summaryrefslogtreecommitdiffstats
path: root/sound/soc/codecs/cs4341.c
blob: 29d05e32d3417f0879036bac718354a1e33010ff (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
/* SPDX-License-Identifier: GPL-2.0+ */
/*
 *  Cirrus Logic CS4341A ALSA SoC Codec Driver
 *  Author: Alexander Shiyan <shc_work@mail.ru>
 */

#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/regmap.h>
#include <linux/spi/spi.h>

#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>

#define CS4341_REG_MODE1	0x00
#define CS4341_REG_MODE2	0x01
#define CS4341_REG_MIX		0x02
#define CS4341_REG_VOLA		0x03
#define CS4341_REG_VOLB		0x04

#define CS4341_MODE2_DIF	(7 << 4)
#define CS4341_MODE2_DIF_I2S_24	(0 << 4)
#define CS4341_MODE2_DIF_I2S_16	(1 << 4)
#define CS4341_MODE2_DIF_LJ_24	(2 << 4)
#define CS4341_MODE2_DIF_RJ_24	(3 << 4)
#define CS4341_MODE2_DIF_RJ_16	(5 << 4)
#define CS4341_VOLX_MUTE	(1 << 7)

struct cs4341_priv {
	unsigned int		fmt;
	struct regmap		*regmap;
	struct regmap_config	regcfg;
};

static const struct reg_default cs4341_reg_defaults[] = {
	{ CS4341_REG_MODE1,	0x00 },
	{ CS4341_REG_MODE2,	0x82 },
	{ CS4341_REG_MIX,	0x49 },
	{ CS4341_REG_VOLA,	0x80 },
	{ CS4341_REG_VOLB,	0x80 },
};

static int cs4341_set_fmt(struct snd_soc_dai *dai, unsigned int format)
{
	struct snd_soc_component *component = dai->component;
	struct cs4341_priv *cs4341 = snd_soc_component_get_drvdata(component);

	switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBS_CFS:
		break;
	default:
		return -EINVAL;
	}

	switch (format & SND_SOC_DAIFMT_INV_MASK) {
	case SND_SOC_DAIFMT_NB_NF:
		break;
	default:
		return -EINVAL;
	}

	switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
	case SND_SOC_DAIFMT_LEFT_J:
	case SND_SOC_DAIFMT_RIGHT_J:
		cs4341->fmt = format & SND_SOC_DAIFMT_FORMAT_MASK;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static int cs4341_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 cs4341_priv *cs4341 = snd_soc_component_get_drvdata(component);
	unsigned int mode = 0;
	int b24 = 0;

	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S24_LE:
		b24 = 1;
		break;
	case SNDRV_PCM_FORMAT_S16_LE:
		break;
	default:
		dev_err(component->dev, "Unsupported PCM format 0x%08x.\n",
			params_format(params));
		return -EINVAL;
	}

	switch (cs4341->fmt) {
	case SND_SOC_DAIFMT_I2S:
		mode = b24 ? CS4341_MODE2_DIF_I2S_24 : CS4341_MODE2_DIF_I2S_16;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		mode = CS4341_MODE2_DIF_LJ_24;
		break;
	case SND_SOC_DAIFMT_RIGHT_J:
		mode = b24 ? CS4341_MODE2_DIF_RJ_24 : CS4341_MODE2_DIF_RJ_16;
		break;
	default:
		dev_err(component->dev, "Unsupported DAI format 0x%08x.\n",
			cs4341->fmt);
		return -EINVAL;
	}

	return snd_soc_component_update_bits(component, CS4341_REG_MODE2,
					     CS4341_MODE2_DIF, mode);
}

static int cs4341_mute(struct snd_soc_dai *dai, int mute, int direction)
{
	struct snd_soc_component *component = dai->component;
	int ret;

	ret = snd_soc_component_update_bits(component, CS4341_REG_VOLA,
					    CS4341_VOLX_MUTE,
					    mute ? CS4341_VOLX_MUTE : 0);
	if (ret < 0)
		return ret;

	return snd_soc_component_update_bits(component, CS4341_REG_VOLB,
					     CS4341_VOLX_MUTE,
					     mute ? CS4341_VOLX_MUTE : 0);
}

