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5402626c BG |
1 | /* |
2 | * Copyright (C) STMicroelectronics SA 2014 | |
3 | * Author: Vincent Abriou <vincent.abriou@st.com> for STMicroelectronics. | |
4 | * License terms: GNU General Public License (GPL), version 2 | |
5 | */ | |
6 | ||
7 | #ifndef _STI_HDMI_H_ | |
8 | #define _STI_HDMI_H_ | |
9 | ||
10 | #include <linux/platform_device.h> | |
11 | ||
12 | #include <drm/drmP.h> | |
13 | ||
14 | #define HDMI_STA 0x0010 | |
15 | #define HDMI_STA_DLL_LCK BIT(5) | |
16 | ||
17 | struct sti_hdmi; | |
18 | ||
19 | struct hdmi_phy_ops { | |
20 | bool (*start)(struct sti_hdmi *hdmi); | |
21 | void (*stop)(struct sti_hdmi *hdmi); | |
22 | }; | |
23 | ||
24 | /** | |
25 | * STI hdmi structure | |
26 | * | |
27 | * @dev: driver device | |
28 | * @drm_dev: pointer to drm device | |
29 | * @mode: current display mode selected | |
30 | * @regs: hdmi register | |
31 | * @syscfg: syscfg register for pll rejection configuration | |
32 | * @clk_pix: hdmi pixel clock | |
33 | * @clk_tmds: hdmi tmds clock | |
34 | * @clk_phy: hdmi phy clock | |
35 | * @clk_audio: hdmi audio clock | |
36 | * @irq: hdmi interrupt number | |
37 | * @irq_status: interrupt status register | |
38 | * @phy_ops: phy start/stop operations | |
39 | * @enabled: true if hdmi is enabled else false | |
40 | * @hpd_gpio: hdmi hot plug detect gpio number | |
41 | * @hpd: hot plug detect status | |
42 | * @wait_event: wait event | |
43 | * @event_received: wait event status | |
44 | * @reset: reset control of the hdmi phy | |
45 | */ | |
46 | struct sti_hdmi { | |
47 | struct device dev; | |
48 | struct drm_device *drm_dev; | |
49 | struct drm_display_mode mode; | |
50 | void __iomem *regs; | |
51 | void __iomem *syscfg; | |
52 | struct clk *clk_pix; | |
53 | struct clk *clk_tmds; | |
54 | struct clk *clk_phy; | |
55 | struct clk *clk_audio; | |
56 | int irq; | |
57 | u32 irq_status; | |
58 | struct hdmi_phy_ops *phy_ops; | |
59 | bool enabled; | |
60 | int hpd_gpio; | |
61 | bool hpd; | |
62 | wait_queue_head_t wait_event; | |
63 | bool event_received; | |
64 | struct reset_control *reset; | |
65 | }; | |
66 | ||
67 | u32 hdmi_read(struct sti_hdmi *hdmi, int offset); | |
68 | void hdmi_write(struct sti_hdmi *hdmi, u32 val, int offset); | |
69 | ||
70 | /** | |
71 | * hdmi phy config structure | |
72 | * | |
73 | * A pointer to an array of these structures is passed to a TMDS (HDMI) output | |
74 | * via the control interface to provide board and SoC specific | |
75 | * configurations of the HDMI PHY. Each entry in the array specifies a hardware | |
76 | * specific configuration for a given TMDS clock frequency range. | |
77 | * | |
78 | * @min_tmds_freq: Lower bound of TMDS clock frequency this entry applies to | |
79 | * @max_tmds_freq: Upper bound of TMDS clock frequency this entry applies to | |
80 | * @config: SoC specific register configuration | |
81 | */ | |
82 | struct hdmi_phy_config { | |
83 | u32 min_tmds_freq; | |
84 | u32 max_tmds_freq; | |
85 | u32 config[4]; | |
86 | }; | |
87 | ||
88 | #endif |