ASoC: max9768: add driver for max9768 amplifier

Add a driver supporting the volume control and the mute pin. Shdn pin
and DAPM are not taken care of yet.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/include/sound/max9768.h b/include/sound/max9768.h
new file mode 100644
index 00000000000..0f78b41d030
--- /dev/null
+++ b/include/sound/max9768.h
@@ -0,0 +1,24 @@
+/*
+ * Platform data for MAX9768
+ * Copyright (C) 2011, 2012 by Wolfram Sang, Pengutronix e.K.
+ * same licence as the driver
+ */
+
+#ifndef __SOUND_MAX9768_PDATA_H__
+#define __SOUND_MAX9768_PDATA_H__
+
+/**
+ * struct max9768_pdata - optional platform specific MAX9768 configuration
+ * @shdn_gpio:  GPIO to SHDN pin. If not valid, pin must be hardwired HIGH
+ * @mute_gpio:  GPIO to MUTE pin. If not valid, control for mute won't be added
+ * @flags: configuration flags, e.g. set classic PWM mode (check datasheet
+ *         regarding "filterless modulation" which is default).
+ */
+struct max9768_pdata {
+        int shdn_gpio;
+        int mute_gpio;
+        unsigned flags;
+#define MAX9768_FLAG_CLASSIC_PWM        (1 << 0)
+};
+
+#endif /* __SOUND_MAX9768_PDATA_H__*/