-----Original Message----- From: Maarten Lankhorst maarten.lankhorst@linux.intel.com Sent: Monday, August 10, 2020 8:17 PM To: Shankar, Uma uma.shankar@intel.com; intel-gfx@lists.freedesktop.org Cc: Zuo, Alex alex.zuo@intel.com; Kumar, Abhishek4 abhishek4.kumar@intel.com; stable@vger.kernel.org Subject: Re: [PATCH] drm/i915/display: Fix NV12 sub plane atomic state
Op 10-08-2020 om 17:16 schreef Uma Shankar:
From: Abhishek Kumar abhishek4.kumar@intel.com
For NV12 display sub plane is also configured and drivers internally create plane atomic state. Driver copies all of the param of main plane atomic state to sub planer atomic state but in sub plane atomic state crtc is not added ,so when drm atomic state is configured for commit ,fake commit handler is created for sub plane and also state is not cleared when NV12 buffer is not displayed.
Fixes: 1f594b209fe1 ("drm/i915: Remove special case slave handling during hw programming") Change-Id: I447b16bf433dfb5b43b2e4cade258fc775aee065 Cc: Maarten Lankhorst maarten.lankhorst@linux.intel.com Cc: stable@vger.kernel.org Signed-off-by: Abhishek Kumar abhishek4.kumar@intel.com Signed-off-by: Uma Shankar uma.shankar@intel.com
drivers/gpu/drm/i915/display/intel_display.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 522c772a2111..76da2189b01d 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -12502,6 +12502,7 @@ static int icl_check_nv12_planes(struct
intel_crtc_state *crtc_state)
struct intel_atomic_state *state = to_intel_atomic_state(crtc_state- uapi.state); struct intel_plane *plane, *linked; struct intel_plane_state *plane_state;
int ret; int i;
if (INTEL_GEN(dev_priv) < 11)
@@ -12576,6 +12577,11 @@ static int icl_check_nv12_planes(struct
intel_crtc_state *crtc_state)
linked_state->uapi.src = plane_state->uapi.src; linked_state->uapi.dst = plane_state->uapi.dst;
/* Update Linked plane crtc same as of main plane */ret = drm_atomic_set_crtc_for_plane(&linked_state->uapi,plane_state->uapi.crtc);
if(ret)return ret;- if (icl_is_hdr_plane(dev_priv, plane->id)) { if (linked->id == PLANE_SPRITE5) plane_state->cus_ctl |= PLANE_CUS_PLANE_7;
That shouldnt be done, uapi.crtc should be NULL for the slave plane.
Hi Maarten, We seem to get EBUSY from commit and flips fail with NV12, RGB seems to work fine. This change is making things work. What could be possibly going wrong ?
This is being tested with Chrome browser app while switching tabs with videos being played on each of these tabs.
Regards, Uma Shankar