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/timer.h>
23 #include <linux/delay.h>
24 #include <linux/interrupt.h>
25 #include <linux/platform_device.h>
26 #include <linux/spinlock.h>
27 #include <linux/i2c.h>
28 #include <linux/gpio.h>
29 #include <linux/clk.h>
31 #include <sound/core.h>
32 #include <sound/pcm.h>
33 #include <sound/pcm_params.h>
34 #include <sound/soc.h>
35 #include <sound/soc-dapm.h>
36 #include <sound/uda1380.h>
37 #include <sound/jack.h>
39 #include <plat/regs-iis.h>
41 #include <mach/regs-clock.h>
44 #include "s3c24xx-i2s.h"
45 #include "../codecs/uda1380.h"
47 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
48 static int rx1950_startup(struct snd_pcm_substream *substream);
49 static int rx1950_hw_params(struct snd_pcm_substream *substream,
50 struct snd_pcm_hw_params *params);
51 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
52 struct snd_kcontrol *kcontrol, int event);
54 static unsigned int rates[] = {
61 static struct snd_pcm_hw_constraint_list hw_rates = {
62 .count = ARRAY_SIZE(rates),
67 static struct snd_soc_jack hp_jack;
69 static struct snd_soc_jack_pin hp_jack_pins[] = {
71 .pin = "Headphone Jack",
72 .mask = SND_JACK_HEADPHONE,
76 .mask = SND_JACK_HEADPHONE,
81 static struct snd_soc_jack_gpio hp_jack_gpios[] = {
83 .gpio = S3C2410_GPG(12),
85 .report = SND_JACK_HEADPHONE,
91 static struct snd_soc_ops rx1950_ops = {
92 .startup = rx1950_startup,
93 .hw_params = rx1950_hw_params,
96 /* s3c24xx digital audio interface glue - connects codec <--> CPU */
97 static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
100 .stream_name = "UDA1380 Duplex",
101 .cpu_dai_name = "s3c24xx-iis",
102 .codec_dai_name = "uda1380-hifi",
103 .init = rx1950_uda1380_init,
104 .platform_name = "s3c24xx-pcm-audio",
105 .codec_name = "uda1380-codec.0-001a",
110 static struct snd_soc_card rx1950_asoc = {
112 .dai_link = rx1950_uda1380_dai,
113 .num_links = ARRAY_SIZE(rx1950_uda1380_dai),
116 /* rx1950 machine dapm widgets */
117 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
118 SND_SOC_DAPM_HP("Headphone Jack", NULL),
119 SND_SOC_DAPM_MIC("Mic Jack", NULL),
120 SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
123 /* rx1950 machine audio_map */
124 static const struct snd_soc_dapm_route audio_map[] = {
125 /* headphone connected to VOUTLHP, VOUTRHP */
126 {"Headphone Jack", NULL, "VOUTLHP"},
127 {"Headphone Jack", NULL, "VOUTRHP"},
129 /* ext speaker connected to VOUTL, VOUTR */
130 {"Speaker", NULL, "VOUTL"},
131 {"Speaker", NULL, "VOUTR"},
133 /* mic is connected to VINM */
134 {"VINM", NULL, "Mic Jack"},
137 static struct platform_device *s3c24xx_snd_device;
138 static struct clk *xtal;
140 static int rx1950_startup(struct snd_pcm_substream *substream)
142 struct snd_pcm_runtime *runtime = substream->runtime;
144 runtime->hw.rate_min = hw_rates.list[0];
145 runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1];
146 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
148 return snd_pcm_hw_constraint_list(runtime, 0,
149 SNDRV_PCM_HW_PARAM_RATE,
153 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
154 struct snd_kcontrol *kcontrol, int event)
156 if (SND_SOC_DAPM_EVENT_ON(event))
157 gpio_set_value(S3C2410_GPA(1), 1);
159 gpio_set_value(S3C2410_GPA(1), 0);
164 static int rx1950_hw_params(struct snd_pcm_substream *substream,
165 struct snd_pcm_hw_params *params)
167 struct snd_soc_pcm_runtime *rtd = substream->private_data;
168 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
169 struct snd_soc_dai *codec_dai = rtd->codec_dai;
172 unsigned int rate = params_rate(params);
173 int clk_source, fs_mode;
178 clk_source = S3C24XX_CLKSRC_PCLK;
179 fs_mode = S3C2410_IISMOD_384FS;
180 div = s3c24xx_i2s_get_clockrate() / (384 * rate);
181 if (s3c24xx_i2s_get_clockrate() % (384 * rate) > (182 * rate))
186 clk_source = S3C24XX_CLKSRC_MPLL;
187 fs_mode = S3C2410_IISMOD_256FS;
188 div = clk_get_rate(xtal) / (256 * rate);
189 if (clk_get_rate(xtal) % (256 * rate) > (128 * rate))
193 printk(KERN_ERR "%s: rate %d is not supported\n",
198 /* set codec DAI configuration */
199 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
200 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
204 /* set cpu DAI configuration */
205 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
206 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
210 /* select clock source */
211 ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
216 /* set MCLK division for sample rate */
217 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
218 S3C2410_IISMOD_384FS);
222 /* set BCLK division for sample rate */
223 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
224 S3C2410_IISMOD_32FS);
228 /* set prescaler division for sample rate */
229 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
230 S3C24XX_PRESCALE(div, div));
237 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
239 struct snd_soc_codec *codec = rtd->codec;
242 /* Add rx1950 specific widgets */
243 err = snd_soc_dapm_new_controls(codec, uda1380_dapm_widgets,
244 ARRAY_SIZE(uda1380_dapm_widgets));
249 /* Set up rx1950 specific audio path audio_mapnects */
250 err = snd_soc_dapm_add_routes(codec, audio_map,
251 ARRAY_SIZE(audio_map));
256 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
257 snd_soc_dapm_enable_pin(codec, "Speaker");
259 snd_soc_dapm_sync(codec);
261 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
264 snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
267 snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
273 static int __init rx1950_init(void)
277 /* configure some gpios */
278 ret = gpio_request(S3C2410_GPA(1), "speaker-power");
282 ret = gpio_direction_output(S3C2410_GPA(1), 0);
286 s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
287 if (!s3c24xx_snd_device) {
292 platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
293 ret = platform_device_add(s3c24xx_snd_device);
296 platform_device_put(s3c24xx_snd_device);
300 xtal = clk_get(&s3c24xx_snd_device->dev, "xtal");
304 platform_device_unregister(s3c24xx_snd_device);
314 gpio_free(S3C2410_GPA(1));
320 static void __exit rx1950_exit(void)
322 platform_device_unregister(s3c24xx_snd_device);
323 snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
326 gpio_free(S3C2410_GPA(1));
329 module_init(rx1950_init);
330 module_exit(rx1950_exit);
332 /* Module information */
333 MODULE_AUTHOR("Vasily Khoruzhick");
334 MODULE_DESCRIPTION("ALSA SoC RX1950");
335 MODULE_LICENSE("GPL");