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/gpio.h>
22 #include <sound/soc.h>
23 #include <sound/jack.h>
25 #include <plat/regs-iis.h>
26 #include <asm/mach-types.h>
28 #include "s3c24xx-i2s.h"
30 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
31 static int rx1950_startup(struct snd_pcm_substream *substream);
32 static int rx1950_hw_params(struct snd_pcm_substream *substream,
33 struct snd_pcm_hw_params *params);
34 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
35 struct snd_kcontrol *kcontrol, int event);
37 static unsigned int rates[] = {
43 static struct snd_pcm_hw_constraint_list hw_rates = {
44 .count = ARRAY_SIZE(rates),
49 static struct snd_soc_jack hp_jack;
51 static struct snd_soc_jack_pin hp_jack_pins[] = {
53 .pin = "Headphone Jack",
54 .mask = SND_JACK_HEADPHONE,
58 .mask = SND_JACK_HEADPHONE,
63 static struct snd_soc_jack_gpio hp_jack_gpios[] = {
65 .gpio = S3C2410_GPG(12),
67 .report = SND_JACK_HEADPHONE,
73 static struct snd_soc_ops rx1950_ops = {
74 .startup = rx1950_startup,
75 .hw_params = rx1950_hw_params,
78 /* s3c24xx digital audio interface glue - connects codec <--> CPU */
79 static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
82 .stream_name = "UDA1380 Duplex",
83 .cpu_dai_name = "s3c24xx-iis",
84 .codec_dai_name = "uda1380-hifi",
85 .init = rx1950_uda1380_init,
86 .platform_name = "samsung-audio",
87 .codec_name = "uda1380-codec.0-001a",
92 static struct snd_soc_card rx1950_asoc = {
94 .dai_link = rx1950_uda1380_dai,
95 .num_links = ARRAY_SIZE(rx1950_uda1380_dai),
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 platform_device *s3c24xx_snd_device;
121 static int rx1950_startup(struct snd_pcm_substream *substream)
123 struct snd_pcm_runtime *runtime = substream->runtime;
125 runtime->hw.rate_min = hw_rates.list[0];
126 runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1];
127 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
129 return snd_pcm_hw_constraint_list(runtime, 0,
130 SNDRV_PCM_HW_PARAM_RATE,
134 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
135 struct snd_kcontrol *kcontrol, int event)
137 if (SND_SOC_DAPM_EVENT_ON(event))
138 gpio_set_value(S3C2410_GPA(1), 1);
140 gpio_set_value(S3C2410_GPA(1), 0);
145 static int rx1950_hw_params(struct snd_pcm_substream *substream,
146 struct snd_pcm_hw_params *params)
148 struct snd_soc_pcm_runtime *rtd = substream->private_data;
149 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
150 struct snd_soc_dai *codec_dai = rtd->codec_dai;
153 unsigned int rate = params_rate(params);
154 int clk_source, fs_mode;
159 clk_source = S3C24XX_CLKSRC_PCLK;
160 fs_mode = S3C2410_IISMOD_256FS;
161 div = s3c24xx_i2s_get_clockrate() / (256 * rate);
162 if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
167 clk_source = S3C24XX_CLKSRC_MPLL;
168 fs_mode = S3C2410_IISMOD_384FS;
172 printk(KERN_ERR "%s: rate %d is not supported\n",
177 /* set codec DAI configuration */
178 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
179 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
183 /* set cpu DAI configuration */
184 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
185 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
189 /* select clock source */
190 ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
195 /* set MCLK division for sample rate */
196 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
201 /* set BCLK division for sample rate */
202 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
203 S3C2410_IISMOD_32FS);
207 /* set prescaler division for sample rate */
208 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
209 S3C24XX_PRESCALE(div, div));
216 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
218 struct snd_soc_codec *codec = rtd->codec;
219 struct snd_soc_dapm_context *dapm = &codec->dapm;
222 /* Add rx1950 specific widgets */
223 err = snd_soc_dapm_new_controls(dapm, uda1380_dapm_widgets,
224 ARRAY_SIZE(uda1380_dapm_widgets));
229 /* Set up rx1950 specific audio path audio_mapnects */
230 err = snd_soc_dapm_add_routes(dapm, audio_map,
231 ARRAY_SIZE(audio_map));
236 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
237 snd_soc_dapm_enable_pin(dapm, "Speaker");
238 snd_soc_dapm_enable_pin(dapm, "Mic Jack");
240 snd_soc_dapm_sync(dapm);
242 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
245 snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
248 snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
254 static int __init rx1950_init(void)
258 if (!machine_is_rx1950())
261 /* configure some gpios */
262 ret = gpio_request(S3C2410_GPA(1), "speaker-power");
266 ret = gpio_direction_output(S3C2410_GPA(1), 0);
270 s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
271 if (!s3c24xx_snd_device) {
276 platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
277 ret = platform_device_add(s3c24xx_snd_device);
280 platform_device_put(s3c24xx_snd_device);
289 gpio_free(S3C2410_GPA(1));
295 static void __exit rx1950_exit(void)
297 platform_device_unregister(s3c24xx_snd_device);
298 snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
300 gpio_free(S3C2410_GPA(1));
303 module_init(rx1950_init);
304 module_exit(rx1950_exit);
306 /* Module information */
307 MODULE_AUTHOR("Vasily Khoruzhick");
308 MODULE_DESCRIPTION("ALSA SoC RX1950");
309 MODULE_LICENSE("GPL");