1 #ifndef _VC4_HDMI_H_ 2 #define _VC4_HDMI_H_ 3 4 #include <drm/drm_connector.h> 5 #include <media/cec.h> 6 #include <sound/dmaengine_pcm.h> 7 #include <sound/soc.h> 8 9 #include "vc4_drv.h" 10 11 struct vc4_hdmi; 12 struct vc4_hdmi_register; 13 struct vc4_hdmi_connector_state; 14 15 enum vc4_hdmi_phy_channel { 16 PHY_LANE_0 = 0, 17 PHY_LANE_1, 18 PHY_LANE_2, 19 PHY_LANE_CK, 20 }; 21 22 struct vc4_hdmi_variant { 23 /* Encoder Type for that controller */ 24 enum vc4_encoder_type encoder_type; 25 26 /* ALSA card name */ 27 const char *card_name; 28 29 /* Filename to expose the registers in debugfs */ 30 const char *debugfs_name; 31 32 /* Maximum pixel clock supported by the controller (in Hz) */ 33 unsigned long long max_pixel_clock; 34 35 /* List of the registers available on that variant */ 36 const struct vc4_hdmi_register *registers; 37 38 /* Number of registers on that variant */ 39 unsigned int num_registers; 40 41 /* BCM2711 Only. 42 * The variants don't map the lane in the same order in the 43 * PHY, so this is an array mapping the HDMI channel (index) 44 * to the PHY lane (value). 45 */ 46 enum vc4_hdmi_phy_channel phy_lane_mapping[4]; 47 48 /* The BCM2711 cannot deal with odd horizontal pixel timings */ 49 bool unsupported_odd_h_timings; 50 51 /* 52 * The BCM2711 CEC/hotplug IRQ controller is shared between the 53 * two HDMI controllers, and we have a proper irqchip driver for 54 * it. 55 */ 56 bool external_irq_controller; 57 58 /* Callback to get the resources (memory region, interrupts, 59 * clocks, etc) for that variant. 60 */ 61 int (*init_resources)(struct drm_device *drm, 62 struct vc4_hdmi *vc4_hdmi); 63 64 /* Callback to reset the HDMI block */ 65 void (*reset)(struct vc4_hdmi *vc4_hdmi); 66 67 /* Callback to enable / disable the CSC */ 68 void (*csc_setup)(struct vc4_hdmi *vc4_hdmi, 69 struct drm_connector_state *state, 70 const struct drm_display_mode *mode); 71 72 /* Callback to configure the video timings in the HDMI block */ 73 void (*set_timings)(struct vc4_hdmi *vc4_hdmi, 74 struct drm_connector_state *state, 75 struct drm_display_mode *mode); 76 77 /* Callback to initialize the PHY according to the connector state */ 78 void (*phy_init)(struct vc4_hdmi *vc4_hdmi, 79 struct vc4_hdmi_connector_state *vc4_conn_state); 80 81 /* Callback to disable the PHY */ 82 void (*phy_disable)(struct vc4_hdmi *vc4_hdmi); 83 84 /* Callback to enable the RNG in the PHY */ 85 void (*phy_rng_enable)(struct vc4_hdmi *vc4_hdmi); 86 87 /* Callback to disable the RNG in the PHY */ 88 void (*phy_rng_disable)(struct vc4_hdmi *vc4_hdmi); 89 90 /* Callback to get channel map */ 91 u32 (*channel_map)(struct vc4_hdmi *vc4_hdmi, u32 channel_mask); 92 93 /* Enables HDR metadata */ 94 bool supports_hdr; 95 96 /* Callback for hardware specific hotplug detect */ 97 bool (*hp_detect)(struct vc4_hdmi *vc4_hdmi); 98 }; 99 100 /* HDMI audio information */ 101 struct vc4_hdmi_audio { 102 struct snd_soc_card card; 103 struct snd_soc_dai_link link; 104 struct snd_soc_dai_link_component cpu; 105 struct snd_soc_dai_link_component codec; 106 struct snd_soc_dai_link_component platform; 107 struct snd_dmaengine_dai_dma_data dma_data; 108 struct hdmi_audio_infoframe infoframe; 109 struct platform_device *codec_pdev; 110 bool streaming; 111 }; 112 113 enum vc4_hdmi_output_format { 114 VC4_HDMI_OUTPUT_RGB, 115 VC4_HDMI_OUTPUT_YUV422, 116 VC4_HDMI_OUTPUT_YUV444, 117 VC4_HDMI_OUTPUT_YUV420, 118 }; 119 120 /* General HDMI hardware state. */ 121 struct vc4_hdmi { 122 struct vc4_hdmi_audio audio; 123 124 struct platform_device *pdev; 125 const struct vc4_hdmi_variant *variant; 126 127 struct vc4_encoder encoder; 128 struct drm_connector connector; 129 130 struct delayed_work scrambling_work; 131 132 struct i2c_adapter *ddc; 133 void __iomem *hdmicore_regs; 134 void __iomem *hd_regs; 135 136 /* VC5 Only */ 137 void __iomem *cec_regs; 138 /* VC5 Only */ 139 void __iomem *csc_regs; 140 /* VC5 Only */ 141 void __iomem *dvp_regs; 142 /* VC5 Only */ 143 void __iomem *phy_regs; 144 /* VC5 Only */ 145 void __iomem *ram_regs; 146 /* VC5 Only */ 147 void __iomem *rm_regs; 148 149 struct gpio_desc *hpd_gpio; 150 151 /* 152 * On some systems (like the RPi4), some modes are in the same 153 * frequency range than the WiFi channels (1440p@60Hz for 154 * example). Should we take evasive actions because that system 155 * has a wifi adapter? 