[alsa-devel] [RFC PATCH v2 3/3] ep93xx i2s audio snapper cl15 support
Ryan Mallon
ryan at bluewatersys.com
Wed May 26 07:09:48 CEST 2010
Add support for i2s audio on Bluewater Systems Snapper CL15 module
Signed-off-by: Ryan Mallon <ryan at bluewatersys.com>
---
arch/arm/mach-ep93xx/snappercl15.c | 1 +
sound/soc/ep93xx/Kconfig | 9 ++
sound/soc/ep93xx/Makefile | 3 +
sound/soc/ep93xx/snappercl15.c | 143 ++++++++++++++++++++++++++++++++++++
4 files changed, 156 insertions(+), 0 deletions(-)
create mode 100644 sound/soc/ep93xx/snappercl15.c
diff --git a/arch/arm/mach-ep93xx/snappercl15.c b/arch/arm/mach-ep93xx/snappercl15.c
index 51134b0..d4ca5cc 100644
--- a/arch/arm/mach-ep93xx/snappercl15.c
+++ b/arch/arm/mach-ep93xx/snappercl15.c
@@ -157,6 +157,7 @@ static void __init snappercl15_init_machine(void)
ep93xx_register_i2c(&snappercl15_i2c_gpio_data, snappercl15_i2c_data,
ARRAY_SIZE(snappercl15_i2c_data));
ep93xx_register_fb(&snappercl15_fb_info);
+ ep93xx_register_i2s(EP93XX_SYSCON_DEVCFG_I2SONAC97);
platform_device_register(&snappercl15_nand_device);
}
diff --git a/sound/soc/ep93xx/Kconfig b/sound/soc/ep93xx/Kconfig
index ba66ac8..f617f56 100644
--- a/sound/soc/ep93xx/Kconfig
+++ b/sound/soc/ep93xx/Kconfig
@@ -7,3 +7,12 @@ config SND_EP93XX_SOC
config SND_EP93XX_SOC_I2S
tristate
+
+config SND_EP93XX_SOC_SNAPPERCL15
+ tristate "SoC Audio support for Bluewater Systems Snapper CL15 module"
+ depends on SND_EP93XX_SOC && MACH_SNAPPER_CL15
+ select SND_EP93XX_SOC_I2S
+ select SND_SOC_TLV320AIC23
+ help
+ Say Y or M here if you want to add support for I2S audio on the
+ Bluewater Systems Snapper CL15 module.
diff --git a/sound/soc/ep93xx/Makefile b/sound/soc/ep93xx/Makefile
index 0239da3..272e60f 100644
--- a/sound/soc/ep93xx/Makefile
+++ b/sound/soc/ep93xx/Makefile
@@ -6,3 +6,6 @@ obj-$(CONFIG_SND_EP93XX_SOC) += snd-soc-ep93xx.o
obj-$(CONFIG_SND_EP93XX_SOC_I2S) += snd-soc-ep93xx-i2s.o
# EP93XX Machine Support
+snd-soc-snappercl15-objs := snappercl15.o
+
+obj-$(CONFIG_SND_EP93XX_SOC_SNAPPERCL15) += snd-soc-snappercl15.o
diff --git a/sound/soc/ep93xx/snappercl15.c b/sound/soc/ep93xx/snappercl15.c
new file mode 100644
index 0000000..645a7fb
--- /dev/null
+++ b/sound/soc/ep93xx/snappercl15.c
@@ -0,0 +1,143 @@
+/*
+ * snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
+ *
+ * Copyright (C) 2008 Bluewater Systems Ltd
+ * Author: Ryan Mallon <ryan at bluewatersys.com>
+ *
+ * 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.
+ *
+ */
+
+#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 "../codecs/tlv320aic23.h"
+#include "ep93xx-pcm.h"
+#include "ep93xx-i2s.h"
+
+#define CODEC_CLOCK 5644800
+
+static int snappercl15_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 err;
+
+ err = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_IF |
+ SND_SOC_DAIFMT_CBS_CFS);
+
+ err = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_IF |
+ SND_SOC_DAIFMT_CBS_CFS);
+ if (err)
+ return err;
+
+ err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK,
+ SND_SOC_CLOCK_IN);
+ if (err)
+ return err;
+
+ err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK,
+ SND_SOC_CLOCK_OUT);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static struct snd_soc_ops snappercl15_ops = {
+ .hw_params = snappercl15_hw_params,
+};
+
+static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_LINE("Line In", NULL),
+ SND_SOC_DAPM_MIC("Mic Jack", NULL),
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+ {"Headphone Jack", NULL, "LHPOUT"},
+ {"Headphone Jack", NULL, "RHPOUT"},
+
+ {"LLINEIN", NULL, "Line In"},
+ {"RLINEIN", NULL, "Line In"},
+
+ {"MICIN", NULL, "Mic Jack"},
+};
+
+static int snappercl15_tlv320aic23_init(struct snd_soc_codec *codec)
+{
+ snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets,
+ ARRAY_SIZE(tlv320aic23_dapm_widgets));
+
+ snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+ return 0;
+}
+
+static struct snd_soc_dai_link snappercl15_dai = {
+ .name = "tlv320aic23",
+ .stream_name = "AIC23",
+ .cpu_dai = &ep93xx_i2s_dai,
+ .codec_dai = &tlv320aic23_dai,
+ .init = snappercl15_tlv320aic23_init,
+ .ops = &snappercl15_ops,
+};
+
+static struct snd_soc_card snd_soc_snappercl15 = {
+ .name = "Snapper CL15",
+ .platform = &ep93xx_soc_platform,
+ .dai_link = &snappercl15_dai,
+ .num_links = 1,
+};
+
+static struct snd_soc_device snappercl15_snd_devdata = {
+ .card = &snd_soc_snappercl15,
+ .codec_dev = &soc_codec_dev_tlv320aic23,
+};
+
+static struct platform_device *snappercl15_snd_device;
+
+static int __init snappercl15_init(void)
+{
+ int ret;
+
+ if (!machine_is_snapper_cl15())
+ return -ENODEV;
+
+ snappercl15_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!snappercl15_snd_device)
+ return -ENOMEM;
+
+ platform_set_drvdata(snappercl15_snd_device, &snappercl15_snd_devdata);
+ snappercl15_snd_devdata.dev = &snappercl15_snd_device->dev;
+ ret = platform_device_add(snappercl15_snd_device);
+ if (ret)
+ platform_device_put(snappercl15_snd_device);
+
+ return ret;
+}
+
+static void __exit snappercl15_exit(void)
+{
+ platform_device_unregister(snappercl15_snd_device);
+}
+
+module_init(snappercl15_init);
+module_exit(snappercl15_exit);
+
+MODULE_AUTHOR("Ryan Mallon <ryan at bluewatersys.com>");
+MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
+MODULE_LICENSE("GPL");
+
--
1.5.5.1
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