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Mark Browna47cbe72008-07-23 14:03:07 +01001/*
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
19struct snd_pcm_substream;
20
21/*
22 * DAI hardware audio formats.
23 *
24 * Describes the physical PCM data formating and clocking. Add new formats
25 * to the end.
26 */
Mark Brown75d9ac42011-09-27 16:41:01 +010027#define SND_SOC_DAIFMT_I2S 1 /* I2S mode */
28#define SND_SOC_DAIFMT_RIGHT_J 2 /* Right Justified mode */
29#define SND_SOC_DAIFMT_LEFT_J 3 /* Left Justified mode */
30#define SND_SOC_DAIFMT_DSP_A 4 /* L data MSB after FRM LRC */
31#define SND_SOC_DAIFMT_DSP_B 5 /* L data MSB during FRM LRC */
32#define SND_SOC_DAIFMT_AC97 6 /* AC97 */
33#define SND_SOC_DAIFMT_PDM 7 /* Pulse density modulation */
Mark Browna47cbe72008-07-23 14:03:07 +010034
35/* left and right justified also known as MSB and LSB respectively */
36#define SND_SOC_DAIFMT_MSB SND_SOC_DAIFMT_LEFT_J
37#define SND_SOC_DAIFMT_LSB SND_SOC_DAIFMT_RIGHT_J
38
39/*
40 * DAI Clock gating.
41 *
Peter Meerwald47db8e82009-07-13 23:05:11 +010042 * DAI bit clocks can be be gated (disabled) when the DAI is not
Mark Browna47cbe72008-07-23 14:03:07 +010043 * sending or receiving PCM data in a frame. This can be used to save power.
44 */
Mark Brown75d9ac42011-09-27 16:41:01 +010045#define SND_SOC_DAIFMT_CONT (1 << 4) /* continuous clock */
46#define SND_SOC_DAIFMT_GATED (2 << 4) /* clock is gated */
Mark Browna47cbe72008-07-23 14:03:07 +010047
48/*
Mark Browna47cbe72008-07-23 14:03:07 +010049 * DAI hardware signal inversions.
50 *
51 * Specifies whether the DAI can also support inverted clocks for the specified
52 * format.
53 */
Mark Brown75d9ac42011-09-27 16:41:01 +010054#define SND_SOC_DAIFMT_NB_NF (1 << 8) /* normal bit clock + frame */
55#define SND_SOC_DAIFMT_NB_IF (2 << 8) /* normal BCLK + inv FRM */
56#define SND_SOC_DAIFMT_IB_NF (3 << 8) /* invert BCLK + nor FRM */
57#define SND_SOC_DAIFMT_IB_IF (4 << 8) /* invert BCLK + FRM */
Mark Browna47cbe72008-07-23 14:03:07 +010058
59/*
60 * DAI hardware clock masters.
61 *
62 * This is wrt the codec, the inverse is true for the interface
Peter Meerwald47db8e82009-07-13 23:05:11 +010063 * i.e. if the codec is clk and FRM master then the interface is
Mark Browna47cbe72008-07-23 14:03:07 +010064 * clk and frame slave.
65 */
Mark Brown75d9ac42011-09-27 16:41:01 +010066#define SND_SOC_DAIFMT_CBM_CFM (1 << 12) /* codec clk & FRM master */
67#define SND_SOC_DAIFMT_CBS_CFM (2 << 12) /* codec clk slave & FRM master */
68#define SND_SOC_DAIFMT_CBM_CFS (3 << 12) /* codec clk master & frame slave */
69#define SND_SOC_DAIFMT_CBS_CFS (4 << 12) /* codec clk & FRM slave */
Mark Browna47cbe72008-07-23 14:03:07 +010070
71#define SND_SOC_DAIFMT_FORMAT_MASK 0x000f
72#define SND_SOC_DAIFMT_CLOCK_MASK 0x00f0
73#define SND_SOC_DAIFMT_INV_MASK 0x0f00
74#define SND_SOC_DAIFMT_MASTER_MASK 0xf000
75
76/*
77 * Master Clock Directions
78 */
79#define SND_SOC_CLOCK_IN 0
80#define SND_SOC_CLOCK_OUT 1
81
Mark Brown8f738d52009-08-09 20:08:31 +010082#define SND_SOC_STD_AC97_FMTS (SNDRV_PCM_FMTBIT_S8 |\
83 SNDRV_PCM_FMTBIT_S16_LE |\
84 SNDRV_PCM_FMTBIT_S16_BE |\
85 SNDRV_PCM_FMTBIT_S20_3LE |\
86 SNDRV_PCM_FMTBIT_S20_3BE |\
87 SNDRV_PCM_FMTBIT_S24_3LE |\
88 SNDRV_PCM_FMTBIT_S24_3BE |\
Jon Smirld34c4302009-05-13 21:59:14 -040089 SNDRV_PCM_FMTBIT_S32_LE |\
90 SNDRV_PCM_FMTBIT_S32_BE)
Mark Brown33f503c2009-05-02 12:24:55 +010091
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000092struct snd_soc_dai_driver;
Mark Browna47cbe72008-07-23 14:03:07 +010093struct snd_soc_dai;
94struct snd_ac97_bus_ops;
95
Mark Brown91151712008-11-30 23:31:24 +000096/* Digital Audio Interface registration */
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000097int snd_soc_register_dai(struct device *dev,
98 struct snd_soc_dai_driver *dai_drv);
99void snd_soc_unregister_dai(struct device *dev);
