diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4009-drm-amd-display-Change-disable-backlight-ramp-change.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4009-drm-amd-display-Change-disable-backlight-ramp-change.patch | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4009-drm-amd-display-Change-disable-backlight-ramp-change.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4009-drm-amd-display-Change-disable-backlight-ramp-change.patch new file mode 100644 index 00000000..aaa03ed9 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4009-drm-amd-display-Change-disable-backlight-ramp-change.patch @@ -0,0 +1,66 @@ +From 5303c26b207b6f3c5aad5757cfd6b4efdc714d33 Mon Sep 17 00:00:00 2001 +From: Yongqiang Sun <yongqiang.sun@amd.com> +Date: Tue, 27 Mar 2018 10:05:10 -0400 +Subject: [PATCH 4009/4131] drm/amd/display: Change disable backlight ramp + change threshold from 0 to maximum value. + +Instead of user set brightness with range of percentage, +HLK test set brightness level with range of normal, this will result in +HLK test case set brightness from 0 to 255, DC set brightness with ramp is 0, +and disabled ramp change which will fail the HLK test. +Fix: +In case of unblank stream and turn on edp, change brightness level in +stream to 0xFFFFFFFF(actural maximum level is 0xFF), use that value as +a flag to recogonize this the case of resume from S3. + +Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com> +Reviewed-by: Eric Yang <eric.yang2@amd.com> +Acked-by: Harry Wentland <harry.wentland@amd.com> +--- + drivers/gpu/drm/amd/display/dc/core/dc_link.c | 2 +- + drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 2 +- + drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h | 2 ++ + 3 files changed, 4 insertions(+), 2 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c +index d9efdd9..0cd286f 100644 +--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c ++++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c +@@ -1982,7 +1982,7 @@ bool dc_link_set_backlight_level(const struct dc_link *link, uint32_t level, + return false; + + if (stream) { +- if (stream->bl_pwm_level == 0) ++ if (stream->bl_pwm_level == EDP_BACKLIGHT_RAMP_DISABLE_LEVEL) + frame_ramp = 0; + + ((struct dc_stream_state *)stream)->bl_pwm_level = level; +diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +index 432bed6..99d1922 100644 +--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c ++++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +@@ -1036,7 +1036,7 @@ void dce110_unblank_stream(struct pipe_ctx *pipe_ctx, + + if (link->local_sink && link->local_sink->sink_signal == SIGNAL_TYPE_EDP) { + link->dc->hwss.edp_backlight_control(link, true); +- stream->bl_pwm_level = 0; ++ stream->bl_pwm_level = EDP_BACKLIGHT_RAMP_DISABLE_LEVEL; + } + } + void dce110_blank_stream(struct pipe_ctx *pipe_ctx) +diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h +index e764cba..f54d478 100644 +--- a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h ++++ b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h +@@ -32,6 +32,8 @@ + #include "inc/hw/link_encoder.h" + #include "core_status.h" + ++#define EDP_BACKLIGHT_RAMP_DISABLE_LEVEL 0xFFFFFFFF ++ + enum pipe_gating_control { + PIPE_GATING_CONTROL_DISABLE = 0, + PIPE_GATING_CONTROL_ENABLE, +-- +2.7.4 + |