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)
61 struct tegra_asoc_utils_data util_data;
62 struct tegra_wm8903_platform_data *pdata;
66 static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
67 struct snd_pcm_hw_params *params)
69 struct snd_soc_pcm_runtime *rtd = substream->private_data;
70 struct snd_soc_dai *codec_dai = rtd->codec_dai;
71 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
72 struct snd_soc_codec *codec = rtd->codec;
73 struct snd_soc_card *card = codec->card;
74 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
78 srate = params_rate(params);
89 /* FIXME: Codec only requires >= 3MHz if OSR==0 */
90 while (mclk < 6000000)
93 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");
117 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
120 dev_err(card->dev, "codec_dai clock not set\n");
127 static struct snd_soc_ops tegra_wm8903_ops = {
128 .hw_params = tegra_wm8903_hw_params,
131 static struct snd_soc_jack tegra_wm8903_hp_jack;
133 static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
135 .pin = "Headphone Jack",
136 .mask = SND_JACK_HEADPHONE,
140 static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
141 .name = "headphone detect",
142 .report = SND_JACK_HEADPHONE,
143 .debounce_time = 150,
147 static struct snd_soc_jack tegra_wm8903_mic_jack;
149 static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
152 .mask = SND_JACK_MICROPHONE,
156 static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
157 struct snd_kcontrol *k, int event)
159 struct snd_soc_dapm_context *dapm = w->dapm;
160 struct snd_soc_card *card = dapm->card;
161 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
162 struct tegra_wm8903_platform_data *pdata = machine->pdata;
164 if (!(machine->gpio_requested & GPIO_SPKR_EN))
167 gpio_set_value_cansleep(pdata->gpio_spkr_en,
168 SND_SOC_DAPM_EVENT_ON(event));
173 static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
174 struct snd_kcontrol *k, int event)
176 struct snd_soc_dapm_context *dapm = w->dapm;
177 struct snd_soc_card *card = dapm->card;
178 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
179 struct tegra_wm8903_platform_data *pdata = machine->pdata;
181 if (!(machine->gpio_requested & GPIO_HP_MUTE))
184 gpio_set_value_cansleep(pdata->gpio_hp_mute,
185 !SND_SOC_DAPM_EVENT_ON(event));
190 static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
191 SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
192 SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
193 SND_SOC_DAPM_MIC("Mic Jack", NULL),
196 static const struct snd_soc_dapm_route harmony_audio_map[] = {
197 {"Headphone Jack", NULL, "HPOUTR"},
198 {"Headphone Jack", NULL, "HPOUTL"},
199 {"Int Spk", NULL, "ROP"},
200 {"Int Spk", NULL, "RON"},
201 {"Int Spk", NULL, "LOP"},
202 {"Int Spk", NULL, "LON"},
203 {"Mic Bias", NULL, "Mic Jack"},
204 {"IN1L", NULL, "Mic Bias"},
207 static const struct snd_soc_dapm_route seaboard_audio_map[] = {
208 {"Headphone Jack", NULL, "HPOUTR"},
209 {"Headphone Jack", NULL, "HPOUTL"},
210 {"Int Spk", NULL, "ROP"},
211 {"Int Spk", NULL, "RON"},
212 {"Int Spk", NULL, "LOP"},
213 {"Int Spk", NULL, "LON"},
214 {"Mic Bias", NULL, "Mic Jack"},
215 {"IN1R", NULL, "Mic Bias"},
218 static const struct snd_soc_dapm_route kaen_audio_map[] = {
219 {"Headphone Jack", NULL, "HPOUTR"},
220 {"Headphone Jack", NULL, "HPOUTL"},
221 {"Int Spk", NULL, "ROP"},
