summaryrefslogtreecommitdiffstats
path: root/sound/soc/kirkwood/kirkwood-openrd.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/kirkwood/kirkwood-openrd.c')
-rw-r--r--sound/soc/kirkwood/kirkwood-openrd.c126
1 files changed, 126 insertions, 0 deletions
diff --git a/sound/soc/kirkwood/kirkwood-openrd.c b/sound/soc/kirkwood/kirkwood-openrd.c
new file mode 100644
index 000000000000..0353d06bc41a
--- /dev/null
+++ b/sound/soc/kirkwood/kirkwood-openrd.c
@@ -0,0 +1,126 @@
+/*
+ * kirkwood-openrd.c
+ *
+ * (c) 2010 Arnaud Patard <apatard@mandriva.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/module.h>
+#include <linux/moduleparam.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <sound/soc.h>
+#include <mach/kirkwood.h>
+#include <plat/audio.h>
+#include <asm/mach-types.h>
+#include "kirkwood-i2s.h"
+#include "kirkwood-dma.h"
+#include "../codecs/cs42l51.h"
+
+static int openrd_client_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;
+ unsigned int freq, fmt;
+
+ fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS;
+ ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_dai_set_fmt(codec_dai, fmt);
+ if (ret < 0)
+ return ret;
+
+ switch (params_rate(params)) {
+ default:
+ case 44100:
+ freq = 11289600;
+ break;
+ case 48000:
+ freq = 12288000;
+ break;
+ case 96000:
+ freq = 24576000;
+ break;
+ }
+
+ return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN);
+
+}
+
+static struct snd_soc_ops openrd_client_ops = {
+ .hw_params = openrd_client_hw_params,
+};
+
+
+static struct snd_soc_dai_link openrd_client_dai[] = {
+{
+ .name = "CS42L51",
+ .stream_name = "CS42L51 HiFi",
+ .cpu_dai = &kirkwood_i2s_dai,
+ .codec_dai = &cs42l51_dai,
+ .ops = &openrd_client_ops,
+},
+};
+
+
+static struct snd_soc_card openrd_client = {
+ .name = "OpenRD Client",
+ .platform = &kirkwood_soc_platform,
+ .dai_link = openrd_client_dai,
+ .num_links = ARRAY_SIZE(openrd_client_dai),
+};
+
+static struct snd_soc_device openrd_client_snd_devdata = {
+ .card = &openrd_client,
+ .codec_dev = &soc_codec_device_cs42l51,
+};
+
+static struct platform_device *openrd_client_snd_device;
+
+static int __init openrd_client_init(void)
+{
+ int ret;
+
+ if (!machine_is_openrd_client())
+ return 0;
+
+ openrd_client_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!openrd_client_snd_device)
+ return -ENOMEM;
+
+ platform_set_drvdata(openrd_client_snd_device,
+ &openrd_client_snd_devdata);
+ openrd_client_snd_devdata.dev = &openrd_client_snd_device->dev;
+
+ ret = platform_device_add(openrd_client_snd_device);
+ if (ret) {
+ printk(KERN_ERR "%s: platform_device_add failed\n", __func__);
+ platform_device_put(openrd_client_snd_device);
+ }
+
+ return ret;
+}
+
+static void __exit openrd_client_exit(void)
+{
+ platform_device_unregister(openrd_client_snd_device);
+}
+
+module_init(openrd_client_init);
+module_exit(openrd_client_exit);
+
+/* Module information */
+MODULE_AUTHOR("Arnaud Patard <apatard@mandriva.com>");
+MODULE_DESCRIPTION("ALSA SoC OpenRD Client");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:soc-audio");