Merge 5.16-rc4 into tty-next

We need the tty/serial driver fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 22 insertions, 2 deletions

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index c27cb47bc988..1cd6b9f4a568 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -51,6 +51,7 @@
 #include <drm/drm_hdcp.h>
 #endif
 #include "amdgpu_pm.h"
+#include "amdgpu_atombios.h"
 
 #include "amd_shared.h"
 #include "amdgpu_dm_irq.h"
@@ -2561,6 +2562,22 @@ static int dm_resume(void *handle)
 	if (amdgpu_in_reset(adev)) {
 		dc_state = dm->cached_dc_state;
 
+		/*
+		 * The dc->current_state is backed up into dm->cached_dc_state
+		 * before we commit 0 streams.
+		 *
+		 * DC will clear link encoder assignments on the real state
+		 * but the changes won't propagate over to the copy we made
+		 * before the 0 streams commit.
+		 *
+		 * DC expects that link encoder assignments are *not* valid
+		 * when committing a state, so as a workaround it needs to be
+		 * cleared here.
+		 */
+		link_enc_cfg_init(dm->dc, dc_state);
+
+		amdgpu_dm_outbox_init(adev);
+
 		r = dm_dmub_hw_init(adev);
 		if (r)
 			DRM_ERROR("DMUB interface failed to initialize: status=%d\n", r);
@@ -2572,8 +2589,8 @@ static int dm_resume(void *handle)
 
 		for (i = 0; i < dc_state->stream_count; i++) {
 			dc_state->streams[i]->mode_changed = true;
-			for (j = 0; j < dc_state->stream_status->plane_count; j++) {
-				dc_state->stream_status->plane_states[j]->update_flags.raw
+			for (j = 0; j < dc_state->stream_status[i].plane_count; j++) {
+				dc_state->stream_status[i].plane_states[j]->update_flags.raw
 					= 0xffffffff;
 			}
 		}
@@ -3909,6 +3926,9 @@ static int amdgpu_dm_backlight_set_level(struct amdgpu_display_manager *dm,
 	caps = dm->backlight_caps[bl_idx];
 
 	dm->brightness[bl_idx] = user_brightness;
+	/* update scratch register */
+	if (bl_idx == 0)
+		amdgpu_atombios_scratch_regs_set_backlight_level(dm->adev, dm->brightness[bl_idx]);
 	brightness = convert_brightness_from_user(&caps, dm->brightness[bl_idx]);
 	link = (struct dc_link *)dm->backlight_link[bl_idx];