2 * rx1950.c -- ALSA Soc Audio Layer
4 * Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com>
6 * Based on smdk2440.c and magician.c
8 * Authors: Graeme Gregory graeme.gregory@wolfsonmicro.com
9 * Philipp Zabel <philipp.zabel@gmail.com>
10 * Denis Grigoriev <dgreenday@gmail.com>
11 * Vasily Khoruzhick <anarsoul@gmail.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
20 #include <linux/types.h>
21 #include <linux/gpio.h>
22 #include <linux/module.h>
24 #include <sound/soc.h>
25 #include <sound/jack.h>
27 #include <mach/gpio-samsung.h>
29 #include <asm/mach-types.h>
31 #include "s3c24xx-i2s.h"
33 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime
*rtd
);
34 static int rx1950_uda1380_card_remove(struct snd_soc_card
*card
);
35 static int rx1950_startup(struct snd_pcm_substream
*substream
);
36 static int rx1950_hw_params(struct snd_pcm_substream
*substream
,
37 struct snd_pcm_hw_params
*params
);
38 static int rx1950_spk_power(struct snd_soc_dapm_widget
*w
,
39 struct snd_kcontrol
*kcontrol
, int event
);
41 static unsigned int rates
[] = {
47 static struct snd_pcm_hw_constraint_list hw_rates
= {
48 .count
= ARRAY_SIZE(rates
),
53 static struct snd_soc_jack hp_jack
;
55 static struct snd_soc_jack_pin hp_jack_pins
[] = {
57 .pin
= "Headphone Jack",
58 .mask
= SND_JACK_HEADPHONE
,
62 .mask
= SND_JACK_HEADPHONE
,
67 static struct snd_soc_jack_gpio hp_jack_gpios
[] = {
69 .gpio
= S3C2410_GPG(12),
71 .report
= SND_JACK_HEADPHONE
,
77 static struct snd_soc_ops rx1950_ops
= {
78 .startup
= rx1950_startup
,
79 .hw_params
= rx1950_hw_params
,
82 /* s3c24xx digital audio interface glue - connects codec <--> CPU */
83 static struct snd_soc_dai_link rx1950_uda1380_dai
[] = {
86 .stream_name
= "UDA1380 Duplex",
87 .cpu_dai_name
= "s3c24xx-iis",
88 .codec_dai_name
= "uda1380-hifi",
89 .init
= rx1950_uda1380_init
,
90 .platform_name
= "s3c24xx-iis",
91 .codec_name
= "uda1380-codec.0-001a",
92 .dai_fmt
= SND_SOC_DAIFMT_I2S
| SND_SOC_DAIFMT_NB_NF
|
93 SND_SOC_DAIFMT_CBS_CFS
,
98 /* rx1950 machine dapm widgets */
99 static const struct snd_soc_dapm_widget uda1380_dapm_widgets
[] = {
100 SND_SOC_DAPM_HP("Headphone Jack", NULL
),
101 SND_SOC_DAPM_MIC("Mic Jack", NULL
),
102 SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power
),
105 /* rx1950 machine audio_map */
106 static const struct snd_soc_dapm_route audio_map
[] = {
107 /* headphone connected to VOUTLHP, VOUTRHP */
108 {"Headphone Jack", NULL
, "VOUTLHP"},
109 {"Headphone Jack", NULL
, "VOUTRHP"},
111 /* ext speaker connected to VOUTL, VOUTR */
112 {"Speaker", NULL
, "VOUTL"},
113 {"Speaker", NULL
, "VOUTR"},
115 /* mic is connected to VINM */
116 {"VINM", NULL
, "Mic Jack"},
119 static struct snd_soc_card rx1950_asoc
= {
121 .owner
= THIS_MODULE
,
122 .remove
= rx1950_uda1380_card_remove
,
123 .dai_link
= rx1950_uda1380_dai
,
124 .num_links
= ARRAY_SIZE(rx1950_uda1380_dai
),
126 .dapm_widgets
= uda1380_dapm_widgets
,
127 .num_dapm_widgets
