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#include <linux/module.h>
32#include <linux/platform_device.h>
33#include <linux/slab.h>
34#include <linux/gpio.h>
35#include <linux/of_gpio.h>
36
37#include <sound/core.h>
38#include <sound/jack.h>
39#include <sound/pcm.h>
40#include <sound/pcm_params.h>
41#include <sound/soc.h>
42#include <sound/tegra_wm8903.h>
43
44#include "../codecs/wm8903.h"
45
46#include "tegra_asoc_utils.h"
47
48#define DRV_NAME "tegra-snd-wm8903"
49
50struct tegra_wm8903 {
51 struct tegra_wm8903_platform_data pdata;
52 struct tegra_asoc_utils_data util_data;
53};
54
55static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
56 struct snd_pcm_hw_params *params)
57{
58 struct snd_soc_pcm_runtime *rtd = substream->private_data;
59 struct snd_soc_dai *codec_dai = rtd->codec_dai;
60 struct snd_soc_codec *codec = codec_dai->codec;
61 struct snd_soc_card *card = codec->card;
62 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
63 int srate, mclk;
64 int err;
65
66 srate = params_rate(params);
67 switch (srate) {
68 case 64000:
69 case 88200:
70 case 96000:
71 mclk = 128 * srate;
72 break;
73 default:
74 mclk = 256 * srate;
75 break;
76 }
77
78 while (mclk < 6000000)
79 mclk *= 2;
80
81 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
82 if (err < 0) {
83 dev_err(card->dev, "Can't configure clocks\n");
84 return err;
85 }
86
87 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
88 SND_SOC_CLOCK_IN);
89 if (err < 0) {
90 dev_err(card->dev, "codec_dai clock not set\n");
91 return err;
92 }
93
94 return 0;
95}
96
97static struct snd_soc_ops tegra_wm8903_ops = {
98 .hw_params = tegra_wm8903_hw_params,
99};
100
101static struct snd_soc_jack tegra_wm8903_hp_jack;
102
103static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
104 {
105 .pin = "Headphone Jack",
106 .mask = SND_JACK_HEADPHONE,
107 },
108};
109
110static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
111 .name = "headphone detect",
112 .report = SND_JACK_HEADPHONE,
113 .debounce_time = 150,
114 .invert = 1,
115};
116
117static struct snd_soc_jack tegra_wm8903_mic_jack;
118
119static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
120 {
121 .pin = "Mic Jack",
122 .mask = SND_JACK_MICROPHONE,
123 },
124};
125
126static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
127 struct snd_kcontrol *k, int event)
128{
129 struct snd_soc_dapm_context *dapm = w->dapm;
130 struct snd_soc_card *card = dapm->card;
131 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
132 struct tegra_wm8903_platform_data *pdata = &machine->pdata;
133
134 if (!gpio_is_valid(pdata->gpio_spkr_en))
135 return 0;
136
137 gpio_set_value_cansleep(pdata->gpio_spkr_en,
138 SND_SOC_DAPM_EVENT_ON(event));
139
140 return 0;
141}
142
143static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
144 struct snd_kcontrol *k, int event)
145{
146 struct snd_soc_dapm_context *dapm = w->dapm;
147 struct snd_soc_card *card = dapm->card;
148 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
149 struct tegra_wm8903_platform_data *pdata = &machine->pdata;
150
151 if (!gpio_is_valid(pdata->gpio_hp_mute))
152 return 0;
153
154 gpio_set_value_cansleep(pdata->gpio_hp_mute,
155 !SND_SOC_DAPM_EVENT_ON(event));
156
157 return 0;
158}
159
160static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
161 SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
162 SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
163 SND_SOC_DAPM_MIC("Mic Jack", NULL),
164};
165
166static const struct snd_soc_dapm_route harmony_audio_map[] = {
167 {"Headphone Jack", NULL, "HPOUTR"},
168 {"Headphone Jack", NULL, "HPOUTL"},
169 {"Int Spk", NULL, "ROP"},
170 {"Int Spk", NULL, "RON"},
171 {"Int Spk", NULL, "LOP"},
172 {"Int Spk", NULL, "LON"},
173 {"Mic Jack", NULL, "MICBIAS"},
174 {"IN1L", NULL, "Mic Jack"},
175};
176
177static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
