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authorAxel Lin <axel.lin@gmail.com>2010-03-11 09:50:07 +0800
committerLiam Girdwood <lrg@slimlogic.co.uk>2010-03-22 19:44:45 +0000
commit451a73cd46573444f68f412c87439c0a291718ec (patch)
tree3cf24100680cdcfad0fc7cf5b0dd0320f2092e3d /drivers/regulator
parentcdb868f58103825856e27aa4e1f26943fc119e41 (diff)
downloadlinux-451a73cd46573444f68f412c87439c0a291718ec.tar.bz2
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>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/lp3971.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/regulator/lp3971.c b/drivers/regulator/lp3971.c
index 8bdcf41ab68c..b20b3e1d821a 100644
--- a/drivers/regulator/lp3971.c
+++ b/drivers/regulator/lp3971.c
@@ -45,7 +45,7 @@ static int lp3971_set_bits(struct lp3971 *lp3971, u8 reg, u16 mask, u16 val);
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