Commit bc023b5a authored by Laurent Pinchart's avatar Laurent Pinchart Committed by Mauro Carvalho Chehab
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media: imx: imx7-media-csi: Simplify imx7_csi_rx_fifo_clear() 



There's no need to read the CSICR1 register before each write in
imx7_csi_rx_fifo_clear(). Simplify the function.

Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: default avatarRui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent b5cbab5e

drivers/staging/media/imx/imx7-media-csi.c

+2 −6
Original line number Diff line number Diff line
@@ -294,14 +294,10 @@ static void imx7_csi_dma_reflash(struct imx7_csi *csi) 


static void imx7_csi_rx_fifo_clear(struct imx7_csi *csi)

{

	u32 cr1;

	u32 cr1 = imx7_csi_reg_read(csi, CSI_CSICR1) & ~BIT_FCC;



	cr1 = imx7_csi_reg_read(csi, CSI_CSICR1);

	imx7_csi_reg_write(csi, cr1 & ~BIT_FCC, CSI_CSICR1);

	cr1 = imx7_csi_reg_read(csi, CSI_CSICR1);

	imx7_csi_reg_write(csi, cr1, CSI_CSICR1);

	imx7_csi_reg_write(csi, cr1 | BIT_CLR_RXFIFO, CSI_CSICR1);



	cr1 = imx7_csi_reg_read(csi, CSI_CSICR1);

	imx7_csi_reg_write(csi, cr1 | BIT_FCC, CSI_CSICR1);

}