ASoC: Add WM8915 CODEC driver

The WM8915 is an ultra low power mobile CODEC designed for smartphones,
featuring a mixture of digital and analogue I/O with flexible mixing
options and advanced low power accessory detection functionality in a
compact package.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>

1 files changed, 55 insertions, 0 deletions

diff --git a/include/sound/wm8915.h b/include/sound/wm8915.h
new file mode 100644
index 000000000000..5817d762f6f3
--- /dev/null
+++ b/include/sound/wm8915.h
@@ -0,0 +1,55 @@
+/*
+ * linux/sound/wm8915.h -- Platform data for WM8915
+ *
+ * Copyright 2011 Wolfson Microelectronics. PLC.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __LINUX_SND_WM8903_H
+#define __LINUX_SND_WM8903_H
+
+enum wm8915_inmode {
+        WM8915_DIFFERRENTIAL_1 = 0,   /* IN1xP - IN1xN */
+        WM8915_INVERTING = 1,         /* IN1xN */
+        WM8915_NON_INVERTING = 2,     /* IN1xP */
+        WM8915_DIFFERENTIAL_2 = 3,    /* IN2xP - IN2xP */
+};
+
+/**
+ * ReTune Mobile configurations are specified with a label, sample
+ * rate and set of values to write (the enable bits will be ignored).
+ *
+ * Configurations are expected to be generated using the ReTune Mobile
+ * control panel in WISCE - see http://www.wolfsonmicro.com/wisce/
+ */
+struct wm8915_retune_mobile_config {
+        const char *name;
+        int rate;
+        u16 regs[20];
+};
+
+#define WM8915_SET_DEFAULT 0x10000
+
+struct wm8915_pdata {
+        int irq_flags;  /** Set IRQ trigger flags; default active low */
+
+        int ldo_ena;  /** GPIO for LDO1; -1 for none */
+
+        int micdet_def;  /** Default MICDET_SRC/HP1FB_SRC/MICD_BIAS */
+
+        enum wm8915_inmode inl_mode;
+        enum wm8915_inmode inr_mode;
+
+        u32 spkmute_seq;  /** Value for register 0x802 */
+
+        int gpio_base;
+        u32 gpio_default[5];
+
+        int num_retune_mobile_cfgs;
+        struct wm8915_retune_mobile_config *retune_mobile_cfgs;
+};
+
+#endif