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)
59 #define GPIO_HP_DET BIT(4)
62 struct tegra_asoc_utils_data util_data;
63 struct tegra_wm8903_platform_data *pdata;
67 static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
68 struct snd_pcm_hw_params *params)
70 struct snd_soc_pcm_runtime *rtd = substream->private_data;
71 struct snd_soc_dai *codec_dai = rtd->codec_dai;
72 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
73 struct snd_soc_codec *codec = rtd->codec;
74 struct snd_soc_card *card = codec->card;
75 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
79 srate = params_rate(params);
90 /* FIXME: Codec only requires >= 3MHz if OSR==0 */
91 while (mclk < 6000000)
94 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");
118 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
121 dev_err(card->dev, "codec_dai clock not set\n");
128 static struct snd_soc_ops tegra_wm8903_ops = {
129 .hw_params = tegra_wm8903_hw_params,
132 static struct snd_soc_jack tegra_wm8903_hp_jack;
134 static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
136 .pin = "Headphone Jack",
137 .mask = SND_JACK_HEADPHONE,
141 static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
142 .name = "headphone detect",
143 .report = SND_JACK_HEADPHONE,
144 .debounce_time = 150,
148 static struct snd_soc_jack tegra_wm8903_mic_jack;
150 static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
153 .mask = SND_JACK_MICROPHONE,
157 static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
158 struct snd_kcontrol *k, int event)
160 struct snd_soc_dapm_context *dapm = w->dapm;
161 struct snd_soc_card *card = dapm->card;
162 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
163 struct tegra_wm8903_platform_data *pdata = machine->pdata;
165 if (!(machine->gpio_requested & GPIO_SPKR_EN))
168 gpio_set_value_cansleep(pdata->gpio_spkr_en,
169 SND_SOC_DAPM_EVENT_ON(event));
174 static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
175 struct snd_kcontrol *k, int event)
177 struct snd_soc_dapm_context *dapm = w->dapm;
178 struct snd_soc_card *card = dapm->card;
179 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
180 struct tegra_wm8903_platform_data *pdata = machine->pdata;
182 if (!(machine->gpio_requested & GPIO_HP_MUTE))
185 gpio_set_value_cansleep(pdata->gpio_hp_mute,
186 !SND_SOC_DAPM_EVENT_ON(event));
191 static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
192 SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
193 SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
194 SND_SOC_DAPM_MIC("Mic Jack", NULL),
197 static const struct snd_soc_dapm_route harmony_audio_map[] = {
198 {"Headphone Jack", NULL, "HPOUTR"},
199 {"Headphone Jack", NULL, "HPOUTL"},
200 {"Int Spk", NULL, "ROP"},
201 {"Int Spk", NULL, "RON"},
202 {"Int Spk", NULL, "LOP"},
203 {"Int Spk", NULL, "LON"},
204 {"Mic Jack", NULL, "MICBIAS"},
205 {"IN1L", NULL, "Mic Jack"},
208 static const struct snd_soc_dapm_route seaboard_audio_map[] = {
209 {"Headphone Jack", NULL, "HPOUTR"},
210 {"Headphone Jack", NULL, "HPOUTL"},
211 {"Int Spk", NULL, "ROP"},
212 {"Int Spk", NULL, "RON"},
213 {"Int Spk", NULL, "LOP"},
214 {"Int Spk", NULL, "LON"},
215 {"Mic Jack", NULL, "MICBIAS"},
216 {"IN1R", NULL, "Mic Jack"},
219 static const struct snd_soc_dapm_route kaen_audio_map[] = {
220 {"Headphone Jack", NULL, "HPOUTR"},
221 {"Headphone Jack", NULL, "HPOUTL"},
222 {"Int Spk", NULL, "ROP"},
223 {"Int Spk", NULL, "RON"},
224 {"Int Spk", NULL, "LOP"},
225 {"Int Spk", NULL, "LON"},
226 {"Mic Jack", NULL, "MICBIAS"},
227 {"IN2R", NULL, "Mic Jack"},
230 static const struct snd_soc_dapm_route aebl_audio_map[] = {
231 {"Headphone Jack", NULL, "HPOUTR"},
232 {"Headphone Jack", NULL, "HPOUTL"},
233 {"Int Spk", NULL, "LINEOUTR"},
234 {"Int Spk", NULL, "LINEOUTL"},
235 {"Mic Jack", NULL, "MICBIAS"},
236 {"IN1R", NULL, "Mic Jack"},
239 static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
240 SOC_DAPM_PIN_SWITCH("Int Spk"),
243 static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
245 struct snd_soc_codec *codec = rtd->codec;
246 struct snd_soc_dapm_context *dapm = &codec->dapm;
247 struct snd_soc_card *card = codec->card;
248 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
249 struct tegra_wm8903_platform_data *pdata = machine->pdata;
252 ret = tegra_das_connect_dap_to_dac(TEGRA_DAS_DAP_ID_1,
253 TEGRA_DAS_DAP_SEL_DAC1);
255 dev_err(card->dev, "Can't set up DAS DAP connection\n");
258 ret = tegra_das_connect_dac_to_dap(TEGRA_DAS_DAC_ID_1,
259 TEGRA_DAS_DAC_SEL_DAP1);
261 dev_err(card->dev, "Can't set up DAS DAC connection\n");
265 if (gpio_is_valid(pdata->gpio_spkr_en)) {
266 ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
268 dev_err(card->dev, "cannot get spkr_en gpio\n");
271 machine->gpio_requested |= GPIO_SPKR_EN;
273 gpio_direction_output(pdata->gpio_spkr_en, 0);
276 if (gpio_is_valid(pdata->gpio_hp_mute)) {
