1 files changed, 142 insertions, 0 deletions

diff --git a/sound/soc/blackfin/bf5xx-ad1938.c b/sound/soc/blackfin/bf5xx-ad1938.c
new file mode 100644
index 000000000000..08269e91810c
--- /dev/null
+++ b/sound/soc/blackfin/bf5xx-ad1938.c
@@ -0,0 +1,142 @@
+/*
+ * File:         sound/soc/blackfin/bf5xx-ad1938.c
+ * Author:       Barry Song <Barry.Song@analog.com>
+ *
+ * Created:      Thur June 4 2009
+ * Description:  Board driver for ad1938 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.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#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/ad1938.h"
+#include "bf5xx-sport.h"
+
+#include "bf5xx-tdm-pcm.h"
+#include "bf5xx-tdm.h"
+
+static struct snd_soc_card bf5xx_ad1938;
+
+static int bf5xx_ad1938_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_ad1938_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;
+
+        /* set codec DAI slots, 8 channels, all channels are enabled */
+        ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xFF, 8);
+        if (ret < 0)
+                return ret;
+
+        return 0;
+}
+
+static struct snd_soc_ops bf5xx_ad1938_ops = {
+        .startup = bf5xx_ad1938_startup,
+        .hw_params = bf5xx_ad1938_hw_params,
+};
+
+static struct snd_soc_dai_link bf5xx_ad1938_dai = {
+        .name = "ad1938",
+        .stream_name = "AD1938",
+        .cpu_dai = &bf5xx_tdm_dai,
+        .codec_dai = &ad1938_dai,
+        .ops = &bf5xx_ad1938_ops,
+};
+
+static struct snd_soc_card bf5xx_ad1938 = {
+        .name = "bf5xx_ad1938",
+        .platform = &bf5xx_tdm_soc_platform,
+        .dai_link = &bf5xx_ad1938_dai,
+        .num_links = 1,
+};
+
+static struct snd_soc_device bf5xx_ad1938_snd_devdata = {
+        .card = &bf5xx_ad1938,
+        .codec_dev = &soc_codec_dev_ad1938,
+};
+
+static struct platform_device *bfxx_ad1938_snd_device;
+
+static int __init bf5xx_ad1938_init(void)
+{
+        int ret;
+
+        bfxx_ad1938_snd_device = platform_device_alloc("soc-audio", -1);
+        if (!bfxx_ad1938_snd_device)
+                return -ENOMEM;
+
+        platform_set_drvdata(bfxx_ad1938_snd_device, &bf5xx_ad1938_snd_devdata);
+        bf5xx_ad1938_snd_devdata.dev = &bfxx_ad1938_snd_device->dev;
+        ret = platform_device_add(bfxx_ad1938_snd_device);
+
+        if (ret)
+                platform_device_put(bfxx_ad1938_snd_device);
+
+        return ret;
+}
+
+static void __exit bf5xx_ad1938_exit(void)
+{
+        platform_device_unregister(bfxx_ad1938_snd_device);
+}
+
+module_init(bf5xx_ad1938_init);
+module_exit(bf5xx_ad1938_exit);
+
+/* Module information */
+MODULE_AUTHOR("Barry Song");
+MODULE_DESCRIPTION("ALSA SoC AD1938 board driver");
+MODULE_LICENSE("GPL");
+