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MLK-17634-1: drm: imx: dcss: send vblank event from ISR

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Signed-off-by: Laurentiu Palcu <laurentiu.palcu@nxp.com>
This commit is contained in:
Laurentiu Palcu
2018-01-19 09:02:23 +02:00
parent 5e9cf338e7
commit 44c4512821
1 changed files with 23 additions and 5 deletions
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28
drivers/gpu/drm/imx/dcss/dcss-crtc.c
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@ -40,6 +40,8 @@ struct dcss_crtc {
struct drm_property *dtrc_table_ofs;
struct completion disable_completion;
struct drm_pending_vblank_event *event;
int vblank_cnt;
};
static void dcss_crtc_destroy(struct drm_crtc *crtc)
@ -113,15 +115,18 @@ static int dcss_crtc_atomic_check(struct drm_crtc *crtc,
static void dcss_crtc_atomic_begin(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
drm_crtc_vblank_on(crtc);
struct dcss_crtc *dcss_crtc = container_of(crtc, struct dcss_crtc,
base);
spin_lock_irq(&crtc->dev->event_lock);
if (crtc->state->event) {
WARN_ON(drm_crtc_vblank_get(crtc));
drm_crtc_arm_vblank_event(crtc, crtc->state->event);
crtc->state->event->pipe = drm_crtc_index(crtc);
WARN_ON(drm_crtc_vblank_get(crtc) != 0);
dcss_crtc->event = crtc->state->event;
crtc->state->event = NULL;
dcss_crtc->vblank_cnt = 0;
}
spin_unlock_irq(&crtc->dev->event_lock);
}
static void dcss_crtc_atomic_flush(struct drm_crtc *crtc,
@ -155,6 +160,8 @@ static void dcss_crtc_enable(struct drm_crtc *crtc)
dcss_dtg_enable(dcss, true, NULL);
dcss_ctxld_enable(dcss);
drm_crtc_vblank_on(crtc);
crtc->enabled = true;
}
@ -230,10 +237,21 @@ static const struct imx_drm_crtc_helper_funcs dcss_crtc_helper_funcs = {
static irqreturn_t dcss_crtc_irq_handler(int irq, void *dev_id)
{
struct dcss_crtc *dcss_crtc = dev_id;
struct drm_device *drm = dcss_crtc->base.dev;
struct drm_crtc *crtc = &dcss_crtc->base;
struct dcss_soc *dcss = dev_get_drvdata(dcss_crtc->dev->parent);
unsigned long flags;
drm_crtc_handle_vblank(&dcss_crtc->base);
spin_lock_irqsave(&drm->event_lock, flags);
if (dcss_crtc->event && !dcss_crtc->vblank_cnt--) {
drm_crtc_send_vblank_event(crtc, dcss_crtc->event);
drm_crtc_vblank_put(crtc);
dcss_crtc->event = NULL;
}
spin_unlock_irqrestore(&drm->event_lock, flags);
dcss_vblank_irq_clear(dcss);
return IRQ_HANDLED;