diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3257-drm-amd-display-fix-backlight-not-off-at-resume-from.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3257-drm-amd-display-fix-backlight-not-off-at-resume-from.patch | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3257-drm-amd-display-fix-backlight-not-off-at-resume-from.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3257-drm-amd-display-fix-backlight-not-off-at-resume-from.patch new file mode 100644 index 00000000..e1ff074b --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3257-drm-amd-display-fix-backlight-not-off-at-resume-from.patch @@ -0,0 +1,79 @@ +From 175d8b1b5391be3686d218d400c37af79b202a18 Mon Sep 17 00:00:00 2001 +From: Charlene Liu <charlene.liu@amd.com> +Date: Mon, 8 Jan 2018 16:47:39 -0500 +Subject: [PATCH 3257/4131] drm/amd/display: fix backlight not off at resume + from S4 + +Signed-off-by: Charlene Liu <charlene.liu@amd.com> +Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com> +Acked-by: Harry Wentland <harry.wentland@amd.com> +--- + .../amd/display/dc/dce110/dce110_hw_sequencer.c | 33 ++++++++++++++++++---- + 1 file changed, 27 insertions(+), 6 deletions(-) + +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 d036d1d..f982f23 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 +@@ -914,6 +914,7 @@ void hwss_edp_backlight_control( + /*todo: unhardcode*/ + cntl.lanes_number = LANE_COUNT_FOUR; + cntl.hpd_sel = link->link_enc->hpd_source; ++ cntl.signal = SIGNAL_TYPE_EDP; + + /* For eDP, the following delays might need to be considered + * after link training completed: +@@ -1407,7 +1408,24 @@ static void disable_vga_and_power_gate_all_controllers( + } + } + +-static struct dc_link *get_link_for_eDP_not_in_use( ++static struct dc_link *get_link_for_edp( ++ struct dc *dc) ++{ ++ int i; ++ struct dc_link *link = NULL; ++ ++ /* check if there is an eDP panel not in use */ ++ for (i = 0; i < dc->link_count; i++) { ++ if (dc->links[i]->local_sink && ++ dc->links[i]->local_sink->sink_signal == SIGNAL_TYPE_EDP) { ++ link = dc->links[i]; ++ break; ++ } ++ } ++ ++ return link; ++} ++static struct dc_link *get_link_for_edp_not_in_use( + struct dc *dc, + struct dc_state *context) + { +@@ -1441,16 +1459,19 @@ static struct dc_link *get_link_for_eDP_not_in_use( + */ + void dce110_enable_accelerated_mode(struct dc *dc, struct dc_state *context) + { +- struct dc_link *eDP_link_to_turnoff = get_link_for_eDP_not_in_use(dc, context); ++ struct dc_link *edp_link_to_turnoff = get_link_for_edp_not_in_use(dc, context); ++ ++ struct dc_link *edp_link = get_link_for_edp(dc); + +- if (eDP_link_to_turnoff) +- dc->hwss.edp_backlight_control(eDP_link_to_turnoff, false); ++ if (edp_link) ++ /*we need turn off backlight before DP_blank and encoder powered down*/ ++ dc->hwss.edp_backlight_control(edp_link, false); + + power_down_all_hw_blocks(dc); + disable_vga_and_power_gate_all_controllers(dc); + +- if (eDP_link_to_turnoff) +- dc->hwss.edp_power_control(eDP_link_to_turnoff, false); ++ if (edp_link_to_turnoff) ++ dc->hwss.edp_power_control(edp_link_to_turnoff, false); + + bios_set_scratch_acc_mode_change(dc->ctx->dc_bios); + } +-- +2.7.4 + |