summaryrefslogtreecommitdiff
path: root/sound/soc/codecs/cs4349.c
blob: 0a749c79ef579bdd6bcf9688d6a24f784cfdc6db (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
/*
 * cs4349.c  --  CS4349 ALSA Soc Audio driver
 *
 * Copyright 2015 Cirrus Logic, Inc.
 *
 * Authors: Tim Howe <Tim.Howe@cirrus.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include "cs4349.h"


static const struct reg_default cs4349_reg_defaults[] = {
	{ 2, 0x00 },	/* r02	- Mode Control */
	{ 3, 0x09 },	/* r03	- Volume, Mixing and Inversion Control */
	{ 4, 0x81 },	/* r04	- Mute Control */
	{ 5, 0x00 },	/* r05	- Channel A Volume Control */
	{ 6, 0x00 },	/* r06	- Channel B Volume Control */
	{ 7, 0xB1 },	/* r07	- Ramp and Filter Control */
	{ 8, 0x1C },	/* r08	- Misc. Control */
};

/* Private data for the CS4349 */
struct  cs4349_private {
	struct regmap			*regmap;
	struct gpio_desc		*reset_gpio;
	unsigned int			mode;
	int				rate;
};

static bool cs4349_readable_register(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case CS4349_CHIPID ... CS4349_MISC:
		return true;
	default:
		return false;
	}
}

static bool cs4349_writeable_register(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case CS4349_MODE ...  CS4349_MISC:
		return true;
	default:
		return false;
	}
}

static int cs4349_set_dai_fmt(struct snd_soc_dai *codec_dai,
			      unsigned int format)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	struct cs4349_private *cs4349 = snd_soc_codec_get_drvdata(codec);
	unsigned int fmt;

	fmt = format & SND_SOC_DAIFMT_FORMAT_MASK;

	switch (fmt) {
	case SND_SOC_DAIFMT_I2S:
	case SND_SOC_DAIFMT_LEFT_J:
	case SND_SOC_DAIFMT_RIGHT_J:
		cs4349->mode = format & SND_SOC_DAIFMT_FORMAT_MASK;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static int cs4349_pcm_hw_params(struct snd_pcm_substream *substream,
			    struct snd_pcm_hw_params *params,
			    struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct cs4349_private *cs4349 = snd_soc_codec_get_drvdata(codec);
	int fmt, ret;

	cs4349->rate = params_rate(params);

	switch (cs4349->mode) {
	case SND_SOC_DAIFMT_I2S:
		fmt = DIF_I2S;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		fmt = DIF_LEFT_JST;
		break;
	case SND_SOC_DAIFMT_RIGHT_J:
		switch (params_width(params)) {
		case 16:
			fmt = DIF_RGHT_JST16;
			break;
		case 24:
			fmt = DIF_RGHT_JST24;
			break;
		default:
			return -EINVAL;
		}
		break;
	default:
		return -EINVAL;
	}

	ret = snd_soc_update_bits(codec, CS4349_MODE, DIF_MASK,
				  MODE_FORMAT(fmt));
	if (ret < 0)
		return ret;

	return 0;
}

static int cs4349_digital_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_codec *codec = dai->codec;
	int reg;

	reg = 0;
	if (mute)
		reg = MUTE_AB_MASK;

	return snd_soc_update_bits(codec, CS4349_MUTE, MUTE_AB_MASK, reg);
}

static DECLARE_TLV_DB_SCALE(dig_tlv, -12750, 50, 0);

static const char * const chan_mix_texts[] = {
	"Mute", "MuteA", "MuteA SwapB", "MuteA MonoB", "SwapA MuteB",
	"BothR", "Swap", "SwapA MonoB", "MuteB", "Normal", "BothL",
	"MonoB", "MonoA MuteB", "MonoA", "MonoA SwapB", "Mono",
	/*Normal == Channel A = Left, Channel B = Right*/
};

static const char * const fm_texts[] = {
	"Auto", "Single", "Double", "Quad",
};

