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/hdmi.h> 15 16 #include "msm_drv.h" 17 #include "hdmi.xml.h" 18 19 #define HDMI_MAX_NUM_GPIO 6 20 21 struct hdmi_phy; 22 struct hdmi_platform_config; 23 24 struct hdmi_gpio_data { 25 int num; 26 bool output; 27 int value; 28 const char *label; 29 }; 30 31 struct hdmi_audio { 32 bool enabled; 33 struct hdmi_audio_infoframe infoframe; 34 int rate; 35 }; 36 37 struct hdmi_hdcp_ctrl; 38 39 struct hdmi { 40 struct drm_device *dev; 41 struct platform_device *pdev; 42 struct platform_device *audio_pdev; 43 44 const struct hdmi_platform_config *config; 45 46 /* audio state: */ 47 struct hdmi_audio audio; 48 49 /* video state: */ 50 bool power_on; 51 unsigned long int pixclock; 52 53 void __iomem *mmio; 54 void __iomem *qfprom_mmio; 55 phys_addr_t mmio_phy_addr; 56 57 struct regulator **hpd_regs; 58 struct regulator **pwr_regs; 59 struct clk **hpd_clks; 60 struct clk **pwr_clks; 61 62 struct hdmi_phy *phy; 63 struct device *phy_dev; 64 65 struct i2c_adapter *i2c; 66 struct drm_connector *connector; 67 struct drm_bridge *bridge; 68 69 /* the encoder we are hooked to (outside of hdmi block) */ 70 struct drm_encoder *encoder; 71 72 bool hdmi_mode; /* are we in hdmi mode? */ 73 74 int irq; 75 struct workqueue_struct *workq; 76 77 struct hdmi_hdcp_ctrl *hdcp_ctrl; 78 79 /* 80 * spinlock to protect registers shared by different execution 81 * REG_HDMI_CTRL 82 * REG_HDMI_DDC_ARBITRATION 83 * REG_HDMI_HDCP_INT_CTRL 84 * REG_HDMI_HPD_CTRL 85 */ 86 spinlock_t reg_lock; 87 }; 88 89 /* platform config data (ie. from DT, or pdata) */ 90 struct hdmi_platform_config { 91 const char *mmio_name; 92 const char *qfprom_mmio_name; 93 94 /* regulators that need to be on for hpd: */ 95 const char **hpd_reg_names; 96 int hpd_reg_cnt; 97 98 /* regulators that need to be on for screen pwr: */ 99 const char **pwr_reg_names; 100 int pwr_reg_cnt; 101 102 /* clks that need to be on for hpd: */ 103 const char **hpd_clk_names; 104 const long unsigned *hpd_freq; 105 int hpd_clk_cnt; 106 107 /* clks that need to be on for screen pwr (ie pixel clk): */ 108 const char **pwr_clk_names; 109 int pwr_clk_cnt; 110 111 /* gpio's: */ 112 struct hdmi_gpio_data gpios[HDMI_MAX_NUM_GPIO]; 113 }; 114 115 void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on); 116 117 static inline void hdmi_write(struct hdmi *hdmi, u32 reg, u32 data) 118 { 119 msm_writel(data, hdmi->mmio + reg); 120 } 121 122 static inline u32 hdmi_read(struct hdmi *hdmi, u32 reg) 123 { 124 return msm_readl(hdmi->mmio + reg); 125 } 126 127 static inline u32 hdmi_qfprom_read(struct hdmi *hdmi, u32 reg) 128 { 129 return msm_readl(hdmi->qfprom_mmio + reg); 130 } 131 132 /* 133 * hdmi phy: 134 */ 135 136 enum hdmi_phy_type { 137 MSM_HDMI_PHY_8x60, 138 MSM_HDMI_PHY_8960, 139 MSM_HDMI_PHY_8x74, 140 MSM_HDMI_PHY_8996, 141 MSM_HDMI_PHY_MAX, 142 }; 143 144 struct hdmi_phy_cfg { 145 enum hdmi_phy_type type; 146 void (*powerup)(struct hdmi_phy *phy, unsigned long int pixclock); 147 void (*powerdown)(struct hdmi_phy *phy); 148 const char * const *reg_names; 149 int num_regs; 150 const char * const *clk_names; 151 int num_clks; 152 }; 153 154 extern const struct hdmi_phy_cfg msm_hdmi_phy_8x60_cfg; 155 extern const struct hdmi_phy_cfg msm_hdmi_phy_8960_cfg; 156 extern const struct hdmi_phy_cfg msm_hdmi_phy_8x74_cfg; 157 extern const struct hdmi_phy_cfg msm_hdmi_phy_8996_cfg; 158 159 struct hdmi_phy { 160 struct platform_device *pdev; 161 