100int snd_soc_register_dais(struct device *dev,
101 struct snd_soc_dai_driver *dai_drv, size_t count);
102void snd_soc_unregister_dais(struct device *dev, size_t count);
Mark Brown91151712008-11-30 23:31:24 +0000103
Mark Browna47cbe72008-07-23 14:03:07 +0100104/* Digital Audio Interface clocking API.*/
105int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
106 unsigned int freq, int dir);
107
108int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
109 int div_id, int div);
110
111int snd_soc_dai_set_pll(struct snd_soc_dai *dai,
Mark Brown85488032009-09-05 18:52:16 +0100112 int pll_id, int source, unsigned int freq_in, unsigned int freq_out);
Mark Browna47cbe72008-07-23 14:03:07 +0100113
114/* Digital Audio interface formatting */
115int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt);
116
117int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
Daniel Ribeiroa5479e32009-06-15 21:44:31 -0300118 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width);
Mark Browna47cbe72008-07-23 14:03:07 +0100119
Barry Song472df3c2009-09-12 01:16:29 +0800120int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
121 unsigned int tx_num, unsigned int *tx_slot,
122 unsigned int rx_num, unsigned int *rx_slot);
123
Mark Browna47cbe72008-07-23 14:03:07 +0100124int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate);
125
126/* Digital Audio Interface mute */
127int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute);
128
Mark Browna47cbe72008-07-23 14:03:07 +0100129struct snd_soc_dai_ops {
130 /*
131 * DAI clocking configuration, all optional.
132 * Called by soc_card drivers, normally in their hw_params.
133 */
134 int (*set_sysclk)(struct snd_soc_dai *dai,
135 int clk_id, unsigned int freq, int dir);
Mark Brown85488032009-09-05 18:52:16 +0100136 int (*set_pll)(struct snd_soc_dai *dai, int pll_id, int source,
137 unsigned int freq_in, unsigned int freq_out);
Mark Browna47cbe72008-07-23 14:03:07 +0100138 int (*set_clkdiv)(struct snd_soc_dai *dai, int div_id, int div);
139
140 /*
141 * DAI format configuration
142 * Called by soc_card drivers, normally in their hw_params.
143 */
144 int (*set_fmt)(struct snd_soc_dai *dai, unsigned int fmt);
145 int (*set_tdm_slot)(struct snd_soc_dai *dai,
Daniel Ribeiroa5479e32009-06-15 21:44:31 -0300146 unsigned int tx_mask, unsigned int rx_mask,
147 int slots, int slot_width);
Barry Song472df3c2009-09-12 01:16:29 +0800148 int (*set_channel_map)(struct snd_soc_dai *dai,
149 unsigned int tx_num, unsigned int *tx_slot,
150 unsigned int rx_num, unsigned int *rx_slot);
Mark Browna47cbe72008-07-23 14:03:07 +0100151 int (*set_tristate)(struct snd_soc_dai *dai, int tristate);
152
153 /*
154 * DAI digital mute - optional.
155 * Called by soc-core to minimise any pops.
156 */
157 int (*digital_mute)(struct snd_soc_dai *dai, int mute);
Mark Browndee89c42008-11-18 22:11:38 +0000158
159 /*
160 * ALSA PCM audio operations - all optional.
161 * Called by soc-core during audio PCM operations.
162 */
163 int (*startup)(struct snd_pcm_substream *,
164 struct snd_soc_dai *);
165 void (*shutdown)(struct snd_pcm_substream *,
166 struct snd_soc_dai *);
167 int (*hw_params)(struct snd_pcm_substream *,
168 struct snd_pcm_hw_params *, struct snd_soc_dai *);
169 int (*hw_free)(struct snd_pcm_substream *,
170 struct snd_soc_dai *);
171 int (*prepare)(struct snd_pcm_substream *,
172 struct snd_soc_dai *);
173 int (*trigger)(struct snd_pcm_substream *, int,
174 struct snd_soc_dai *);
Peter Ujfalusi258020d2010-03-03 15:08:07 +0200175 /*
176 * For hardware based FIFO caused delay reporting.
177 * Optional.
178 */
179 snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *,
180 struct snd_soc_dai *);
Mark Browna47cbe72008-07-23 14:03:07 +0100181};
182
183/*
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000184 * Digital Audio Interface Driver.
