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 struct snd_soc_codec *codec = rtd->codec;
216 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
219 snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
222 snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
228 static int rx1950_uda1380_card_remove(struct snd_soc_card *card)
230 snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
236 static int __init rx1950_init(void)
240 if (!machine_is_rx1950())
243 /* configure some gpios */
244 ret = gpio_request(S3C2410_GPA(1), "speaker-power");
248 ret = gpio_direction_output(S3C2410_GPA(1), 0);
252 s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
253 if (!s3c24xx_snd_device) {
258 platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
259 ret = platform_device_add(s3c24xx_snd_device);
262 platform_device_put(s3c24xx_snd_device);
271 gpio_free(S3C2410_GPA(1));
277 static void __exit rx1950_exit(void)
279 platform_device_unregister(s3c24xx_snd_device);
280 gpio_free(S3C2410_GPA(1));
283 module_init(rx1950_init);
284 module_exit(rx1950_exit);
286 /* Module information */
287 MODULE_AUTHOR("Vasily Khoruzhick");
288 MODULE_DESCRIPTION("ALSA SoC RX1950");
289 MODULE_LICENSE("GPL");