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 <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>
37 #include <linux/of_gpio.h>
39 #include <mach/tegra_wm8903_pdata.h>
41 #include <sound/core.h>
42 #include <sound/jack.h>
43 #include <sound/pcm.h>
44 #include <sound/pcm_params.h>
45 #include <sound/soc.h>
47 #include "../codecs/wm8903.h"
49 #include "tegra_asoc_utils.h"
51 #define DRV_NAME "tegra-snd-wm8903"
53 #define GPIO_SPKR_EN BIT(0)
54 #define GPIO_HP_MUTE BIT(1)
55 #define GPIO_INT_MIC_EN BIT(2)
56 #define GPIO_EXT_MIC_EN BIT(3)
57 #define GPIO_HP_DET BIT(4)
60 struct tegra_wm8903_platform_data pdata
;
61 struct tegra_asoc_utils_data util_data
;
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
);
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
);
94 dev_err(card
->dev
, "Can't configure clocks\n");
98 err
= snd_soc_dai_set_fmt(codec_dai
,
100 SND_SOC_DAIFMT_NB_NF
|
101 SND_SOC_DAIFMT_CBS_CFS
);
103 dev_err(card
->dev
, "codec_dai fmt not set\n");
107 err
= snd_soc_dai_set_fmt(cpu_dai
,
109 SND_SOC_DAIFMT_NB_NF
|
110 SND_SOC_DAIFMT_CBS_CFS
);
112 dev_err(card
->dev
, "cpu_dai fmt not set\n");
116 err
= snd_soc_dai_set_sysclk(codec_dai
, 0, mclk
,
119 dev_err(card
->dev
, "codec_dai clock not set\n");
126 static struct snd_soc_ops tegra_wm8903_ops
= {
127 .hw_params
= tegra_wm8903_hw_params
,
130 static struct snd_soc_jack tegra_wm8903_hp_jack
;
132 static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins
[] = {
134 .pin
= "Headphone Jack",
135 .mask
= SND_JACK_HEADPHONE
,
139 static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio
= {
140 .name
= "headphone detect",
141 .report
= SND_JACK_HEADPHONE
,
142 .debounce_time
= 150,
146 static struct snd_soc_jack tegra_wm8903_mic_jack
;
148 static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins
[] = {
151 .mask
= SND_JACK_MICROPHONE
,
155 static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget
*w
,
156 struct snd_kcontrol
*k
, int event
)
158 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
159 struct snd_soc_card
*card
= dapm
->card
;
160 struct tegra_wm8903
*machine
= snd_soc_card_get_drvdata(card
);
161 struct tegra_wm8903_platform_data
*pdata
= &machine
->pdata
;
163 if (!(machine
->gpio_requested
& GPIO_SPKR_EN
))
166 gpio_set_value_cansleep(pdata
->gpio_spkr_en
,
167 SND_SOC_DAPM_EVENT_ON(event
));
172 static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget
*w
,
173 struct snd_kcontrol
*k
, int event
)
175 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
176 struct snd_soc_card
*card
= dapm
->card
;
177 struct tegra_wm8903
*machine
= snd_soc_card_get_drvdata(card
);
178 struct tegra_wm8903_platform_data
*pdata
= &machine
->pdata
;
180 if (!(machine
->gpio_requested
& GPIO_HP_MUTE
))
183 gpio_set_value_cansleep(pdata
->gpio_hp_mute
,
184 !SND_SOC_DAPM_EVENT_ON(event
));
189 static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets
[] = {
190 SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk
),
191 SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp
),
192 SND_SOC_DAPM_MIC("Mic Jack", NULL
),
195 static const struct snd_soc_dapm_route harmony_audio_map
[] = {
196 {"Headphone Jack", NULL
, "HPOUTR"},
197 {"Headphone Jack", NULL
, "HPOUTL"},
198 {"Int Spk", NULL
, "ROP"},
199 {"Int Spk", NULL
, "RON"},
200 {"Int Spk", NULL
, "LOP"},
201 {"Int Spk", NULL
, "LON"},
202 {"Mic Jack", NULL
, "MICBIAS"},
203 {"IN1L", NULL
, "Mic Jack"},
206 static const struct snd_soc_dapm_route seaboard_audio_map
[] = {
207 {"Headphone Jack", NULL
, "HPOUTR"},
208 {"Headphone Jack", NULL
, "HPOUTL"},
209 {"Int Spk", NULL
, "ROP"},
210 {"Int Spk", NULL
, "RON"},
211 {"Int Spk", NULL
, "LOP"},
212 {"Int Spk", NULL
, "LON"},
213 {"Mic Jack", NULL
, "MICBIAS"},
214 {"IN1R", NULL
, "Mic Jack"},
217 static const struct snd_soc_dapm_route kaen_audio_map
[] = {
218 {"Headphone Jack", NULL
, "HPOUTR"},
219 {"Headphone Jack", NULL
, "HPOUTL"},
220 {"Int Spk", NULL
, "ROP"},
221 {"Int Spk", NULL
, "RON"},
222 {"Int Spk", NULL
, "LOP"},
223 {"Int Spk", NULL
, "LON"},
224 {"Mic Jack", NULL
, "MICBIAS"},
225 {"IN2R", NULL
, "Mic Jack"},
228 static const struct snd_soc_dapm_route aebl_audio_map
[] = {
229 {"Headphone Jack", NULL
, "HPOUTR"},
230 {"Headphone Jack", NULL
, "HPOUTL"},
231 {"Int Spk", NULL
, "LINEOUTR"},
232 {"Int Spk", NULL
, "LINEOUTL"},
233 {"Mic Jack", NULL
, "MICBIAS"},
234 {"IN1R", NULL
, "Mic Jack"},
237 static const struct snd_kcontrol_new tegra_wm8903_controls
[] = {
238 SOC_DAPM_PIN_SWITCH("Int Spk"),
241 static int tegra_wm8903_init(struct snd_soc_pcm_runtime
*rtd
)
243 struct snd_soc_codec
*codec
= rtd
->codec
;
244 struct snd_soc_dapm_context
*dapm
= &codec
->dapm
;
245 struct snd_soc_card
*card
= codec
->card
;
246 struct tegra_wm8903
*machine
= snd_soc_card_get_drvdata(card
);
247 struct tegra_wm8903_platform_data
*pdata
= &machine
->pdata
;
248 struct device_node
*np
= card
->dev
->of_node
;
251 if (card
->dev
->platform_data
) {
252 memcpy(pdata
, card
->dev
->platform_data
, sizeof(*pdata
));
255 * This part must be in init() rather than probe() in order to
256 * guarantee that the WM8903 has been probed, and hence its
257 * GPIO controller registered, which is a pre-condition for
258 * of_get_named_gpio() to be able to map the phandles in the
259 * properties to the controller node. Given this, all
260 * pdata handling is in init() for consistency.
262 pdata
->gpio_spkr_en
= of_get_named_gpio(np
,
263 "nvidia,spkr-en-gpios", 0);
264 pdata
->gpio_hp_mute
= of_get_named_gpio(np
,
265 "nvidia,hp-mute-gpios", 0);
266 pdata
->gpio_hp_det
= of_get_named_gpio(np
,
267 "nvidia,hp-det-gpios", 0);
268 pdata
->gpio_int_mic_en
= of_get_named_gpio(np
,
269 "nvidia,int-mic-en-gpios", 0);
270 pdata
->gpio_ext_mic_en
= of_get_named_gpio(np
,
271 "nvidia,ext-mic-en-gpios", 0);
273 dev_err(card
->dev
, "No platform data supplied\n");
277 if (gpio_is_valid(pdata
->gpio_spkr_en
)) {
278 ret
= gpio_request(pdata
->gpio_spkr_en
, "spkr_en");
280 dev_err(card
->dev
, "cannot get spkr_en gpio\n");
283 machine
->gpio_requested
|= GPIO_SPKR_EN
;
285 gpio_direction_output(pdata
->gpio_spkr_en
, 0);
288 if (gpio_is_valid(pdata
->gpio_hp_mute
)) {
289 ret
= gpio_request(pdata
->gpio_hp_mute
, "hp_mute");
291 dev_err(card
->dev
, "cannot get hp_mute gpio\n");
294 machine
