From mboxrd@z Thu Jan 1 00:00:00 1970 From: maxime.ripard@bootlin.com (Maxime Ripard) Date: Tue, 27 Nov 2018 09:58:33 +0100 Subject: [PATCH v2 25/43] drm/sun4i: frontend: Apply format sub-sampling to CH1 dimensions In-Reply-To: <20181123092515.2511-26-paul.kocialkowski@bootlin.com> References: <20181123092515.2511-1-paul.kocialkowski@bootlin.com> <20181123092515.2511-26-paul.kocialkowski@bootlin.com> Message-ID: <20181127085833.b6jhe5npgsvl2g5f@flea> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Nov 23, 2018 at 10:24:57AM +0100, Paul Kocialkowski wrote: > The frontend comes with two "channels", that can be configured > independently. When used in YUV mode, the first channel (CH0) represents > the luminance component while the second channel (CH1) represents the > chrominance. In RGB mode, both have to be configured the same way. > > Use variables (with the YUV terminology) for each channel's > dimensions, calculating the chroma dimensions from the luma dimensions > and the sub-sampling factors from the format description. > > Since the configured size only has pixel precision, the fractional > fixed-point part of the source size is dropped for both components to > ensure that the scaling factors are accurate. > > Signed-off-by: Paul Kocialkowski Applied, thanks! Maxime -- Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 228 bytes Desc: not available URL: