynos_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
- dev_err(dp->dev, "PLL is not locked yet.\n");
- return -EINVAL;
- }
-
- for (;;) {
- timeout_loop++;
- if (exynos_dp_is_slave_video_stream_clock_on(dp) == 0)
- break;
- if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
- dev_err(dp->dev, "Timeout of video streamclk ok\n");
- return -ETIMEDOUT;
- }
-
- usleep_range(1, 2);
- }
-
- /* Set to use the register calculated M/N video */
- exynos_dp_set_video_cr_mn(dp, CALCULATED_M, 0, 0);
-
- /* For video bist, Video timing must be generated by register */
- exynos_dp_set_video_timing_mode(dp, VIDEO_TIMING_FROM_CAPTURE);
-
- /* Disable video mute */
- exynos_dp_enable_video_mute(dp, 0);
-
- /* Configure video slave mode */
- exynos_dp_enable_video_master(dp, 0);
-
- timeout_loop = 0;
-
- for (;;) {
- timeout_loop++;
- if (exynos_dp_is_video_stream_on(dp) == 0) {
- done_count++;
- if (done_count > 10)
- break;
- } else if (done_count) {
- done_count = 0;
- }
- if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
- dev_err(dp->dev, "Timeout of video streamclk ok\n");
- return -ETIMEDOUT;
- }
-
- usleep_range(1000, 1001);
- }
-
- if (retval != 0)
- dev_err(dp->dev, "Video stream is not detected!\n");
-
- return retval;
-}
-
-static void exynos_dp_enable_scramble(struct exynos_dp_device *dp, bool enable)
-{
- u8 data;
-
- if (enable) {
- exynos_dp_enable_scrambling(dp);
-
- exynos_dp_read_byte_from_dpcd(dp,
- DP_TRAINING_PATTERN_SET,
- &data);
- exynos_dp_write_byte_to_dpcd(dp,
- DP_TRAINING_PATTERN_SET,
- (u8)(data & ~DP_LINK_SCRAMBLING_DISABLE));
- } else {
- exynos_dp_disable_scrambling(dp);
-
- exynos_dp_read_byte_from_dpcd(dp,
- DP_TRAINING_PATTERN_SET,
- &data);
- exynos_dp_write_byte_to_dpcd(dp,
- DP_TRAINING_PATTERN_SET,
- (u8)(data | DP_LINK_SCRAMBLING_DISABLE));
- }
-}
-
-static irqreturn_t exynos_dp_irq_handler(int irq, void *arg)
-{
- struct exynos_dp_device *dp = arg;
-
- enum dp_irq_type irq_type;
-
- irq_type = exynos_dp_get_irq_type(dp);
- switch (irq_type) {
- case DP_IRQ_TYPE_HP_CABLE_IN:
- dev_dbg(dp->dev, "Received irq - cable in\n");
- schedule_work(&dp->hotplug_work);
- exynos_dp_clear_hotplug_interrupts(dp);
- break;
- case DP_IRQ_TYPE_HP_CABLE_OUT:
- dev_dbg(dp->dev, "Received irq - cable out\n");
- exynos_dp_clear_hotplug_interrupts(dp);
- break;
- case DP_IRQ_TYPE_HP_CHANGE:
- /*
- * We get these change notifications once in a while, but there
- * is nothing we can do with them. Just ignore it for now and
- * only handle cable changes.
- */
- dev_dbg(dp->dev, "Received irq - hotplug change; ignoring.\n");
- exynos_dp_clear_hotplug_interrupts(dp);
- break;
- default:
- dev_err(dp->dev, "Received irq - unknown type!\n");
- break;
- }
- return IRQ_HANDLED;
-}
-
-static void exynos_dp_hotplug(struct work_struct *work)
-{
- struct exynos_dp_device *dp;
-
- dp = container_of(work, struct exynos_dp_device, hotplug_work);
-
- if (dp->drm_dev)
- drm_helper_hpd_irq_event(dp->drm_dev);
-}
-
-static void exynos_dp_commit(struct drm_encoder *encoder)
-{
- struct exynos_dp_device *dp = encoder_to_dp(encoder);
- int ret;
-
- /* Keep the panel disabled while we configure video */
- if (dp->panel) {
- if (drm_panel_disable(dp->panel))
- DRM_ERROR("failed to disable the panel\n");
- }
-
- ret = exynos_dp_detect_hpd(dp);
- if (ret) {
- /* Cable has been disconnected, we're done */
- return;
- }
-
- ret = exynos_dp_handle_edid(dp);
- if (ret) {
- dev_err(dp->dev, "unable to handle edid\n");
- return;
- }
-
- ret = exynos_dp_set_link_train(dp, dp->video_info->lane_count,
- dp->video_info->link_rate);
- if (ret) {
- dev_err(dp->dev, "unable to do link train\n");
- return;
- }
-
- exynos_dp_enable_scramble(dp, 1);
- exynos_dp_enable_rx_to_enhanced_mode(dp, 1);
- exynos_dp_enable_enhanced_mode(dp, 1);
-
- exynos_dp_set_lane_count(dp, dp->video_info->lane_count);
- exynos_dp_set_link_bandwidth(dp, dp->video_info->link_rate);
-
- exynos_dp_init_video(dp);
- ret = exynos_dp_config_video(dp);
- if (ret)
- dev_err(dp->dev, "unable to config video\n");
-
- /* Safe to enable the panel now */
- if (dp->panel) {
- if (drm_panel_enable(dp->panel))
- DRM_ERROR("failed to enable the panel\n");
- }
-
- /* Enable video */
- exynos_dp_start_video(dp);
-}
-
-static enum drm_connector_status exynos_dp_detect(
- struct drm_connector *connector, bool force)
-{
- return connector_status_connected;
-}
-
-static void exynos_dp_connector_destroy(struct drm_connector *connector)
-{
- drm_connector_unregister(connector);
- drm_connector_cleanup(connector);
-}
-
-static const struct drm_connector_funcs exynos_dp_connector_funcs = {
- .dpms = drm_atomic_helper_connector_dpms,
- .fill_modes = drm_helper_probe_single_connector_modes,
- .detect = exynos_dp_detect,
- .destroy = exynos_dp_connector_destroy,
- .reset = drm_atomic_helper_connector_reset,
- .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
- .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static int exynos_dp_get_modes(struct drm_connector *connector)
-{
- struct exynos_dp_device *dp = ctx_from_connector(connector);
- struct drm_display_mode *mode;
-
- if (dp->panel)
- return drm_panel_get_modes(dp->panel);
-
- mode = drm_mode_create(connector->dev);
- if (!mode) {
- DRM_ERROR("failed to create a new display mode.\n");
- return 0;
- }
-
- drm_display_mode_from_videomode(&dp->vm, mode);
- connector->display_info.width_mm = mode->width_mm;
- connector->display_info.height_mm = mode->height_mm;
-
- mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
- drm_mode_set_name(mode);
- drm_mode_probed_add(connector, mode);
-
- return 1;
-}
-
-static struct drm_encoder *exynos_dp_best_encoder(
- struct drm_connector *connector)
-{
- struct exynos_dp_device *dp = ctx_from_connector(connector);
-
- return &dp->encoder;
-}
-
-static const struct drm_connector_helper_funcs exynos_dp_connector_helper_funcs = {
- .get_modes = exynos_dp_get_modes,
- .best_encoder = exynos_dp_best_encoder,
-};
-
-/* returns the number of bridges attached */
-static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
- struct drm_encoder *encoder)
-{
- int ret;
-
- encoder->bridge->next = dp->ptn_bridge;
- dp->ptn_bridge->encoder = encoder;
- ret = drm_bridge_attach(encoder->dev, dp->ptn_bridge);
- if (ret) {
- DRM_ERROR("Failed to attach bridge to drm\n");
- return ret;
- }
-
- return 0;
-}
-
-static int exynos_dp_bridge_attach(struct drm_bridge *bridge)
-{
- struct exynos_dp_device *dp = bridge->driver_private;
- struct drm_encoder *encoder = &dp->encoder;
- struct drm_connector *connector = &dp->connector;
- int ret;
-
- /* Pre-empt DP connector creation if there's a bridge */
- if (dp->ptn_bridge) {
- ret = exynos_drm_attach_lcd_bridge(dp, encoder);
- if (!ret)
- return 0;
- }
-
- connector->polled = DRM_CONNECTOR_POLL_HPD;
-
- ret = drm_connector_init(dp->drm_dev, connector,
- &exynos_dp_connector_funcs, DRM_MODE_CONNECTOR_eDP);
- if (ret) {
- DRM_ERROR("Failed to initialize connector with drm\n");
- return ret;
- }
-
- drm_connector_helper_add(connector, &exynos_dp_connector_helper_funcs);
- drm_connector_register(connector);
- drm_mode_connector_attach_encoder(connector, encoder);
-
- if (dp->panel)
- ret = drm_panel_attach(dp->panel, &dp->connector);
-
- return ret;
-}
-
-static void exynos_dp_bridge_enable(struct drm_bridge *bridge)
-{
- struct exynos_dp_device *dp = bridge->driver_private;
- struct exynos_drm_crtc *crtc = dp_to_crtc(dp);
-
- if (dp->dpms_mode == DRM_MODE_DPMS_ON)
- return;
-
- pm_runtime_get_sync(dp->dev);
-
- if (dp->panel) {
- if (drm_panel_prepare(dp->panel)) {
- DRM_ERROR("failed to setup the panel\n");
- return;
- }
- }
-
- if (crtc->ops->clock_enable)
- crtc->ops->clock_enable(dp_to_crtc(dp), true);
-
- phy_power_on(dp->phy);
- exynos_dp_init_dp(dp);
- enable_irq(dp->irq);
- exynos_dp_commit(&dp->encoder);
-
- dp->dpms_mode = DRM_MODE_DPMS_ON;
-}
-
-static void exynos_dp_bridge_disable(struct drm_bridge *bridge)
-{
- struct exynos_dp_device *dp = bridge->driver_private;
- struct exynos_drm_crtc *crtc = dp_to_crtc(dp);
-
- if (dp->dpms_mode != DRM_MODE_DPMS_ON)
- return;
-
- if (dp->panel) {
- if (drm_panel_disable(dp->panel)) {
- DRM_ERROR("failed to disable the panel\n");
- return;
- }
- }
-
- disable_irq(dp->irq);
- flush_work(&dp->hotplug_work);
- phy_power_off(dp->phy);
-
- if (crtc->ops->clock_enable)
- crtc->ops->clock_enable(dp_to_crtc(dp), false);
-
- if (dp->panel) {
- if (drm_panel_unprepare(dp->panel))
- DRM_ERROR("failed to turnoff the panel\n");
- }
-
- pm_runtime_put_sync(dp->dev);
-
- dp->dpms_mode = DRM_MODE_DPMS_OFF;
-}
-
-static void exynos_dp_bridge_nop(struct drm_bridge *bridge)
-{
- /* do nothing */
-}
-
-static const struct drm_bridge_funcs exynos_dp_bridge_funcs = {
- .enable = exynos_dp_bridge_enable,
- .disable = exynos_dp_bridge_disable,
- .pre_enable = exynos_dp_bridge_nop,
- .post_disable = exynos_dp_bridge_nop,
- .attach = exynos_dp_bridge_attach,
-};
-
-static int exynos_dp_create_connector(struct drm_encoder *encoder)
-{
- struct exynos_dp_device *dp = encoder_to_dp(encoder);
- struct drm_device *drm_dev = dp->drm_dev;
- struct drm_bridge *bridge;
- int ret;
-
- bridge = devm_kzalloc(drm_dev->dev, sizeof(*bridge), GFP_KERNEL);
- if (!bridge) {
- DRM_ERROR("failed to allocate for drm bridge\n");
- return -ENOMEM;
- }
-
- dp->bridge = bridge;
-
- encoder->bridge = bridge;
- bridge->driver_private = dp;
- bridge->encoder = encoder;
- bridge->funcs = &exynos_dp_bridge_funcs;
-
- ret = drm_bridge_attach(drm_dev, bridge);
- if (ret) {
- DRM_ERROR("failed to attach drm bridge\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
-static void exynos_dp_mode_set(struct drm_encoder *encoder,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode)
-{
-}
-
-static void exynos_dp_enable(struct drm_encoder *encoder)
-{
-}
-
-static void exynos_dp_disable(struct drm_encoder *encoder)
-{
-}
-
-static const struct drm_encoder_helper_funcs exynos_dp_encoder_helper_funcs = {
- .mode_set = exynos_dp_mode_set,
- .enable = exynos_dp_enable,
- .disable = exynos_dp_disable,
-};
-
-static const struct drm_encoder_funcs exynos_dp_encoder_funcs = {
- .destroy = drm_encoder_cleanup,
-};
-
-static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev)
-{
- struct device_node *dp_node = dev->of_node;
- struct video_info *dp_video_config;
-
- dp_video_config = devm_kzalloc(dev,
- sizeof(*dp_video_config), GFP_KERNEL);
- if (!dp_video_config)
- return ERR_PTR(-ENOMEM);
-
- dp_video_config->h_sync_polarity =
- of_property_read_bool(dp_node, "hsync-active-high");
-
- dp_video_config->v_sync_polarity =
- of_property_read_bool(dp_node, "vsync-active-high");
-
- dp_video_config->interlaced =
- of_property_read_bool(dp_node, "interlaced");
-
- if (of_property_read_u32(dp_node, "samsung,color-space",
- &dp_video_config->color_space)) {
- dev_err(dev, "failed to get color-space\n");
- return ERR_PTR(-EINVAL);
- }
-
- if (of_property_read_u32(dp_node, "samsung,dynamic-range",
- &dp_video_config->dynamic_range)) {
- dev_err(dev, "failed to get dynamic-range\n");
- return ERR_PTR(-EINVAL);
- }
-
- if (of_property_read_u32(dp_node, "samsung,ycbcr-coeff",
- &dp_video_config->ycbcr_coeff)) {
- dev_err(dev, "failed to get ycbcr-coeff\n");
- return ERR_PTR(-EINVAL);
- }
-
- if (of_property_read_u32(dp_node, "samsung,color-depth",
- &dp_video_config->color_depth)) {
- dev_err(dev, "failed to get color-depth\n");
- return ERR_PTR(-EINVAL);
- }
-
- if (of_property_read_u32(dp_node, "samsung,link-rate",
- &dp_video_config->link_rate)) {
- dev_err(dev, "failed to get link-rate\n");
- return ERR_PTR(-EINVAL);
- }
-
- if (of_property_read_u32(dp_node, "samsung,lane-count",
- &dp_video_config->lane_count)) {
- dev_err(dev, "failed to get lane-count\n");
- return ERR_PTR(-EINVAL);
- }
-
- return dp_video_config;
-}
-
-static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp)
-{
- int ret;
-
- ret = of_get_videomode(dp->dev->of_node, &dp->vm, OF_USE_NATIVE_MODE);
- if (ret) {
- DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
- return ret;
- }
- return 0;
-}
-
-static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
-{
- struct exynos_dp_device *dp = dev_get_drvdata(dev);
- struct platform_device *pdev = to_platform_device(dev);
- struct drm_device *drm_dev = data;
- struct drm_encoder *encoder = &dp->encoder;
- struct resource *res;
- unsigned int irq_flags;
- int pipe, ret = 0;
-
- dp->dev = &pdev->dev;
- dp->dpms_mode = DRM_MODE_DPMS_OFF;
-
- dp->video_info = exynos_dp_dt_parse_pdata(&pdev->dev);
- if (IS_ERR(dp->video_info))
- return PTR_ERR(dp->video_info);
-
- dp->phy = devm_phy_get(dp->dev, "dp");
- if (IS_ERR(dp->phy)) {
- dev_err(dp->dev, "no DP phy configured\n");
- ret = PTR_ERR(dp->phy);
- if (ret) {
- /*
- * phy itself is not enabled, so we can move forward
- * assigning NULL to phy pointer.
