3 files changed, 186 insertions, 0 deletions

diff --git a/sound/soc/samsung/Kconfig b/sound/soc/samsung/Kconfig
index c611e45ff71d..54b0e4b7faf7 100644
--- a/sound/soc/samsung/Kconfig
+++ b/sound/soc/samsung/Kconfig
@@ -171,6 +171,14 @@ config SND_SOC_SMDK_WM8580_PCM
         help
           Say Y if you want to add support for SoC audio on the SMDK.
 
+config SND_SOC_SMDK_WM8994_PCM
+        tristate "SoC PCM Audio support for WM8994 on SMDK"
+        depends on SND_SOC_SAMSUNG && (MACH_SMDKC210 || MACH_SMDKV310)
+        select SND_SOC_WM8994
+        select SND_SAMSUNG_PCM
+        help
+          Say Y if you want to add support for SoC audio on the SMDK
+
 config SND_SOC_SPEYSIDE
         tristate "Audio support for Wolfson Speyside"
         depends on SND_SOC_SAMSUNG && MACH_WLF_CRAGG_6410
diff --git a/sound/soc/samsung/Makefile b/sound/soc/samsung/Makefile
index e04df65db1fc..9eb3b12eb72f 100644
--- a/sound/soc/samsung/Makefile
+++ b/sound/soc/samsung/Makefile
@@ -35,6 +35,7 @@ snd-soc-s3c64xx-smartq-wm8987-objs := smartq_wm8987.o
 snd-soc-goni-wm8994-objs := goni_wm8994.o
 snd-soc-smdk-spdif-objs := smdk_spdif.o
 snd-soc-smdk-wm8580pcm-objs := smdk_wm8580pcm.o
+snd-soc-smdk-wm8994pcm-objs := smdk_wm8994pcm.o
 snd-soc-speyside-objs := speyside.o
 snd-soc-speyside-wm8962-objs := speyside_wm8962.o
 