static DECLARE_TLV_DB_SCALE(out_tlv, -9000, 100, 0);

static const char * const deemph[] = {
	"None", "44.1k", "48k", "32k",
};

static const struct soc_enum deemph_enum =
	SOC_ENUM_SINGLE(CS4341_REG_MODE2, 2, 4, deemph);

static const char * const srzc[] = {
	"Immediate", "Zero Cross", "Soft Ramp", "SR on ZC",
};

static const struct soc_enum srzc_enum =
	SOC_ENUM_SINGLE(CS4341_REG_MIX, 5, 4, srzc);


static const struct snd_soc_dapm_widget cs4341_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("HiFi DAC", NULL, SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_OUTPUT("OutA"),
	SND_SOC_DAPM_OUTPUT("OutB"),
};

static const struct snd_soc_dapm_route cs4341_routes[] = {
	{ "OutA", NULL, "HiFi DAC" },
	{ "OutB", NULL, "HiFi DAC" },
	{ "DAC Playback", NULL, "OutA" },
	{ "DAC Playback", NULL, "OutB" },
};

static const struct snd_kcontrol_new cs4341_controls[] = {
	SOC_DOUBLE_R_TLV("Master Playback Volume",
			 CS4341_REG_VOLA, CS4341_REG_VOLB, 0, 90, 1, out_tlv),
	SOC_ENUM("De-Emphasis Control", deemph_enum),
	SOC_ENUM("Soft Ramp Zero Cross Control", srzc_enum),
	SOC_SINGLE("Auto-Mute Switch", CS4341_REG_MODE2, 7, 1, 0),
	SOC_SINGLE("Popguard Transient Switch", CS4341_REG_MODE2, 1, 1, 0),
};

static const struct snd_soc_dai_ops cs4341_dai_ops = {
	.set_fmt	= cs4341_set_fmt,
	.hw_params	= cs4341_hw_params,
	.mute_stream	= cs4341_mute,
	.no_capture_mute = 1,
};

static struct snd_soc_dai_driver cs4341_dai = {
	.name			= "cs4341a-hifi",
	.playback		= {
		.stream_name	= "DAC Playback",
		.channels_min	= 1,
		.channels_max	= 2,
		.rates		= SNDRV_PCM_RATE_8000_96000,
		.formats	= SNDRV_PCM_FMTBIT_S16_LE |
				  SNDRV_PCM_FMTBIT_S24_LE,
	},
	.ops			= &cs4341_dai_ops,
	.symmetric_rate		= 1,
};

static const struct snd_soc_component_driver soc_component_cs4341 = {
	.controls		= cs4341_controls,
	.num_controls		= ARRAY_SIZE(cs4341_controls),
	.dapm_widgets		= cs4341_dapm_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(cs4341_dapm_widgets),
	.dapm_routes		= cs4341_routes,
	.num_dapm_routes	= ARRAY_SIZE(cs4341_routes),
	.idle_bias_on		= 1,
	.use_pmdown_time	= 1,
	.endianness		= 1,
	.non_legacy_dai_naming	= 1,
};

static const struct of_device_id __maybe_unused cs4341_dt_ids[] = {
	{ .compatible = "cirrus,cs4341a", },
	{ }
};
MODULE_DEVICE_TABLE(of, cs4341_dt_ids);

static int cs4341_probe(struct device *dev)
{
	struct cs4341_priv *cs4341 = dev_get_drvdata(dev);
	int i;

	for (i = 0; i < ARRAY_SIZE(cs4341_reg_defaults); i++)
		regmap_write(cs4341->regmap, cs4341_reg_defaults[i].reg,
			     cs4341_reg_defaults[i].def);

	return devm_snd_soc_register_component(dev, &soc_component_cs4341,
					       &cs4341_dai, 1);
}

