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/hdmi-codec.h> 8 #include <sound/soc.h> 9 10 #include "vc4_drv.h" 11 12 struct vc4_hdmi; 13 struct vc4_hdmi_register; 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 const 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 drm_connector_state *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 bool streaming; 109 }; 110 111 /* General HDMI hardware state. */ 112 struct vc4_hdmi { 113 struct vc4_hdmi_audio audio; 114 115 struct platform_device *pdev; 116 const struct vc4_hdmi_variant *variant; 117 118 struct vc4_encoder encoder; 119 struct drm_connector connector; 120 121 struct delayed_work scrambling_work; 122 123 struct i2c_adapter *ddc; 124 void __iomem *hdmicore_regs; 125 void __iomem *hd_regs; 126 127 /* VC5 Only */ 128 void __iomem *cec_regs; 129 /* VC5 Only */ 130 void __iomem *csc_regs; 131 /* VC5 Only */ 132 void __iomem *dvp_regs; 133 /* VC5 Only */ 134 void __iomem *phy_regs; 135 /* VC5 Only */ 136 void __iomem *ram_regs; 137 /* VC5 Only */ 138 void __iomem *rm_regs; 139 140 struct gpio_desc *hpd_gpio; 141 142 /* 143 * On some systems (like the RPi4), some modes are in the same 144 * frequency range than the WiFi channels (1440p@60Hz for 145 * example). Should we take evasive actions because that system 146 * has a wifi adapter? 147 */ 148 bool disable_wifi_frequencies; 149 150 struct cec_adapter *cec_adap; 151 struct cec_msg cec_rx_msg; 152 bool cec_tx_ok; 153 bool cec_irq_was_rx; 154 155 struct clk *cec_clock; 156 struct clk *pixel_clock; 157 struct clk *hsm_clock; 158 struct clk *audio_clock; 159 struct clk *pixel_bvb_clock; 160 161 struct reset_control *reset; 162 163 struct debugfs_regset32 hdmi_regset; 164 struct debugfs_regset32 hd_regset; 165 166 /* VC5 only */ 167 struct debugfs_regset32 cec_regset; 168 struct debugfs_regset32 csc_regset; 169 struct debugfs_regset32 dvp_regset; 170 struct debugfs_regset32 phy_regset; 171 struct debugfs_regset32 ram_regset; 172 struct debugfs_regset32 rm_regset; 173 174 /** 175 * @hw_lock: Spinlock protecting device register access. 176 */ 177 spinlock_t hw_lock; 178 179 /** 180 * @mutex: Mutex protecting the driver access across multiple 181 * frameworks (KMS, ALSA, CEC). 182 */ 183 struct mutex mutex; 184 185 /** 186 * @saved_adjusted_mode: Copy of @drm_crtc_state.adjusted_mode 187 * for use by ALSA hooks and interrupt handlers. Protected by @mutex. 188 */ 189 struct drm_display_mode saved_adjusted_mode; 190 191 /** 192 * @packet_ram_enabled: Is the HDMI controller packet RAM currently 193 * on? Protected by @mutex. 194 */ 195 bool packet_ram_enabled; 196 197 /** 198 * @scdc_enabled: Is the HDMI controller currently running with 199 * the scrambler on? Protected by @mutex. 200 */ 201 bool scdc_enabled; 202 203 /** 204 * @output_bpc: Copy of @drm_connector_state.hdmi.output_bpc for 205 * use outside of KMS hooks. Protected by @mutex. 206 */ 207 unsigned int output_bpc; 208 209 /** 210 * @output_format: Copy of 211 * @drm_connector_state.hdmi.output_format for use outside of 212 * KMS hooks. Protected by @mutex. 213 */ 214 enum hdmi_colorspace output_format; 215 216 /** 217 * @hdmi_jack: Represents the connection state of the HDMI plug, for 218 * ALSA jack detection. 219 */ 220 struct snd_soc_jack hdmi_jack; 221 }; 222 223 #define connector_to_vc4_hdmi(_connector) \ 224 container_of_const(_connector, struct vc4_hdmi, connector) 225 226 static inline struct vc4_hdmi * 227 encoder_to_vc4_hdmi(struct drm_encoder *encoder) 228 { 229 struct vc4_encoder *_encoder = to_vc4_encoder(encoder); 230 return container_of_const(_encoder, struct vc4_hdmi, encoder); 231 } 232 233 void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi, 234 struct drm_connector_state *conn_state); 235 void vc4_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi); 236 void vc4_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi); 237 void vc4_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi); 238 239 void vc5_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi, 240 struct drm_connector_state *conn_state); 241 void vc5_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi); 242 void vc5_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi); 243 void vc5_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi); 244 245 void vc6_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi, 246 struct drm_connector_state *conn_state); 247 void vc6_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi); 248 249 #endif /* _VC4_HDMI_H_ */ 250