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

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

static int deemph_values[] = {
	0, 4, 8, 12,
};

static int softr_zeroc_values[] = {
	0, 64, 128, 192,
};

static const struct soc_enum chan_mix_enum =
	SOC_ENUM_SINGLE(CS4349_VMI, 0,
			ARRAY_SIZE(chan_mix_texts),
			chan_mix_texts);

static const struct soc_enum fm_mode_enum =
	SOC_ENUM_SINGLE(CS4349_MODE, 0,
			ARRAY_SIZE(fm_texts),
			fm_texts);

static SOC_VALUE_ENUM_SINGLE_DECL(deemph_enum, CS4349_MODE, 0, DEM_MASK,
				deemph_texts, deemph_values);

static SOC_VALUE_ENUM_SINGLE_DECL(softr_zeroc_enum, CS4349_RMPFLT, 0,
				SR_ZC_MASK, softr_zeroc_texts,
				softr_zeroc_values);

static const struct snd_kcontrol_new cs4349_snd_controls[] = {
	SOC_DOUBLE_R_TLV("Master Playback Volume",
			 CS4349_VOLA, CS4349_VOLB, 0, 0xFF, 1, dig_tlv),
	SOC_ENUM("Functional Mode", fm_mode_enum),
	SOC_ENUM("De-Emphasis Control", deemph_enum),
	SOC_ENUM("Soft Ramp Zero Cross Control", softr_zeroc_enum),
	SOC_ENUM("Channel Mixer", chan_mix_enum),
	SOC_SINGLE("VolA = VolB Switch", CS4349_VMI, 7, 1, 0),
	SOC_SINGLE("InvertA Switch", CS4349_VMI, 6, 1, 0),
	SOC_SINGLE("InvertB Switch", CS4349_VMI, 5, 1, 0),
	SOC_SINGLE("Auto-Mute Switch", CS4349_MUTE, 7, 1, 0),
	SOC_SINGLE("MUTEC A = B Switch", CS4349_MUTE, 5, 1, 0),
	SOC_SINGLE("Soft Ramp Up Switch", CS4349_RMPFLT, 5, 1, 0),
	SOC_SINGLE("Soft Ramp Down Switch", CS4349_RMPFLT, 4, 1, 0),
	SOC_SINGLE("Slow Roll Off Filter Switch", CS4349_RMPFLT, 2, 1, 0),
	SOC_SINGLE("Freeze Switch", CS4349_MISC, 5, 1, 0),
	SOC_SINGLE("Popguard Switch", CS4349_MISC, 4, 1, 0),
};

static const struct snd_soc_dapm_widget cs4349_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("HiFi DAC", NULL, SND_SOC_NOPM, 0, 0),

	SND_SOC_DAPM_OUTPUT("OutputA"),
	SND_SOC_DAPM_OUTPUT("OutputB"),
};

static const struct snd_soc_dapm_route cs4349_routes[] = {
	{"DAC Playback", NULL, "OutputA"},
	{"DAC Playback", NULL, "OutputB"},

	{"OutputA", NULL, "HiFi DAC"},
	{"OutputB", NULL, "HiFi DAC"},
};

#define CS4349_PCM_FORMATS (SNDRV_PCM_FMTBIT_S8  | \
			SNDRV_PCM_FMTBIT_S16_LE  | SNDRV_PCM_FMTBIT_S16_BE  | \
			SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
			SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
			SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | \
			SNDRV_PCM_FMTBIT_S24_LE  | SNDRV_PCM_FMTBIT_S24_BE  | \
			SNDRV_PCM_FMTBIT_S32_LE)

#define CS4349_PCM_RATES SNDRV_PCM_RATE_8000_192000

static const struct snd_soc_dai_ops cs4349_dai_ops = {
	.hw_params	= cs4349_pcm_hw_params,
	.set_fmt	= cs4349_set_dai_fmt,
	.digital_mute	= cs4349_digital_mute,
};

static struct snd_soc_dai_driver cs4349_dai = {
	.name = "cs4349_hifi",
	.playback = {
		.stream_name	= "DAC Playback",
		.channels_min	= 1,
		.channels_max	= 2,
		.rates		= CS4349_PCM_RATES,
		.formats	= CS4349_PCM_FORMATS,
	},
	.ops = &cs4349_dai_ops,
	.symmetric_rates = 1,
};

static const struct snd_soc_codec_driver soc_codec_dev_cs4349 = {
	.component_driver = {
		.controls		= cs4349_snd_controls,
		.num_controls		= ARRAY_SIZE(cs4349_snd_controls),
		.dapm_widgets		= cs4349_dapm_widgets,
		.num_dapm_widgets	= ARRAY_SIZE(cs4349_dapm_widgets),
		.dapm_routes		= cs4349_routes,
		.num_dapm_routes	= ARRAY_SIZE(cs4349_routes),
	},
};

static const struct regmap_config cs4349_regmap = {
	.reg_bits		= 8,
	.val_bits		= 8,

