207 lines
5.9 KiB
Diff
207 lines
5.9 KiB
Diff
From c1dad0b6b434300ae64c902d11611c54c513ea10 Mon Sep 17 00:00:00 2001
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From: Anuj Aggarwal <anuj.aggarwal@ti.com>
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Date: Fri, 21 Nov 2008 17:41:03 +0530
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Subject: [PATCH] ASoC: Add support for OMAP3 EVM
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This patch adds ALSA SoC support for OMAP3 EVM using TWL4030 audio codec.
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Signed-off-by: Anuj Aggarwal <anuj.aggarwal@ti.com>
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---
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sound/soc/omap/Kconfig | 8 +++
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sound/soc/omap/Makefile | 3 +-
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sound/soc/omap/omap3evm.c | 147 +++++++++++++++++++++++++++++++++++++++++++++
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3 files changed, 157 insertions(+), 1 deletions(-)
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create mode 100644 sound/soc/omap/omap3evm.c
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diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
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index 0daeee4..deb6ba9 100644
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--- a/sound/soc/omap/Kconfig
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+++ b/sound/soc/omap/Kconfig
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@@ -22,6 +22,14 @@ config SND_OMAP_SOC_OMAP3_BEAGLE
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help
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Say Y if you want to add support for SoC audio on the Beagleboard.
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+config SND_OMAP_SOC_OMAP3EVM
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+ tristate "SoC Audio support for OMAP3EVM board"
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+ depends on SND_OMAP_SOC && MACH_OMAP3EVM
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+ select SND_OMAP_SOC_MCBSP
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+ select SND_SOC_TWL4030
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+ help
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+ Say Y if you want to add support for SoC audio on the omap3evm board.
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+
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config SND_OMAP_SOC_OSK5912
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tristate "SoC Audio support for omap osk5912"
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depends on SND_OMAP_SOC && MACH_OMAP_OSK
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diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile
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index 4bae404..ef31c25 100644
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--- a/sound/soc/omap/Makefile
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+++ b/sound/soc/omap/Makefile
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@@ -10,9 +10,10 @@ snd-soc-n810-objs := n810.o
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snd-soc-omap3beagle-objs := omap3beagle.o
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snd-soc-osk5912-objs := osk5912.o
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snd-soc-overo-objs := overo.o
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+snd-soc-omap3evm-objs := omap3evm.o
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obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o
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obj-$(CONFIG_SND_OMAP_SOC_OMAP3_BEAGLE) += snd-soc-omap3beagle.o
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obj-$(CONFIG_SND_OMAP_SOC_OSK5912) += snd-soc-osk5912.o
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obj-$(CONFIG_SND_OMAP_SOC_OVERO) += snd-soc-overo.o
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-
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+obj-$(CONFIG_MACH_OMAP3EVM) += snd-soc-omap3evm.o
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diff --git a/sound/soc/omap/omap3evm.c b/sound/soc/omap/omap3evm.c
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new file mode 100644
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index 0000000..570af55
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--- /dev/null
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+++ b/sound/soc/omap/omap3evm.c
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@@ -0,0 +1,147 @@
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+/*
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+ * omap3evm.c -- ALSA SoC support for OMAP3 EVM
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+ *
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+ * Author: Anuj Aggarwal <anuj.aggarwal@ti.com>
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+ *
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+ * Based on sound/soc/omap/beagle.c by Steve Sakoman
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+ *
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+ * Copyright (C) 2008 Texas Instruments, Incorporated
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License as published by the
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+ * Free Software Foundation version 2.
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+ *
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+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
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+ * whether express or implied; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * General Public License for more details.
