summaryrefslogtreecommitdiffstats
path: root/sound/soc/codecs/max98363.c
blob: b5c69bba0e4888fa21e55e0430893196cb5a3a51 (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
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
// SPDX-License-Identifier: GPL-2.0-only
// Copyright (c) 2022, Analog Devices Inc.

#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_registers.h>
#include <linux/soundwire/sdw_type.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>

#include "max98363.h"

static struct reg_default max98363_reg[] = {
	{MAX98363_R2021_ERR_MON_CTRL, 0x0},
	{MAX98363_R2022_SPK_MON_THRESH, 0x0},
	{MAX98363_R2023_SPK_MON_DURATION, 0x0},
	{MAX98363_R2030_TONE_GEN_CFG, 0x0},
	{MAX98363_R203F_TONE_GEN_EN, 0x0},
	{MAX98363_R2040_AMP_VOL, 0x0},
	{MAX98363_R2041_AMP_GAIN, 0x5},
	{MAX98363_R2042_DSP_CFG, 0x0},
};

static bool max98363_readable_register(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case MAX98363_R2001_INTR_RAW:
	case MAX98363_R2003_INTR_STATE:
	case MAX98363_R2005_INTR_FALG:
	case MAX98363_R2007_INTR_EN:
	case MAX98363_R2009_INTR_CLR:
	case MAX98363_R2021_ERR_MON_CTRL ... MAX98363_R2023_SPK_MON_DURATION:
	case MAX98363_R2030_TONE_GEN_CFG:
	case MAX98363_R203F_TONE_GEN_EN:
	case MAX98363_R2040_AMP_VOL:
	case MAX98363_R2041_AMP_GAIN:
	case MAX98363_R2042_DSP_CFG:
	case MAX98363_R21FF_REV_ID:
		return true;
	default:
		return false;
	}
};

static bool max98363_volatile_reg(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case MAX98363_R2001_INTR_RAW:
	case MAX98363_R2003_INTR_STATE:
	case MAX98363_R2005_INTR_FALG:
	case MAX98363_R2007_INTR_EN:
	case MAX98363_R2009_INTR_CLR:
	case MAX98363_R21FF_REV_ID:
		return true;
	default:
		return false;
	}
}

static const struct regmap_config max98363_sdw_regmap = {
	.reg_bits = 32,
	.val_bits = 8,
	.max_register = MAX98363_R21FF_REV_ID,
	.reg_defaults  = max98363_reg,
	.num_reg_defaults = ARRAY_SIZE(max98363_reg),
	.readable_reg = max98363_readable_register,
	.volatile_reg = max98363_volatile_reg,
	.cache_type = REGCACHE_RBTREE,
	.use_single_read = true,
	.use_single_write = true,
};

static int max98363_suspend(struct device *dev)
{
	struct max98363_priv *max98363 = dev_get_drvdata(dev);

	regcache_cache_only(max98363->regmap, true);
	regcache_mark_dirty(max98363->regmap);

	return 0;
}

#define MAX98363_PROBE_TIMEOUT 5000

static int max98363_resume(struct device *dev)
{
	struct sdw_slave *slave = dev_to_sdw_dev(dev);
	struct max98363_priv *max98363 = dev_get_drvdata(dev);
	unsigned long time;

	if (!max98363->first_hw_init)
		return 0;

	if (!slave->unattach_request)
		goto regmap_sync;

	time = wait_for_completion_timeout(&slave->initialization_complete,
					   msecs_to_jiffies(MAX98363_PROBE_TIMEOUT));
	if (!time) {
		dev_err(dev, "Initialization not complete, timed out\n");
		return -ETIMEDOUT;
	}

regmap_sync:

	slave->unattach_request = 0;
	regcache_cache_only(max98363->regmap, false);
	regcache_sync(max98363->regmap);

	return 0;
}

static DEFINE_RUNTIME_DEV_PM_OPS(max98363_pm, max98363_suspend, max98363_resume, NULL);

static int max98363_read_prop(struct sdw_slave *slave)
{
	struct sdw_slave_prop *prop = &slave->prop;
	int nval, i;
	u32 bit;
	unsigned long addr;
	struct sdw_dpn_prop *dpn;

	prop->scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY;