- */
- if (ret == -ENOSYS || ret == -ENODEV)
- dp->phy = NULL;
- else
- return ret;
- }
- }
-
- if (!dp->panel && !dp->ptn_bridge) {
- ret = exynos_dp_dt_parse_panel(dp);
- if (ret)
- return ret;
- }
-
- dp->clock = devm_clk_get(&pdev->dev, "dp");
- if (IS_ERR(dp->clock)) {
- dev_err(&pdev->dev, "failed to get clock\n");
- return PTR_ERR(dp->clock);
- }
-
- clk_prepare_enable(dp->clock);
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
- dp->reg_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(dp->reg_base))
- return PTR_ERR(dp->reg_base);
-
- dp->hpd_gpio = of_get_named_gpio(dev->of_node, "samsung,hpd-gpio", 0);
-
- if (gpio_is_valid(dp->hpd_gpio)) {
- /*
- * Set up the hotplug GPIO from the device tree as an interrupt.
- * Simply specifying a different interrupt in the device tree
- * doesn't work since we handle hotplug rather differently when
- * using a GPIO. We also need the actual GPIO specifier so
- * that we can get the current state of the GPIO.
- */
- ret = devm_gpio_request_one(&pdev->dev, dp->hpd_gpio, GPIOF_IN,
- "hpd_gpio");
- if (ret) {
- dev_err(&pdev->dev, "failed to get hpd gpio\n");
- return ret;
- }
- dp->irq = gpio_to_irq(dp->hpd_gpio);
- irq_flags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;
- } else {
- dp->hpd_gpio = -ENODEV;
- dp->irq = platform_get_irq(pdev, 0);
- irq_flags = 0;
- }
-
- if (dp->irq == -ENXIO) {
- dev_err(&pdev->dev, "failed to get irq\n");
- return -ENODEV;
- }
-
- INIT_WORK(&dp->hotplug_work, exynos_dp_hotplug);
-
- ret = devm_request_irq(&pdev->dev, dp->irq, exynos_dp_irq_handler,
- irq_flags, "exynos-dp", dp);
- if (ret) {
- dev_err(&pdev->dev, "failed to request irq\n");
- return ret;
- }
- disable_irq(dp->irq);
-
- dp->drm_dev = drm_dev;
-
- pipe = exynos_drm_crtc_get_pipe_from_type(drm_dev,
- EXYNOS_DISPLAY_TYPE_LCD);
- if (pipe < 0)
- return pipe;
-
- encoder->possible_crtcs = 1 << pipe;
-
- DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
-
- drm_encoder_init(drm_dev, encoder, &exynos_dp_encoder_funcs,
- DRM_MODE_ENCODER_TMDS, NULL);
-
- drm_encoder_helper_add(encoder, &exynos_dp_encoder_helper_funcs);
-
- ret = exynos_dp_create_connector(encoder);
- if (ret) {
- DRM_ERROR("failed to create connector ret = %d\n", ret);
- drm_encoder_cleanup(encoder);
- return ret;
- }
-
- return 0;
-}
-
-static void exynos_dp_unbind(struct device *dev, struct device *master,
- void *data)
-{
- struct exynos_dp_device *dp = dev_get_drvdata(dev);
-
- exynos_dp_disable(&dp->encoder);
-}
-
-static const struct component_ops exynos_dp_ops = {
- .bind = exynos_dp_bind,
- .unbind = exynos_dp_unbind,
-};
-
-static int exynos_dp_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct device_node *np = NULL, *endpoint = NULL;
- struct exynos_dp_device *dp;
- int ret;
-
- dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
- GFP_KERNEL);
- if (!dp)
- return -ENOMEM;
-
- platform_set_drvdata(pdev, dp);
-
- /* This is for the backward compatibility. */
- np = of_parse_phandle(dev->of_node, "panel", 0);
- if (np) {
- dp->panel = of_drm_find_panel(np);
- of_node_put(np);
- if (!dp->panel)
- return -EPROBE_DEFER;
- goto out;
- }
-
- endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
- if (endpoint) {
- np = of_graph_get_remote_port_parent(endpoint);
- if (np) {
- /* The remote port can be either a panel or a bridge */
- dp->panel = of_drm_find_panel(np);
- if (!dp->panel) {
- dp->ptn_bridge = of_drm_find_bridge(np);
- if (!dp->ptn_bridge) {
- of_node_put(np);
- return -EPROBE_DEFER;
- }
- }
- of_node_put(np);
- } else {
- DRM_ERROR("no remote endpoint device node found.\n");
- return -EINVAL;
- }
- } else {
- DRM_ERROR("no port endpoint subnode found.\n");
- return -EINVAL;
- }
-
-out:
- pm_runtime_enable(dev);
-
- ret = component_add(&pdev->dev, &exynos_dp_ops);
- if (ret)
- goto err_disable_pm_runtime;
-
- return ret;
-
-err_disable_pm_runtime:
- pm_runtime_disable(dev);
-
- return ret;
-}
-
-static int exynos_dp_remove(struct platform_device *pdev)
-{
- pm_runtime_disable(&pdev->dev);
- component_del(&pdev->dev, &exynos_dp_ops);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int exynos_dp_suspend(struct device *dev)
-{
- struct exynos_dp_device *dp = dev_get_drvdata(dev);
-
- clk_disable_unprepare(dp->clock);
-
- return 0;
-}
-
-static int exynos_dp_resume(struct device *dev)
-{
- struct exynos_dp_device *dp = dev_get_drvdata(dev);
- int ret;
-
- ret = clk_prepare_enable(dp->clock);
- if (ret < 0) {
- DRM_ERROR("Failed to prepare_enable the clock clk [%d]\n", ret);
- return ret;
- }
-
- return 0;
-}
-#endif
-
-static const struct dev_pm_ops exynos_dp_pm_ops = {
- SET_RUNTIME_PM_OPS(exynos_dp_suspend, exynos_dp_resume, NULL)
-};
-
-static const struct of_device_id exynos_dp_match[] = {
- { .compatible = "samsung,exynos5-dp" },
- {},
-};
-MODULE_DEVICE_TABLE(of, exynos_dp_match);
-
-struct platform_driver dp_driver = {
- .probe = exynos_dp_probe,
- .remove = exynos_dp_remove,
- .driver = {
- .name = "exynos-dp",
- .owner = THIS_MODULE,
- .pm = &exynos_dp_pm_ops,
- .of_match_table = exynos_dp_match,
- },
-};
-
-MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
-MODULE_DESCRIPTION("Samsung SoC DP Driver");
-MODULE_LICENSE("GPL v2");
+++ /dev/null
-/*
- * Header file for Samsung DP (Display Port) interface driver.
- *
- * Copyright (C) 2012 Samsung Electronics Co., Ltd.
