2 * tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec.
4 * Author: Stephen Warren <swarren@nvidia.com>
5 * Copyright (C) 2010-2011 - NVIDIA, Inc.
7 * Based on code copyright/by:
9 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
11 * Copyright 2007 Wolfson Microelectronics PLC.
12 * Author: Graeme Gregory
13 * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
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.
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.
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
31 #include <asm/mach-types.h>
33 #include <linux/module.h>
34 #include <linux/platform_device.h>
35 #include <linux/slab.h>
36 #include <linux/gpio.h>
38 #include <mach/tegra_wm8903_pdata.h>
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>
46 #include "../codecs/wm8903.h"
48 #include "tegra_das.h"
49 #include "tegra_i2s.h"
50 #include "tegra_pcm.h"
51 #include "tegra_asoc_utils.h"
53 #define DRV_NAME "tegra-snd-wm8903"
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)
61 struct tegra_asoc_utils_data util_data;
62 struct tegra_wm8903_platform_data *pdata;
66 static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
67 struct snd_pcm_hw_params *params)
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, mclk_change;
78 srate = params_rate(params);
89 /* FIXME: Codec only requires >= 3MHz if OSR==0 */
90 while (mclk < 6000000)
93 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk,
96 dev_err(card->dev, "Can't configure clocks\n");
100 err = snd_soc_dai_set_fmt(codec_dai,
102 SND_SOC_DAIFMT_NB_NF |
103 SND_SOC_DAIFMT_CBS_CFS);
105 dev_err(card->dev, "codec_dai fmt not set\n");
109 err = snd_soc_dai_set_fmt(cpu_dai,
111 SND_SOC_DAIFMT_NB_NF |
112 SND_SOC_DAIFMT_CBS_CFS);
114 dev_err(card->dev, "cpu_dai fmt not set\n");
119 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
122 dev_err(card->dev, "codec_dai clock not set\n");
130 static struct snd_soc_ops tegra_wm8903_ops = {
131 .hw_params = tegra_wm8903_hw_params,
134 static struct snd_soc_jack tegra_wm8903_hp_jack;
136 static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
138 .pin = "Headphone Jack",
139 .mask = SND_JACK_HEADPHONE,
143 static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
144 .name = "headphone detect",
145 .report = SND_JACK_HEADPHONE,
146 .debounce_time = 150,
150 static struct snd_soc_jack tegra_wm8903_mic_jack;
152 static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
155 .mask = SND_JACK_MICROPHONE,
159 static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
160 struct snd_kcontrol *k, int event)
162 struct snd_soc_codec *codec = w->codec;
163 struct snd_soc_card *card = codec->card;
164 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
165 struct tegra_wm8903_platform_data *pdata = machine->pdata;
167 if (!(machine->gpio_requested & GPIO_SPKR_EN))
170 gpio_set_value_cansleep(pdata->gpio_spkr_en,
171 SND_SOC_DAPM_EVENT_ON(event));
176 static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
177 struct snd_kcontrol *k, int event)
179 struct snd_soc_codec *codec = w->codec;
180 struct snd_soc_card *card = codec->card;
181 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
182 struct tegra_wm8903_platform_data *pdata = machine->pdata;
184 if (!(machine->gpio_requested & GPIO_HP_MUTE))
187 gpio_set_value_cansleep(pdata->gpio_hp_mute,
188 !SND_SOC_DAPM_EVENT_ON(event));
193 static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
194 SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
195 SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
196 SND_SOC_DAPM_MIC("Mic Jack", NULL),
199 static const struct snd_soc_dapm_route harmony_audio_map[] = {
200 {"Headphone Jack", NULL, "HPOUTR"},
201 {"Headphone Jack", NULL, "HPOUTL"},
