1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2013 Red Hat 4 * Author: Rob Clark <robdclark@gmail.com> 5 */ 6 7 #ifndef __HDMI_CONNECTOR_H__ 8 #define __HDMI_CONNECTOR_H__ 9 10 #include <linux/i2c.h> 11 #include <linux/clk.h> 12 #include <linux/platform_device.h> 13 #include <linux/regulator/consumer.h> 14 #include <linux/gpio/consumer.h> 15 #include <linux/hdmi.h> 16 17 #include <drm/drm_bridge.h> 18 19 #include "msm_drv.h" 20 #include "hdmi.xml.h" 21 22 struct hdmi_phy; 23 struct hdmi_platform_config; 24 25 struct hdmi_audio { 26 bool enabled; 27 int rate; 28 int channels; 29 }; 30 31 struct hdmi_hdcp_ctrl; 32 33 struct hdmi { 34 struct drm_device *dev; 35 struct platform_device *pdev; 36 37 const struct hdmi_platform_config *config; 38 39 /* audio state: */ 40 struct hdmi_audio audio; 41 42 /* video state: */ 43 bool power_on; 44 unsigned long int pixclock; 45 46 void __iomem *mmio; 47 void __iomem *qfprom_mmio; 48 phys_addr_t mmio_phy_addr; 49 50 struct regulator_bulk_data *hpd_regs; 51 struct regulator_bulk_data *pwr_regs; 52 struct clk **hpd_clks; 53 struct clk *extp_clk; 54 55 struct gpio_desc *hpd_gpiod; 56 57 struct hdmi_phy *phy; 58 struct device *phy_dev; 59 60 struct i2c_adapter *i2c; 61 struct drm_connector *connector; 62 struct drm_bridge *bridge; 63 64 struct drm_bridge *next_bridge; 65 66 /* the encoder we are hooked to (outside of hdmi block) */ 67 struct drm_encoder *encoder; 68 69 int irq; 70 struct workqueue_struct *workq; 71 72 struct hdmi_hdcp_ctrl *hdcp_ctrl; 73 74 /* 75 * spinlock to protect registers shared by different execution 76 * REG_HDMI_CTRL 77 * REG_HDMI_DDC_ARBITRATION 78 * REG_HDMI_HDCP_INT_CTRL 79 * REG_HDMI_HPD_CTRL 80 */ 81 spinlock_t reg_lock; 82 }; 83 84 /* platform config data (ie. from DT, or pdata) */ 85 struct hdmi_platform_config { 86 /* regulators that need to be on for hpd: */ 87 const char * const *hpd_reg_names; 88 int hpd_reg_cnt; 89 90 /* regulators that need to be on for screen pwr: */ 91 const char * const *pwr_reg_names; 92 int pwr_reg_cnt; 93 94 /* clks that need to be on for hpd: */ 95 const char * const *hpd_clk_names; 96 int hpd_clk_cnt; 97 }; 98 99 struct hdmi_bridge { 100 struct drm_bridge base; 101 struct hdmi *hdmi; 102 struct work_struct hpd_work; 103 }; 104 #define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base) 105 106 void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on); 107 108 static inline void hdmi_write(struct hdmi *hdmi, u32 reg, u32 data) 109 { 110 writel(data, hdmi->mmio + reg); 111 } 112 113 static inline u32 hdmi_read(struct hdmi *hdmi, u32 reg) 114 { 115 return readl(hdmi->mmio + reg); 116 } 117 118 static inline u32 hdmi_qfprom_read(struct hdmi *hdmi, u32 reg) 119 { 120 return readl(hdmi->qfprom_mmio + reg); 121 } 122 123 /* 124 * hdmi phy: 125 */ 126 127 enum hdmi_phy_type { 128 MSM_HDMI_PHY_8x60, 129 MSM_HDMI_PHY_8960, 130 MSM_HDMI_PHY_8x74, 131 MSM_HDMI_PHY_8996, 132 MSM_HDMI_PHY_8998, 133 MSM_HDMI_PHY_MAX, 134 }; 135 136 struct hdmi_phy_cfg { 137 enum hdmi_phy_type type; 138 void (*powerup)(struct hdmi_phy *phy, unsigned long int pixclock); 139 void (*powerdown)(struct hdmi_phy *phy); 140 const char * const *reg_names; 141 int num_regs; 142 const char * const *clk_names; 143 int num_clks; 144 }; 145 146 extern const struct hdmi_phy_cfg msm_hdmi_phy_8x60_cfg; 147 extern const struct hdmi_phy_cfg msm_hdmi_phy_8960_cfg; 148 extern const struct