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From: Felipe Contreras <felipe.contreras@gmail.com>
To: linux-omap@vger.kernel.org
Cc: Felipe Contreras <felipe.contreras@gmail.com>
Subject: [PATCH] alsa: add Beagleboard SoC configuration.
This is exactly the same as the overo configuration. It might make sense
to have them in a single one.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
---
This was suggested by Koen Kooi.
sound/soc/omap/Kconfig | 8 ++
sound/soc/omap/Makefile | 2 +
sound/soc/omap/omap3beagle.c | 149 ++++++++++++++++++++++++++++++++++++++++++
3 files changed, 159 insertions(+), 0 deletions(-)
create mode 100644 sound/soc/omap/omap3beagle.c
diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index d7b8939..ebad024 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -22,3 +22,11 @@ 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_OMAP3_BEAGLE
+ tristate "SoC Audio support for OMAP3 Beagle"
+ depends on SND_OMAP_SOC && MACH_OMAP3_BEAGLE
+ select SND_OMAP_SOC_MCBSP
+ select SND_SOC_TWL4030
+ help
+ Say Y if you want to add support for SoC audio on the Beagleboard.
+
diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile
index b96b97b..09fd0bb 100644
--- a/sound/soc/omap/Makefile
+++ b/sound/soc/omap/Makefile
@@ -8,7 +8,9 @@ obj-$(CONFIG_SND_OMAP_SOC_MCBSP) += snd-soc-omap-mcbsp.o
# OMAP Machine Support
snd-soc-n810-objs := n810.o
snd-soc-overo-objs := overo.o
+snd-soc-omap3beagle-objs := omap3beagle.o
obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o
obj-$(CONFIG_SND_OMAP_SOC_OVERO) += snd-soc-overo.o
+obj-$(CONFIG_SND_OMAP_SOC_OMAP3_BEAGLE) += snd-soc-omap3beagle.o
diff --git a/sound/soc/omap/omap3beagle.c b/sound/soc/omap/omap3beagle.c
new file mode 100644
index 0000000..1d0e398
--- /dev/null
+++ b/sound/soc/omap/omap3beagle.c
@@ -0,0 +1,149 @@
+/*
+ * omap3beagle.c -- SoC audio for OMAP3 Beagle
+ *
+ * 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 omap3beagle_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 omap3beagle_ops = {
+ .hw_params = omap3beagle_hw_params,
+};
+
+/* Digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link omap3beagle_dai = {
+ .name = "TWL4030",
+ .stream_name = "TWL4030",
+ .cpu_dai = &omap_mcbsp_dai[0],
+ .codec_dai = &twl4030_dai,
+ .ops = &omap3beagle_ops,
+};
+
+/* Audio machine driver */
+static struct snd_soc_machine snd_soc_machine_omap3beagle = {
+ .name = "omap3beagle",
+ .dai_link = &omap3beagle_dai,
+ .num_links = 1,
+};
+
+/* Audio subsystem */
+static struct snd_soc_device omap3beagle_snd_devdata = {
+ .machine = &snd_soc_machine_omap3beagle,
+ .platform = &omap_soc_platform,
+ .codec_dev = &soc_codec_dev_twl4030,
+};
+
+static struct platform_device *omap3beagle_snd_device;
+
+static int __init omap3beagle_soc_init(void)
+{
+ int ret;
+
+ printk(KERN_INFO "OMAP3 Beagle SoC init\n");
+ if (!machine_is_omap3_beagle()) {
+ printk(KERN_ERR "Not OMAP3 Beagle!\n");
+ return -ENODEV;
+ }
+
+ omap3beagle_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!omap3beagle_snd_device) {
+ printk(KERN_ERR "Platform device allocation failed\n");
+ return -ENOMEM;
+ }
+
+ platform_set_drvdata(omap3beagle_snd_device, &omap3beagle_snd_devdata);
+ omap3beagle_snd_devdata.dev = &omap3beagle_snd_device->dev;
+ *(unsigned int *)omap3beagle_dai.cpu_dai->private_data = 1; /* McBSP2 */
+
+ ret = platform_device_add(omap3beagle_snd_device);
+ if (ret)
+ goto err1;
+
+ return 0;
+
+err1:
+ printk(KERN_ERR "Unable to add platform device\n");
+ platform_device_put(omap3beagle_snd_device);
+
+ return ret;
+}
+
+static void __exit omap3beagle_soc_exit(void)
+{
+ platform_device_unregister(omap3beagle_snd_device);
+}
+
+module_init(omap3beagle_soc_init);
+module_exit(omap3beagle_soc_exit);
+
+MODULE_AUTHOR("Steve Sakoman <steve@sakoman.com>");
+MODULE_DESCRIPTION("ALSA SoC OMAP3 Beagle");
+MODULE_LICENSE("GPL");
--
1.6.0.1
--
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