summaryrefslogtreecommitdiff
path: root/sound/soc/soc-dai.c
blob: 8f3cad8db89a4979a6ecefedb4e0972b73bc91af (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
// SPDX-License-Identifier: GPL-2.0
//
// soc-dai.c
//
// Copyright (C) 2019 Renesas Electronics Corp.
// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
//

#include <sound/soc.h>
#include <sound/soc-dai.h>

/**
 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
 * @dai: DAI
 * @clk_id: DAI specific clock ID
 * @freq: new clock frequency in Hz
 * @dir: new clock direction - input/output.
 *
 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
 */
int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
			   unsigned int freq, int dir)
{
	if (dai->driver->ops->set_sysclk)
		return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);

	return snd_soc_component_set_sysclk(dai->component, clk_id, 0,
					    freq, dir);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);

/**
 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
 * @dai: DAI
 * @div_id: DAI specific clock divider ID
 * @div: new clock divisor.
 *
 * Configures the clock dividers. This is used to derive the best DAI bit and
 * frame clocks from the system or master clock. It's best to set the DAI bit
 * and frame clocks as low as possible to save system power.
 */
int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
			   int div_id, int div)
{
	if (dai->driver->ops->set_clkdiv)
		return dai->driver->ops->set_clkdiv(dai, div_id, div);
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);

/**
 * snd_soc_dai_set_pll - configure DAI PLL.
 * @dai: DAI
 * @pll_id: DAI specific PLL ID
 * @source: DAI specific source for the PLL
 * @freq_in: PLL input clock frequency in Hz
 * @freq_out: requested PLL output clock frequency in Hz
 *
 * Configures and enables PLL to generate output clock based on input clock.
 */
int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
			unsigned int freq_in, unsigned int freq_out)
{
	if (dai->driver->ops->set_pll)
		return dai->driver->ops->set_pll(dai, pll_id, source,
						 freq_in, freq_out);

	return snd_soc_component_set_pll(dai->component, pll_id, source,
					 freq_in, freq_out);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);

/**
 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
 * @dai: DAI
 * @ratio: Ratio of BCLK to Sample rate.
 *
 * Configures the DAI for a preset BCLK to sample rate ratio.
 */
int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
{
	if (dai->driver->ops->set_bclk_ratio)
		return dai->driver->ops->set_bclk_ratio(dai, ratio);
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);

/**
 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
 * @dai: DAI
 * @fmt: SND_SOC_DAIFMT_* format value.
 *
 * Configures the DAI hardware format and clocking.
 */
int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
	if (dai->driver->ops->set_fmt == NULL)
		return -ENOTSUPP;
	return dai->driver->ops->set_fmt(dai, fmt);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);

/**
 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
 * @slots: Number of slots in use.
 * @tx_mask: bitmask representing active TX slots.
 * @rx_mask: bitmask representing active RX slots.
 *
 * Generates the TDM tx and rx slot default masks for DAI.
 */
static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
				       unsigned int *tx_mask,
				       unsigned int *rx_mask)
{
	if (*tx_mask || *rx_mask)
		return 0;

	if (!slots)
		return -EINVAL;

	*tx_mask = (1 << slots) - 1;
	*rx_mask = (1 << slots) - 1;

	return 0;
}

/**
 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
 * @dai: The DAI to configure
 * @tx_mask: bitmask representing active TX slots.
 * @rx_mask: bitmask representing active RX slots.
 * @slots: Number of slots in use.
 * @slot_width: Width in bits for each slot.
 *
 * This function configures the specified DAI for TDM operation. @slot contains
 * the total number of slots of the TDM stream and @slot_with the width of each
 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
 * active slots of the TDM stream for the specified DAI, i.e. which slots the
 * DAI should write to or read from. If a bit is set the corresponding slot is
 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
 * the first slot, bit 1 to the second slot and so on. The first active slot
 * maps to the first channel of the DAI, the second active slot to the second
 * channel and so on.
 *
 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
 * @rx_mask and @slot_width will be ignored.
 *
 * Returns 0 on success, a negative error code otherwise.
 */
int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
			     unsigned int tx_mask, unsigned int rx_mask,
			     int slots, int slot_width)
{
	if (dai->driver->ops->xlate_tdm_slot_mask)
		dai->driver->ops->xlate_tdm_slot_mask(slots,
						      &tx_mask, &rx_mask);
	else
		snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);

	dai->tx_mask = tx_mask;
	dai->rx_mask = rx_mask;

	if (dai->driver->ops->set_tdm_slot)
		return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
						      slots, slot_width);
	else
		return -ENOTSUPP;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);

/**
 * snd_soc_dai_set_channel_map - configure DAI audio channel map
 * @dai: DAI
 * @tx_num: how many TX channels
 * @tx_slot: pointer to an array which imply the TX slot number channel
 *           0~num-1 uses
 * @rx_num: how many RX channels
 * @rx_slot: pointer to an array which imply the RX slot number channel
 *           0~num-1 uses
 *
 * configure the relationship between channel number and TDM slot number.
 */
int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
				unsigned int tx_num, unsigned int *tx_slot,
				unsigned int rx_num, unsigned int *rx_slot)
{
	if (dai->driver->ops->set_channel_map)
		return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
							 rx_num, rx_slot);
	else
		return -ENOTSUPP;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);

