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 bool hpd_enabled; 45 struct mutex state_mutex; /* protects two booleans */ 46 unsigned long pixclock; 47 48 void __iomem *mmio; 49 void __iomem *qfprom_mmio; 50 phys_addr_t mmio_phy_addr; 51 52 struct regulator_bulk_data *pwr_regs; 53 struct clk_bulk_data *pwr_clks; 54 struct clk *extp_clk; 55 56 struct gpio_desc *hpd_gpiod; 57 58 struct hdmi_phy *phy; 59 struct device *phy_dev; 60 61 struct i2c_adapter *i2c; 62 struct drm_connector *connector; 63 struct drm_bridge *bridge; 64 65 struct drm_bridge *next_bridge; 66 67 /* the encoder we are hooked to (outside of hdmi block) */ 68 struct drm_encoder *encoder; 69 70 int irq; 71 struct workqueue_struct *workq; 72 73 struct hdmi_hdcp_ctrl *hdcp_ctrl; 74 75 /* 76 * spinlock to protect registers shared by different execution 77 * REG_HDMI_CTRL 78 * REG_HDMI_DDC_ARBITRATION 79 * REG_HDMI_HDCP_INT_CTRL 80 * REG_HDMI_HPD_CTRL 81 */ 82 spinlock_t reg_lock; 83 }; 84 85 /* platform config data (ie. from DT, or pdata) */ 86 struct hdmi_platform_config { 87 /* regulators that need to be on for screen pwr: */ 88 const char * const *pwr_reg_names; 89 int pwr_reg_cnt; 90 91 /* clks that need to be on: */ 92 const char * const *pwr_clk_names; 93 int pwr_clk_cnt; 94 }; 95 96 struct hdmi_bridge { 97 struct drm_bridge base; 98 struct hdmi *hdmi; 99 struct work_struct hpd_work; 100 }; 101 #define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base) 102 103 void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on); 104 105 static inline void hdmi_write(struct hdmi *hdmi, u32 reg, u32 data) 106 { 107 writel(data, hdmi->mmio + reg); 108 } 109 110 static inline u32 hdmi_read(struct hdmi *hdmi, u32 reg) 111 { 112 return readl(hdmi->mmio + reg); 113 } 114 115 static inline void hdmi_clear_bits(struct hdmi *hdmi, u32 reg, u32 mask) 116 { 117 u32 val; 118 119 val = hdmi_read(hdmi, reg); 120 val &= ~mask; 121 hdmi_write(hdmi, reg, val); 122 } 123 124 static inline void hdmi_update_bits(struct hdmi *hdmi, u32 reg, u32 mask, u32 data) 125 { 126 u32 val; 127 128 val = hdmi_read(hdmi, reg); 129 val &= ~mask; 130 val |= data & mask; 131 hdmi_write(hdmi, reg, val); 132 } 133 134 static inline u32 hdmi_qfprom_read(struct hdmi *hdmi, u32 reg) 135 { 136 return readl(hdmi->qfprom_mmio + reg); 137 } 138 139 /* 140 * hdmi phy: 141 */ 142 143 enum hdmi_phy_type { 144 MSM_HDMI_PHY_8x60, 145 MSM_HDMI_PHY_8960, 146 MSM_HDMI_PHY_8x74, 147 MSM_HDMI_PHY_8996, 148 MSM_HDMI_PHY_8998, 149 MSM_HDMI_PHY_MAX, 150 }; 151 152 struct hdmi_phy_cfg { 153 enum hdmi_phy_type type; 154 void (*powerup)(struct hdmi_phy *phy, unsigned long pixclock); 155 void (*powerdown)(struct hdmi_phy *phy); 156 const char * const *reg_names; 157 int num_regs; 158 const char * const *clk_names; 159 int num_clks; 160 }; 161 162 extern const struct hdmi_phy_cfg msm_hdmi_phy_8x60_cfg; 163 extern const struct hdmi_phy_cfg msm_hdmi_phy_8960_cfg; 164 extern const struct hdmi_phy_cfg msm_hdmi_phy_8x74_cfg; 165 extern const struct hdmi_phy_cfg msm_hdmi_phy_8996_cfg; 166 extern const struct hdmi_phy_cfg msm_hdmi_phy_8998_cfg; 167 168 struct hdmi_phy { 169 struct platform_device *pdev; 170 void __iomem *mmio; 171 