222 {"Int Spk", NULL, "RON"},
223 {"Int Spk", NULL, "LOP"},
224 {"Int Spk", NULL, "LON"},
225 {"Mic Bias", NULL, "Mic Jack"},
226 {"IN2R", NULL, "Mic Bias"},
229 static const struct snd_soc_dapm_route aebl_audio_map[] = {
230 {"Headphone Jack", NULL, "HPOUTR"},
231 {"Headphone Jack", NULL, "HPOUTL"},
232 {"Int Spk", NULL, "LINEOUTR"},
233 {"Int Spk", NULL, "LINEOUTL"},
234 {"Mic Bias", NULL, "Mic Jack"},
235 {"IN1R", NULL, "Mic Bias"},
238 static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
239 SOC_DAPM_PIN_SWITCH("Int Spk"),
242 static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
244 struct snd_soc_codec *codec = rtd->codec;
245 struct snd_soc_dapm_context *dapm = &codec->dapm;
246 struct snd_soc_card *card = codec->card;
247 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
248 struct tegra_wm8903_platform_data *pdata = machine->pdata;
251 if (gpio_is_valid(pdata->gpio_spkr_en)) {
252 ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
254 dev_err(card->dev, "cannot get spkr_en gpio\n");
257 machine->gpio_requested |= GPIO_SPKR_EN;
259 gpio_direction_output(pdata->gpio_spkr_en, 0);
262 if (gpio_is_valid(pdata->gpio_hp_mute)) {
263 ret = gpio_request(pdata->gpio_hp_mute, "hp_mute");
265 dev_err(card->dev, "cannot get hp_mute gpio\n");
268 machine->gpio_requested |= GPIO_HP_MUTE;
270 gpio_direction_output(pdata->gpio_hp_mute, 0);
273 if (gpio_is_valid(pdata->gpio_int_mic_en)) {
274 ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
276 dev_err(card->dev, "cannot get int_mic_en gpio\n");
279 machine->gpio_requested |= GPIO_INT_MIC_EN;
281 /* Disable int mic; enable signal is active-high */
282 gpio_direction_output(pdata->gpio_int_mic_en, 0);
285 if (gpio_is_valid(pdata->gpio_ext_mic_en)) {
286 ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
288 dev_err(card->dev, "cannot get ext_mic_en gpio\n");
291 machine->gpio_requested |= GPIO_EXT_MIC_EN;
293 /* Enable ext mic; enable signal is active-low */
294 gpio_direction_output(pdata->gpio_ext_mic_en, 0);
297 if (gpio_is_valid(pdata->gpio_hp_det)) {
298 tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det;
299 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
300 &tegra_wm8903_hp_jack);
301 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack,
302 ARRAY_SIZE(tegra_wm8903_hp_jack_pins),
303 tegra_wm8903_hp_jack_pins);
304 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
306 &tegra_wm8903_hp_jack_gpio);
309 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
310 &tegra_wm8903_mic_jack);
311 snd_soc_jack_add_pins(&tegra_wm8903_mic_jack,
312 ARRAY_SIZE(tegra_wm8903_mic_jack_pins),
313 tegra_wm8903_mic_jack_pins);
314 wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
317 snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
319 /* FIXME: Calculate automatically based on DAPM routes? */
320 if (!machine_is_harmony() && !machine_is_ventana())
321 snd_soc_dapm_nc_pin(dapm, "IN1L");
322 if (!machine_is_seaboard() && !machine_is_aebl())
323 snd_soc_dapm_nc_pin(dapm, "IN1R");
324 snd_soc_dapm_nc_pin(dapm, "IN2L");
325 if (!machine_is_kaen())
326 snd_soc_dapm_nc_pin(dapm, "IN2R");
327 snd_soc_dapm_nc_pin(dapm, "IN3L");
328 snd_soc_dapm_nc_pin(dapm, "IN3R");
330 if (machine_is_aebl()) {
331 snd_soc_dapm_nc_pin(dapm, "LON");
332 snd_soc_dapm_nc_pin(dapm, "RON");
333 snd_soc_dapm_nc_pin(dapm, "ROP");
334 snd_soc_dapm_nc_pin(dapm, "LOP");
336 snd_soc_dapm_nc_pin(dapm, "LINEOUTR");
