[PATCH RESEND v5 05/23] drm/sun4i: frontend: Determine input format based on colorspace

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 05/23] drm/sun4i: frontend: Determine input format based on colorspace
Date: Fri, 18 Jan 2019 15:51:15 +0100	[thread overview]
Message-ID: <20190118145133.21281-6-paul.kocialkowski@bootlin.com> (raw)
In-Reply-To: <20190118145133.21281-1-paul.kocialkowski@bootlin.com>

Since all the RGB input formats have the same value for the DATA_FMT
field of the INPUT_FMT register, we can group them when the format is
known to be RGB. Here, we assume that a non-YUV format is RGB, because
the hardware does not support any other colorspace than RGB and YUV.

Use the DRM format info structure to check whether the format uses a
YUV colorspace.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
---
 drivers/gpu/drm/sun4i/sun4i_frontend.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.c b/drivers/gpu/drm/sun4i/sun4i_frontend.c
index dd5af3019099..7c7a5ea0cf58 100644
--- a/drivers/gpu/drm/sun4i/sun4i_frontend.c
+++ b/drivers/gpu/drm/sun4i/sun4i_frontend.c
@@ -108,14 +108,12 @@ static int
 sun4i_frontend_drm_format_to_input_fmt(const struct drm_format_info *format,
 				       u32 *val)
 {
-	switch (format->format) {
-	case DRM_FORMAT_XRGB8888:
+	if (!format->is_yuv)
 		*val = SUN4I_FRONTEND_INPUT_FMT_DATA_FMT_RGB;
-		return 0;
-
-	default:
+	else
 		return -EINVAL;
-	}
+
+	return 0;
 }
 
 static int
-- 
2.20.1

