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Commit 867341b9 authored by Philipp Zabel's avatar Philipp Zabel
Browse files

gpu: ipu-v3: add ipu_csi_set_downsize 



Support downsizing to 1/2 width and/or height in the CSI.

Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
parent cdda2df7

drivers/gpu/ipu-v3/ipu-csi.c

+16 −0
Original line number Diff line number Diff line
@@ -529,6 +529,22 @@ void ipu_csi_set_window(struct ipu_csi *csi, struct v4l2_rect *w) 
}

EXPORT_SYMBOL_GPL(ipu_csi_set_window);



void ipu_csi_set_downsize(struct ipu_csi *csi, bool horiz, bool vert)

{

	unsigned long flags;

	u32 reg;



	spin_lock_irqsave(&csi->lock, flags);



	reg = ipu_csi_read(csi, CSI_OUT_FRM_CTRL);

	reg &= ~(CSI_HORI_DOWNSIZE_EN | CSI_VERT_DOWNSIZE_EN);

	reg |= (horiz ? CSI_HORI_DOWNSIZE_EN : 0) |

	       (vert ? CSI_VERT_DOWNSIZE_EN : 0);

	ipu_csi_write(csi, reg, CSI_OUT_FRM_CTRL);



	spin_unlock_irqrestore(&csi->lock, flags);

}



void ipu_csi_set_test_generator(struct ipu_csi *csi, bool active,

				u32 r_value, u32 g_value, u32 b_value,

				u32 pix_clk)

include/video/imx-ipu-v3.h

+1 −0
Original line number Diff line number Diff line
@@ -318,6 +318,7 @@ int ipu_csi_init_interface(struct ipu_csi *csi, 
bool ipu_csi_is_interlaced(struct ipu_csi *csi);

void ipu_csi_get_window(struct ipu_csi *csi, struct v4l2_rect *w);

void ipu_csi_set_window(struct ipu_csi *csi, struct v4l2_rect *w);

void ipu_csi_set_downsize(struct ipu_csi *csi, bool horiz, bool vert);

void ipu_csi_set_test_generator(struct ipu_csi *csi, bool active,

				u32 r_value, u32 g_value, u32 b_value,

				u32 pix_clk);