202 {"Int Spk", NULL, "ROP"},
203 {"Int Spk", NULL, "RON"},
204 {"Int Spk", NULL, "LOP"},
205 {"Int Spk", NULL, "LON"},
206 {"Mic Bias", NULL, "Mic Jack"},
207 {"IN1L", NULL, "Mic Bias"},
210 static const struct snd_soc_dapm_route seaboard_audio_map[] = {
211 {"Headphone Jack", NULL, "HPOUTR"},
212 {"Headphone Jack", NULL, "HPOUTL"},
213 {"Int Spk", NULL, "ROP"},
214 {"Int Spk", NULL, "RON"},
215 {"Int Spk", NULL, "LOP"},
216 {"Int Spk", NULL, "LON"},
217 {"Mic Bias", NULL, "Mic Jack"},
218 {"IN1R", NULL, "Mic Bias"},
221 static const struct snd_soc_dapm_route kaen_audio_map[] = {
222 {"Headphone Jack", NULL, "HPOUTR"},
223 {"Headphone Jack", NULL, "HPOUTL"},
224 {"Int Spk", NULL, "ROP"},
225 {"Int Spk", NULL, "RON"},
226 {"Int Spk", NULL, "LOP"},
227 {"Int Spk", NULL, "LON"},
228 {"Mic Bias", NULL, "Mic Jack"},
229 {"IN2R", NULL, "Mic Bias"},
232 static const struct snd_soc_dapm_route aebl_audio_map[] = {
233 {"Headphone Jack", NULL, "HPOUTR"},
234 {"Headphone Jack", NULL, "HPOUTL"},
235 {"Int Spk", NULL, "LINEOUTR"},
236 {"Int Spk", NULL, "LINEOUTL"},
237 {"Mic Bias", NULL, "Mic Jack"},
238 {"IN1R", NULL, "Mic Bias"},
241 static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
242 SOC_DAPM_PIN_SWITCH("Int Spk"),
245 static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
247 struct snd_soc_codec *codec = rtd->codec;
248 struct snd_soc_dapm_context *dapm = &codec->dapm;
249 struct snd_soc_card *card = codec->card;
250 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
251 struct tegra_wm8903_platform_data *pdata = machine->pdata;
254 if (gpio_is_valid(pdata->gpio_spkr_en)) {
255 ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
257 dev_err(card->dev, "cannot get spkr_en gpio\n");
260 machine->gpio_requested |= GPIO_SPKR_EN;
262 gpio_direction_output(pdata->gpio_spkr_en, 0);
265 if (gpio_is_valid(pdata->gpio_hp_mute)) {
266 ret = gpio_request(pdata->gpio_hp_mute, "hp_mute");
268 dev_err(card->dev, "cannot get hp_mute gpio\n");
271 machine->gpio_requested |= GPIO_HP_MUTE;
273 gpio_direction_output(pdata->gpio_hp_mute, 0);
276 if (gpio_is_valid(pdata->gpio_int_mic_en)) {
277 ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
279 dev_err(card->dev, "cannot get int_mic_en gpio\n");
282 machine->gpio_requested |= GPIO_INT_MIC_EN;
284 /* Disable int mic; enable signal is active-high */
285 gpio_direction_output(pdata->gpio_int_mic_en, 0);
288 if (gpio_is_valid(pdata->gpio_ext_mic_en)) {
289 ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
291 dev_err(card->dev, "cannot get ext_mic_en gpio\n");
294 machine->gpio_requested |= GPIO_EXT_MIC_EN;
296 /* Enable ext mic; enable signal is active-low */
297 gpio_direction_output(pdata->gpio_ext_mic_en, 0);
300 ret = snd_soc_add_controls(codec, tegra_wm8903_controls,
301 ARRAY_SIZE(tegra_wm8903_controls));
305 snd_soc_dapm_new_controls(dapm, tegra_wm8903_dapm_widgets,
306 ARRAY_SIZE(tegra_wm8903_dapm_widgets));
308 if (machine_is_harmony() || machine_is_ventana()) {
309 snd_soc_dapm_add_routes(dapm, harmony_audio_map,
310 ARRAY_SIZE(harmony_audio_map));
311 } else if (machine_is_seaboard()) {
312 snd_soc_dapm_add_routes(dapm, seaboard_audio_map,
313 ARRAY_SIZE(seaboard_audio_map));
314 } else if (machine_is_kaen()) {
315 snd_soc_dapm_add_routes(dapm, kaen_audio_map,
316 ARRAY_SIZE(kaen_audio_map));
318 snd_soc_dapm_add_routes(dapm, aebl_audio_map,
319 ARRAY_SIZE(aebl_audio_map));
322 if (gpio_is_valid(pdata->gpio_hp_det)) {
323 tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det;
324 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
325 &tegra_wm8903_hp_jack);
326 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack,
327 ARRAY_SIZE(tegra_wm8903_hp_jack_pins),
328 tegra_wm8903_hp_jack_pins);