178 SOC_DAPM_PIN_SWITCH("Int Spk"),
179};
180
181static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
182{
183 struct snd_soc_dai *codec_dai = rtd->codec_dai;
184 struct snd_soc_codec *codec = codec_dai->codec;
185 struct snd_soc_dapm_context *dapm = &codec->dapm;
186 struct snd_soc_card *card = codec->card;
187 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
188 struct tegra_wm8903_platform_data *pdata = &machine->pdata;
189
190 if (gpio_is_valid(pdata->gpio_hp_det)) {
191 tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det;
192 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
193 &tegra_wm8903_hp_jack);
194 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack,
195 ARRAY_SIZE(tegra_wm8903_hp_jack_pins),
196 tegra_wm8903_hp_jack_pins);
197 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
198 1,
199 &tegra_wm8903_hp_jack_gpio);
200 }
201
202 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
203 &tegra_wm8903_mic_jack);
204 snd_soc_jack_add_pins(&tegra_wm8903_mic_jack,
205 ARRAY_SIZE(tegra_wm8903_mic_jack_pins),
206 tegra_wm8903_mic_jack_pins);
207 wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
208 0);
209
210 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
211
212 return 0;
213}
214
215static int tegra_wm8903_remove(struct snd_soc_card *card)
216{
217 struct snd_soc_pcm_runtime *rtd = &(card->rtd[0]);
218 struct snd_soc_dai *codec_dai = rtd->codec_dai;
219 struct snd_soc_codec *codec = codec_dai->codec;
220
221 wm8903_mic_detect(codec, NULL, 0, 0);
222
223 return 0;
224}
225
226static struct snd_soc_dai_link tegra_wm8903_dai = {
227 .name = "WM8903",
228 .stream_name = "WM8903 PCM",
229 .codec_name = "wm8903.0-001a",
230 .platform_name = "tegra20-i2s.0",
231 .cpu_dai_name = "tegra20-i2s.0",
232 .codec_dai_name = "wm8903-hifi",
233 .init = tegra_wm8903_init,
234 .ops = &tegra_wm8903_ops,
235 .dai_fmt = SND_SOC_DAIFMT_I2S |
236 SND_SOC_DAIFMT_NB_NF |
237 SND_SOC_DAIFMT_CBS_CFS,
238};
239
240static struct snd_soc_card snd_soc_tegra_wm8903 = {
241 .name = "tegra-wm8903",
242 .owner = THIS_MODULE,
243 .dai_link = &tegra_wm8903_dai,
244 .num_links = 1,
245
246 .remove = tegra_wm8903_remove,
247
248 .controls = tegra_wm8903_controls,
249 .num_controls = ARRAY_SIZE(tegra_wm8903_controls),
250 .dapm_widgets = tegra_wm8903_dapm_widgets,
251 .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
252 .fully_routed = true,
253};
254
255static int tegra_wm8903_driver_probe(struct platform_device *pdev)
256{
257 struct device_node *np = pdev->dev.of_node;
258 struct snd_soc_card *card = &snd_soc_tegra_wm8903;
259 struct tegra_wm8903 *machine;
260 struct tegra_wm8903_platform_data *pdata;
261 int ret;
262
263 if (!pdev->dev.platform_data && !pdev->dev.of_node) {
264 dev_err(&pdev->dev, "No platform data supplied\n");
265 return -EINVAL;
266 }
267
268 machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903),
269 GFP_KERNEL);
270 if (!machine) {
271 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
272 ret = -ENOMEM;
273 goto err;
274 }
275 pdata = &machine->pdata;
276
277 card->dev = &pdev->dev;
278 platform_set_drvdata(pdev, card);
279 snd_soc_card_set_drvdata(card, machine);
280
281 if (pdev->dev.platform_data) {
282 memcpy(pdata, card->dev->platform_data, sizeof(*pdata));
283 } else if (np) {
284 pdata->gpio_spkr_en = of_get_named_gpio(np,
285 "nvidia,spkr-en-gpios", 0);
286 if (pdata->gpio_spkr_en == -EPROBE_DEFER)
287 return -EPROBE_DEFER;
288
289 pdata->gpio_hp_mute = of_get_named_gpio(np,
290 "nvidia,hp-mute-gpios", 0);
291 if (pdata->gpio_hp_mute == -EPROBE_DEFER)
292 return -EPROBE_DEFER;
293
294 pdata->gpio_hp_det = of_get_named_gpio(np,
295 "nvidia,hp-det-gpios", 0);
296 if (pdata->gpio_hp_det == -EPROBE_DEFER)
297 return -EPROBE_DEFER;
298
299 pdata->gpio_int_mic_en = of_get_named_gpio(np,