@@ -55,5 +56,6 @@ obj-$(CONFIG_SND_SOC_SMARTQ) += snd-soc-s3c64xx-smartq-wm8987.o
 obj-$(CONFIG_SND_SOC_SAMSUNG_SMDK_SPDIF) += snd-soc-smdk-spdif.o
 obj-$(CONFIG_SND_SOC_GONI_AQUILA_WM8994) += snd-soc-goni-wm8994.o
 obj-$(CONFIG_SND_SOC_SMDK_WM8580_PCM) += snd-soc-smdk-wm8580pcm.o
+obj-$(CONFIG_SND_SOC_SMDK_WM8994_PCM) += snd-soc-smdk-wm8994pcm.o
 obj-$(CONFIG_SND_SOC_SPEYSIDE) += snd-soc-speyside.o
 obj-$(CONFIG_SND_SOC_SPEYSIDE_WM8962) += snd-soc-speyside-wm8962.o
diff --git a/sound/soc/samsung/smdk_wm8994pcm.c b/sound/soc/samsung/smdk_wm8994pcm.c
new file mode 100644
index 000000000000..5f2111685480
--- /dev/null
+++ b/sound/soc/samsung/smdk_wm8994pcm.c
@@ -0,0 +1,176 @@
+/*
+ *  sound/soc/samsung/smdk_wm8994pcm.c
+ *
+ *  Copyright (c) 2011 Samsung Electronics Co., Ltd
+ *              http://www.samsung.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 <sound/soc.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+
+#include "../codecs/wm8994.h"
+#include "dma.h"
+#include "pcm.h"
+
+/*
+ * Board Settings:
+ *  o '1' means 'ON'
+ *  o '0' means 'OFF'
+ *  o 'X' means 'Don't care'
+ *
+ * SMDKC210, SMDKV310: CFG3- 1001, CFG5-1000, CFG7-111111
+ */
+
+/*
+ * Configure audio route as :-
+ * $ amixer sset 'DAC1' on,on
+ * $ amixer sset 'Right Headphone Mux' 'DAC'
+ * $ amixer sset 'Left Headphone Mux' 'DAC'
+ * $ amixer sset 'DAC1R Mixer AIF1.1' on
+ * $ amixer sset 'DAC1L Mixer AIF1.1' on
+ * $ amixer sset 'IN2L' on
+ * $ amixer sset 'IN2L PGA IN2LN' on
+ * $ amixer sset 'MIXINL IN2L' on
+ * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
+ * $ amixer sset 'IN2R' on
+ * $ amixer sset 'IN2R PGA IN2RN' on
+ * $ amixer sset 'MIXINR IN2R' on
+ * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
+ */
+
+/* SMDK has a 16.9344MHZ crystal attached to WM8994 */
+#define SMDK_WM8994_FREQ 16934400
+
+static int smdk_wm8994_pcm_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 *codec_dai = rtd->codec_dai;
+        struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+        unsigned long mclk_freq;
+        int rfs, ret;
+
+        switch(params_rate(params)) {
+        case 8000:
+                rfs = 512;
+                break;
+        default:
+                dev_err(cpu_dai->dev, "%s:%d Sampling Rate %u not supported!\n",
+                __func__, __LINE__, params_rate(params));
+                return -EINVAL;
+        }
+
+        mclk_freq = params_rate(params) * rfs;
+
+        /* Set the codec DAI configuration */
+        ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B
+                                | SND_SOC_DAIFMT_IB_NF
+                                | SND_SOC_DAIFMT_CBS_CFS);
+        if (ret < 0)
+                return ret;
+
+        /* Set the cpu DAI configuration */
+        ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_B
+                                | SND_SOC_DAIFMT_IB_NF
+                                | SND_SOC_DAIFMT_CBS_CFS);
+        if (ret < 0)
+                return ret;
+
+        ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
+                                        mclk_freq, SND_SOC_CLOCK_IN);
+        if (ret < 0)
+                return ret;
+
+        ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
+                                        SMDK_WM8994_FREQ, mclk_freq);
+        if (ret < 0)
+                return ret;
+
+        /* Set PCM source clock on CPU */
+        ret = snd_soc_dai_set_sysclk(cpu_dai, S3C_PCM_CLKSRC_MUX,
+                                        mclk_freq, SND_SOC_CLOCK_IN);
+        if (ret < 0)
+                return ret;
+
+        /* Set SCLK_DIV for making bclk */
+        ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_PCM_SCLK_PER_FS, rfs);
+        if (ret < 0)
+                return ret;
+
+        return 0;
+}
+
+static struct snd_soc_ops smdk_wm8994_pcm_ops = {
+        .hw_params = smdk_wm8994_pcm_hw_params,
+};
+
+static struct snd_soc_dai_link smdk_dai[] = {
+        {
+                .name = "WM8994 PAIF PCM",
+                .stream_name = "Primary PCM",
+                .cpu_dai_name = "samsung-pcm.0",
+                .codec_dai_name = "wm8994-aif1",
+                .platform_name = "samsung-audio",
+                .codec_name = "wm8994-codec",
+                .ops = &smdk_wm8994_pcm_ops,
+        },
+};
+
+static struct snd_soc_card smdk_pcm = {
+        .name = "SMDK-PCM",
+        .dai_link = smdk_dai,
+        .num_links = 1,
+};
+
+static int __devinit snd_smdk_probe(struct platform_device *pdev)
+{
+        int ret = 0;
+
+        smdk_pcm.dev = &pdev->dev;
+        ret = snd_soc_register_card(&smdk_pcm);
+        if (ret) {
+                dev_err(&pdev->dev, "snd_soc_register_card failed %d\n", ret);
+                return ret;
+        }
+
+        return 0;
+}
+
+static int __devexit snd_smdk_remove(struct platform_device *pdev)
+{
+        snd_soc_unregister_card(&smdk_pcm);
+        platform_set_drvdata(pdev, NULL);
+        return 0;
+}
+
+static struct platform_driver snd_smdk_driver = {
+        .driver = {
+                .owner = THIS_MODULE,
+                .name = "samsung-smdk-pcm",
+        },
+        .probe = snd_smdk_probe,
+        .remove = __devexit_p(snd_smdk_remove),
+};
+
+static int __init smdk_audio_init(void)
+{
+        return platform_driver_register(&snd_smdk_driver);
+}
+
+module_init(smdk_audio_init);
+
+static void __exit smdk_audio_exit(void)
+{
+        platform_driver_unregister(&snd_smdk_driver);
+}
+
+module_exit(smdk_audio_exit);
+
+MODULE_AUTHOR("Sangbeom Kim, <sbkim73@samsung.com>");
+MODULE_DESCRIPTION("ALSA SoC SMDK WM8994 for PCM");
+MODULE_LICENSE("GPL");