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Diffstat (limited to 'sound/soc/tegra/tegra_wm8903.c')
-rw-r--r--sound/soc/tegra/tegra_wm8903.c475
1 files changed, 475 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra_wm8903.c b/sound/soc/tegra/tegra_wm8903.c
new file mode 100644
index 000000000000..0d6738a8b29a
--- /dev/null
+++ b/sound/soc/tegra/tegra_wm8903.c
@@ -0,0 +1,475 @@
1/*
2 * tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec.
3 *
4 * Author: Stephen Warren <swarren@nvidia.com>
5 * Copyright (C) 2010-2011 - NVIDIA, Inc.
6 *
7 * Based on code copyright/by:
8 *
9 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
10 *
11 * Copyright 2007 Wolfson Microelectronics PLC.
12 * Author: Graeme Gregory
13 * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * version 2 as published by the Free Software Foundation.
18 *
19 * This program is distributed in the hope that it will be useful, but
20 * WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 * General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
27 * 02110-1301 USA
28 *
29 */
30
31#include <asm/mach-types.h>
32
33#include <linux/module.h>
34#include <linux/platform_device.h>
35#include <linux/slab.h>
36#include <linux/gpio.h>
37
38#include <mach/tegra_wm8903_pdata.h>
39
40#include <sound/core.h>
41#include <sound/jack.h>
42#include <sound/pcm.h>
43#include <sound/pcm_params.h>
44#include <sound/soc.h>
45
46#include "../codecs/wm8903.h"
47
48#include "tegra_das.h"
49#include "tegra_i2s.h"
50#include "tegra_pcm.h"
51#include "tegra_asoc_utils.h"
52
53#define DRV_NAME "tegra-snd-wm8903"
54
55#define GPIO_SPKR_EN BIT(0)
56#define GPIO_HP_MUTE BIT(1)
57#define GPIO_INT_MIC_EN BIT(2)
58#define GPIO_EXT_MIC_EN BIT(3)
59
60struct tegra_wm8903 {
61 struct tegra_asoc_utils_data util_data;
62 struct tegra_wm8903_platform_data *pdata;
63 int gpio_requested;
64};
65
66static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
67 struct snd_pcm_hw_params *params)
68{
69 struct snd_soc_pcm_runtime *rtd = substream->private_data;
70 struct snd_soc_dai *codec_dai = rtd->codec_dai;
71 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
72 struct snd_soc_codec *codec = rtd->codec;
73 struct snd_soc_card *card = codec->card;
74 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
75 int srate, mclk;
76 int err;
77
78 srate = params_rate(params);
79 switch (srate) {
80 case 64000:
81 case 88200:
82 case 96000:
83 mclk = 128 * srate;
84 break;
85 default:
86 mclk = 256 * srate;
87 break;
88 }
89 /* FIXME: Codec only requires >= 3MHz if OSR==0 */
90 while (mclk < 6000000)
91 mclk *= 2;
92
93 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
94 if (err < 0) {
95 dev_err(card->dev, "Can't configure clocks\n");
96 return err;
97 }
98
99 err = snd_soc_dai_set_fmt(codec_dai,
100 SND_SOC_DAIFMT_I2S |
101 SND_SOC_DAIFMT_NB_NF |
102 SND_SOC_DAIFMT_CBS_CFS);
103 if (err < 0) {
104 dev_err(card->dev, "codec_dai fmt not set\n");
105 return err;
106 }
107
108 err = snd_soc_dai_set_fmt(cpu_dai,
109 SND_SOC_DAIFMT_I2S |
110 SND_SOC_DAIFMT_NB_NF |
111 SND_SOC_DAIFMT_CBS_CFS);
112 if (err < 0) {
113 dev_err(card->dev, "cpu_dai fmt not set\n");
114 return err;
115 }
116
117 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
118 SND_SOC_CLOCK_IN);
119 if (err < 0) {
120 dev_err(card->dev, "codec_dai clock not set\n");
121 return err;
122 }
123
124 return 0;
125}
126
127static struct snd_soc_ops tegra_wm8903_ops = {
128 .hw_params = tegra_wm8903_hw_params,
129};
