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 **pwr_clks; 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 **hpd_reg_names; 88 int hpd_reg_cnt; 89 90 /* regulators that need to be on for screen pwr: */ 91 const char **pwr_reg_names; 92 int pwr_reg_cnt; 93 94 /* clks that need to be on for hpd: */ 95 const char **hpd_clk_names; 96 const long unsigned *hpd_freq; 97 int hpd_clk_cnt; 98 99 /* clks that need to be on for screen pwr (ie pixel clk): */ 100 const char **pwr_clk_names; 101 int pwr_clk_cnt; 102 }; 103 104 struct hdmi_bridge { 105 struct drm_bridge base; 106 struct hdmi *hdmi; 107 struct work_struct hpd_work; 108 }; 109 #define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base) 110 111 void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on); 112 113 static inline void hdmi_write(struct hdmi *hdmi, u32 reg, u32 data) 114 { 115 writel(data, hdmi->mmio + reg); 116 } 117 118 static inline u32 hdmi_read(struct hdmi *hdmi, u32 reg) 119 { 120 return readl(hdmi->mmio + reg); 121 } 122 123 static inline u32 hdmi_qfprom_read(struct hdmi *hdmi, u32 reg) 124 { 125 return readl(hdmi->qfprom_mmio + reg); 126 } 127 128 /* 129 * hdmi phy: 130 */ 131 132 enum hdmi_phy_type { 133 MSM_HDMI_PHY_8x60, 134 MSM_HDMI_PHY_8960, 135 MSM_HDMI_PHY_8x74, 136 MSM_HDMI_PHY_8996, 137 MSM_HDMI_PHY_8998, 138 MSM_HDMI_PHY_MAX, 139 }; 140 141 struct hdmi_phy_cfg { 142 enum hdmi_phy_type type; 143 void (*powerup)(struct hdmi_phy *phy, unsigned long int pixclock); 144 void (*powerdown)(struct hdmi_phy *phy); 145 const char * const *reg_names; 146 int num_regs; 147 const char * const *clk_names; 148 int num_clks; 149 }; 150 151 extern const struct hdmi_phy_cfg msm_hdmi_phy_8x60_cfg; 152 extern const struct hdmi_phy_cfg msm_hdmi_phy_8960_cfg; 153 extern const struct hdmi_phy_cfg msm_hdmi_phy_8x74_cfg; 154 extern const struct hdmi_phy_cfg msm_hdmi_phy_8996_cfg; 155 extern const struct hdmi_phy_cfg msm_hdmi_phy_8998_cfg; 156 157 struct hdmi_phy { 158 struct platform_device *pdev; 159 void __iomem *mmio; 160 struct hdmi_phy_cfg *cfg; 161 const struct hdmi_phy_funcs *funcs; 162 struct regulator_bulk_data *regs; 163 struct clk **clks; 164 }; 165 166 static inline void hdmi_phy_write(struct hdmi_phy *phy, u32 reg, u32 data) 167 { 168 writel(data, phy->mmio + reg); 169 } 170 171 static inline u32 hdmi_phy_read(struct hdmi_phy *phy, u32 reg) 172 { 173 return readl(phy->mmio + reg); 174 } 175 176 int msm_hdmi_phy_resource_enable(struct hdmi_phy *phy); 177 void msm_hdmi_phy_resource_disable(struct hdmi_phy *phy); 178 void msm_hdmi_phy_powerup(struct hdmi_phy *phy, unsigned long int pixclock); 179 void msm_hdmi_phy_powerdown(struct hdmi_phy *phy); 180 void __init msm_hdmi_phy_driver_register(void); 181 void __exit msm_hdmi_phy_driver_unregister(void); 182 183 #ifdef CONFIG_COMMON_CLK 184 int msm_hdmi_pll_8960_init(struct platform_device *pdev); 185 int msm_hdmi_pll_8996_init(struct platform_device *pdev); 186 int msm_hdmi_pll_8998_init(struct platform_device *pdev); 187 #else 188 static inline int msm_hdmi_pll_8960_init(struct platform_device *pdev) 189 { 190 return -ENODEV; 191 } 192 193 static inline int msm_hdmi_pll_8996_init(struct platform_device *pdev) 194 { 195 return -ENODEV; 196 } 197 198 static inline int msm_hdmi_pll_8998_init(struct platform_device *pdev) 199 { 200 return -ENODEV; 201 } 202 #endif 203 204 /* 205 * audio: 206 */ 207 struct hdmi_codec_daifmt; 208 struct hdmi_codec_params; 209 210 int msm_hdmi_audio_update(struct hdmi *hdmi); 211 int msm_hdmi_bridge_audio_prepare(struct drm_connector *connector, 212 struct drm_bridge *bridge, 213 struct hdmi_codec_daifmt *daifmt, 214 struct hdmi_codec_params *params); 215 void msm_hdmi_bridge_audio_shutdown(struct drm_connector *connector, 216 struct drm_bridge *bridge); 217 218 /* 219 * hdmi bridge: 220 */ 221 222 int msm_hdmi_bridge_init(struct hdmi *hdmi); 223 224 void msm_hdmi_hpd_irq(struct drm_bridge *bridge); 225 enum drm_connector_status msm_hdmi_bridge_detect( 226 struct drm_bridge *bridge); 227 int msm_hdmi_hpd_enable(struct drm_bridge *bridge); 228 void msm_hdmi_hpd_disable(struct hdmi *hdmi); 229 230 /* 231 * i2c adapter for ddc: 232 */ 233 234 void msm_hdmi_i2c_irq(struct i2c_adapter *i2c); 235 void msm_hdmi_i2c_destroy(struct i2c_adapter *i2c); 236 struct i2c_adapter *msm_hdmi_i2c_init(struct hdmi *hdmi); 237 238 /* 239 * hdcp 240 */ 241 #ifdef CONFIG_DRM_MSM_HDMI_HDCP 242 struct hdmi_hdcp_ctrl *msm_hdmi_hdcp_init(struct hdmi *hdmi); 243 void msm_hdmi_hdcp_destroy(struct hdmi *hdmi); 244 void msm_hdmi_hdcp_on(struct hdmi_hdcp_ctrl *hdcp_ctrl); 245 void msm_hdmi_hdcp_off(struct hdmi_hdcp_ctrl *hdcp_ctrl); 246 void msm_hdmi_hdcp_irq(struct hdmi_hdcp_ctrl *hdcp_ctrl); 247 #else 248 static inline struct hdmi_hdcp_ctrl *msm_hdmi_hdcp_init(struct hdmi *hdmi) 249 { 250 return ERR_PTR(-ENXIO); 251 } 252 static inline void msm_hdmi_hdcp_destroy(struct hdmi *hdmi) {} 253 static inline void msm_hdmi_hdcp_on(struct hdmi_hdcp_ctrl *hdcp_ctrl) {} 254 static inline void msm_hdmi_hdcp_off(struct hdmi_hdcp_ctrl *hdcp_ctrl) {} 255 static inline void msm_hdmi_hdcp_irq(struct hdmi_hdcp_ctrl *hdcp_ctrl) {} 256 #endif 257 258 #endif /* __HDMI_CONNECTOR_H__ */ 259