/**
 * snd_soc_dai_get_channel_map - Get DAI audio channel map
 * @dai: DAI
 * @tx_num: how many TX channels
 * @tx_slot: pointer to an array which imply the TX slot number channel
 *           0~num-1 uses
 * @rx_num: how many RX channels
 * @rx_slot: pointer to an array which imply the RX slot number channel
 *           0~num-1 uses
 */
int snd_soc_dai_get_channel_map(struct snd_soc_dai *dai,
				unsigned int *tx_num, unsigned int *tx_slot,
				unsigned int *rx_num, unsigned int *rx_slot)
{
	if (dai->driver->ops->get_channel_map)
		return dai->driver->ops->get_channel_map(dai, tx_num, tx_slot,
							 rx_num, rx_slot);
	else
		return -ENOTSUPP;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_get_channel_map);

/**
 * snd_soc_dai_set_tristate - configure DAI system or master clock.
 * @dai: DAI
 * @tristate: tristate enable
 *
 * Tristates the DAI so that others can use it.
 */
int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
{
	if (dai->driver->ops->set_tristate)
		return dai->driver->ops->set_tristate(dai, tristate);
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);

/**
 * snd_soc_dai_digital_mute - configure DAI system or master clock.
 * @dai: DAI
 * @mute: mute enable
 * @direction: stream to mute
 *
 * Mutes the DAI DAC.
 */
int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
			     int direction)
{
	if (dai->driver->ops->mute_stream)
		return dai->driver->ops->mute_stream(dai, mute, direction);
	else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
		 dai->driver->ops->digital_mute)
		return dai->driver->ops->digital_mute(dai, mute);
	else
		return -ENOTSUPP;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);

int snd_soc_dai_hw_params(struct snd_soc_dai *dai,
			  struct snd_pcm_substream *substream,
			  struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	int ret;

	/* perform any topology hw_params fixups before DAI  */
	if (rtd->dai_link->be_hw_params_fixup) {
		ret = rtd->dai_link->be_hw_params_fixup(rtd, params);
		if (ret < 0) {
			dev_err(rtd->dev,
				"ASoC: hw_params topology fixup failed %d\n",
				ret);
			return ret;
		}
	}

	if (dai->driver->ops->hw_params) {
		ret = dai->driver->ops->hw_params(substream, params, dai);
		if (ret < 0) {
			dev_err(dai->dev, "ASoC: can't set %s hw params: %d\n",
				dai->name, ret);
			return ret;
		}
	}

	return 0;
}

void snd_soc_dai_hw_free(struct snd_soc_dai *dai,
			 struct snd_pcm_substream *substream)
{
	if (dai->driver->ops->hw_free)
		dai->driver->ops->hw_free(substream, dai);
}

int snd_soc_dai_startup(struct snd_soc_dai *dai,
			struct snd_pcm_substream *substream)
{
	int ret = 0;

	if (!dai->started[substream->stream] &&
	    dai->driver->ops->startup)
		ret = dai->driver->ops->startup(substream, dai);

	if (ret == 0)
		dai->started[substream->stream] = 1;

	return ret;
}

void snd_soc_dai_shutdown(struct snd_soc_dai *dai,
			 struct snd_pcm_substream *substream)
{
	if (dai->started[substream->stream] &&
	    dai->driver->ops->shutdown)
		dai->driver->ops->shutdown(substream, dai);

	dai->started[substream->stream] = 0;
}

int snd_soc_dai_prepare(struct snd_soc_dai *dai,
			struct snd_pcm_substream *substream)
{
	int ret = 0;

	if (dai->driver->ops->prepare)
		ret = dai->driver->ops->prepare(substream, dai);

	return ret;
}

int snd_soc_dai_trigger(struct snd_soc_dai *dai,
			struct snd_pcm_substream *substream,
			int cmd)
{
	int ret = 0;

	if (dai->driver->ops->trigger)
		ret = dai->driver->ops->trigger(substream, cmd, dai);

	return ret;
}

int snd_soc_dai_bespoke_trigger(struct snd_soc_dai *dai,
				struct snd_pcm_substream *substream,
				int cmd)
{
	int ret = 0;

	if (dai->driver->ops->bespoke_trigger)
		ret = dai->driver->ops->bespoke_trigger(substream, cmd, dai);

	return ret;
}

snd_pcm_sframes_t snd_soc_dai_delay(struct snd_soc_dai *dai,
				    struct snd_pcm_substream *substream)
{
	int delay = 0;

	if (dai->driver->ops->delay)
		delay = dai->driver->ops->delay(substream, dai);

	return delay;
}

int snd_soc_dai_probe(struct snd_soc_dai *dai)
{
	if (dai->driver->probe)
		return dai->driver->probe(dai);
	return 0;
}

int snd_soc_dai_remove(struct snd_soc_dai *dai)
{
	if (dai->driver->remove)
		return dai->driver->remove(dai);
	return 0;
}

int snd_soc_dai_compress_new(struct snd_soc_dai *dai,
			     struct snd_soc_pcm_runtime *rtd, int num)
{
	if (dai->driver->compress_new)
		return dai->driver->compress_new(rtd, num);
	return -ENOTSUPP;
}

/*
 * snd_soc_dai_stream_valid() - check if a DAI supports the given stream
 *
 * Returns true if the DAI supports the indicated stream type.
 */
bool snd_soc_dai_stream_valid(struct snd_soc_dai *dai, int dir)
{
	struct snd_soc_pcm_stream *stream = snd_soc_dai_get_pcm_stream(dai, dir);

	/* If the codec specifies any channels at all, it supports the stream */
	return stream->channels_min;
}