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7#include <linux/of_platform.h>
8#include <linux/module.h>
9#include <sound/soc.h>
10
11
12
13
14
15struct es7134_clock_mode {
16 unsigned int rate_min;
17 unsigned int rate_max;
18 unsigned int *mclk_fs;
19 unsigned int mclk_fs_num;
20};
21
22struct es7134_chip {
23 struct snd_soc_dai_driver *dai_drv;
24 const struct es7134_clock_mode *modes;
25 unsigned int mode_num;
26 const struct snd_soc_dapm_widget *extra_widgets;
27 unsigned int extra_widget_num;
28 const struct snd_soc_dapm_route *extra_routes;
29 unsigned int extra_route_num;
30};
31
32struct es7134_data {
33 unsigned int mclk;
34 const struct es7134_chip *chip;
35};
36
37static int es7134_check_mclk(struct snd_soc_dai *dai,
38 struct es7134_data *priv,
39 unsigned int rate)
40{
41 unsigned int mfs = priv->mclk / rate;
42 int i, j;
43
44 for (i = 0; i < priv->chip->mode_num; i++) {
45 const struct es7134_clock_mode *mode = &priv->chip->modes[i];
46
47 if (rate < mode->rate_min || rate > mode->rate_max)
48 continue;
49
50 for (j = 0; j < mode->mclk_fs_num; j++) {
51 if (mode->mclk_fs[j] == mfs)
52 return 0;
53 }
54
55 dev_err(dai->dev, "unsupported mclk_fs %u for rate %u\n",
56 mfs, rate);
57 return -EINVAL;
58 }
59
60
61 dev_err(dai->dev, "unsupported rate: %u\n", rate);
62 return -EINVAL;
63}
64
65static int es7134_hw_params(struct snd_pcm_substream *substream,
66 struct snd_pcm_hw_params *params,
67 struct snd_soc_dai *dai)
68{
69 struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);
70
71
72 if (!priv->mclk)
73 return 0;
74
75 return es7134_check_mclk(dai, priv, params_rate(params));
76}
77
78static int es7134_set_sysclk(struct snd_soc_dai *dai, int clk_id,
79 unsigned int freq, int dir)
80{
81 struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);
82
83 if (dir == SND_SOC_CLOCK_IN && clk_id == 0) {
84 priv->mclk = freq;
85 return 0;
86 }
87
88 return -ENOTSUPP;
89}
90
91static int es7134_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
92{
93 fmt &= (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK |
94 SND_SOC_DAIFMT_MASTER_MASK);
95
96 if (fmt != (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
97 SND_SOC_DAIFMT_CBS_CFS)) {
98 dev_err(codec_dai->dev, "Invalid DAI format\n");
99 return -EINVAL;
100 }
101
102 return 0;
103}
104
105static int es7134_component_probe(struct snd_soc_component *c)
106{
107 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(c);
108 struct es7134_data *priv = snd_soc_component_get_drvdata(c);
109 const struct es7134_chip *chip = priv->chip;
110 int ret;
111
112 if (chip->extra_widget_num) {
113 ret = snd_soc_dapm_new_controls(dapm, chip->extra_widgets,
114 chip->extra_widget_num);
115 if (ret) {
116 dev_err(c->dev, "failed to add extra widgets\n");
117 return ret;
118 }
119 }
120
121 if (chip->extra_route_num) {
122 ret = snd_soc_dapm_add_routes(dapm, chip->extra_routes,
123 chip->extra_route_num);
124 if (ret) {
125 dev_err(c->dev, "failed to add extra routes\n");
126 return ret;
127 }
128 }
129
130 return 0;
131}
132
133static const struct snd_soc_dai_ops es7134_dai_ops = {
134 .set_fmt = es7134_set_fmt,
135 .hw_params = es7134_hw_params,
136 .set_sysclk = es7134_set_sysclk,
137};
138
139static struct snd_soc_dai_driver es7134_dai = {
140 .name = "es7134-hifi",
141 .playback = {
142 .stream_name = "Playback",
143 .channels_min = 2,
144 .channels_max = 2,
145 .rates = (SNDRV_PCM_RATE_8000_48000 |
146 SNDRV_PCM_RATE_88200 |
147 SNDRV_PCM_RATE_96000 |
148 SNDRV_PCM_RATE_176400 |
149 SNDRV_PCM_RATE_192000),
150 .formats = (SNDRV_PCM_FMTBIT_S16_LE |
151 SNDRV_PCM_FMTBIT_S18_3LE |
152 SNDRV_PCM_FMTBIT_S20_3LE |
153 SNDRV_PCM_FMTBIT_S24_3LE |
154 SNDRV_PCM_FMTBIT_S24_LE),
155 },
156 .ops = &es7134_dai_ops,
157};
158
159static const struct es7134_clock_mode es7134_modes[] = {
160 {
161
162 .rate_min = 8000,
163 .rate_max = 50000,
164 .mclk_fs = (unsigned int[]) { 256, 384, 512, 768, 1024 },
165 .mclk_fs_num = 5,
166 }, {
167
168 .rate_min = 84000,
169 .rate_max = 100000,
170 .mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512 },