337 snd_soc_dapm_nc_pin(dapm, "LINEOUTL");
340 snd_soc_dapm_sync(dapm);
345 static struct snd_soc_dai_link tegra_wm8903_dai = {
347 .stream_name = "WM8903 PCM",
348 .codec_name = "wm8903.0-001a",
349 .platform_name = "tegra-pcm-audio",
350 .cpu_dai_name = "tegra-i2s.0",
351 .codec_dai_name = "wm8903-hifi",
352 .init = tegra_wm8903_init,
353 .ops = &tegra_wm8903_ops,
356 static struct snd_soc_card snd_soc_tegra_wm8903 = {
357 .name = "tegra-wm8903",
358 .dai_link = &tegra_wm8903_dai,
361 .controls = tegra_wm8903_controls,
362 .num_controls = ARRAY_SIZE(tegra_wm8903_controls),
363 .dapm_widgets = tegra_wm8903_dapm_widgets,
364 .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
367 static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev)
369 struct snd_soc_card *card = &snd_soc_tegra_wm8903;
370 struct tegra_wm8903 *machine;
371 struct tegra_wm8903_platform_data *pdata;
374 pdata = pdev->dev.platform_data;
376 dev_err(&pdev->dev, "No platform data supplied\n");
380 machine = kzalloc(sizeof(struct tegra_wm8903), GFP_KERNEL);
382 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
386 machine->pdata = pdata;
388 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
390 goto err_free_machine;
392 card->dev = &pdev->dev;
393 platform_set_drvdata(pdev, card);
394 snd_soc_card_set_drvdata(card, machine);
396 if (machine_is_harmony() || machine_is_ventana()) {
397 card->dapm_routes = harmony_audio_map;
398 card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map);
399 } else if (machine_is_seaboard()) {
400 card->dapm_routes = seaboard_audio_map;
401 card->num_dapm_routes = ARRAY_SIZE(seaboard_audio_map);
402 } else if (machine_is_kaen()) {
403 card->dapm_routes = kaen_audio_map;
404 card->num_dapm_routes = ARRAY_SIZE(kaen_audio_map);
406 card->dapm_routes = aebl_audio_map;
407 card->num_dapm_routes = ARRAY_SIZE(aebl_audio_map);
410 ret = snd_soc_register_card(card);
412 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
420 tegra_asoc_utils_fini(&machine->util_data);
426 static int __devexit tegra_wm8903_driver_remove(struct platform_device *pdev)
428 struct snd_soc_card *card = platform_get_drvdata(pdev);
429 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
430 struct tegra_wm8903_platform_data *pdata = machine->pdata;
432 snd_soc_unregister_card(card);
434 tegra_asoc_utils_fini(&machine->util_data);
436 if (machine->gpio_requested & GPIO_EXT_MIC_EN)
437 gpio_free(pdata->gpio_ext_mic_en);
438 if (machine->gpio_requested & GPIO_INT_MIC_EN)
439 gpio_free(pdata->gpio_int_mic_en);
440 if (machine->gpio_requested & GPIO_HP_MUTE)
441 gpio_free(pdata->gpio_hp_mute);
442 if (machine->gpio_requested & GPIO_SPKR_EN)
443 gpio_free(pdata->gpio_spkr_en);
450 static struct platform_driver tegra_wm8903_driver = {
453 .owner = THIS_MODULE,
454 .pm = &snd_soc_pm_ops,
456 .probe = tegra_wm8903_driver_probe,
457 .remove = __devexit_p(tegra_wm8903_driver_remove),
460 static int __init tegra_wm8903_modinit(void)
462 return platform_driver_register(&tegra_wm8903_driver);
464 module_init(tegra_wm8903_modinit);
466 static void __exit tegra_wm8903_modexit(void)
468 platform_driver_unregister(&tegra_wm8903_driver);
470 module_exit(tegra_wm8903_modexit);
472 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
473 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
474 MODULE_LICENSE("GPL");
475 MODULE_ALIAS("platform:" DRV_NAME);