	.max_register		= CS4349_MISC,
	.reg_defaults		= cs4349_reg_defaults,
	.num_reg_defaults	= ARRAY_SIZE(cs4349_reg_defaults),
	.readable_reg		= cs4349_readable_register,
	.writeable_reg		= cs4349_writeable_register,
	.cache_type		= REGCACHE_RBTREE,
};

static int cs4349_i2c_probe(struct i2c_client *client,
				      const struct i2c_device_id *id)
{
	struct cs4349_private *cs4349;
	int ret;

	cs4349 = devm_kzalloc(&client->dev, sizeof(*cs4349), GFP_KERNEL);
	if (!cs4349)
		return -ENOMEM;

	cs4349->regmap = devm_regmap_init_i2c(client, &cs4349_regmap);
	if (IS_ERR(cs4349->regmap)) {
		ret = PTR_ERR(cs4349->regmap);
		dev_err(&client->dev, "regmap_init() failed: %d\n", ret);
		return ret;
	}

	/* Reset the Device */
	cs4349->reset_gpio = devm_gpiod_get_optional(&client->dev,
		"reset", GPIOD_OUT_LOW);
	if (IS_ERR(cs4349->reset_gpio))
		return PTR_ERR(cs4349->reset_gpio);

	gpiod_set_value_cansleep(cs4349->reset_gpio, 1);

	i2c_set_clientdata(client, cs4349);

	return snd_soc_register_codec(&client->dev, &soc_codec_dev_cs4349,
		&cs4349_dai, 1);
}

static int cs4349_i2c_remove(struct i2c_client *client)
{
	struct cs4349_private *cs4349 = i2c_get_clientdata(client);

	snd_soc_unregister_codec(&client->dev);

	/* Hold down reset */
	gpiod_set_value_cansleep(cs4349->reset_gpio, 0);

	return 0;
}

#ifdef CONFIG_PM
static int cs4349_runtime_suspend(struct device *dev)
{
	struct cs4349_private *cs4349 = dev_get_drvdata(dev);
	int ret;

	ret = regmap_update_bits(cs4349->regmap, CS4349_MISC, PWR_DWN, PWR_DWN);
	if (ret < 0)
		return ret;

	regcache_cache_only(cs4349->regmap, true);

	/* Hold down reset */
	gpiod_set_value_cansleep(cs4349->reset_gpio, 0);

	return 0;
}

static int cs4349_runtime_resume(struct device *dev)
{
	struct cs4349_private *cs4349 = dev_get_drvdata(dev);
	int ret;

	ret = regmap_update_bits(cs4349->regmap, CS4349_MISC, PWR_DWN, 0);
	if (ret < 0)
		return ret;

	gpiod_set_value_cansleep(cs4349->reset_gpio, 1);

	regcache_cache_only(cs4349->regmap, false);
	regcache_sync(cs4349->regmap);

	return 0;
}
#endif

static const struct dev_pm_ops cs4349_runtime_pm = {
	SET_RUNTIME_PM_OPS(cs4349_runtime_suspend, cs4349_runtime_resume,
			   NULL)
};

static const struct of_device_id cs4349_of_match[] = {
	{ .compatible = "cirrus,cs4349", },
	{},
};

MODULE_DEVICE_TABLE(of, cs4349_of_match);

static const struct i2c_device_id cs4349_i2c_id[] = {
	{"cs4349", 0},
	{}
};

MODULE_DEVICE_TABLE(i2c, cs4349_i2c_id);

static struct i2c_driver cs4349_i2c_driver = {
	.driver = {
		.name		= "cs4349",
		.of_match_table	= cs4349_of_match,
	},
	.id_table	= cs4349_i2c_id,
	.probe		= cs4349_i2c_probe,
	.remove		= cs4349_i2c_remove,
};

module_i2c_driver(cs4349_i2c_driver);

MODULE_AUTHOR("Tim Howe <tim.howe@cirrus.com>");
MODULE_DESCRIPTION("Cirrus Logic CS4349 ALSA SoC Codec Driver");
MODULE_LICENSE("GPL");