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_INT_MIC_EN BIT(1)
57 #define GPIO_EXT_MIC_EN BIT(2)
60 struct tegra_asoc_utils_data util_data;
61 struct tegra_wm8903_platform_data *pdata;
65 static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
66 struct snd_pcm_hw_params *params)
68 struct snd_soc_pcm_runtime *rtd = substream->private_data;
69 struct snd_soc_dai *codec_dai = rtd->codec_dai;
70 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
71 struct snd_soc_codec *codec = rtd->codec;
72 struct snd_soc_card *card = codec->card;
73 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
74 int srate, mclk, mclk_change;
77 srate = params_rate(params);
88 /* FIXME: Codec only requires >= 3MHz if OSR==0 */
89 while (mclk < 6000000)
92 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk,
95 dev_err(card->dev, "Can't configure clocks\n");
99 err = snd_soc_dai_set_fmt(codec_dai,
101 SND_SOC_DAIFMT_NB_NF |
102 SND_SOC_DAIFMT_CBS_CFS);
104 dev_err(card->dev, "codec_dai fmt not set\n");
108 err = snd_soc_dai_set_fmt(cpu_dai,
110 SND_SOC_DAIFMT_NB_NF |
111 SND_SOC_DAIFMT_CBS_CFS);
113 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");
129 static struct snd_soc_ops tegra_wm8903_ops = {
130 .hw_params = tegra_wm8903_hw_params,
133 static struct snd_soc_jack tegra_wm8903_hp_jack;
135 static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
137 .pin = "Headphone Jack",
138 .mask = SND_JACK_HEADPHONE,
142 static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpios[] = {
144 .name = "headphone detect",
145 .report = SND_JACK_HEADPHONE,
146 .debounce_time = 150,
151 static struct snd_soc_jack tegra_wm8903_mic_jack;
153 static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
156 .mask = SND_JACK_MICROPHONE,
160 static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
161 struct snd_kcontrol *k, int event)
163 struct snd_soc_codec *codec = w->codec;
164 struct snd_soc_card *card = codec->card;
165 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
166 struct tegra_wm8903_platform_data *pdata = machine->pdata;
168 gpio_set_value_cansleep(pdata->gpio_spkr_en,
169 SND_SOC_DAPM_EVENT_ON(event));
174 static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
175 SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
176 SND_SOC_DAPM_HP("Headphone Jack", NULL),
177 SND_SOC_DAPM_MIC("Mic Jack", NULL),
180 static const struct snd_soc_dapm_route harmony_audio_map[] = {
181 {"Headphone Jack", NULL, "HPOUTR"},
182 {"Headphone Jack", NULL, "HPOUTL"},
183 {"Int Spk", NULL, "ROP"},
184 {"Int Spk", NULL, "RON"},
185 {"Int Spk", NULL, "LOP"},
186 {"Int Spk", NULL, "LON"},
187 {"Mic Bias", NULL, "Mic Jack"},
188 {"IN1L", NULL, "Mic Bias"},
191 static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
192 SOC_DAPM_PIN_SWITCH("Int Spk"),
195 static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
197 struct snd_soc_codec *codec = rtd->codec;
198 struct snd_soc_dapm_context *dapm = &codec->dapm;
199 struct snd_soc_card *card = codec->card;
200 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
201 struct tegra_wm8903_platform_data *pdata = machine->pdata;
204 ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
206 dev_err(card->dev, "cannot get spkr_en gpio\n");
209 machine->gpio_requested |= GPIO_SPKR_EN;
211 gpio_direction_output(pdata->gpio_spkr_en, 0);
213 ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
215 dev_err(card->dev, "cannot get int_mic_en gpio\n");
218 machine->gpio_requested |= GPIO_INT_MIC_EN;
220 /* Disable int mic; enable signal is active-high */
221 gpio_direction_output(pdata->gpio_int_mic_en, 0);
223 ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
225 dev_err(card->dev, "cannot get ext_mic_en gpio\n");
228 machine->gpio_requested |= GPIO_EXT_MIC_EN;
230 /* Enable ext mic; enable signal is active-low */
231 gpio_direction_output(pdata->gpio_ext_mic_en, 0);
233 ret = snd_soc_add_controls(codec, tegra_wm8903_controls,
