1 /* sound/soc/samsung/smartq_wm8987.c
3 * Copyright 2010 Maurus Cuelenaere <mcuelenaere@gmail.com>
5 * Based on smdk6410_wm8987.c
6 * Copyright 2007 Wolfson Microelectronics PLC. - linux@wolfsonmicro.com
7 * Graeme Gregory - graeme.gregory@wolfsonmicro.com
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
16 #include <linux/module.h>
17 #include <linux/platform_device.h>
18 #include <linux/gpio.h>
20 #include <sound/pcm.h>
21 #include <sound/pcm_params.h>
22 #include <sound/soc.h>
23 #include <sound/jack.h>
25 #include <asm/mach-types.h>
30 #include "../codecs/wm8750.h"
33 * WM8987 is register compatible with WM8750, so using that as base driver.
36 static struct snd_soc_card snd_soc_smartq
;
38 static int smartq_hifi_hw_params(struct snd_pcm_substream
*substream
,
39 struct snd_pcm_hw_params
*params
)
41 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
42 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
43 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
47 switch (params_rate(params
)) {
63 /* set codec DAI configuration */
64 ret
= snd_soc_dai_set_fmt(codec_dai
, SND_SOC_DAIFMT_I2S
|
65 SND_SOC_DAIFMT_NB_NF
|
66 SND_SOC_DAIFMT_CBS_CFS
);
70 /* set cpu DAI configuration */
71 ret
= snd_soc_dai_set_fmt(cpu_dai
, SND_SOC_DAIFMT_I2S
|
72 SND_SOC_DAIFMT_NB_NF
|
73 SND_SOC_DAIFMT_CBS_CFS
);
77 /* Use PCLK for I2S signal generation */
78 ret
= snd_soc_dai_set_sysclk(cpu_dai
, SAMSUNG_I2S_RCLKSRC_0
,
83 /* Gate the RCLK output on PAD */
84 ret
= snd_soc_dai_set_sysclk(cpu_dai
, SAMSUNG_I2S_CDCLK
,
89 /* set the codec system clock for DAC and ADC */
90 ret
= snd_soc_dai_set_sysclk(codec_dai
, WM8750_SYSCLK
, clk
,
99 * SmartQ WM8987 HiFi DAI operations.
101 static struct snd_soc_ops smartq_hifi_ops
= {
102 .hw_params
= smartq_hifi_hw_params
,
105 static struct snd_soc_jack smartq_jack
;
107 static struct snd_soc_jack_pin smartq_jack_pins
[] = {
108 /* Disable speaker when headphone is plugged in */
110 .pin
= "Internal Speaker",
111 .mask
= SND_JACK_HEADPHONE
,
115 static struct snd_soc_jack_gpio smartq_jack_gpios
[] = {
117 .gpio
= S3C64XX_GPL(12),
118 .name
= "headphone detect",
119 .report
= SND_JACK_HEADPHONE
,
120 .debounce_time
= 200,
124 static const struct snd_kcontrol_new wm8987_smartq_controls
[] = {
125 SOC_DAPM_PIN_SWITCH("Internal Speaker"),
126 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
127 SOC_DAPM_PIN_SWITCH("Internal Mic"),
130 static int smartq_speaker_event(struct snd_soc_dapm_widget
*w
,
131 struct snd_kcontrol
*k
,
134 gpio_set_value(S3C64XX_GPK(12), SND_SOC_DAPM_EVENT_OFF(event
));
139 static const struct snd_soc_dapm_widget wm8987_dapm_widgets
[] = {
140 SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event
),
141 SND_SOC_DAPM_HP("Headphone Jack", NULL
),
142 SND_SOC_DAPM_MIC("Internal Mic", NULL
),
145 static const struct snd_soc_dapm_route audio_map
[] = {
146 {"Headphone Jack", NULL
, "LOUT2"},
147 {"Headphone Jack", NULL
, "ROUT2"},
149 {"Internal Speaker", NULL
, "LOUT2"},
150 {"Internal Speaker", NULL
, "ROUT2"},
152 {"Mic Bias", NULL
, "Internal Mic"},
153 {"LINPUT2", NULL
, "Mic Bias"},
156 static int smartq_wm8987_init(struct snd_soc_pcm_runtime
