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authorBarry Song <21cnbao@gmail.com>2009-09-01 12:45:14 +0800
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-09-01 11:36:13 +0100
commitdce944dbb2d0046628bcdba882e8edc2c1d93200 (patch)
tree967293efe44fe832646f59eebe9c5bc08b243ebb /sound
parentd2c0bdaa9362c4b2ab7416420d034a0a2d1ec979 (diff)
ASoC: new board driver to connect bfin-5xx with ad1836 codec
As discussed, the patch uses the original TDM order without rewriting. For the match between TDM slot number and audio channel number, a new API need be added. Signed-off-by: Barry Song <21cnbao@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/blackfin/Kconfig8
-rw-r--r--sound/soc/blackfin/Makefile2
-rw-r--r--sound/soc/blackfin/bf5xx-ad1836.c128
3 files changed, 138 insertions, 0 deletions
diff --git a/sound/soc/blackfin/Kconfig b/sound/soc/blackfin/Kconfig
index 8a4de4de30f..ac927ffdc96 100644
--- a/sound/soc/blackfin/Kconfig
+++ b/sound/soc/blackfin/Kconfig
@@ -88,6 +88,14 @@ config SND_BF5XX_SOC_AC97
select SND_SOC_AC97_BUS
select SND_BF5XX_SOC_SPORT
+config SND_BF5XX_SOC_AD1836
+ tristate "SoC AD1836 Audio support for BF5xx"
+ depends on SND_BF5XX_TDM
+ select SND_BF5XX_SOC_TDM
+ select SND_SOC_AD1836
+ help
+ Say Y if you want to add support for SoC audio on BF5xx STAMP/EZKIT.
+
config SND_BF5XX_SOC_AD1980
tristate "SoC AD1980/1 Audio support for BF5xx"
depends on SND_BF5XX_AC97
diff --git a/sound/soc/blackfin/Makefile b/sound/soc/blackfin/Makefile
index f4d760741fa..87e30423912 100644
--- a/sound/soc/blackfin/Makefile
+++ b/sound/soc/blackfin/Makefile
@@ -16,11 +16,13 @@ obj-$(CONFIG_SND_BF5XX_SOC_I2S) += snd-soc-bf5xx-i2s.o
obj-$(CONFIG_SND_BF5XX_SOC_TDM) += snd-soc-bf5xx-tdm.o
# Blackfin Machine Support
+snd-ad1836-objs := bf5xx-ad1836.o
snd-ad1980-objs := bf5xx-ad1980.o
snd-ssm2602-objs := bf5xx-ssm2602.o
snd-ad73311-objs := bf5xx-ad73311.o
snd-ad1938-objs := bf5xx-ad1938.o
+obj-$(CONFIG_SND_BF5XX_SOC_AD1836) += snd-ad1836.o
obj-$(CONFIG_SND_BF5XX_SOC_AD1980) += snd-ad1980.o
obj-$(CONFIG_SND_BF5XX_SOC_SSM2602) += snd-ssm2602.o
obj-$(CONFIG_SND_BF5XX_SOC_AD73311) += snd-ad73311.o
diff --git a/sound/soc/blackfin/bf5xx-ad1836.c b/sound/soc/blackfin/bf5xx-ad1836.c
new file mode 100644
index 00000000000..cd361e304b0
--- /dev/null
+++ b/sound/soc/blackfin/bf5xx-ad1836.c
@@ -0,0 +1,128 @@
+/*
+ * File: sound/soc/blackfin/bf5xx-ad1836.c
+ * Author: Barry Song <Barry.Song@analog.com>
+ *
+ * Created: Aug 4 2009
+ * Description: Board driver for ad1836 sound chip
+ *
+ * Bugs: Enter bugs at http://blackfin.uclinux.org/
+ *
+ * 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 <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/pcm_params.h>
+
+#include <asm/blackfin.h>
+#include <asm/cacheflush.h>
+#include <asm/irq.h>
+#include <asm/dma.h>
+#include <asm/portmux.h>
+
+#include "../codecs/ad1836.h"
+#include "bf5xx-sport.h"
+
+#include "bf5xx-tdm-pcm.h"
+#include "bf5xx-tdm.h"
+
+static struct snd_soc_card bf5xx_ad1836;
+
+static int bf5xx_ad1836_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+
+ cpu_dai->private_data = sport_handle;
+ return 0;
+}
+
+static int bf5xx_ad1836_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->dai->cpu_dai;
+ struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
+ int ret = 0;
+ /* set cpu DAI configuration */
+ ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
+ SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
+ if (ret < 0)
+ return ret;
+
+ /* set codec DAI configuration */
+ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_A |
+ SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static struct snd_soc_ops bf5xx_ad1836_ops = {
+ .startup = bf5xx_ad1836_startup,
+ .hw_params = bf5xx_ad1836_hw_params,
+};
+
+static struct snd_soc_dai_link bf5xx_ad1836_dai = {
+ .name = "ad1836",
+ .stream_name = "AD1836",
+ .cpu_dai = &bf5xx_tdm_dai,
+ .codec_dai = &ad1836_dai,
+ .ops = &bf5xx_ad1836_ops,
+};
+
+static struct snd_soc_card bf5xx_ad1836 = {
+ .name = "bf5xx_ad1836",
+ .platform = &bf5xx_tdm_soc_platform,
+ .dai_link = &bf5xx_ad1836_dai,
+ .num_links = 1,
+};
+
+static struct snd_soc_device bf5xx_ad1836_snd_devdata = {
+ .card = &bf5xx_ad1836,
+ .codec_dev = &soc_codec_dev_ad1836,
+};
+
+static struct platform_device *bfxx_ad1836_snd_device;
+
+static int __init bf5xx_ad1836_init(void)
+{
+ int ret;
+
+ bfxx_ad1836_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!bfxx_ad1836_snd_device)
+ return -ENOMEM;
+
+ platform_set_drvdata(bfxx_ad1836_snd_device, &bf5xx_ad1836_snd_devdata);
+ bf5xx_ad1836_snd_devdata.dev = &bfxx_ad1836_snd_device->dev;
+ ret = platform_device_add(bfxx_ad1836_snd_device);
+
+ if (ret)
+ platform_device_put(bfxx_ad1836_snd_device);
+
+ return ret;
+}
+
+static void __exit bf5xx_ad1836_exit(void)
+{
+ platform_device_unregister(bfxx_ad1836_snd_device);
+}
+
+module_init(bf5xx_ad1836_init);
+module_exit(bf5xx_ad1836_exit);
+
+/* Module information */
+MODULE_AUTHOR("Barry Song");
+MODULE_DESCRIPTION("ALSA SoC AD1836 board driver");
+MODULE_LICENSE("GPL");
+