]> Git Repo - linux.git/blob - drivers/gpu/drm/vc4/vc4_hdmi.h
Merge patch series "riscv: Extension parsing fixes"
[linux.git] / 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 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                             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 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 enum vc4_hdmi_broadcast_rgb {
121         VC4_HDMI_BROADCAST_RGB_AUTO,
122         VC4_HDMI_BROADCAST_RGB_FULL,
123         VC4_HDMI_BROADCAST_RGB_LIMITED,
124 };
125
126 /* General HDMI hardware state. */
127 struct vc4_hdmi {
128         struct vc4_hdmi_audio audio;
129
130         struct platform_device *pdev;
131         const struct vc4_hdmi_variant *variant;
132
133         struct vc4_encoder encoder;
134         struct drm_connector connector;
135
136         struct delayed_work scrambling_work;
137
138         struct drm_property *broadcast_rgb_property;
139
140         struct i2c_adapter *ddc;
141         void __iomem *hdmicore_regs;
142         void __iomem *hd_regs;
143
144         /* VC5 Only */
145         void __iomem *cec_regs;
146         /* VC5 Only */
147         void __iomem *csc_regs;
148         /* VC5 Only */
149         void __iomem *dvp_regs;
150         /* VC5 Only */
151         void __iomem *phy_regs;
152         /* VC5 Only */
153         void __iomem *ram_regs;
154         /* VC5 Only */
155         void __iomem *rm_regs;
156
157         struct gpio_desc *hpd_gpio;
158
159         /*
160          * On some systems (like the RPi4), some modes are in the same
161          * frequency range than the WiFi channels (1440p@60Hz for
162          * example). Should we take evasive actions because that system
163          * has a wifi adapter?
164          */
165         bool disable_wifi_frequencies;
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, CEC).
199          */
200         struct mutex mutex;
201
202         /**
203          * @saved_adjusted_mode: Copy of @drm_crtc_state.adjusted_mode
204          * for use by ALSA hooks and interrupt handlers. Protected by @mutex.
205          */
206         struct drm_display_mode saved_adjusted_mode;
207
208         /**
209          * @packet_ram_enabled: Is the HDMI controller packet RAM currently
210          * on? Protected by @mutex.
211          */
212         bool packet_ram_enabled;
213
214         /**
215          * @scdc_enabled: Is the HDMI controller currently running with
216          * the scrambler on? Protected by @mutex.
217          */
218         bool scdc_enabled;
219
220         /**
221          * @output_bpc: Copy of @vc4_connector_state.output_bpc for use
222          * outside of KMS hooks. Protected by @mutex.
223          */
224         unsigned int output_bpc;
225
226         /**
227          * @output_format: Copy of @vc4_connector_state.output_format
228          * for use outside of KMS hooks. Protected by @mutex.
229          */
230         enum vc4_hdmi_output_format output_format;
231 };
232
233 #define connector_to_vc4_hdmi(_connector)                               \
234         container_of_const(_connector, struct vc4_hdmi, connector)
235
236 static inline struct vc4_hdmi *
237 encoder_to_vc4_hdmi(struct drm_encoder *encoder)
238 {
239         struct vc4_encoder *_encoder = to_vc4_encoder(encoder);
240         return container_of_const(_encoder, struct vc4_hdmi, encoder);
241 }
242
243 struct vc4_hdmi_connector_state {
244         struct drm_connector_state      base;
245         unsigned long long              tmds_char_rate;
246         unsigned int                    output_bpc;
247         enum vc4_hdmi_output_format     output_format;
248         enum vc4_hdmi_broadcast_rgb     broadcast_rgb;
249 };
250
251 #define conn_state_to_vc4_hdmi_conn_state(_state)                       \
252         container_of_const(_state, struct vc4_hdmi_connector_state, base)
253
254 void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
255                        struct vc4_hdmi_connector_state *vc4_conn_state);
256 void vc4_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi);
257 void vc4_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi);
258 void vc4_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi);
259
260 void vc5_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
261                        struct vc4_hdmi_connector_state *vc4_conn_state);
262 void vc5_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi);
263 void vc5_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi);
264 void vc5_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi);
265
266 #endif /* _VC4_HDMI_H_ */
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