commit 451a73cd46573444f68f412c87439c0a291718ec
author Axel Lin <axel.lin@gmail.com> Thu Mar 11 09:50:07 2010 +0800
committer Liam Girdwood <lrg@slimlogic.co.uk> Mon Mar 22 19:44:45 2010 +0000
tree 3cf24100680cdcfad0fc7cf5b0dd0320f2092e3d
parent cdb868f58103825856e27aa4e1f26943fc119e41

lp3971: Fix BUCK_VOL_CHANGE_SHIFT logic

Given x=0,1,2, current implementation of BUCK_VOL_CHANGE_SHIFT(x) returns 0,4,8.
The correct return value should be 0,4,6.
This patch fix the logic.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

drivers/regulator/lp3971.c

diff --git a/drivers/regulator/lp3971.c b/drivers/regulator/lp3971.c
index 8bdcf41..b20b3e1 100644
--- a/drivers/regulator/lp3971.c
+++ b/drivers/regulator/lp3971.c
@@ -45,7 +45,7 @@
 	LP3971_BUCK2 -> 4
 	LP3971_BUCK3 -> 6
 */
-#define BUCK_VOL_CHANGE_SHIFT(x) (((1 << x) & ~0x01) << 1)
+#define BUCK_VOL_CHANGE_SHIFT(x) (((!!x) << 2) | (x & ~0x01))
 #define BUCK_VOL_CHANGE_FLAG_GO 0x01
 #define BUCK_VOL_CHANGE_FLAG_TARGET 0x02
 #define BUCK_VOL_CHANGE_FLAG_MASK 0x03