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authorJassi Brar <jassi.brar@samsung.com>2010-12-20 03:05:57 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-12-20 14:46:27 +0100
commit96657d33b9ba4e7bd3728ee319ed96ed3f09c40b (patch)
tree756311f61cae76b279b8145b02e483a686c0ec5c /sound/soc/samsung/smdk_wm8994.c
parentASoC: SMDKV310: Enable AC97 device (diff)
downloadlinux-96657d33b9ba4e7bd3728ee319ed96ed3f09c40b.tar.xz
linux-96657d33b9ba4e7bd3728ee319ed96ed3f09c40b.zip
ASoC: SMDKV310: Add I2S support
Add ASoC machine driver for SMDKV310/C210 boards that have a WM8994 attached to I2S-0. Signed-off-by: Jassi Brar <jassi.brar@samsung.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/samsung/smdk_wm8994.c')
-rw-r--r--sound/soc/samsung/smdk_wm8994.c176
1 files changed, 176 insertions, 0 deletions
diff --git a/sound/soc/samsung/smdk_wm8994.c b/sound/soc/samsung/smdk_wm8994.c
new file mode 100644
index 000000000000..e7c1009a1e1d
--- /dev/null
+++ b/sound/soc/samsung/smdk_wm8994.c
@@ -0,0 +1,176 @@
+/*
+ * smdk_wm8994.c
+ *
+ * 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 "../codecs/wm8994.h"
+
+ /*
+ * Default CFG switch settings to use this driver:
+ * SMDKV310: 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 16.934MHZ crystal attached to WM8994 */
+#define SMDK_WM8994_FREQ 16934000
+
+static int smdk_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;
+ unsigned int pll_out;
+ int ret;
+
+ /* AIF1CLK should be >=3MHz for optimal performance */
+ if (params_rate(params) == 8000 || params_rate(params) == 11025)
+ pll_out = params_rate(params) * 512;
+ else
+ pll_out = params_rate(params) * 256;
+
+ 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;
+
+ 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_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
+ SMDK_WM8994_FREQ, pll_out);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
+ pll_out, SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+/*
+ * SMDK WM8994 DAI operations.
+ */
+static struct snd_soc_ops smdk_ops = {
+ .hw_params = smdk_hw_params,
+};
+
+static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_dapm_context *dapm = &codec->dapm;
+
+ /* HeadPhone */
+ snd_soc_dapm_enable_pin(dapm, "HPOUT1R");
+ snd_soc_dapm_enable_pin(dapm, "HPOUT1L");
+
+ /* MicIn */
+ snd_soc_dapm_enable_pin(dapm, "IN1LN");
+ snd_soc_dapm_enable_pin(dapm, "IN1RN");
+
+ /* LineIn */
+ snd_soc_dapm_enable_pin(dapm, "IN2LN");
+ snd_soc_dapm_enable_pin(dapm, "IN2RN");
+
+ /* Other pins NC */
+ snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
+ snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
+ snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
+ snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
+ snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
+ snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
+ snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
+ snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
+ snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
+ snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
+ snd_soc_dapm_nc_pin(dapm, "IN1LP");
+ snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
+ snd_soc_dapm_nc_pin(dapm, "IN1RP");
+ snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
+
+ snd_soc_dapm_sync(dapm);
+
+ return 0;
+}
+
+static struct snd_soc_dai_link smdk_dai[] = {
+ { /* Primary DAI i/f */
+ .name = "WM8994 AIF1",
+ .stream_name = "Pri_Dai",
+ .cpu_dai_name = "samsung-i2s.0",
+ .codec_dai_name = "wm8994-aif1",
+ .platform_name = "samsung-audio",
+ .codec_name = "wm8994-codec",
+ .init = smdk_wm8994_init_paiftx,
+ .ops = &smdk_ops,
+ }, { /* Sec_Fifo Playback i/f */
+ .name = "Sec_FIFO TX",
+ .stream_name = "Sec_Dai",
+ .cpu_dai_name = "samsung-i2s.4",
+ .codec_dai_name = "wm8994-aif1",
+ .platform_name = "samsung-audio",
+ .codec_name = "wm8994-codec",
+ .ops = &smdk_ops,
+ },
+};
+
+static struct snd_soc_card smdk = {
+ .name = "SMDK-I2S",
+ .dai_link = smdk_dai,
+ .num_links = ARRAY_SIZE(smdk_dai),
+};
+
+static struct platform_device *smdk_snd_device;
+
+static int __init smdk_audio_init(void)
+{
+ int ret;
+
+ smdk_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!smdk_snd_device)
+ return -ENOMEM;
+
+ platform_set_drvdata(smdk_snd_device, &smdk);
+
+ ret = platform_device_add(smdk_snd_device);
+ if (ret)
+ platform_device_put(smdk_snd_device);
+
+ return ret;
+}
+module_init(smdk_audio_init);
+
+static void __exit smdk_audio_exit(void)
+{
+ platform_device_unregister(smdk_snd_device);
+}
+module_exit(smdk_audio_exit);
+
+MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
+MODULE_LICENSE("GPL");