= ARRAY_SIZE(uda1380_dapm_widgets
),
128 .dapm_routes
= audio_map
,
129 .num_dapm_routes
= ARRAY_SIZE(audio_map
),
132 static struct platform_device
*s3c24xx_snd_device
;
134 static int rx1950_startup(struct snd_pcm_substream
*substream
)
136 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
138 return snd_pcm_hw_constraint_list(runtime
, 0,
139 SNDRV_PCM_HW_PARAM_RATE
,
143 static int rx1950_spk_power(struct snd_soc_dapm_widget
*w
,
144 struct snd_kcontrol
*kcontrol
, int event
)
146 if (SND_SOC_DAPM_EVENT_ON(event
))
147 gpio_set_value(S3C2410_GPA(1), 1);
149 gpio_set_value(S3C2410_GPA(1), 0);
154 static int rx1950_hw_params(struct snd_pcm_substream
*substream
,
155 struct snd_pcm_hw_params
*params
)
157 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
158 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
161 unsigned int rate
= params_rate(params
);
162 int clk_source
, fs_mode
;
167 clk_source
= S3C24XX_CLKSRC_PCLK
;
168 fs_mode
= S3C2410_IISMOD_256FS
;
169 div
= s3c24xx_i2s_get_clockrate() / (256 * rate
);
170 if (s3c24xx_i2s_get_clockrate() % (256 * rate
) > (128 * rate
))
175 clk_source
= S3C24XX_CLKSRC_MPLL
;
176 fs_mode
= S3C2410_IISMOD_384FS
;
180 printk(KERN_ERR
"%s: rate %d is not supported\n",
185 /* select clock source */
186 ret
= snd_soc_dai_set_sysclk(cpu_dai
, clk_source
, rate
,
191 /* set MCLK division for sample rate */
192 ret
= snd_soc_dai_set_clkdiv(cpu_dai
, S3C24XX_DIV_MCLK
,
197 /* set BCLK division for sample rate */
198 ret
= snd_soc_dai_set_clkdiv(cpu_dai
, S3C24XX_DIV_BCLK
,
199 S3C2410_IISMOD_32FS
);
203 /* set prescaler division for sample rate */
204 ret
= snd_soc_dai_set_clkdiv(cpu_dai
, S3C24XX_DIV_PRESCALER
,
205 S3C24XX_PRESCALE(div
, div
));
212 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime
*rtd
)
214 snd_soc_card_jack_new(rtd
->card
, "Headphone Jack", SND_JACK_HEADPHONE
,
215 &hp_jack
, hp_jack_pins
, ARRAY_SIZE(hp_jack_pins
));
217 snd_soc_jack_add_gpios(&hp_jack
, ARRAY_SIZE(hp_jack_gpios
),
223 static int rx1950_uda1380_card_remove(struct snd_soc_card
*card
)
225 snd_soc_jack_free_gpios(&hp_jack
, ARRAY_SIZE(hp_jack_gpios
),
231 static int __init
rx1950_init(void)
235 if (!machine_is_rx1950())
238 /* configure some gpios */
239 ret
= gpio_request(S3C2410_GPA(1), "speaker-power");
243 ret
= gpio_direction_output(S3C2410_GPA(1), 0);
247 s3c24xx_snd_device
= platform_device_alloc("soc-audio", -1);
248 if (!s3c24xx_snd_device
) {
253 platform_set_drvdata(s3c24xx_snd_device
, &rx1950_asoc
);
254 ret
= platform_device_add(s3c24xx_snd_device
);
257 platform_device_put(s3c24xx_snd_device
);
266 gpio_free(S3C2410_GPA(1));
272 static void __exit
rx1950_exit(void)
274 platform_device_unregister(s3c24xx_snd_device
);
275 gpio_free(S3C2410_GPA(1));
278 module_init(rx1950_init
);
279 module_exit(rx1950_exit
);
281 /* Module information */
282 MODULE_AUTHOR("Vasily Khoruzhick");
283 MODULE_DESCRIPTION("ALSA SoC RX1950");
284 MODULE_LICENSE("GPL");