130
131static struct snd_soc_jack tegra_wm8903_hp_jack;
132
133static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
134 {
135 .pin = "Headphone Jack",
136 .mask = SND_JACK_HEADPHONE,
137 },
138};
139
140static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
141 .name = "headphone detect",
142 .report = SND_JACK_HEADPHONE,
143 .debounce_time = 150,
144 .invert = 1,
145};
146
147static struct snd_soc_jack tegra_wm8903_mic_jack;
148
149static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
150 {
151 .pin = "Mic Jack",
152 .mask = SND_JACK_MICROPHONE,
153 },
154};
155
156static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
157 struct snd_kcontrol *k, int event)
158{
159 struct snd_soc_dapm_context *dapm = w->dapm;
160 struct snd_soc_card *card = dapm->card;
161 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
162 struct tegra_wm8903_platform_data *pdata = machine->pdata;
163
164 if (!(machine->gpio_requested & GPIO_SPKR_EN))
165 return 0;
166
167 gpio_set_value_cansleep(pdata->gpio_spkr_en,
168 SND_SOC_DAPM_EVENT_ON(event));
169
170 return 0;
171}
172
173static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
174 struct snd_kcontrol *k, int event)
175{
176 struct snd_soc_dapm_context *dapm = w->dapm;
177 struct snd_soc_card *card = dapm->card;
178 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
179 struct tegra_wm8903_platform_data *pdata = machine->pdata;
180
181 if (!(machine->gpio_requested & GPIO_HP_MUTE))
182 return 0;
183
184 gpio_set_value_cansleep(pdata->gpio_hp_mute,
185 !SND_SOC_DAPM_EVENT_ON(event));
186
187 return 0;
188}
189
190static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
191 SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
192 SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
193 SND_SOC_DAPM_MIC("Mic Jack", NULL),
194};
195
196static const struct snd_soc_dapm_route harmony_audio_map[] = {
197 {"Headphone Jack", NULL, "HPOUTR"},
198 {"Headphone Jack", NULL, "HPOUTL"},
199 {"Int Spk", NULL, "ROP"},
200 {"Int Spk", NULL, "RON"},
201 {"Int Spk", NULL, "LOP"},
202 {"Int Spk", NULL, "LON"},
203 {"Mic Bias", NULL, "Mic Jack"},
204 {"IN1L", NULL, "Mic Bias"},
205};
206
207static const struct snd_soc_dapm_route seaboard_audio_map[] = {
208 {"Headphone Jack", NULL, "HPOUTR"},
209 {"Headphone Jack", NULL, "HPOUTL"},
210 {"Int Spk", NULL, "ROP"},
211 {"Int Spk", NULL, "RON"},
212 {"Int Spk", NULL, "LOP"},
213 {"Int Spk", NULL, "LON"},
214 {"Mic Bias", NULL, "Mic Jack"},
215 {"IN1R", NULL, "Mic Bias"},
216};
217
218static const struct snd_soc_dapm_route kaen_audio_map[] = {
219 {"Headphone Jack", NULL, "HPOUTR"},
220 {"Headphone Jack", NULL, "HPOUTL"},
221 {"Int Spk", NULL, "ROP"},
222 {"Int Spk", NULL, "RON"},
223 {"Int Spk", NULL, "LOP"},
224 {"Int Spk", NULL, "LON"},
225 {"Mic Bias", NULL, "Mic Jack"},
226 {"IN2R", NULL, "Mic Bias"},
227};
228
229static const struct snd_soc_dapm_route aebl_audio_map[] = {
230 {"Headphone Jack", NULL, "HPOUTR"},
231 {"Headphone Jack", NULL, "HPOUTL"},
232 {"Int Spk", NULL, "LINEOUTR"},
233 {"Int Spk", NULL, "LINEOUTL"},
234 {"Mic Bias", NULL, "Mic Jack"},
235 {"IN1R", NULL, "Mic Bias"},
236};
237
238static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
239 SOC_DAPM_PIN_SWITCH("Int Spk"),
240};
241
242static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
243{
244 struct snd_soc_codec *codec = rtd->codec;
245 struct snd_soc_dapm_context *dapm = &codec->dapm;
246 struct snd_soc_card *card = codec->card;
