[PATCH] ALSA: SoC: Add support for TI SDP3430

[PATCH] ALSA: SoC: Add support for TI SDP3430

[mesak82]

From: Misael Lopez Cruz <mesak82@gmail.com>

This patch add ASoC support for TI SDP3430. It's based on Gumstix
Overo SoC code by Steve Sakoman.

Signed-off-by: Misael Lopez Cruz <mesak82@gmail.com>
---
 sound/soc/omap/Kconfig   |    7 ++
 sound/soc/omap/Makefile  |    2 +
 sound/soc/omap/sdp3430.c |  152 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 161 insertions(+), 0 deletions(-)
 create mode 100644 sound/soc/omap/sdp3430.c

diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index d7b8939..890b1ed 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -22,3 +22,10 @@ config SND_OMAP_SOC_OVERO
 	help
 	  Say Y if you want to add support for SoC audio on the Gumstix Overo.
 
+config SND_OMAP_SOC_SDP3430
+	tristate "SoC Audio support for Texas Instruments SDP3430"
+	depends on SND_OMAP_SOC && MACH_OMAP_3430SDP
+	select SND_OMAP_SOC_MCBSP
+	select SND_SOC_TWL4030
+	help
+	  Say Y if you want to add support for SoC audio on Texas Instruments SDP3430.
diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile
index b96b97b..c21426b 100644
--- a/sound/soc/omap/Makefile
+++ b/sound/soc/omap/Makefile
@@ -8,7 +8,9 @@ obj-$(CONFIG_SND_OMAP_SOC_MCBSP) += snd-soc-omap-mcbsp.o
 # OMAP Machine Support
 snd-soc-n810-objs := n810.o
 snd-soc-overo-objs := overo.o
+snd-soc-sdp3430-objs := sdp3430.o
 
 obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o
 obj-$(CONFIG_SND_OMAP_SOC_OVERO) += snd-soc-overo.o
+obj-$(CONFIG_SND_OMAP_SOC_SDP3430) += snd-soc-sdp3430.o
 
