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ASoC: Add WM8350 AudioPlus codec driver

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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>
This commit is contained in:
Mark Brown
2008-12-16 10:15:12 +00:00
parent b8b33cb560
commit 40aa4a30d0
5 changed files with 1643 additions and 4 deletions
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38
include/linux/mfd/wm8350/audio.h
View File

@@ -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