247 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
248 struct tegra_wm8903_platform_data *pdata = machine->pdata;
249 int ret;
250
251 if (gpio_is_valid(pdata->gpio_spkr_en)) {
252 ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
253 if (ret) {
254 dev_err(card->dev, "cannot get spkr_en gpio\n");
255 return ret;
256 }
257 machine->gpio_requested |= GPIO_SPKR_EN;
258
259 gpio_direction_output(pdata->gpio_spkr_en, 0);
260 }
261
262 if (gpio_is_valid(pdata->gpio_hp_mute)) {
263 ret = gpio_request(pdata->gpio_hp_mute, "hp_mute");
264 if (ret) {
265 dev_err(card->dev, "cannot get hp_mute gpio\n");
266 return ret;
267 }
268 machine->gpio_requested |= GPIO_HP_MUTE;
269
270 gpio_direction_output(pdata->gpio_hp_mute, 0);
271 }
272
273 if (gpio_is_valid(pdata->gpio_int_mic_en)) {
274 ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
275 if (ret) {
276 dev_err(card->dev, "cannot get int_mic_en gpio\n");
277 return ret;
278 }
279 machine->gpio_requested |= GPIO_INT_MIC_EN;
280
281 /* Disable int mic; enable signal is active-high */
282 gpio_direction_output(pdata->gpio_int_mic_en, 0);
283 }
284
285 if (gpio_is_valid(pdata->gpio_ext_mic_en)) {
286 ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
287 if (ret) {
288 dev_err(card->dev, "cannot get ext_mic_en gpio\n");
289 return ret;
290 }
291 machine->gpio_requested |= GPIO_EXT_MIC_EN;
292
293 /* Enable ext mic; enable signal is active-low */
294 gpio_direction_output(pdata->gpio_ext_mic_en, 0);
295 }
296
297 if (gpio_is_valid(pdata->gpio_hp_det)) {
298 tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det;
299 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
300 &tegra_wm8903_hp_jack);
301 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack,
302 ARRAY_SIZE(tegra_wm8903_hp_jack_pins),
303 tegra_wm8903_hp_jack_pins);
304 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
305 1,
306 &tegra_wm8903_hp_jack_gpio);
307 }
308
309 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
310 &tegra_wm8903_mic_jack);
311 snd_soc_jack_add_pins(&tegra_wm8903_mic_jack,
312 ARRAY_SIZE(tegra_wm8903_mic_jack_pins),
313 tegra_wm8903_mic_jack_pins);
314 wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
315 0);
316
317 snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
318
319 /* FIXME: Calculate automatically based on DAPM routes? */
320 if (!machine_is_harmony() && !machine_is_ventana())
321 snd_soc_dapm_nc_pin(dapm, "IN1L");
322 if (!machine_is_seaboard() && !machine_is_aebl())
323 snd_soc_dapm_nc_pin(dapm, "IN1R");
324 snd_soc_dapm_nc_pin(dapm, "IN2L");
325 if (!machine_is_kaen())
326 snd_soc_dapm_nc_pin(dapm, "IN2R");
327 snd_soc_dapm_nc_pin(dapm, "IN3L");
328 snd_soc_dapm_nc_pin(dapm, "IN3R");
329
330 if (machine_is_aebl()) {
331 snd_soc_dapm_nc_pin(dapm, "LON");
332 snd_soc_dapm_nc_pin(dapm, "RON");
333 snd_soc_dapm_nc_pin(dapm, "ROP");
334 snd_soc_dapm_nc_pin(dapm, "LOP");
335 } else {
336 snd_soc_dapm_nc_pin(dapm, "LINEOUTR");
337 snd_soc_dapm_nc_pin(dapm, "LINEOUTL");
338 }
339
340 snd_soc_dapm_sync(dapm);
341
342 return 0;
343}
344
345static struct snd_soc_dai_link tegra_wm8903_dai = {
346 .name = "WM8903",
347 .stream_name = "WM8903 PCM",
348 .codec_name = "wm8903.0-001a",
349 .platform_name = "tegra-pcm-audio",
350 .cpu_dai_name = "tegra-i2s.0",
351 .codec_dai_name = "wm8903-hifi",
352 .init = tegra_wm8903_init,
353 .ops = &tegra_wm8903_ops,
354};
355
356static struct snd_soc_card snd_soc_tegra_wm8903 = {
357 .name = "tegra-wm8903",
358 .dai_link = &tegra_wm8903_dai,
