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a47cbe72 MB |
1 | /* |
2 | * linux/sound/soc-dai.h -- ALSA SoC Layer | |
3 | * | |
4 | * Copyright: 2005-2008 Wolfson Microelectronics. PLC. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * Digital Audio Interface (DAI) API. | |
11 | */ | |
12 | ||
13 | #ifndef __LINUX_SND_SOC_DAI_H | |
14 | #define __LINUX_SND_SOC_DAI_H | |
15 | ||
16 | ||
17 | #include <linux/list.h> | |
18 | ||
19 | struct snd_pcm_substream; | |
888df395 | 20 | struct snd_soc_dapm_widget; |
49681077 | 21 | struct snd_compr_stream; |
a47cbe72 MB |
22 | |
23 | /* | |
24 | * DAI hardware audio formats. | |
25 | * | |
26 | * Describes the physical PCM data formating and clocking. Add new formats | |
27 | * to the end. | |
28 | */ | |
75d9ac46 MB |
29 | #define SND_SOC_DAIFMT_I2S 1 /* I2S mode */ |
30 | #define SND_SOC_DAIFMT_RIGHT_J 2 /* Right Justified mode */ | |
31 | #define SND_SOC_DAIFMT_LEFT_J 3 /* Left Justified mode */ | |
32 | #define SND_SOC_DAIFMT_DSP_A 4 /* L data MSB after FRM LRC */ | |
33 | #define SND_SOC_DAIFMT_DSP_B 5 /* L data MSB during FRM LRC */ | |
34 | #define SND_SOC_DAIFMT_AC97 6 /* AC97 */ | |
35 | #define SND_SOC_DAIFMT_PDM 7 /* Pulse density modulation */ | |
a47cbe72 MB |
36 | |
37 | /* left and right justified also known as MSB and LSB respectively */ | |
38 | #define SND_SOC_DAIFMT_MSB SND_SOC_DAIFMT_LEFT_J | |
39 | #define SND_SOC_DAIFMT_LSB SND_SOC_DAIFMT_RIGHT_J | |
40 | ||
41 | /* | |
42 | * DAI Clock gating. | |
43 | * | |
47db8e89 | 44 | * DAI bit clocks can be be gated (disabled) when the DAI is not |
a47cbe72 MB |
45 | * sending or receiving PCM data in a frame. This can be used to save power. |
46 | */ | |
75d9ac46 MB |
47 | #define SND_SOC_DAIFMT_CONT (1 << 4) /* continuous clock */ |
48 | #define SND_SOC_DAIFMT_GATED (2 << 4) /* clock is gated */ | |
a47cbe72 | 49 | |
a47cbe72 MB |
50 | /* |
51 | * DAI hardware signal inversions. | |
52 | * | |
53 | * Specifies whether the DAI can also support inverted clocks for the specified | |
54 | * format. | |
55 | */ | |
75d9ac46 MB |
56 | #define SND_SOC_DAIFMT_NB_NF (1 << 8) /* normal bit clock + frame */ |
57 | #define SND_SOC_DAIFMT_NB_IF (2 << 8) /* normal BCLK + inv FRM */ | |
58 | #define SND_SOC_DAIFMT_IB_NF (3 << 8) /* invert BCLK + nor FRM */ | |
59 | #define SND_SOC_DAIFMT_IB_IF (4 << 8) /* invert BCLK + FRM */ | |
a47cbe72 MB |
60 | |
61 | /* | |
62 | * DAI hardware clock masters. | |
63 | * | |
64 | * This is wrt the codec, the inverse is true for the interface | |
47db8e89 | 65 | * i.e. if the codec is clk and FRM master then the interface is |
a47cbe72 MB |
66 | * clk and frame slave. |
67 | */ | |
75d9ac46 MB |
68 | #define SND_SOC_DAIFMT_CBM_CFM (1 << 12) /* codec clk & FRM master */ |
69 | #define SND_SOC_DAIFMT_CBS_CFM (2 << 12) /* codec clk slave & FRM master */ | |
70 | #define SND_SOC_DAIFMT_CBM_CFS (3 << 12) /* codec clk master & frame slave */ | |
71 | #define SND_SOC_DAIFMT_CBS_CFS (4 << 12) /* codec clk & FRM slave */ | |
a47cbe72 MB |
