ASoC: Add WM8350 AudioPlus codec driver

The WM8350 is an integrated audio and power management subsystem which
provides a single-chip solution for portable audio and multimedia systems.

The integrated audio CODEC provides all the necessary functions for
high-quality stereo recording and playback. Programmable on-chip
amplifiers allow for the direct connection of headphones and microphones
with a minimum of external components. A programmable low-noise bias
voltage is available to feed one or more electret microphones.
Additional audio features include programmable high-pass filter in the
ADC input path.

This driver was originally written by Liam Girdwood with further updates
from me.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 34 insertions, 4 deletions

diff --git a/include/linux/mfd/wm8350/audio.h b/include/linux/mfd/wm8350/audio.h
index 217bb22ebb8e..af95a1d2f3a1 100644
--- a/include/linux/mfd/wm8350/audio.h
+++ b/include/linux/mfd/wm8350/audio.h
@@ -1,7 +1,7 @@
 /*
  * audio.h  --  Audio Driver for Wolfson WM8350 PMIC
  *
- * Copyright 2007 Wolfson Microelectronics PLC
+ * Copyright 2007, 2008 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 as published by the
@@ -70,9 +70,9 @@
 #define WM8350_CODEC_ISEL_0_5                   3       /* x0.5 */
 
 #define WM8350_VMID_OFF                         0
-#define WM8350_VMID_500K                        1
-#define WM8350_VMID_100K                        2
-#define WM8350_VMID_10K                         3
+#define WM8350_VMID_300K                        1
+#define WM8350_VMID_50K                         2
+#define WM8350_VMID_5K                          3
 
 /*
  * R40 (0x28) - Clock Control 1
@@ -591,8 +591,38 @@
 #define WM8350_IRQ_CODEC_MICSCD                 41
 #define WM8350_IRQ_CODEC_MICD                   42
 
+/*
+ * WM8350 Platform data.
+ *
+ * This must be initialised per platform for best audio performance.
+ * Please see WM8350 datasheet for information.
+ */
+struct wm8350_audio_platform_data {
+        int vmid_discharge_msecs;       /* VMID --> OFF discharge time */
+        int drain_msecs;        /* OFF drain time */
+        int cap_discharge_msecs;        /* Cap ON (from OFF) discharge time */
+        int vmid_charge_msecs;  /* vmid power up time */
+        u32 vmid_s_curve:2;     /* vmid enable s curve speed */
+        u32 dis_out4:2;         /* out4 discharge speed */
+        u32 dis_out3:2;         /* out3 discharge speed */
+        u32 dis_out2:2;         /* out2 discharge speed */
+        u32 dis_out1:2;         /* out1 discharge speed */
+        u32 vroi_out4:1;        /* out4 tie off */
+        u32 vroi_out3:1;        /* out3 tie off */
+        u32 vroi_out2:1;        /* out2 tie off */
+        u32 vroi_out1:1;        /* out1 tie off */
+        u32 vroi_enable:1;      /* enable tie off */
+        u32 codec_current_on:2; /* current level ON */
+        u32 codec_current_standby:2;    /* current level STANDBY */
+        u32 codec_current_charge:2;     /* codec current @ vmid charge */
+};
+
+struct snd_soc_codec;
+
 struct wm8350_codec {
         struct platform_device *pdev;
+        struct snd_soc_codec *codec;
+        struct wm8350_audio_platform_data *platform_data;
 };
 
 #endif