void __iomem *mmio; 162 struct hdmi_phy_cfg *cfg; 163 const struct hdmi_phy_funcs *funcs; 164 struct regulator **regs; 165 struct clk **clks; 166 }; 167 168 static inline void hdmi_phy_write(struct hdmi_phy *phy, u32 reg, u32 data) 169 { 170 msm_writel(data, phy->mmio + reg); 171 } 172 173 static inline u32 hdmi_phy_read(struct hdmi_phy *phy, u32 reg) 174 { 175 return msm_readl(phy->mmio + reg); 176 } 177 178 int msm_hdmi_phy_resource_enable(struct hdmi_phy *phy); 179 void msm_hdmi_phy_resource_disable(struct hdmi_phy *phy); 180 void msm_hdmi_phy_powerup(struct hdmi_phy *phy, unsigned long int pixclock); 181 void msm_hdmi_phy_powerdown(struct hdmi_phy *phy); 182 void __init msm_hdmi_phy_driver_register(void); 183 void __exit msm_hdmi_phy_driver_unregister(void); 184 185 #ifdef CONFIG_COMMON_CLK 186 int msm_hdmi_pll_8960_init(struct platform_device *pdev); 187 int msm_hdmi_pll_8996_init(struct platform_device *pdev); 188 #else 189 static inline int msm_hdmi_pll_8960_init(struct platform_device *pdev) 190 { 191 return -ENODEV; 192 } 193 194 static inline int msm_hdmi_pll_8996_init(struct platform_device *pdev) 195 { 196 return -ENODEV; 197 } 198 #endif 199 200 /* 201 * audio: 202 */ 203 /* Supported HDMI Audio channels and rates */ 204 #define MSM_HDMI_AUDIO_CHANNEL_2 0 205 #define MSM_HDMI_AUDIO_CHANNEL_4 1 206 #define MSM_HDMI_AUDIO_CHANNEL_6 2 207 #define MSM_HDMI_AUDIO_CHANNEL_8 3 208 209 #define HDMI_SAMPLE_RATE_32KHZ 0 210 #define HDMI_SAMPLE_RATE_44_1KHZ 1 211 #define HDMI_SAMPLE_RATE_48KHZ 2 212 #define HDMI_SAMPLE_RATE_88_2KHZ 3 213 #define HDMI_SAMPLE_RATE_96KHZ 4 214 #define HDMI_SAMPLE_RATE_176_4KHZ 5 215 #define HDMI_SAMPLE_RATE_192KHZ 6 216 217 int msm_hdmi_audio_update(struct hdmi *hdmi); 218 int msm_hdmi_audio_info_setup(struct hdmi *hdmi, bool enabled, 219 uint32_t num_of_channels, uint32_t channel_allocation, 220 uint32_t level_shift, bool down_mix); 221 void msm_hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate); 222 223 224 /* 225 * hdmi bridge: 226 */ 227 228 struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi); 229 void msm_hdmi_bridge_destroy(struct drm_bridge *bridge); 230 231 /* 232 * hdmi connector: 233 */ 234 235 void msm_hdmi_connector_irq(struct drm_connector *connector); 236 struct drm_connector *msm_hdmi_connector_init(struct hdmi *hdmi); 237 int msm_hdmi_hpd_enable(struct drm_connector *connector); 238 239 /* 240 * i2c adapter for ddc: 241 */ 242 243 void msm_hdmi_i2c_irq(struct i2c_adapter *i2c); 244 void msm_hdmi_i2c_destroy(struct i2c_adapter *i2c); 245 struct i2c_adapter *msm_hdmi_i2c_init(struct hdmi *hdmi); 246 247 /* 248 * hdcp 249 */ 250 #ifdef CONFIG_DRM_MSM_HDMI_HDCP 251 struct hdmi_hdcp_ctrl *msm_hdmi_hdcp_init(struct hdmi *hdmi); 252 void msm_hdmi_hdcp_destroy(struct hdmi *hdmi); 253 void msm_hdmi_hdcp_on(struct hdmi_hdcp_ctrl *hdcp_ctrl); 254 void msm_hdmi_hdcp_off(struct hdmi_hdcp_ctrl *hdcp_ctrl); 255 void msm_hdmi_hdcp_irq(struct hdmi_hdcp_ctrl *hdcp_ctrl); 256 #else 257 static inline struct hdmi_hdcp_ctrl *msm_hdmi_hdcp_init(struct hdmi *hdmi) 258 { 259 return ERR_PTR(-ENXIO); 260 } 261 static inline void msm_hdmi_hdcp_destroy(struct hdmi *hdmi) {} 262 static inline void msm_hdmi_hdcp_on(struct hdmi_hdcp_ctrl *hdcp_ctrl) {} 263 static inline void msm_hdmi_hdcp_off(struct hdmi_hdcp_ctrl *hdcp_ctrl) {} 264 static inline void msm_hdmi_hdcp_irq(struct hdmi_hdcp_ctrl *hdcp_ctrl) {} 265 #endif 266 267 #endif /* __HDMI_CONNECTOR_H__ */ 268