Hi Prabhakar,
On 07/16/2013 07:19 PM, Prabhakar Lad wrote:
From: "Lad, Prabhakar"<prabhakar.csengg@xxxxxxxxx>
This patch adds 'sync-on-green-active' property as part
of endpoint property.
Signed-off-by: Lad, Prabhakar<prabhakar.csengg@xxxxxxxxx>
---
Changes for v4:
1: Fixed review comments pointed by Sylwester.
Changes for v3:
1: Fixed review comments pointed by Laurent and Sylwester.
RFC v2 https://patchwork.kernel.org/patch/2578091/
RFC V1 https://patchwork.kernel.org/patch/2572341/
.../devicetree/bindings/media/video-interfaces.txt | 3 +++
drivers/media/v4l2-core/v4l2-of.c | 4 ++++
include/media/v4l2-mediabus.h | 2 ++
3 files changed, 9 insertions(+)
diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt b/Documentation/devicetree/bindings/media/video-interfaces.txt
index e022d2d..5186c7e 100644
--- a/Documentation/devicetree/bindings/media/video-interfaces.txt
+++ b/Documentation/devicetree/bindings/media/video-interfaces.txt
@@ -101,6 +101,9 @@ Optional endpoint properties
array contains only one entry.
- clock-noncontinuous: a boolean property to allow MIPI CSI-2 non-continuous
clock mode.
+- sync-on-green-active: polarity field when video synchronization is
+ Sync-On-Green. When set the driver determines whether it's a normal operation
+ or inverted operation.
Would you mind adding this entry after pclk-sample property description ?
And how about describing it a bit more precisely and similarly to
VSYNC/HSYNC,
e.g.
- sync-on-green-active: active state of Sync-on-green (SoG) signal,
0/1 for LOW/HIGH respectively.
Otherwise looks good.
Example
diff --git a/drivers/media/v4l2-core/v4l2-of.c b/drivers/media/v4l2-core/v4l2-of.c
index aa59639..5c4c9f0 100644
--- a/drivers/media/v4l2-core/v4l2-of.c
+++ b/drivers/media/v4l2-core/v4l2-of.c
@@ -100,6 +100,10 @@ static void v4l2_of_parse_parallel_bus(const struct device_node *node,
if (!of_property_read_u32(node, "data-shift",&v))
bus->data_shift = v;
+ if (!of_property_read_u32(node, "sync-on-green-active",&v))
+ flags |= v ? V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH :
+ V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW;
+
bus->flags = flags;
}
diff --git a/include/media/v4l2-mediabus.h b/include/media/v4l2-mediabus.h
index 83ae07e..d47eb81 100644
--- a/include/media/v4l2-mediabus.h
+++ b/include/media/v4l2-mediabus.h
@@ -40,6 +40,8 @@
#define V4L2_MBUS_FIELD_EVEN_HIGH (1<< 10)
/* FIELD = 1/0 - Field1 (odd)/Field2 (even) */
#define V4L2_MBUS_FIELD_EVEN_LOW (1<< 11)
+#define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH (1<< 12)
+#define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW (1<< 13)
/* Serial flags */
/* How many lanes the client can use */
Thanks,
Sylwester
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