2 * tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec.
4 * Author: Stephen Warren <swarren@nvidia.com>
5 * Copyright (C) 2010-2012 - 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 <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>
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 #include <sound/tegra_wm8903.h>
44 #include "../codecs/wm8903.h"
46 #include "tegra_asoc_utils.h"
48 #define DRV_NAME "tegra-snd-wm8903"
51 struct tegra_wm8903_platform_data pdata;
52 struct tegra_asoc_utils_data util_data;
55 static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
56 struct snd_pcm_hw_params *params)
58 struct snd_soc_pcm_runtime *rtd = substream->private_data;
59 struct snd_soc_dai *codec_dai = rtd->codec_dai;
60 struct snd_soc_codec *codec = codec_dai->codec;
61 struct snd_soc_card *card = codec->card;
62 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
66 srate = params_rate(params);
77 /* FIXME: Codec only requires >= 3MHz if OSR==0 */
78 while (mclk < 6000000)
81 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
83 dev_err(card->dev, "Can't configure clocks\n");
87 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
90 dev_err(card->dev, "codec_dai clock not set\n");
97 static struct snd_soc_ops tegra_wm8903_ops = {
98 .hw_params = tegra_wm8903_hw_params,
101 static struct snd_soc_jack tegra_wm8903_hp_jack;
103 static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
105 .pin = "Headphone Jack",
106 .mask = SND_JACK_HEADPHONE,
110 static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
111 .name = "headphone detect",
112 .report = SND_JACK_HEADPHONE,
113 .debounce_time = 150,
117 static struct snd_soc_jack tegra_wm8903_mic_jack;
119 static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
122 .mask = SND_JACK_MICROPHONE,
126 static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
127 struct snd_kcontrol *k, int event)
129 struct snd_soc_dapm_context *dapm = w->dapm;
130 struct snd_soc_card *card = dapm->card;
131 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
132 struct tegra_wm8903_platform_data *pdata = &machine->pdata;
134 if (!gpio_is_valid(pdata->gpio_spkr_en))
137 gpio_set_value_cansleep(pdata->gpio_spkr_en,
138 SND_SOC_DAPM_EVENT_ON(event));
143 static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
144 struct snd_kcontrol *k, int event)
146 struct snd_soc_dapm_context *dapm = w->dapm;
147 struct snd_soc_card *card = dapm->card;
148 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
149 struct tegra_wm8903_platform_data *pdata = &machine->pdata;
151 if (!gpio_is_valid(pdata->gpio_hp_mute))
154 gpio_set_value_cansleep(pdata->gpio_hp_mute,
155 !SND_SOC_DAPM_EVENT_ON(event));
160 static 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),
166 static const struct snd_soc_dapm_route harmony_audio_map[] = {
167 {"Headphone Jack", NULL, "HPOUTR"},
168 {"Headphone Jack", NULL, "HPOUTL"},
169 {"Int Spk", NULL, "ROP"},
170 {"Int Spk", NULL, "RON"},
171 {"Int Spk", NULL, "LOP"},
172 {"Int Spk", NULL, "LON"},
173 {"Mic Jack", NULL, "MICBIAS"},
174 {"IN1L", NULL, "Mic Jack"},
177 static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
178 SOC_DAPM_PIN_SWITCH("Int Spk"),
181 static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
183 struct snd_soc_dai *codec_dai = rtd->codec_dai;
184 struct snd_soc_codec *codec = codec_dai->codec;
185 struct snd_soc_dapm_context *dapm = &codec->dapm;
186 struct snd_soc_card *card = codec->card;
187 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
188 struct tegra_wm8903_platform_data *pdata = &machine->pdata;
190 if (gpio_is_valid(pdata->gpio_hp_det)) {
191 tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det;
192 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
193 &tegra_wm8903_hp_jack);
194 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack,
195 ARRAY_SIZE(tegra_wm8903_hp_jack_pins),
196 tegra_wm8903_hp_jack_pins);
197 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
199 &tegra_wm8903_hp_jack_gpio);
202 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
203 &tegra_wm8903_mic_jack);
204 snd_soc_jack_add_pins(&tegra_wm8903_mic_jack,
205 ARRAY_SIZE(tegra_wm8903_mic_jack_pins),
206 tegra_wm8903_mic_jack_pins);
207 wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
210 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
215 static int tegra_wm8903_remove(struct snd_soc_card *card)
217 struct snd_soc_pcm_runtime *rtd = &(card->rtd[0]);
218 struct snd_soc_dai *codec_dai = rtd->codec_dai;
219 struct snd_soc_codec *codec = codec_dai->codec;
221 wm8903_mic_detect(codec, NULL, 0, 0);
226 static struct snd_soc_dai_link tegra_wm8903_dai = {
228 .stream_name = "WM8903 PCM",
229 .codec_name = "wm8903.0-001a",
230 .platform_name = "tegra20-i2s.0",
231 .cpu_dai_name = "tegra20-i2s.0",
232 .codec_dai_name = "wm8903-hifi",
233 .init = tegra_wm8903_init,
234 .ops = &tegra_wm8903_ops,
235 .dai_fmt = SND_SOC_DAIFMT_I2S |
236 SND_SOC_DAIFMT_NB_NF |