	/* BITMAP: 00000010  Dataport 1 is active */
	prop->sink_ports = BIT(1);
	prop->paging_support = true;
	prop->clk_stop_timeout = 20;
	prop->simple_clk_stop_capable = true;
	prop->clock_reg_supported = true;

	nval = hweight32(prop->sink_ports);
	prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
					   sizeof(*prop->sink_dpn_prop),
					   GFP_KERNEL);
	if (!prop->sink_dpn_prop)
		return -ENOMEM;

	i = 0;
	dpn = prop->sink_dpn_prop;
	addr = prop->sink_ports;
	for_each_set_bit(bit, &addr, 32) {
		dpn[i].num = bit;
		dpn[i].type = SDW_DPN_FULL;
		dpn[i].simple_ch_prep_sm = true;
		dpn[i].ch_prep_timeout = 10;
		i++;
	}

	return 0;
}

static int max98363_io_init(struct sdw_slave *slave)
{
	struct device *dev = &slave->dev;
	struct max98363_priv *max98363 = dev_get_drvdata(dev);
	int ret, reg;

	if (max98363->first_hw_init) {
		regcache_cache_only(max98363->regmap, false);
		regcache_cache_bypass(max98363->regmap, true);
	}

	/*
	 * PM runtime is only enabled when a Slave reports as Attached
	 */
	if (!max98363->first_hw_init) {
		/* set autosuspend parameters */
		pm_runtime_set_autosuspend_delay(dev, 3000);
		pm_runtime_use_autosuspend(dev);

		/* update count of parent 'active' children */
		pm_runtime_set_active(dev);

		/* make sure the device does not suspend immediately */
		pm_runtime_mark_last_busy(dev);

		pm_runtime_enable(dev);
	}

	pm_runtime_get_noresume(dev);

	ret = regmap_read(max98363->regmap, MAX98363_R21FF_REV_ID, &reg);
	if (!ret) {
		dev_info(dev, "Revision ID: %X\n", reg);
		return ret;
	}

	if (max98363->first_hw_init) {
		regcache_cache_bypass(max98363->regmap, false);
		regcache_mark_dirty(max98363->regmap);
	}

	max98363->first_hw_init = true;
	max98363->hw_init = true;

	pm_runtime_mark_last_busy(dev);
	pm_runtime_put_autosuspend(dev);

	return 0;
}

#define MAX98363_RATES SNDRV_PCM_RATE_8000_192000
#define MAX98363_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE)

static int max98363_sdw_dai_hw_params(struct snd_pcm_substream *substream,
				      struct snd_pcm_hw_params *params,
				      struct snd_soc_dai *dai)
{
	struct snd_soc_component *component = dai->component;
	struct max98363_priv *max98363 =
		snd_soc_component_get_drvdata(component);

	struct sdw_stream_config stream_config;
	struct sdw_port_config port_config;
	enum sdw_data_direction direction;
	struct sdw_stream_runtime *stream;
	struct snd_pcm_runtime *runtime = substream->runtime;

	int ret;

	stream = snd_soc_dai_get_dma_data(dai, substream);

	if (!stream)
		return -EINVAL;

	if (!max98363->slave)
		return -EINVAL;

	if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
		return -EINVAL;

	direction = SDW_DATA_DIR_RX;
	port_config.num = 1;

	stream_config.frame_rate = params_rate(params);
	stream_config.bps = snd_pcm_format_width(params_format(params));
	stream_config.direction = direction;
	stream_config.ch_count = 1;

	if (stream_config.ch_count > runtime->hw.channels_max) {
		stream_config.ch_count = runtime->hw.channels_max;
		dev_info(dai->dev, "Number of channels: %d (requested: %d)\n",
			 stream_config.ch_count, params_channels(params));
	}
	port_config.ch_mask = GENMASK((int)stream_config.ch_count - 1, 0);

