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_startup(struct snd_pcm_substream *substream);
35 static int rx1950_hw_params(struct snd_pcm_substream *substream,
36 struct snd_pcm_hw_params *params);
37 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
38 struct snd_kcontrol *kcontrol, int event);
40 static unsigned int rates[] = {
46 static struct snd_pcm_hw_constraint_list hw_rates = {
47 .count = ARRAY_SIZE(rates),
52 static struct snd_soc_jack hp_jack;
54 static struct snd_soc_jack_pin hp_jack_pins[] = {
56 .pin = "Headphone Jack",
57 .mask = SND_JACK_HEADPHONE,
61 .mask = SND_JACK_HEADPHONE,
66 static struct snd_soc_jack_gpio hp_jack_gpios[] = {
68 .gpio = S3C2410_GPG(12),
70 .report = SND_JACK_HEADPHONE,
76 static struct snd_soc_ops rx1950_ops = {
77 .startup = rx1950_startup,
78 .hw_params = rx1950_hw_params,
81 /* s3c24xx digital audio interface glue - connects codec <--> CPU */
82 static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
85 .stream_name = "UDA1380 Duplex",
86 .cpu_dai_name = "s3c24xx-iis",
87 .codec_dai_name = "uda1380-hifi",
88 .init = rx1950_uda1380_init,
89 .platform_name = "s3c24xx-iis",
90 .codec_name = "uda1380-codec.0-001a",
95 /* rx1950 machine dapm widgets */
96 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
97 SND_SOC_DAPM_HP("Headphone Jack", NULL),
98 SND_SOC_DAPM_MIC("Mic Jack", NULL),
99 SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
102 /* rx1950 machine audio_map */
103 static const struct snd_soc_dapm_route audio_map[] = {
104 /* headphone connected to VOUTLHP, VOUTRHP */
105 {"Headphone Jack", NULL, "VOUTLHP"},
106 {"Headphone Jack", NULL, "VOUTRHP"},
108 /* ext speaker connected to VOUTL, VOUTR */
109 {"Speaker", NULL, "VOUTL"},
110 {"Speaker", NULL, "VOUTR"},
112 /* mic is connected to VINM */
113 {"VINM", NULL, "Mic Jack"},
116 static struct snd_soc_card rx1950_asoc = {
118 .owner = THIS_MODULE,
119 .dai_link = rx1950_uda1380_dai,
120 .num_links = ARRAY_SIZE(rx1950_uda1380_dai),
122 .dapm_widgets = uda1380_dapm_widgets,
123 .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
124 .dapm_routes = audio_map,
125 .num_dapm_routes = ARRAY_SIZE(audio_map),
128 static struct platform_device *s3c24xx_snd_device;
130 static int rx1950_startup(struct snd_pcm_substream *substream)
132 struct snd_pcm_runtime *runtime = substream->runtime;
134 runtime->hw.rate_min = hw_rates.list[0];
135 runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1];
136 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
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;
159 struct snd_soc_dai *codec_dai = rtd->codec_dai;
162 unsigned int rate = params_rate(params);
163 int clk_source, fs_mode;
168 clk_source = S3C24XX_CLKSRC_PCLK;
169 fs_mode = S3C2410_IISMOD_256FS;
170 div = s3c24xx_i2s_get_clockrate() / (256 * rate);
171 if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
176 clk_source = S3C24XX_CLKSRC_MPLL;
177 fs_mode = S3C2410_IISMOD_384FS;
181 printk(KERN_ERR "%s: rate %d is not supported\n",
186 /* set codec DAI configuration */
187 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
188 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
192 /* set cpu DAI configuration */
193 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
194 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
198 /* select clock source */
199 ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
204 /* set MCLK division for sample rate */
205 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
210 /* set BCLK division for sample rate */
211 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
212 S3C2410_IISMOD_32FS);
216 /* set prescaler division for sample rate */
217 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
218 S3C24XX_PRESCALE(div, div));
225 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
227 struct snd_soc_codec *codec = rtd->codec;
228 struct snd_soc_dapm_context *dapm = &codec->dapm;
231 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
232 snd_soc_dapm_enable_pin(dapm, "Speaker");
233 snd_soc_dapm_enable_pin(dapm, "Mic Jack");
235 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
238 snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
241 snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
247 static int __init rx1950_init(void)
251 if (!machine_is_rx1950())
254 /* configure some gpios */
255 ret = gpio_request(S3C2410_GPA(1), "speaker-power");
259 ret = gpio_direction_output(S3C2410_GPA(1), 0);
263 s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
264 if (!s3c24xx_snd_device) {
269 platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
270 ret = platform_device_add(s3c24xx_snd_device);
273 platform_device_put(s3c24xx_snd_device);
282 gpio_free(S3C2410_GPA(1));
288 static void __exit rx1950_exit(void)
290 platform_device_unregister(s3c24xx_snd_device);
291 snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
293 gpio_free(S3C2410_GPA(1));
296 module_init(rx1950_init);
297 module_exit(rx1950_exit);
299 /* Module information */
300 MODULE_AUTHOR("Vasily Khoruzhick");
301 MODULE_DESCRIPTION("ALSA SoC RX1950");
302 MODULE_LICENSE("GPL");