linux/drivers/gpu/drm/amd/display/dc/core, branch v5.12

drm/amdgpu/display: don't assert in set backlight function

2021-03-10T21:11:23Z

It just spams the logs. Reviewed-by: Nicholas Kazlauskas Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org

Revert "drm/amd/display: reuse current context instead of recreating one"

2021-02-22T23:19:54Z

This reverts commit 8866a67ab86cc0812e65c04f1ef02bcc41e24d68. Reason for revert: This breaks hotplug of HDMI on some systems, resulting in a blank screen. Caused general hangs on boot/hotplugs. Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1487 Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1492 Bug: https://bugzilla.kernel.org/show_bug.cgi?id=211649 Signed-off-by: Anson Jacob Reviewed-by: Bhawanpreet Lakha Acked-by: Alex Deucher Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org

drm/amd/display: fix 64bit division issue on 32bit OS

2021-02-09T20:48:01Z

Replace "/" with div_u64 for 64bit division on 32bit OS. Signed-off-by: Lang Yu Reviewed-by: Nicholas Kazlauskas Acked-by: Anson Jacob Acked-by: Huang Rui Signed-off-by: Alex Deucher

drm/amd/display: move edp sink present detection to hw init

2021-02-09T20:47:54Z

[Why] At SW init, we may not be ready to do detect eDP sink. Signed-off-by: Eric Yang Reviewed-by: Jun Lei Acked-by: Anson Jacob Signed-off-by: Alex Deucher

amd/display: remove unneeded variable: "pattern"

2021-02-02T17:12:51Z

Remove unneeded variable: "pattern". Signed-off-by: Bernard Zhao Signed-off-by: Alex Deucher

drm/amd/display: Reject too small viewport size when validating plane

2021-02-02T17:12:22Z

[why] Overlay won't move to a new positon if viewport size is smaller than what can be handled. It'd either disappear or stay at the old position. This condition is for example hit if overlay is moved too much outside of left or top edge of the screen, but it applies to any non-cursor plane type. [how] Reject this contidion at validation time. This gives the calling level a chance to handle this gracefully and avoid inconsistent behaivor. Signed-off-by: Nikola Cornij Reviewed-by: Nicholas Kazlauskas Acked-by: Anson Jacob Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Workaround for some legacy DP-VGA dongles

2021-02-02T17:12:09Z

[Why] Maximum resolution is 1440*900 when connecting to FHD monitor via some DP-VGA dongles. The display EDID reading fails over AUX/I2C via DP->VGA dongle, and this leads to the maximum resolution 1920*1080 cannot be obtained from EDID. [How] Provide a workaround for some legacy DP-VGA dongles with a longer aux delay. Signed-off-by: Taimur Hassan Reviewed-by: Wenjing Liu Acked-by: Anson Jacob Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: remove unused force_ignore_link_settings debug option

2021-02-02T17:11:49Z

[why] Remove force_ignore_link_settings debug option as it is no longer used. Signed-off-by: Wenjing Liu Reviewed-by: Eric Bernstein Acked-by: Anson Jacob Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: correct some hdcp variable naming

2021-02-02T17:09:09Z

[why] In HDCP update stream config interface, some variables are named as xxx_supported, but in fact the variable indicates whether or not xxx_enabled. Correct the naming so it is less confusing to read the code. Signed-off-by: Wenjing Liu Reviewed-by: George Shen Acked-by: Anson Jacob Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: reuse current context instead of recreating one

2021-02-02T17:08:50Z

[Why] Currently we discard the current context and recreate it. The current context is what is applied to the HW so we should be re-using this rather than creating a new context. Recreating the context can lead to mismatch between new context and the current context For example: gsl groups get changed when we create a new context this can cause issues in a multi display config (with flip immediate) because we don't align the existing gsl groups in the new and current context. If we reuse the current context the gsl group assignment stays the same. [How] Instead of discarding the current context, we instead just copy the current state and add/remove planes and streams. Signed-off-by: Bhawanpreet Lakha Reviewed-by: Nicholas Kazlauskas Acked-by: Anson Jacob Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher