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Diffstat (limited to 'sound/soc/tegra/harmony.c')
-rw-r--r--sound/soc/tegra/harmony.c393
1 files changed, 393 insertions, 0 deletions
diff --git a/sound/soc/tegra/harmony.c b/sound/soc/tegra/harmony.c
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1/*
2 * harmony.c - Harmony machine ASoC driver
3 *
4 * Author: Stephen Warren <swarren@nvidia.com>
5 * Copyright (C) 2010-2011 - NVIDIA, Inc.
6 *
7 * Based on code copyright/by:
8 *
9 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
10 *
11 * Copyright 2007 Wolfson Microelectronics PLC.
12 * Author: Graeme Gregory
13 * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
14 *
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.
18 *
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.
23 *
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
27 * 02110-1301 USA
28 *
29 */
30
31#include <asm/mach-types.h>
32
33#include <linux/module.h>
34#include <linux/platform_device.h>
35#include <linux/slab.h>
36#include <linux/gpio.h>
37
38#include <mach/harmony_audio.h>
39
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>
45
46#include "../codecs/wm8903.h"
47
48#include "tegra_das.h"
49#include "tegra_i2s.h"
50#include "tegra_pcm.h"
51#include "tegra_asoc_utils.h"
52
53#define DRV_NAME "tegra-snd-harmony"
54
55#define GPIO_SPKR_EN BIT(0)
56#define GPIO_INT_MIC_EN BIT(1)
57#define GPIO_EXT_MIC_EN BIT(2)
58
59struct tegra_harmony {
60 struct tegra_asoc_utils_data util_data;
61 struct harmony_audio_platform_data *pdata;
62 int gpio_requested;
63};
64
65static int harmony_asoc_hw_params(struct snd_pcm_substream *substream,
66 struct snd_pcm_hw_params *params)
67{
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;
75 int err;
76
77 srate = params_rate(params);
78 switch (srate) {
79 case 64000:
80 case 88200:
81 case 96000:
82 mclk = 128 * srate;
83 break;
84 default:
85 mclk = 256 * srate;
86 break;
87 }
88 /* FIXME: Codec only requires >= 3MHz if OSR==0 */
89 while (mclk < 6000000)
90 mclk *= 2;
91
92 err = tegra_asoc_utils_set_rate(&harmony->util_data, srate, mclk,
93 &mclk_change);
94 if (err < 0) {
95 dev_err(card->dev, "Can't configure clocks\n");
96 return err;
97 }
98
99 err = snd_soc_dai_set_fmt(codec_dai,
100 SND_SOC_DAIFMT_I2S |
101 SND_SOC_DAIFMT_NB_NF |
102 SND_SOC_DAIFMT_CBS_CFS);
103 if (err < 0) {
104 dev_err(card->dev, "codec_dai fmt not set\n");
105 return err;
106 }
107
108 err = snd_soc_dai_set_fmt(cpu_dai,
109 SND_SOC_DAIFMT_I2S |
110 SND_SOC_DAIFMT_NB_NF |
111 SND_SOC_DAIFMT_CBS_CFS);
112 if (err < 0) {
113 dev_err(card->dev, "cpu_dai fmt not set\n");
114 return err;
115 }
116
117 if (mclk_change) {
118 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
119 SND_SOC_CLOCK_IN);
120 if (err < 0) {
121 dev_err(card->dev, "codec_dai clock not set\n");
122 return err;
123 }
124 }
125
126 return 0;
127}
128
129static struct snd_soc_ops harmony_asoc_ops = {
130 .hw_params = harmony_asoc_hw_params,
131};
132
133static struct snd_soc_jack harmony_hp_jack;
134
135static struct snd_soc_jack_pin harmony_hp_jack_pins[] = {
136 {
137 .pin = "Headphone Jack",
138 .mask = SND_JACK_HEADPHONE,
139 },
140};
141
142static struct snd_soc_jack_gpio harmony_hp_jack_gpios[] = {
143 {
144 .name = "headphone detect",
145 .report = SND_JACK_HEADPHONE,
146 .debounce_time = 150,
147 .invert = 1,
148 }
149};
150
151static struct snd_soc_jack harmony_mic_jack;
152
153static struct snd_soc_jack_pin harmony_mic_jack_pins[] = {
154 {
155 .pin = "Mic Jack",
156 .mask = SND_JACK_MICROPHONE,
157 },
158};
159
160static int harmony_event_int_spk(struct snd_soc_dapm_widget *w,
161 struct snd_kcontrol *k, int event)
162{
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;
167
168 gpio_set_value_cansleep(pdata->gpio_spkr_en,
169 SND_SOC_DAPM_EVENT_ON(event));
170
171 return 0;
172}
173
174static 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),
178};
179
180static 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"},
189};
190
191static const struct snd_kcontrol_new harmony_controls[] = {
192 SOC_DAPM_PIN_SWITCH("Int Spk"),
193};
194
195static int harmony_asoc_init(struct snd_soc_pcm_runtime *rtd)
196{
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;
202 int ret;
203
204 ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
205 if (ret) {
206 dev_err(card->dev, "cannot get spkr_en gpio\n");
207 return ret;
208 }
209 harmony->gpio_requested |= GPIO_SPKR_EN;
210
211 gpio_direction_output(pdata->gpio_spkr_en, 0);
212
213 ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
214 if (ret) {
215 dev_err(card->dev, "cannot get int_mic_en gpio\n");
216 return ret;
217 }
218 harmony->gpio_requested |= GPIO_INT_MIC_EN;
219
220 /* Disable int mic; enable signal is active-high */
221 gpio_direction_output(pdata->gpio_int_mic_en, 0);
222
223 ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
224 if (ret) {
225 dev_err(card->dev, "cannot get ext_mic_en gpio\n");
226 return ret;
227 }
228 harmony->gpio_requested |= GPIO_EXT_MIC_EN;
229
230 /* Enable ext mic; enable signal is active-low */
231 gpio_direction_output(pdata->gpio_ext_mic_en, 0);
232
233 ret = snd_soc_add_controls(codec, harmony_controls,
234 ARRAY_SIZE(harmony_controls));
235 if (ret < 0)
236 return ret;
237
238 snd_soc_dapm_new_controls(dapm, harmony_dapm_widgets,
239 ARRAY_SIZE(harmony_dapm_widgets));
240
241 snd_soc_dapm_add_routes(dapm, harmony_audio_map,
242 ARRAY_SIZE(harmony_audio_map));
243
244 harmony_hp_jack_gpios[0].gpio = pdata->gpio_hp_det;
245 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
246 &harmony_hp_jack);
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);
253
254 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
255 &harmony_mic_jack);
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);
260
261 snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
262
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");
267
268 snd_soc_dapm_sync(dapm);
269
270 return 0;
271}
272
273static struct snd_soc_dai_link harmony_wm8903_dai = {
274 .name = "WM8903",
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,
282};
283
284static struct snd_soc_card snd_soc_harmony = {
285 .name = "tegra-harmony",
286 .dai_link = &harmony_wm8903_dai,
287 .num_links = 1,
288};
289
290static __devinit int tegra_snd_harmony_probe(struct platform_device *pdev)
291{
292 struct snd_soc_card *card = &snd_soc_harmony;
293 struct tegra_harmony *harmony;
294 struct harmony_audio_platform_data *pdata;
295 int ret;
296
297 if (!machine_is_harmony()) {
298 dev_err(&pdev->dev, "Not running on Tegra Harmony!\n");
299 return -ENODEV;
300 }
301
302 pdata = pdev->dev.platform_data;
303 if (!pdata) {
304 dev_err(&pdev->dev, "no platform data supplied\n");
305 return -EINVAL;
306 }
307
308 harmony = kzalloc(sizeof(struct tegra_harmony), GFP_KERNEL);
309 if (!harmony) {
310 dev_err(&pdev->dev, "Can't allocate tegra_harmony\n");
311 return -ENOMEM;
312 }
313
314 harmony->pdata = pdata;
315
316 ret = tegra_asoc_utils_init(&harmony->util_data, &pdev->dev);
317 if (ret)
318 goto err_free_harmony;
319
320 card->dev = &pdev->dev;
321 platform_set_drvdata(pdev, card);
322 snd_soc_card_set_drvdata(card, harmony);
323
324 ret = snd_soc_register_card(card);
325 if (ret) {
326 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
327 ret);
328 goto err_clear_drvdata;
329 }
330
331 return 0;
332
333err_clear_drvdata:
334 snd_soc_card_set_drvdata(card, NULL);
335 platform_set_drvdata(pdev, NULL);
336 card->dev = NULL;
337 tegra_asoc_utils_fini(&harmony->util_data);
338err_free_harmony:
339 kfree(harmony);
340 return ret;
341}
342
343static int __devexit tegra_snd_harmony_remove(struct platform_device *pdev)
344{
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;
348
349 snd_soc_unregister_card(card);
350
351 snd_soc_card_set_drvdata(card, NULL);
352 platform_set_drvdata(pdev, NULL);
353 card->dev = NULL;
354
355 tegra_asoc_utils_fini(&harmony->util_data);
356
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);
363
364 kfree(harmony);
365
366 return 0;
367}
368
369static struct platform_driver tegra_snd_harmony_driver = {
370 .driver = {
371 .name = DRV_NAME,
372 .owner = THIS_MODULE,
373 },
374 .probe = tegra_snd_harmony_probe,
375 .remove = __devexit_p(tegra_snd_harmony_remove),
376};
377
378static int __init snd_tegra_harmony_init(void)
379{
380 return platform_driver_register(&tegra_snd_harmony_driver);
381}
382module_init(snd_tegra_harmony_init);
383
384static void __exit snd_tegra_harmony_exit(void)
385{
386 platform_driver_unregister(&tegra_snd_harmony_driver);
387}
388module_exit(snd_tegra_harmony_exit);
389
390MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
391MODULE_DESCRIPTION("Harmony machine ASoC driver");
392MODULE_LICENSE("GPL");
393MODULE_ALIAS("platform:" DRV_NAME);