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gpu: ipu-v3: add ipu_csi_set_downsize 

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

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Philipp Zabel 2016-10-05 17:33:45 +02:00
parent cdda2df7e0
commit 867341b958
2 changed files with 17 additions and 0 deletions
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16
drivers/gpu/ipu-v3/ipu-csi.c
View File

@ -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)

1
include/video/imx-ipu-v3.h
View File

@ -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);