*rtd
)
158 struct snd_soc_codec
*codec
= rtd
->codec
;
159 struct snd_soc_dapm_context
*dapm
= &codec
->dapm
;
162 /* Add SmartQ specific widgets */
163 snd_soc_dapm_new_controls(dapm
, wm8987_dapm_widgets
,
164 ARRAY_SIZE(wm8987_dapm_widgets
));
166 /* add SmartQ specific controls */
167 err
= snd_soc_add_controls(codec
, wm8987_smartq_controls
,
168 ARRAY_SIZE(wm8987_smartq_controls
));
173 /* setup SmartQ specific audio path */
174 snd_soc_dapm_add_routes(dapm
, audio_map
, ARRAY_SIZE(audio_map
));
176 /* set endpoints to not connected */
177 snd_soc_dapm_nc_pin(dapm
, "LINPUT1");
178 snd_soc_dapm_nc_pin(dapm
, "RINPUT1");
179 snd_soc_dapm_nc_pin(dapm
, "OUT3");
180 snd_soc_dapm_nc_pin(dapm
, "ROUT1");
182 /* set endpoints to default off mode */
183 snd_soc_dapm_enable_pin(dapm
, "Internal Speaker");
184 snd_soc_dapm_enable_pin(dapm
, "Internal Mic");
185 snd_soc_dapm_disable_pin(dapm
, "Headphone Jack");
187 err
= snd_soc_dapm_sync(dapm
);
191 /* Headphone jack detection */
192 err
= snd_soc_jack_new(codec
, "Headphone Jack",
193 SND_JACK_HEADPHONE
, &smartq_jack
);
197 err
= snd_soc_jack_add_pins(&smartq_jack
, ARRAY_SIZE(smartq_jack_pins
),
202 err
= snd_soc_jack_add_gpios(&smartq_jack
,
203 ARRAY_SIZE(smartq_jack_gpios
),
209 static struct snd_soc_dai_link smartq_dai
[] = {
212 .stream_name
= "SmartQ Hi-Fi",
213 .cpu_dai_name
= "samsung-i2s.0",
214 .codec_dai_name
= "wm8750-hifi",
215 .platform_name
= "samsung-audio",
216 .codec_name
= "wm8750-codec.0-0x1a",
217 .init
= smartq_wm8987_init
,
218 .ops
= &smartq_hifi_ops
,
222 static struct snd_soc_card snd_soc_smartq
= {
224 .dai_link
= smartq_dai
,
225 .num_links
= ARRAY_SIZE(smartq_dai
),
228 static struct platform_device
*smartq_snd_device
;
230 static int __init
smartq_init(void)
234 if (!machine_is_smartq7() && !machine_is_smartq5()) {
235 pr_info("Only SmartQ is supported by this ASoC driver\n");
239 smartq_snd_device
= platform_device_alloc("soc-audio", -1);
240 if (!smartq_snd_device
)
243 platform_set_drvdata(smartq_snd_device
, &snd_soc_smartq
);
245 ret
= platform_device_add(smartq_snd_device
);
247 platform_device_put(smartq_snd_device
);
251 /* Initialise GPIOs used by amplifiers */
252 ret
= gpio_request(S3C64XX_GPK(12), "amplifiers shutdown");
254 dev_err(&smartq_snd_device
->dev
, "Failed to register GPK12\n");
255 goto err_unregister_device
;
258 /* Disable amplifiers */
259 ret
= gpio_direction_output(S3C64XX_GPK(12), 1);
261 dev_err(&smartq_snd_device
->dev
, "Failed to configure GPK12\n");
262 goto err_free_gpio_amp_shut
;
267 err_free_gpio_amp_shut
:
268 gpio_free(S3C64XX_GPK(12));
269 err_unregister_device
:
270 platform_device_unregister(smartq_snd_device
);
275 static void __exit
smartq_exit(void)
277 gpio_free(S3C64XX_GPK(12));
278 snd_soc_jack_free_gpios(&smartq_jack
, ARRAY_SIZE(smartq_jack_gpios
),
281 platform_device_unregister(smartq_snd_device
);
284 module_init(smartq_init
);
285 module_exit(smartq_exit
);
287 /* Module information */
288 MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>");
289 MODULE_DESCRIPTION("ALSA SoC SmartQ WM8987");
290 MODULE_LICENSE("GPL");