diff --git a/sound/soc/omap/sdp3430.c b/sound/soc/omap/sdp3430.c
new file mode 100644
index 0000000..84ad3f9
--- /dev/null
+++ b/sound/soc/omap/sdp3430.c
@@ -0,0 +1,152 @@
+/*
+ * sdp3430.c  --  SoC audio for TI OMAP3430 SDP
+ *
+ * Author: Misael Lopez Cruz <x0052729@ti.com>
+ *
+ * Based on:
+ * Author: Steve Sakoman <steve@sakoman.com>
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <asm/mach-types.h>
+#include <mach/hardware.h>
+#include <mach/gpio.h>
+#include <mach/mcbsp.h>
+
+#include "omap-mcbsp.h"
+#include "omap-pcm.h"
+#include "../codecs/twl4030.h"
+
+static int sdp3430_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->dai->codec_dai;
+	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+	int ret;
+
+	/* Set codec DAI configuration */
+	ret = snd_soc_dai_set_fmt(codec_dai,
+				  SND_SOC_DAIFMT_I2S |
+				  SND_SOC_DAIFMT_NB_NF |
+				  SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0) {
+		printk(KERN_ERR "can't set codec DAI configuration\n");
+		return ret;
+	}
+
+	/* Set cpu DAI configuration */
+	ret = snd_soc_dai_set_fmt(cpu_dai,
+				  SND_SOC_DAIFMT_I2S |
+				  SND_SOC_DAIFMT_NB_NF |
+				  SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0) {
+		printk(KERN_ERR "can't set cpu DAI configuration\n");
+		return ret;
+	}
+
+	/* Set the codec system clock for DAC and ADC */
+	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
+					    SND_SOC_CLOCK_IN);
+	if (ret < 0) {
+		printk(KERN_ERR "can't set codec system clock\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static struct snd_soc_ops sdp3430_ops = {
+	.hw_params = sdp3430_hw_params,
+};
+
+/* Digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link sdp3430_dai = {
+	.name = "TWL4030",
+	.stream_name = "TWL4030",
+	.cpu_dai = &omap_mcbsp_dai[0],
+	.codec_dai = &twl4030_dai,
+	.ops = &sdp3430_ops,
+};
+
+/* Audio machine driver */
+static struct snd_soc_machine snd_soc_machine_sdp3430 = {
+	.name = "SDP3430",
+	.dai_link = &sdp3430_dai,
+	.num_links = 1,
+};
+
+/* Audio subsystem */
+static struct snd_soc_device sdp3430_snd_devdata = {
+	.machine = &snd_soc_machine_sdp3430,
+	.platform = &omap_soc_platform,
+	.codec_dev = &soc_codec_dev_twl4030,
+};
+
+static struct platform_device *sdp3430_snd_device;
+
+static int __init sdp3430_soc_init(void)
+{
+	int ret;
+
+	if (!machine_is_omap_3430sdp()) {
+		pr_debug("Not SDP3430!\n");
+		return -ENODEV;
+	}
+	printk(KERN_INFO "SDP3430 SoC init\n");
+
+	sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
+	if (!sdp3430_snd_device) {
+		printk(KERN_ERR "Platform device allocation failed\n");
+		return -ENOMEM;
+	}
+
+	platform_set_drvdata(sdp3430_snd_device, &sdp3430_snd_devdata);
+	sdp3430_snd_devdata.dev = &sdp3430_snd_device->dev;
+	*(unsigned int *)sdp3430_dai.cpu_dai->private_data = 1; /* McBSP2 */
+
+	ret = platform_device_add(sdp3430_snd_device);
+	if (ret)
+		goto err1;
+
+	return 0;
+
+err1:
+	printk(KERN_ERR "Unable to add platform device\n");
+	platform_device_put(sdp3430_snd_device);
+
+	return ret;
+}
+module_init(sdp3430_soc_init);
+
+static void __exit sdp3430_soc_exit(void)
+{
+	platform_device_unregister(sdp3430_snd_device);
+}
+module_exit(sdp3430_soc_exit);
+
+MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
+MODULE_DESCRIPTION("ALSA SoC SDP3430");
+MODULE_LICENSE("GPL");
+
-- 
1.5.6.3

Re: [PATCH] ALSA: SoC: Add support for TI SDP3430

[David Brownell]

On Thursday 20 November 2008, mesak82@gmail.com wrote:
> +       tristate "SoC Audio support for Texas Instruments SDP3430"
> +       depends on SND_OMAP_SOC && MACH_OMAP_3430SDP
> +       select SND_OMAP_SOC_MCBSP
> +       select SND_SOC_TWL4030

depends also on TWL4030_CORE, yes?

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RE: [PATCH] ALSA: SoC: Add support for TI SDP3430

[Lopez Cruz, Misael]

> On Thursday 20 November 2008, mesak82@gmail.com wrote:
> > +       tristate "SoC Audio support for Texas Instruments SDP3430"
> > +       depends on SND_OMAP_SOC && MACH_OMAP_3430SDP
> > +       select SND_OMAP_SOC_MCBSP
> > +       select SND_SOC_TWL4030
> 
> depends also on TWL4030_CORE, yes?
The machine driver itself doesn't depend on TWL4030_CORE, but TWL4030 SoC codec driver does (sound/soc/codecs/Kconfig)

config SND_SOC_TWL4030
        tristate
        depends on TWL4030_CORE

Although that dependency is overridden by _select_ statement.

What should be the best way to handle this dependency? Directly in kconfig entry for each TWL4030-related machine driver?
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Re: [PATCH] ALSA: SoC: Add support for TI SDP3430

[David Brownell]

On Thursday 20 November 2008, Lopez Cruz, Misael wrote:
> > On Thursday 20 November 2008, mesak82@gmail.com wrote:
> > > +       tristate "SoC Audio support for Texas Instruments SDP3430"
> > > +       depends on SND_OMAP_SOC && MACH_OMAP_3430SDP
> > > +       select SND_OMAP_SOC_MCBSP
> > > +       select SND_SOC_TWL4030
> > 
> > depends also on TWL4030_CORE, yes?
> The machine driver itself doesn't depend on TWL4030_CORE, but
> TWL4030 SoC codec driver does (sound/soc/codecs/Kconfig) 
> 
> config SND_SOC_TWL4030
>         tristate
>         depends on TWL4030_CORE
> 
> Although that dependency is overridden by _select_ statement.

