linux-kernel - [PATCH] drm/arm/malidp: Consider rotation memory requirement in case of AFBC framebuffer

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Message-ID: <1541759832-19211-1-git-send-email-ayan.halder@arm.com>
Date:   Fri, 9 Nov 2018 10:37:19 +0000
From:   Ayan Halder <Ayan.Halder@....com>
To:     Ayan Halder <Ayan.Halder@....com>,
        Liviu Dudau <Liviu.Dudau@....com>,
        Brian Starkey <Brian.Starkey@....com>,
        "malidp@...s.arm.com" <malidp@...s.arm.com>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     nd <nd@....com>
Subject: [PATCH] drm/arm/malidp: Consider rotation memory requirement in case
 of AFBC framebuffer

Rotation memory for layers is shared with AFBC decoder block. Thus one needs to
calculate rotation memory requirement in case of AFBC framebuffer. This is
used later to verify if it can be sufficed by the hardware rotation memory
availibility.

Fixes: 66da13a ("drm/arm/malidp: Validate rotations for compressed/uncompressed framebuffers for each layer")
Signed-off-by: Ayan Kumar halder <ayan.halder@....com>
---
 drivers/gpu/drm/arm/malidp_planes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/arm/malidp_planes.c b/drivers/gpu/drm/arm/malidp_planes.c
index c9a6d3e..3f4dc64 100644
--- a/drivers/gpu/drm/arm/malidp_planes.c
+++ b/drivers/gpu/drm/arm/malidp_planes.c
@@ -470,7 +470,7 @@ static int malidp_de_plane_check(struct drm_plane *plane,
 	}
 
 	ms->rotmem_size = 0;
-	if (state->rotation & MALIDP_ROTATED_MASK) {
+	if ((state->rotation & MALIDP_ROTATED_MASK) || fb->modifier) {
 		int val;
 
 		val = mp->hwdev->hw->rotmem_required(mp->hwdev, state->crtc_w,
-- 
2.7.4