->gpio_requested
|= GPIO_HP_MUTE
;
296 gpio_direction_output(pdata
->gpio_hp_mute
, 1);
299 if (gpio_is_valid(pdata
->gpio_int_mic_en
)) {
300 ret
= gpio_request(pdata
->gpio_int_mic_en
, "int_mic_en");
302 dev_err(card
->dev
, "cannot get int_mic_en gpio\n");
305 machine
->gpio_requested
|= GPIO_INT_MIC_EN
;
307 /* Disable int mic; enable signal is active-high */
308 gpio_direction_output(pdata
->gpio_int_mic_en
, 0);
311 if (gpio_is_valid(pdata
->gpio_ext_mic_en
)) {
312 ret
= gpio_request(pdata
->gpio_ext_mic_en
, "ext_mic_en");
314 dev_err(card
->dev
, "cannot get ext_mic_en gpio\n");
317 machine
->gpio_requested
|= GPIO_EXT_MIC_EN
;
319 /* Enable ext mic; enable signal is active-low */
320 gpio_direction_output(pdata
->gpio_ext_mic_en
, 0);
323 if (gpio_is_valid(pdata
->gpio_hp_det
)) {
324 tegra_wm8903_hp_jack_gpio
.gpio
= pdata
->gpio_hp_det
;
325 snd_soc_jack_new(codec
, "Headphone Jack", SND_JACK_HEADPHONE
,
326 &tegra_wm8903_hp_jack
);
327 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack
,
328 ARRAY_SIZE(tegra_wm8903_hp_jack_pins
),
329 tegra_wm8903_hp_jack_pins
);
330 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack
,
332 &tegra_wm8903_hp_jack_gpio
);
333 machine
->gpio_requested
|= GPIO_HP_DET
;
336 snd_soc_jack_new(codec
, "Mic Jack", SND_JACK_MICROPHONE
,
337 &tegra_wm8903_mic_jack
);
338 snd_soc_jack_add_pins(&tegra_wm8903_mic_jack
,
339 ARRAY_SIZE(tegra_wm8903_mic_jack_pins
),
340 tegra_wm8903_mic_jack_pins
);
341 wm8903_mic_detect(codec
, &tegra_wm8903_mic_jack
, SND_JACK_MICROPHONE
,
344 snd_soc_dapm_force_enable_pin(dapm
, "MICBIAS");
349 static int tegra_wm8903_remove(struct snd_soc_card
*card
)
351 struct snd_soc_pcm_runtime
*rtd
= &(card
->rtd
[0]);
352 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
353 struct snd_soc_codec
*codec
= codec_dai
->codec
;
355 wm8903_mic_detect(codec
, NULL
, 0, 0);
360 static struct snd_soc_dai_link tegra_wm8903_dai
= {
362 .stream_name
= "WM8903 PCM",
363 .codec_name
= "wm8903.0-001a",
364 .platform_name
= "tegra20-i2s.0",
365 .cpu_dai_name
= "tegra20-i2s.0",
366 .codec_dai_name
= "wm8903-hifi",
367 .init
= tegra_wm8903_init
,
368 .ops
= &tegra_wm8903_ops
,
371 static struct snd_soc_card snd_soc_tegra_wm8903
= {
372 .name
= "tegra-wm8903",
373 .owner
= THIS_MODULE
,
374 .dai_link
= &tegra_wm8903_dai
,
377 .remove
= tegra_wm8903_remove
,
379 .controls
= tegra_wm8903_controls
,
380 .num_controls
= ARRAY_SIZE(tegra_wm8903_controls
),
381 .dapm_widgets
= tegra_wm8903_dapm_widgets
,
382 .num_dapm_widgets
= ARRAY_SIZE(tegra_wm8903_dapm_widgets
),
383 .fully_routed
= true,
386 static __devinit
int tegra_wm8903_driver_probe(struct platform_device
*pdev
)
388 struct snd_soc_card
*card
= &snd_soc_tegra_wm8903
;
389 struct tegra_wm8903
*machine
;
392 if (!pdev
->dev
.platform_data
&& !pdev
->dev
.of_node
) {
393 dev_err(&pdev
->dev
, "No platform data supplied\n");
397 machine
= devm_kzalloc(&pdev
->dev
, sizeof(struct tegra_wm8903
),
400 dev_err(&pdev
->dev
, "Can't allocate tegra_wm8903 struct\n");
405 card
->dev
= &pdev
->dev
;
406 platform_set_drvdata(pdev
, card
);
407 snd_soc_card_set_drvdata(card
, machine
);
