--- /dev/null
+/*
+ * rx1950.c -- ALSA Soc Audio Layer
+ *
+ * Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com>
+ *
+ * Based on smdk2440.c and magician.c
+ *
+ * Authors: Graeme Gregory graeme.gregory@wolfsonmicro.com
+ * Philipp Zabel <philipp.zabel@gmail.com>
+ * Denis Grigoriev <dgreenday@gmail.com>
+ * Vasily Khoruzhick <anarsoul@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/clk.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/uda1380.h>
+#include <sound/jack.h>
+
+#include <plat/regs-iis.h>
+
+#include <mach/regs-clock.h>
+
+#include "s3c-dma.h"
+#include "s3c24xx-i2s.h"
+#include "../codecs/uda1380.h"
+
+static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
+static int rx1950_startup(struct snd_pcm_substream *substream);
+static int rx1950_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params);
+static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event);
+
+static unsigned int rates[] = {
+ 16000,
+ 44100,
+ 48000,
+ 88200,
+};
+
+static struct snd_pcm_hw_constraint_list hw_rates = {
+ .count = ARRAY_SIZE(rates),
+ .list = rates,
+ .mask = 0,
+};
+
+static struct snd_soc_jack hp_jack;
+
+static struct snd_soc_jack_pin hp_jack_pins[] = {
+ {
+ .pin = "Headphone Jack",
+ .mask = SND_JACK_HEADPHONE,
+ },
+ {
+ .pin = "Speaker",
+ .mask = SND_JACK_HEADPHONE,
+ .invert = 1,
+ },
+};
+
+static struct snd_soc_jack_gpio hp_jack_gpios[] = {
+ [0] = {
+ .gpio = S3C2410_GPG(12),
+ .name = "hp-gpio",
+ .report = SND_JACK_HEADPHONE,
+ .invert = 1,
+ .debounce_time = 200,
+ },
+};
+
+static struct snd_soc_ops rx1950_ops = {
+ .startup = rx1950_startup,
+ .hw_params = rx1950_hw_params,
+};
+
+/* s3c24xx digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
+ {
+ .name = "uda1380",
+ .stream_name = "UDA1380 Duplex",
+ .cpu_dai_name = "s3c24xx-iis",
+ .codec_dai_name = "uda1380-hifi",
+ .init = rx1950_uda1380_init,
+ .platform_name = "s3c24xx-pcm-audio",
+ .codec_name = "uda1380-codec.0-001a",
+ .ops = &rx1950_ops,
+ },
+};
+
+static struct snd_soc_card rx1950_asoc = {
+ .name = "rx1950",
+ .dai_link = rx1950_uda1380_dai,
+ .num_links = ARRAY_SIZE(rx1950_uda1380_dai),
+};
+
+/* rx1950 machine dapm widgets */
+static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_MIC("Mic Jack", NULL),
+ SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
+};
+
+/* rx1950 machine audio_map */
+static const struct snd_soc_dapm_route audio_map[] = {
+ /* headphone connected to VOUTLHP, VOUTRHP */
+ {"Headphone Jack", NULL, "VOUTLHP"},
+ {"Headphone Jack", NULL, "VOUTRHP"},
+
+ /* ext speaker connected to VOUTL, VOUTR */
+ {"Speaker", NULL, "VOUTL"},
+ {"Speaker", NULL, "VOUTR"},
+
+ /* mic is connected to VINM */
+ {"VINM", NULL, "Mic Jack"},
+};
+
+static struct platform_device *s3c24xx_snd_device;
+static struct clk *xtal;
+
+static int rx1950_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ runtime->hw.rate_min = hw_rates.list[0];
+ runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1];
+ runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
+
+ return snd_pcm_hw_constraint_list(runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE,
+ &hw_rates);
+}
+
+static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ if (SND_SOC_DAPM_EVENT_ON(event))
+ gpio_set_value(S3C2410_GPA(1), 1);
+ else
+ gpio_set_value(S3C2410_GPA(1), 0);
+
+ return 0;
+}
+
+static int rx1950_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ int div;
+ int ret;
+ unsigned int rate = params_rate(params);
+ int clk_source, fs_mode;
+
