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/module.h>
21 #include <linux/moduleparam.h>
22 #include <linux/platform_device.h>
23 #include <linux/i2c.h>
24 #include <linux/gpio.h>
25 #include <linux/clk.h>
27 #include <sound/soc.h>
28 #include <sound/soc-dapm.h>
29 #include <sound/uda1380.h>
30 #include <sound/jack.h>
32 #include <plat/regs-iis.h>
34 #include <mach/regs-clock.h>
36 #include <asm/mach-types.h>
39 #include "s3c24xx-i2s.h"
40 #include "../codecs/uda1380.h"
42 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
43 static int rx1950_startup(struct snd_pcm_substream *substream);
44 static int rx1950_hw_params(struct snd_pcm_substream *substream,
45 struct snd_pcm_hw_params *params);
46 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
47 struct snd_kcontrol *kcontrol, int event);
49 static unsigned int rates[] = {
55 static struct snd_pcm_hw_constraint_list hw_rates = {
56 .count = ARRAY_SIZE(rates),
61 static struct snd_soc_jack hp_jack;
63 static struct snd_soc_jack_pin hp_jack_pins[] = {
65 .pin = "Headphone Jack",
66 .mask = SND_JACK_HEADPHONE,
70 .mask = SND_JACK_HEADPHONE,
75 static struct snd_soc_jack_gpio hp_jack_gpios[] = {
77 .gpio = S3C2410_GPG(12),
79 .report = SND_JACK_HEADPHONE,
85 static struct snd_soc_ops rx1950_ops = {
86 .startup = rx1950_startup,
87 .hw_params = rx1950_hw_params,
90 /* s3c24xx digital audio interface glue - connects codec <--> CPU */
91 static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
94 .stream_name = "UDA1380 Duplex",
95 .cpu_dai_name = "s3c24xx-iis",
96 .codec_dai_name = "uda1380-hifi",
97 .init = rx1950_uda1380_init,
98 .platform_name = "s3c24xx-pcm-audio",
99 .codec_name = "uda1380-codec.0-001a",
104 static struct snd_soc_card rx1950_asoc = {
106 .dai_link = rx1950_uda1380_dai,
107 .num_links = ARRAY_SIZE(rx1950_uda1380_dai),
110 /* rx1950 machine dapm widgets */
111 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
112 SND_SOC_DAPM_HP("Headphone Jack", NULL),
113 SND_SOC_DAPM_MIC("Mic Jack", NULL),
114 SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
117 /* rx1950 machine audio_map */
118 static const struct snd_soc_dapm_route audio_map[] = {
119 /* headphone connected to VOUTLHP, VOUTRHP */
120 {"Headphone Jack", NULL, "VOUTLHP"},
121 {"Headphone Jack", NULL, "VOUTRHP"},
123 /* ext speaker connected to VOUTL, VOUTR */
124 {"Speaker", NULL, "VOUTL"},
125 {"Speaker", NULL, "VOUTR"},
127 /* mic is connected to VINM */
128 {"VINM", NULL, "Mic Jack"},
131 static struct platform_device *s3c24xx_snd_device;
133 static int rx1950_startup(struct snd_pcm_substream *substream)
135 struct snd_pcm_runtime *runtime = substream->runtime;
137 runtime->hw.rate_min = hw_rates.list[0];
138 runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1];
139 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
141 return snd_pcm_hw_constraint_list(runtime, 0,
142 SNDRV_PCM_HW_PARAM_RATE,
146 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
147 struct snd_kcontrol *kcontrol, int event)
149 if (SND_SOC_DAPM_EVENT_ON(event))
150 gpio_set_value(S3C2410_GPA(1), 1);
152 gpio_set_value(S3C2410_GPA(1), 0);
157 static int rx1950_hw_params(struct snd_pcm_substream *substream,
158 struct snd_pcm_hw_params *params)
160 struct snd_soc_pcm_runtime *rtd = substream->private_data;
161 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
162 struct snd_soc_dai *codec_dai = rtd->codec_dai;
165 unsigned int rate = params_rate(params);
166 int clk_source, fs_mode;
171 clk_source = S3C24XX_CLKSRC_PCLK;
172 fs_mode = S3C2410_IISMOD_256FS;
173 div = s3c24xx_i2s_get_clockrate() / (256 * rate);
174 if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
179 clk_source = S3C24XX_CLKSRC_MPLL;
180 fs_mode = S3C2410_IISMOD_384FS;
184 printk(KERN_ERR "%s: rate %d is not supported\n",
189 /* set codec DAI configuration */
190 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
191 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
195 /* set cpu DAI configuration */
196 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
197 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
201 /* select clock source */
202 ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
207 /* set MCLK division for sample rate */
208 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
213 /* set BCLK division for sample rate */
214 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
215 S3C2410_IISMOD_32FS);
219 /* set prescaler division for sample rate */
220 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
221 S3C24XX_PRESCALE(div, div));
228 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
230 struct snd_soc_codec *codec = rtd->codec;
233 /* Add rx1950 specific widgets */
234 err = snd_soc_dapm_new_controls(codec, uda1380_dapm_widgets,
235 ARRAY_SIZE(uda1380_dapm_widgets));
240 /* Set up rx1950 specific audio path audio_mapnects */
241 err = snd_soc_dapm_add_routes(codec, audio_map,
242 ARRAY_SIZE(audio_map));
247 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
248 snd_soc_dapm_enable_pin(codec, "Speaker");
250 snd_soc_dapm_sync(codec);
252 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
255 snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
258 snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
264 static int __init rx1950_init(void)
268 if (!machine_is_rx1950())
271 /* configure some gpios */
272 ret = gpio_request(S3C2410_GPA(1), "speaker-power");
276 ret = gpio_direction_output(S3C2410_GPA(1), 0);
280 s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
281 if (!s3c24xx_snd_device) {
286 platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
287 ret = platform_device_add(s3c24xx_snd_device);
290 platform_device_put(s3c24xx_snd_device);
299 gpio_free(S3C2410_GPA(1));
305 static void __exit rx1950_exit(void)
307 platform_device_unregister(s3c24xx_snd_device);
308 snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
310 gpio_free(S3C2410_GPA(1));
313 module_init(rx1950_init);
314 module_exit(rx1950_exit);
316 /* Module information */
317 MODULE_AUTHOR("Vasily Khoruzhick");
318 MODULE_DESCRIPTION("ALSA SoC RX1950");
319 MODULE_LICENSE("GPL");