329 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
331 &tegra_wm8903_hp_jack_gpio);
334 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
335 &tegra_wm8903_mic_jack);
336 snd_soc_jack_add_pins(&tegra_wm8903_mic_jack,
337 ARRAY_SIZE(tegra_wm8903_mic_jack_pins),
338 tegra_wm8903_mic_jack_pins);
339 wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
342 snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
344 /* FIXME: Calculate automatically based on DAPM routes? */
345 if (!machine_is_harmony() && !machine_is_ventana())
346 snd_soc_dapm_nc_pin(dapm, "IN1L");
347 if (!machine_is_seaboard() && !machine_is_aebl())
348 snd_soc_dapm_nc_pin(dapm, "IN1R");
349 snd_soc_dapm_nc_pin(dapm, "IN2L");
350 if (!machine_is_kaen())
351 snd_soc_dapm_nc_pin(dapm, "IN2R");
352 snd_soc_dapm_nc_pin(dapm, "IN3L");
353 snd_soc_dapm_nc_pin(dapm, "IN3R");
355 if (machine_is_aebl()) {
356 snd_soc_dapm_nc_pin(dapm, "LON");
357 snd_soc_dapm_nc_pin(dapm, "RON");
358 snd_soc_dapm_nc_pin(dapm, "ROP");
359 snd_soc_dapm_nc_pin(dapm, "LOP");
361 snd_soc_dapm_nc_pin(dapm, "LINEOUTR");
362 snd_soc_dapm_nc_pin(dapm, "LINEOUTL");
365 snd_soc_dapm_sync(dapm);
370 static struct snd_soc_dai_link tegra_wm8903_dai = {
372 .stream_name = "WM8903 PCM",
373 .codec_name = "wm8903.0-001a",
374 .platform_name = "tegra-pcm-audio",
375 .cpu_dai_name = "tegra-i2s.0",
376 .codec_dai_name = "wm8903-hifi",
377 .init = tegra_wm8903_init,
378 .ops = &tegra_wm8903_ops,
381 static struct snd_soc_card snd_soc_tegra_wm8903 = {
382 .name = "tegra-wm8903",
383 .dai_link = &tegra_wm8903_dai,
387 static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev)
389 struct snd_soc_card *card = &snd_soc_tegra_wm8903;
390 struct tegra_wm8903 *machine;
391 struct tegra_wm8903_platform_data *pdata;
394 pdata = pdev->dev.platform_data;
396 dev_err(&pdev->dev, "No platform data supplied\n");
400 machine = kzalloc(sizeof(struct tegra_wm8903), GFP_KERNEL);
402 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
406 machine->pdata = pdata;
408 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
410 goto err_free_machine;
412 card->dev = &pdev->dev;
413 platform_set_drvdata(pdev, card);
414 snd_soc_card_set_drvdata(card, machine);
416 ret = snd_soc_register_card(card);
418 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
426 tegra_asoc_utils_fini(&machine->util_data);
432 static int __devexit tegra_wm8903_driver_remove(struct platform_device *pdev)
434 struct snd_soc_card *card = platform_get_drvdata(pdev);
435 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
436 struct tegra_wm8903_platform_data *pdata = machine->pdata;
438 snd_soc_unregister_card(card);
440 tegra_asoc_utils_fini(&machine->util_data);
442 if (machine->gpio_requested & GPIO_EXT_MIC_EN)
443 gpio_free(pdata->gpio_ext_mic_en);
444 if (machine->gpio_requested & GPIO_INT_MIC_EN)
445 gpio_free(pdata->gpio_int_mic_en);
446 if (machine->gpio_requested & GPIO_HP_MUTE)
447 gpio_free(pdata->gpio_hp_mute);
448 if (machine->gpio_requested & GPIO_SPKR_EN)
449 gpio_free(pdata->gpio_spkr_en);
456 static struct platform_driver tegra_wm8903_driver = {
459 .owner = THIS_MODULE,
460 .pm = &snd_soc_pm_ops,
462 .probe = tegra_wm8903_driver_probe,
463 .remove = __devexit_p(tegra_wm8903_driver_remove),
466 static int __init tegra_wm8903_modinit(void)
468 return platform_driver_register(&tegra_wm8903_driver);
470 module_init(tegra_wm8903_modinit);
472 static void __exit tegra_wm8903_modexit(void)
474 platform_driver_unregister(&tegra_wm8903_driver);
476 module_exit(tegra_wm8903_modexit);
478 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
479 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
480 MODULE_LICENSE("GPL");
481 MODULE_ALIAS("platform:" DRV_NAME);