linux-kernel - [PATCH 4/8] drm: mali-dp: Don't force source size == crtc size

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Message-Id: <20170117162507.31961-5-Liviu.Dudau@arm.com>
Date:   Tue, 17 Jan 2017 16:25:03 +0000
From:   Liviu Dudau <Liviu.Dudau@....com>
To:     Brian Starkey <brian.starkey@....com>
Cc:     Mali DP Maintainers <malidp@...s.arm.com>,
        David Airlie <airlied@...ux.ie>,
        DRI devel <dri-devel@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Liviu Dudau <liviu.dudau@....com>
Subject: [PATCH 4/8] drm: mali-dp: Don't force source size == crtc size

From: Brian Starkey <brian.starkey@....com>

Remove the check enforcing that src_w and src_h match crtc_w and crtc_h,
as this prevents rotation from working.

The check was intended to disallow scaling, but
drm_plane_helper_check_state() does that for us, while also taking
rotation into account, so the removed check was redundant in any case.

Signed-off-by: Brian Starkey <brian.starkey@....com>
Signed-off-by: Liviu Dudau <liviu.dudau@....com>
---
 drivers/gpu/drm/arm/malidp_planes.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/arm/malidp_planes.c b/drivers/gpu/drm/arm/malidp_planes.c
index f684fe4a80d2..69eba71253c9 100644
--- a/drivers/gpu/drm/arm/malidp_planes.c
+++ b/drivers/gpu/drm/arm/malidp_planes.c
@@ -135,8 +135,7 @@ static int malidp_de_plane_check(struct drm_plane *plane,
 	if ((state->crtc_w > mp->hwdev->max_line_size) ||
 	    (state->crtc_h > mp->hwdev->max_line_size) ||
 	    (state->crtc_w < mp->hwdev->min_line_size) ||
-	    (state->crtc_h < mp->hwdev->min_line_size) ||
-	    (state->crtc_w != src_w) || (state->crtc_h != src_h))
+	    (state->crtc_h < mp->hwdev->min_line_size))
 		return -EINVAL;
 
 	/* packed RGB888 / BGR888 can't be rotated or flipped */
-- 
2.11.0