drivers/gpu/drm/vc4/vc4_hdmi.h

   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 /* VC4 HDMI encoder KMS struct */
  12 struct vc4_hdmi_encoder {
  13         struct vc4_encoder base;
  14         bool hdmi_monitor;
  15         bool limited_rgb_range;
  16 };
  17
  18 static inline struct vc4_hdmi_encoder *
  19 to_vc4_hdmi_encoder(struct drm_encoder *encoder)
  20 {
  21         return container_of(encoder, struct vc4_hdmi_encoder, base.base);
  22 }
  23
  24 struct drm_display_mode;
  25
  26 struct vc4_hdmi;
  27 struct vc4_hdmi_register;
  28
  29 enum vc4_hdmi_phy_channel {
  30         PHY_LANE_0 = 0,
  31         PHY_LANE_1,
  32         PHY_LANE_2,
  33         PHY_LANE_CK,
  34 };
  35
  36 struct vc4_hdmi_variant {
  37         /* Encoder Type for that controller */
  38         enum vc4_encoder_type encoder_type;
  39
  40         /* ALSA card name */
  41         const char *card_name;
  42
  43         /* Filename to expose the registers in debugfs */
  44         const char *debugfs_name;
  45
  46         /* Set to true when the CEC support is available */
  47         bool cec_available;
  48
  49         /* Maximum pixel clock supported by the controller (in Hz) */
  50         unsigned long long max_pixel_clock;
  51
  52         /* List of the registers available on that variant */
  53         const struct vc4_hdmi_register *registers;
  54
  55         /* Number of registers on that variant */
  56         unsigned int num_registers;
  57
  58         /* BCM2711 Only.
  59          * The variants don't map the lane in the same order in the
  60          * PHY, so this is an array mapping the HDMI channel (index)
  61          * to the PHY lane (value).
  62          */
  63         enum vc4_hdmi_phy_channel phy_lane_mapping[4];
  64
  65         /* The BCM2711 cannot deal with odd horizontal pixel timings */
  66         bool unsupported_odd_h_timings;
  67
  68         /* Callback to get the resources (memory region, interrupts,
  69          * clocks, etc) for that variant.
  70          */
  71         int (*init_resources)(struct vc4_hdmi *vc4_hdmi);
  72
  73         /* Callback to reset the HDMI block */
  74         void (*reset)(struct vc4_hdmi *vc4_hdmi);
  75
  76         /* Callback to enable / disable the CSC */
  77         void (*csc_setup)(struct vc4_hdmi *vc4_hdmi, bool enable);
  78
  79         /* Callback to configure the video timings in the HDMI block */
  80         void (*set_timings)(struct vc4_hdmi *vc4_hdmi,
  81                             struct drm_display_mode *mode);
  82
  83         /* Callback to initialize the PHY according to the mode */
  84         void (*phy_init)(struct vc4_hdmi *vc4_hdmi,
  85                          struct drm_display_mode *mode);
  86
  87         /* Callback to disable the PHY */
  88         void (*phy_disable)(struct vc4_hdmi *vc4_hdmi);
  89
  90         /* Callback to enable the RNG in the PHY */
  91         void (*phy_rng_enable)(struct vc4_hdmi *vc4_hdmi);
  92
  93         /* Callback to disable the RNG in the PHY */
  94         void (*phy_rng_disable)(struct vc4_hdmi *vc4_hdmi);
  95
  96         /* Callback to get channel map */
  97         u32 (*channel_map)(struct vc4_hdmi *vc4_hdmi, u32 channel_mask);
  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         int samplerate;
 108         int channels;
 109         struct snd_dmaengine_dai_dma_data dma_data;
 110         struct snd_pcm_substream *substream;
 111
 112         bool streaming;
 113 };
 114
 115 /* General HDMI hardware state. */
 116 struct vc4_hdmi {
 117         struct vc4_hdmi_audio audio;
 118
 119         struct platform_device *pdev;
 120         const struct vc4_hdmi_variant *variant;
 121
 122         struct vc4_hdmi_encoder encoder;
 123         struct drm_connector connector;
 124
 125         struct i2c_adapter *ddc;
 126         void __iomem *hdmicore_regs;
 127         void __iomem *hd_regs;
 128
 129         /* VC5 Only */
 130         void __iomem *cec_regs;
 131         /* VC5 Only */
 132         void __iomem *csc_regs;
 133         /* VC5 Only */
 134         void __iomem *dvp_regs;
 135         /* VC5 Only */
 136         void __iomem *phy_regs;
 137         /* VC5 Only */
 138         void __iomem *ram_regs;
 139         /* VC5 Only */
 140         void __iomem *rm_regs;
 141
 142         int hpd_gpio;
 143         bool hpd_active_low;
 144
 145         /*
 146          * On some systems (like the RPi4), some modes are in the same
 147          * frequency range than the WiFi channels (1440p@60Hz for
 148          * example). Should we take evasive actions because that system
 149          * has a wifi adapter?
 150          */
 151         bool disable_wifi_frequencies;
 152
 153         struct cec_adapter *cec_adap;
 154         struct cec_msg cec_rx_msg;
 155         bool cec_tx_ok;
 156         bool cec_irq_was_rx;
 157
 158         struct clk *pixel_clock;
 159         struct clk *hsm_clock;
 160         struct clk *audio_clock;
 161         struct clk *pixel_bvb_clock;
 162
 163         struct reset_control *reset;
 164
 165         struct debugfs_regset32 hdmi_regset;
 166         struct debugfs_regset32 hd_regset;
 167 };
 168
 169 static inline struct vc4_hdmi *
 170 connector_to_vc4_hdmi(struct drm_connector *connector)
 171 {
 172         return container_of(connector, struct vc4_hdmi, connector);
 173 }
 174
 175 static inline struct vc4_hdmi *
 176 encoder_to_vc4_hdmi(struct drm_encoder *encoder)
 177 {
 178         struct vc4_hdmi_encoder *_encoder = to_vc4_hdmi_encoder(encoder);
 179
 180         return container_of(_encoder, struct vc4_hdmi, encoder);
 181 }
 182
 183 void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
 184                        struct drm_display_mode *mode);
 185 void vc4_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi);
 186 void vc4_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi);
 187 void vc4_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi);
 188
 189 void vc5_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
 190                        struct drm_display_mode *mode);
 191 void vc5_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi);
 192 void vc5_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi);
 193 void vc5_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi);
 194
 195 #endif /* _VC4_HDMI_H_ */