409 if (pdev
->dev
.of_node
) {
410 ret
= snd_soc_of_parse_card_name(card
, "nvidia,model");
414 ret
= snd_soc_of_parse_audio_routing(card
,
415 "nvidia,audio-routing");
419 tegra_wm8903_dai
.codec_name
= NULL
;
420 tegra_wm8903_dai
.codec_of_node
= of_parse_phandle(
421 pdev
->dev
.of_node
, "nvidia,audio-codec", 0);
422 if (!tegra_wm8903_dai
.codec_of_node
) {
424 "Property 'nvidia,audio-codec' missing or invalid\n");
429 tegra_wm8903_dai
.cpu_dai_name
= NULL
;
430 tegra_wm8903_dai
.cpu_dai_of_node
= of_parse_phandle(
431 pdev
->dev
.of_node
, "nvidia,i2s-controller", 0);
432 if (!tegra_wm8903_dai
.cpu_dai_of_node
) {
434 "Property 'nvidia,i2s-controller' missing or invalid\n");
439 tegra_wm8903_dai
.platform_name
= NULL
;
440 tegra_wm8903_dai
.platform_of_node
=
441 tegra_wm8903_dai
.cpu_dai_of_node
;
443 if (machine_is_harmony()) {
444 card
->dapm_routes
= harmony_audio_map
;
445 card
->num_dapm_routes
= ARRAY_SIZE(harmony_audio_map
);
446 } else if (machine_is_seaboard()) {
447 card
->dapm_routes
= seaboard_audio_map
;
448 card
->num_dapm_routes
= ARRAY_SIZE(seaboard_audio_map
);
449 } else if (machine_is_kaen()) {
450 card
->dapm_routes
= kaen_audio_map
;
451 card
->num_dapm_routes
= ARRAY_SIZE(kaen_audio_map
);
453 card
->dapm_routes
= aebl_audio_map
;
454 card
->num_dapm_routes
= ARRAY_SIZE(aebl_audio_map
);
458 ret
= tegra_asoc_utils_init(&machine
->util_data
, &pdev
->dev
);
462 ret
= snd_soc_register_card(card
);
464 dev_err(&pdev
->dev
, "snd_soc_register_card failed (%d)\n",
472 tegra_asoc_utils_fini(&machine
->util_data
);
477 static int __devexit
tegra_wm8903_driver_remove(struct platform_device
*pdev
)
479 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
480 struct tegra_wm8903
*machine
= snd_soc_card_get_drvdata(card
);
481 struct tegra_wm8903_platform_data
*pdata
= &machine
->pdata
;
483 if (machine
->gpio_requested
& GPIO_HP_DET
)
484 snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack
,
486 &tegra_wm8903_hp_jack_gpio
);
487 if (machine
->gpio_requested
& GPIO_EXT_MIC_EN
)
488 gpio_free(pdata
->gpio_ext_mic_en
);
489 if (machine
->gpio_requested
& GPIO_INT_MIC_EN
)
490 gpio_free(pdata
->gpio_int_mic_en
);
491 if (machine
->gpio_requested
& GPIO_HP_MUTE
)
492 gpio_free(pdata
->gpio_hp_mute
);
493 if (machine
->gpio_requested
& GPIO_SPKR_EN
)
494 gpio_free(pdata
->gpio_spkr_en
);
495 machine
->gpio_requested
= 0;
497 snd_soc_unregister_card(card
);
499 tegra_asoc_utils_fini(&machine
->util_data
);
504 static const struct of_device_id tegra_wm8903_of_match
[] __devinitconst
= {
505 { .compatible
= "nvidia,tegra-audio-wm8903", },
509 static struct platform_driver tegra_wm8903_driver
= {
512 .owner
= THIS_MODULE
,
513 .pm
= &snd_soc_pm_ops
,
514 .of_match_table
= tegra_wm8903_of_match
,
516 .probe
= tegra_wm8903_driver_probe
,
517 .remove
= __devexit_p(tegra_wm8903_driver_remove
),
519 module_platform_driver(tegra_wm8903_driver
);
521 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
522 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
523 MODULE_LICENSE("GPL");
524 MODULE_ALIAS("platform:" DRV_NAME
);
525 MODULE_DEVICE_TABLE(of
, tegra_wm8903_of_match
);