72 | |
73 | #define SND_SOC_DAIFMT_FORMAT_MASK 0x000f | |
74 | #define SND_SOC_DAIFMT_CLOCK_MASK 0x00f0 | |
75 | #define SND_SOC_DAIFMT_INV_MASK 0x0f00 | |
76 | #define SND_SOC_DAIFMT_MASTER_MASK 0xf000 | |
77 | ||
78 | /* | |
79 | * Master Clock Directions | |
80 | */ | |
81 | #define SND_SOC_CLOCK_IN 0 | |
82 | #define SND_SOC_CLOCK_OUT 1 | |
83 | ||
8f738d58 MB |
84 | #define SND_SOC_STD_AC97_FMTS (SNDRV_PCM_FMTBIT_S8 |\ |
85 | SNDRV_PCM_FMTBIT_S16_LE |\ | |
86 | SNDRV_PCM_FMTBIT_S16_BE |\ | |
87 | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
88 | SNDRV_PCM_FMTBIT_S20_3BE |\ | |
89 | SNDRV_PCM_FMTBIT_S24_3LE |\ | |
90 | SNDRV_PCM_FMTBIT_S24_3BE |\ | |
d34c4307 JS |
91 | SNDRV_PCM_FMTBIT_S32_LE |\ |
92 | SNDRV_PCM_FMTBIT_S32_BE) | |
33f503c9 | 93 | |
f0fba2ad | 94 | struct snd_soc_dai_driver; |
a47cbe72 MB |
95 | struct snd_soc_dai; |
96 | struct snd_ac97_bus_ops; | |
97 | ||
9115171a | 98 | /* Digital Audio Interface registration */ |
f0fba2ad LG |
99 | int snd_soc_register_dai(struct device *dev, |
100 | struct snd_soc_dai_driver *dai_drv); | |
101 | void snd_soc_unregister_dai(struct device *dev); | |
102 | int snd_soc_register_dais(struct device *dev, | |
103 | struct snd_soc_dai_driver *dai_drv, size_t count); | |
104 | void snd_soc_unregister_dais(struct device *dev, size_t count); | |
9115171a | 105 | |
a47cbe72 MB |
106 | /* Digital Audio Interface clocking API.*/ |
107 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
108 | unsigned int freq, int dir); | |
109 | ||
110 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, | |
111 | int div_id, int div); | |
112 | ||
113 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, | |
85488037 | 114 | int pll_id, int source, unsigned int freq_in, unsigned int freq_out); |
a47cbe72 MB |
115 | |
116 | /* Digital Audio interface formatting */ | |
117 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt); | |
118 | ||
119 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, | |
a5479e38 | 120 | unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width); |
a47cbe72 | 121 | |
472df3cb BS |
122 | int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai, |
123 | unsigned int tx_num, unsigned int *tx_slot, | |
124 | unsigned int rx_num, unsigned int *rx_slot); | |
125 | ||
a47cbe72 MB |
126 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate); |
127 | ||
128 | /* Digital Audio Interface mute */ | |
129 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute); | |
130 | ||
a47cbe72 MB |
131 | struct snd_soc_dai_ops { |
132 | /* | |
133 | * DAI clocking configuration, all optional. | |
134 | * Called by soc_card drivers, normally in their hw_params. | |
135 | */ | |
136 | int (*set_sysclk)(struct snd_soc_dai *dai, | |
137 | int clk_id, unsigned int freq, int dir); | |
85488037 MB |
138 | int (*set_pll)(struct snd_soc_dai *dai, int pll_id, int source, |
139 | unsigned int freq_in, unsigned int freq_out); | |
a47cbe72 MB |
140 | int (*set_clkdiv)(struct snd_soc_dai *dai, int div_id, int div); |
