[ALSA] SH7760 ASoC support

ALSA ASoC support for SH7760
This patch adds ALSA ASoC drivers for the Audio interfaces
of the SH7760 SoC:
Add driver for the SH7760 DMA engine (dmabrg)
Add AC97 driver for HAC unit(s) found on SH7760/SH7780
Add I2S driver for SSI unit(s) found on SH7760/SH7780
Add a generic SH7760-AC97 machine driver.
Hook it all up with the build system.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 92 insertions, 0 deletions

diff --git a/sound/soc/sh/sh7760-ac97.c b/sound/soc/sh/sh7760-ac97.c
new file mode 100644
index 000000000000..5563f14511fa
--- /dev/null
+++ b/sound/soc/sh/sh7760-ac97.c
@@ -0,0 +1,92 @@
+/*
+ * Generic AC97 sound support for SH7760
+ *
+ * (c) 2007 Manuel Lauss
+ *
+ * Licensed under the GPLv2.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/platform_device.h>
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <asm/io.h>
+
+#include "../codecs/ac97.h"
+
+#define IPSEL 0xFE400034
+
+/* platform specific structs can be declared here */
+extern struct snd_soc_cpu_dai sh4_hac_dai[2];
+extern struct snd_soc_platform sh7760_soc_platform;
+
+static int machine_init(struct snd_soc_codec *codec)
+{
+        snd_soc_dapm_sync_endpoints(codec);
+        return 0;
+}
+
+static struct snd_soc_dai_link sh7760_ac97_dai = {
+        .name = "AC97",
+        .stream_name = "AC97 HiFi",
+        .cpu_dai = &sh4_hac_dai[0],     /* HAC0 */
+        .codec_dai = &ac97_dai,
+        .init = machine_init,
+        .ops = NULL,
+};
+
+static struct snd_soc_machine sh7760_ac97_soc_machine  = {
+        .name = "SH7760 AC97",
+        .dai_link = &sh7760_ac97_dai,
+        .num_links = 1,
+};
+
+static struct snd_soc_device sh7760_ac97_snd_devdata = {
+        .machine = &sh7760_ac97_soc_machine,
+        .platform = &sh7760_soc_platform,
+        .codec_dev = &soc_codec_dev_ac97,
+};
+
+static struct platform_device *sh7760_ac97_snd_device;
+
+static int __init sh7760_ac97_init(void)
+{
+        int ret;
+        unsigned short ipsel;
+
+        /* enable both AC97 controllers in pinmux reg */
+        ipsel = ctrl_inw(IPSEL);
+        ctrl_outw(ipsel | (3 << 10), IPSEL);
+
+        ret = -ENOMEM;
+        sh7760_ac97_snd_device = platform_device_alloc("soc-audio", -1);
+        if (!sh7760_ac97_snd_device)
+                goto out;
+
+        platform_set_drvdata(sh7760_ac97_snd_device,
+                             &sh7760_ac97_snd_devdata);
+        sh7760_ac97_snd_devdata.dev = &sh7760_ac97_snd_device->dev;
+        ret = platform_device_add(sh7760_ac97_snd_device);
+
+        if (ret)
+                platform_device_put(sh7760_ac97_snd_device);
+
+out:
+        return ret;
+}
+
+static void __exit sh7760_ac97_exit(void)
+{
+        platform_device_unregister(sh7760_ac97_snd_device);
+}
+
+module_init(sh7760_ac97_init);
+module_exit(sh7760_ac97_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Generic SH7760 AC97 sound machine");
+MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");