+ switch (rate) {
+ case 16000:
+ case 48000:
+ clk_source = S3C24XX_CLKSRC_PCLK;
+ fs_mode = S3C2410_IISMOD_384FS;
+ div = s3c24xx_i2s_get_clockrate() / (384 * rate);
+ if (s3c24xx_i2s_get_clockrate() % (384 * rate) > (182 * rate))
+ div++;
+ break;
+ case 44100:
+ case 88200:
+ clk_source = S3C24XX_CLKSRC_MPLL;
+ fs_mode = S3C2410_IISMOD_256FS;
+ div = clk_get_rate(xtal) / (256 * rate);
+ if (clk_get_rate(xtal) % (256 * rate) > (128 * rate))
+ div++;
+ break;
+ default:
+ printk(KERN_ERR "%s: rate %d is not supported\n",
+ __func__, rate);
+ return -EINVAL;
+ }
+
+ /* set codec DAI configuration */
+ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
+ if (ret < 0)
+ return ret;
+
+ /* set cpu DAI configuration */
+ ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
+ if (ret < 0)
+ return ret;
+
+ /* select clock source */
+ ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
+ SND_SOC_CLOCK_OUT);
+ if (ret < 0)
+ return ret;
+
+ /* set MCLK division for sample rate */
+ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
+ S3C2410_IISMOD_384FS);
+ if (ret < 0)
+ return ret;
+
+ /* set BCLK division for sample rate */
+ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
+ S3C2410_IISMOD_32FS);
+ if (ret < 0)
+ return ret;
+
+ /* set prescaler division for sample rate */
+ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
+ S3C24XX_PRESCALE(div, div));
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_codec *codec = rtd->codec;
+ int err;
+
+ /* Add rx1950 specific widgets */
+ err = snd_soc_dapm_new_controls(codec, uda1380_dapm_widgets,
+ ARRAY_SIZE(uda1380_dapm_widgets));
+
+ if (err)
+ return err;
+
+ /* Set up rx1950 specific audio path audio_mapnects */
+ err = snd_soc_dapm_add_routes(codec, audio_map,
+ ARRAY_SIZE(audio_map));
+
+ if (err)
+ return err;
+
+ snd_soc_dapm_enable_pin(codec, "Headphone Jack");
+ snd_soc_dapm_enable_pin(codec, "Speaker");
+
+ snd_soc_dapm_sync(codec);
+
+ snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
+ &hp_jack);
+
+ snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
+ hp_jack_pins);
+
+ snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
+ hp_jack_gpios);
+
+ return 0;
+}
+
+static int __init rx1950_init(void)
+{
+ int ret;
+
+ /* configure some gpios */
+ ret = gpio_request(S3C2410_GPA(1), "speaker-power");
+ if (ret)
+ goto err_gpio;
+
+ ret = gpio_direction_output(S3C2410_GPA(1), 0);
+ if (ret)
+ goto err_gpio_conf;
+
+ s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!s3c24xx_snd_device) {
+ ret = -ENOMEM;
+ goto err_plat_alloc;
+ }
+
+ platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
+ ret = platform_device_add(s3c24xx_snd_device);
+
+ if (ret) {
+ platform_device_put(s3c24xx_snd_device);
+ goto err_plat_add;
+ }
+
+ xtal = clk_get(&s3c24xx_snd_device->dev, "xtal");
+
+ if (IS_ERR(xtal)) {
+ ret = PTR_ERR(xtal);
+ platform_device_unregister(s3c24xx_snd_device);
+ goto err_clk;
+ }
+
+ return 0;
+
+err_clk:
+err_plat_add:
+err_plat_alloc:
+err_gpio_conf:
+ gpio_free(S3C2410_GPA(1));
+
+err_gpio:
+ return ret;
+}
+
+static void __exit rx1950_exit(void)
+{
+ platform_device_unregister(s3c24xx_snd_device);
+ snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
+ hp_jack_gpios);
+ clk_put(xtal);
+ gpio_free(S3C2410_GPA(1));
+}
+
+module_init(rx1950_init);
+module_exit(rx1950_exit);
+
+/* Module information */
+MODULE_AUTHOR("Vasily Khoruzhick");
+MODULE_DESCRIPTION("ALSA SoC RX1950");
+MODULE_LICENSE("GPL");
projects / platform / kernel / linux-exynos.git / commitdiff