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/gpio.h>
17 #include <linux/module.h>
19 #include <sound/soc.h>
20 #include <sound/jack.h>
22 #include <mach/gpio-samsung.h>
23 #include <asm/mach-types.h>
26 #include "../codecs/wm8750.h"
29 * WM8987 is register compatible with WM8750, so using that as base driver.
32 static struct snd_soc_card snd_soc_smartq
;
34 static int smartq_hifi_hw_params(struct snd_pcm_substream
*substream
,
35 struct snd_pcm_hw_params
*params
)
37 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
38 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
39 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
43 switch (params_rate(params
)) {
59 /* set codec DAI configuration */
60 ret
= snd_soc_dai_set_fmt(codec_dai
, SND_SOC_DAIFMT_I2S
|
61 SND_SOC_DAIFMT_NB_NF
|
62 SND_SOC_DAIFMT_CBS_CFS
);
66 /* set cpu DAI configuration */
67 ret
= snd_soc_dai_set_fmt(cpu_dai
, SND_SOC_DAIFMT_I2S
|
68 SND_SOC_DAIFMT_NB_NF
|
69 SND_SOC_DAIFMT_CBS_CFS
);
73 /* Use PCLK for I2S signal generation */
74 ret
= snd_soc_dai_set_sysclk(cpu_dai
, SAMSUNG_I2S_RCLKSRC_0
,
79 /* Gate the RCLK output on PAD */
80 ret
= snd_soc_dai_set_sysclk(cpu_dai
, SAMSUNG_I2S_CDCLK
,
85 /* set the codec system clock for DAC and ADC */
86 ret
= snd_soc_dai_set_sysclk(codec_dai
, WM8750_SYSCLK
, clk
,
95 * SmartQ WM8987 HiFi DAI operations.
97 static struct snd_soc_ops smartq_hifi_ops
= {
98 .hw_params
= smartq_hifi_hw_params
,
101 static struct snd_soc_jack smartq_jack
;
103 static struct snd_soc_jack_pin smartq_jack_pins
[] = {
104 /* Disable speaker when headphone is plugged in */
106 .pin
= "Internal Speaker",
107 .mask
= SND_JACK_HEADPHONE
,
111 static struct snd_soc_jack_gpio smartq_jack_gpios
[] = {
113 .gpio
= S3C64XX_GPL(12),
114 .name
= "headphone detect",
115 .report
= SND_JACK_HEADPHONE
,
116 .debounce_time
= 200,
120 static const struct snd_kcontrol_new wm8987_smartq_controls
[] = {
121 SOC_DAPM_PIN_SWITCH("Internal Speaker"),
122 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
123 SOC_DAPM_PIN_SWITCH("Internal Mic"),
126 static int smartq_speaker_event(struct snd_soc_dapm_widget
*w
,
127 struct snd_kcontrol
*k
,
130 gpio_set_value(S3C64XX_GPK(12), SND_SOC_DAPM_EVENT_OFF(event
));
135 static const struct snd_soc_dapm_widget wm8987_dapm_widgets
[] = {
136 SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event
),
137 SND_SOC_DAPM_HP("Headphone Jack", NULL
),
138 SND_SOC_DAPM_MIC("Internal Mic", NULL
),
141 static const struct snd_soc_dapm_route audio_map
[] = {
142 {"Headphone Jack", NULL
, "LOUT2"},
143 {"Headphone Jack", NULL
, "ROUT2"},
145 {"Internal Speaker", NULL
, "LOUT2"},
146 {"Internal Speaker", NULL
, "ROUT2"},
148 {"Mic Bias", NULL
, "Internal Mic"},
149 {"LINPUT2", NULL
, "Mic Bias"},
152 static int smartq_wm8987_init(struct snd_soc_pcm_runtime
*rtd
)
154 struct snd_soc_codec
*codec
= rtd
->codec
;
155 struct snd_soc_dapm_context