141 | ||
142 | /* | |
143 | * DAI format configuration | |
144 | * Called by soc_card drivers, normally in their hw_params. | |
145 | */ | |
146 | int (*set_fmt)(struct snd_soc_dai *dai, unsigned int fmt); | |
147 | int (*set_tdm_slot)(struct snd_soc_dai *dai, | |
a5479e38 DR |
148 | unsigned int tx_mask, unsigned int rx_mask, |
149 | int slots, int slot_width); | |
472df3cb BS |
150 | int (*set_channel_map)(struct snd_soc_dai *dai, |
151 | unsigned int tx_num, unsigned int *tx_slot, | |
152 | unsigned int rx_num, unsigned int *rx_slot); | |
a47cbe72 MB |
153 | int (*set_tristate)(struct snd_soc_dai *dai, int tristate); |
154 | ||
155 | /* | |
156 | * DAI digital mute - optional. | |
157 | * Called by soc-core to minimise any pops. | |
158 | */ | |
159 | int (*digital_mute)(struct snd_soc_dai *dai, int mute); | |
dee89c4d MB |
160 | |
161 | /* | |
162 | * ALSA PCM audio operations - all optional. | |
163 | * Called by soc-core during audio PCM operations. | |
164 | */ | |
165 | int (*startup)(struct snd_pcm_substream *, | |
166 | struct snd_soc_dai *); | |
167 | void (*shutdown)(struct snd_pcm_substream *, | |
168 | struct snd_soc_dai *); | |
169 | int (*hw_params)(struct snd_pcm_substream *, | |
170 | struct snd_pcm_hw_params *, struct snd_soc_dai *); | |
171 | int (*hw_free)(struct snd_pcm_substream *, | |
172 | struct snd_soc_dai *); | |
173 | int (*prepare)(struct snd_pcm_substream *, | |
174 | struct snd_soc_dai *); | |
175 | int (*trigger)(struct snd_pcm_substream *, int, | |
176 | struct snd_soc_dai *); | |
07bf84aa LG |
177 | int (*bespoke_trigger)(struct snd_pcm_substream *, int, |
178 | struct snd_soc_dai *); | |
258020d0 PU |
179 | /* |
180 | * For hardware based FIFO caused delay reporting. | |
181 | * Optional. | |
182 | */ | |
183 | snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *, | |
184 | struct snd_soc_dai *); | |
a47cbe72 MB |
185 | }; |
186 | ||
187 | /* | |
f0fba2ad | 188 | * Digital Audio Interface Driver. |
a47cbe72 | 189 | * |
f0fba2ad LG |
190 | * Describes the Digital Audio Interface in terms of its ALSA, DAI and AC97 |
191 | * operations and capabilities. Codec and platform drivers will register this | |
192 | * structure for every DAI they have. | |
193 | * | |
194 | * This structure covers the clocking, formating and ALSA operations for each | |
195 | * interface. | |
a47cbe72 | 196 | */ |
f0fba2ad | 197 | struct snd_soc_dai_driver { |
a47cbe72 | 198 | /* DAI description */ |
f0fba2ad | 199 | const char *name; |
a47cbe72 | 200 | unsigned int id; |
3ba9e10a | 201 | int ac97_control; |
62368294 | 202 | unsigned int base; |
a47cbe72 | 203 | |
f0fba2ad LG |
204 | /* DAI driver callbacks */ |
205 | int (*probe)(struct snd_soc_dai *dai); | |
206 | int (*remove)(struct snd_soc_dai *dai); | |
dc7d7b83 MB |
207 | int (*suspend)(struct snd_soc_dai *dai); |
208 | int (*resume)(struct snd_soc_dai *dai); | |
49681077 VK |
209 | /* compress dai */ |
210 | bool compress_dai; | |
a47cbe72 MB |
211 | |
212 | /* ops */ | |
