LXR linux/drivers/gpu/drm/sti/sti

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Copyright (C) STMicroelectronics SA 2014
   4 * Author: Vincent Abriou <vincent.abriou@st.com> for STMicroelectronics.
   5 */
   6
   7#ifndef _STI_HDMI_H_
   8#define _STI_HDMI_H_
   9
  10#include <linux/hdmi.h>
  11#include <linux/platform_device.h>
  12
  13#include <drm/drmP.h>
  14#include <media/cec-notifier.h>
  15
  16#define HDMI_STA           0x0010
  17#define HDMI_STA_DLL_LCK   BIT(5)
  18#define HDMI_STA_HOT_PLUG  BIT(4)
  19
  20struct sti_hdmi;
  21
  22struct hdmi_phy_ops {
  23        bool (*start)(struct sti_hdmi *hdmi);
  24        void (*stop)(struct sti_hdmi *hdmi);
  25};
  26
  27struct hdmi_audio_params {
  28        bool enabled;
  29        unsigned int sample_width;
  30        unsigned int sample_rate;
  31        struct hdmi_audio_infoframe cea;
  32};
  33
  34static const struct drm_prop_enum_list colorspace_mode_names[] = {
  35        { HDMI_COLORSPACE_RGB, "rgb" },
  36        { HDMI_COLORSPACE_YUV422, "yuv422" },
  37        { HDMI_COLORSPACE_YUV444, "yuv444" },
  38};
  39
  40#define DEFAULT_COLORSPACE_MODE HDMI_COLORSPACE_RGB
  41
  42/**
  43 * STI hdmi structure
  44 *
  45 * @dev: driver device
  46 * @drm_dev: pointer to drm device
  47 * @mode: current display mode selected
  48 * @regs: hdmi register
  49 * @syscfg: syscfg register for pll rejection configuration
  50 * @clk_pix: hdmi pixel clock
  51 * @clk_tmds: hdmi tmds clock
  52 * @clk_phy: hdmi phy clock
  53 * @clk_audio: hdmi audio clock
  54 * @irq: hdmi interrupt number
  55 * @irq_status: interrupt status register
  56 * @phy_ops: phy start/stop operations
  57 * @enabled: true if hdmi is enabled else false
  58 * @hpd: hot plug detect status
  59 * @wait_event: wait event
  60 * @event_received: wait event status
  61 * @reset: reset control of the hdmi phy
  62 * @ddc_adapt: i2c ddc adapter
  63 * @colorspace: current colorspace selected
  64 * @hdmi_monitor: true if HDMI monitor detected else DVI monitor assumed
  65 * @audio_pdev: ASoC hdmi-codec platform device
  66 * @audio: hdmi audio parameters.
  67 * @drm_connector: hdmi connector
  68 * @notifier: hotplug detect notifier
  69 */
  70struct sti_hdmi {
  71        struct device dev;
  72        struct drm_device *drm_dev;
  73        struct drm_display_mode mode;
  74        void __iomem *regs;
  75        void __iomem *syscfg;
  76        struct clk *clk_pix;
  77        struct clk *clk_tmds;
  78        struct clk *clk_phy;
  79        struct clk *clk_audio;
  80        int irq;
  81        u32 irq_status;
  82        struct hdmi_phy_ops *phy_ops;
  83        bool enabled;
  84        bool hpd;
  85        wait_queue_head_t wait_event;
  86        bool event_received;
  87        struct reset_control *reset;
  88        struct i2c_adapter *ddc_adapt;
  89        enum hdmi_colorspace colorspace;
  90        bool hdmi_monitor;
  91        struct platform_device *audio_pdev;
  92        struct hdmi_audio_params audio;
  93        struct drm_connector *drm_connector;
  94        struct cec_notifier *notifier;
  95};
  96
  97u32 hdmi_read(struct sti_hdmi *hdmi, int offset);
  98void hdmi_write(struct sti_hdmi *hdmi, u32 val, int offset);
  99
 100/**
 101 * hdmi phy config structure
 102 *
 103 * A pointer to an array of these structures is passed to a TMDS (HDMI) output
 104 * via the control interface to provide board and SoC specific
 105 * configurations of the HDMI PHY. Each entry in the array specifies a hardware
 106 * specific configuration for a given TMDS clock frequency range.
 107 *
 108 * @min_tmds_freq: Lower bound of TMDS clock frequency this entry applies to
 109 * @max_tmds_freq: Upper bound of TMDS clock frequency this entry applies to
 110 * @config: SoC specific register configuration
 111 */
 112struct hdmi_phy_config {
 113        u32 min_tmds_freq;
 114        u32 max_tmds_freq;
 115        u32 config[4];
 116};
 117
 118#endif
 119