[media] media: i2c: tvp514x: add OF support
add OF support for the tvp514x driver. Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Hans Verkuil <hans.verkuil@cisco.com> Cc: Mauro Carvalho Chehab <mchehab@redhat.com> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: Sakari Ailus <sakari.ailus@iki.fi> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Rob Landley <rob@landley.net> 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 Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Lad, Prabhakar
Mauro Carvalho Chehab
parent
379d2cf4b5
commit
b610b5928d
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@ -0,0 +1,44 @@
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* Texas Instruments TVP514x video decoder
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The TVP5146/TVP5146m2/TVP5147/TVP5147m1 device is high quality, single-chip
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digital video decoder that digitizes and decodes all popular baseband analog
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video formats into digital video component. The tvp514x decoder supports analog-
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to-digital (A/D) conversion of component RGB and YPbPr signals as well as A/D
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conversion and decoding of NTSC, PAL and SECAM composite and S-video into
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component YCbCr.
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Required Properties :
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- compatible : value should be either one among the following
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(a) "ti,tvp5146" for tvp5146 decoder.
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(b) "ti,tvp5146m2" for tvp5146m2 decoder.
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(c) "ti,tvp5147" for tvp5147 decoder.
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(d) "ti,tvp5147m1" for tvp5147m1 decoder.
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- hsync-active: HSYNC Polarity configuration for endpoint.
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- vsync-active: VSYNC Polarity configuration for endpoint.
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- pclk-sample: Clock polarity of the endpoint.
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For further reading on port node refer to Documentation/devicetree/bindings/
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media/video-interfaces.txt.
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Example:
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i2c0@1c22000 {
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...
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...
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tvp514x@5c {
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compatible = "ti,tvp5146";
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reg = <0x5c>;
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port {
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tvp514x_1: endpoint {
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hsync-active = <1>;
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vsync-active = <1>;
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pclk-sample = <0>;
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};
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};
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};
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...
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};
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@ -39,6 +39,7 @@
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#include <media/v4l2-device.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-mediabus.h>
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#include <media/v4l2-of.h>
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#include <media/v4l2-ctrls.h>
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#include <media/tvp514x.h>
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#include <media/media-entity.h>
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@ -1056,6 +1057,42 @@ static struct tvp514x_decoder tvp514x_dev = {
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};
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static struct tvp514x_platform_data *
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tvp514x_get_pdata(struct i2c_client *client)
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{
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struct tvp514x_platform_data *pdata;
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struct v4l2_of_endpoint bus_cfg;
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struct device_node *endpoint;
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unsigned int flags;
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if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
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return client->dev.platform_data;
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endpoint = v4l2_of_get_next_endpoint(client->dev.of_node, NULL);
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if (!endpoint)
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return NULL;
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pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
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if (!pdata)
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goto done;
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v4l2_of_parse_endpoint(endpoint, &bus_cfg);
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flags = bus_cfg.bus.parallel.flags;
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if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
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pdata->hs_polarity = 1;
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if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
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pdata->vs_polarity = 1;
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if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
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pdata->clk_polarity = 1;
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done:
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of_node_put(endpoint);
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return pdata;
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}
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/**
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* tvp514x_probe() - decoder driver i2c probe handler
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* @client: i2c driver client device structure
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@ -1067,19 +1104,20 @@ static struct tvp514x_decoder tvp514x_dev = {
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static int
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tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id)
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{
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struct tvp514x_platform_data *pdata = tvp514x_get_pdata(client);
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struct tvp514x_decoder *decoder;
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struct v4l2_subdev *sd;
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int ret;
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if (pdata == NULL) {
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dev_err(&client->dev, "No platform data\n");
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return -EINVAL;
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}
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/* Check if the adapter supports the needed features */
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
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return -EIO;
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if (!client->dev.platform_data) {
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v4l2_err(client, "No platform data!!\n");
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return -ENODEV;
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}
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decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
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if (!decoder)
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return -ENOMEM;
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@ -1091,7 +1129,7 @@ tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id)
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sizeof(tvp514x_reg_list_default));
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/* Copy board specific information here */
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decoder->pdata = client->dev.platform_data;
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decoder->pdata = pdata;
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/**
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* Fetch platform specific data, and configure the
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@ -1231,8 +1269,20 @@ static const struct i2c_device_id tvp514x_id[] = {
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MODULE_DEVICE_TABLE(i2c, tvp514x_id);
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#if IS_ENABLED(CONFIG_OF)
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static const struct of_device_id tvp514x_of_match[] = {
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{ .compatible = "ti,tvp5146", },
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{ .compatible = "ti,tvp5146m2", },
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{ .compatible = "ti,tvp5147", },
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{ .compatible = "ti,tvp5147m1", },
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{ /* sentinel */ },
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};
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MODULE_DEVICE_TABLE(of, tvp514x_of_match);
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#endif
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static struct i2c_driver tvp514x_driver = {
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.driver = {
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.of_match_table = of_match_ptr(tvp514x_of_match),
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.owner = THIS_MODULE,
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.name = TVP514X_MODULE_NAME,
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},
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