summaryrefslogtreecommitdiff
path: root/sound/soc/codecs/sta529.c
blob: d90e5512a73175135fa8983203f22ef6f0a8ce05 (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
/*
 * ASoC codec driver for spear platform
 *
 * sound/soc/codecs/sta529.c -- spear ALSA Soc codec driver
 *
 * Copyright (C) 2012 ST Microelectronics
 * Rajeev Kumar <rajeevkumar.linux@gmail.com>
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2. This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#include <linux/clk.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/pm.h>
#include <linux/regmap.h>
#include <linux/slab.h>

#include <sound/core.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>

/* STA529 Register offsets */
#define	 STA529_FFXCFG0		0x00
#define	 STA529_FFXCFG1		0x01
#define	 STA529_MVOL		0x02
#define	 STA529_LVOL		0x03
#define	 STA529_RVOL		0x04
#define	 STA529_TTF0		0x05
#define	 STA529_TTF1		0x06
#define	 STA529_TTP0		0x07
#define	 STA529_TTP1		0x08
#define	 STA529_S2PCFG0		0x0A
#define	 STA529_S2PCFG1		0x0B
#define	 STA529_P2SCFG0		0x0C
#define	 STA529_P2SCFG1		0x0D
#define	 STA529_PLLCFG0		0x14
#define	 STA529_PLLCFG1		0x15
#define	 STA529_PLLCFG2		0x16
#define	 STA529_PLLCFG3		0x17
#define	 STA529_PLLPFE		0x18
#define	 STA529_PLLST		0x19
#define	 STA529_ADCCFG		0x1E /*mic_select*/
#define	 STA529_CKOCFG		0x1F
#define	 STA529_MISC		0x20
#define	 STA529_PADST0		0x21
#define	 STA529_PADST1		0x22
#define	 STA529_FFXST		0x23
#define	 STA529_PWMIN1		0x2D
#define	 STA529_PWMIN2		0x2E
#define	 STA529_POWST		0x32

#define STA529_MAX_REGISTER	0x32

#define STA529_RATES		(SNDRV_PCM_RATE_8000 | \
				SNDRV_PCM_RATE_11025 | \
				SNDRV_PCM_RATE_16000 | \
				SNDRV_PCM_RATE_22050 | \
				SNDRV_PCM_RATE_32000 | \
				SNDRV_PCM_RATE_44100 | \
				SNDRV_PCM_RATE_48000)

#define STA529_FORMAT		(SNDRV_PCM_FMTBIT_S16_LE | \
				SNDRV_PCM_FMTBIT_S24_LE | \
				SNDRV_PCM_FMTBIT_S32_LE)
#define	S2PC_VALUE		0x98
#define CLOCK_OUT		0x60
#define DATA_FORMAT_MSK		0x0E
#define LEFT_J_DATA_FORMAT	0x00
#define I2S_DATA_FORMAT		0x02
#define RIGHT_J_DATA_FORMAT	0x04
#define CODEC_MUTE_VAL		0x80

#define POWER_CNTLMSAK		0x40
#define POWER_STDBY		0x40
#define FFX_MASK		0x80
#define FFX_OFF			0x80
#define POWER_UP		0x00
#define FFX_CLK_ENB		0x01
#define FFX_CLK_DIS		0x00
#define FFX_CLK_MSK		0x01
#define PLAY_FREQ_RANGE_MSK	0x70
#define CAP_FREQ_RANGE_MSK	0x0C
#define PDATA_LEN_MSK		0xC0
#define BCLK_TO_FS_MSK		0x30
#define AUDIO_MUTE_MSK		0x80

static const struct reg_default sta529_reg_defaults[] = {
	{ 0,  0x35 },     /* R0   - FFX Configuration reg 0 */
	{ 1,  0xc8 },     /* R1   - FFX Configuration reg 1 */
	{ 2,  0x50 },     /* R2   - Master Volume */
	{ 3,  0x00 },     /* R3   - Left Volume */
	{ 4,  0x00 },     /* R4  -  Right Volume */
	{ 10, 0xb2 },     /* R10  - S2P Config Reg 0 */
	{ 11, 0x41 },     /* R11  - S2P Config Reg 1 */
	{ 12, 0x92 },     /* R12  - P2S Config Reg 0 */
	{ 13, 0x41 },     /* R13  - P2S Config Reg 1 */
	{ 30, 0xd2 },     /* R30  - ADC Config Reg */
	{ 31, 0x40 },     /* R31  - clock Out Reg */
	{ 32, 0x21 },     /* R32  - Misc Register */
};