- * Author: Jingoo Han <jg1.han@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
-
-#ifndef _EXYNOS_DP_CORE_H
-#define _EXYNOS_DP_CORE_H
-
-#include <drm/drm_crtc.h>
-#include <drm/drm_dp_helper.h>
-#include <drm/exynos_drm.h>
-#include <video/videomode.h>
-
-#include "exynos_drm_drv.h"
-
-#define DP_TIMEOUT_LOOP_COUNT 100
-#define MAX_CR_LOOP 5
-#define MAX_EQ_LOOP 5
-
-enum link_rate_type {
- LINK_RATE_1_62GBPS = 0x06,
- LINK_RATE_2_70GBPS = 0x0a
-};
-
-enum link_lane_count_type {
- LANE_COUNT1 = 1,
- LANE_COUNT2 = 2,
- LANE_COUNT4 = 4
-};
-
-enum link_training_state {
- START,
- CLOCK_RECOVERY,
- EQUALIZER_TRAINING,
- FINISHED,
- FAILED
-};
-
-enum voltage_swing_level {
- VOLTAGE_LEVEL_0,
- VOLTAGE_LEVEL_1,
- VOLTAGE_LEVEL_2,
- VOLTAGE_LEVEL_3,
-};
-
-enum pre_emphasis_level {
- PRE_EMPHASIS_LEVEL_0,
- PRE_EMPHASIS_LEVEL_1,
- PRE_EMPHASIS_LEVEL_2,
- PRE_EMPHASIS_LEVEL_3,
-};
-
-enum pattern_set {
- PRBS7,
- D10_2,
- TRAINING_PTN1,
- TRAINING_PTN2,
- DP_NONE
-};
-
-enum color_space {
- COLOR_RGB,
- COLOR_YCBCR422,
- COLOR_YCBCR444
-};
-
-enum color_depth {
- COLOR_6,
- COLOR_8,
- COLOR_10,
- COLOR_12
-};
-
-enum color_coefficient {
- COLOR_YCBCR601,
- COLOR_YCBCR709
-};
-
-enum dynamic_range {
- VESA,
- CEA
-};
-
-enum pll_status {
- PLL_UNLOCKED,
- PLL_LOCKED
-};
-
-enum clock_recovery_m_value_type {
- CALCULATED_M,
- REGISTER_M
-};
-
-enum video_timing_recognition_type {
- VIDEO_TIMING_FROM_CAPTURE,
- VIDEO_TIMING_FROM_REGISTER
-};
-
-enum analog_power_block {
- AUX_BLOCK,
- CH0_BLOCK,
- CH1_BLOCK,
- CH2_BLOCK,
- CH3_BLOCK,
- ANALOG_TOTAL,
- POWER_ALL
-};
-
-enum dp_irq_type {
- DP_IRQ_TYPE_HP_CABLE_IN,
- DP_IRQ_TYPE_HP_CABLE_OUT,
- DP_IRQ_TYPE_HP_CHANGE,
- DP_IRQ_TYPE_UNKNOWN,
-};
-
-struct video_info {
- char *name;
-
- bool h_sync_polarity;
- bool v_sync_polarity;
- bool interlaced;
-
- enum color_space color_space;
- enum dynamic_range dynamic_range;
- enum color_coefficient ycbcr_coeff;
- enum color_depth color_depth;
-
- enum link_rate_type link_rate;
- enum link_lane_count_type lane_count;
-};
-
-struct link_train {
- int eq_loop;
- int cr_loop[4];
-
- u8 link_rate;
- u8 lane_count;
- u8 training_lane[4];
-
- enum link_training_state lt_state;
-};
-
-struct exynos_dp_device {
- struct drm_encoder encoder;
- struct device *dev;
- struct drm_device *drm_dev;
- struct drm_connector connector;
- struct drm_panel *panel;
- struct drm_bridge *bridge;
- struct drm_bridge *ptn_bridge;
- struct clk *clock;
- unsigned int irq;
- void __iomem *reg_base;
-
- struct video_info *video_info;
- struct link_train link_train;
- struct work_struct hotplug_work;
- struct phy *phy;
- int dpms_mode;
- int hpd_gpio;
- struct videomode vm;
-};
-
-/* exynos_dp_reg.c */
-void exynos_dp_enable_video_mute(struct exynos_dp_device *dp, bool enable);
-void exynos_dp_stop_video(struct exynos_dp_device *dp);
-void exynos_dp_lane_swap(struct exynos_dp_device *dp, bool enable);
-void exynos_dp_init_analog_param(struct exynos_dp_device *dp);
-void exynos_dp_init_interrupt(struct exynos_dp_device *dp);
-void exynos_dp_reset(struct exynos_dp_device *dp);
-void exynos_dp_swreset(struct exynos_dp_device *dp);
-void exynos_dp_config_interrupt(struct exynos_dp_device *dp);
-enum pll_status exynos_dp_get_pll_lock_status(struct exynos_dp_device *dp);
-void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable);
-void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp,
- enum analog_power_block block,
- bool enable);
-void exynos_dp_init_analog_func(struct exynos_dp_device *dp);
-void exynos_dp_init_hpd(struct exynos_dp_device *dp);
-enum dp_irq_type exynos_dp_get_irq_type(struct exynos_dp_device *dp);
-void exynos_dp_clear_hotplug_interrupts(struct exynos_dp_device *dp);
-void exynos_dp_reset_aux(struct exynos_dp_device *dp);
-void exynos_dp_init_aux(struct exynos_dp_device *dp);
-int exynos_dp_get_plug_in_status(struct exynos_dp_device *dp);
-void exynos_dp_enable_sw_function(struct exynos_dp_device *dp);
-int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp);
-int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
- unsigned int reg_addr,
- unsigned char data);
-int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
- unsigned int reg_addr,
- unsigned char *data);
-int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
- unsigned int reg_addr,
- unsigned int count,
- unsigned char data[]);
-int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
- unsigned int reg_addr,
- unsigned int count,
- unsigned char data[]);
-int exynos_dp_select_i2c_device(struct exynos_dp_device *dp,
- unsigned int device_addr,
- unsigned int reg_addr);
-int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
- unsigned int device_addr,
- unsigned int reg_addr,
- unsigned int *data);
-int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
- unsigned int device_addr,
- unsigned int reg_addr,
- unsigned int count,
- unsigned char edid[]);
-void exynos_dp_set_link_bandwidth(struct exynos_dp_device *dp, u32 bwtype);
-void exynos_dp_get_link_bandwidth(struct exynos_dp_device *dp, u32 *bwtype);
-void exynos_dp_set_lane_count(struct exynos_dp_device *dp, u32 count);
-void exynos_dp_get_lane_count(struct exynos_dp_device *dp, u32 *count);
-void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable);
-void exynos_dp_set_training_pattern(struct exynos_dp_device *dp,
- enum pattern_set pattern);
-void exynos_dp_set_lane0_pre_emphasis(struct exynos_dp_device *dp, u32 level);
-void exynos_dp_set_lane1_pre_emphasis(struct exynos_dp_device *dp, u32 level);
-void exynos_dp_set_lane2_pre_emphasis(struct exynos_dp_device *dp, u32 level);
-void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level);
-void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
- u32 training_lane);
-void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
- u32 training_lane);
-void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
- u32 training_lane);
-void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp,
- u32 training_lane);
-u32 exynos_dp_get_lane0_link_training(struct exynos_dp_device *dp);
-u32 exynos_dp_get_lane1_link_training(struct exynos_dp_device *dp);
-u32 exynos_dp_get_lane2_link_training(struct exynos_dp_device *dp);
-u32 exynos_dp_get_lane3_link_training(struct exynos_dp_device *dp);
-void exynos_dp_reset_macro(struct exynos_dp_device *dp);
-void exynos_dp_init_video(struct exynos_dp_device *dp);
-
-void exynos_dp_set_video_color_format(struct exynos_dp_device *dp);
-int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp);
-void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp,
- enum clock_recovery_m_value_type type,
- u32 m_value,
- u32 n_value);
-void exynos_dp_set_video_timing_mode(struct exynos_dp_device *dp, u32 type);
-void exynos_dp_enable_video_master(struct exynos_dp_device *dp, bool enable);
-void exynos_dp_start_video(struct exynos_dp_device *dp);
-int exynos_dp_is_video_stream_on(struct exynos_dp_device *dp);
-void exynos_dp_config_video_slave_mode(struct exynos_dp_device *dp);
-void exynos_dp_enable_scrambling(struct exynos_dp_device *dp);
-void exynos_dp_disable_scrambling(struct exynos_dp_device *dp);
-
-/* I2C EDID Chip ID, Slave Address */
-#define I2C_EDID_DEVICE_ADDR 0x50
-#define I2C_E_EDID_DEVICE_ADDR 0x30
-
-#define EDID_BLOCK_LENGTH 0x80
-#define EDID_HEADER_PATTERN 0x00
-#define EDID_EXTENSION_FLAG 0x7e
-#define EDID_CHECKSUM 0x7f
-
-/* DP_MAX_LANE_COUNT */
-#define DPCD_ENHANCED_FRAME_CAP(x) (((x) >> 7) & 0x1)
-#define DPCD_MAX_LANE_COUNT(x) ((x) & 0x1f)
-
-/* DP_LANE_COUNT_SET */
-#define DPCD_LANE_COUNT_SET(x) ((x) & 0x1f)
-
-/* DP_TRAINING_LANE0_SET */
-#define DPCD_PRE_EMPHASIS_SET(x) (((x) & 0x3) << 3)
-#define DPCD_PRE_EMPHASIS_GET(x) (((x) >> 3) & 0x3)
-#define DPCD_VOLTAGE_SWING_SET(x) (((x) & 0x3) << 0)
-#define DPCD_VOLTAGE_SWING_GET(x) (((x) >> 0) & 0x3)
-
-#endif /* _EXYNOS_DP_CORE_H */
+++ /dev/null
-/*
- * Samsung DP (Display port) register interface driver.
- *
- * Copyright (C) 2012 Samsung Electronics Co., Ltd.
- * Author: Jingoo Han <jg1.han@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
-
-#include <linux/device.h>
-#include <linux/io.h>
-#include <linux/delay.h>
-#include <linux/gpio.h>
-
-#include "exynos_dp_core.h"
-#include "exynos_dp_reg.h"
-
-#define COMMON_INT_MASK_1 0
-#define COMMON_INT_MASK_2 0
-#define COMMON_INT_MASK_3 0
-#define COMMON_INT_MASK_4 (HOTPLUG_CHG | HPD_LOST | PLUG)
-#define INT_STA_MASK INT_HPD
-
-void exynos_dp_enable_video_mute(struct exynos_dp_device *dp, bool enable)
-{
- u32 reg;
-
- if (enable) {
- reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
- reg |= HDCP_VIDEO_MUTE;
- writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
- } else {
- reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
- reg &= ~HDCP_VIDEO_MUTE;
- writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
- }
-}
-
-void exynos_dp_stop_video(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
- reg &= ~VIDEO_EN;
- writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
-}
-
-void exynos_dp_lane_swap(struct exynos_dp_device *dp, bool enable)
-{
- u32 reg;
-
- if (enable)
- reg = LANE3_MAP_LOGIC_LANE_0 | LANE2_MAP_LOGIC_LANE_1 |
- LANE1_MAP_LOGIC_LANE_2 | LANE0_MAP_LOGIC_LANE_3;
- else
- reg = LANE3_MAP_LOGIC_LANE_3 | LANE2_MAP_LOGIC_LANE_2 |
- LANE1_MAP_LOGIC_LANE_1 | LANE0_MAP_LOGIC_LANE_0;
-
- writel(reg, dp->reg_base + EXYNOS_DP_LANE_MAP);
-}
-
-void exynos_dp_init_analog_param(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = TX_TERMINAL_CTRL_50_OHM;
- writel(reg, dp->reg_base + EXYNOS_DP_ANALOG_CTL_1);
-
- reg = SEL_24M | TX_DVDD_BIT_1_0625V;
- writel(reg, dp->reg_base + EXYNOS_DP_ANALOG_CTL_2);
-
- reg = DRIVE_DVDD_BIT_1_0625V | VCO_BIT_600_MICRO;
- writel(reg, dp->reg_base + EXYNOS_DP_ANALOG_CTL_3);
-
- reg = PD_RING_OSC | AUX_TERMINAL_CTRL_50_OHM |
- TX_CUR1_2X | TX_CUR_16_MA;
- writel(reg, dp->reg_base + EXYNOS_DP_PLL_FILTER_CTL_1);
-
- reg = CH3_AMP_400_MV | CH2_AMP_400_MV |
- CH1_AMP_400_MV | CH0_AMP_400_MV;
- writel(reg, dp->reg_base + EXYNOS_DP_TX_AMP_TUNING_CTL);
-}
-
-void exynos_dp_init_interrupt(struct exynos_dp_device *dp)
-{
- /* Set interrupt pin assertion polarity as high */
- writel(INT_POL1 | INT_POL0, dp->reg_base + EXYNOS_DP_INT_CTL);
-
- /* Clear pending regisers */
- writel(0xff, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_1);
- writel(0x4f, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_2);
- writel(0xe0, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_3);
- writel(0xe7, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_4);
- writel(0x63, dp->reg_base + EXYNOS_DP_INT_STA);
-
- /* 0:mask,1: unmask */
- writel(0x00, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_1);
- writel(0x00, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_2);
- writel(0x00, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_3);
- writel(0x00, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_4);
- writel(0x00, dp->reg_base + EXYNOS_DP_INT_STA_MASK);
-}
-
-void exynos_dp_reset(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- exynos_dp_stop_video(dp);
- exynos_dp_enable_video_mute(dp, 0);
-
- reg = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N |
- AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N |
- HDCP_FUNC_EN_N | SW_FUNC_EN_N;
- writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_1);
-
- reg = SSC_FUNC_EN_N | AUX_FUNC_EN_N |
- SERDES_FIFO_FUNC_EN_N |
- LS_CLK_DOMAIN_FUNC_EN_N;
- writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_2);
-
- usleep_range(20, 30);
-
- exynos_dp_lane_swap(dp, 0);
-
- writel(0x0, dp->reg_base + EXYNOS_DP_SYS_CTL_1);
- writel(0x40, dp->reg_base + EXYNOS_DP_SYS_CTL_2);
- writel(0x0, dp->reg_base + EXYNOS_DP_SYS_CTL_3);
- writel(0x0, dp->reg_base + EXYNOS_DP_SYS_CTL_4);
-
- writel(0x0, dp->reg_base + EXYNOS_DP_PKT_SEND_CTL);
- writel(0x0, dp->reg_base + EXYNOS_DP_HDCP_CTL);
-
- writel(0x5e, dp->reg_base + EXYNOS_DP_HPD_DEGLITCH_L);
- writel(0x1a, dp->reg_base + EXYNOS_DP_HPD_DEGLITCH_H);
-
- writel(0x10, dp->reg_base + EXYNOS_DP_LINK_DEBUG_CTL);
-
- writel(0x0, dp->reg_base + EXYNOS_DP_PHY_TEST);
-
- writel(0x0, dp->reg_base + EXYNOS_DP_VIDEO_FIFO_THRD);
- writel(0x20, dp->reg_base + EXYNOS_DP_AUDIO_MARGIN);
-
- writel(0x4, dp->reg_base + EXYNOS_DP_M_VID_GEN_FILTER_TH);
- writel(0x2, dp->reg_base + EXYNOS_DP_M_AUD_GEN_FILTER_TH);
-
- writel(0x00000101, dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL);
-}
-
-void exynos_dp_swreset(struct exynos_dp_device *dp)
-{
- writel(RESET_DP_TX, dp->reg_base + EXYNOS_DP_TX_SW_RESET);
-}
-
-void exynos_dp_config_interrupt(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- /* 0: mask, 1: unmask */
- reg = COMMON_INT_MASK_1;
- writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_1);
-
- reg = COMMON_INT_MASK_2;
- writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_2);
-
- reg = COMMON_INT_MASK_3;
- writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_3);
-
- reg = COMMON_INT_MASK_4;
- writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_4);
-
- reg = INT_STA_MASK;
