From 867341b95891ca176e9cb5fcc3c68b325f0eb306 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Wed, 5 Oct 2016 17:33:45 +0200 Subject: [PATCH] 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 --- drivers/gpu/ipu-v3/ipu-csi.c | 16 ++++++++++++++++ include/video/imx-ipu-v3.h | 1 + 2 files changed, 17 insertions(+) diff --git a/drivers/gpu/ipu-v3/ipu-csi.c b/drivers/gpu/ipu-v3/ipu-csi.c index d6e5ded24418..63c7292f427a 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) diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h index cc8174c14df8..53cd07ccaa4c 100644 --- a/include/video/imx-ipu-v3.h +++ b/include/video/imx-ipu-v3.h @@ -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); -- 2.20.1