2 * harmony.c - Harmony machine ASoC driver
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/harmony_audio.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-harmony"
55 #define GPIO_SPKR_EN BIT(0)
56 #define GPIO_INT_MIC_EN BIT(1)
57 #define GPIO_EXT_MIC_EN BIT(2)
59 struct tegra_harmony {
60 struct tegra_asoc_utils_data util_data;
61 struct harmony_audio_platform_data *pdata;
65 static int harmony_asoc_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_harmony *harmony = 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(&harmony->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 harmony_asoc_ops = {
130 .hw_params = harmony_asoc_hw_params,
133 static struct snd_soc_jack harmony_hp_jack;
135 static struct snd_soc_jack_pin harmony_hp_jack_pins[] = {
137 .pin = "Headphone Jack",
138 .mask = SND_JACK_HEADPHONE,
142 static struct snd_soc_jack_gpio harmony_hp_jack_gpios[] = {
144 .name = "headphone detect",
145 .report = SND_JACK_HEADPHONE,
146 .debounce_time = 150,
151 static struct snd_soc_jack harmony_mic_jack;
153 static struct snd_soc_jack_pin harmony_mic_jack_pins[] = {
156 .mask = SND_JACK_MICROPHONE,
160 static int harmony_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_harmony *harmony = snd_soc_card_get_drvdata(card);
166 struct harmony_audio_platform_data *pdata = harmony->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 harmony_dapm_widgets[] = {
175 SND_SOC_DAPM_SPK("Int Spk", harmony_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 harmony_controls[] = {
192 SOC_DAPM_PIN_SWITCH("Int Spk"),
195 static int harmony_asoc_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_harmony *harmony = snd_soc_card_get_drvdata(card);
201 struct harmony_audio_platform_data *pdata = harmony->pdata;
204 ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
206 dev_err(card->dev, "cannot get spkr_en gpio\n");
209 harmony->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 harmony->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 harmony->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, harmony_controls,
234 ARRAY_SIZE(harmony_controls));
238 snd_soc_dapm_new_controls(dapm, harmony_dapm_widgets,
239 ARRAY_SIZE(harmony_dapm_widgets));
241 snd_soc_dapm_add_routes(dapm, harmony_audio_map,
242 ARRAY_SIZE(harmony_audio_map));
244 harmony_hp_jack_gpios[0].gpio = pdata->gpio_hp_det;
245 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
247 snd_soc_jack_add_pins(&harmony_hp_jack,
248 ARRAY_SIZE(harmony_hp_jack_pins),
249 harmony_hp_jack_pins);
250 snd_soc_jack_add_gpios(&harmony_hp_jack,
251 ARRAY_SIZE(harmony_hp_jack_gpios),
252 harmony_hp_jack_gpios);
254 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
256 snd_soc_jack_add_pins(&harmony_mic_jack,
257 ARRAY_SIZE(harmony_mic_jack_pins),
258 harmony_mic_jack_pins);
259 wm8903_mic_detect(codec, &harmony_mic_jack, SND_JACK_MICROPHONE, 0);
261 snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
263 snd_soc_dapm_nc_pin(dapm, "IN3L");
264 snd_soc_dapm_nc_pin(dapm, "IN3R");
265 snd_soc_dapm_nc_pin(dapm, "LINEOUTL");
266 snd_soc_dapm_nc_pin(dapm, "LINEOUTR");
268 snd_soc_dapm_sync(dapm);
273 static struct snd_soc_dai_link harmony_wm8903_dai = {
275 .stream_name = "WM8903 PCM",
276 .codec_name = "wm8903.0-001a",
277 .platform_name = "tegra-pcm-audio",
278 .cpu_dai_name = "tegra-i2s.0",
279 .codec_dai_name = "wm8903-hifi",
280 .init = harmony_asoc_init,
281 .ops = &harmony_asoc_ops,
284 static struct snd_soc_card snd_soc_harmony = {
285 .name = "tegra-harmony",
286 .dai_link = &harmony_wm8903_dai,
290 static __devinit int tegra_snd_harmony_probe(struct platform_device *pdev)
292 struct snd_soc_card *card = &snd_soc_harmony;
293 struct tegra_harmony *harmony;
294 struct harmony_audio_platform_data *pdata;
297 if (!machine_is_harmony()) {
298 dev_err(&pdev->dev, "Not running on Tegra Harmony!\n");
302 pdata = pdev->dev.platform_data;
304 dev_err(&pdev->dev, "no platform data supplied\n");
308 harmony = kzalloc(sizeof(struct tegra_harmony), GFP_KERNEL);
310 dev_err(&pdev->dev, "Can't allocate tegra_harmony\n");
314 harmony->pdata = pdata;
316 ret = tegra_asoc_utils_init(&harmony->util_data, &pdev->dev);
318 goto err_free_harmony;
320 card->dev = &pdev->dev;
321 platform_set_drvdata(pdev, card);
322 snd_soc_card_set_drvdata(card, harmony);
324 ret = snd_soc_register_card(card);
326 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
328 goto err_clear_drvdata;
334 snd_soc_card_set_drvdata(card, NULL);
335 platform_set_drvdata(pdev, NULL);
337 tegra_asoc_utils_fini(&harmony->util_data);
343 static int __devexit tegra_snd_harmony_remove(struct platform_device *pdev)
345 struct snd_soc_card *card = platform_get_drvdata(pdev);
346 struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
347 struct harmony_audio_platform_data *pdata = harmony->pdata;
349 snd_soc_unregister_card(card);
351 snd_soc_card_set_drvdata(card, NULL);
352 platform_set_drvdata(pdev, NULL);
355 tegra_asoc_utils_fini(&harmony->util_data);
357 if (harmony->gpio_requested & GPIO_EXT_MIC_EN)
358 gpio_free(pdata->gpio_ext_mic_en);
359 if (harmony->gpio_requested & GPIO_INT_MIC_EN)
360 gpio_free(pdata->gpio_int_mic_en);
361 if (harmony->gpio_requested & GPIO_SPKR_EN)
362 gpio_free(pdata->gpio_spkr_en);
369 static struct platform_driver tegra_snd_harmony_driver = {
372 .owner = THIS_MODULE,
374 .probe = tegra_snd_harmony_probe,
375 .remove = __devexit_p(tegra_snd_harmony_remove),
378 static int __init snd_tegra_harmony_init(void)
380 return platform_driver_register(&tegra_snd_harmony_driver);
382 module_init(snd_tegra_harmony_init);
384 static void __exit snd_tegra_harmony_exit(void)
386 platform_driver_unregister(&tegra_snd_harmony_driver);
388 module_exit(snd_tegra_harmony_exit);
390 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
391 MODULE_DESCRIPTION("Harmony machine ASoC driver");
392 MODULE_LICENSE("GPL");
393 MODULE_ALIAS("platform:" DRV_NAME);