300 "nvidia,int-mic-en-gpios", 0);
301 if (pdata->gpio_int_mic_en == -EPROBE_DEFER)
302 return -EPROBE_DEFER;
303
304 pdata->gpio_ext_mic_en = of_get_named_gpio(np,
305 "nvidia,ext-mic-en-gpios", 0);
306 if (pdata->gpio_ext_mic_en == -EPROBE_DEFER)
307 return -EPROBE_DEFER;
308 }
309
310 if (np) {
311 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
312 if (ret)
313 goto err;
314
315 ret = snd_soc_of_parse_audio_routing(card,
316 "nvidia,audio-routing");
317 if (ret)
318 goto err;
319
320 tegra_wm8903_dai.codec_name = NULL;
321 tegra_wm8903_dai.codec_of_node = of_parse_phandle(np,
322 "nvidia,audio-codec", 0);
323 if (!tegra_wm8903_dai.codec_of_node) {
324 dev_err(&pdev->dev,
325 "Property 'nvidia,audio-codec' missing or invalid\n");
326 ret = -EINVAL;
327 goto err;
328 }
329
330 tegra_wm8903_dai.cpu_dai_name = NULL;
331 tegra_wm8903_dai.cpu_of_node = of_parse_phandle(np,
332 "nvidia,i2s-controller", 0);
333 if (!tegra_wm8903_dai.cpu_of_node) {
334 dev_err(&pdev->dev,
335 "Property 'nvidia,i2s-controller' missing or invalid\n");
336 ret = -EINVAL;
337 goto err;
338 }
339
340 tegra_wm8903_dai.platform_name = NULL;
341 tegra_wm8903_dai.platform_of_node =
342 tegra_wm8903_dai.cpu_of_node;
343 } else {
344 card->dapm_routes = harmony_audio_map;
345 card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map);
346 }
347
348 if (gpio_is_valid(pdata->gpio_spkr_en)) {
349 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_spkr_en,
350 GPIOF_OUT_INIT_LOW, "spkr_en");
351 if (ret) {
352 dev_err(card->dev, "cannot get spkr_en gpio\n");
353 return ret;
354 }
355 }
356
357 if (gpio_is_valid(pdata->gpio_hp_mute)) {
358 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_hp_mute,
359 GPIOF_OUT_INIT_HIGH, "hp_mute");
360 if (ret) {
361 dev_err(card->dev, "cannot get hp_mute gpio\n");
362 return ret;
363 }
364 }
365
366 if (gpio_is_valid(pdata->gpio_int_mic_en)) {
367
368 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_int_mic_en,
369 GPIOF_OUT_INIT_LOW, "int_mic_en");
370 if (ret) {
371 dev_err(card->dev, "cannot get int_mic_en gpio\n");
372 return ret;
373 }
374 }
375
376 if (gpio_is_valid(pdata->gpio_ext_mic_en)) {
377
378 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_ext_mic_en,
379 GPIOF_OUT_INIT_LOW, "ext_mic_en");
380 if (ret) {
381 dev_err(card->dev, "cannot get ext_mic_en gpio\n");
382 return ret;
383 }
384 }
385
386 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
387 if (ret)
388 goto err;
389
390 ret = snd_soc_register_card(card);
391 if (ret) {
392 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
393 ret);
394 goto err_fini_utils;
395 }
396
397 return 0;
398
399err_fini_utils:
400 tegra_asoc_utils_fini(&machine->util_data);
401err:
402 return ret;
403}
404
405static int tegra_wm8903_driver_remove(struct platform_device *pdev)
406{
407 struct snd_soc_card *card = platform_get_drvdata(pdev);
408 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
409
410 snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack, 1,
411 &tegra_wm8903_hp_jack_gpio);
412
413 snd_soc_unregister_card(card);
414
415 tegra_asoc_utils_fini(&machine->util_data);
416
417 return 0;
418}
419
420static const struct of_device_id tegra_wm8903_of_match[] = {
421 { .compatible = "nvidia,tegra-audio-wm8903", },
422 {},
423};
424
425static struct platform_driver tegra_wm8903_driver = {
426 .driver = {
427 .name = DRV_NAME,
428 .owner = THIS_MODULE,
429 .pm = &snd_soc_pm_ops,
430 .of_match_table = tegra_wm8903_of_match,
431 },
432 .probe = tegra_wm8903_driver_probe,
433 .remove = tegra_wm8903_driver_remove,
434};
435module_platform_driver(tegra_wm8903_driver);
436
437MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
438MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
439MODULE_LICENSE("GPL");
440MODULE_ALIAS("platform:" DRV_NAME);
441MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match);
442