	ret = sdw_stream_add_slave(max98363->slave, &stream_config,
				   &port_config, 1, stream);
	if (ret) {
		dev_err(dai->dev, "Unable to configure port\n");
		return ret;
	}

	dev_dbg(component->dev, "Format supported %d", params_format(params));

	return 0;
}

static int max98363_pcm_hw_free(struct snd_pcm_substream *substream,
				struct snd_soc_dai *dai)
{
	struct snd_soc_component *component = dai->component;
	struct max98363_priv *max98363 =
		snd_soc_component_get_drvdata(component);
	struct sdw_stream_runtime *stream =
		snd_soc_dai_get_dma_data(dai, substream);

	if (!max98363->slave)
		return -EINVAL;

	sdw_stream_remove_slave(max98363->slave, stream);

	return 0;
}

static int max98363_set_sdw_stream(struct snd_soc_dai *dai,
				   void *sdw_stream, int direction)
{
	snd_soc_dai_dma_data_set(dai, direction, sdw_stream);

	return 0;
}

static const struct snd_soc_dai_ops max98363_dai_sdw_ops = {
	.hw_params = max98363_sdw_dai_hw_params,
	.hw_free = max98363_pcm_hw_free,
	.set_stream = max98363_set_sdw_stream,
};

static struct snd_soc_dai_driver max98363_dai[] = {
	{
		.name = "max98363-aif1",
		.playback = {
			.stream_name = "HiFi Playback",
			.channels_min = 1,
			.channels_max = 1,
			.rates = MAX98363_RATES,
			.formats = MAX98363_FORMATS,
		},
		.ops = &max98363_dai_sdw_ops,
	}
};

static int max98363_update_status(struct sdw_slave *slave,
				  enum sdw_slave_status status)
{
	struct max98363_priv *max98363 = dev_get_drvdata(&slave->dev);

	if (status == SDW_SLAVE_UNATTACHED)
		max98363->hw_init = false;

	/*
	 * Perform initialization only if slave status is SDW_SLAVE_ATTACHED
	 */
	if (max98363->hw_init || status != SDW_SLAVE_ATTACHED)
		return 0;

	/* perform I/O transfers required for Slave initialization */
	return max98363_io_init(slave);
}

static struct sdw_slave_ops max98363_slave_ops = {
	.read_prop = max98363_read_prop,
	.update_status = max98363_update_status,
};

static DECLARE_TLV_DB_SCALE(max98363_digital_tlv, -6350, 50, 1);
static const DECLARE_TLV_DB_RANGE(max98363_spk_tlv,
	0, 5, TLV_DB_SCALE_ITEM(-300, 300, 0),
);

static const char * const max98363_tone_cfg_text[] = {
	"Reserved", "0", "+FS/2", "-FS/2", "1KHz",
	"12KHz", "8KHz", "6KHz", "4KHz", "3KHz",
	"2KHz",	"1.5KHz", "Reserved", "500Hz", "250Hz"
};

static SOC_ENUM_SINGLE_DECL(max98363_tone_cfg_enum,
			    MAX98363_R2030_TONE_GEN_CFG, 0,
			    max98363_tone_cfg_text);

static const char * const max98363_spkmon_duration_text[] = {
	"8ms", "20ms", "40ms", "60ms",
	"80ms", "160ms", "240ms", "320ms",
	"400ms", "480ms", "560ms", "640ms",
	"720ms", "800ms", "880ms", "960ms"
};

static SOC_ENUM_SINGLE_DECL(max98363_spkmon_duration_enum,
			    MAX98363_R2023_SPK_MON_DURATION, 0,
			    max98363_spkmon_duration_text);