#if IS_ENABLED(CONFIG_I2C)
static int cs4341_i2c_probe(struct i2c_client *i2c,
			    const struct i2c_device_id *id)
{
	struct cs4341_priv *cs4341;

	cs4341 = devm_kzalloc(&i2c->dev, sizeof(*cs4341), GFP_KERNEL);
	if (!cs4341)
		return -ENOMEM;

	i2c_set_clientdata(i2c, cs4341);

	cs4341->regcfg.reg_bits		= 8;
	cs4341->regcfg.val_bits		= 8;
	cs4341->regcfg.max_register	= CS4341_REG_VOLB;
	cs4341->regcfg.cache_type	= REGCACHE_FLAT;
	cs4341->regcfg.reg_defaults	= cs4341_reg_defaults;
	cs4341->regcfg.num_reg_defaults	= ARRAY_SIZE(cs4341_reg_defaults);
	cs4341->regmap = devm_regmap_init_i2c(i2c, &cs4341->regcfg);
	if (IS_ERR(cs4341->regmap))
		return PTR_ERR(cs4341->regmap);

	return cs4341_probe(&i2c->dev);
}

static const struct i2c_device_id cs4341_i2c_id[] = {
	{ "cs4341", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, cs4341_i2c_id);

static struct i2c_driver cs4341_i2c_driver = {
	.driver = {
		.name = "cs4341-i2c",
		.of_match_table = of_match_ptr(cs4341_dt_ids),
	},
	.probe = cs4341_i2c_probe,
	.id_table = cs4341_i2c_id,
};
#endif

#if defined(CONFIG_SPI_MASTER)
static bool cs4341_reg_readable(struct device *dev, unsigned int reg)
{
	return false;
}

static int cs4341_spi_probe(struct spi_device *spi)
{
	struct cs4341_priv *cs4341;
	int ret;

	cs4341 = devm_kzalloc(&spi->dev, sizeof(*cs4341), GFP_KERNEL);
	if (!cs4341)
		return -ENOMEM;

	if (!spi->bits_per_word)
		spi->bits_per_word = 8;
	if (!spi->max_speed_hz)
		spi->max_speed_hz = 6000000;
	ret = spi_setup(spi);
	if (ret)
		return ret;

	spi_set_drvdata(spi, cs4341);

	cs4341->regcfg.reg_bits		= 16;
	cs4341->regcfg.val_bits		= 8;
	cs4341->regcfg.write_flag_mask	= 0x20;
	cs4341->regcfg.max_register	= CS4341_REG_VOLB;
	cs4341->regcfg.cache_type	= REGCACHE_FLAT;
	cs4341->regcfg.readable_reg	= cs4341_reg_readable;
	cs4341->regcfg.reg_defaults	= cs4341_reg_defaults;
	cs4341->regcfg.num_reg_defaults	= ARRAY_SIZE(cs4341_reg_defaults);
	cs4341->regmap = devm_regmap_init_spi(spi, &cs4341->regcfg);
	if (IS_ERR(cs4341->regmap))
		return PTR_ERR(cs4341->regmap);

	return cs4341_probe(&spi->dev);
}

static const struct spi_device_id cs4341_spi_ids[] = {
	{ "cs4341a" },
	{ }
};
MODULE_DEVICE_TABLE(spi, cs4341_spi_ids);

static struct spi_driver cs4341_spi_driver = {
	.driver = {
		.name = "cs4341-spi",
		.of_match_table = of_match_ptr(cs4341_dt_ids),
	},
	.probe = cs4341_spi_probe,
	.id_table = cs4341_spi_ids,
};
#endif

static int __init cs4341_init(void)
{
	int ret = 0;

#if IS_ENABLED(CONFIG_I2C)
	ret = i2c_add_driver(&cs4341_i2c_driver);
	if (ret)
		return ret;
#endif
#if defined(CONFIG_SPI_MASTER)
	ret = spi_register_driver(&cs4341_spi_driver);
#endif

	return ret;
}
module_init(cs4341_init);

static void __exit cs4341_exit(void)
{
#if IS_ENABLED(CONFIG_I2C)
	i2c_del_driver(&cs4341_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
	spi_unregister_driver(&cs4341_spi_driver);
#endif
}
module_exit(cs4341_exit);

MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");
MODULE_DESCRIPTION("Cirrus Logic CS4341 ALSA SoC Codec Driver");
MODULE_LICENSE("GPL");