359 .num_links = 1,
360
361 .controls = tegra_wm8903_controls,
362 .num_controls = ARRAY_SIZE(tegra_wm8903_controls),
363 .dapm_widgets = tegra_wm8903_dapm_widgets,
364 .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
365};
366
367static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev)
368{
369 struct snd_soc_card *card = &snd_soc_tegra_wm8903;
370 struct tegra_wm8903 *machine;
371 struct tegra_wm8903_platform_data *pdata;
372 int ret;
373
374 pdata = pdev->dev.platform_data;
375 if (!pdata) {
376 dev_err(&pdev->dev, "No platform data supplied\n");
377 return -EINVAL;
378 }
379
380 machine = kzalloc(sizeof(struct tegra_wm8903), GFP_KERNEL);
381 if (!machine) {
382 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
383 return -ENOMEM;
384 }
385
386 machine->pdata = pdata;
387
388 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
389 if (ret)
390 goto err_free_machine;
391
392 card->dev = &pdev->dev;
393 platform_set_drvdata(pdev, card);
394 snd_soc_card_set_drvdata(card, machine);
395
396 if (machine_is_harmony() || machine_is_ventana()) {
397 card->dapm_routes = harmony_audio_map;
398 card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map);
399 } else if (machine_is_seaboard()) {
400 card->dapm_routes = seaboard_audio_map;
401 card->num_dapm_routes = ARRAY_SIZE(seaboard_audio_map);
402 } else if (machine_is_kaen()) {
403 card->dapm_routes = kaen_audio_map;
404 card->num_dapm_routes = ARRAY_SIZE(kaen_audio_map);
405 } else {
406 card->dapm_routes = aebl_audio_map;
407 card->num_dapm_routes = ARRAY_SIZE(aebl_audio_map);
408 }
409
410 ret = snd_soc_register_card(card);
411 if (ret) {
412 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
413 ret);
414 goto err_fini_utils;
415 }
416
417 return 0;
418
419err_fini_utils:
420 tegra_asoc_utils_fini(&machine->util_data);
421err_free_machine:
422 kfree(machine);
423 return ret;
424}
425
426static int __devexit tegra_wm8903_driver_remove(struct platform_device *pdev)
427{
428 struct snd_soc_card *card = platform_get_drvdata(pdev);
429 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
430 struct tegra_wm8903_platform_data *pdata = machine->pdata;
431
432 snd_soc_unregister_card(card);
433
434 tegra_asoc_utils_fini(&machine->util_data);
435
436 if (machine->gpio_requested & GPIO_EXT_MIC_EN)
437 gpio_free(pdata->gpio_ext_mic_en);
438 if (machine->gpio_requested & GPIO_INT_MIC_EN)
439 gpio_free(pdata->gpio_int_mic_en);
440 if (machine->gpio_requested & GPIO_HP_MUTE)
441 gpio_free(pdata->gpio_hp_mute);
442 if (machine->gpio_requested & GPIO_SPKR_EN)
443 gpio_free(pdata->gpio_spkr_en);
444
445 kfree(machine);
446
447 return 0;
448}
449
450static struct platform_driver tegra_wm8903_driver = {
451 .driver = {
452 .name = DRV_NAME,
453 .owner = THIS_MODULE,
454 .pm = &snd_soc_pm_ops,
455 },
456 .probe = tegra_wm8903_driver_probe,
457 .remove = __devexit_p(tegra_wm8903_driver_remove),
458};
459
460static int __init tegra_wm8903_modinit(void)
461{
462 return platform_driver_register(&tegra_wm8903_driver);
463}
464module_init(tegra_wm8903_modinit);
465
466static void __exit tegra_wm8903_modexit(void)
467{
468 platform_driver_unregister(&tegra_wm8903_driver);
469}
470module_exit(tegra_wm8903_modexit);
471
472MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
473MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
474MODULE_LICENSE("GPL");
475MODULE_ALIAS("platform:" DRV_NAME);
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-07 06:10:10 -0400