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drm/fsl-du: Implement some semblance of vblank event handling

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No idea how exactly fsl-du commits hw state changes, but here in flush
is probably the safest place.

While at it nuke the dummy functions.

v2: Be more robust and either arm, when the CRTC is on, or just send
the event out right away.

Cc: Stefan Agner <stefan@agner.ch>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465388359-8070-4-git-send-email-daniel.vetter@ffwll.ch
This commit is contained in:
Daniel Vetter 2016-06-08 14:18:56 +02:00
parent ed4f885657
commit 9433bd67dd
1 changed files with 12 additions and 13 deletions
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25
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c
View File

@ -22,20 +22,21 @@
#include "fsl_dcu_drm_drv.h"
#include "fsl_dcu_drm_plane.h"
static void fsl_dcu_drm_crtc_atomic_begin(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
}
static int fsl_dcu_drm_crtc_atomic_check(struct drm_crtc *crtc,
struct drm_crtc_state *state)
{
return 0;
}
static void fsl_dcu_drm_crtc_atomic_flush(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
struct drm_pending_vblank_event *event = crtc->state->event;
if (event) {
crtc->state->event = NULL;
spin_lock_irq(&crtc->dev->event_lock);
if (drm_crtc_vblank_get(crtc) == 0)
drm_crtc_arm_vblank_event(crtc, event);
else
drm_crtc_send_vblank_event(crtc, event);
spin_unlock_irq(&crtc->dev->event_lock);
}
}
static void fsl_dcu_drm_disable_crtc(struct drm_crtc *crtc)
@ -117,8 +118,6 @@ static void fsl_dcu_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
}
static const struct drm_crtc_helper_funcs fsl_dcu_drm_crtc_helper_funcs = {
.atomic_begin = fsl_dcu_drm_crtc_atomic_begin,
.atomic_check = fsl_dcu_drm_crtc_atomic_check,
.atomic_flush = fsl_dcu_drm_crtc_atomic_flush,
.disable = fsl_dcu_drm_disable_crtc,
.enable = fsl_dcu_drm_crtc_enable,