*dapm
= &codec
->dapm
;
158 /* set endpoints to not connected */
159 snd_soc_dapm_nc_pin(dapm
, "LINPUT1");
160 snd_soc_dapm_nc_pin(dapm
, "RINPUT1");
161 snd_soc_dapm_nc_pin(dapm
, "OUT3");
162 snd_soc_dapm_nc_pin(dapm
, "ROUT1");
164 /* set endpoints to default off mode */
165 snd_soc_dapm_enable_pin(dapm
, "Internal Speaker");
166 snd_soc_dapm_enable_pin(dapm
, "Internal Mic");
167 snd_soc_dapm_disable_pin(dapm
, "Headphone Jack");
169 /* Headphone jack detection */
170 err
= snd_soc_jack_new(codec
, "Headphone Jack",
171 SND_JACK_HEADPHONE
, &smartq_jack
);
175 err
= snd_soc_jack_add_pins(&smartq_jack
, ARRAY_SIZE(smartq_jack_pins
),
180 err
= snd_soc_jack_add_gpios(&smartq_jack
,
181 ARRAY_SIZE(smartq_jack_gpios
),
187 static struct snd_soc_dai_link smartq_dai
[] = {
190 .stream_name
= "SmartQ Hi-Fi",
191 .cpu_dai_name
= "samsung-i2s.0",
192 .codec_dai_name
= "wm8750-hifi",
193 .platform_name
= "samsung-i2s.0",
194 .codec_name
= "wm8750.0-0x1a",
195 .init
= smartq_wm8987_init
,
196 .ops
= &smartq_hifi_ops
,
200 static struct snd_soc_card snd_soc_smartq
= {
202 .owner
= THIS_MODULE
,
203 .dai_link
= smartq_dai
,
204 .num_links
= ARRAY_SIZE(smartq_dai
),
206 .dapm_widgets
= wm8987_dapm_widgets
,
207 .num_dapm_widgets
= ARRAY_SIZE(wm8987_dapm_widgets
),
208 .dapm_routes
= audio_map
,
209 .num_dapm_routes
= ARRAY_SIZE(audio_map
),
210 .controls
= wm8987_smartq_controls
,
211 .num_controls
= ARRAY_SIZE(wm8987_smartq_controls
),
214 static struct platform_device
*smartq_snd_device
;
216 static int __init
smartq_init(void)
220 if (!machine_is_smartq7() && !machine_is_smartq5()) {
221 pr_info("Only SmartQ is supported by this ASoC driver\n");
225 smartq_snd_device
= platform_device_alloc("soc-audio", -1);
226 if (!smartq_snd_device
)
229 platform_set_drvdata(smartq_snd_device
, &snd_soc_smartq
);
231 ret
= platform_device_add(smartq_snd_device
);
233 platform_device_put(smartq_snd_device
);
237 /* Initialise GPIOs used by amplifiers */
238 ret
= gpio_request(S3C64XX_GPK(12), "amplifiers shutdown");
240 dev_err(&smartq_snd_device
->dev
, "Failed to register GPK12\n");
241 goto err_unregister_device
;
244 /* Disable amplifiers */
245 ret
= gpio_direction_output(S3C64XX_GPK(12), 1);
247 dev_err(&smartq_snd_device
->dev
, "Failed to configure GPK12\n");
248 goto err_free_gpio_amp_shut
;
253 err_free_gpio_amp_shut
:
254 gpio_free(S3C64XX_GPK(12));
255 err_unregister_device
:
256 platform_device_unregister(smartq_snd_device
);
261 static void __exit
smartq_exit(void)
263 gpio_free(S3C64XX_GPK(12));
264 snd_soc_jack_free_gpios(&smartq_jack
, ARRAY_SIZE(smartq_jack_gpios
),
267 platform_device_unregister(smartq_snd_device
);
270 module_init(smartq_init
);
271 module_exit(smartq_exit
);
273 /* Module information */
274 MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>");
275 MODULE_DESCRIPTION("ALSA SoC SmartQ WM8987");
276 MODULE_LICENSE("GPL");