No it isn't.  Reverse dependencies don't work like you might
expect ... even when there's no ambiguity in walking up a
chain of them, *no* additional dependencies are flagged.

So as you've written it, SND_SOC_TWL4030 will be active,
but not TWL4030_CORE on which it depends.


If you fix that in Kconfig, you'd make a lot of folk
fairly happy ... but there'd be fun ambiguities to cope
with.  Example:

	config X
		select D
	config D
		depends on (A && B) || C

It's not clear whether to enable both A and B; just C;
or all of them...

Probably asking the user to resolve such issues would be
necessary.  Coming up with all the solutions would be a bit
more complex than a Prolog interpreter, since Kconfig uses
tristate logic not boolean.


> What should be the best way to handle this dependency? Directly
> in kconfig entry for each TWL4030-related machine driver? 

The least error-prone answer involves no "select" statements
at all, ever.  That is, least error-prone in terms of the
output of Kconfig being a valid configuration ... in terms
of minimizing user error, I suggest just adding the single
dependency I mentioned.

- Dave

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[PATCH] ALSA: SoC: Add support for TI SDP3430

[mesak82]

From: Misael Lopez Cruz <mesak82@gmail.com>

This patch add ASoC support for TI SDP3430. It's based on Gumstix
Overo SoC code by Steve Sakoman.

Signed-off-by: Misael Lopez Cruz <mesak82@gmail.com>
---
 sound/soc/omap/Kconfig   |    7 ++
 sound/soc/omap/Makefile  |    2 +
 sound/soc/omap/sdp3430.c |  152 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 161 insertions(+), 0 deletions(-)
 create mode 100644 sound/soc/omap/sdp3430.c

diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index 0daeee4..e816fa4 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -38,4 +38,11 @@ config SND_OMAP_SOC_OVERO
 	help
 	  Say Y if you want to add support for SoC audio on the Gumstix Overo.
 
+config SND_OMAP_SOC_SDP3430
+	tristate "SoC Audio support for Texas Instruments SDP3430"
+	depends on TWL4030_CORE && SND_OMAP_SOC && MACH_OMAP_3430SDP
+	select SND_OMAP_SOC_MCBSP
+	select SND_SOC_TWL4030
+	help
+	  Say Y if you want to add support for SoC audio on Texas Instruments SDP3430.
 
diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile
index 4bae404..64e560b 100644
--- a/sound/soc/omap/Makefile
+++ b/sound/soc/omap/Makefile
@@ -10,9 +10,11 @@ snd-soc-n810-objs := n810.o
 snd-soc-omap3beagle-objs := omap3beagle.o
 snd-soc-osk5912-objs := osk5912.o
 snd-soc-overo-objs := overo.o
+snd-soc-sdp3430-objs := sdp3430.o
 
 obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o
 obj-$(CONFIG_SND_OMAP_SOC_OMAP3_BEAGLE) += snd-soc-omap3beagle.o
 obj-$(CONFIG_SND_OMAP_SOC_OSK5912) += snd-soc-osk5912.o
 obj-$(CONFIG_SND_OMAP_SOC_OVERO) += snd-soc-overo.o
+obj-$(CONFIG_SND_OMAP_SOC_SDP3430) += snd-soc-sdp3430.o
 
