265 lines
6.4 KiB
C
265 lines
6.4 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2013 Red Hat
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* Author: Rob Clark <robdclark@gmail.com>
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*/
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#ifndef __HDMI_CONNECTOR_H__
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#define __HDMI_CONNECTOR_H__
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#include <linux/i2c.h>
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#include <linux/clk.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/consumer.h>
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#include <linux/gpio/consumer.h>
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#include <linux/hdmi.h>
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#include <drm/drm_bridge.h>
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#include "msm_drv.h"
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#include "hdmi.xml.h"
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struct hdmi_phy;
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struct hdmi_platform_config;
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struct hdmi_audio {
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bool enabled;
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struct hdmi_audio_infoframe infoframe;
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int rate;
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};
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struct hdmi_hdcp_ctrl;
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struct hdmi {
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struct drm_device *dev;
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struct platform_device *pdev;
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struct platform_device *audio_pdev;
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const struct hdmi_platform_config *config;
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/* audio state: */
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struct hdmi_audio audio;
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/* video state: */
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bool power_on;
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unsigned long int pixclock;
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void __iomem *mmio;
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void __iomem *qfprom_mmio;
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phys_addr_t mmio_phy_addr;
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struct regulator_bulk_data *hpd_regs;
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struct regulator_bulk_data *pwr_regs;
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struct clk **hpd_clks;
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struct clk **pwr_clks;
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struct gpio_desc *hpd_gpiod;
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struct hdmi_phy *phy;
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struct device *phy_dev;
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struct i2c_adapter *i2c;
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struct drm_connector *connector;
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struct drm_bridge *bridge;
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struct drm_bridge *next_bridge;
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/* the encoder we are hooked to (outside of hdmi block) */
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struct drm_encoder *encoder;
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bool hdmi_mode; /* are we in hdmi mode? */
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int irq;
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struct workqueue_struct *workq;
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struct hdmi_hdcp_ctrl *hdcp_ctrl;
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/*
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* spinlock to protect registers shared by different execution
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* REG_HDMI_CTRL
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* REG_HDMI_DDC_ARBITRATION
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* REG_HDMI_HDCP_INT_CTRL
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* REG_HDMI_HPD_CTRL
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*/
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spinlock_t reg_lock;
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};
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/* platform config data (ie. from DT, or pdata) */
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struct hdmi_platform_config {
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/* regulators that need to be on for hpd: */
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const char **hpd_reg_names;
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int hpd_reg_cnt;
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/* regulators that need to be on for screen pwr: */
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const char **pwr_reg_names;
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int pwr_reg_cnt;
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/* clks that need to be on for hpd: */
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const char **hpd_clk_names;
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const long unsigned *hpd_freq;
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int hpd_clk_cnt;
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/* clks that need to be on for screen pwr (ie pixel clk): */
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const char **pwr_clk_names;
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int pwr_clk_cnt;
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};
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struct hdmi_bridge {
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struct drm_bridge base;
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struct hdmi *hdmi;
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struct work_struct hpd_work;
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};
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#define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base)
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void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on);
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static inline void hdmi_write(struct hdmi *hdmi, u32 reg, u32 data)
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{
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msm_writel(data, hdmi->mmio + reg);
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}
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static inline u32 hdmi_read(struct hdmi *hdmi, u32 reg)
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{
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return msm_readl(hdmi->mmio + reg);
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}
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static inline u32 hdmi_qfprom_read(struct hdmi *hdmi, u32 reg)
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{
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return msm_readl(hdmi->qfprom_mmio + reg);
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}
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/*
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* hdmi phy:
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*/
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enum hdmi_phy_type {
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MSM_HDMI_PHY_8x60,
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MSM_HDMI_PHY_8960,
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MSM_HDMI_PHY_8x74,
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MSM_HDMI_PHY_8996,
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MSM_HDMI_PHY_MAX,
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};
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struct hdmi_phy_cfg {
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enum hdmi_phy_type type;
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void (*powerup)(struct hdmi_phy *phy, unsigned long int pixclock);
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void (*powerdown)(struct hdmi_phy *phy);
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const char * const *reg_names;
