4 #include <drm/drm_connector.h>
6 #include <sound/dmaengine_pcm.h>
11 /* VC4 HDMI encoder KMS struct */
12 struct vc4_hdmi_encoder {
13 struct vc4_encoder base;
17 static inline struct vc4_hdmi_encoder *
18 to_vc4_hdmi_encoder(struct drm_encoder *encoder)
20 return container_of(encoder, struct vc4_hdmi_encoder, base.base);
24 struct vc4_hdmi_register;
25 struct vc4_hdmi_connector_state;
27 enum vc4_hdmi_phy_channel {
34 struct vc4_hdmi_variant {
35 /* Encoder Type for that controller */
36 enum vc4_encoder_type encoder_type;
39 const char *card_name;
41 /* Filename to expose the registers in debugfs */
42 const char *debugfs_name;
44 /* Maximum pixel clock supported by the controller (in Hz) */
45 unsigned long long max_pixel_clock;
47 /* List of the registers available on that variant */
48 const struct vc4_hdmi_register *registers;
50 /* Number of registers on that variant */
51 unsigned int num_registers;
54 * The variants don't map the lane in the same order in the
55 * PHY, so this is an array mapping the HDMI channel (index)
56 * to the PHY lane (value).
58 enum vc4_hdmi_phy_channel phy_lane_mapping[4];
60 /* The BCM2711 cannot deal with odd horizontal pixel timings */
61 bool unsupported_odd_h_timings;
64 * The BCM2711 CEC/hotplug IRQ controller is shared between the
65 * two HDMI controllers, and we have a proper irqchip driver for
68 bool external_irq_controller;
70 /* Callback to get the resources (memory region, interrupts,
71 * clocks, etc) for that variant.
73 int (*init_resources)(struct vc4_hdmi *vc4_hdmi);
75 /* Callback to reset the HDMI block */
76 void (*reset)(struct vc4_hdmi *vc4_hdmi);
78 /* Callback to enable / disable the CSC */
79 void (*csc_setup)(struct vc4_hdmi *vc4_hdmi,
80 struct drm_connector_state *state,
81 const struct drm_display_mode *mode);
83 /* Callback to configure the video timings in the HDMI block */
84 void (*set_timings)(struct vc4_hdmi *vc4_hdmi,
85 struct drm_connector_state *state,
86 struct drm_display_mode *mode);
88 /* Callback to initialize the PHY according to the connector state */
89 void (*phy_init)(struct vc4_hdmi *vc4_hdmi,
90 struct vc4_hdmi_connector_state *vc4_conn_state);
92 /* Callback to disable the PHY */
93 void (*phy_disable)(struct vc4_hdmi *vc4_hdmi);
95 /* Callback to enable the RNG in the PHY */
96 void (*phy_rng_enable)(struct vc4_hdmi *vc4_hdmi);
98 /* Callback to disable the RNG in the PHY */
99 void (*phy_rng_disable)(struct vc4_hdmi *vc4_hdmi);
101 /* Callback to get channel map */
102 u32 (*channel_map)(struct vc4_hdmi *vc4_hdmi, u32 channel_mask);
104 /* Enables HDR metadata */
107 /* Callback for hardware specific hotplug detect */
108 bool (*hp_detect)(struct vc4_hdmi *vc4_hdmi);
111 /* HDMI audio information */
112 struct vc4_hdmi_audio {
113 struct snd_soc_card card;
114 struct snd_soc_dai_link link;
115 struct snd_soc_dai_link_component cpu;
116 struct snd_soc_dai_link_component codec;
117 struct snd_soc_dai_link_component platform;
118 struct snd_dmaengine_dai_dma_data dma_data;
119 struct hdmi_audio_infoframe infoframe;
123 /* General HDMI hardware state. */
125 struct vc4_hdmi_audio audio;
127 struct platform_device *pdev;
128 const struct vc4_hdmi_variant *variant;
130 struct vc4_hdmi_encoder encoder;
131 struct drm_connector connector;
133 struct delayed_work scrambling_work;
135 struct i2c_adapter *ddc;
136 void __iomem *hdmicore_regs;
137 void __iomem *hd_regs;
140 void __iomem *cec_regs;
142 void __iomem *csc_regs;
144 void __iomem *dvp_regs;
146 void __iomem *phy_regs;
148 void __iomem *ram_regs;
150 void __iomem *rm_regs;
152 struct gpio_desc *hpd_gpio;
155 * On some systems (like the RPi4), some modes are in the same
156 * frequency range than the WiFi channels (1440p@60Hz for
157 * example). Should we take evasive actions because that system
158 * has a wifi adapter?
160 bool disable_wifi_frequencies;
163 * Even if HDMI0 on the RPi4 can output modes requiring a pixel
164 * rate higher than 297MHz, it needs some adjustments in the
165 * config.txt file to be able to do so and thus won't always be
170 struct cec_adapter *cec_adap;
171 struct cec_msg cec_rx_msg;
175 struct clk *cec_clock;
176 struct clk *pixel_clock;
177 struct clk *hsm_clock;
178 struct clk *audio_clock;
179 struct clk *pixel_bvb_clock;
181 struct reset_control *reset;
183 struct debugfs_regset32 hdmi_regset;
184 struct debugfs_regset32 hd_regset;
187 * @hw_lock: Spinlock protecting device register access.
192 * @mutex: Mutex protecting the driver access across multiple
193 * frameworks (KMS, ALSA).
195 * NOTE: While supported, CEC has been left out since
196 * cec_s_phys_addr_from_edid() might call .adap_enable and lead to a
197 * reentrancy issue between .get_modes (or .detect) and .adap_enable.
198 * Since we don't share any state between the CEC hooks and KMS', it's
199 * not a big deal. The only trouble might come from updating the CEC
200 * clock divider which might be affected by a modeset, but CEC should
201 * be resilient to that.
206 * @saved_adjusted_mode: Copy of @drm_crtc_state.adjusted_mode
207 * for use by ALSA hooks and interrupt handlers. Protected by @mutex.
209 struct drm_display_mode saved_adjusted_mode;
212 * @output_enabled: Is the HDMI controller currently active?
213 * Protected by @mutex.
218 * @scdc_enabled: Is the HDMI controller currently running with
219 * the scrambler on? Protected by @mutex.
224 static inline struct vc4_hdmi *
225 connector_to_vc4_hdmi(struct drm_connector *connector)
227 return container_of(connector, struct vc4_hdmi, connector);
230 static inline struct vc4_hdmi *
231 encoder_to_vc4_hdmi(struct drm_encoder *encoder)
233 struct vc4_hdmi_encoder *_encoder = to_vc4_hdmi_encoder(encoder);
235 return container_of(_encoder, struct vc4_hdmi, encoder);
238 struct vc4_hdmi_connector_state {
239 struct drm_connector_state base;
240 unsigned long long pixel_rate;
243 static inline struct vc4_hdmi_connector_state *
244 conn_state_to_vc4_hdmi_conn_state(struct drm_connector_state *conn_state)
246 return container_of(conn_state, struct vc4_hdmi_connector_state, base);
249 void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
250 struct vc4_hdmi_connector_state *vc4_conn_state);
251 void vc4_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi);
252 void vc4_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi);
253 void vc4_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi);
255 void vc5_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
256 struct vc4_hdmi_connector_state *vc4_conn_state);
257 void vc5_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi);
258 void vc5_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi);
259 void vc5_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi);
261 #endif /* _VC4_HDMI_H_ */