Input: wm97xx - refactor channel selection in poll_sample()

The current implementation of poll_sample() has the problem that one of
its arguments, the channel to be selected, differs from wm9713 to other
variants. This parameter gets passed to the (currently unused)
mach-specific functions pre_sample() and post_sample() which thus have
to deal with codec-specific differences. Refactor the routine so that
the argument to poll_sample() is generic for all codecs and do necessary
conversions only in the codec-specific driver. The outcome even uses
less code and removes the non-standard use of the PEN_DOWN bit to mark
the AUX-channels.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 4 insertions, 6 deletions

diff --git a/include/linux/wm97xx.h b/include/linux/wm97xx.h
index 10b9e614fccd..fd98bb968219 100644
--- a/include/linux/wm97xx.h
+++ b/include/linux/wm97xx.h
@@ -38,6 +38,10 @@
 #define WM97XX_ADCSEL_X         0x1000  /* x coord measurement */
 #define WM97XX_ADCSEL_Y         0x2000  /* y coord measurement */
 #define WM97XX_ADCSEL_PRES      0x3000  /* pressure measurement */
+#define WM97XX_AUX_ID1          0x4000
+#define WM97XX_AUX_ID2          0x5000
+#define WM97XX_AUX_ID3          0x6000
+#define WM97XX_AUX_ID4          0x7000
 #define WM97XX_ADCSEL_MASK      0x7000  /* ADC selection mask */
 #define WM97XX_COO              0x0800  /* enable coordinate mode */
 #define WM97XX_CTC              0x0400  /* enable continuous mode */
@@ -62,12 +66,6 @@
 #define WM97XX_RPR              0x2000  /* wake up on pen down */
 #define WM97XX_PEN_DOWN         0x8000  /* pen is down */
 
-#define WM97XX_AUX_ID1          0x8001
-#define WM97XX_AUX_ID2          0x8002
-#define WM97XX_AUX_ID3          0x8003
-#define WM97XX_AUX_ID4          0x8004
-
-
 /* WM9712 Bits */
 #define WM9712_45W              0x1000  /* set for 5-wire touchscreen */
 #define WM9712_PDEN             0x0800  /* measure only when pen down */