hdmi_phy_cfg msm_hdmi_phy_8x74_cfg; 149 extern const struct hdmi_phy_cfg msm_hdmi_phy_8996_cfg; 150 extern const struct hdmi_phy_cfg msm_hdmi_phy_8998_cfg; 151 152 struct hdmi_phy { 153 struct platform_device *pdev; 154 void __iomem *mmio; 155 struct hdmi_phy_cfg *cfg; 156 const struct hdmi_phy_funcs *funcs; 157 struct regulator_bulk_data *regs; 158 struct clk **clks; 159 }; 160 161 static inline void hdmi_phy_write(struct hdmi_phy *phy, u32 reg, u32 data) 162 { 163 writel(data, phy->mmio + reg); 164 } 165 166 static inline u32 hdmi_phy_read(struct hdmi_phy *phy, u32 reg) 167 { 168 return readl(phy->mmio + reg); 169 } 170 171 int msm_hdmi_phy_resource_enable(struct hdmi_phy *phy); 172 void msm_hdmi_phy_resource_disable(struct hdmi_phy *phy); 173 void msm_hdmi_phy_powerup(struct hdmi_phy *phy, unsigned long int pixclock); 174 void msm_hdmi_phy_powerdown(struct hdmi_phy *phy); 175 void __init msm_hdmi_phy_driver_register(void); 176 void __exit msm_hdmi_phy_driver_unregister(void); 177 178 #ifdef CONFIG_COMMON_CLK 179 int msm_hdmi_pll_8960_init(struct platform_device *pdev); 180 int msm_hdmi_pll_8996_init(struct platform_device *pdev); 181 int msm_hdmi_pll_8998_init(struct platform_device *pdev); 182 #else 183 static inline int msm_hdmi_pll_8960_init(struct platform_device *pdev) 184 { 185 return -ENODEV; 186 } 187 188 static inline int msm_hdmi_pll_8996_init(struct platform_device *pdev) 189 { 190 return -ENODEV; 191 } 192 193 static inline int msm_hdmi_pll_8998_init(struct platform_device *pdev) 194 { 195 return -ENODEV; 196 } 197 #endif 198 199 /* 200 * audio: 201 */ 202 struct hdmi_codec_daifmt; 203 struct hdmi_codec_params; 204 205 int msm_hdmi_audio_update(struct hdmi *hdmi); 206 int msm_hdmi_bridge_audio_prepare(struct drm_connector *connector, 207 struct drm_bridge *bridge, 208 struct hdmi_codec_daifmt *daifmt, 209 struct hdmi_codec_params *params); 210 void msm_hdmi_bridge_audio_shutdown(struct drm_connector *connector, 211 struct drm_bridge *bridge); 212 213 /* 214 * hdmi bridge: 215 */ 216 217 int msm_hdmi_bridge_init(struct hdmi *hdmi); 218 219 void msm_hdmi_hpd_irq(struct drm_bridge *bridge); 220 enum drm_connector_status msm_hdmi_bridge_detect( 221 struct drm_bridge *bridge); 222 int msm_hdmi_hpd_enable(struct drm_bridge *bridge); 223 void msm_hdmi_hpd_disable(struct hdmi *hdmi); 224 225 /* 226 * i2c adapter for ddc: 227 */ 228 229 void msm_hdmi_i2c_irq(struct i2c_adapter *i2c); 230 void msm_hdmi_i2c_destroy(struct i2c_adapter *i2c); 231 struct i2c_adapter *msm_hdmi_i2c_init(struct hdmi *hdmi); 232 233 /* 234 * hdcp 235 */ 236 #ifdef CONFIG_DRM_MSM_HDMI_HDCP 237 struct hdmi_hdcp_ctrl *msm_hdmi_hdcp_init(struct hdmi *hdmi); 238 void msm_hdmi_hdcp_destroy(struct hdmi *hdmi); 239 void msm_hdmi_hdcp_on(struct hdmi_hdcp_ctrl *hdcp_ctrl); 240 void msm_hdmi_hdcp_off(struct hdmi_hdcp_ctrl *hdcp_ctrl); 241 void msm_hdmi_hdcp_irq(struct hdmi_hdcp_ctrl *hdcp_ctrl); 242 #else 243 static inline struct hdmi_hdcp_ctrl *msm_hdmi_hdcp_init(struct hdmi *hdmi) 244 { 245 return ERR_PTR(-ENXIO); 246 } 247 static inline void msm_hdmi_hdcp_destroy(struct hdmi *hdmi) {} 248 static inline void msm_hdmi_hdcp_on(struct hdmi_hdcp_ctrl *hdcp_ctrl) {} 249 static inline void msm_hdmi_hdcp_off(struct hdmi_hdcp_ctrl *hdcp_ctrl) {} 250 static inline void msm_hdmi_hdcp_irq(struct hdmi_hdcp_ctrl *hdcp_ctrl) {} 251 #endif 252 253 #endif /* __HDMI_CONNECTOR_H__ */ 254