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[media] media: i2c: tvp7002: add OF support

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add OF support for the tvp7002 driver.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Lad, Prabhakar
2013-08-11 02:25:21 -03:00
committed by Mauro Carvalho Chehab
parent d1d70aa69d
commit c0d9644fa0
2 changed files with 113 additions and 7 deletions
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67
drivers/media/i2c/tvp7002.c
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@@ -35,6 +35,8 @@
#include <media/v4l2-device.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-of.h>
#include "tvp7002_reg.h"
MODULE_DESCRIPTION("TI TVP7002 Video and Graphics Digitizer driver");
@@ -943,6 +945,48 @@ static const struct v4l2_subdev_ops tvp7002_ops = {
.pad = &tvp7002_pad_ops,
};
static struct tvp7002_config *
tvp7002_get_pdata(struct i2c_client *client)
{
struct v4l2_of_endpoint bus_cfg;
struct tvp7002_config *pdata;
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)
return NULL;
pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
goto done;
v4l2_of_parse_endpoint(endpoint, &bus_cfg);
flags = bus_cfg.bus.parallel.flags;
if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
pdata->hs_polarity = 1;
if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
pdata->vs_polarity = 1;
if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
pdata->clk_polarity = 1;
if (flags & V4L2_MBUS_FIELD_EVEN_HIGH)
pdata->fid_polarity = 1;
if (flags & V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH)
pdata->sog_polarity = 1;
done:
of_node_put(endpoint);
return pdata;
}
/*
* tvp7002_probe - Probe a TVP7002 device
* @c: ptr to i2c_client struct
@@ -954,32 +998,32 @@ static const struct v4l2_subdev_ops tvp7002_ops = {
*/
static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
{
struct tvp7002_config *pdata = tvp7002_get_pdata(c);
struct v4l2_subdev *sd;
struct tvp7002 *device;
struct v4l2_dv_timings timings;
int polarity_a;
int polarity_b;
u8 revision;
int error;
if (pdata == NULL) {
dev_err(&c->dev, "No platform data\n");
return -EINVAL;
}
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(c->adapter,
I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
return -EIO;
if (!c->dev.platform_data) {
v4l_err(c, "No platform data!!\n");
return -ENODEV;
}
device = devm_kzalloc(&c->dev, sizeof(struct tvp7002), GFP_KERNEL);
if (!device)
return -ENOMEM;
sd = &device->sd;
device->pdata = c->dev.platform_data;
device->pdata = pdata;
device->current_timings = tvp7002_timings;
/* Tell v4l2 the device is ready */
@@ -1084,9 +1128,18 @@ static const struct i2c_device_id tvp7002_id[] = {
};
MODULE_DEVICE_TABLE(i2c, tvp7002_id);
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id tvp7002_of_match[] = {
{ .compatible = "ti,tvp7002", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, tvp7002_of_match);
#endif
/* I2C driver data */
static struct i2c_driver tvp7002_driver = {
.driver = {
.of_match_table = of_match_ptr(tvp7002_of_match),
.owner = THIS_MODULE,
.name = TVP7002_MODULE_NAME,
},