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drm/vc4: Report HVS underrun errors

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Add a debugfs entry and helper for reporting HVS underrun errors as
well as helpers for masking and unmasking the underrun interrupts.
Add an IRQ handler and initial IRQ configuration.
Rework related register definitions to take the channel number.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190220155124.25022-2-paul.kocialkowski@bootlin.com
This commit is contained in:
Boris Brezillon
2019-02-20 16:51:22 +01:00
committed by Maxime Ripard
parent dbfbe717cc
commit 531a1b622d
6 changed files with 140 additions and 35 deletions
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10
drivers/gpu/drm/vc4/vc4_kms.c
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@@ -138,6 +138,16 @@ vc4_atomic_complete_commit(struct drm_atomic_state *state)
{
struct drm_device *dev = state->dev;
struct vc4_dev *vc4 = to_vc4_dev(dev);
struct vc4_crtc *vc4_crtc;
int i;
for (i = 0; i < dev->mode_config.num_crtc; i++) {
if (!state->crtcs[i].ptr || !state->crtcs[i].commit)
continue;
vc4_crtc = to_vc4_crtc(state->crtcs[i].ptr);
vc4_hvs_mask_underrun(dev, vc4_crtc->channel);
}
drm_atomic_helper_wait_for_fences(dev, state, false);