struct sta529 {
	struct regmap *regmap;
};

static bool sta529_readable(struct device *dev, unsigned int reg)
{
	switch (reg) {

	case STA529_FFXCFG0:
	case STA529_FFXCFG1:
	case STA529_MVOL:
	case STA529_LVOL:
	case STA529_RVOL:
	case STA529_S2PCFG0:
	case STA529_S2PCFG1:
	case STA529_P2SCFG0:
	case STA529_P2SCFG1:
	case STA529_ADCCFG:
	case STA529_CKOCFG:
	case STA529_MISC:
		return true;
	default:
		return false;
	}
}


static const char *pwm_mode_text[] = { "Binary", "Headphone", "Ternary",
	"Phase-shift"};

static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -9150, 50, 0);
static const DECLARE_TLV_DB_SCALE(master_vol_tlv, -12750, 50, 0);
static SOC_ENUM_SINGLE_DECL(pwm_src, STA529_FFXCFG1, 4, pwm_mode_text);

static const struct snd_kcontrol_new sta529_snd_controls[] = {
	SOC_DOUBLE_R_TLV("Digital Playback Volume", STA529_LVOL, STA529_RVOL, 0,
			127, 0, out_gain_tlv),
	SOC_SINGLE_TLV("Master Playback Volume", STA529_MVOL, 0, 127, 1,
			master_vol_tlv),
	SOC_ENUM("PWM Select", pwm_src),
};

static int sta529_set_bias_level(struct snd_soc_component *component, enum
		snd_soc_bias_level level)
{
	struct sta529 *sta529 = snd_soc_component_get_drvdata(component);

	switch (level) {
	case SND_SOC_BIAS_ON:
	case SND_SOC_BIAS_PREPARE:
		snd_soc_component_update_bits(component, STA529_FFXCFG0, POWER_CNTLMSAK,
				POWER_UP);
		snd_soc_component_update_bits(component, STA529_MISC,	FFX_CLK_MSK,
				FFX_CLK_ENB);
		break;
	case SND_SOC_BIAS_STANDBY:
		if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF)
			regcache_sync(sta529->regmap);
		snd_soc_component_update_bits(component, STA529_FFXCFG0,
					POWER_CNTLMSAK, POWER_STDBY);
		/* Making FFX output to zero */
		snd_soc_component_update_bits(component, STA529_FFXCFG0, FFX_MASK,
				FFX_OFF);
		snd_soc_component_update_bits(component, STA529_MISC, FFX_CLK_MSK,
				FFX_CLK_DIS);
		break;
	case SND_SOC_BIAS_OFF:
		break;
	}

	return 0;

}

static int sta529_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;
	int pdata, play_freq_val, record_freq_val;
	int bclk_to_fs_ratio;

	switch (params_width(params)) {
	case 16:
		pdata = 1;
		bclk_to_fs_ratio = 0;
		break;
	case 24:
		pdata = 2;
		bclk_to_fs_ratio = 1;
		break;
	case 32:
		pdata = 3;
		bclk_to_fs_ratio = 2;
		break;
	default:
		dev_err(component->dev, "Unsupported format\n");
		return -EINVAL;
	}

	switch (params_rate(params)) {
	case 8000:
	case 11025:
		play_freq_val = 0;
		record_freq_val = 2;
		break;
	case 16000:
	case 22050:
		play_freq_val = 1;
		record_freq_val = 0;
		break;

	case 32000:
	case 44100:
	case 48000:
		play_freq_val = 2;
		record_freq_val = 0;
		break;
	default:
		dev_err(component->dev, "Unsupported rate\n");
		return -EINVAL;
	}

