[alsa-devel] [PATCH 4/4] Add ASoC support for DEVKIT8000
Kim Botherway
kbotherway at djdvant.com
Thu Nov 12 11:24:43 CET 2009
This patch add support for DEVKIT8000, it is a copy of Beagleboard sound
driver
diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index 653a362..8cdcfe9 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -91,6 +91,14 @@ config SND_OMAP_SOC_OMAP3_BEAGLE
help
Say Y if you want to add support for SoC audio on the Beagleboard.
+config SND_OMAP_SOC_OMAP3_DEVKIT8000
+ tristate "SoC Audio support for OMAP3 DEVKIT8000"
+ depends on TWL4030_CORE && SND_OMAP_SOC && MACH_OMAP3_DEVKIT8000
+ select SND_OMAP_SOC_MCBSP
+ select SND_SOC_TWL4030
+ help
+ Say Y if you want to add support for SoC audio on the
DEVKIT8000.
+
config SND_OMAP_SOC_ZOOM2
tristate "SoC Audio support for Zoom2"
depends on TWL4030_CORE && SND_OMAP_SOC && MACH_OMAP_ZOOM2
diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile
index 02d6947..7239737 100644
--- a/sound/soc/omap/Makefile
+++ b/sound/soc/omap/Makefile
@@ -15,6 +15,7 @@ snd-soc-omap3evm-objs := omap3evm.o
snd-soc-sdp3430-objs := sdp3430.o
snd-soc-omap3pandora-objs := omap3pandora.o
snd-soc-omap3beagle-objs := omap3beagle.o
+snd-soc-omap3devkit8000-objs := omap3devkit8000.o
snd-soc-zoom2-objs := zoom2.o
obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o
@@ -26,4 +27,5 @@ obj-$(CONFIG_MACH_OMAP3EVM) += snd-soc-omap3evm.o
obj-$(CONFIG_SND_OMAP_SOC_SDP3430) += snd-soc-sdp3430.o
obj-$(CONFIG_SND_OMAP_SOC_OMAP3_PANDORA) += snd-soc-omap3pandora.o
obj-$(CONFIG_SND_OMAP_SOC_OMAP3_BEAGLE) += snd-soc-omap3beagle.o
+obj-$(CONFIG_SND_OMAP_SOC_OMAP3_DEVKIT8000) += snd-soc-omap3devkit8000.o
obj-$(CONFIG_SND_OMAP_SOC_ZOOM2) += snd-soc-zoom2.o
diff --git a/sound/soc/omap/omap3devkit8000.c
b/sound/soc/omap/omap3devkit8000.c
new file mode 100644
index 0000000..6a975d4
--- /dev/null
+++ b/sound/soc/omap/omap3devkit8000.c
@@ -0,0 +1,154 @@
+/*
+ * omap3devkit8000.c -- SoC audio for OMAP3 Beagle
+ *
+ * Author: Steve Sakoman <steve at 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 <plat/hardware.h>
+#include <plat/gpio.h>
+#include <plat/mcbsp.h>
+
+#include "omap-mcbsp.h"
+#include "omap-pcm.h"
+#include "../codecs/twl4030.h"
+
+static int omap3devkit8000_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;
+ unsigned int fmt;
+ int ret;
+
+ switch (params_channels(params)) {
+ case 2: /* Stereo I2S mode */
+ fmt = SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM;
+ break;
+ case 4: /* Four channel TDM mode */
+ fmt = SND_SOC_DAIFMT_DSP_A |
+ SND_SOC_DAIFMT_IB_NF |
+ SND_SOC_DAIFMT_CBM_CFM;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Set codec DAI configuration */
+ ret = snd_soc_dai_set_fmt(codec_dai, fmt);
+ 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, fmt);
+ 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 omap3devkit8000_ops = {
+ .hw_params = omap3devkit8000_hw_params,
+};
+
+/* Digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link omap3devkit8000_dai = {
+ .name = "TWL4030",
+ .stream_name = "TWL4030",
+ .cpu_dai = &omap_mcbsp_dai[0],
+ .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
+ .ops = &omap3devkit8000_ops,
+};
+
+/* Audio machine driver */
+static struct snd_soc_card snd_soc_omap3devkit8000 = {
+ .name = "omap3devkit8000",
+ .platform = &omap_soc_platform,
+ .dai_link = &omap3devkit8000_dai,
+ .num_links = 1,
+};
+
+/* Audio subsystem */
+static struct snd_soc_device omap3devkit8000_snd_devdata = {
+ .card = &snd_soc_omap3devkit8000,
+ .codec_dev = &soc_codec_dev_twl4030,
+};
+
+static struct platform_device *omap3devkit8000_snd_device;
+
+static int __init omap3devkit8000_soc_init(void)
+{
+ int ret;
+ pr_info("OMAP3 omap3devkit8000 SoC init\n");
+
+ omap3devkit8000_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!omap3devkit8000_snd_device) {
+ printk(KERN_ERR "Platform device allocation failed\n");
+ return -ENOMEM;
+ }
+
+ platform_set_drvdata(omap3devkit8000_snd_device,
&omap3devkit8000_snd_devdata);
+ omap3devkit8000_snd_devdata.dev = &omap3devkit8000_snd_device->dev;
+ *(unsigned int *)omap3devkit8000_dai.cpu_dai->private_data = 1; /* McBSP2
*/
+
+ ret = platform_device_add(omap3devkit8000_snd_device);
+ if (ret)
+ goto err1;
+
+ return 0;
+
+err1:
+ printk(KERN_ERR "Unable to add platform device\n");
+ platform_device_put(omap3devkit8000_snd_device);
+
+ return ret;
+}
+
+static void __exit omap3devkit8000_soc_exit(void)
+{
+ platform_device_unregister(omap3devkit8000_snd_device);
+}
+
+module_init(omap3devkit8000_soc_init);
+module_exit(omap3devkit8000_soc_exit);
+
+MODULE_AUTHOR("Steve Sakoman <steve at sakoman.com>");
+MODULE_DESCRIPTION("ALSA SoC OMAP3 DEVKIT8000");
+MODULE_LICENSE("GPL");
--
To unsubscribe from this list: send the line "unsubscribe alsa-devel" in
the body of a message to majordomo at vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
More information about the Alsa-devel
mailing list