Commit 43e36a22 authored by Niklas Söderlund's avatar Niklas Söderlund Committed by Mauro Carvalho Chehab
Browse files

media: rcar-vin: Cache the CSI-2 channel selection value 



In preparation of suspend/resume support cache the chsel value when
written to the register so it can be restored on resume if needed.

Signed-off-by: default avatarNiklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: default avatarJacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent b83a18cc

drivers/media/platform/rcar-vin/rcar-dma.c

+2 −0
Original line number Diff line number Diff line
@@ -1456,6 +1456,8 @@ int rvin_set_channel_routing(struct rvin_dev *vin, u8 chsel) 


	vin_dbg(vin, "Set IFMD 0x%x\n", ifmd);



	vin->chsel = chsel;



	/* Restore VNMC. */

	rvin_write(vin, vnmc, VNMC_REG);

drivers/media/platform/rcar-vin/rcar-vin.h

+2 −0
Original line number Diff line number Diff line
@@ -189,6 +189,7 @@ struct rvin_info { 
 * @state:		keeps track of operation state

 *

 * @is_csi:		flag to mark the VIN as using a CSI-2 subdevice

 * @chsel		Cached value of the current CSI-2 channel selection

 *

 * @mbus_code:		media bus format code

 * @format:		active V4L2 pixel format
@@ -232,6 +233,7 @@ struct rvin_dev { 
	enum rvin_dma_state state;



	bool is_csi;

	unsigned int chsel;



	u32 mbus_code;

	struct v4l2_pix_format format;