	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		snd_soc_component_update_bits(component, STA529_S2PCFG1, PDATA_LEN_MSK,
				pdata << 6);
		snd_soc_component_update_bits(component, STA529_S2PCFG1, BCLK_TO_FS_MSK,
				bclk_to_fs_ratio << 4);
		snd_soc_component_update_bits(component, STA529_MISC, PLAY_FREQ_RANGE_MSK,
				play_freq_val << 4);
	} else {
		snd_soc_component_update_bits(component, STA529_P2SCFG1, PDATA_LEN_MSK,
				pdata << 6);
		snd_soc_component_update_bits(component, STA529_P2SCFG1, BCLK_TO_FS_MSK,
				bclk_to_fs_ratio << 4);
		snd_soc_component_update_bits(component, STA529_MISC, CAP_FREQ_RANGE_MSK,
				record_freq_val << 2);
	}

	return 0;
}

static int sta529_mute(struct snd_soc_dai *dai, int mute, int direction)
{
	u8 val = 0;

	if (mute)
		val |= CODEC_MUTE_VAL;

	snd_soc_component_update_bits(dai->component, STA529_FFXCFG0, AUDIO_MUTE_MSK, val);

	return 0;
}

static int sta529_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
{
	struct snd_soc_component *component = codec_dai->component;
	u8 mode = 0;

	/* interface format */
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_LEFT_J:
		mode = LEFT_J_DATA_FORMAT;
		break;
	case SND_SOC_DAIFMT_I2S:
		mode = I2S_DATA_FORMAT;
		break;
	case SND_SOC_DAIFMT_RIGHT_J:
		mode = RIGHT_J_DATA_FORMAT;
		break;
	default:
		return -EINVAL;
	}

	snd_soc_component_update_bits(component, STA529_S2PCFG0, DATA_FORMAT_MSK, mode);

	return 0;
}

static const struct snd_soc_dai_ops sta529_dai_ops = {
	.hw_params	=	sta529_hw_params,
	.set_fmt	=	sta529_set_dai_fmt,
	.mute_stream	=	sta529_mute,
	.no_capture_mute = 1,
};

static struct snd_soc_dai_driver sta529_dai = {
	.name = "sta529-audio",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 2,
		.channels_max = 2,
		.rates = STA529_RATES,
		.formats = STA529_FORMAT,
	},
	.capture = {
		.stream_name = "Capture",
		.channels_min = 2,
		.channels_max = 2,
		.rates = STA529_RATES,
		.formats = STA529_FORMAT,
	},
	.ops	= &sta529_dai_ops,
};

static const struct snd_soc_component_driver sta529_component_driver = {
	.set_bias_level		= sta529_set_bias_level,
	.controls		= sta529_snd_controls,
	.num_controls		= ARRAY_SIZE(sta529_snd_controls),
	.suspend_bias_off	= 1,
	.idle_bias_on		= 1,
	.use_pmdown_time	= 1,
	.endianness		= 1,
	.non_legacy_dai_naming	= 1,
};

static const struct regmap_config sta529_regmap = {
	.reg_bits = 8,
	.val_bits = 8,

	.max_register = STA529_MAX_REGISTER,
	.readable_reg = sta529_readable,

	.cache_type = REGCACHE_RBTREE,
	.reg_defaults = sta529_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(sta529_reg_defaults),
};

static int sta529_i2c_probe(struct i2c_client *i2c)
{
	struct sta529 *sta529;
	int ret;

	sta529 = devm_kzalloc(&i2c->dev, sizeof(struct sta529), GFP_KERNEL);
	if (!sta529)
		return -ENOMEM;

	sta529->regmap = devm_regmap_init_i2c(i2c, &sta529_regmap);
	if (IS_ERR(sta529->regmap)) {
		ret = PTR_ERR(sta529->regmap);
		dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
		return ret;
	}

	i2c_set_clientdata(i2c, sta529);

	ret = devm_snd_soc_register_component(&i2c->dev,
			&sta529_component_driver, &sta529_dai, 1);
	if (ret != 0)
		dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);

	return ret;
}

static const struct i2c_device_id sta529_i2c_id[] = {
	{ "sta529", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, sta529_i2c_id);

static const struct of_device_id sta529_of_match[] = {
	{ .compatible = "st,sta529", },
	{ }
};
MODULE_DEVICE_TABLE(of, sta529_of_match);

static struct i2c_driver sta529_i2c_driver = {
	.driver = {
		.name = "sta529",
		.of_match_table = sta529_of_match,
	},
	.probe_new	= sta529_i2c_probe,
	.id_table	= sta529_i2c_id,
};

module_i2c_driver(sta529_i2c_driver);

MODULE_DESCRIPTION("ASoC STA529 codec driver");
MODULE_AUTHOR("Rajeev Kumar <rajeevkumar.linux@gmail.com>");
MODULE_LICENSE("GPL");