diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2018-03-21 12:20:24 +0200 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2018-03-28 09:45:43 +0300 |
| commit | 49efffc7fbd48d5ea3d0dd60c218c7502d4a179d (patch) | |
| tree | c70bd6cbff1e3d4ce5ae91e2119ce15ce77807db /drivers/gpu/drm/drm_atomic_helper.c | |
| parent | f4392860b4fe55d7d7cadaa64743c9b2466e4fd8 (diff) | |
| download | linux-49efffc7fbd48d5ea3d0dd60c218c7502d4a179d.tar.gz | |
drm: Add drm_mode_config->normalize_zpos boolean
Instead of drivers duplicating the drm_atomic_helper_check() code to be
able to normalize the zpos they can use the normalize_zpos flag to let the
drm core to do it.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180321102029.15248-2-peter.ujfalusi@ti.com
Diffstat (limited to 'drivers/gpu/drm/drm_atomic_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_atomic_helper.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index c35654591c12..d63c806e7d38 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -875,6 +875,11 @@ EXPORT_SYMBOL(drm_atomic_helper_check_planes); * functions depend upon an updated adjusted_mode.clock to e.g. properly compute * watermarks. * + * Note that zpos normalization will add all enable planes to the state which + * might not desired for some drivers. + * For example enable/disable of a cursor plane which have fixed zpos value + * would trigger all other enabled planes to be forced to the state change. + * * RETURNS: * Zero for success or -errno */ @@ -887,6 +892,12 @@ int drm_atomic_helper_check(struct drm_device *dev, if (ret) return ret; + if (dev->mode_config.normalize_zpos) { + ret = drm_atomic_normalize_zpos(dev, state); + if (ret) + return ret; + } + ret = drm_atomic_helper_check_planes(dev, state); if (ret) return ret; |