Mark Browna47cbe72008-07-23 14:03:07 +0100185 *
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000186 * Describes the Digital Audio Interface in terms of its ALSA, DAI and AC97
187 * operations and capabilities. Codec and platform drivers will register this
188 * structure for every DAI they have.
189 *
190 * This structure covers the clocking, formating and ALSA operations for each
191 * interface.
Mark Browna47cbe72008-07-23 14:03:07 +0100192 */
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000193struct snd_soc_dai_driver {
Mark Browna47cbe72008-07-23 14:03:07 +0100194 /* DAI description */
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000195 const char *name;
Mark Browna47cbe72008-07-23 14:03:07 +0100196 unsigned int id;
Mark Brown3ba9e102008-11-24 18:01:05 +0000197 int ac97_control;
Mark Browna47cbe72008-07-23 14:03:07 +0100198
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000199 /* DAI driver callbacks */
200 int (*probe)(struct snd_soc_dai *dai);
201 int (*remove)(struct snd_soc_dai *dai);
Mark Browndc7d7b82008-12-03 18:21:52 +0000202 int (*suspend)(struct snd_soc_dai *dai);
203 int (*resume)(struct snd_soc_dai *dai);
Mark Browna47cbe72008-07-23 14:03:07 +0100204
205 /* ops */
Mark Brown1ee46eb2010-12-02 16:10:09 +0000206 const struct snd_soc_dai_ops *ops;
Mark Browna47cbe72008-07-23 14:03:07 +0100207
208 /* DAI capabilities */
209 struct snd_soc_pcm_stream capture;
210 struct snd_soc_pcm_stream playback;
Mark Brown06f409d2009-04-07 18:10:13 +0100211 unsigned int symmetric_rates:1;
Liam Girdwood0168bf02011-06-07 16:08:05 +0100212
213 /* probe ordering - for components with runtime dependencies */
214 int probe_order;
215 int remove_order;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000216};
217
218/*
219 * Digital Audio Interface runtime data.
220 *
221 * Holds runtime data for a DAI.
222 */
223struct snd_soc_dai {
224 const char *name;
225 int id;
226 struct device *dev;
227 void *ac97_pdata; /* platform_data for the ac97 codec */
228
229 /* driver ops */
230 struct snd_soc_dai_driver *driver;
Mark Browna47cbe72008-07-23 14:03:07 +0100231
232 /* DAI runtime info */
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000233 unsigned int capture_active:1; /* stream is in use */
234 unsigned int playback_active:1; /* stream is in use */
235 unsigned int symmetric_rates:1;
236 struct snd_pcm_runtime *runtime;
Mark Browna47cbe72008-07-23 14:03:07 +0100237 unsigned int active;
238 unsigned char pop_wait:1;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000239 unsigned char probed:1;
Mark Browna47cbe72008-07-23 14:03:07 +0100240
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000241 /* DAI DMA data */
242 void *playback_dma_data;
243 void *capture_dma_data;
Mark Browna47cbe72008-07-23 14:03:07 +0100244
Dong Aisheng17841022011-08-29 17:15:14 +0800245 /* Symmetry data - only valid if symmetry is being enforced */
246 unsigned int rate;
247
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000248 /* parent platform/codec */
249 union {
250 struct snd_soc_platform *platform;
251 struct snd_soc_codec *codec;
252 };
253 struct snd_soc_card *card;
Mark Browna47cbe72008-07-23 14:03:07 +0100254
255 struct list_head list;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000256 struct list_head card_list;
Mark Browna47cbe72008-07-23 14:03:07 +0100257};
258
Daniel Mackfd23b7d2010-03-19 14:52:55 +0000259static inline void *snd_soc_dai_get_dma_data(const struct snd_soc_dai *dai,
260 const struct snd_pcm_substream *ss)
261{
262 return (ss->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000263 dai->playback_dma_data : dai->capture_dma_data;
Daniel Mackfd23b7d2010-03-19 14:52:55 +0000264}
265
266static inline void snd_soc_dai_set_dma_data(struct snd_soc_dai *dai,
267 const struct snd_pcm_substream *ss,
268 void *data)
269{
270 if (ss->stream == SNDRV_PCM_STREAM_PLAYBACK)
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000271 dai->playback_dma_data = data;
Daniel Mackfd23b7d2010-03-19 14:52:55 +0000272 else
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000273 dai->capture_dma_data = data;
274}
275
276static inline void snd_soc_dai_set_drvdata(struct snd_soc_dai *dai,
277 void *data)
278{
279 dev_set_drvdata(dai->dev, data);
280}
281
282static inline void *snd_soc_dai_get_drvdata(struct snd_soc_dai *dai)
283{
284 return dev_get_drvdata(dai->dev);
Daniel Mackfd23b7d2010-03-19 14:52:55 +0000285}
286
Mark Browna47cbe72008-07-23 14:03:07 +0100287#endif