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authorEric Anholt <eric@anholt.net>2019-04-01 11:35:59 -0700
committerEric Anholt <eric@anholt.net>2019-04-03 12:49:18 -0700
commitffc26740714962e3e8801dca7ef32b636b3781db (patch)
treefa69c90e11ee7b36c6497e8d7612ed1440ce4c62 /drivers/gpu/drm/vc4/vc4_kms.c
parentc9be804c8c7a2d3fcd8e236407c8623be0356a01 (diff)
downloadlinux-ffc26740714962e3e8801dca7ef32b636b3781db.tar.bz2
drm/vc4: Disable V3D interactions if the v3d component didn't probe.
One might want to use the VC4 display stack without using Mesa. Similar to the debugfs fixes for not having all of the possible display bits enabled, make sure you can't oops in vc4 if v3d isn't enabled. v2: Fix matching against other v3d variants (review by Paul), don't forget to set irq_enabled so that the vblank uapi works v3: Use -ENODEV instead of -EINVAL on Paul's suggestion. Signed-off-by: Eric Anholt <eric@anholt.net> Link: https://patchwork.freedesktop.org/patch/msgid/20190401183559.3823-2-eric@anholt.net Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_kms.c')
-rw-r--r--drivers/gpu/drm/vc4/vc4_kms.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
index 5160cad25fce..295dacc8bcb9 100644
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -525,6 +525,7 @@ int vc4_kms_load(struct drm_device *dev)
/* Set support for vblank irq fast disable, before drm_vblank_init() */
dev->vblank_disable_immediate = true;
+ dev->irq_enabled = true;
ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
if (ret < 0) {
dev_err(dev->dev, "failed to initialize vblank\n");