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-rw-r--r--sound/soc/samsung/Kconfig6
-rw-r--r--sound/soc/samsung/Makefile2
-rw-r--r--sound/soc/samsung/littlemill.c227
3 files changed, 235 insertions, 0 deletions
diff --git a/sound/soc/samsung/Kconfig b/sound/soc/samsung/Kconfig
index 71f38de18222..7aaaf8e8056f 100644
--- a/sound/soc/samsung/Kconfig
+++ b/sound/soc/samsung/Kconfig
@@ -205,3 +205,9 @@ config SND_SOC_LOWLAND
select SND_SAMSUNG_I2S
select SND_SOC_WM5100
select SND_SOC_WM9081
+
+config SND_SOC_LITTLEMILL
+ tristate "Audio support for Wolfson Littlemill"
+ depends on SND_SOC_SAMSUNG && MACH_WLF_CRAGG_6410
+ select SND_SAMSUNG_I2S
+ select SND_SOC_WM8994
diff --git a/sound/soc/samsung/Makefile b/sound/soc/samsung/Makefile
index 7802c25db775..c9564e3547bb 100644
--- a/sound/soc/samsung/Makefile
+++ b/sound/soc/samsung/Makefile
@@ -41,6 +41,7 @@ snd-soc-smdk-wm8994pcm-objs := smdk_wm8994pcm.o
snd-soc-speyside-objs := speyside.o
snd-soc-speyside-wm8962-objs := speyside_wm8962.o
snd-soc-lowland-objs := lowland.o
+snd-soc-littlemill-objs := littlemill.o
obj-$(CONFIG_SND_SOC_SAMSUNG_JIVE_WM8750) += snd-soc-jive-wm8750.o
obj-$(CONFIG_SND_SOC_SAMSUNG_NEO1973_WM8753) += snd-soc-neo1973-wm8753.o
@@ -63,3 +64,4 @@ obj-$(CONFIG_SND_SOC_SMDK_WM8994_PCM) += snd-soc-smdk-wm8994pcm.o
obj-$(CONFIG_SND_SOC_SPEYSIDE) += snd-soc-speyside.o
obj-$(CONFIG_SND_SOC_SPEYSIDE_WM8962) += snd-soc-speyside-wm8962.o
obj-$(CONFIG_SND_SOC_LOWLAND) += snd-soc-lowland.o
+obj-$(CONFIG_SND_SOC_LITTLEMILL) += snd-soc-littlemill.o
diff --git a/sound/soc/samsung/littlemill.c b/sound/soc/samsung/littlemill.c
new file mode 100644
index 000000000000..d2a44ab3c207
--- /dev/null
+++ b/sound/soc/samsung/littlemill.c
@@ -0,0 +1,227 @@
+/*
+ * Littlemill audio support
+ *
+ * Copyright 2011 Wolfson Microelectronics
+ *
+ * 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/soc-dapm.h>
+#include <sound/jack.h>
+#include <linux/gpio.h>
+#include <linux/module.h>
+
+#include "../codecs/wm8994.h"
+
+static int sample_rate = 44100;
+
+static int littlemill_set_bias_level(struct snd_soc_card *card,
+ struct snd_soc_dapm_context *dapm,
+ enum snd_soc_bias_level level)
+{
+ struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
+ int ret;
+
+ if (dapm->dev != codec_dai->dev)
+ return 0;
+
+ switch (level) {
+ case SND_SOC_BIAS_PREPARE:
+ /*
+ * If we've not already clocked things via hw_params()
+ * then do so now, otherwise these are noops.
+ */
+ if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
+ ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1,
+ WM8994_FLL_SRC_MCLK2, 32768,
+ sample_rate * 512);
+ if (ret < 0) {
+ pr_err("Failed to start FLL: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_sysclk(codec_dai,
+ WM8994_SYSCLK_FLL1,
+ sample_rate * 512,
+ SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ pr_err("Failed to set SYSCLK: %d\n", ret);
+ return ret;
+ }
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int littlemill_set_bias_level_post(struct snd_soc_card *card,
+ struct snd_soc_dapm_context *dapm,
+ enum snd_soc_bias_level level)
+{
+ struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
+ int ret;
+
+ if (dapm->dev != codec_dai->dev)
+ return 0;
+
+ switch (level) {
+ case SND_SOC_BIAS_STANDBY:
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK2,
+ 32768, SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ pr_err("Failed to switch away from FLL: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1,
+ 0, 0, 0);
+ if (ret < 0) {
+ pr_err("Failed to stop FLL: %d\n", ret);
+ return ret;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ dapm->bias_level = level;
+
+ return 0;
+}
+
+static int littlemill_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;
+ int ret;
+
+ sample_rate = params_rate(params);
+
+ ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1,
+ WM8994_FLL_SRC_MCLK2, 32768,
+ sample_rate * 512);
+ if (ret < 0) {
+ pr_err("Failed to start FLL: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_sysclk(codec_dai,
+ WM8994_SYSCLK_FLL1,
+ sample_rate * 512,
+ SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ pr_err("Failed to set SYSCLK: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct snd_soc_ops littlemill_ops = {
+ .hw_params = littlemill_hw_params,
+};
+
+static struct snd_soc_dai_link littlemill_dai[] = {
+ {
+ .name = "CPU",
+ .stream_name = "CPU",
+ .cpu_dai_name = "samsung-i2s.0",
+ .codec_dai_name = "wm8994-aif1",
+ .platform_name = "samsung-audio",
+ .codec_name = "wm8994-codec",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBM_CFM,
+ .ops = &littlemill_ops,
+ },
+};
+
+static struct snd_soc_dapm_widget widgets[] = {
+ SND_SOC_DAPM_HP("Headphone", NULL),
+};
+
+static struct snd_soc_dapm_route audio_paths[] = {
+ { "Headphone", NULL, "HPOUT1L" },
+ { "Headphone", NULL, "HPOUT1R" },
+};
+
+static int littlemill_late_probe(struct snd_soc_card *card)
+{
+ struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
+ int ret;
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK2,
+ 32768, SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static struct snd_soc_card littlemill = {
+ .name = "Littlemill",
+ .dai_link = littlemill_dai,
+ .num_links = ARRAY_SIZE(littlemill_dai),
+
+ .set_bias_level = littlemill_set_bias_level,
+ .set_bias_level_post = littlemill_set_bias_level_post,
+
+ .dapm_widgets = widgets,
+ .num_dapm_widgets = ARRAY_SIZE(widgets),
+ .dapm_routes = audio_paths,
+ .num_dapm_routes = ARRAY_SIZE(audio_paths),
+
+ .late_probe = littlemill_late_probe,
+};
+
+static __devinit int littlemill_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &littlemill;
+ int ret;
+
+ card->dev = &pdev->dev;
+
+ ret = snd_soc_register_card(card);
+ if (ret) {
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+ ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int __devexit littlemill_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+ snd_soc_unregister_card(card);
+
+ return 0;
+}
+
+static struct platform_driver littlemill_driver = {
+ .driver = {
+ .name = "littlemill",
+ .owner = THIS_MODULE,
+ .pm = &snd_soc_pm_ops,
+ },
+ .probe = littlemill_probe,
+ .remove = __devexit_p(littlemill_remove),
+};
+
+module_platform_driver(littlemill_driver);
+
+MODULE_DESCRIPTION("Littlemill audio support");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:littlemill");
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