drivers/gpu/drm/i915/intel_dsi.h

   1 /*
   2  * Copyright © 2013 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #ifndef _INTEL_DSI_H
  25 #define _INTEL_DSI_H
  26
  27 #include <drm/drmP.h>
  28 #include <drm/drm_crtc.h>
  29 #include <drm/drm_mipi_dsi.h>
  30 #include "intel_drv.h"
  31
  32 /* Dual Link support */
  33 #define DSI_DUAL_LINK_NONE              0
  34 #define DSI_DUAL_LINK_FRONT_BACK        1
  35 #define DSI_DUAL_LINK_PIXEL_ALT         2
  36
  37 int dsi_pixel_format_bpp(int pixel_format);
  38
  39 struct intel_dsi_host;
  40
  41 struct intel_dsi {
  42         struct intel_encoder base;
  43
  44         struct drm_panel *panel;
  45         struct intel_dsi_host *dsi_hosts[I915_MAX_PORTS];
  46
  47         /* GPIO Desc for CRC based Panel control */
  48         struct gpio_desc *gpio_panel;
  49
  50         struct intel_connector *attached_connector;
  51
  52         /* bit mask of ports being driven */
  53         u16 ports;
  54
  55         /* if true, use HS mode, otherwise LP */
  56         bool hs;
  57
  58         /* virtual channel */
  59         int channel;
  60
  61         /* Video mode or command mode */
  62         u16 operation_mode;
  63
  64         /* number of DSI lanes */
  65         unsigned int lane_count;
  66
  67         /* video mode pixel format for MIPI_DSI_FUNC_PRG register */
  68         u32 pixel_format;
  69
  70         /* video mode format for MIPI_VIDEO_MODE_FORMAT register */
  71         u32 video_mode_format;
  72
  73         /* eot for MIPI_EOT_DISABLE register */
  74         u8 eotp_pkt;
  75         u8 clock_stop;
  76
  77         u8 escape_clk_div;
  78         u8 dual_link;
  79         u8 pixel_overlap;
  80         u32 port_bits;
  81         u32 bw_timer;
  82         u32 dphy_reg;
  83         u32 video_frmt_cfg_bits;
  84         u16 lp_byte_clk;
  85
  86         /* timeouts in byte clocks */
  87         u16 lp_rx_timeout;
  88         u16 turn_arnd_val;
  89         u16 rst_timer_val;
  90         u16 hs_to_lp_count;
  91         u16 clk_lp_to_hs_count;
  92         u16 clk_hs_to_lp_count;
  93
  94         u16 init_count;
  95         u32 pclk;
  96         u16 burst_mode_ratio;
  97
  98         /* all delays in ms */
  99         u16 backlight_off_delay;
 100         u16 backlight_on_delay;
 101         u16 panel_on_delay;
 102         u16 panel_off_delay;
 103         u16 panel_pwr_cycle_delay;
 104 };
 105
 106 struct intel_dsi_host {
 107         struct mipi_dsi_host base;
 108         struct intel_dsi *intel_dsi;
 109         enum port port;
 110
 111         /* our little hack */
 112         struct mipi_dsi_device *device;
 113 };
 114
 115 static inline struct intel_dsi_host *to_intel_dsi_host(struct mipi_dsi_host *h)
 116 {
 117         return container_of(h, struct intel_dsi_host, base);
 118 }
 119
 120 #define for_each_dsi_port(__port, __ports_mask) \
 121         for ((__port) = PORT_A; (__port) < I915_MAX_PORTS; (__port)++)  \
 122                 for_each_if ((__ports_mask) & (1 << (__port)))
 123
 124 static inline struct intel_dsi *enc_to_intel_dsi(struct drm_encoder *encoder)
 125 {
 126         return container_of(encoder, struct intel_dsi, base.base);
 127 }
 128
 129 extern void intel_enable_dsi_pll(struct intel_encoder *encoder);
 130 extern void intel_disable_dsi_pll(struct intel_encoder *encoder);
 131 extern u32 intel_dsi_get_pclk(struct intel_encoder *encoder, int pipe_bpp);
 132 extern void intel_dsi_reset_clocks(struct intel_encoder *encoder,
 133                                                         enum port port);
 134
 135 struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id);
 136
 137 #endif /* _INTEL_DSI_H */