size optimizations for max77686

This contains some size optimizations for the Maxim MAX77686 driver:
- change max77686_para.vol_{min,div} from u32 to u16 (currently their
  max value is 50000 so it should be fine)
- remove max77686_para.regnum which takes 4 bytes for each and is not
  used

(Patch was originally written by Hung-Te Lin, I'm just uploading it)

Change-Id: I24044427c49467e99380d1f60ebc59e69c285b22
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2124
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/src/drivers/maxim/max77686/max77686.h b/src/drivers/maxim/max77686/max77686.h
index 345471eb21..ee53e27a81 100644
--- a/src/drivers/maxim/max77686/max77686.h
+++ b/src/drivers/maxim/max77686/max77686.h
@@ -77,7 +77,6 @@ enum max77686_regnum {
  * @param vol_div	voltage division value of given buck/ldo
  */
 struct max77686_para {
-	enum max77686_regnum regnum;
 	u8	vol_addr;
 	u8	vol_bitpos;
 	u8	vol_bitmask;
@@ -86,8 +85,8 @@ struct max77686_para {
 	u8	reg_enbitmask;
 	u8	reg_enbiton;
 	u8	reg_enbitoff;
-	u32	vol_min;
-	u32	vol_div;
+	u16	vol_min;
+	u16	vol_div;
 };
 
 /* I2C device address for pmic max77686 */