1 files changed, 150 insertions, 0 deletions
diff --git a/sound/soc/rda/rda_soundcard.c b/sound/soc/rda/rda_soundcard.c
new file mode 100644
index 000000000000..1ce270d55870
--- /dev/null
+++ b/sound/soc/rda/rda_soundcard.c
@@ -0,0 +1,150 @@
+/*
+ * sound/soc/rda/soundcard_rdafpga.c
+ *
+ * Copyright (C) 2012 RDA.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+
+#include <asm/mach-types.h>
+#include <mach/hardware.h>
+#include <linux/gpio.h>
+#include <linux/module.h>
+
+#define CODEC_CLOCK 	12000000
+
+static int rda_soundcard_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->codec_dai;
+	int err = 0;
+
+	//printk(KERN_INFO ">>>> %s \n", __func__);
+
+	/* Set the codec system clock for DAC and ADC */
+	err =
+	    snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN);
+
+	if (err < 0) {
+		//printk(KERN_ERR "can't set codec system clock\n");
+		return err;
+	}
+
+	return err;
+}
+
+static struct snd_soc_ops rda_soundcard_dai_link_ops = {
+	.hw_params = rda_soundcard_hw_params,
+};
+
+static const struct snd_soc_dapm_route rda_soundcard_audio_map[] = {
+	{"Headphone Jack", NULL, "LHPOUT"},
+	{"Headphone Jack", NULL, "RHPOUT"},
+
+	{"LLINEIN", NULL, "Line In"},
+	{"RLINEIN", NULL, "Line In"},
+
+	{"MICIN", NULL, "Mic Jack"},
+};
+
+/* Digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link rda_soundcard_dai_link[] = {
+	// audio stream
+	{
+		.name = "rda-soundcard-dai-link-aud",	// machine dai link name
+		.stream_name = "rdaaud-stream",	// stream name
+
+		// cpu(soc)(platform) name - manage "data" and "audio ifc"
+		.platform_name = "rda-pcm",
+		// cpu dai - manage aif
+		// .cpu_dai_name = "rdaaud-platform-cpu-dai", 
+		.cpu_dai_name = "rda-aif",
+
+		// codec name
+		.codec_name = "rda-codec",
+		// codec dai name - in fact, there is no codec dai in rda
+		.codec_dai_name = "rda-codec-dai",
+
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+			SND_SOC_DAIFMT_CBS_CFS,
+		.ops = &rda_soundcard_dai_link_ops,
+	},
+	// voice stream
+	{
+		.name = "rda-soundcard-dai-link-voice",	// machine dai link name
+		.stream_name = "rdavoice-stream",	// stream name
+
+		// cpu(soc)(platform) name - comm with modem
+		.platform_name = "rda-voice-pcm",
+		// cpu dai - fake
+		.cpu_dai_name = "rda-voice-cpu-dai",
+
+		// codec name - fake
+		.codec_name = "rda-voice-codec",
+		// codec dai name - fake
+		.codec_dai_name = "rda-voice-codec-dai",
+
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+			SND_SOC_DAIFMT_CBS_CFS,
+		.ops = &rda_soundcard_dai_link_ops,
+	},
+};
+
+/* Audio machine driver */
+static struct snd_soc_card rda_soundcard = {
+	.name = "rda-soundcard",	// sound card name
+	.owner = THIS_MODULE,
+	.dai_link = &rda_soundcard_dai_link[0],
+	.num_links = ARRAY_SIZE(rda_soundcard_dai_link),
+
+	.dapm_widgets = NULL,
+	.num_dapm_widgets = 0,
+	.dapm_routes = NULL,
+	.num_dapm_routes = 0,
+};
+
+static struct platform_device *rda_snd_device;
+
+static int __init rda_soundcard_modinit(void)
+{
+	int err = 0;
+
+	rda_snd_device = platform_device_alloc("soc-audio", -1);
+
+	if (!rda_snd_device)
+		return -ENOMEM;
+
+	platform_set_drvdata(rda_snd_device, &rda_soundcard);
+
+	err = platform_device_add(rda_snd_device);
+	if (err)
+		platform_device_put(rda_snd_device);
+
+	return err;
+}
+
+static void __exit rda_soundcard_modexit(void)
+{
+	platform_device_unregister(rda_snd_device);
+}
+
+module_init(rda_soundcard_modinit);
+module_exit(rda_soundcard_modexit);
+
+MODULE_DESCRIPTION("ALSA SoC for RDA SoundCard");
+MODULE_AUTHOR("Xu Mingliang <mingliangxu@rdamicro.com>");
+MODULE_LICENSE("GPL");