From: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Date: Sat, 4 Mar 2017 20:56:46 -0500
Subject: drm/amd/display: Fix i2c write flag.
Git-commit: bb01672c79649de08fe335b55aea5315d781c443
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

I2C_M_RD was translated to write instead of read.

Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c |    2 +-
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c   |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
@@ -423,7 +423,7 @@ bool dm_helpers_submit_i2c(
 		return false;
 
 	for (i = 0; i < num; i++) {
-		msgs[i].flags = cmd->payloads[i].write ? I2C_M_RD : 0;
+		msgs[i].flags = cmd->payloads[i].write ? 0 : I2C_M_RD;
 		msgs[i].addr = cmd->payloads[i].address;
 		msgs[i].len = cmd->payloads[i].length;
 		msgs[i].buf = cmd->payloads[i].data;
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
@@ -1948,7 +1948,7 @@ int amdgpu_dm_i2c_xfer(struct i2c_adapte
 	cmd.speed = 100;
 
 	for (i = 0; i < num; i++) {
-		cmd.payloads[i].write = (msgs[i].flags & I2C_M_RD);
+		cmd.payloads[i].write = !(msgs[i].flags & I2C_M_RD);
 		cmd.payloads[i].address = msgs[i].addr;
 		cmd.payloads[i].length = msgs[i].len;
 		cmd.payloads[i].data = msgs[i].buf;