diff --git a/sound/soc/omap/sdp3430.c b/sound/soc/omap/sdp3430.c
new file mode 100644
index 0000000..85fd160
--- /dev/null
+++ b/sound/soc/omap/sdp3430.c
@@ -0,0 +1,152 @@
+/*
+ * sdp3430.c  --  SoC audio for TI OMAP3430 SDP
+ *
+ * Author: Misael Lopez Cruz <x0052729@ti.com>
+ *
+ * Based on:
+ * Author: Steve Sakoman <steve@sakoman.com>
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <asm/mach-types.h>
+#include <mach/hardware.h>
+#include <mach/gpio.h>
+#include <mach/mcbsp.h>
+
+#include "omap-mcbsp.h"
+#include "omap-pcm.h"
+#include "../codecs/twl4030.h"
+
+static int sdp3430_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->dai->codec_dai;
+	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+	int ret;
+
+	/* Set codec DAI configuration */
+	ret = snd_soc_dai_set_fmt(codec_dai,
+				  SND_SOC_DAIFMT_I2S |
+				  SND_SOC_DAIFMT_NB_NF |
+				  SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0) {
+		printk(KERN_ERR "can't set codec DAI configuration\n");
+		return ret;
+	}
+
+	/* Set cpu DAI configuration */
+	ret = snd_soc_dai_set_fmt(cpu_dai,
+				  SND_SOC_DAIFMT_I2S |
+				  SND_SOC_DAIFMT_NB_NF |
+				  SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0) {
+		printk(KERN_ERR "can't set cpu DAI configuration\n");
+		return ret;
+	}
+
+	/* Set the codec system clock for DAC and ADC */
+	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
+					    SND_SOC_CLOCK_IN);
+	if (ret < 0) {
+		printk(KERN_ERR "can't set codec system clock\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static struct snd_soc_ops sdp3430_ops = {
+	.hw_params = sdp3430_hw_params,
+};
+
+/* Digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link sdp3430_dai = {
+	.name = "TWL4030",
+	.stream_name = "TWL4030",
+	.cpu_dai = &omap_mcbsp_dai[0],
+	.codec_dai = &twl4030_dai,
+	.ops = &sdp3430_ops,
+};
+
+/* Audio machine driver */
+static struct snd_soc_machine snd_soc_machine_sdp3430 = {
+	.name = "SDP3430",
+	.dai_link = &sdp3430_dai,
+	.num_links = 1,
+};
+
+/* Audio subsystem */
+static struct snd_soc_device sdp3430_snd_devdata = {
+	.machine = &snd_soc_machine_sdp3430,
+	.platform = &omap_soc_platform,
+	.codec_dev = &soc_codec_dev_twl4030,
+};
+
+static struct platform_device *sdp3430_snd_device;
+
+static int __init sdp3430_soc_init(void)
+{
+	int ret;
+
+	if (!machine_is_omap_3430sdp()) {
+		pr_debug("Not SDP3430!\n");
+		return -ENODEV;
+	}
+	printk(KERN_INFO "SDP3430 SoC init\n");
+
+	sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
+	if (!sdp3430_snd_device) {
+		printk(KERN_ERR "Platform device allocation failed\n");
+		return -ENOMEM;
+	}
+
+	platform_set_drvdata(sdp3430_snd_device, &sdp3430_snd_devdata);
+	sdp3430_snd_devdata.dev = &sdp3430_snd_device->dev;
+	*(unsigned int *)sdp3430_dai.cpu_dai->private_data = 1; /* McBSP2 */
+
+	ret = platform_device_add(sdp3430_snd_device);
+	if (ret)
+		goto err1;
+
+	return 0;
+
+err1:
+	printk(KERN_ERR "Unable to add platform device\n");
+	platform_device_put(sdp3430_snd_device);
+
+	return ret;
+}
+module_init(sdp3430_soc_init);
+
+static void __exit sdp3430_soc_exit(void)
+{
+	platform_device_unregister(sdp3430_snd_device);
+}
+module_exit(sdp3430_soc_exit);
+
+MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
+MODULE_DESCRIPTION("ALSA SoC SDP3430");
+MODULE_LICENSE("GPL");
+
-- 
1.5.6.3

Re: [PATCH] ALSA: SoC: Add support for TI SDP3430

[Misael Lopez]

2008/11/24  <mesak82@gmail.com>:
> From: Misael Lopez Cruz <mesak82@gmail.com>
>
> This patch add ASoC support for TI SDP3430. It's based on Gumstix
> Overo SoC code by Steve Sakoman.
>
> Signed-off-by: Misael Lopez Cruz <mesak82@gmail.com>
> ---

This patch version includes David's comment...