237 SND_SOC_DAIFMT_CBS_CFS,
240 static struct snd_soc_card snd_soc_tegra_wm8903 = {
241 .name = "tegra-wm8903",
242 .owner = THIS_MODULE,
243 .dai_link = &tegra_wm8903_dai,
246 .remove = tegra_wm8903_remove,
248 .controls = tegra_wm8903_controls,
249 .num_controls = ARRAY_SIZE(tegra_wm8903_controls),
250 .dapm_widgets = tegra_wm8903_dapm_widgets,
251 .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
252 .fully_routed = true,
255 static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev)
257 struct device_node *np = pdev->dev.of_node;
258 struct snd_soc_card *card = &snd_soc_tegra_wm8903;
259 struct tegra_wm8903 *machine;
260 struct tegra_wm8903_platform_data *pdata;
263 if (!pdev->dev.platform_data && !pdev->dev.of_node) {
264 dev_err(&pdev->dev, "No platform data supplied\n");
268 machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903),
271 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
275 pdata = &machine->pdata;
277 card->dev = &pdev->dev;
278 platform_set_drvdata(pdev, card);
279 snd_soc_card_set_drvdata(card, machine);
281 if (pdev->dev.platform_data) {
282 memcpy(pdata, card->dev->platform_data, sizeof(*pdata));
284 pdata->gpio_spkr_en = of_get_named_gpio(np,
285 "nvidia,spkr-en-gpios", 0);
286 if (pdata->gpio_spkr_en == -EPROBE_DEFER)
287 return -EPROBE_DEFER;
289 pdata->gpio_hp_mute = of_get_named_gpio(np,
290 "nvidia,hp-mute-gpios", 0);
291 if (pdata->gpio_hp_mute == -EPROBE_DEFER)
292 return -EPROBE_DEFER;
294 pdata->gpio_hp_det = of_get_named_gpio(np,
295 "nvidia,hp-det-gpios", 0);
296 if (pdata->gpio_hp_det == -EPROBE_DEFER)
297 return -EPROBE_DEFER;
299 pdata->gpio_int_mic_en = of_get_named_gpio(np,
300 "nvidia,int-mic-en-gpios", 0);
301 if (pdata->gpio_int_mic_en == -EPROBE_DEFER)
302 return -EPROBE_DEFER;
304 pdata->gpio_ext_mic_en = of_get_named_gpio(np,
305 "nvidia,ext-mic-en-gpios", 0);
306 if (pdata->gpio_ext_mic_en == -EPROBE_DEFER)
307 return -EPROBE_DEFER;
311 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
315 ret = snd_soc_of_parse_audio_routing(card,
316 "nvidia,audio-routing");
320 tegra_wm8903_dai.codec_name = NULL;
321 tegra_wm8903_dai.codec_of_node = of_parse_phandle(np,
322 "nvidia,audio-codec", 0);
323 if (!tegra_wm8903_dai.codec_of_node) {
325 "Property 'nvidia,audio-codec' missing or invalid\n");
330 tegra_wm8903_dai.cpu_dai_name = NULL;
331 tegra_wm8903_dai.cpu_of_node = of_parse_phandle(np,
332 "nvidia,i2s-controller", 0);
333 if (!tegra_wm8903_dai.cpu_of_node) {
335 "Property 'nvidia,i2s-controller' missing or invalid\n");
340 tegra_wm8903_dai.platform_name = NULL;
341 tegra_wm8903_dai.platform_of_node =
342 tegra_wm8903_dai.cpu_of_node;
344 card->dapm_routes = harmony_audio_map;
345 card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map);
348 if (gpio_is_valid(pdata->gpio_spkr_en)) {
349 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_spkr_en,
350 GPIOF_OUT_INIT_LOW, "spkr_en");
352 dev_err(card->dev, "cannot get spkr_en gpio\n");
357 if (gpio_is_valid(pdata->gpio_hp_mute)) {
358 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_hp_mute,
359 GPIOF_OUT_INIT_HIGH, "hp_mute");
361 dev_err(card->dev, "cannot get hp_mute gpio\n");
366 if (gpio_is_valid(pdata->gpio_int_mic_en)) {
367 /* Disable int mic; enable signal is active-high */
368 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_int_mic_en,
369 GPIOF_OUT_INIT_LOW, "int_mic_en");
371 dev_err(card->dev, "cannot get int_mic_en gpio\n");
376 if (gpio_is_valid(pdata->gpio_ext_mic_en)) {
377 /* Enable ext mic; enable signal is active-low */
378 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_ext_mic_en,
379 GPIOF_OUT_INIT_LOW, "ext_mic_en");
381 dev_err(card->dev, "cannot get ext_mic_en gpio\n");
386 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
390 ret = snd_soc_register_card(card);
392 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
400 tegra_asoc_utils_fini(&machine->util_data);
405 static int __devexit tegra_wm8903_driver_remove(struct platform_device *pdev)
407 struct snd_soc_card *card = platform_get_drvdata(pdev);
408 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
410 snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack, 1,
411 &tegra_wm8903_hp_jack_gpio);
413 snd_soc_unregister_card(card);
415 tegra_asoc_utils_fini(&machine->util_data);
420 static const struct of_device_id tegra_wm8903_of_match[] __devinitconst = {
421 { .compatible = "nvidia,tegra-audio-wm8903", },
425 static struct platform_driver tegra_wm8903_driver = {
428 .owner = THIS_MODULE,
429 .pm = &snd_soc_pm_ops,
430 .of_match_table = tegra_wm8903_of_match,
432 .probe = tegra_wm8903_driver_probe,
433 .remove = __devexit_p(tegra_wm8903_driver_remove),
435 module_platform_driver(tegra_wm8903_driver);
437 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
438 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
439 MODULE_LICENSE("GPL");
440 MODULE_ALIAS("platform:" DRV_NAME);
441 MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match);