171 .mclk_fs_num = 5,
172 }, {
173
174 .rate_min = 167000,
175 .rate_max = 192000,
176 .mclk_fs = (unsigned int[]) { 128, 192, 256 },
177 .mclk_fs_num = 3,
178 },
179};
180
181
182static const struct snd_soc_dapm_route es7134_extra_routes[] = {
183 { "Playback", NULL, "VDD", }
184};
185
186static const struct es7134_chip es7134_chip = {
187 .dai_drv = &es7134_dai,
188 .modes = es7134_modes,
189 .mode_num = ARRAY_SIZE(es7134_modes),
190 .extra_routes = es7134_extra_routes,
191 .extra_route_num = ARRAY_SIZE(es7134_extra_routes),
192};
193
194static const struct snd_soc_dapm_widget es7134_dapm_widgets[] = {
195 SND_SOC_DAPM_OUTPUT("AOUTL"),
196 SND_SOC_DAPM_OUTPUT("AOUTR"),
197 SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
198 SND_SOC_DAPM_REGULATOR_SUPPLY("VDD", 0, 0),
199};
200
201static const struct snd_soc_dapm_route es7134_dapm_routes[] = {
202 { "AOUTL", NULL, "DAC" },
203 { "AOUTR", NULL, "DAC" },
204 { "DAC", NULL, "VDD" },
205};
206
207static const struct snd_soc_component_driver es7134_component_driver = {
208 .probe = es7134_component_probe,
209 .dapm_widgets = es7134_dapm_widgets,
210 .num_dapm_widgets = ARRAY_SIZE(es7134_dapm_widgets),
211 .dapm_routes = es7134_dapm_routes,
212 .num_dapm_routes = ARRAY_SIZE(es7134_dapm_routes),
213 .idle_bias_on = 1,
214 .use_pmdown_time = 1,
215 .endianness = 1,
216 .non_legacy_dai_naming = 1,
217};
218
219static struct snd_soc_dai_driver es7154_dai = {
220 .name = "es7154-hifi",
221 .playback = {
222 .stream_name = "Playback",
223 .channels_min = 2,
224 .channels_max = 2,
225 .rates = (SNDRV_PCM_RATE_8000_48000 |
226 SNDRV_PCM_RATE_88200 |
227 SNDRV_PCM_RATE_96000),
228 .formats = (SNDRV_PCM_FMTBIT_S16_LE |
229 SNDRV_PCM_FMTBIT_S18_3LE |
230 SNDRV_PCM_FMTBIT_S20_3LE |
231 SNDRV_PCM_FMTBIT_S24_3LE |
232 SNDRV_PCM_FMTBIT_S24_LE),
233 },
234 .ops = &es7134_dai_ops,
235};
236
237static const struct es7134_clock_mode es7154_modes[] = {
238 {
239
240 .rate_min = 8000,
241 .rate_max = 50000,
242 .mclk_fs = (unsigned int[]) { 32, 64, 128, 192, 256,
243 384, 512, 768, 1024 },
244 .mclk_fs_num = 9,
245 }, {
246
247 .rate_min = 84000,
248 .rate_max = 100000,
249 .mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512,
250 768, 1024},
251 .mclk_fs_num = 7,
252 }
253};
254
255
256static const struct snd_soc_dapm_widget es7154_extra_widgets[] = {
257 SND_SOC_DAPM_REGULATOR_SUPPLY("PVDD", 0, 0),
258};
259
260static const struct snd_soc_dapm_route es7154_extra_routes[] = {
261 { "Playback", NULL, "PVDD", }
262};
263
264static const struct es7134_chip es7154_chip = {
265 .dai_drv = &es7154_dai,
266 .modes = es7154_modes,
267 .mode_num = ARRAY_SIZE(es7154_modes),
268 .extra_routes = es7154_extra_routes,
269 .extra_route_num = ARRAY_SIZE(es7154_extra_routes),
270 .extra_widgets = es7154_extra_widgets,
271 .extra_widget_num = ARRAY_SIZE(es7154_extra_widgets),
272};
273
274static int es7134_probe(struct platform_device *pdev)
275{
276 struct device *dev = &pdev->dev;
277 struct es7134_data *priv;
278
279 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
280 if (!priv)
281 return -ENOMEM;
282 platform_set_drvdata(pdev, priv);
283
284 priv->chip = of_device_get_match_data(dev);
285 if (!priv->chip) {
286 dev_err(dev, "failed to match device\n");
287 return -ENODEV;
288 }
289
290 return devm_snd_soc_register_component(&pdev->dev,
291 &es7134_component_driver,
292 priv->chip->dai_drv, 1);
293}
294
295#ifdef CONFIG_OF
296static const struct of_device_id es7134_ids[] = {
297 { .compatible = "everest,es7134", .data = &es7134_chip },
298 { .compatible = "everest,es7144", .data = &es7134_chip },
299 { .compatible = "everest,es7154", .data = &es7154_chip },
300 { }
301};
302MODULE_DEVICE_TABLE(of, es7134_ids);
303#endif
304
305static struct platform_driver es7134_driver = {
306 .driver = {
307 .name = "es7134",
308 .of_match_table = of_match_ptr(es7134_ids),
309 },
310 .probe = es7134_probe,
311};
312
313module_platform_driver(es7134_driver);
314
315MODULE_DESCRIPTION("ASoC ES7134 audio codec driver");
316MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
317MODULE_LICENSE("GPL");
318
