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[v4,4/8] Input: elantech - remove ETP_EDGE_FUZZ_V2

Message ID 1314606539-24722-5-git-send-email-jj_ding@emc.com.tw (mailing list archive)
State New, archived
Headers show

Commit Message

JJ Ding Aug. 29, 2011, 8:28 a.m. UTC 
Don't try to be too clever and remove ETP_EDGE_FUZZ_V2. X, Y ranges
should be just the raw resolution of the device. Otherwise, they can
cause underflow on the Y axis.

Suggested-by: Éric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: JJ Ding <jj_ding@emc.com.tw>
Acked-by: Daniel Kurtz <djkurtz@chromium.org>
---
 drivers/input/mouse/elantech.h |   15 ++++++---------
 1 files changed, 6 insertions(+), 9 deletions(-)
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Patch

diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h
index b54ea27..d9e6144 100644
--- a/drivers/input/mouse/elantech.h
+++ b/drivers/input/mouse/elantech.h
@@ -66,16 +66,13 @@ 
 #define ETP_YMAX_V1			(384 - ETP_EDGE_FUZZ_V1)
 
 /*
- * It seems the resolution for hardware version 2 doubled.
- * Hence the X and Y ranges are doubled too.
- * The bezel around the pad also appears to be smaller
+ * The resolution for older v2 hardware doubled.
+ * (newer v2's firmware provides command so we can query)
  */
-#define ETP_EDGE_FUZZ_V2		8
-
-#define ETP_XMIN_V2			(   0 + ETP_EDGE_FUZZ_V2)
-#define ETP_XMAX_V2			(1152 - ETP_EDGE_FUZZ_V2)
-#define ETP_YMIN_V2			(   0 + ETP_EDGE_FUZZ_V2)
-#define ETP_YMAX_V2			( 768 - ETP_EDGE_FUZZ_V2)
+#define ETP_XMIN_V2			0
+#define ETP_XMAX_V2			1152
+#define ETP_YMIN_V2			0
+#define ETP_YMAX_V2			768
 
 #define ETP_PMIN_V2			0
 #define ETP_PMAX_V2			255