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ASoC: Implement new DC servo readback mode for late WM8994 revisions

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Later WM8994 devices implement a new DC servo readback mode with the
register used to access the offset moved to register 0x59. Implement
support for this and enable it on the appropriate devices.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
This commit is contained in:
Mark Brown
2011-08-01 13:02:17 +09:00
parent 25032c119e
commit 79ef0abcd8
3 changed files with 18 additions and 5 deletions
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include/linux/mfd/wm8994/registers.h
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@@ -72,6 +72,7 @@
#define WM8994_DC_SERVO_2 0x55
#define WM8994_DC_SERVO_4 0x57
#define WM8994_DC_SERVO_READBACK 0x58
#define WM8994_DC_SERVO_4E 0x59
#define WM8994_ANALOGUE_HP_1 0x60
#define WM8958_MIC_DETECT_1 0xD0
#define WM8958_MIC_DETECT_2 0xD1