static const struct snd_kcontrol_new max98363_snd_controls[] = {
	SOC_SINGLE_TLV("Digital Volume", MAX98363_R2040_AMP_VOL,
		       0, 0x7F, 1, max98363_digital_tlv),
	SOC_SINGLE_TLV("Speaker Volume", MAX98363_R2041_AMP_GAIN,
		       0, 10, 0, max98363_spk_tlv),
	SOC_SINGLE("Tone Generator Switch", MAX98363_R203F_TONE_GEN_EN,
		   0, 1, 0),
	SOC_ENUM("Tone Config", max98363_tone_cfg_enum),
	SOC_SINGLE("Ramp Switch", MAX98363_R2042_DSP_CFG,
		   MAX98363_AMP_DSP_CFG_RMP_SHIFT, 1, 0),
	SOC_SINGLE("CLK Monitor Switch", MAX98363_R2021_ERR_MON_CTRL,
		   MAX98363_CLOCK_MON_SHIFT, 1, 0),
	SOC_SINGLE("SPKMON Monitor Switch", MAX98363_R2021_ERR_MON_CTRL,
		   MAX98363_SPKMON_SHIFT, 1, 0),
	SOC_SINGLE("SPKMON Thresh", MAX98363_R2022_SPK_MON_THRESH, 0, 0xFF, 0),
	SOC_ENUM("SPKMON Duration", max98363_spkmon_duration_enum),
};

static const struct snd_soc_dapm_widget max98363_dapm_widgets[] = {
	SND_SOC_DAPM_AIF_IN("AIFIN", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_OUTPUT("BE_OUT"),
};

static const struct snd_soc_dapm_route max98363_audio_map[] = {
	/* Plabyack */
	{"BE_OUT", NULL, "AIFIN"},
};

static const struct snd_soc_component_driver soc_codec_dev_max98363 = {
	.controls		= max98363_snd_controls,
	.num_controls		= ARRAY_SIZE(max98363_snd_controls),
	.dapm_widgets		= max98363_dapm_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(max98363_dapm_widgets),
	.dapm_routes		= max98363_audio_map,
	.num_dapm_routes	= ARRAY_SIZE(max98363_audio_map),
	.use_pmdown_time	= 1,
	.endianness		= 1,
};

static int max98363_init(struct sdw_slave *slave, struct regmap *regmap)
{
	struct max98363_priv *max98363;
	int ret;
	struct device *dev = &slave->dev;

	/*  Allocate and assign private driver data structure  */
	max98363 = devm_kzalloc(dev, sizeof(*max98363), GFP_KERNEL);
	if (!max98363)
		return -ENOMEM;

	dev_set_drvdata(dev, max98363);
	max98363->regmap = regmap;
	max98363->slave = slave;

	max98363->hw_init = false;
	max98363->first_hw_init = false;

	/* codec registration  */
	ret = devm_snd_soc_register_component(dev, &soc_codec_dev_max98363,
					      max98363_dai,
					      ARRAY_SIZE(max98363_dai));
	if (ret < 0)
		dev_err(dev, "Failed to register codec: %d\n", ret);

	return ret;
}

static int max98363_sdw_probe(struct sdw_slave *slave,
			      const struct sdw_device_id *id)
{
	struct regmap *regmap;

	/* Regmap Initialization */
	regmap = devm_regmap_init_sdw(slave, &max98363_sdw_regmap);
	if (IS_ERR(regmap))
		return PTR_ERR(regmap);

	return max98363_init(slave, regmap);
}

static const struct sdw_device_id max98363_id[] = {
	SDW_SLAVE_ENTRY(0x019F, 0x8363, 0),
	{},
};
MODULE_DEVICE_TABLE(sdw, max98363_id);

static struct sdw_driver max98363_sdw_driver = {
	.driver = {
		.name = "max98363",
		.pm = pm_ptr(&max98363_pm),
	},
	.probe = max98363_sdw_probe,
	.ops = &max98363_slave_ops,
	.id_table = max98363_id,
};

module_sdw_driver(max98363_sdw_driver);

MODULE_DESCRIPTION("ASoC MAX98363 driver SDW");
MODULE_AUTHOR("Ryan Lee <ryans.lee@analog.com>");
MODULE_LICENSE("GPL");