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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
43#include "../codecs/wm8903.h"
44
45#include "tegra_asoc_utils.h"
46
47#define DRV_NAME "tegra-snd-wm8903"
48
49struct tegra_wm8903 {
50 int gpio_spkr_en;
51 int gpio_hp_det;
52 int gpio_hp_mute;
53 int gpio_int_mic_en;
54 int gpio_ext_mic_en;
55 struct tegra_asoc_utils_data util_data;
56};
57
58static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
59 struct snd_pcm_hw_params *params)
60{
61 struct snd_soc_pcm_runtime *rtd = substream->private_data;
62 struct snd_soc_dai *codec_dai = rtd->codec_dai;
63 struct snd_soc_card *card = rtd->card;
64 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
65 int srate, mclk;
66 int err;
67
68 srate = params_rate(params);
69 switch (srate) {
70 case 64000:
71 case 88200:
72 case 96000:
73 mclk = 128 * srate;
74 break;
75 default:
76 mclk = 256 * srate;
77 break;
78 }
79
80 while (mclk < 6000000)
81 mclk *= 2;
82
83 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
84 if (err < 0) {
85 dev_err(card->dev, "Can't configure clocks\n");
86 return err;
87 }
88
89 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
90 SND_SOC_CLOCK_IN);
91 if (err < 0) {
92 dev_err(card->dev, "codec_dai clock not set\n");
93 return err;
94 }
95
96 return 0;
97}
98
99static const struct snd_soc_ops tegra_wm8903_ops = {
100 .hw_params = tegra_wm8903_hw_params,
101};
102
103static struct snd_soc_jack tegra_wm8903_hp_jack;
104
105static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
106 {
107 .pin = "Headphone Jack",
108 .mask = SND_JACK_HEADPHONE,
109 },
110};
111
112static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
113 .name = "headphone detect",
114 .report = SND_JACK_HEADPHONE,
115 .debounce_time = 150,
116 .invert = 1,
117};
118
119static struct snd_soc_jack tegra_wm8903_mic_jack;
120
121static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
122 {
123 .pin = "Mic Jack",
124 .mask = SND_JACK_MICROPHONE,
125 },
126};
127
128static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
129 struct snd_kcontrol *k, int event)
130{
131 struct snd_soc_dapm_context *dapm = w->dapm;
132 struct snd_soc_card *card = dapm->card;
133 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
134
135 if (!gpio_is_valid(machine->gpio_spkr_en))
136 return 0;
137
138 gpio_set_value_cansleep(machine->gpio_spkr_en,
139 SND_SOC_DAPM_EVENT_ON(event));
140
141 return 0;
142}
143
144static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
145 struct snd_kcontrol *k, int event)
146{
147 struct snd_soc_dapm_context *dapm = w->dapm;
148 struct snd_soc_card *card = dapm->card;
149 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
150
151 if (!gpio_is_valid(machine->gpio_hp_mute))
152 return 0;
153
154 gpio_set_value_cansleep(machine->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_kcontrol_new tegra_wm8903_controls[] = {
167 SOC_DAPM_PIN_SWITCH("Int Spk"),
168};
169
170static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
171{
172 struct snd_soc_dai *codec_dai = rtd->codec_dai;
173 struct snd_soc_codec *codec = codec_dai->codec;
174 struct snd_soc_card *card = rtd->card;
175 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
176
177 if (gpio_is_valid(machine->gpio_hp_det)) {
178 tegra_wm8903_hp_jack_gpio.gpio = machine->gpio_hp_det;
179 snd_soc_card_jack_new(rtd->card, "Headphone Jack",
180 SND_JACK_HEADPHONE, &tegra_wm8903_hp_jack,
181 tegra_wm8903_hp_jack_pins,
182 ARRAY_SIZE(tegra_wm8903_hp_jack_pins));
183 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
184 1,
185 &tegra_wm8903_hp_jack_gpio);
186 }
187
188 snd_soc_card_jack_new(rtd->card, "Mic Jack", SND_JACK_MICROPHONE,
189 &tegra_wm8903_mic_jack,
190 tegra_wm8903_mic_jack_pins,
191 ARRAY_SIZE(tegra_wm8903_mic_jack_pins));
192 wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
193 0);
194
195 snd_soc_dapm_force_enable_pin(&card->dapm, "MICBIAS");
196
197 return 0;
198}
199
200static int tegra_wm8903_remove(struct snd_soc_card *card)
201{
202 struct snd_soc_pcm_runtime *rtd =
203 snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
204 struct snd_soc_dai *codec_dai = rtd->codec_dai;
205 struct snd_soc_codec *codec = codec_dai->codec;
206
207 wm8903_mic_detect(codec, NULL, 0, 0);
208
209 return 0;
210}
211
212static struct snd_soc_dai_link tegra_wm8903_dai = {
213 .name = "WM8903",
214 .stream_name = "WM8903 PCM",
215 .codec_dai_name = "wm8903-hifi",
216 .init = tegra_wm8903_init,
217 .ops = &tegra_wm8903_ops,
218 .dai_fmt = SND_SOC_DAIFMT_I2S |
219 SND_SOC_DAIFMT_NB_NF |
220 SND_SOC_DAIFMT_CBS_CFS,
221};
222
223static struct snd_soc_card snd_soc_tegra_wm8903 = {
224 .name = "tegra-wm8903",