- writel(reg, dp->reg_base + EXYNOS_DP_INT_STA_MASK);
-}
-
-enum pll_status exynos_dp_get_pll_lock_status(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_DEBUG_CTL);
- if (reg & PLL_LOCK)
- return PLL_LOCKED;
- else
- return PLL_UNLOCKED;
-}
-
-void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable)
-{
- u32 reg;
-
- if (enable) {
- reg = readl(dp->reg_base + EXYNOS_DP_PLL_CTL);
- reg |= DP_PLL_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PLL_CTL);
- } else {
- reg = readl(dp->reg_base + EXYNOS_DP_PLL_CTL);
- reg &= ~DP_PLL_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PLL_CTL);
- }
-}
-
-void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp,
- enum analog_power_block block,
- bool enable)
-{
- u32 reg;
-
- switch (block) {
- case AUX_BLOCK:
- if (enable) {
- reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
- reg |= AUX_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
- } else {
- reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
- reg &= ~AUX_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
- }
- break;
- case CH0_BLOCK:
- if (enable) {
- reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
- reg |= CH0_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
- } else {
- reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
- reg &= ~CH0_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
- }
- break;
- case CH1_BLOCK:
- if (enable) {
- reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
- reg |= CH1_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
- } else {
- reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
- reg &= ~CH1_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
- }
- break;
- case CH2_BLOCK:
- if (enable) {
- reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
- reg |= CH2_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
- } else {
- reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
- reg &= ~CH2_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
- }
- break;
- case CH3_BLOCK:
- if (enable) {
- reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
- reg |= CH3_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
- } else {
- reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
- reg &= ~CH3_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
- }
- break;
- case ANALOG_TOTAL:
- if (enable) {
- reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
- reg |= DP_PHY_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
- } else {
- reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
- reg &= ~DP_PHY_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
- }
- break;
- case POWER_ALL:
- if (enable) {
- reg = DP_PHY_PD | AUX_PD | CH3_PD | CH2_PD |
- CH1_PD | CH0_PD;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
- } else {
- writel(0x00, dp->reg_base + EXYNOS_DP_PHY_PD);
- }
- break;
- default:
- break;
- }
-}
-
-void exynos_dp_init_analog_func(struct exynos_dp_device *dp)
-{
- u32 reg;
- int timeout_loop = 0;
-
- exynos_dp_set_analog_power_down(dp, POWER_ALL, 0);
-
- reg = PLL_LOCK_CHG;
- writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_1);
-
- reg = readl(dp->reg_base + EXYNOS_DP_DEBUG_CTL);
- reg &= ~(F_PLL_LOCK | PLL_LOCK_CTRL);
- writel(reg, dp->reg_base + EXYNOS_DP_DEBUG_CTL);
-
- /* Power up PLL */
- if (exynos_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
- exynos_dp_set_pll_power_down(dp, 0);
-
- while (exynos_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
- timeout_loop++;
- if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
- dev_err(dp->dev, "failed to get pll lock status\n");
- return;
- }
- usleep_range(10, 20);
- }
- }
-
- /* Enable Serdes FIFO function and Link symbol clock domain module */
- reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_2);
- reg &= ~(SERDES_FIFO_FUNC_EN_N | LS_CLK_DOMAIN_FUNC_EN_N
- | AUX_FUNC_EN_N);
- writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_2);
-}
-
-void exynos_dp_clear_hotplug_interrupts(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- if (gpio_is_valid(dp->hpd_gpio))
- return;
-
- reg = HOTPLUG_CHG | HPD_LOST | PLUG;
- writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_4);
-
- reg = INT_HPD;
- writel(reg, dp->reg_base + EXYNOS_DP_INT_STA);
-}
-
-void exynos_dp_init_hpd(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- if (gpio_is_valid(dp->hpd_gpio))
- return;
-
- exynos_dp_clear_hotplug_interrupts(dp);
-
- reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_3);
- reg &= ~(F_HPD | HPD_CTRL);
- writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_3);
-}
-
-enum dp_irq_type exynos_dp_get_irq_type(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- if (gpio_is_valid(dp->hpd_gpio)) {
- reg = gpio_get_value(dp->hpd_gpio);
- if (reg)
- return DP_IRQ_TYPE_HP_CABLE_IN;
- else
- return DP_IRQ_TYPE_HP_CABLE_OUT;
- } else {
- /* Parse hotplug interrupt status register */
- reg = readl(dp->reg_base + EXYNOS_DP_COMMON_INT_STA_4);
-
- if (reg & PLUG)
- return DP_IRQ_TYPE_HP_CABLE_IN;
-
- if (reg & HPD_LOST)
- return DP_IRQ_TYPE_HP_CABLE_OUT;
-
- if (reg & HOTPLUG_CHG)
- return DP_IRQ_TYPE_HP_CHANGE;
-
- return DP_IRQ_TYPE_UNKNOWN;
- }
-}
-
-void exynos_dp_reset_aux(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- /* Disable AUX channel module */
- reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_2);
- reg |= AUX_FUNC_EN_N;
- writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_2);
-}
-
-void exynos_dp_init_aux(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- /* Clear inerrupts related to AUX channel */
- reg = RPLY_RECEIV | AUX_ERR;
- writel(reg, dp->reg_base + EXYNOS_DP_INT_STA);
-
- exynos_dp_reset_aux(dp);
-
- /* Disable AUX transaction H/W retry */
- reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(0)|
- AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_HW_RETRY_CTL);
-
- /* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */
- reg = DEFER_CTRL_EN | DEFER_COUNT(1);
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_DEFER_CTL);
-
- /* Enable AUX channel module */
- reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_2);
- reg &= ~AUX_FUNC_EN_N;
- writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_2);
-}
-
-int exynos_dp_get_plug_in_status(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- if (gpio_is_valid(dp->hpd_gpio)) {
- if (gpio_get_value(dp->hpd_gpio))
- return 0;
- } else {
- reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_3);
- if (reg & HPD_STATUS)
- return 0;
- }
-
- return -EINVAL;
-}
-
-void exynos_dp_enable_sw_function(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_1);
- reg &= ~SW_FUNC_EN_N;
- writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_1);
-}
-
-int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp)
-{
- int reg;
- int retval = 0;
- int timeout_loop = 0;
-
- /* Enable AUX CH operation */
- reg = readl(dp->reg_base + EXYNOS_DP_AUX_CH_CTL_2);
- reg |= AUX_EN;
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_2);
-
- /* Is AUX CH command reply received? */
- reg = readl(dp->reg_base + EXYNOS_DP_INT_STA);
- while (!(reg & RPLY_RECEIV)) {
- timeout_loop++;
- if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
- dev_err(dp->dev, "AUX CH command reply failed!\n");
- return -ETIMEDOUT;
- }
- reg = readl(dp->reg_base + EXYNOS_DP_INT_STA);
- usleep_range(10, 11);
- }
-
- /* Clear interrupt source for AUX CH command reply */
- writel(RPLY_RECEIV, dp->reg_base + EXYNOS_DP_INT_STA);
-
- /* Clear interrupt source for AUX CH access error */
- reg = readl(dp->reg_base + EXYNOS_DP_INT_STA);
- if (reg & AUX_ERR) {
- writel(AUX_ERR, dp->reg_base + EXYNOS_DP_INT_STA);
- return -EREMOTEIO;
- }
-
- /* Check AUX CH error access status */
- reg = readl(dp->reg_base + EXYNOS_DP_AUX_CH_STA);
- if ((reg & AUX_STATUS_MASK) != 0) {
- dev_err(dp->dev, "AUX CH error happens: %d\n\n",
- reg & AUX_STATUS_MASK);
- return -EREMOTEIO;
- }
-
- return retval;
-}
-
-int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
- unsigned int reg_addr,
- unsigned char data)
-{
- u32 reg;
- int i;
- int retval;
-
- for (i = 0; i < 3; i++) {
- /* Clear AUX CH data buffer */
- reg = BUF_CLR;
- writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL);
-
- /* Select DPCD device address */
- reg = AUX_ADDR_7_0(reg_addr);
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0);
- reg = AUX_ADDR_15_8(reg_addr);
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8);
- reg = AUX_ADDR_19_16(reg_addr);
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16);
-
- /* Write data buffer */
- reg = (unsigned int)data;
- writel(reg, dp->reg_base + EXYNOS_DP_BUF_DATA_0);
-
- /*
- * Set DisplayPort transaction and write 1 byte
- * If bit 3 is 1, DisplayPort transaction.
- * If Bit 3 is 0, I2C transaction.
- */
- reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE;
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1);
-
- /* Start AUX transaction */
- retval = exynos_dp_start_aux_transaction(dp);
- if (retval == 0)
- break;
- else
- dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
- __func__);
- }
-
- return retval;
-}
-
-int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
- unsigned int reg_addr,
- unsigned char *data)
-{
- u32 reg;
- int i;
- int retval;
-
- for (i = 0; i < 3; i++) {
- /* Clear AUX CH data buffer */
- reg = BUF_CLR;
- writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL);
-
- /* Select DPCD device address */
- reg = AUX_ADDR_7_0(reg_addr);
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0);
- reg = AUX_ADDR_15_8(reg_addr);
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8);
- reg = AUX_ADDR_19_16(reg_addr);
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16);
-
- /*
- * Set DisplayPort transaction and read 1 byte
- * If bit 3 is 1, DisplayPort transaction.
- * If Bit 3 is 0, I2C transaction.
- */
- reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ;
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1);
-
- /* Start AUX transaction */
- retval = exynos_dp_start_aux_transaction(dp);
- if (retval == 0)
- break;
- else
- dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
- __func__);
- }
-
- /* Read data buffer */
- reg = readl(dp->reg_base + EXYNOS_DP_BUF_DATA_0);
- *data = (unsigned char)(reg & 0xff);
-
- return retval;
-}
-
-int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
- unsigned int reg_addr,
- unsigned int count,
- unsigned char data[])
-{
- u32 reg;
- unsigned int start_offset;
- unsigned int cur_data_count;
- unsigned int cur_data_idx;
- int i;
- int retval = 0;
-
- /* Clear AUX CH data buffer */
- reg = BUF_CLR;
- writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL);
-
- start_offset = 0;
- while (start_offset < count) {
- /* Buffer size of AUX CH is 16 * 4bytes */
- if ((count - start_offset) > 16)
- cur_data_count = 16;
- else
- cur_data_count = count - start_offset;
-
- for (i = 0; i < 3; i++) {
- /* Select DPCD device address */
- reg = AUX_ADDR_7_0(reg_addr + start_offset);
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0);
- reg = AUX_ADDR_15_8(reg_addr + start_offset);
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8);
- reg = AUX_ADDR_19_16(reg_addr + start_offset);
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16);
-
- for (cur_data_idx = 0; cur_data_idx < cur_data_count;
- cur_data_idx++) {
- reg = data[start_offset + cur_data_idx];
- writel(reg, dp->reg_base + EXYNOS_DP_BUF_DATA_0
- + 4 * cur_data_idx);
- }
-
- /*
- * Set DisplayPort transaction and write
- * If bit 3 is 1, DisplayPort transaction.
- * If Bit 3 is 0, I2C transaction.
- */
- reg = AUX_LENGTH(cur_data_count) |
- AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE;
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1);
-
- /* Start AUX transaction */
- retval = exynos_dp_start_aux_transaction(dp);
- if (retval == 0)
- break;
- else
- dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
- __func__);
- }
-
- start_offset += cur_data_count;
- }
-
- return retval;
-}
-
-int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
- unsigned int reg_addr,
- unsigned int count,
- unsigned char data[])
-{
- u32 reg;
- unsigned int start_offset;
- unsigned int cur_data_count;
- unsigned int cur_data_idx;
- int i;
- int retval = 0;
-
- /* Clear AUX CH data buffer */
- reg = BUF_CLR;
- writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL);
-
- start_offset = 0;
- while (start_offset < count) {
- /* Buffer size of AUX CH is 16 * 4bytes */
- if ((count - start_offset) > 16)
- cur_data_count = 16;
- else
- cur_data_count = count - start_offset;
-
- /* AUX CH Request Transaction process */
- for (i = 0; i < 3; i++) {
- /* Select DPCD device address */
- reg = AUX_ADDR_7_0(reg_addr + start_offset);
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0);
- reg = AUX_ADDR_15_8(reg_addr + start_offset);
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8);
- reg = AUX_ADDR_19_16(reg_addr + start_offset);
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16);
-
- /*
- * Set DisplayPort transaction and read
- * If bit 3 is 1, DisplayPort transaction.
