From: Charlene Liu <charlene.liu@amd.com>
Date: Thu, 3 May 2018 17:51:07 -0400
Subject: drm/amd/display: Clean up submit_channel_request
Git-commit: 66e48cd37147e153cef61bcbfbfa4771fe632207
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Vitaly Prosyak <Vitaly.Prosyak@amd.com>
Acked-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/dc/i2caux/dce110/aux_engine_dce110.c | 42 +++++-----
1 file changed, 21 insertions(+), 21 deletions(-)
--- a/drivers/gpu/drm/amd/display/dc/i2caux/dce110/aux_engine_dce110.c
+++ b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/aux_engine_dce110.c
@@ -198,27 +198,27 @@ static void submit_channel_request(
((request->type == AUX_TRANSACTION_TYPE_I2C) &&
((request->action == I2CAUX_TRANSACTION_ACTION_I2C_WRITE) ||
(request->action == I2CAUX_TRANSACTION_ACTION_I2C_WRITE_MOT)));
-
- /* clear_aux_error */
- REG_UPDATE_SEQ(AUXN_IMPCAL, AUXN_CALOUT_ERROR_AK,
- 1,
- 0);
-
- REG_UPDATE_SEQ(AUXP_IMPCAL, AUXP_CALOUT_ERROR_AK,
- 1,
- 0);
-
- /* force_default_calibrate */
- REG_UPDATE_1BY1_2(AUXN_IMPCAL,
- AUXN_IMPCAL_ENABLE, 1,
- AUXN_IMPCAL_OVERRIDE_ENABLE, 0);
-
- /* bug? why AUXN update EN and OVERRIDE_EN 1 by 1 while AUX P toggles OVERRIDE? */
-
- REG_UPDATE_SEQ(AUXP_IMPCAL, AUXP_IMPCAL_OVERRIDE_ENABLE,
- 1,
- 0);
-
+ if (REG(AUXN_IMPCAL)) {
+ /* clear_aux_error */
+ REG_UPDATE_SEQ(AUXN_IMPCAL, AUXN_CALOUT_ERROR_AK,
+ 1,
+ 0);
+
+ REG_UPDATE_SEQ(AUXP_IMPCAL, AUXP_CALOUT_ERROR_AK,
+ 1,
+ 0);
+
+ /* force_default_calibrate */
+ REG_UPDATE_1BY1_2(AUXN_IMPCAL,
+ AUXN_IMPCAL_ENABLE, 1,
+ AUXN_IMPCAL_OVERRIDE_ENABLE, 0);
+
+ /* bug? why AUXN update EN and OVERRIDE_EN 1 by 1 while AUX P toggles OVERRIDE? */
+
+ REG_UPDATE_SEQ(AUXP_IMPCAL, AUXP_IMPCAL_OVERRIDE_ENABLE,
+ 1,
+ 0);
+ }
/* set the delay and the number of bytes to write */
/* The length include