From: Luca Ceresoli <luca@lucaceresoli.net>
Date: Tue, 9 Apr 2019 06:57:42 +0000 (+0200)
Subject: i2c: muxes: pca954x: clarify enable field
X-Git-Tag: v2019.07-rc1~29^2~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5995cdb167a4e8d3049cc25ca37c13ab85a63ac0;p=platform%2Fkernel%2Fu-boot.git

i2c: muxes: pca954x: clarify enable field

The chip_desc.enable field is used only for muxes, not for switches.
Document it and remove the unused values.

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Heiko Schocher<hs@denx.de>
---

diff --git a/drivers/i2c/muxes/pca954x.c b/drivers/i2c/muxes/pca954x.c
index bd4e9ab..5669753 100644
--- a/drivers/i2c/muxes/pca954x.c
+++ b/drivers/i2c/muxes/pca954x.c
@@ -22,7 +22,7 @@ enum pca_type {
 };
 
 struct chip_desc {
-	u8 enable;
+	u8 enable; /* Enable mask in ctl register (used for muxes only) */
 	enum muxtype {
 		pca954x_ismux = 0,
 		pca954x_isswi,
@@ -48,12 +48,10 @@ static const struct chip_desc chips[] = {
 		.width = 8,
 	},
 	[PCA9548] = {
-		.enable = 0x8,
 		.muxtype = pca954x_isswi,
 		.width = 8,
 	},
 	[PCA9646] = {
-		.enable = 0x0,
 		.muxtype = pca954x_isswi,
 		.width = 4,
 	},