summaryrefslogtreecommitdiff
path: root/sound/soc/codecs/es7134.c
blob: 6d7bca7b78ca7dbcede3be58a5973ccd2a79cb05 (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
/*
 * Copyright (c) 2017 BayLibre, SAS.
 * Author: Jerome Brunet <jbrunet@baylibre.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 */

#include <linux/of_platform.h>
#include <linux/module.h>
#include <sound/soc.h>

/*
 * The everest 7134 is a very simple DA converter with no register
 */

struct es7134_clock_mode {
	unsigned int rate_min;
	unsigned int rate_max;
	unsigned int *mclk_fs;
	unsigned int mclk_fs_num;
};

struct es7134_chip {
	struct snd_soc_dai_driver *dai_drv;
	const struct es7134_clock_mode *modes;
	unsigned int mode_num;
	const struct snd_soc_dapm_widget *extra_widgets;
	unsigned int extra_widget_num;
	const struct snd_soc_dapm_route *extra_routes;
	unsigned int extra_route_num;
};

struct es7134_data {
	unsigned int mclk;
	const struct es7134_chip *chip;
};

static int es7134_check_mclk(struct snd_soc_dai *dai,
			     struct es7134_data *priv,
			     unsigned int rate)
{
	unsigned int mfs = priv->mclk / rate;
	int i, j;

	for (i = 0; i < priv->chip->mode_num; i++) {
		const struct es7134_clock_mode *mode = &priv->chip->modes[i];

		if (rate < mode->rate_min || rate > mode->rate_max)
			continue;

		for (j = 0; j < mode->mclk_fs_num; j++) {
			if (mode->mclk_fs[j] == mfs)
				return 0;
		}

		dev_err(dai->dev, "unsupported mclk_fs %u for rate %u\n",
			mfs, rate);
		return -EINVAL;
	}

	/* should not happen */
	dev_err(dai->dev, "unsupported rate: %u\n", rate);
	return -EINVAL;
}

static int es7134_hw_params(struct snd_pcm_substream *substream,
			    struct snd_pcm_hw_params *params,
			    struct snd_soc_dai *dai)
{
	struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);

	/* mclk has not been provided, assume it is OK */
	if (!priv->mclk)
		return 0;

	return es7134_check_mclk(dai, priv, params_rate(params));
}

static int es7134_set_sysclk(struct snd_soc_dai *dai, int clk_id,
			     unsigned int freq, int dir)
{
	struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);

	if (dir == SND_SOC_CLOCK_IN && clk_id == 0) {
		priv->mclk = freq;
		return 0;
	}

	return -ENOTSUPP;
}

static int es7134_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
{
	fmt &= (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK |
		SND_SOC_DAIFMT_MASTER_MASK);

	if (fmt != (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
		    SND_SOC_DAIFMT_CBS_CFS)) {
		dev_err(codec_dai->dev, "Invalid DAI format\n");
		return -EINVAL;
	}

	return 0;
}

static int es7134_component_probe(struct snd_soc_component *c)
{
	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(c);
	struct es7134_data *priv = snd_soc_component_get_drvdata(c);
	const struct es7134_chip *chip = priv->chip;
	int ret;

	if (chip->extra_widget_num) {
		ret = snd_soc_dapm_new_controls(dapm, chip->extra_widgets,
						chip->extra_widget_num);
		if (ret) {
			dev_err(c->dev, "failed to add extra widgets\n");
			return ret;
		}
	}

	if (chip->extra_route_num) {
		ret = snd_soc_dapm_add_routes(dapm, chip->extra_routes,
					      chip->extra_route_num);
		if (ret) {
			dev_err(c->dev, "failed to add extra routes\n");
			return ret;
		}
	}

	return 0;
}

static const struct snd_soc_dai_ops es7134_dai_ops = {
	.set_fmt	= es7134_set_fmt,
	.hw_params	= es7134_hw_params,
	.set_sysclk	= es7134_set_sysclk,
};

static struct snd_soc_dai_driver es7134_dai = {
	.name = "es7134-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 2,
		.channels_max = 2,
		.rates = (SNDRV_PCM_RATE_8000_48000 |
			  SNDRV_PCM_RATE_88200      |
			  SNDRV_PCM_RATE_96000      |
			  SNDRV_PCM_RATE_176400     |
			  SNDRV_PCM_RATE_192000),
		.formats = (SNDRV_PCM_FMTBIT_S16_LE  |
			    SNDRV_PCM_FMTBIT_S18_3LE |
			    SNDRV_PCM_FMTBIT_S20_3LE |
			    SNDRV_PCM_FMTBIT_S24_3LE |
			    SNDRV_PCM_FMTBIT_S24_LE),
	},
	.ops = &es7134_dai_ops,
};

static const struct es7134_clock_mode es7134_modes[] = {
	{
		/* Single speed mode */
		.rate_min = 8000,
		.rate_max = 50000,
		.mclk_fs = (unsigned int[]) { 256, 384, 512, 768, 1024 },
		.mclk_fs_num = 5,
	}, {
		/* Double speed mode */
		.rate_min = 84000,
		.rate_max = 100000,
		.mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512 },
		.mclk_fs_num = 5,
	}, {
		/* Quad speed mode */
		.rate_min = 167000,
		.rate_max = 192000,
		.mclk_fs = (unsigned int[]) { 128, 192, 256 },
		.mclk_fs_num = 3,
	},
};