156 */ 157 bool disable_wifi_frequencies; 158 159 /* 160 * Even if HDMI0 on the RPi4 can output modes requiring a pixel 161 * rate higher than 297MHz, it needs some adjustments in the 162 * config.txt file to be able to do so and thus won't always be 163 * available. 164 */ 165 bool disable_4kp60; 166 167 struct cec_adapter *cec_adap; 168 struct cec_msg cec_rx_msg; 169 bool cec_tx_ok; 170 bool cec_irq_was_rx; 171 172 struct clk *cec_clock; 173 struct clk *pixel_clock; 174 struct clk *hsm_clock; 175 struct clk *audio_clock; 176 struct clk *pixel_bvb_clock; 177 178 struct reset_control *reset; 179 180 struct debugfs_regset32 hdmi_regset; 181 struct debugfs_regset32 hd_regset; 182 183 /* VC5 only */ 184 struct debugfs_regset32 cec_regset; 185 struct debugfs_regset32 csc_regset; 186 struct debugfs_regset32 dvp_regset; 187 struct debugfs_regset32 phy_regset; 188 struct debugfs_regset32 ram_regset; 189 struct debugfs_regset32 rm_regset; 190 191 /** 192 * @hw_lock: Spinlock protecting device register access. 193 */ 194 spinlock_t hw_lock; 195 196 /** 197 * @mutex: Mutex protecting the driver access across multiple 198 * frameworks (KMS, ALSA). 199 * 200 * NOTE: While supported, CEC has been left out since 201 * cec_s_phys_addr_from_edid() might call .adap_enable and lead to a 202 * reentrancy issue between .get_modes (or .detect) and .adap_enable. 203 * Since we don't share any state between the CEC hooks and KMS', it's 204 * not a big deal. The only trouble might come from updating the CEC 205 * clock divider which might be affected by a modeset, but CEC should 206 * be resilient to that. 207 */ 208 struct mutex mutex; 209 210 /** 211 * @saved_adjusted_mode: Copy of @drm_crtc_state.adjusted_mode 212 * for use by ALSA hooks and interrupt handlers. Protected by @mutex. 213 */ 214 struct drm_display_mode saved_adjusted_mode; 215 216 /** 217 * @packet_ram_enabled: Is the HDMI controller packet RAM currently 218 * on? Protected by @mutex. 219 */ 220 bool packet_ram_enabled; 221 222 /** 223 * @scdc_enabled: Is the HDMI controller currently running with 224 * the scrambler on? Protected by @mutex. 225 */ 226 bool scdc_enabled; 227 228 /** 229 * @output_bpc: Copy of @vc4_connector_state.output_bpc for use 230 * outside of KMS hooks. Protected by @mutex. 231 */ 232 unsigned int output_bpc; 233 234 /** 235 * @output_format: Copy of @vc4_connector_state.output_format 236 * for use outside of KMS hooks. Protected by @mutex. 237 */ 238 enum vc4_hdmi_output_format output_format; 239 }; 240 241 static inline struct vc4_hdmi * 242 connector_to_vc4_hdmi(struct drm_connector *connector) 243 { 244 return container_of(connector, struct vc4_hdmi, connector); 245 } 246 247 static inline struct vc4_hdmi * 248 encoder_to_vc4_hdmi(struct drm_encoder *encoder) 249 { 250 struct vc4_encoder *_encoder = to_vc4_encoder(encoder); 251 return container_of(_encoder, struct vc4_hdmi, encoder); 252 } 253 254 struct vc4_hdmi_connector_state { 255 struct drm_connector_state base; 256 unsigned long long tmds_char_rate; 257 unsigned int output_bpc; 258 enum vc4_hdmi_output_format output_format; 259 }; 260 261 static inline struct vc4_hdmi_connector_state * 262 conn_state_to_vc4_hdmi_conn_state(struct drm_connector_state *conn_state) 263 { 264 return container_of(conn_state, struct vc4_hdmi_connector_state, base); 265 } 266 267 void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi, 268 struct vc4_hdmi_connector_state *vc4_conn_state); 269 void vc4_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi); 270 void vc4_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi); 271 void vc4_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi); 272 273 void vc5_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi, 274 struct vc4_hdmi_connector_state *vc4_conn_state); 275 void vc5_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi); 276 void vc5_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi); 277 void vc5_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi); 278 279 #endif /* _VC4_HDMI_H_ */ 280