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int num_regs;
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const char * const *clk_names;
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int num_clks;
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};
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extern const struct hdmi_phy_cfg msm_hdmi_phy_8x60_cfg;
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extern const struct hdmi_phy_cfg msm_hdmi_phy_8960_cfg;
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extern const struct hdmi_phy_cfg msm_hdmi_phy_8x74_cfg;
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extern const struct hdmi_phy_cfg msm_hdmi_phy_8996_cfg;
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struct hdmi_phy {
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struct platform_device *pdev;
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void __iomem *mmio;
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struct hdmi_phy_cfg *cfg;
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const struct hdmi_phy_funcs *funcs;
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struct regulator_bulk_data *regs;
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struct clk **clks;
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};
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static inline void hdmi_phy_write(struct hdmi_phy *phy, u32 reg, u32 data)
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{
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msm_writel(data, phy->mmio + reg);
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}
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static inline u32 hdmi_phy_read(struct hdmi_phy *phy, u32 reg)
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{
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return msm_readl(phy->mmio + reg);
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}
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int msm_hdmi_phy_resource_enable(struct hdmi_phy *phy);
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void msm_hdmi_phy_resource_disable(struct hdmi_phy *phy);
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void msm_hdmi_phy_powerup(struct hdmi_phy *phy, unsigned long int pixclock);
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void msm_hdmi_phy_powerdown(struct hdmi_phy *phy);
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void __init msm_hdmi_phy_driver_register(void);
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void __exit msm_hdmi_phy_driver_unregister(void);
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#ifdef CONFIG_COMMON_CLK
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int msm_hdmi_pll_8960_init(struct platform_device *pdev);
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int msm_hdmi_pll_8996_init(struct platform_device *pdev);
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#else
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static inline int msm_hdmi_pll_8960_init(struct platform_device *pdev)
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{
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return -ENODEV;
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}
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static inline int msm_hdmi_pll_8996_init(struct platform_device *pdev)
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{
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return -ENODEV;
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}
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#endif
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/*
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* audio:
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*/
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/* Supported HDMI Audio channels and rates */
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#define MSM_HDMI_AUDIO_CHANNEL_2 0
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#define MSM_HDMI_AUDIO_CHANNEL_4 1
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#define MSM_HDMI_AUDIO_CHANNEL_6 2
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#define MSM_HDMI_AUDIO_CHANNEL_8 3
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#define HDMI_SAMPLE_RATE_32KHZ 0
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#define HDMI_SAMPLE_RATE_44_1KHZ 1
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#define HDMI_SAMPLE_RATE_48KHZ 2
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#define HDMI_SAMPLE_RATE_88_2KHZ 3
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#define HDMI_SAMPLE_RATE_96KHZ 4
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#define HDMI_SAMPLE_RATE_176_4KHZ 5
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#define HDMI_SAMPLE_RATE_192KHZ 6
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int msm_hdmi_audio_update(struct hdmi *hdmi);
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int msm_hdmi_audio_info_setup(struct hdmi *hdmi, bool enabled,
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uint32_t num_of_channels, uint32_t channel_allocation,
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uint32_t level_shift, bool down_mix);
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void msm_hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate);
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/*
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* hdmi bridge:
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*/
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struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi);
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void msm_hdmi_bridge_destroy(struct drm_bridge *bridge);
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void msm_hdmi_hpd_irq(struct drm_bridge *bridge);
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enum drm_connector_status msm_hdmi_bridge_detect(
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struct drm_bridge *bridge);
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int msm_hdmi_hpd_enable(struct drm_bridge *bridge);
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void msm_hdmi_hpd_disable(struct hdmi_bridge *hdmi_bridge);
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/*
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* i2c adapter for ddc:
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*/
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void msm_hdmi_i2c_irq(struct i2c_adapter *i2c);
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void msm_hdmi_i2c_destroy(struct i2c_adapter *i2c);
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struct i2c_adapter *msm_hdmi_i2c_init(struct hdmi *hdmi);
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/*
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* hdcp
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*/
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#ifdef CONFIG_DRM_MSM_HDMI_HDCP
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struct hdmi_hdcp_ctrl *msm_hdmi_hdcp_init(struct hdmi *hdmi);
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void msm_hdmi_hdcp_destroy(struct hdmi *hdmi);
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void msm_hdmi_hdcp_on(struct hdmi_hdcp_ctrl *hdcp_ctrl);
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void msm_hdmi_hdcp_off(struct hdmi_hdcp_ctrl *hdcp_ctrl);
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void msm_hdmi_hdcp_irq(struct hdmi_hdcp_ctrl *hdcp_ctrl);
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#else
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static inline struct hdmi_hdcp_ctrl *msm_hdmi_hdcp_init(struct hdmi *hdmi)
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{
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return ERR_PTR(-ENXIO);
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}
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static inline void msm_hdmi_hdcp_destroy(struct hdmi *hdmi) {}
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static inline void msm_hdmi_hdcp_on(struct hdmi_hdcp_ctrl *hdcp_ctrl) {}
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static inline void msm_hdmi_hdcp_off(struct hdmi_hdcp_ctrl *hdcp_ctrl) {}
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static inline void msm_hdmi_hdcp_irq(struct hdmi_hdcp_ctrl *hdcp_ctrl) {}
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#endif
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#endif /* __HDMI_CONNECTOR_H__ */
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