1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Copyright (c) 2017 BayLibre, SAS. |
4 | * Author: Jerome Brunet <jbrunet@baylibre.com> |
5 | */ |
6 | |
7 | #include <linux/of_platform.h> |
8 | #include <linux/module.h> |
9 | #include <sound/soc.h> |
10 | |
11 | /* |
12 | * The everest 7134 is a very simple DA converter with no register |
13 | */ |
14 | |
15 | struct 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 | |
22 | struct 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 *; |
27 | unsigned int ; |
28 | const struct snd_soc_dapm_route *; |
29 | unsigned int ; |
30 | }; |
31 | |
32 | struct es7134_data { |
33 | unsigned int mclk; |
34 | const struct es7134_chip *chip; |
35 | }; |
36 | |
37 | static 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 | /* should not happen */ |
61 | dev_err(dai->dev, "unsupported rate: %u\n" , rate); |
62 | return -EINVAL; |
63 | } |
64 | |
65 | static 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 | /* mclk has not been provided, assume it is OK */ |
72 | if (!priv->mclk) |
73 | return 0; |
74 | |
75 | return es7134_check_mclk(dai, priv, rate: params_rate(p: params)); |
76 | } |
77 | |
78 | static 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 | |
91 | static 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_CBC_CFC)) { |
98 | dev_err(codec_dai->dev, "Invalid DAI format\n" ); |
99 | return -EINVAL; |
100 | } |
101 | |
102 | return 0; |
103 | } |
104 | |
105 | static int es7134_component_probe(struct snd_soc_component *c) |
106 | { |
107 | struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component: 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, widget: chip->extra_widgets, |
114 | num: 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, route: chip->extra_routes, |
123 | num: 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 | |
133 | static 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 | |
139 | static 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 | |
159 | static const struct es7134_clock_mode es7134_modes[] = { |
160 | { |
161 | /* Single speed mode */ |
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 | /* Double speed mode */ |
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 | /* Quad speed mode */ |
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 | /* Digital I/O are also supplied by VDD on the es7134 */ |
182 | static const struct snd_soc_dapm_route [] = { |
183 | { "Playback" , NULL, "VDD" , } |
184 | }; |
185 | |
186 | static const struct es7134_chip es7134_chip __maybe_unused = { |
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 | |
194 | static 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 | |
201 | static const struct snd_soc_dapm_route es7134_dapm_routes[] = { |
202 | { "AOUTL" , NULL, "DAC" }, |
203 | { "AOUTR" , NULL, "DAC" }, |
204 | { "DAC" , NULL, "VDD" }, |
205 | }; |
206 | |
207 | static 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 | }; |
217 | |
218 | static struct snd_soc_dai_driver es7154_dai = { |
219 | .name = "es7154-hifi" , |
220 | .playback = { |
221 | .stream_name = "Playback" , |
222 | .channels_min = 2, |
223 | .channels_max = 2, |
224 | .rates = (SNDRV_PCM_RATE_8000_48000 | |
225 | SNDRV_PCM_RATE_88200 | |
226 | SNDRV_PCM_RATE_96000), |
227 | .formats = (SNDRV_PCM_FMTBIT_S16_LE | |
228 | SNDRV_PCM_FMTBIT_S18_3LE | |
229 | SNDRV_PCM_FMTBIT_S20_3LE | |
230 | SNDRV_PCM_FMTBIT_S24_3LE | |
231 | SNDRV_PCM_FMTBIT_S24_LE), |
232 | }, |
233 | .ops = &es7134_dai_ops, |
234 | }; |
235 | |
236 | static const struct es7134_clock_mode es7154_modes[] = { |
237 | { |
238 | /* Single speed mode */ |
239 | .rate_min = 8000, |
240 | .rate_max = 50000, |
241 | .mclk_fs = (unsigned int[]) { 32, 64, 128, 192, 256, |
242 | 384, 512, 768, 1024 }, |
243 | .mclk_fs_num = 9, |
244 | }, { |
245 | /* Double speed mode */ |
246 | .rate_min = 84000, |
247 | .rate_max = 100000, |
248 | .mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512, |
249 | 768, 1024}, |
250 | .mclk_fs_num = 7, |
251 | } |
252 | }; |
253 | |
254 | /* Es7154 has a separate supply for digital I/O */ |
255 | static const struct snd_soc_dapm_widget [] = { |
256 | SND_SOC_DAPM_REGULATOR_SUPPLY("PVDD" , 0, 0), |
257 | }; |
258 | |
259 | static const struct snd_soc_dapm_route [] = { |
260 | { "Playback" , NULL, "PVDD" , } |
261 | }; |
262 | |
263 | static const struct es7134_chip es7154_chip __maybe_unused = { |
264 | .dai_drv = &es7154_dai, |
265 | .modes = es7154_modes, |
266 | .mode_num = ARRAY_SIZE(es7154_modes), |
267 | .extra_routes = es7154_extra_routes, |
268 | .extra_route_num = ARRAY_SIZE(es7154_extra_routes), |
269 | .extra_widgets = es7154_extra_widgets, |
270 | .extra_widget_num = ARRAY_SIZE(es7154_extra_widgets), |
271 | }; |
272 | |
273 | static int es7134_probe(struct platform_device *pdev) |
274 | { |
275 | struct device *dev = &pdev->dev; |
276 | struct es7134_data *priv; |
277 | |
278 | priv = devm_kzalloc(dev, size: sizeof(*priv), GFP_KERNEL); |
279 | if (!priv) |
280 | return -ENOMEM; |
281 | platform_set_drvdata(pdev, data: priv); |
282 | |
283 | priv->chip = of_device_get_match_data(dev); |
284 | if (!priv->chip) { |
285 | dev_err(dev, "failed to match device\n" ); |
286 | return -ENODEV; |
287 | } |
288 | |
289 | return devm_snd_soc_register_component(dev: &pdev->dev, |
290 | component_driver: &es7134_component_driver, |
291 | dai_drv: priv->chip->dai_drv, num_dai: 1); |
292 | } |
293 | |
294 | #ifdef CONFIG_OF |
295 | static const struct of_device_id es7134_ids[] = { |
296 | { .compatible = "everest,es7134" , .data = &es7134_chip }, |
297 | { .compatible = "everest,es7144" , .data = &es7134_chip }, |
298 | { .compatible = "everest,es7154" , .data = &es7154_chip }, |
299 | { } |
300 | }; |
301 | MODULE_DEVICE_TABLE(of, es7134_ids); |
302 | #endif |
303 | |
304 | static struct platform_driver es7134_driver = { |
305 | .driver = { |
306 | .name = "es7134" , |
307 | .of_match_table = of_match_ptr(es7134_ids), |
308 | }, |
309 | .probe = es7134_probe, |
310 | }; |
311 | |
312 | module_platform_driver(es7134_driver); |
313 | |
314 | MODULE_DESCRIPTION("ASoC ES7134 audio codec driver" ); |
315 | MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>" ); |
316 | MODULE_LICENSE("GPL" ); |
317 | |