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drm/vc4: crtc: Create vblank reporting function

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We'll need that code in the HVS driver, so let's create a shared function
to reuse it.

Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20220711173939.1132294-15-maxime@cerno.tech
This commit is contained in:
Maxime Ripard 2022-07-11 19:38:44 +02:00
parent 4a9551237d
commit 68e4a69aec
No known key found for this signature in database
GPG Key ID: E3EF0D6F671851C5
2 changed files with 16 additions and 8 deletions
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23
drivers/gpu/drm/vc4/vc4_crtc.c
View File

@ -544,6 +544,20 @@ int vc4_crtc_disable_at_boot(struct drm_crtc *crtc)
return 0;
}
void vc4_crtc_send_vblank(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
unsigned long flags;
if (!crtc->state || !crtc->state->event)
return;
spin_lock_irqsave(&dev->event_lock, flags);
drm_crtc_send_vblank_event(crtc, crtc->state->event);
crtc->state->event = NULL;
spin_unlock_irqrestore(&dev->event_lock, flags);
}
static void vc4_crtc_atomic_disable(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
@ -567,14 +581,7 @@ static void vc4_crtc_atomic_disable(struct drm_crtc *crtc,
* Make sure we issue a vblank event after disabling the CRTC if
* someone was waiting it.
*/
if (crtc->state->event) {
unsigned long flags;
spin_lock_irqsave(&dev->event_lock, flags);
drm_crtc_send_vblank_event(crtc, crtc->state->event);
crtc->state->event = NULL;
spin_unlock_irqrestore(&dev->event_lock, flags);
}
vc4_crtc_send_vblank(crtc);
}
static void vc4_crtc_atomic_enable(struct drm_crtc *crtc,

1
drivers/gpu/drm/vc4/vc4_drv.h
View File

@ -862,6 +862,7 @@ void vc4_crtc_destroy_state(struct drm_crtc *crtc,
struct drm_crtc_state *state);
void vc4_crtc_reset(struct drm_crtc *crtc);
void vc4_crtc_handle_vblank(struct vc4_crtc *crtc);
void vc4_crtc_send_vblank(struct drm_crtc *crtc);
void vc4_crtc_get_margins(struct drm_crtc_state *state,
unsigned int *left, unsigned int *right,
unsigned int *top, unsigned int *bottom);