- * If Bit 3 is 0, I2C transaction.
- */
- reg = AUX_LENGTH(cur_data_count) |
- AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ;
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1);
-
- /* Start AUX transaction */
- retval = exynos_dp_start_aux_transaction(dp);
- if (retval == 0)
- break;
- else
- dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
- __func__);
- }
-
- for (cur_data_idx = 0; cur_data_idx < cur_data_count;
- cur_data_idx++) {
- reg = readl(dp->reg_base + EXYNOS_DP_BUF_DATA_0
- + 4 * cur_data_idx);
- data[start_offset + cur_data_idx] =
- (unsigned char)reg;
- }
-
- start_offset += cur_data_count;
- }
-
- return retval;
-}
-
-int exynos_dp_select_i2c_device(struct exynos_dp_device *dp,
- unsigned int device_addr,
- unsigned int reg_addr)
-{
- u32 reg;
- int retval;
-
- /* Set EDID device address */
- reg = device_addr;
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0);
- writel(0x0, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8);
- writel(0x0, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16);
-
- /* Set offset from base address of EDID device */
- writel(reg_addr, dp->reg_base + EXYNOS_DP_BUF_DATA_0);
-
- /*
- * Set I2C transaction and write address
- * If bit 3 is 1, DisplayPort transaction.
- * If Bit 3 is 0, I2C transaction.
- */
- reg = AUX_TX_COMM_I2C_TRANSACTION | AUX_TX_COMM_MOT |
- AUX_TX_COMM_WRITE;
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1);
-
- /* Start AUX transaction */
- retval = exynos_dp_start_aux_transaction(dp);
- if (retval != 0)
- dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
-
- return retval;
-}
-
-int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
- unsigned int device_addr,
- unsigned int reg_addr,
- unsigned int *data)
-{
- u32 reg;
- int i;
- int retval;
-
- for (i = 0; i < 3; i++) {
- /* Clear AUX CH data buffer */
- reg = BUF_CLR;
- writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL);
-
- /* Select EDID device */
- retval = exynos_dp_select_i2c_device(dp, device_addr, reg_addr);
- if (retval != 0)
- continue;
-
- /*
- * Set I2C transaction and read data
- * If bit 3 is 1, DisplayPort transaction.
- * If Bit 3 is 0, I2C transaction.
- */
- reg = AUX_TX_COMM_I2C_TRANSACTION |
- AUX_TX_COMM_READ;
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1);
-
- /* Start AUX transaction */
- retval = exynos_dp_start_aux_transaction(dp);
- if (retval == 0)
- break;
- else
- dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
- __func__);
- }
-
- /* Read data */
- if (retval == 0)
- *data = readl(dp->reg_base + EXYNOS_DP_BUF_DATA_0);
-
- return retval;
-}
-
-int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
- unsigned int device_addr,
- unsigned int reg_addr,
- unsigned int count,
- unsigned char edid[])
-{
- u32 reg;
- unsigned int i, j;
- unsigned int cur_data_idx;
- unsigned int defer = 0;
- int retval = 0;
-
- for (i = 0; i < count; i += 16) {
- for (j = 0; j < 3; j++) {
- /* Clear AUX CH data buffer */
- reg = BUF_CLR;
- writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL);
-
- /* Set normal AUX CH command */
- reg = readl(dp->reg_base + EXYNOS_DP_AUX_CH_CTL_2);
- reg &= ~ADDR_ONLY;
- writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_2);
-
- /*
- * If Rx sends defer, Tx sends only reads
- * request without sending address
- */
- if (!defer)
- retval = exynos_dp_select_i2c_device(dp,
- device_addr, reg_addr + i);
- else
- defer = 0;
-
- if (retval == 0) {
- /*
- * Set I2C transaction and write data
- * If bit 3 is 1, DisplayPort transaction.
- * If Bit 3 is 0, I2C transaction.
- */
- reg = AUX_LENGTH(16) |
- AUX_TX_COMM_I2C_TRANSACTION |
- AUX_TX_COMM_READ;
- writel(reg, dp->reg_base +
- EXYNOS_DP_AUX_CH_CTL_1);
-
- /* Start AUX transaction */
- retval = exynos_dp_start_aux_transaction(dp);
- if (retval == 0)
- break;
- else
- dev_dbg(dp->dev,
- "%s: Aux Transaction fail!\n",
- __func__);
- }
- /* Check if Rx sends defer */
- reg = readl(dp->reg_base + EXYNOS_DP_AUX_RX_COMM);
- if (reg == AUX_RX_COMM_AUX_DEFER ||
- reg == AUX_RX_COMM_I2C_DEFER) {
- dev_err(dp->dev, "Defer: %d\n\n", reg);
- defer = 1;
- }
- }
-
- for (cur_data_idx = 0; cur_data_idx < 16; cur_data_idx++) {
- reg = readl(dp->reg_base + EXYNOS_DP_BUF_DATA_0
- + 4 * cur_data_idx);
- edid[i + cur_data_idx] = (unsigned char)reg;
- }
- }
-
- return retval;
-}
-
-void exynos_dp_set_link_bandwidth(struct exynos_dp_device *dp, u32 bwtype)
-{
- u32 reg;
-
- reg = bwtype;
- if ((bwtype == LINK_RATE_2_70GBPS) || (bwtype == LINK_RATE_1_62GBPS))
- writel(reg, dp->reg_base + EXYNOS_DP_LINK_BW_SET);
-}
-
-void exynos_dp_get_link_bandwidth(struct exynos_dp_device *dp, u32 *bwtype)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_LINK_BW_SET);
- *bwtype = reg;
-}
-
-void exynos_dp_set_lane_count(struct exynos_dp_device *dp, u32 count)
-{
- u32 reg;
-
- reg = count;
- writel(reg, dp->reg_base + EXYNOS_DP_LANE_COUNT_SET);
-}
-
-void exynos_dp_get_lane_count(struct exynos_dp_device *dp, u32 *count)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_LANE_COUNT_SET);
- *count = reg;
-}
-
-void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable)
-{
- u32 reg;
-
- if (enable) {
- reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_4);
- reg |= ENHANCED;
- writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_4);
- } else {
- reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_4);
- reg &= ~ENHANCED;
- writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_4);
- }
-}
-
-void exynos_dp_set_training_pattern(struct exynos_dp_device *dp,
- enum pattern_set pattern)
-{
- u32 reg;
-
- switch (pattern) {
- case PRBS7:
- reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_PRBS7;
- writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
- break;
- case D10_2:
- reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_D10_2;
- writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
- break;
- case TRAINING_PTN1:
- reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN1;
- writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
- break;
- case TRAINING_PTN2:
- reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN2;
- writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
- break;
- case DP_NONE:
- reg = SCRAMBLING_ENABLE |
- LINK_QUAL_PATTERN_SET_DISABLE |
- SW_TRAINING_PATTERN_SET_NORMAL;
- writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
- break;
- default:
- break;
- }
-}
-
-void exynos_dp_set_lane0_pre_emphasis(struct exynos_dp_device *dp, u32 level)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_LN0_LINK_TRAINING_CTL);
- reg &= ~PRE_EMPHASIS_SET_MASK;
- reg |= level << PRE_EMPHASIS_SET_SHIFT;
- writel(reg, dp->reg_base + EXYNOS_DP_LN0_LINK_TRAINING_CTL);
-}
-
-void exynos_dp_set_lane1_pre_emphasis(struct exynos_dp_device *dp, u32 level)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_LN1_LINK_TRAINING_CTL);
- reg &= ~PRE_EMPHASIS_SET_MASK;
- reg |= level << PRE_EMPHASIS_SET_SHIFT;
- writel(reg, dp->reg_base + EXYNOS_DP_LN1_LINK_TRAINING_CTL);
-}
-
-void exynos_dp_set_lane2_pre_emphasis(struct exynos_dp_device *dp, u32 level)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_LN2_LINK_TRAINING_CTL);
- reg &= ~PRE_EMPHASIS_SET_MASK;
- reg |= level << PRE_EMPHASIS_SET_SHIFT;
- writel(reg, dp->reg_base + EXYNOS_DP_LN2_LINK_TRAINING_CTL);
-}
-
-void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_LN3_LINK_TRAINING_CTL);
- reg &= ~PRE_EMPHASIS_SET_MASK;
- reg |= level << PRE_EMPHASIS_SET_SHIFT;
- writel(reg, dp->reg_base + EXYNOS_DP_LN3_LINK_TRAINING_CTL);
-}
-
-void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
- u32 training_lane)
-{
- u32 reg;
-
- reg = training_lane;
- writel(reg, dp->reg_base + EXYNOS_DP_LN0_LINK_TRAINING_CTL);
-}
-
-void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
- u32 training_lane)
-{
- u32 reg;
-
- reg = training_lane;
- writel(reg, dp->reg_base + EXYNOS_DP_LN1_LINK_TRAINING_CTL);
-}
-
-void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
- u32 training_lane)
-{
- u32 reg;
-
- reg = training_lane;
- writel(reg, dp->reg_base + EXYNOS_DP_LN2_LINK_TRAINING_CTL);
-}
-
-void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp,
- u32 training_lane)
-{
- u32 reg;
-
- reg = training_lane;
- writel(reg, dp->reg_base + EXYNOS_DP_LN3_LINK_TRAINING_CTL);
-}
-
-u32 exynos_dp_get_lane0_link_training(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_LN0_LINK_TRAINING_CTL);
- return reg;
-}
-
-u32 exynos_dp_get_lane1_link_training(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_LN1_LINK_TRAINING_CTL);
- return reg;
-}
-
-u32 exynos_dp_get_lane2_link_training(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_LN2_LINK_TRAINING_CTL);
- return reg;
-}
-
-u32 exynos_dp_get_lane3_link_training(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_LN3_LINK_TRAINING_CTL);
- return reg;
-}
-
-void exynos_dp_reset_macro(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_PHY_TEST);
- reg |= MACRO_RST;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_TEST);
-
- /* 10 us is the minimum reset time. */
- usleep_range(10, 20);
-
- reg &= ~MACRO_RST;
- writel(reg, dp->reg_base + EXYNOS_DP_PHY_TEST);
-}
-
-void exynos_dp_init_video(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = VSYNC_DET | VID_FORMAT_CHG | VID_CLK_CHG;
- writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_1);
-
- reg = 0x0;
- writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_1);
-
- reg = CHA_CRI(4) | CHA_CTRL;
- writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_2);
-
- reg = 0x0;
- writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_3);
-
- reg = VID_HRES_TH(2) | VID_VRES_TH(0);
- writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_8);
-}
-
-void exynos_dp_set_video_color_format(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- /* Configure the input color depth, color space, dynamic range */
- reg = (dp->video_info->dynamic_range << IN_D_RANGE_SHIFT) |
- (dp->video_info->color_depth << IN_BPC_SHIFT) |
- (dp->video_info->color_space << IN_COLOR_F_SHIFT);
- writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_2);
-
- /* Set Input Color YCbCr Coefficients to ITU601 or ITU709 */
- reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_3);
- reg &= ~IN_YC_COEFFI_MASK;
- if (dp->video_info->ycbcr_coeff)
- reg |= IN_YC_COEFFI_ITU709;
- else
- reg |= IN_YC_COEFFI_ITU601;
- writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_3);
-}
-
-int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_1);
- writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_1);
-
- reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_1);
-
- if (!(reg & DET_STA)) {
- dev_dbg(dp->dev, "Input stream clock not detected.\n");
- return -EINVAL;
- }
-
- reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_2);
- writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_2);
-
- reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_2);
- dev_dbg(dp->dev, "wait SYS_CTL_2.\n");
-
- if (reg & CHA_STA) {
- dev_dbg(dp->dev, "Input stream clk is changing\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
-void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp,
- enum clock_recovery_m_value_type type,
- u32 m_value,
- u32 n_value)
-{
- u32 reg;
-
- if (type == REGISTER_M) {
- reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_4);
- reg |= FIX_M_VID;
- writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_4);
- reg = m_value & 0xff;
- writel(reg, dp->reg_base + EXYNOS_DP_M_VID_0);
- reg = (m_value >> 8) & 0xff;
- writel(reg, dp->reg_base + EXYNOS_DP_M_VID_1);
- reg = (m_value >> 16) & 0xff;
- writel(reg, dp->reg_base + EXYNOS_DP_M_VID_2);
-
- reg = n_value & 0xff;
- writel(reg, dp->reg_base + EXYNOS_DP_N_VID_0);
- reg = (n_value >> 8) & 0xff;
- writel(reg, dp->reg_base + EXYNOS_DP_N_VID_1);
- reg = (n_value >> 16) & 0xff;
- writel(reg, dp->reg_base + EXYNOS_DP_N_VID_2);
- } else {
- reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_4);
- reg &= ~FIX_M_VID;
- writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_4);
-
- writel(0x00, dp->reg_base + EXYNOS_DP_N_VID_0);
- writel(0x80, dp->reg_base + EXYNOS_DP_N_VID_1);
- writel(0x00, dp->reg_base + EXYNOS_DP_N_VID_2);
- }
-}
-
-void exynos_dp_set_video_timing_mode(struct exynos_dp_device *dp, u32 type)
-{
- u32 reg;
-
- if (type == VIDEO_TIMING_FROM_CAPTURE) {
- reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
- reg &= ~FORMAT_SEL;
- writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
- } else {
- reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
- reg |= FORMAT_SEL;
- writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
- }
-}
-
-void exynos_dp_enable_video_master(struct exynos_dp_device *dp, bool enable)
-{
- u32 reg;
-
- if (enable) {
- reg = readl(dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL);
- reg &= ~VIDEO_MODE_MASK;
- reg |= VIDEO_MASTER_MODE_EN | VIDEO_MODE_MASTER_MODE;
- writel(reg, dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL);
- } else {
- reg = readl(dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL);
- reg &= ~VIDEO_MODE_MASK;
- reg |= VIDEO_MODE_SLAVE_MODE;
- writel(reg, dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL);
- }
-}
-
-void exynos_dp_start_video(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
- reg |= VIDEO_EN;
- writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
-}
-
-int exynos_dp_is_video_stream_on(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_3);
- writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_3);
-
- reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_3);
- if (!(reg & STRM_VALID)) {
- dev_dbg(dp->dev, "Input video stream is not detected.\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
-void exynos_dp_config_video_slave_mode(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_1);
- reg &= ~(MASTER_VID_FUNC_EN_N|SLAVE_VID_FUNC_EN_N);
- reg |= MASTER_VID_FUNC_EN_N;
- writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_1);
-
- reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
- reg &= ~INTERACE_SCAN_CFG;
- reg |= (dp->video_info->interlaced << 2);
- writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
-
- reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
- reg &= ~VSYNC_POLARITY_CFG;
- reg |= (dp->video_info->v_sync_polarity << 1);
- writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
-
- reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
- reg &= ~HSYNC_POLARITY_CFG;
- reg |= (dp->video_info->h_sync_polarity << 0);
- writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
-
- reg = AUDIO_MODE_SPDIF_MODE | VIDEO_MODE_SLAVE_MODE;
- writel(reg, dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL);
-}
-
-void exynos_dp_enable_scrambling(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
- reg &= ~SCRAMBLING_DISABLE;
- writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
-}
-
-void exynos_dp_disable_scrambling(struct exynos_dp_device *dp)
-{
- u32 reg;
-
- reg = readl(dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
- reg |= SCRAMBLING_DISABLE;
- writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
-}
+++ /dev/null
-/*
- * Register definition file for Samsung DP driver
- *
- * Copyright (C) 2012 Samsung Electronics Co., Ltd.