/* Digital I/O are also supplied by VDD on the es7134 */
static const struct snd_soc_dapm_route es7134_extra_routes[] = {
	{ "Playback", NULL, "VDD", }
};

static const struct es7134_chip es7134_chip = {
	.dai_drv = &es7134_dai,
	.modes = es7134_modes,
	.mode_num = ARRAY_SIZE(es7134_modes),
	.extra_routes = es7134_extra_routes,
	.extra_route_num = ARRAY_SIZE(es7134_extra_routes),
};

static const struct snd_soc_dapm_widget es7134_dapm_widgets[] = {
	SND_SOC_DAPM_OUTPUT("AOUTL"),
	SND_SOC_DAPM_OUTPUT("AOUTR"),
	SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_REGULATOR_SUPPLY("VDD", 0, 0),
};

static const struct snd_soc_dapm_route es7134_dapm_routes[] = {
	{ "AOUTL", NULL, "DAC" },
	{ "AOUTR", NULL, "DAC" },
	{ "DAC", NULL, "VDD" },
};

static const struct snd_soc_component_driver es7134_component_driver = {
	.probe			= es7134_component_probe,
	.dapm_widgets		= es7134_dapm_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(es7134_dapm_widgets),
	.dapm_routes		= es7134_dapm_routes,
	.num_dapm_routes	= ARRAY_SIZE(es7134_dapm_routes),
	.idle_bias_on		= 1,
	.use_pmdown_time	= 1,
	.endianness		= 1,
	.non_legacy_dai_naming	= 1,
};

static struct snd_soc_dai_driver es7154_dai = {
	.name = "es7154-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 2,
		.channels_max = 2,
		.rates = (SNDRV_PCM_RATE_8000_48000 |
			  SNDRV_PCM_RATE_88200      |
			  SNDRV_PCM_RATE_96000),
		.formats = (SNDRV_PCM_FMTBIT_S16_LE  |
			    SNDRV_PCM_FMTBIT_S18_3LE |
			    SNDRV_PCM_FMTBIT_S20_3LE |
			    SNDRV_PCM_FMTBIT_S24_3LE |
			    SNDRV_PCM_FMTBIT_S24_LE),
	},
	.ops = &es7134_dai_ops,
};

static const struct es7134_clock_mode es7154_modes[] = {
	{
		/* Single speed mode */
		.rate_min = 8000,
		.rate_max = 50000,
		.mclk_fs = (unsigned int[]) { 32, 64, 128, 192, 256,
					      384, 512, 768, 1024 },
		.mclk_fs_num = 9,
	}, {
		/* Double speed mode */
		.rate_min = 84000,
		.rate_max = 100000,
		.mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512,
					      768, 1024},
		.mclk_fs_num = 7,
	}
};

/* Es7154 has a separate supply for digital I/O  */
static const struct snd_soc_dapm_widget es7154_extra_widgets[] = {
	SND_SOC_DAPM_REGULATOR_SUPPLY("PVDD", 0, 0),
};

static const struct snd_soc_dapm_route es7154_extra_routes[] = {
	{ "Playback", NULL, "PVDD", }
};

static const struct es7134_chip es7154_chip = {
	.dai_drv = &es7154_dai,
	.modes = es7154_modes,
	.mode_num = ARRAY_SIZE(es7154_modes),
	.extra_routes = es7154_extra_routes,
	.extra_route_num = ARRAY_SIZE(es7154_extra_routes),
	.extra_widgets = es7154_extra_widgets,
	.extra_widget_num = ARRAY_SIZE(es7154_extra_widgets),
};

static int es7134_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct es7134_data *priv;

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;
	platform_set_drvdata(pdev, priv);

	priv->chip = of_device_get_match_data(dev);
	if (!priv->chip) {
		dev_err(dev, "failed to match device\n");
		return -ENODEV;
	}

	return devm_snd_soc_register_component(&pdev->dev,
				      &es7134_component_driver,
				      priv->chip->dai_drv, 1);
}

#ifdef CONFIG_OF
static const struct of_device_id es7134_ids[] = {
	{ .compatible = "everest,es7134", .data = &es7134_chip },
	{ .compatible = "everest,es7144", .data = &es7134_chip },
	{ .compatible = "everest,es7154", .data = &es7154_chip },
	{ }
};
MODULE_DEVICE_TABLE(of, es7134_ids);
#endif

static struct platform_driver es7134_driver = {
	.driver = {
		.name = "es7134",
		.of_match_table = of_match_ptr(es7134_ids),
	},
	.probe = es7134_probe,
};

module_platform_driver(es7134_driver);

MODULE_DESCRIPTION("ASoC ES7134 audio codec driver");
MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
MODULE_LICENSE("GPL");