From: Lad, Prabhakar <prabhakar.csengg@gmail.com>

add OF support for the tvp514x driver.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Cc: Hans Verkuil <redacted>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Mauro Carvalho Chehab <redacted>
Cc: Guennadi Liakhovetski <redacted>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Cc: Grant Likely <redacted>
Cc: Rob Herring <redacted>
Cc: Rob Landley <redacted>
Cc: devicetree-discuss@lists.ozlabs.org
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: davinci-linux-open-source@linux.davincidsp.com
---
 Tested on da850-evm.

 RFC v1: https://patchwork.kernel.org/patch/2030061/
 RFC v2: https://patchwork.kernel.org/patch/2061811/

 Changes for current version from RFC v2:
 1: Fixed review comments pointed by Sylwester.

 Changes for v2:
 1: Listed all the compatible property values in the documentation text file.
 2: Removed "-decoder" from compatible property values.
 3: Added a reference to the V4L2 DT bindings documentation to explain
    what the port and endpoint nodes are for.
 4: Fixed some Nits pointed by Laurent.
 5: Removed unnecessary header file includes and sort them alphabetically.

 Changes for v3:
 1: Rebased on patch https://patchwork.kernel.org/patch/2539411/

 Changes for v4:
 1: added missing call for of_node_put().
 2: Rebased the patch on v3.11.

 .../devicetree/bindings/media/i2c/tvp514x.txt      |   45 ++++++++++++++
 drivers/media/i2c/tvp514x.c                        |   62 ++++++++++++++++++--
 2 files changed, 101 insertions(+), 6 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/tvp514x.txt

diff --git a/Documentation/devicetree/bindings/media/i2c/tvp514x.txt b/Documentation/devicetree/bindings/media/i2c/tvp514x.txt
new file mode 100644
index 0000000..cc09424
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/tvp514x.txt

@@ -0,0 +1,45 @@
+* Texas Instruments TVP514x video decoder
+
+The TVP5146/TVP5146m2/TVP5147/TVP5147m1 device is high quality, single-chip
+digital video decoder that digitizes and decodes all popular baseband analog
+video formats into digital video component. The tvp514x decoder supports analog-
+to-digital (A/D) conversion of component RGB and YPbPr signals as well as A/D
+conversion and decoding of NTSC, PAL and SECAM composite and S-video into
+component YCbCr.
+
+Required Properties :
+- compatible : value should be either one among the following
+       (a) "ti,tvp5146" for tvp5146 decoder.
+       (b) "ti,tvp5146m2" for tvp5146m2 decoder.
+       (c) "ti,tvp5147" for tvp5147 decoder.
+       (d) "ti,tvp5147m1" for tvp5147m1 decoder.
+
+- hsync-active: HSYNC Polarity configuration for endpoint.
+
+- vsync-active: VSYNC Polarity configuration for endpoint.
+
+- pclk-sample: Clock polarity of the endpoint.
+
+
+For further reading of port node refer Documentation/devicetree/bindings/media/
+video-interfaces.txt.
+
+Example:
+
+       i2c0@1c22000 {
+               ...
+               ...
+               tvp514x@5c {
+                       compatible = "ti,tvp5146";
+                       reg = <0x5c>;
+
+                       port {
+                               tvp514x_1: endpoint {
+                                       hsync-active = <1>;
+                                       vsync-active = <1>;
+                                       pclk-sample = <0>;
+                               };
+                       };
+               };
+               ...
+       };

diff --git a/drivers/media/i2c/tvp514x.c b/drivers/media/i2c/tvp514x.c
index 7438e01..803f3b8 100644
--- a/drivers/media/i2c/tvp514x.c
+++ b/drivers/media/i2c/tvp514x.c

@@ -38,6 +38,7 @@

 #include <media/v4l2-device.h>
 #include <media/v4l2-common.h>
+#include <media/v4l2-of.h>
 #include <media/v4l2-mediabus.h>
 #include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>

@@ -1055,6 +1056,42 @@ static struct tvp514x_decoder tvp514x_dev = {

 };

+static struct tvp514x_platform_data *
+tvp514x_get_pdata(struct i2c_client *client)
+{
+       struct tvp514x_platform_data *pdata = NULL;
+       struct v4l2_of_endpoint bus_cfg;
+       struct device_node *endpoint;
+       unsigned int flags;
+
+       if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
+               return client->dev.platform_data;
+
+       endpoint = v4l2_of_get_next_endpoint(client->dev.of_node, NULL);
+       if (!endpoint)
+               goto done;
+