- * Author: Jingoo Han <jg1.han@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef _EXYNOS_DP_REG_H
-#define _EXYNOS_DP_REG_H
-
-#define EXYNOS_DP_TX_SW_RESET 0x14
-#define EXYNOS_DP_FUNC_EN_1 0x18
-#define EXYNOS_DP_FUNC_EN_2 0x1C
-#define EXYNOS_DP_VIDEO_CTL_1 0x20
-#define EXYNOS_DP_VIDEO_CTL_2 0x24
-#define EXYNOS_DP_VIDEO_CTL_3 0x28
-
-#define EXYNOS_DP_VIDEO_CTL_8 0x3C
-#define EXYNOS_DP_VIDEO_CTL_10 0x44
-
-#define EXYNOS_DP_LANE_MAP 0x35C
-
-#define EXYNOS_DP_ANALOG_CTL_1 0x370
-#define EXYNOS_DP_ANALOG_CTL_2 0x374
-#define EXYNOS_DP_ANALOG_CTL_3 0x378
-#define EXYNOS_DP_PLL_FILTER_CTL_1 0x37C
-#define EXYNOS_DP_TX_AMP_TUNING_CTL 0x380
-
-#define EXYNOS_DP_AUX_HW_RETRY_CTL 0x390
-
-#define EXYNOS_DP_COMMON_INT_STA_1 0x3C4
-#define EXYNOS_DP_COMMON_INT_STA_2 0x3C8
-#define EXYNOS_DP_COMMON_INT_STA_3 0x3CC
-#define EXYNOS_DP_COMMON_INT_STA_4 0x3D0
-#define EXYNOS_DP_INT_STA 0x3DC
-#define EXYNOS_DP_COMMON_INT_MASK_1 0x3E0
-#define EXYNOS_DP_COMMON_INT_MASK_2 0x3E4
-#define EXYNOS_DP_COMMON_INT_MASK_3 0x3E8
-#define EXYNOS_DP_COMMON_INT_MASK_4 0x3EC
-#define EXYNOS_DP_INT_STA_MASK 0x3F8
-#define EXYNOS_DP_INT_CTL 0x3FC
-
-#define EXYNOS_DP_SYS_CTL_1 0x600
-#define EXYNOS_DP_SYS_CTL_2 0x604
-#define EXYNOS_DP_SYS_CTL_3 0x608
-#define EXYNOS_DP_SYS_CTL_4 0x60C
-
-#define EXYNOS_DP_PKT_SEND_CTL 0x640
-#define EXYNOS_DP_HDCP_CTL 0x648
-
-#define EXYNOS_DP_LINK_BW_SET 0x680
-#define EXYNOS_DP_LANE_COUNT_SET 0x684
-#define EXYNOS_DP_TRAINING_PTN_SET 0x688
-#define EXYNOS_DP_LN0_LINK_TRAINING_CTL 0x68C
-#define EXYNOS_DP_LN1_LINK_TRAINING_CTL 0x690
-#define EXYNOS_DP_LN2_LINK_TRAINING_CTL 0x694
-#define EXYNOS_DP_LN3_LINK_TRAINING_CTL 0x698
-
-#define EXYNOS_DP_DEBUG_CTL 0x6C0
-#define EXYNOS_DP_HPD_DEGLITCH_L 0x6C4
-#define EXYNOS_DP_HPD_DEGLITCH_H 0x6C8
-#define EXYNOS_DP_LINK_DEBUG_CTL 0x6E0
-
-#define EXYNOS_DP_M_VID_0 0x700
-#define EXYNOS_DP_M_VID_1 0x704
-#define EXYNOS_DP_M_VID_2 0x708
-#define EXYNOS_DP_N_VID_0 0x70C
-#define EXYNOS_DP_N_VID_1 0x710
-#define EXYNOS_DP_N_VID_2 0x714
-
-#define EXYNOS_DP_PLL_CTL 0x71C
-#define EXYNOS_DP_PHY_PD 0x720
-#define EXYNOS_DP_PHY_TEST 0x724
-
-#define EXYNOS_DP_VIDEO_FIFO_THRD 0x730
-#define EXYNOS_DP_AUDIO_MARGIN 0x73C
-
-#define EXYNOS_DP_M_VID_GEN_FILTER_TH 0x764
-#define EXYNOS_DP_M_AUD_GEN_FILTER_TH 0x778
-#define EXYNOS_DP_AUX_CH_STA 0x780
-#define EXYNOS_DP_AUX_CH_DEFER_CTL 0x788
-#define EXYNOS_DP_AUX_RX_COMM 0x78C
-#define EXYNOS_DP_BUFFER_DATA_CTL 0x790
-#define EXYNOS_DP_AUX_CH_CTL_1 0x794
-#define EXYNOS_DP_AUX_ADDR_7_0 0x798
-#define EXYNOS_DP_AUX_ADDR_15_8 0x79C
-#define EXYNOS_DP_AUX_ADDR_19_16 0x7A0
-#define EXYNOS_DP_AUX_CH_CTL_2 0x7A4
-
-#define EXYNOS_DP_BUF_DATA_0 0x7C0
-
-#define EXYNOS_DP_SOC_GENERAL_CTL 0x800
-
-/* EXYNOS_DP_TX_SW_RESET */
-#define RESET_DP_TX (0x1 << 0)
-
-/* EXYNOS_DP_FUNC_EN_1 */
-#define MASTER_VID_FUNC_EN_N (0x1 << 7)
-#define SLAVE_VID_FUNC_EN_N (0x1 << 5)
-#define AUD_FIFO_FUNC_EN_N (0x1 << 4)
-#define AUD_FUNC_EN_N (0x1 << 3)
-#define HDCP_FUNC_EN_N (0x1 << 2)
-#define CRC_FUNC_EN_N (0x1 << 1)
-#define SW_FUNC_EN_N (0x1 << 0)
-
-/* EXYNOS_DP_FUNC_EN_2 */
-#define SSC_FUNC_EN_N (0x1 << 7)
-#define AUX_FUNC_EN_N (0x1 << 2)
-#define SERDES_FIFO_FUNC_EN_N (0x1 << 1)
-#define LS_CLK_DOMAIN_FUNC_EN_N (0x1 << 0)
-
-/* EXYNOS_DP_VIDEO_CTL_1 */
-#define VIDEO_EN (0x1 << 7)
-#define HDCP_VIDEO_MUTE (0x1 << 6)
-
-/* EXYNOS_DP_VIDEO_CTL_1 */
-#define IN_D_RANGE_MASK (0x1 << 7)
-#define IN_D_RANGE_SHIFT (7)
-#define IN_D_RANGE_CEA (0x1 << 7)
-#define IN_D_RANGE_VESA (0x0 << 7)
-#define IN_BPC_MASK (0x7 << 4)
-#define IN_BPC_SHIFT (4)
-#define IN_BPC_12_BITS (0x3 << 4)
-#define IN_BPC_10_BITS (0x2 << 4)
-#define IN_BPC_8_BITS (0x1 << 4)
-#define IN_BPC_6_BITS (0x0 << 4)
-#define IN_COLOR_F_MASK (0x3 << 0)
-#define IN_COLOR_F_SHIFT (0)
-#define IN_COLOR_F_YCBCR444 (0x2 << 0)
-#define IN_COLOR_F_YCBCR422 (0x1 << 0)
-#define IN_COLOR_F_RGB (0x0 << 0)
-
-/* EXYNOS_DP_VIDEO_CTL_3 */
-#define IN_YC_COEFFI_MASK (0x1 << 7)
-#define IN_YC_COEFFI_SHIFT (7)
-#define IN_YC_COEFFI_ITU709 (0x1 << 7)
-#define IN_YC_COEFFI_ITU601 (0x0 << 7)
-#define VID_CHK_UPDATE_TYPE_MASK (0x1 << 4)
-#define VID_CHK_UPDATE_TYPE_SHIFT (4)
-#define VID_CHK_UPDATE_TYPE_1 (0x1 << 4)
-#define VID_CHK_UPDATE_TYPE_0 (0x0 << 4)
-
-/* EXYNOS_DP_VIDEO_CTL_8 */
-#define VID_HRES_TH(x) (((x) & 0xf) << 4)
-#define VID_VRES_TH(x) (((x) & 0xf) << 0)
-
-/* EXYNOS_DP_VIDEO_CTL_10 */
-#define FORMAT_SEL (0x1 << 4)
-#define INTERACE_SCAN_CFG (0x1 << 2)
-#define VSYNC_POLARITY_CFG (0x1 << 1)
-#define HSYNC_POLARITY_CFG (0x1 << 0)
-
-/* EXYNOS_DP_LANE_MAP */
-#define LANE3_MAP_LOGIC_LANE_0 (0x0 << 6)
-#define LANE3_MAP_LOGIC_LANE_1 (0x1 << 6)
-#define LANE3_MAP_LOGIC_LANE_2 (0x2 << 6)
-#define LANE3_MAP_LOGIC_LANE_3 (0x3 << 6)
-#define LANE2_MAP_LOGIC_LANE_0 (0x0 << 4)
-#define LANE2_MAP_LOGIC_LANE_1 (0x1 << 4)
-#define LANE2_MAP_LOGIC_LANE_2 (0x2 << 4)
-#define LANE2_MAP_LOGIC_LANE_3 (0x3 << 4)
-#define LANE1_MAP_LOGIC_LANE_0 (0x0 << 2)
-#define LANE1_MAP_LOGIC_LANE_1 (0x1 << 2)
-#define LANE1_MAP_LOGIC_LANE_2 (0x2 << 2)
-#define LANE1_MAP_LOGIC_LANE_3 (0x3 << 2)
-#define LANE0_MAP_LOGIC_LANE_0 (0x0 << 0)
-#define LANE0_MAP_LOGIC_LANE_1 (0x1 << 0)
-#define LANE0_MAP_LOGIC_LANE_2 (0x2 << 0)
-#define LANE0_MAP_LOGIC_LANE_3 (0x3 << 0)
-
-/* EXYNOS_DP_ANALOG_CTL_1 */
-#define TX_TERMINAL_CTRL_50_OHM (0x1 << 4)
-
-/* EXYNOS_DP_ANALOG_CTL_2 */
-#define SEL_24M (0x1 << 3)
-#define TX_DVDD_BIT_1_0625V (0x4 << 0)
-
-/* EXYNOS_DP_ANALOG_CTL_3 */
-#define DRIVE_DVDD_BIT_1_0625V (0x4 << 5)
-#define VCO_BIT_600_MICRO (0x5 << 0)
-
-/* EXYNOS_DP_PLL_FILTER_CTL_1 */
-#define PD_RING_OSC (0x1 << 6)
-#define AUX_TERMINAL_CTRL_50_OHM (0x2 << 4)
-#define TX_CUR1_2X (0x1 << 2)
-#define TX_CUR_16_MA (0x3 << 0)
-
-/* EXYNOS_DP_TX_AMP_TUNING_CTL */
-#define CH3_AMP_400_MV (0x0 << 24)
-#define CH2_AMP_400_MV (0x0 << 16)
-#define CH1_AMP_400_MV (0x0 << 8)
-#define CH0_AMP_400_MV (0x0 << 0)
-
-/* EXYNOS_DP_AUX_HW_RETRY_CTL */
-#define AUX_BIT_PERIOD_EXPECTED_DELAY(x) (((x) & 0x7) << 8)
