xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm: mali-dp: Add writeback connector

Browse Source 
Mali-DP has a memory writeback engine which can be used to write the
composition result to a memory buffer. Expose this functionality as a
DRM writeback connector on supported hardware.

Changes since v1:
 Daniel Vetter:
 - Don't require a modeset when writeback routing changes
 - Make writeback connector always disconnected

Changes since v2:
 - Rebase onto new drm_writeback_connector
 - Add reset callback, allocating subclassed state
 Daniel Vetter:
 - Squash out-fence support into this commit
 Gustavo Padovan:
 - Don't signal fence directly from driver (and drop malidp_mw_job)

Changes since v3:
 - Modifications to fit with Mali-DP commit tail changes

Signed-off-by: Brian Starkey <brian.starkey@arm.com>
[rebased and fixed conflicts]
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
This commit is contained in:
Brian Starkey
2017-11-02 16:49:51 +00:00
committed by Liviu Dudau
parent 09368e32a9
commit 8cbc5caf36
8 changed files with 301 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/arm/malidp_hw.c
View File

@@ -21,6 +21,7 @@
#include "malidp_drv.h"
#include "malidp_hw.h"
#include "malidp_mw.h"
enum {
MW_NOT_ENABLED = 0, /* SE writeback not enabled */
@@ -996,7 +997,11 @@ static irqreturn_t malidp_se_irq(int irq, void *arg)
if (status & se->vsync_irq) {
switch (hwdev->mw_state) {
case MW_ONESHOT:
drm_writeback_signal_completion(&malidp->mw_connector, 0);
break;
case MW_STOP:
drm_writeback_signal_completion(&malidp->mw_connector, 0);
/* disable writeback after stop */
hwdev->mw_state = MW_NOT_ENABLED;
break;