[alsa-devel] [PATCH 3/3] board driver to connect bf5xx with ad1938

[Barry Song]

Signed-off-by: Barry Song <21cnbao at gmail.com>
---
 sound/soc/blackfin/bf5xx-ad1938.c |  142 +++++++++++++++++++++++++++++++++++++
 1 files changed, 142 insertions(+), 0 deletions(-)
 create mode 100644 sound/soc/blackfin/bf5xx-ad1938.c

diff --git a/sound/soc/blackfin/bf5xx-ad1938.c b/sound/soc/blackfin/bf5xx-ad1938.c
new file mode 100644
index 0000000..76948eb
--- /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 at 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 */
+	ret = snd_soc_dai_set_tdm_slot(codec_dai, 0, 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");
+
-- 
1.5.6.3