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authorTushar Behera <tushar.behera@linaro.org>2014-04-28 10:14:39 +0530
committerMark Brown <broonie@linaro.org>2014-04-29 12:09:38 -0700
commit31c26a6a842d541ca475a482112dda5993df2374 (patch)
tree8a6cf5f7d77bafcc3f23744dd5a6efd325c0f360 /sound
parentd66eac3e2b09690e28f9ac405969d6857325ee9d (diff)
downloadblackbird-op-linux-31c26a6a842d541ca475a482112dda5993df2374.tar.gz
blackbird-op-linux-31c26a6a842d541ca475a482112dda5993df2374.zip
ASoC: samsung: Add sound card driver for Snow board
Added machine driver to instantiate I2S based sound card on Snow board. It has MAX98095 audio codec on board. There are some other variants for Snow board which have MAX98090 audio codec. Hence support for MAX98090 is also added to this driver. Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/samsung/Kconfig10
-rw-r--r--sound/soc/samsung/Makefile2
-rw-r--r--sound/soc/samsung/snow.c122
3 files changed, 134 insertions, 0 deletions
diff --git a/sound/soc/samsung/Kconfig b/sound/soc/samsung/Kconfig
index f2e289180e46..50aa28963f49 100644
--- a/sound/soc/samsung/Kconfig
+++ b/sound/soc/samsung/Kconfig
@@ -231,3 +231,13 @@ config SND_SOC_LITTLEMILL
select SND_SAMSUNG_I2S
select MFD_WM8994
select SND_SOC_WM8994
+
+config SND_SOC_SNOW
+ tristate "Audio support for Google Snow boards"
+ depends on SND_SOC_SAMSUNG
+ select SND_SOC_MAX98090
+ select SND_SOC_MAX98095
+ select SND_SAMSUNG_I2S
+ help
+ Say Y if you want to add audio support for various Snow
+ boards based on Exynos5 series of SoCs.
diff --git a/sound/soc/samsung/Makefile b/sound/soc/samsung/Makefile
index 86715d8efee6..6d0212ba571c 100644
--- a/sound/soc/samsung/Makefile
+++ b/sound/soc/samsung/Makefile
@@ -34,6 +34,7 @@ snd-soc-h1940-uda1380-objs := h1940_uda1380.o
snd-soc-rx1950-uda1380-objs := rx1950_uda1380.o
snd-soc-smdk-wm8580-objs := smdk_wm8580.o
snd-soc-smdk-wm8994-objs := smdk_wm8994.o
+snd-soc-snow-objs := snow.o
snd-soc-smdk-wm9713-objs := smdk_wm9713.o
snd-soc-s3c64xx-smartq-wm8987-objs := smartq_wm8987.o
snd-soc-goni-wm8994-objs := goni_wm8994.o
@@ -58,6 +59,7 @@ obj-$(CONFIG_SND_SOC_SAMSUNG_H1940_UDA1380) += snd-soc-h1940-uda1380.o
obj-$(CONFIG_SND_SOC_SAMSUNG_RX1950_UDA1380) += snd-soc-rx1950-uda1380.o
obj-$(CONFIG_SND_SOC_SAMSUNG_SMDK_WM8580) += snd-soc-smdk-wm8580.o
obj-$(CONFIG_SND_SOC_SAMSUNG_SMDK_WM8994) += snd-soc-smdk-wm8994.o
+obj-$(CONFIG_SND_SOC_SNOW) += snd-soc-snow.o
obj-$(CONFIG_SND_SOC_SAMSUNG_SMDK_WM9713) += snd-soc-smdk-wm9713.o
obj-$(CONFIG_SND_SOC_SMARTQ) += snd-soc-s3c64xx-smartq-wm8987.o
obj-$(CONFIG_SND_SOC_SAMSUNG_SMDK_SPDIF) += snd-soc-smdk-spdif.o
diff --git a/sound/soc/samsung/snow.c b/sound/soc/samsung/snow.c
new file mode 100644
index 000000000000..0fa89a41d8c0
--- /dev/null
+++ b/sound/soc/samsung/snow.c
@@ -0,0 +1,122 @@
+/*
+ * ASoC machine driver for Snow boards
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
+#include <sound/soc.h>
+
+#include "i2s.h"
+
+#define FIN_PLL_RATE 24000000
+
+static struct snd_soc_dai_link snow_dai[] = {
+ {
+ .name = "Primary",
+ .stream_name = "Primary",
+ .codec_dai_name = "HiFi",
+ .dai_fmt = SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ },
+};
+
+static int snow_late_probe(struct snd_soc_card *card)
+{
+ struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
+ struct snd_soc_dai *cpu_dai = card->rtd[0].cpu_dai;
+ int ret;
+
+ /* Set the MCLK rate for the codec */
+ ret = snd_soc_dai_set_sysclk(codec_dai, 0,
+ FIN_PLL_RATE, SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+
+ /* Select I2S Bus clock to set RCLK and BCLK */
+ ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
+ 0, SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static struct snd_soc_card snow_snd = {
+ .name = "Snow-I2S",
+ .dai_link = snow_dai,
+ .num_links = ARRAY_SIZE(snow_dai),
+
+ .late_probe = snow_late_probe,
+};
+
+static int snow_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &snow_snd;
+ struct device_node *i2s_node, *codec_node;
+ int i, ret;
+
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "samsung,i2s-controller", 0);
+ if (!i2s_node) {
+ dev_err(&pdev->dev,
+ "Property 'i2s-controller' missing or invalid\n");
+ return -EINVAL;
+ }
+
+ codec_node = of_parse_phandle(pdev->dev.of_node,
+ "samsung,audio-codec", 0);
+ if (!codec_node) {
+ dev_err(&pdev->dev,
+ "Property 'audio-codec' missing or invalid\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(snow_dai); i++) {
+ snow_dai[i].codec_of_node = codec_node;
+ snow_dai[i].cpu_of_node = i2s_node;
+ snow_dai[i].platform_of_node = i2s_node;
+ }
+
+ card->dev = &pdev->dev;
+
+ 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;
+ }
+
+ return ret;
+}
+
+static const struct of_device_id snow_of_match[] = {
+ { .compatible = "google,snow-audio-max98090", },
+ { .compatible = "google,snow-audio-max98095", },
+ {},
+};
+
+static struct platform_driver snow_driver = {
+ .driver = {
+ .name = "snow-audio",
+ .owner = THIS_MODULE,
+ .of_match_table = snow_of_match,
+ },
+ .probe = snow_probe,
+};
+
+module_platform_driver(snow_driver);
+
+MODULE_DESCRIPTION("ALSA SoC Audio machine driver for Snow");
+MODULE_LICENSE("GPL");
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