struct hdmi_phy_cfg *cfg; 172 const struct hdmi_phy_funcs *funcs; 173 struct regulator_bulk_data *regs; 174 struct clk **clks; 175 }; 176 177 static inline void hdmi_phy_write(struct hdmi_phy *phy, u32 reg, u32 data) 178 { 179 writel(data, phy->mmio + reg); 180 } 181 182 static inline u32 hdmi_phy_read(struct hdmi_phy *phy, u32 reg) 183 { 184 return readl(phy->mmio + reg); 185 } 186 187 int msm_hdmi_phy_resource_enable(struct hdmi_phy *phy); 188 void msm_hdmi_phy_resource_disable(struct hdmi_phy *phy); 189 void msm_hdmi_phy_powerup(struct hdmi_phy *phy, unsigned long pixclock); 190 void msm_hdmi_phy_powerdown(struct hdmi_phy *phy); 191 void __init msm_hdmi_phy_driver_register(void); 192 void __exit msm_hdmi_phy_driver_unregister(void); 193 194 #ifdef CONFIG_COMMON_CLK 195 int msm_hdmi_pll_8960_init(struct platform_device *pdev); 196 int msm_hdmi_pll_8996_init(struct platform_device *pdev); 197 int msm_hdmi_pll_8998_init(struct platform_device *pdev); 198 #else 199 static inline int msm_hdmi_pll_8960_init(struct platform_device *pdev) 200 { 201 return -ENODEV; 202 } 203 204 static inline int msm_hdmi_pll_8996_init(struct platform_device *pdev) 205 { 206 return -ENODEV; 207 } 208 209 static inline int msm_hdmi_pll_8998_init(struct platform_device *pdev) 210 { 211 return -ENODEV; 212 } 213 #endif 214 215 /* 216 * audio: 217 */ 218 struct hdmi_codec_daifmt; 219 struct hdmi_codec_params; 220 221 int msm_hdmi_audio_update(struct hdmi *hdmi); 222 int msm_hdmi_bridge_audio_prepare(struct drm_bridge *bridge, 223 struct drm_connector *connector, 224 struct hdmi_codec_daifmt *daifmt, 225 struct hdmi_codec_params *params); 226 void msm_hdmi_bridge_audio_shutdown(struct drm_bridge *bridge, 227 struct drm_connector *connector); 228 229 /* 230 * hdmi bridge: 231 */ 232 233 int msm_hdmi_bridge_init(struct hdmi *hdmi); 234 235 void msm_hdmi_hpd_irq(struct drm_bridge *bridge); 236 enum drm_connector_status msm_hdmi_bridge_detect( 237 struct drm_bridge *bridge, struct drm_connector *connector); 238 void msm_hdmi_hpd_enable(struct drm_bridge *bridge); 239 void msm_hdmi_hpd_disable(struct drm_bridge *bridge); 240 241 /* 242 * i2c adapter for ddc: 243 */ 244 245 void msm_hdmi_i2c_irq(struct i2c_adapter *i2c); 246 void msm_hdmi_i2c_destroy(struct i2c_adapter *i2c); 247 struct i2c_adapter *msm_hdmi_i2c_init(struct hdmi *hdmi); 248 249 /* 250 * hdcp 251 */ 252 #ifdef CONFIG_DRM_MSM_HDMI_HDCP 253 struct hdmi_hdcp_ctrl *msm_hdmi_hdcp_init(struct hdmi *hdmi); 254 void msm_hdmi_hdcp_destroy(struct hdmi *hdmi); 255 void msm_hdmi_hdcp_on(struct hdmi_hdcp_ctrl *hdcp_ctrl); 256 void msm_hdmi_hdcp_off(struct hdmi_hdcp_ctrl *hdcp_ctrl); 257 void msm_hdmi_hdcp_irq(struct hdmi_hdcp_ctrl *hdcp_ctrl); 258 #else 259 static inline struct hdmi_hdcp_ctrl *msm_hdmi_hdcp_init(struct hdmi *hdmi) 260 { 261 return ERR_PTR(-ENXIO); 262 } 263 static inline void msm_hdmi_hdcp_destroy(struct hdmi *hdmi) {} 264 static inline void msm_hdmi_hdcp_on(struct hdmi_hdcp_ctrl *hdcp_ctrl) {} 265 static inline void msm_hdmi_hdcp_off(struct hdmi_hdcp_ctrl *hdcp_ctrl) {} 266 static inline void msm_hdmi_hdcp_irq(struct hdmi_hdcp_ctrl *hdcp_ctrl) {} 267 #endif 268 269 #endif /* __HDMI_CONNECTOR_H__ */ 270