From 768f719ab7b045e30055be3b4ceb2fcf9ceb58f2 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 25 Jan 2019 09:47:05 +0000 Subject: drm/armada: fix crtc interlace We support interlace, but this was broken when we could no longer get a ref on the vblank interrupt. Arrange to get the ref on the vblank interrupt after we've re-enabled vblank, and put it before we disable the vblank. Signed-off-by: Russell King --- drivers/gpu/drm/armada/armada_crtc.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/armada/armada_crtc.c b/drivers/gpu/drm/armada/armada_crtc.c index ba4a3fab7745..09bade15f51c 100644 --- a/drivers/gpu/drm/armada/armada_crtc.c +++ b/drivers/gpu/drm/armada/armada_crtc.c @@ -278,16 +278,9 @@ static void armada_drm_crtc_mode_set_nofb(struct drm_crtc *crtc) armada_reg_queue_set(regs, i, sclk, LCD_CFG_SCLK_DIV); - if (interlaced ^ dcrtc->interlaced) { - if (adj->flags & DRM_MODE_FLAG_INTERLACE) - drm_crtc_vblank_get(&dcrtc->crtc); - else - drm_crtc_vblank_put(&dcrtc->crtc); - dcrtc->interlaced = interlaced; - } - spin_lock_irqsave(&dcrtc->irq_lock, flags); + dcrtc->interlaced = interlaced; /* Even interlaced/progressive frame */ dcrtc->v[1].spu_v_h_total = adj->crtc_vtotal << 16 | adj->crtc_htotal; @@ -390,6 +383,9 @@ static void armada_drm_crtc_atomic_disable(struct drm_crtc *crtc, DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); + if (old_state->adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) + drm_crtc_vblank_put(crtc); + drm_crtc_vblank_off(crtc); armada_drm_crtc_update(dcrtc, false); @@ -434,6 +430,9 @@ static void armada_drm_crtc_atomic_enable(struct drm_crtc *crtc, armada_drm_crtc_update(dcrtc, true); drm_crtc_vblank_on(crtc); + if (crtc->state->adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) + WARN_ON(drm_crtc_vblank_get(crtc)); + armada_drm_crtc_queue_state_event(crtc); } -- cgit