234 ARRAY_SIZE(tegra_wm8903_controls));
238 snd_soc_dapm_new_controls(dapm, tegra_wm8903_dapm_widgets,
239 ARRAY_SIZE(tegra_wm8903_dapm_widgets));
241 snd_soc_dapm_add_routes(dapm, harmony_audio_map,
242 ARRAY_SIZE(harmony_audio_map));
244 tegra_wm8903_hp_jack_gpios[0].gpio = pdata->gpio_hp_det;
245 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
246 &tegra_wm8903_hp_jack);
247 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack,
248 ARRAY_SIZE(tegra_wm8903_hp_jack_pins),
249 tegra_wm8903_hp_jack_pins);
250 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
251 ARRAY_SIZE(tegra_wm8903_hp_jack_gpios),
252 tegra_wm8903_hp_jack_gpios);
254 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
255 &tegra_wm8903_mic_jack);
256 snd_soc_jack_add_pins(&tegra_wm8903_mic_jack,
257 ARRAY_SIZE(tegra_wm8903_mic_jack_pins),
258 tegra_wm8903_mic_jack_pins);
259 wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
262 snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
264 snd_soc_dapm_nc_pin(dapm, "IN3L");
265 snd_soc_dapm_nc_pin(dapm, "IN3R");
266 snd_soc_dapm_nc_pin(dapm, "LINEOUTL");
267 snd_soc_dapm_nc_pin(dapm, "LINEOUTR");
269 snd_soc_dapm_sync(dapm);
274 static struct snd_soc_dai_link tegra_wm8903_dai = {
276 .stream_name = "WM8903 PCM",
277 .codec_name = "wm8903.0-001a",
278 .platform_name = "tegra-pcm-audio",
279 .cpu_dai_name = "tegra-i2s.0",
280 .codec_dai_name = "wm8903-hifi",
281 .init = tegra_wm8903_init,
282 .ops = &tegra_wm8903_ops,
285 static struct snd_soc_card snd_soc_tegra_wm8903 = {
286 .name = "tegra-wm8903",
287 .dai_link = &tegra_wm8903_dai,
291 static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev)
293 struct snd_soc_card *card = &snd_soc_tegra_wm8903;
294 struct tegra_wm8903 *machine;
295 struct tegra_wm8903_platform_data *pdata;
298 if (!machine_is_harmony()) {
299 dev_err(&pdev->dev, "Not running on Tegra Harmony!\n");
303 pdata = pdev->dev.platform_data;
305 dev_err(&pdev->dev, "no platform data supplied\n");
309 machine = kzalloc(sizeof(struct tegra_wm8903), GFP_KERNEL);
311 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
315 machine->pdata = pdata;
317 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
319 goto err_free_machine;
321 card->dev = &pdev->dev;
322 platform_set_drvdata(pdev, card);
323 snd_soc_card_set_drvdata(card, machine);
325 ret = snd_soc_register_card(card);
327 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
329 goto err_clear_drvdata;
335 snd_soc_card_set_drvdata(card, NULL);
336 platform_set_drvdata(pdev, NULL);
338 tegra_asoc_utils_fini(&machine->util_data);
344 static int __devexit tegra_wm8903_driver_remove(struct platform_device *pdev)
346 struct snd_soc_card *card = platform_get_drvdata(pdev);
347 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
348 struct tegra_wm8903_platform_data *pdata = machine->pdata;
350 snd_soc_unregister_card(card);
352 snd_soc_card_set_drvdata(card, NULL);
353 platform_set_drvdata(pdev, NULL);
356 tegra_asoc_utils_fini(&machine->util_data);
358 if (machine->gpio_requested & GPIO_EXT_MIC_EN)
359 gpio_free(pdata->gpio_ext_mic_en);
360 if (machine->gpio_requested & GPIO_INT_MIC_EN)
361 gpio_free(pdata->gpio_int_mic_en);
362 if (machine->gpio_requested & GPIO_SPKR_EN)
363 gpio_free(pdata->gpio_spkr_en);
370 static struct platform_driver tegra_wm8903_driver = {
373 .owner = THIS_MODULE,
374 .pm = &snd_soc_pm_ops,
376 .probe = tegra_wm8903_driver_probe,
377 .remove = __devexit_p(tegra_wm8903_driver_remove),
380 static int __init tegra_wm8903_modinit(void)
382 return platform_driver_register(&tegra_wm8903_driver);
384 module_init(tegra_wm8903_modinit);
386 static void __exit tegra_wm8903_modexit(void)
388 platform_driver_unregister(&tegra_wm8903_driver);
390 module_exit(tegra_wm8903_modexit);
392 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
393 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
394 MODULE_LICENSE("GPL");
395 MODULE_ALIAS("platform:" DRV_NAME);