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+ */
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+
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+#include <linux/clk.h>
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+#include <linux/platform_device.h>
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+#include <sound/core.h>
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+#include <sound/pcm.h>
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+#include <sound/soc.h>
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+#include <sound/soc-dapm.h>
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+
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+#include <asm/mach-types.h>
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+#include <mach/hardware.h>
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+#include <mach/gpio.h>
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+#include <mach/mcbsp.h>
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+
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+#include "omap-mcbsp.h"
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+#include "omap-pcm.h"
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+#include "../codecs/twl4030.h"
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+
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+static int omap3evm_hw_params(struct snd_pcm_substream *substream,
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+ struct snd_pcm_hw_params *params)
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+{
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+ struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
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+ struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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+ int ret;
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+
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+ /* Set codec DAI configuration */
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+ ret = snd_soc_dai_set_fmt(codec_dai,
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+ SND_SOC_DAIFMT_I2S |
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+ SND_SOC_DAIFMT_NB_NF |
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+ SND_SOC_DAIFMT_CBM_CFM);
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+ if (ret < 0) {
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+ printk(KERN_ERR "can't set codec DAI configuration\n");
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+ return ret;
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+ }
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+
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+ /* Set cpu DAI configuration */
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+ ret = snd_soc_dai_set_fmt(cpu_dai,
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+ SND_SOC_DAIFMT_I2S |
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+ SND_SOC_DAIFMT_NB_NF |
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+ SND_SOC_DAIFMT_CBM_CFM);
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+ if (ret < 0) {
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+ printk(KERN_ERR "can't set cpu DAI configuration\n");
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+ return ret;
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+ }
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+
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+ /* Set the codec system clock for DAC and ADC */
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+ ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
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+ SND_SOC_CLOCK_IN);
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+ if (ret < 0) {
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+ printk(KERN_ERR "can't set codec system clock\n");
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+ return ret;
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+ }
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+
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+ return 0;
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+}
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+
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+static struct snd_soc_ops omap3evm_ops = {
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+ .hw_params = omap3evm_hw_params,
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+};
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+
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+/* Digital audio interface glue - connects codec <--> CPU */
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+static struct snd_soc_dai_link omap3evm_dai = {
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+ .name = "TWL4030",
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+ .stream_name = "TWL4030",
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+ .cpu_dai = &omap_mcbsp_dai[0],
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+ .codec_dai = &twl4030_dai,
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+ .ops = &omap3evm_ops,
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+};
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+
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+/* Audio machine driver */
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+static struct snd_soc_machine snd_soc_machine_omap3evm = {
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+ .name = "omap3evm",
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+ .dai_link = &omap3evm_dai,
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+ .num_links = 1,
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+};
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+
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+/* Audio subsystem */
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+static struct snd_soc_device omap3evm_snd_devdata = {
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+ .machine = &snd_soc_machine_omap3evm,
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+ .platform = &omap_soc_platform,
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+ .codec_dev = &soc_codec_dev_twl4030,
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+};
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+
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+static struct platform_device *omap3evm_snd_device;
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+
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+static int __init omap3evm_soc_init(void)
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+{
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+ int ret;
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+
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+ if (!machine_is_omap3evm()) {
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+ pr_debug("Not OMAP3 EVM!\n");
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+ return -ENODEV;
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+ }
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+ pr_info("OMAP3 EVM SoC init\n");
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+
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+ omap3evm_snd_device = platform_device_alloc("soc-audio", -1);
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+ if (!omap3evm_snd_device) {
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+ printk(KERN_ERR "Platform device allocation failed\n");
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+ return -ENOMEM;
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+ }
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+
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+ platform_set_drvdata(omap3evm_snd_device, &omap3evm_snd_devdata);
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+ omap3evm_snd_devdata.dev = &omap3evm_snd_device->dev;
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+ *(unsigned int *)omap3evm_dai.cpu_dai->private_data = 1; /* McBSP2 */
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+
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+ ret = platform_device_add(omap3evm_snd_device);
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+ if (ret)
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+ goto err1;
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+
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+ return 0;
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+
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+err1:
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+ printk(KERN_ERR "Unable to add platform device\n");
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+ platform_device_put(omap3evm_snd_device);
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+
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+ return ret;
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+}
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+
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+static void __exit omap3evm_soc_exit(void)
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+{
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+ platform_device_unregister(omap3evm_snd_device);
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+}
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+
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+module_init(omap3evm_soc_init);
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+module_exit(omap3evm_soc_exit);
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+
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+MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>");
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+MODULE_DESCRIPTION("ALSA SoC OMAP3 EVM");
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+MODULE_LICENSE("GPL");
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--
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1.5.6.5
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