277 ret = gpio_request(pdata->gpio_hp_mute, "hp_mute");
279 dev_err(card->dev, "cannot get hp_mute gpio\n");
282 machine->gpio_requested |= GPIO_HP_MUTE;
284 gpio_direction_output(pdata->gpio_hp_mute, 1);
287 if (gpio_is_valid(pdata->gpio_int_mic_en)) {
288 ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
290 dev_err(card->dev, "cannot get int_mic_en gpio\n");
293 machine->gpio_requested |= GPIO_INT_MIC_EN;
295 /* Disable int mic; enable signal is active-high */
296 gpio_direction_output(pdata->gpio_int_mic_en, 0);
299 if (gpio_is_valid(pdata->gpio_ext_mic_en)) {
300 ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
302 dev_err(card->dev, "cannot get ext_mic_en gpio\n");
305 machine->gpio_requested |= GPIO_EXT_MIC_EN;
307 /* Enable ext mic; enable signal is active-low */
308 gpio_direction_output(pdata->gpio_ext_mic_en, 0);
311 if (gpio_is_valid(pdata->gpio_hp_det)) {
312 tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det;
313 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
314 &tegra_wm8903_hp_jack);
315 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack,
316 ARRAY_SIZE(tegra_wm8903_hp_jack_pins),
317 tegra_wm8903_hp_jack_pins);
318 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
320 &tegra_wm8903_hp_jack_gpio);
321 machine->gpio_requested |= GPIO_HP_DET;
324 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
325 &tegra_wm8903_mic_jack);
326 snd_soc_jack_add_pins(&tegra_wm8903_mic_jack,
327 ARRAY_SIZE(tegra_wm8903_mic_jack_pins),
328 tegra_wm8903_mic_jack_pins);
329 wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
332 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
337 static struct snd_soc_dai_link tegra_wm8903_dai = {
339 .stream_name = "WM8903 PCM",
340 .codec_name = "wm8903.0-001a",
341 .platform_name = "tegra-pcm-audio",
342 .cpu_dai_name = "tegra-i2s.0",
343 .codec_dai_name = "wm8903-hifi",
344 .init = tegra_wm8903_init,
345 .ops = &tegra_wm8903_ops,
348 static struct snd_soc_card snd_soc_tegra_wm8903 = {
349 .name = "tegra-wm8903",
350 .dai_link = &tegra_wm8903_dai,
353 .controls = tegra_wm8903_controls,
354 .num_controls = ARRAY_SIZE(tegra_wm8903_controls),
355 .dapm_widgets = tegra_wm8903_dapm_widgets,
356 .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
357 .fully_routed = true,
360 static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev)
362 struct snd_soc_card *card = &snd_soc_tegra_wm8903;
363 struct tegra_wm8903 *machine;
364 struct tegra_wm8903_platform_data *pdata;
367 pdata = pdev->dev.platform_data;
369 dev_err(&pdev->dev, "No platform data supplied\n");
373 machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903),
376 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
381 machine->pdata = pdata;
383 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
387 card->dev = &pdev->dev;
388 platform_set_drvdata(pdev, card);
389 snd_soc_card_set_drvdata(card, machine);
391 if (machine_is_harmony()) {
392 card->dapm_routes = harmony_audio_map;
393 card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map);
394 } else if (machine_is_seaboard()) {
395 card->dapm_routes = seaboard_audio_map;
396 card->num_dapm_routes = ARRAY_SIZE(seaboard_audio_map);
397 } else if (machine_is_kaen()) {
398 card->dapm_routes = kaen_audio_map;
399 card->num_dapm_routes = ARRAY_SIZE(kaen_audio_map);
401 card->dapm_routes = aebl_audio_map;
402 card->num_dapm_routes = ARRAY_SIZE(aebl_audio_map);
405 ret = snd_soc_register_card(card);
407 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
415 tegra_asoc_utils_fini(&machine->util_data);
420 static int __devexit tegra_wm8903_driver_remove(struct platform_device *pdev)
422 struct snd_soc_card *card = platform_get_drvdata(pdev);
423 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
424 struct tegra_wm8903_platform_data *pdata = machine->pdata;
426 if (machine->gpio_requested & GPIO_HP_DET)
427 snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack,
429 &tegra_wm8903_hp_jack_gpio);
430 if (machine->gpio_requested & GPIO_EXT_MIC_EN)
431 gpio_free(pdata->gpio_ext_mic_en);
432 if (machine->gpio_requested & GPIO_INT_MIC_EN)
433 gpio_free(pdata->gpio_int_mic_en);
434 if (machine->gpio_requested & GPIO_HP_MUTE)
435 gpio_free(pdata->gpio_hp_mute);
436 if (machine->gpio_requested & GPIO_SPKR_EN)
437 gpio_free(pdata->gpio_spkr_en);
438 machine->gpio_requested = 0;
440 snd_soc_unregister_card(card);
442 tegra_asoc_utils_fini(&machine->util_data);
447 static struct platform_driver tegra_wm8903_driver = {
450 .owner = THIS_MODULE,
451 .pm = &snd_soc_pm_ops,
453 .probe = tegra_wm8903_driver_probe,
454 .remove = __devexit_p(tegra_wm8903_driver_remove),
456 module_platform_driver(tegra_wm8903_driver);
458 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
459 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
460 MODULE_LICENSE("GPL");
461 MODULE_ALIAS("platform:" DRV_NAME);