225 .owner = THIS_MODULE,
226 .dai_link = &tegra_wm8903_dai,
227 .num_links = 1,
228 .remove = tegra_wm8903_remove,
229 .controls = tegra_wm8903_controls,
230 .num_controls = ARRAY_SIZE(tegra_wm8903_controls),
231 .dapm_widgets = tegra_wm8903_dapm_widgets,
232 .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
233 .fully_routed = true,
234};
235
236static int tegra_wm8903_driver_probe(struct platform_device *pdev)
237{
238 struct device_node *np = pdev->dev.of_node;
239 struct snd_soc_card *card = &snd_soc_tegra_wm8903;
240 struct tegra_wm8903 *machine;
241 int ret;
242
243 machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903),
244 GFP_KERNEL);
245 if (!machine)
246 return -ENOMEM;
247
248 card->dev = &pdev->dev;
249 snd_soc_card_set_drvdata(card, machine);
250
251 machine->gpio_spkr_en = of_get_named_gpio(np, "nvidia,spkr-en-gpios",
252 0);
253 if (machine->gpio_spkr_en == -EPROBE_DEFER)
254 return -EPROBE_DEFER;
255 if (gpio_is_valid(machine->gpio_spkr_en)) {
256 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_spkr_en,
257 GPIOF_OUT_INIT_LOW, "spkr_en");
258 if (ret) {
259 dev_err(card->dev, "cannot get spkr_en gpio\n");
260 return ret;
261 }
262 }
263
264 machine->gpio_hp_mute = of_get_named_gpio(np, "nvidia,hp-mute-gpios",
265 0);
266 if (machine->gpio_hp_mute == -EPROBE_DEFER)
267 return -EPROBE_DEFER;
268 if (gpio_is_valid(machine->gpio_hp_mute)) {
269 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_mute,
270 GPIOF_OUT_INIT_HIGH, "hp_mute");
271 if (ret) {
272 dev_err(card->dev, "cannot get hp_mute gpio\n");
273 return ret;
274 }
275 }
276
277 machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
278 if (machine->gpio_hp_det == -EPROBE_DEFER)
279 return -EPROBE_DEFER;
280
281 machine->gpio_int_mic_en = of_get_named_gpio(np,
282 "nvidia,int-mic-en-gpios", 0);
283 if (machine->gpio_int_mic_en == -EPROBE_DEFER)
284 return -EPROBE_DEFER;
285 if (gpio_is_valid(machine->gpio_int_mic_en)) {
286
287 ret = devm_gpio_request_one(&pdev->dev,
288 machine->gpio_int_mic_en,
289 GPIOF_OUT_INIT_LOW, "int_mic_en");
290 if (ret) {
291 dev_err(card->dev, "cannot get int_mic_en gpio\n");
292 return ret;
293 }
294 }
295
296 machine->gpio_ext_mic_en = of_get_named_gpio(np,
297 "nvidia,ext-mic-en-gpios", 0);
298 if (machine->gpio_ext_mic_en == -EPROBE_DEFER)
299 return -EPROBE_DEFER;
300 if (gpio_is_valid(machine->gpio_ext_mic_en)) {
301
302 ret = devm_gpio_request_one(&pdev->dev,
303 machine->gpio_ext_mic_en,
304 GPIOF_OUT_INIT_LOW, "ext_mic_en");
305 if (ret) {
306 dev_err(card->dev, "cannot get ext_mic_en gpio\n");
307 return ret;
308 }
309 }
310
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, "nvidia,audio-routing");
316 if (ret)
317 goto err;
318
319 tegra_wm8903_dai.codec_of_node = of_parse_phandle(np,
320 "nvidia,audio-codec", 0);
321 if (!tegra_wm8903_dai.codec_of_node) {
322 dev_err(&pdev->dev,
323 "Property 'nvidia,audio-codec' missing or invalid\n");
324 ret = -EINVAL;
325 goto err;
326 }
327
328 tegra_wm8903_dai.cpu_of_node = of_parse_phandle(np,
329 "nvidia,i2s-controller", 0);
330 if (!tegra_wm8903_dai.cpu_of_node) {
331 dev_err(&pdev->dev,
332 "Property 'nvidia,i2s-controller' missing or invalid\n");
333 ret = -EINVAL;
334 goto err;
335 }
336
337 tegra_wm8903_dai.platform_of_node = tegra_wm8903_dai.cpu_of_node;
338
339 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
340 if (ret)
341 goto err;
342
343 ret = snd_soc_register_card(card);
344 if (ret) {
345 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
346 ret);
347 goto err_fini_utils;
348 }
349
350 return 0;
351
352err_fini_utils:
353 tegra_asoc_utils_fini(&machine->util_data);
354err:
355 return ret;
356}
357
358static int tegra_wm8903_driver_remove(struct platform_device *pdev)
359{
360 struct snd_soc_card *card = platform_get_drvdata(pdev);
361 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
362
363 snd_soc_unregister_card(card);
364
365 tegra_asoc_utils_fini(&machine->util_data);
366
367 return 0;
368}
369
370static const struct of_device_id tegra_wm8903_of_match[] = {
371 { .compatible = "nvidia,tegra-audio-wm8903", },
372 {},
373};
374
375static struct platform_driver tegra_wm8903_driver = {
376 .driver = {
377 .name = DRV_NAME,
378 .pm = &snd_soc_pm_ops,
379 .of_match_table = tegra_wm8903_of_match,
380 },
381 .probe = tegra_wm8903_driver_probe,
382 .remove = tegra_wm8903_driver_remove,
383};
384module_platform_driver(tegra_wm8903_driver);
385
386MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
387MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
388MODULE_LICENSE("GPL");
389MODULE_ALIAS("platform:" DRV_NAME);
390MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match);
391
