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-rw-r--r--sound/soc/samsung/watch_ymu831.c210
1 files changed, 210 insertions, 0 deletions
diff --git a/sound/soc/samsung/watch_ymu831.c b/sound/soc/samsung/watch_ymu831.c
new file mode 100644
index 0000000..4226074
--- /dev/null
+++ b/sound/soc/samsung/watch_ymu831.c
@@ -0,0 +1,210 @@
+/*
+ * watch_ymu831.c
+ *
+ * Copyright (c) 2013 Samsung Electronics Co. Ltd
+ *
+ * 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/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/suspend.h>
+
+#include <mach/midas-sound.h>
+#include <mach/pmu.h>
+#include <mach/regs-clock.h>
+#include <mach/watch-sound.h>
+
+#include <plat/gpio-cfg.h>
+
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include "../codecs/ymu831/ymu831.h"
+
+struct watch_machine_priv {
+ int (*set_mic_bias) (int on);
+ int micbias_status;
+};
+
+static int watch_hifi_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 ret;
+
+ /* Set the codec DAI configuration */
+ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
+ | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBM_CFM);
+ if (ret < 0)
+ return ret;
+
+ /* Set the cpu DAI configuration */
+ ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
+ | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBM_CFM);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_dai_set_clkdiv(codec_dai, MC_ASOC_BCLK_MULT,
+ MC_ASOC_LRCK_X32);
+
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+
+/*
+ * WATCH YMU831 DAI operations.
+ */
+static struct snd_soc_ops watch_hifi_ops = {
+ .hw_params = watch_hifi_hw_params,
+};
+
+const char *micbias_control_text[] = {
+ "Off", "On"
+};
+
+static const struct soc_enum micbias_control_enum[] = {
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(micbias_control_text), micbias_control_text),
+};
+
+static int get_micbias_switch(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct watch_machine_priv *machine_watch
+ = snd_soc_card_get_drvdata(codec->card);
+
+ ucontrol->value.integer.value[0] = machine_watch->micbias_status;
+ return 0;
+}
+
+static int set_micbias_switch(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct watch_machine_priv *machine_watch
+ = snd_soc_card_get_drvdata(codec->card);
+ int status = ucontrol->value.integer.value[0];
+
+ machine_watch->set_mic_bias(status);
+ machine_watch->micbias_status = status;
+ return 0;
+}
+
+static const struct snd_kcontrol_new watch_controls[] = {
+ SOC_ENUM_EXT("MICBIAS SWITCH", micbias_control_enum[0],
+ get_micbias_switch, set_micbias_switch),
+};
+
+static struct snd_soc_dai_link watch_dai[] = {
+ { /* Primary DAI i/f */
+ .name = "YMU831 AIF1",
+ .stream_name = "Pri_Dai",
+ .cpu_dai_name = "samsung-i2s.0",
+ .codec_dai_name = "ymu831-da0",
+ .platform_name = "samsung-audio",
+ .codec_name = "spi0.0", /* SPI bus:0, chipselect:0 */
+ .ops = &watch_hifi_ops,
+ },
+};
+
+static struct snd_soc_card ymu831_snd_card = {
+ .name = "WATCH-YMU831",
+ .dai_link = watch_dai,
+ .num_links = ARRAY_SIZE(watch_dai),
+
+ .controls = watch_controls,
+ .num_controls = ARRAY_SIZE(watch_controls),
+};
+
+static struct platform_device *watch_snd_device;
+
+static int __devinit snd_watch_probe(struct platform_device *pdev)
+{
+ int ret;
+ struct watch_machine_priv *machine_watch;
+ struct watch_audio_platform_data *audio_pdata =
+ pdev->dev.platform_data;
+
+ machine_watch = kzalloc(sizeof *machine_watch, GFP_KERNEL);
+ if (!machine_watch) {
+ pr_err("Failed to allocate memory\n");
+ return -ENOMEM;
+ }
+ machine_watch->set_mic_bias = audio_pdata->set_micbias;
+
+ snd_soc_card_set_drvdata(&ymu831_snd_card, machine_watch);
+
+ midas_snd_set_mclk(1, 0);
+
+ watch_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!watch_snd_device) {
+ ret = -ENOMEM;
+ goto err_device_alloc;
+ }
+
+ platform_set_drvdata(watch_snd_device, &ymu831_snd_card);
+
+ ret = platform_device_add(watch_snd_device);
+ if (ret) {
+ platform_device_put(watch_snd_device);
+ }
+
+ return ret;
+
+err_device_alloc:
+ kfree(machine_watch);
+ return ret;
+}
+
+static int __devexit snd_watch_remove(struct platform_device *pdev)
+{
+ struct watch_machine_priv *machine_watch = snd_soc_card_get_drvdata(&ymu831_snd_card);
+ platform_device_unregister(watch_snd_device);
+ kfree(machine_watch);
+
+ return 0;
+}
+
+
+static struct platform_driver snd_watch_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "ymu831-card",
+ },
+ .probe = snd_watch_probe,
+ .remove = __devexit_p(snd_watch_remove),
+};
+
+
+static int __init watch_audio_init(void)
+{
+ return platform_driver_register(&snd_watch_driver);
+}
+module_init(watch_audio_init);
+
+static void __exit watch_audio_exit(void)
+{
+ platform_driver_unregister(&snd_watch_driver);
+}
+
+module_exit(watch_audio_exit);
+
+MODULE_DESCRIPTION("ALSA SoC WATCH YMU831");
+MODULE_LICENSE("GPL");