1ee46ebd | 213 | const struct snd_soc_dai_ops *ops; |
a47cbe72 MB |
214 | |
215 | /* DAI capabilities */ | |
216 | struct snd_soc_pcm_stream capture; | |
217 | struct snd_soc_pcm_stream playback; | |
06f409d7 | 218 | unsigned int symmetric_rates:1; |
0168bf0d LG |
219 | |
220 | /* probe ordering - for components with runtime dependencies */ | |
221 | int probe_order; | |
222 | int remove_order; | |
f0fba2ad LG |
223 | }; |
224 | ||
225 | /* | |
226 | * Digital Audio Interface runtime data. | |
227 | * | |
228 | * Holds runtime data for a DAI. | |
229 | */ | |
230 | struct snd_soc_dai { | |
231 | const char *name; | |
232 | int id; | |
233 | struct device *dev; | |
234 | void *ac97_pdata; /* platform_data for the ac97 codec */ | |
235 | ||
236 | /* driver ops */ | |
237 | struct snd_soc_dai_driver *driver; | |
a47cbe72 MB |
238 | |
239 | /* DAI runtime info */ | |
f0fba2ad LG |
240 | unsigned int capture_active:1; /* stream is in use */ |
241 | unsigned int playback_active:1; /* stream is in use */ | |
242 | unsigned int symmetric_rates:1; | |
243 | struct snd_pcm_runtime *runtime; | |
a47cbe72 | 244 | unsigned int active; |
f0fba2ad | 245 | unsigned char probed:1; |
a47cbe72 | 246 | |
888df395 MB |
247 | struct snd_soc_dapm_widget *playback_widget; |
248 | struct snd_soc_dapm_widget *capture_widget; | |
be09ad90 | 249 | struct snd_soc_dapm_context dapm; |
888df395 | 250 | |
f0fba2ad LG |
251 | /* DAI DMA data */ |
252 | void *playback_dma_data; | |
253 | void *capture_dma_data; | |
a47cbe72 | 254 | |
17841020 DA |
255 | /* Symmetry data - only valid if symmetry is being enforced */ |
256 | unsigned int rate; | |
257 | ||
f0fba2ad | 258 | /* parent platform/codec */ |
2466ab97 MB |
259 | struct snd_soc_platform *platform; |
260 | struct snd_soc_codec *codec; | |
261 | ||
f0fba2ad | 262 | struct snd_soc_card *card; |
a47cbe72 MB |
263 | |
264 | struct list_head list; | |
f0fba2ad | 265 | struct list_head card_list; |
a47cbe72 MB |
266 | }; |
267 | ||
fd23b7de DM |
268 | static inline void *snd_soc_dai_get_dma_data(const struct snd_soc_dai *dai, |
269 | const struct snd_pcm_substream *ss) | |
270 | { | |
271 | return (ss->stream == SNDRV_PCM_STREAM_PLAYBACK) ? | |
f0fba2ad | 272 | dai->playback_dma_data : dai->capture_dma_data; |
fd23b7de DM |
273 | } |
274 | ||
275 | static inline void snd_soc_dai_set_dma_data(struct snd_soc_dai *dai, | |
276 | const struct snd_pcm_substream *ss, | |
277 | void *data) | |
278 | { | |
279 | if (ss->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
f0fba2ad | 280 | dai->playback_dma_data = data; |
fd23b7de | 281 | else |
f0fba2ad LG |
282 | dai->capture_dma_data = data; |
283 | } | |
284 | ||
285 | static inline void snd_soc_dai_set_drvdata(struct snd_soc_dai *dai, | |
286 | void *data) | |
287 | { | |
288 | dev_set_drvdata(dai->dev, data); | |
289 | } | |
290 | ||
291 | static inline void *snd_soc_dai_get_drvdata(struct snd_soc_dai *dai) | |
292 | { | |
293 | return dev_get_drvdata(dai->dev); | |
fd23b7de DM |
294 | } |
295 | ||
a47cbe72 | 296 | #endif |