-#define AUX_HW_RETRY_INTERVAL_MASK (0x3 << 3)
-#define AUX_HW_RETRY_INTERVAL_600_MICROSECONDS (0x0 << 3)
-#define AUX_HW_RETRY_INTERVAL_800_MICROSECONDS (0x1 << 3)
-#define AUX_HW_RETRY_INTERVAL_1000_MICROSECONDS (0x2 << 3)
-#define AUX_HW_RETRY_INTERVAL_1800_MICROSECONDS (0x3 << 3)
-#define AUX_HW_RETRY_COUNT_SEL(x) (((x) & 0x7) << 0)
-
-/* EXYNOS_DP_COMMON_INT_STA_1 */
-#define VSYNC_DET (0x1 << 7)
-#define PLL_LOCK_CHG (0x1 << 6)
-#define SPDIF_ERR (0x1 << 5)
-#define SPDIF_UNSTBL (0x1 << 4)
-#define VID_FORMAT_CHG (0x1 << 3)
-#define AUD_CLK_CHG (0x1 << 2)
-#define VID_CLK_CHG (0x1 << 1)
-#define SW_INT (0x1 << 0)
-
-/* EXYNOS_DP_COMMON_INT_STA_2 */
-#define ENC_EN_CHG (0x1 << 6)
-#define HW_BKSV_RDY (0x1 << 3)
-#define HW_SHA_DONE (0x1 << 2)
-#define HW_AUTH_STATE_CHG (0x1 << 1)
-#define HW_AUTH_DONE (0x1 << 0)
-
-/* EXYNOS_DP_COMMON_INT_STA_3 */
-#define AFIFO_UNDER (0x1 << 7)
-#define AFIFO_OVER (0x1 << 6)
-#define R0_CHK_FLAG (0x1 << 5)
-
-/* EXYNOS_DP_COMMON_INT_STA_4 */
-#define PSR_ACTIVE (0x1 << 7)
-#define PSR_INACTIVE (0x1 << 6)
-#define SPDIF_BI_PHASE_ERR (0x1 << 5)
-#define HOTPLUG_CHG (0x1 << 2)
-#define HPD_LOST (0x1 << 1)
-#define PLUG (0x1 << 0)
-
-/* EXYNOS_DP_INT_STA */
-#define INT_HPD (0x1 << 6)
-#define HW_TRAINING_FINISH (0x1 << 5)
-#define RPLY_RECEIV (0x1 << 1)
-#define AUX_ERR (0x1 << 0)
-
-/* EXYNOS_DP_INT_CTL */
-#define SOFT_INT_CTRL (0x1 << 2)
-#define INT_POL1 (0x1 << 1)
-#define INT_POL0 (0x1 << 0)
-
-/* EXYNOS_DP_SYS_CTL_1 */
-#define DET_STA (0x1 << 2)
-#define FORCE_DET (0x1 << 1)
-#define DET_CTRL (0x1 << 0)
-
-/* EXYNOS_DP_SYS_CTL_2 */
-#define CHA_CRI(x) (((x) & 0xf) << 4)
-#define CHA_STA (0x1 << 2)
-#define FORCE_CHA (0x1 << 1)
-#define CHA_CTRL (0x1 << 0)
-
-/* EXYNOS_DP_SYS_CTL_3 */
-#define HPD_STATUS (0x1 << 6)
-#define F_HPD (0x1 << 5)
-#define HPD_CTRL (0x1 << 4)
-#define HDCP_RDY (0x1 << 3)
-#define STRM_VALID (0x1 << 2)
-#define F_VALID (0x1 << 1)
-#define VALID_CTRL (0x1 << 0)
-
-/* EXYNOS_DP_SYS_CTL_4 */
-#define FIX_M_AUD (0x1 << 4)
-#define ENHANCED (0x1 << 3)
-#define FIX_M_VID (0x1 << 2)
-#define M_VID_UPDATE_CTRL (0x3 << 0)
-
-/* EXYNOS_DP_TRAINING_PTN_SET */
-#define SCRAMBLER_TYPE (0x1 << 9)
-#define HW_LINK_TRAINING_PATTERN (0x1 << 8)
-#define SCRAMBLING_DISABLE (0x1 << 5)
-#define SCRAMBLING_ENABLE (0x0 << 5)
-#define LINK_QUAL_PATTERN_SET_MASK (0x3 << 2)
-#define LINK_QUAL_PATTERN_SET_PRBS7 (0x3 << 2)
-#define LINK_QUAL_PATTERN_SET_D10_2 (0x1 << 2)
-#define LINK_QUAL_PATTERN_SET_DISABLE (0x0 << 2)
-#define SW_TRAINING_PATTERN_SET_MASK (0x3 << 0)
-#define SW_TRAINING_PATTERN_SET_PTN2 (0x2 << 0)
-#define SW_TRAINING_PATTERN_SET_PTN1 (0x1 << 0)
-#define SW_TRAINING_PATTERN_SET_NORMAL (0x0 << 0)
-
-/* EXYNOS_DP_LN0_LINK_TRAINING_CTL */
-#define PRE_EMPHASIS_SET_MASK (0x3 << 3)
-#define PRE_EMPHASIS_SET_SHIFT (3)
-
-/* EXYNOS_DP_DEBUG_CTL */
-#define PLL_LOCK (0x1 << 4)
-#define F_PLL_LOCK (0x1 << 3)
-#define PLL_LOCK_CTRL (0x1 << 2)
-#define PN_INV (0x1 << 0)
-
-/* EXYNOS_DP_PLL_CTL */
-#define DP_PLL_PD (0x1 << 7)
-#define DP_PLL_RESET (0x1 << 6)
-#define DP_PLL_LOOP_BIT_DEFAULT (0x1 << 4)
-#define DP_PLL_REF_BIT_1_1250V (0x5 << 0)
-#define DP_PLL_REF_BIT_1_2500V (0x7 << 0)
-
-/* EXYNOS_DP_PHY_PD */
-#define DP_PHY_PD (0x1 << 5)
-#define AUX_PD (0x1 << 4)
-#define CH3_PD (0x1 << 3)
-#define CH2_PD (0x1 << 2)
-#define CH1_PD (0x1 << 1)
-#define CH0_PD (0x1 << 0)
-
-/* EXYNOS_DP_PHY_TEST */
-#define MACRO_RST (0x1 << 5)
-#define CH1_TEST (0x1 << 1)
-#define CH0_TEST (0x1 << 0)
-
-/* EXYNOS_DP_AUX_CH_STA */
-#define AUX_BUSY (0x1 << 4)
-#define AUX_STATUS_MASK (0xf << 0)
-
-/* EXYNOS_DP_AUX_CH_DEFER_CTL */
-#define DEFER_CTRL_EN (0x1 << 7)
-#define DEFER_COUNT(x) (((x) & 0x7f) << 0)
-
-/* EXYNOS_DP_AUX_RX_COMM */
-#define AUX_RX_COMM_I2C_DEFER (0x2 << 2)
-#define AUX_RX_COMM_AUX_DEFER (0x2 << 0)
-
-/* EXYNOS_DP_BUFFER_DATA_CTL */
-#define BUF_CLR (0x1 << 7)
-#define BUF_DATA_COUNT(x) (((x) & 0x1f) << 0)
-
-/* EXYNOS_DP_AUX_CH_CTL_1 */
-#define AUX_LENGTH(x) (((x - 1) & 0xf) << 4)
-#define AUX_TX_COMM_MASK (0xf << 0)
-#define AUX_TX_COMM_DP_TRANSACTION (0x1 << 3)
-#define AUX_TX_COMM_I2C_TRANSACTION (0x0 << 3)
-#define AUX_TX_COMM_MOT (0x1 << 2)
-#define AUX_TX_COMM_WRITE (0x0 << 0)
-#define AUX_TX_COMM_READ (0x1 << 0)
-
-/* EXYNOS_DP_AUX_ADDR_7_0 */
-#define AUX_ADDR_7_0(x) (((x) >> 0) & 0xff)
-
-/* EXYNOS_DP_AUX_ADDR_15_8 */
-#define AUX_ADDR_15_8(x) (((x) >> 8) & 0xff)
-
-/* EXYNOS_DP_AUX_ADDR_19_16 */
-#define AUX_ADDR_19_16(x) (((x) >> 16) & 0x0f)
-
-/* EXYNOS_DP_AUX_CH_CTL_2 */
-#define ADDR_ONLY (0x1 << 1)
-#define AUX_EN (0x1 << 0)
-
-/* EXYNOS_DP_SOC_GENERAL_CTL */
-#define AUDIO_MODE_SPDIF_MODE (0x1 << 8)
-#define AUDIO_MODE_MASTER_MODE (0x0 << 8)
-#define MASTER_VIDEO_INTERLACE_EN (0x1 << 4)
-#define VIDEO_MASTER_CLK_SEL (0x1 << 2)
-#define VIDEO_MASTER_MODE_EN (0x1 << 1)
-#define VIDEO_MODE_MASK (0x1 << 0)
-#define VIDEO_MODE_SLAVE_MODE (0x1 << 0)
-#define VIDEO_MODE_MASTER_MODE (0x0 << 0)
-
-#endif /* _EXYNOS_DP_REG_H */
2D or 3D acceleration; acceleration is performed by other
IP found on the SoC.
+config ROCKCHIP_ANALOGIX_DP
+ tristate "Rockchip specific extensions for Analogix DP driver"
+ depends on DRM_ROCKCHIP
+ select DRM_ANALOGIX_DP
+ help
+ This selects support for Rockchip SoC specific extensions
+ for the Analogix Core DP driver. If you want to enable DP
+ on RK3288 based SoC, you should selet this option.
+
config ROCKCHIP_DW_HDMI
tristate "Rockchip specific extensions for Synopsys DW HDMI"
depends on DRM_ROCKCHIP
rockchip_drm_gem.o rockchip_drm_vop.o
rockchipdrm-$(CONFIG_DRM_FBDEV_EMULATION) += rockchip_drm_fbdev.o
+obj-$(CONFIG_ROCKCHIP_ANALOGIX_DP) += analogix_dp-rockchip.o
obj-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o
obj-$(CONFIG_ROCKCHIP_DW_MIPI_DSI) += dw-mipi-dsi.o
obj-$(CONFIG_ROCKCHIP_INNO_HDMI) += inno_hdmi.o
--- /dev/null
+/*
+ * Rockchip SoC DP (Display Port) interface driver.
+ *
+ * Copyright (C) Fuzhou Rockchip Electronics Co., Ltd.