Re: [PATCH] ALSA: SoC: Add support for TI SDP3430

[David Brownell]

On Monday 24 November 2008, Misael Lopez wrote:
> 2008/11/24  <mesak82@gmail.com>:
> > From: Misael Lopez Cruz <mesak82@gmail.com>
> >
> > This patch add ASoC support for TI SDP3430. It's based on Gumstix
> > Overo SoC code by Steve Sakoman.
> >
> > Signed-off-by: Misael Lopez Cruz <mesak82@gmail.com>
> > ---
> 
> This patch version includes David's comment...

Good ... but, surely it should go to the ALSA list?

Re: [PATCH] ALSA: SoC: Add support for TI SDP3430

[Misael Lopez]

2008/11/24 David Brownell <david-b@pacbell.net>:
> On Monday 24 November 2008, Misael Lopez wrote:
>> 2008/11/24  <mesak82@gmail.com>:
>> > From: Misael Lopez Cruz <mesak82@gmail.com>
>> >
>> > This patch add ASoC support for TI SDP3430. It's based on Gumstix
>> > Overo SoC code by Steve Sakoman.
>> >
>> > Signed-off-by: Misael Lopez Cruz <mesak82@gmail.com>
>> > ---
>>
>> This patch version includes David's comment...
>
> Good ... but, surely it should go to the ALSA list?

Yes, thanks a lot for the comments. I'll send the patch to alsa list
and cc-ing linux-omap.

[PATCH] ALSA: SoC: Add support for TI SDP3430

[Misael Lopez Cruz]

This patch add ASoC support for TI SDP3430. It's based on Gumstix
Overo SoC code by Steve Sakoman.

Signed-off-by: Misael Lopez Cruz <mesak82@gmail.com>
---
 sound/soc/omap/Kconfig   |    7 ++
 sound/soc/omap/Makefile  |    2 +
 sound/soc/omap/sdp3430.c |  152 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 161 insertions(+), 0 deletions(-)
 create mode 100644 sound/soc/omap/sdp3430.c

diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index 0daeee4..e816fa4 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -38,4 +38,11 @@ config SND_OMAP_SOC_OVERO
 	help
 	  Say Y if you want to add support for SoC audio on the Gumstix Overo.
 
+config SND_OMAP_SOC_SDP3430
+	tristate "SoC Audio support for Texas Instruments SDP3430"
+	depends on TWL4030_CORE && SND_OMAP_SOC && MACH_OMAP_3430SDP
+	select SND_OMAP_SOC_MCBSP
+	select SND_SOC_TWL4030
+	help
+	  Say Y if you want to add support for SoC audio on Texas Instruments SDP3430.
 
diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile
index 4bae404..64e560b 100644
--- a/sound/soc/omap/Makefile
+++ b/sound/soc/omap/Makefile
@@ -10,9 +10,11 @@ snd-soc-n810-objs := n810.o
 snd-soc-omap3beagle-objs := omap3beagle.o
 snd-soc-osk5912-objs := osk5912.o
 snd-soc-overo-objs := overo.o
+snd-soc-sdp3430-objs := sdp3430.o
 
 obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o
 obj-$(CONFIG_SND_OMAP_SOC_OMAP3_BEAGLE) += snd-soc-omap3beagle.o
 obj-$(CONFIG_SND_OMAP_SOC_OSK5912) += snd-soc-osk5912.o
 obj-$(CONFIG_SND_OMAP_SOC_OVERO) += snd-soc-overo.o
+obj-$(CONFIG_SND_OMAP_SOC_SDP3430) += snd-soc-sdp3430.o
 
