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| author | Philipp Zabel <p.zabel@pengutronix.de> | 2016-10-05 17:33:45 +0200 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2016-11-07 15:17:47 +0100 |
| commit | 867341b95891ca176e9cb5fcc3c68b325f0eb306 (patch) | |
| tree | 1fe495b652954433e4219b0acd337a1c80c799f4 /drivers/gpu/ipu-v3/ipu-csi.c | |
| parent | cdda2df7e05d84fee0a8298076941928af036c73 (diff) | |
| download | linux-0-day-867341b95891ca176e9cb5fcc3c68b325f0eb306.tar.gz linux-0-day-867341b95891ca176e9cb5fcc3c68b325f0eb306.tar.xz | |
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>
Diffstat (limited to 'drivers/gpu/ipu-v3/ipu-csi.c')
| -rw-r--r-- | drivers/gpu/ipu-v3/ipu-csi.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/ipu-v3/ipu-csi.c b/drivers/gpu/ipu-v3/ipu-csi.c index d6e5ded244181..63c7292f427a2 100644 --- a/drivers/gpu/ipu-v3/ipu-csi.c +++ b/drivers/gpu/ipu-v3/ipu-csi.c @@ -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) |