+ * Author: Andy Yan <andy.yan@rock-chips.com>
+ * Yakir Yang <ykk@rock-chips.com>
+ * Jeff Chen <jeff.chen@rock-chips.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/component.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_graph.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+#include <linux/clk.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_dp_helper.h>
+#include <drm/drm_of.h>
+#include <drm/drm_panel.h>
+
+#include <video/of_videomode.h>
+#include <video/videomode.h>
+
+#include <drm/bridge/analogix_dp.h>
+
+#include "rockchip_drm_drv.h"
+#include "rockchip_drm_vop.h"
+
+#define to_dp(nm) container_of(nm, struct rockchip_dp_device, nm)
+
+/* dp grf register offset */
+#define GRF_SOC_CON6 0x025c
+#define GRF_EDP_LCD_SEL_MASK BIT(5)
+#define GRF_EDP_SEL_VOP_LIT BIT(5)
+#define GRF_EDP_SEL_VOP_BIG 0
+
+struct rockchip_dp_device {
+ struct drm_device *drm_dev;
+ struct device *dev;
+ struct drm_encoder encoder;
+ struct drm_display_mode mode;
+
+ struct clk *pclk;
+ struct regmap *grf;
+ struct reset_control *rst;
+
+ struct analogix_dp_plat_data plat_data;
+};
+
+static int rockchip_dp_pre_init(struct rockchip_dp_device *dp)
+{
+ reset_control_assert(dp->rst);
+ usleep_range(10, 20);
+ reset_control_deassert(dp->rst);
+
+ return 0;
+}
+
+static int rockchip_dp_poweron(struct analogix_dp_plat_data *plat_data)
+{
+ struct rockchip_dp_device *dp = to_dp(plat_data);
+ int ret;
+
+ ret = clk_prepare_enable(dp->pclk);
+ if (ret < 0) {
+ dev_err(dp->dev, "failed to enable pclk %d\n", ret);
+ return ret;
+ }
+
+ ret = rockchip_dp_pre_init(dp);
+ if (ret < 0) {
+ dev_err(dp->dev, "failed to dp pre init %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int rockchip_dp_powerdown(struct analogix_dp_plat_data *plat_data)
+{
+ struct rockchip_dp_device *dp = to_dp(plat_data);
+
+ clk_disable_unprepare(dp->pclk);
+
+ return 0;
+}
+
+static bool
+rockchip_dp_drm_encoder_mode_fixup(struct drm_encoder *encoder,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ /* do nothing */
+ return true;
+}
+
+static void rockchip_dp_drm_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted)
+{
+ /* do nothing */
+}
+
+static void rockchip_dp_drm_encoder_enable(struct drm_encoder *encoder)
+{
+ struct rockchip_dp_device *dp = to_dp(encoder);
+ int ret;
+ u32 val;
+
+ /*
+ * FIXME(Yakir): driver should configure the CRTC output video
+ * mode with the display information which indicated the monitor
+ * support colorimetry.
+ *
+ * But don't know why the CRTC driver seems could only output the
+ * RGBaaa rightly. For example, if connect the "innolux,n116bge"
+ * eDP screen, EDID would indicated that screen only accepted the
+ * 6bpc mode. But if I configure CRTC to RGB666 output, then eDP
+ * screen would show a blue picture (RGB888 show a green picture).
+ * But if I configure CTRC to RGBaaa, and eDP driver still keep
+ * RGB666 input video mode, then screen would works prefect.
+ */
+ ret = rockchip_drm_crtc_mode_config(encoder->crtc,
+ DRM_MODE_CONNECTOR_eDP,
+ ROCKCHIP_OUT_MODE_AAAA);
+ if (ret < 0) {
+ dev_err(dp->dev, "Could not set crtc mode config (%d)\n", ret);
+ return;
+ }
+
+ ret = drm_of_encoder_active_endpoint_id(dp->dev->of_node, encoder);
+ if (ret < 0)
+ return;
+
+ if (ret)
+ val = GRF_EDP_SEL_VOP_LIT | (GRF_EDP_LCD_SEL_MASK << 16);
+ else
+ val = GRF_EDP_SEL_VOP_BIG | (GRF_EDP_LCD_SEL_MASK << 16);
+
+ dev_dbg(dp->dev, "vop %s output to dp\n", (ret) ? "LIT" : "BIG");
+
+ ret = regmap_write(dp->grf, GRF_SOC_CON6, val);
+ if (ret != 0) {
+ dev_err(dp->dev, "Could not write to GRF: %d\n", ret);
+ return;
+ }
+}
+
+static void rockchip_dp_drm_encoder_nop(struct drm_encoder *encoder)
+{
+ /* do nothing */
+}
+
+static struct drm_encoder_helper_funcs rockchip_dp_encoder_helper_funcs = {
+ .mode_fixup = rockchip_dp_drm_encoder_mode_fixup,
+ .mode_set = rockchip_dp_drm_encoder_mode_set,
+ .enable = rockchip_dp_drm_encoder_enable,
+ .disable = rockchip_dp_drm_encoder_nop,
+};
+
+static void rockchip_dp_drm_encoder_destroy(struct drm_encoder *encoder)
+{
+ drm_encoder_cleanup(encoder);
+}
+
+static struct drm_encoder_funcs rockchip_dp_encoder_funcs = {
+ .destroy = rockchip_dp_drm_encoder_destroy,
+};
+
+static int rockchip_dp_init(struct rockchip_dp_device *dp)
+{
+ struct device *dev = dp->dev;
+ struct device_node *np = dev->of_node;
+ int ret;
+
+ dp->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
+ if (IS_ERR(dp->grf)) {
+ dev_err(dev, "failed to get rockchip,grf property\n");
+ return PTR_ERR(dp->grf);
+ }
+
+ dp->pclk = devm_clk_get(dev, "pclk");
+ if (IS_ERR(dp->pclk)) {
+ dev_err(dev, "failed to get pclk property\n");
+ return PTR_ERR(dp->pclk);
+ }
+
+ dp->rst = devm_reset_control_get(dev, "dp");
+ if (IS_ERR(dp->rst)) {
+ dev_err(dev, "failed to get dp reset control\n");
+ return PTR_ERR(dp->rst);
+ }
+
+ ret = clk_prepare_enable(dp->pclk);
+ if (ret < 0) {
+ dev_err(dp->dev, "failed to enable pclk %d\n", ret);
+ return ret;
+ }
+
+ ret = rockchip_dp_pre_init(dp);
+ if (ret < 0) {
+ dev_err(dp->dev, "failed to pre init %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int rockchip_dp_drm_create_encoder(struct rockchip_dp_device *dp)
+{
+ struct drm_encoder *encoder = &dp->encoder;
+ struct drm_device *drm_dev = dp->drm_dev;
+ struct device *dev = dp->dev;
+ int ret;
+
+ encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,
+ dev->of_node);
+ DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
+
+ ret = drm_encoder_init(drm_dev, encoder, &rockchip_dp_encoder_funcs,
+ DRM_MODE_ENCODER_TMDS, NULL);
+ if (ret) {
+ DRM_ERROR("failed to initialize encoder with drm\n");
+ return ret;
+ }
+
+ drm_encoder_helper_add(encoder, &rockchip_dp_encoder_helper_funcs);
+
+ return 0;
+}
+
+static int rockchip_dp_bind(struct device *dev, struct device *master,
+ void *data)
+{
+ struct rockchip_dp_device *dp = dev_get_drvdata(dev);
+ struct drm_device *drm_dev = data;
+ int ret;
+
+ /*
+ * Just like the probe function said, we don't need the
+ * device drvrate anymore, we should leave the charge to
+ * analogix dp driver, set the device drvdata to NULL.
+ */
+ dev_set_drvdata(dev, NULL);
+
+ ret = rockchip_dp_init(dp);
+ if (ret < 0)
+ return ret;
+
+ dp->drm_dev = drm_dev;
+
+ ret = rockchip_dp_drm_create_encoder(dp);
+ if (ret) {
+ DRM_ERROR("failed to create drm encoder\n");
+ return ret;
+ }
+
+ dp->plat_data.encoder = &dp->encoder;
+
+ dp->plat_data.dev_type = RK3288_DP;
+ dp->plat_data.power_on = rockchip_dp_poweron;
+ dp->plat_data.power_off = rockchip_dp_powerdown;
+
+ return analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
+}
+
+static void rockchip_dp_unbind(struct device *dev, struct device *master,
+ void *data)
+{
+ return analogix_dp_unbind(dev, master, data);
+}
+
+static const struct component_ops rockchip_dp_component_ops = {
+ .bind = rockchip_dp_bind,
+ .unbind = rockchip_dp_unbind,
+};
+
+static int rockchip_dp_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *panel_node, *port, *endpoint;
+ struct rockchip_dp_device *dp;
+ struct drm_panel *panel;
+
+ port = of_graph_get_port_by_id(dev->of_node, 1);
+ if (!port) {
+ dev_err(dev, "can't find output port\n");
+ return -EINVAL;
+ }
+
+ endpoint = of_get_child_by_name(port, "endpoint");
+ of_node_put(port);
+ if (!endpoint) {
+ dev_err(dev, "no output endpoint found\n");
+ return -EINVAL;
+ }
+
+ panel_node = of_graph_get_remote_port_parent(endpoint);
+ of_node_put(endpoint);
+ if (!panel_node) {
+ dev_err(dev, "no output node found\n");
+ return -EINVAL;
+ }
+
+ panel = of_drm_find_panel(panel_node);
+ if (!panel) {
+ DRM_ERROR("failed to find panel\n");
+ of_node_put(panel_node);
+ return -EPROBE_DEFER;
+ }
+
+ of_node_put(panel_node);
+
+ dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL);
+ if (!dp)
+ return -ENOMEM;
+
+ dp->dev = dev;
+
+ dp->plat_data.panel = panel;
+
+ /*
+ * We just use the drvdata until driver run into component
+ * add function, and then we would set drvdata to null, so
+ * that analogix dp driver could take charge of the drvdata.
+ */
+ platform_set_drvdata(pdev, dp);
+
+ return component_add(dev, &rockchip_dp_component_ops);
+}
+
+static int rockchip_dp_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &rockchip_dp_component_ops);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int rockchip_dp_suspend(struct device *dev)
+{
+ return analogix_dp_suspend(dev);
+}
+
+static int rockchip_dp_resume(struct device *dev)
+{
+ return analogix_dp_resume(dev);
+}
+#endif
+
+static const struct dev_pm_ops rockchip_dp_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(rockchip_dp_suspend, rockchip_dp_resume)
+};
+
+static const struct of_device_id rockchip_dp_dt_ids[] = {
+ {.compatible = "rockchip,rk3288-dp",},
+ {}
+};
+MODULE_DEVICE_TABLE(of, rockchip_dp_dt_ids);
+
+static struct platform_driver rockchip_dp_driver = {
+ .probe = rockchip_dp_probe,
+ .remove = rockchip_dp_remove,
+ .driver = {
+ .name = "rockchip-dp",
+ .owner = THIS_MODULE,
+ .pm = &rockchip_dp_pm_ops,
+ .of_match_table = of_match_ptr(rockchip_dp_dt_ids),
+ },
+};
+
+module_platform_driver(rockchip_dp_driver);
+
+MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>");
+MODULE_AUTHOR("Jeff chen <jeff.chen@rock-chips.com>");
+MODULE_DESCRIPTION("Rockchip Specific Analogix-DP Driver Extension");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+/*
+ * Analogix DP (Display Port) Core interface driver.
+ *
+ * Copyright (C) 2015 Rockchip Electronics Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+#ifndef _ANALOGIX_DP_H_
+#define _ANALOGIX_DP_H_
+
+#include <drm/drm_crtc.h>
+
+enum analogix_dp_devtype {
+ EXYNOS_DP,
+ RK3288_DP,
+};
+
+struct analogix_dp_plat_data {
+ enum analogix_dp_devtype dev_type;
+ struct drm_panel *panel;
+ struct drm_encoder *encoder;
+ struct drm_connector *connector;
+
+ int (*power_on)(struct analogix_dp_plat_data *);
+ int (*power_off)(struct analogix_dp_plat_data *);
+ int (*attach)(struct analogix_dp_plat_data *, struct drm_bridge *,
+ struct drm_connector *);
+ int (*get_modes)(struct analogix_dp_plat_data *);
+};
+
+int analogix_dp_resume(struct device *dev);
+int analogix_dp_suspend(struct device *dev);
+
+int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
+ struct analogix_dp_plat_data *plat_data);
+void analogix_dp_unbind(struct device *dev, struct device *master, void *data);
+
+#endif /* _ANALOGIX_DP_H_ */
projects / deliverable / linux.git / commitdiff
