[PATCH RFC FINAL v5] media: OF: add "sync-on-green-active" property
From: Prabhakar Lad <prabhakar.csengg@gmail.com>
Date: 2013-07-17 15:47:22
Also in:
linux-media, lkml
Subsystem:
media input infrastructure (v4l/dvb), open firmware and flattened device tree bindings, the rest · Maintainers:
Mauro Carvalho Chehab, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
This patch adds 'sync-on-green-active' property as part
of endpoint property.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
---
Changes for v5:
1: Changed description for sync-on-green-active property in
documentation file as suggested by Sylwester.
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 | 2 ++
drivers/media/v4l2-core/v4l2-of.c | 4 ++++
include/media/v4l2-mediabus.h | 2 ++
3 files changed, 8 insertions(+)
diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt b/Documentation/devicetree/bindings/media/video-interfaces.txt
index e022d2d..ce719f8 100644
--- a/Documentation/devicetree/bindings/media/video-interfaces.txt
+++ b/Documentation/devicetree/bindings/media/video-interfaces.txt@@ -88,6 +88,8 @@ Optional endpoint properties - field-even-active: field signal level during the even field data transmission. - pclk-sample: sample data on rising (1) or falling (0) edge of the pixel clock signal. +- sync-on-green-active: active state of Sync-on-green (SoG) signal, 0/1 for + LOW/HIGH respectively. - data-lanes: an array of physical data lane indexes. Position of an entry determines the logical lane number, while the value of an entry indicates physical lane, e.g. for 2-lane MIPI CSI-2 bus we could have
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 */
--
1.7.9.5