diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1887-drm-amd-display-add-support-for-disconnected-eDP-pan.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1887-drm-amd-display-add-support-for-disconnected-eDP-pan.patch | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1887-drm-amd-display-add-support-for-disconnected-eDP-pan.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1887-drm-amd-display-add-support-for-disconnected-eDP-pan.patch new file mode 100644 index 00000000..79acc83b --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1887-drm-amd-display-add-support-for-disconnected-eDP-pan.patch @@ -0,0 +1,60 @@ +From 94a798bd25229ceb7e8037ea292afdf4b6cb2d60 Mon Sep 17 00:00:00 2001 +From: Jun Lei <Jun.Lei@amd.com> +Date: Mon, 15 Apr 2019 14:52:25 -0400 +Subject: [PATCH 1887/2940] drm/amd/display: add support for disconnected eDP + panels + +[why] +On some configurations, eDP from GPU is muxed with another GPU. DC does +not know state of mux, but DM has this knowledge. This flag allows DC to ignore +creating EDP link when DM informs DC that EDP mux is not connected. + +[how] +Add flag to dc, populate flag in DM + +Change-Id: Ia5018dcf52476cad448c02b59cb3f8f3e59856d1 +Signed-off-by: Jun Lei <Jun.Lei@amd.com> +Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> +Acked-by: Bhawanpreet Lakha <Bhawanpreet Lakha@amd.com> +--- + drivers/gpu/drm/amd/display/dc/core/dc.c | 11 ++++++++--- + drivers/gpu/drm/amd/display/dc/dc.h | 1 + + 2 files changed, 9 insertions(+), 3 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c +index 03abbf6ce596..fd57fd1faccb 100644 +--- a/drivers/gpu/drm/amd/display/dc/core/dc.c ++++ b/drivers/gpu/drm/amd/display/dc/core/dc.c +@@ -175,9 +175,14 @@ static bool create_links( + link = link_create(&link_init_params); + + if (link) { +- dc->links[dc->link_count] = link; +- link->dc = dc; +- ++dc->link_count; ++ if (dc->config.edp_not_connected && ++ link->connector_signal == SIGNAL_TYPE_EDP) { ++ link_destroy(&link); ++ } else { ++ dc->links[dc->link_count] = link; ++ link->dc = dc; ++ ++dc->link_count; ++ } + } + } + +diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h +index 183924affc91..a371921b7c53 100644 +--- a/drivers/gpu/drm/amd/display/dc/dc.h ++++ b/drivers/gpu/drm/amd/display/dc/dc.h +@@ -208,6 +208,7 @@ struct dc_config { + bool disable_fractional_pwm; + bool allow_seamless_boot_optimization; + bool power_down_display_on_boot; ++ bool edp_not_connected; + }; + + enum visual_confirm { +-- +2.17.1 + |