[PATCH RESEND v5 03/23] drm/sun4i: backend: Use explicit fourcc helpers for packed YUV422 check

From: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
To: dri-devel@lists.freedesktop.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com
Cc: Maxime Ripard <maxime.ripard@bootlin.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Chen-Yu Tsai <wens@csie.org>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Sean Paul <sean@poorly.run>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Subject: [PATCH RESEND v5 03/23] drm/sun4i: backend: Use explicit fourcc helpers for packed YUV422 check
Date: Fri, 18 Jan 2019 15:51:13 +0100	[thread overview]
Message-ID: <20190118145133.21281-4-paul.kocialkowski@bootlin.com> (raw)
In-Reply-To: <20190118145133.21281-1-paul.kocialkowski@bootlin.com>

Checking for the number of planes is not sufficient to en ensure that
the format is a packed YUV422.

Use explicit fourcc helpers for the check instead.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
---
 drivers/gpu/drm/sun4i/sun4i_backend.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.c b/drivers/gpu/drm/sun4i/sun4i_backend.c
index 9e9255ee59cd..bbadc2ab9f4d 100644
--- a/drivers/gpu/drm/sun4i/sun4i_backend.c
+++ b/drivers/gpu/drm/sun4i/sun4i_backend.c
@@ -245,7 +245,8 @@ static int sun4i_backend_update_yuv_format(struct sun4i_backend *backend,
 			   SUN4I_BACKEND_ATTCTL_REG0_LAY_YUVEN);
 
 	/* TODO: Add support for the multi-planar YUV formats */
-	if (format->num_planes == 1)
+	if (drm_format_info_is_yuv_packed(format) &&
+	    drm_format_info_is_yuv_sampling_422(format))
 		val |= SUN4I_BACKEND_IYUVCTL_FBFMT_PACKED_YUV422;
 	else
 		DRM_DEBUG_DRIVER("Unsupported YUV format (0x%x)\n", fmt);
-- 
2.20.1

