This patch adds a function to enable line interlaced buffer scanout
and writing.
Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
---
drivers/gpu/ipu-v3/ipu-common.c | 19 +++++++++++++++++++
include/video/imx-ipu-v3.h | 1 +
2 files changed, 20 insertions(+)
diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c
index a4910d8..94b9e8e 100644
--- a/drivers/gpu/ipu-v3/ipu-common.c
+++ b/drivers/gpu/ipu-v3/ipu-common.c
@@ -525,6 +525,25 @@ int ipu_cpmem_set_image(struct ipu_ch_param __iomem *cpmem,
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_image);
+int ipu_ch_cpmem_set_interlaced_scan(struct ipuv3_channel *channel)
+{
+ u32 stride;
+ struct ipu_soc *ipu = channel->ipu;
+ struct ipu_ch_param __iomem *p = ipu_get_cpmem(channel);
+
+ stride = ipu_ch_param_read_field(p, IPU_FIELD_SL) + 1;
+ if (stride % 8)
+ dev_warn(ipu->dev,
+ "IDMAC%d's ILO is not 8-byte aligned\n", channel->num);
+
+ ipu_ch_param_write_field(p, IPU_FIELD_SO, 1);
+ ipu_ch_param_write_field(p, IPU_FIELD_ILO, stride / 8);
+ ipu_ch_param_write_field(p, IPU_FIELD_SL, 2 * stride - 1);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(ipu_ch_cpmem_set_interlaced_scan);
+
enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat)
{
switch (pixelformat) {
diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h
index 2d14425..77a82f5 100644
--- a/include/video/imx-ipu-v3.h
+++ b/include/video/imx-ipu-v3.h
@@ -320,6 +320,7 @@ void ipu_cpmem_set_yuv_planar_full(struct ipu_ch_param __iomem *p,
int ipu_cpmem_set_fmt(struct ipu_ch_param __iomem *cpmem, u32 pixelformat);
int ipu_cpmem_set_image(struct ipu_ch_param __iomem *cpmem,
struct ipu_image *image);
+int ipu_ch_cpmem_set_interlaced_scan(struct ipuv3_channel *channel);
enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc);
enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat);
--
2.0.0.rc2
--
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