diff --git a/sound/soc/omap/sdp3430.c b/sound/soc/omap/sdp3430.c
new file mode 100644
index 0000000..85fd160
--- /dev/null
+++ b/sound/soc/omap/sdp3430.c
@@ -0,0 +1,152 @@
+/*
+ * sdp3430.c  --  SoC audio for TI OMAP3430 SDP
+ *
+ * Author: Misael Lopez Cruz <x0052729@ti.com>
+ *
+ * Based on:
+ * Author: Steve Sakoman <steve@sakoman.com>
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <asm/mach-types.h>
+#include <mach/hardware.h>
+#include <mach/gpio.h>
+#include <mach/mcbsp.h>
+
+#include "omap-mcbsp.h"
+#include "omap-pcm.h"
+#include "../codecs/twl4030.h"
+
+static int sdp3430_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->dai->codec_dai;
+	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+	int ret;
+
+	/* Set codec DAI configuration */
+	ret = snd_soc_dai_set_fmt(codec_dai,
+				  SND_SOC_DAIFMT_I2S |
+				  SND_SOC_DAIFMT_NB_NF |
+				  SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0) {
+		printk(KERN_ERR "can't set codec DAI configuration\n");
+		return ret;
+	}
+
+	/* Set cpu DAI configuration */
+	ret = snd_soc_dai_set_fmt(cpu_dai,
+				  SND_SOC_DAIFMT_I2S |
+				  SND_SOC_DAIFMT_NB_NF |
+				  SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0) {
+		printk(KERN_ERR "can't set cpu DAI configuration\n");
+		return ret;
+	}
+
+	/* Set the codec system clock for DAC and ADC */
+	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
+					    SND_SOC_CLOCK_IN);
+	if (ret < 0) {
+		printk(KERN_ERR "can't set codec system clock\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static struct snd_soc_ops sdp3430_ops = {
+	.hw_params = sdp3430_hw_params,
+};
+
+/* Digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link sdp3430_dai = {
+	.name = "TWL4030",
+	.stream_name = "TWL4030",
+	.cpu_dai = &omap_mcbsp_dai[0],
+	.codec_dai = &twl4030_dai,
+	.ops = &sdp3430_ops,
+};
+
+/* Audio machine driver */
+static struct snd_soc_machine snd_soc_machine_sdp3430 = {
+	.name = "SDP3430",
+	.dai_link = &sdp3430_dai,
+	.num_links = 1,
+};
+
+/* Audio subsystem */
+static struct snd_soc_device sdp3430_snd_devdata = {
+	.machine = &snd_soc_machine_sdp3430,
+	.platform = &omap_soc_platform,
+	.codec_dev = &soc_codec_dev_twl4030,
+};
+
+static struct platform_device *sdp3430_snd_device;
+
+static int __init sdp3430_soc_init(void)
+{
+	int ret;
+
+	if (!machine_is_omap_3430sdp()) {
+		pr_debug("Not SDP3430!\n");
+		return -ENODEV;
+	}
+	printk(KERN_INFO "SDP3430 SoC init\n");
+
+	sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
+	if (!sdp3430_snd_device) {
+		printk(KERN_ERR "Platform device allocation failed\n");
+		return -ENOMEM;
+	}
+
+	platform_set_drvdata(sdp3430_snd_device, &sdp3430_snd_devdata);
+	sdp3430_snd_devdata.dev = &sdp3430_snd_device->dev;
+	*(unsigned int *)sdp3430_dai.cpu_dai->private_data = 1; /* McBSP2 */
+
+	ret = platform_device_add(sdp3430_snd_device);
+	if (ret)
+		goto err1;
+
+	return 0;
+
+err1:
+	printk(KERN_ERR "Unable to add platform device\n");
+	platform_device_put(sdp3430_snd_device);
+
+	return ret;
+}
+module_init(sdp3430_soc_init);
+
+static void __exit sdp3430_soc_exit(void)
+{
+	platform_device_unregister(sdp3430_snd_device);
+}
+module_exit(sdp3430_soc_exit);
+
+MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
+MODULE_DESCRIPTION("ALSA SoC SDP3430");
+MODULE_LICENSE("GPL");
+
-- 
1.5.6.3