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Diffstat (limited to 'sound/soc/samsung/smdk_wm8994.c')
-rw-r--r--sound/soc/samsung/smdk_wm8994.c204
1 files changed, 204 insertions, 0 deletions
diff --git a/sound/soc/samsung/smdk_wm8994.c b/sound/soc/samsung/smdk_wm8994.c
new file mode 100644
index 000000000..d38595fbd
--- /dev/null
+++ b/sound/soc/samsung/smdk_wm8994.c
@@ -0,0 +1,204 @@
+/*
+ * 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"
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.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
+
+struct smdk_wm8994_data {
+ int mclk1_rate;
+};
+
+/* Default SMDKs */
+static struct smdk_wm8994_data smdk_board_data = {
+ .mclk1_rate = SMDK_WM8994_FREQ,
+};
+
+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 *codec_dai = rtd->codec_dai;
+ unsigned int pll_out;
+ int ret;
+
+ /* AIF1CLK should be >=3MHz for optimal performance */
+ if (params_width(params) == 24)
+ pll_out = params_rate(params) * 384;
+ else 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_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;
+
+ /* 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");
+
+ 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-i2s.0",
+ .codec_name = "wm8994-codec",
+ .init = smdk_wm8994_init_paiftx,
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
+ .ops = &smdk_ops,
+ }, { /* Sec_Fifo Playback i/f */
+ .name = "Sec_FIFO TX",
+ .stream_name = "Sec_Dai",
+ .cpu_dai_name = "samsung-i2s-sec",
+ .codec_dai_name = "wm8994-aif1",
+ .platform_name = "samsung-i2s-sec",
+ .codec_name = "wm8994-codec",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
+ .ops = &smdk_ops,
+ },
+};
+
+static struct snd_soc_card smdk = {
+ .name = "SMDK-I2S",
+ .owner = THIS_MODULE,
+ .dai_link = smdk_dai,
+ .num_links = ARRAY_SIZE(smdk_dai),
+};
+
+static const struct of_device_id samsung_wm8994_of_match[] = {
+ { .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data },
+ {},
+};
+MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
+
+static int smdk_audio_probe(struct platform_device *pdev)
+{
+ int ret;
+ struct device_node *np = pdev->dev.of_node;
+ struct snd_soc_card *card = &smdk;
+ struct smdk_wm8994_data *board;
+ const struct of_device_id *id;
+
+ card->dev = &pdev->dev;
+
+ board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
+ if (!board)
+ return -ENOMEM;
+
+ if (np) {
+ smdk_dai[0].cpu_dai_name = NULL;
+ smdk_dai[0].cpu_of_node = of_parse_phandle(np,
+ "samsung,i2s-controller", 0);
+ if (!smdk_dai[0].cpu_of_node) {
+ dev_err(&pdev->dev,
+ "Property 'samsung,i2s-controller' missing or invalid\n");
+ ret = -EINVAL;
+ }
+
+ smdk_dai[0].platform_name = NULL;
+ smdk_dai[0].platform_of_node = smdk_dai[0].cpu_of_node;
+ }
+
+ id = of_match_device(of_match_ptr(samsung_wm8994_of_match), &pdev->dev);
+ if (id)
+ *board = *((struct smdk_wm8994_data *)id->data);
+
+ platform_set_drvdata(pdev, board);
+
+ ret = devm_snd_soc_register_card(&pdev->dev, card);
+
+ if (ret)
+ dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
+
+ return ret;
+}
+
+static struct platform_driver smdk_audio_driver = {
+ .driver = {
+ .name = "smdk-audio-wm8994",
+ .of_match_table = of_match_ptr(samsung_wm8994_of_match),
+ .pm = &snd_soc_pm_ops,
+ },
+ .probe = smdk_audio_probe,
+};
+
+module_platform_driver(smdk_audio_driver);
+
+MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:smdk-audio-wm8994");