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 *
to_vc4_hdmi_encoder(struct drm_encoder * 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 vc4_hdmi;
25 struct vc4_hdmi_register;
26 struct vc4_hdmi_connector_state;
27
28 enum vc4_hdmi_phy_channel {
29 PHY_LANE_0 = 0,
30 PHY_LANE_1,
31 PHY_LANE_2,
32 PHY_LANE_CK,
33 };
34
35 struct vc4_hdmi_variant {
36 /* Encoder Type for that controller */
37 enum vc4_encoder_type encoder_type;
38
39 /* ALSA card name */
40 const char *card_name;
41
42 /* Filename to expose the registers in debugfs */
43 const char *debugfs_name;
44
45 /* Maximum pixel clock supported by the controller (in Hz) */
46 unsigned long long max_pixel_clock;
47
48 /* List of the registers available on that variant */
49 const struct vc4_hdmi_register *registers;
50
51 /* Number of registers on that variant */
52 unsigned int num_registers;
53
54 /* BCM2711 Only.
55 * The variants don't map the lane in the same order in the
56 * PHY, so this is an array mapping the HDMI channel (index)
57 * to the PHY lane (value).
58 */
59 enum vc4_hdmi_phy_channel phy_lane_mapping[4];
60
61 /* The BCM2711 cannot deal with odd horizontal pixel timings */
62 bool unsupported_odd_h_timings;
63
64 /*
65 * The BCM2711 CEC/hotplug IRQ controller is shared between the
66 * two HDMI controllers, and we have a proper irqchip driver for
67 * it.
68 */
69 bool external_irq_controller;
70
71 /* Callback to get the resources (memory region, interrupts,
72 * clocks, etc) for that variant.
73 */
74 int (*init_resources)(struct vc4_hdmi *vc4_hdmi);
75
76 /* Callback to reset the HDMI block */
77 void (*reset)(struct vc4_hdmi *vc4_hdmi);
78
79 /* Callback to enable / disable the CSC */
80 void (*csc_setup)(struct vc4_hdmi *vc4_hdmi, bool enable);
81
82 /* Callback to configure the video timings in the HDMI block */
83 void (*set_timings)(struct vc4_hdmi *vc4_hdmi,
84 struct drm_connector_state *state,
85 struct drm_display_mode *mode);
86
87 /* Callback to initialize the PHY according to the connector state */
88 void (*phy_init)(struct vc4_hdmi *vc4_hdmi,
89 struct vc4_hdmi_connector_state *vc4_conn_state);
90
91 /* Callback to disable the PHY */
92 void (*phy_disable)(struct vc4_hdmi *vc4_hdmi);
93
94 /* Callback to enable the RNG in the PHY */
95 void (*phy_rng_enable)(struct vc4_hdmi *vc4_hdmi);
96
97 /* Callback to disable the RNG in the PHY */
98 void (*phy_rng_disable)(struct vc4_hdmi *vc4_hdmi);
99
100 /* Callback to get channel map */
101 u32 (*channel_map)(struct vc4_hdmi *vc4_hdmi, u32 channel_mask);
102 };
103
104 /* HDMI audio information */
105 struct vc4_hdmi_audio {
106 struct snd_soc_card card;
107 struct snd_soc_dai_link link;
108 struct snd_soc_dai_link_component cpu;
109 struct snd_soc_dai_link_component codec;
110 struct snd_soc_dai_link_component platform;
111 int samplerate;
112 int channels;
113 struct snd_dmaengine_dai_dma_data dma_data;
114 struct snd_pcm_substream *substream;
115
116 bool streaming;
117 };
118
119 /* General HDMI hardware state. */
120 struct vc4_hdmi {
121 struct vc4_hdmi_audio audio;
122
123 struct platform_device *pdev;
124 const struct vc4_hdmi_variant *variant;
125
126 struct vc4_hdmi_encoder encoder;
127 struct drm_connector connector;
128
129 struct i2c_adapter *ddc;
130 void __iomem *hdmicore_regs;
131 void __iomem *hd_regs;
132
133 /* VC5 Only */
134 void __iomem *cec_regs;
135 /* VC5 Only */
136 void __iomem *csc_regs;
137 /* VC5 Only */
138 void __iomem *dvp_regs;
139 /* VC5 Only */
140 void __iomem *phy_regs;
141 /* VC5 Only */
142 void __iomem *ram_regs;
143 /* VC5 Only */
144 void __iomem *rm_regs;
145
146 int hpd_gpio;
147 bool hpd_active_low;
148
149 /*
150 * On some systems (like the RPi4), some modes are in the same
151 * frequency range than the WiFi channels (1440p@60Hz for
152 * example). Should we take evasive actions because that system
153 * has a wifi adapter?
154 */
155 bool disable_wifi_frequencies;
156
157 struct cec_adapter *cec_adap;
158 struct cec_msg cec_rx_msg;
159 bool cec_tx_ok;
160 bool cec_irq_was_rx;
161
162 struct clk *cec_clock;
163 struct clk *pixel_clock;
164 struct clk *hsm_clock;
165 struct clk *audio_clock;
166 struct clk *pixel_bvb_clock;
167
168 struct reset_control *reset;
169
170 struct debugfs_regset32 hdmi_regset;
171 struct debugfs_regset32 hd_regset;
172 };
173
174 static inline struct vc4_hdmi *
connector_to_vc4_hdmi(struct drm_connector * connector)175 connector_to_vc4_hdmi(struct drm_connector *connector)
176 {
177 return container_of(connector, struct vc4_hdmi, connector);
178 }
179
180 static inline struct vc4_hdmi *
encoder_to_vc4_hdmi(struct drm_encoder * encoder)181 encoder_to_vc4_hdmi(struct drm_encoder *encoder)
182 {
183 struct vc4_hdmi_encoder *_encoder = to_vc4_hdmi_encoder(encoder);
184
185 return container_of(_encoder, struct vc4_hdmi, encoder);
186 }
187
188 struct vc4_hdmi_connector_state {
189 struct drm_connector_state base;
190 unsigned long long pixel_rate;
191 };
192
193 static inline struct vc4_hdmi_connector_state *
conn_state_to_vc4_hdmi_conn_state(struct drm_connector_state * conn_state)194 conn_state_to_vc4_hdmi_conn_state(struct drm_connector_state *conn_state)
195 {
196 return container_of(conn_state, struct vc4_hdmi_connector_state, base);
197 }
198
199 void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
200 struct vc4_hdmi_connector_state *vc4_conn_state);
201 void vc4_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi);
202 void vc4_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi);
203 void vc4_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi);
204
205 void vc5_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
206 struct vc4_hdmi_connector_state *vc4_conn_state);
207 void vc5_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi);
208 void vc5_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi);
209 void vc5_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi);
210
211 #endif /* _VC4_HDMI_H_ */
212