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[media] media: i2c: mt9p031: add OF support 

Add OF support for the mt9p031 sensor driver.
Alongside this patch sorts the header inclusion alphabetically.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Lad, Prabhakar 2013-05-26 10:08:54 -03:00 committed by Mauro Carvalho Chehab
parent 3080f8c77f
commit 8d4da37c30
2 changed files with 80 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
Documentation/devicetree/bindings/media/i2c/mt9p031.txt Normal file
View File

@ -0,0 +1,40 @@
* Aptina 1/2.5-Inch 5Mp CMOS Digital Image Sensor
The Aptina MT9P031 is a 1/2.5-inch CMOS active pixel digital image sensor with
an active array size of 2592H x 1944V. It is programmable through a simple
two-wire serial interface.
Required Properties:
- compatible: value should be either one among the following
(a) "aptina,mt9p031" for mt9p031 sensor
(b) "aptina,mt9p031m" for mt9p031m sensor
- input-clock-frequency: Input clock frequency.
- pixel-clock-frequency: Pixel clock frequency.
Optional Properties:
- reset-gpios: Chip reset GPIO
For further reading on port node refer to
Documentation/devicetree/bindings/media/video-interfaces.txt.
Example:
i2c0@1c22000 {
...
...
mt9p031@5d {
compatible = "aptina,mt9p031";
reg = <0x5d>;
reset-gpios = <&gpio3 30 0>;
port {
mt9p031_1: endpoint {
input-clock-frequency = <6000000>;
pixel-clock-frequency = <96000000>;
};
};
};
...
};

42
drivers/media/i2c/mt9p031.c
View File

@ -16,9 +16,10 @@
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/gpio.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/log2.h>
#include <linux/module.h>
#include <linux/of_gpio.h>
#include <linux/pm.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
@ -27,6 +28,7 @@
#include <media/mt9p031.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-of.h>
#include <media/v4l2-subdev.h>
#include "aptina-pll.h"
@ -927,10 +929,36 @@ static const struct v4l2_subdev_internal_ops mt9p031_subdev_internal_ops = {
* Driver initialization and probing
*/
static struct mt9p031_platform_data *
mt9p031_get_pdata(struct i2c_client *client)
{
struct mt9p031_platform_data *pdata;
struct device_node *np;
if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
return client->dev.platform_data;
np = v4l2_of_get_next_endpoint(client->dev.of_node, NULL);
if (!np)
return NULL;
pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
goto done;
pdata->reset = of_get_named_gpio(client->dev.of_node, "reset-gpios", 0);
of_property_read_u32(np, "input-clock-frequency", &pdata->ext_freq);
of_property_read_u32(np, "pixel-clock-frequency", &pdata->target_freq);
done:
of_node_put(np);
return pdata;
}
static int mt9p031_probe(struct i2c_client *client,
const struct i2c_device_id *did)
{
struct mt9p031_platform_data *pdata = client->dev.platform_data;
struct mt9p031_platform_data *pdata = mt9p031_get_pdata(client);
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
struct mt9p031 *mt9p031;
unsigned int i;
@ -1069,8 +1097,18 @@ static const struct i2c_device_id mt9p031_id[] = {
};
MODULE_DEVICE_TABLE(i2c, mt9p031_id);
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id mt9p031_of_match[] = {
{ .compatible = "aptina,mt9p031", },
{ .compatible = "aptina,mt9p031m", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, mt9p031_of_match);
#endif
static struct i2c_driver mt9p031_i2c_driver = {
.driver = {
.of_match_table = of_match_ptr(mt9p031_of_match),
.name = "mt9p031",
},
.probe = mt9p031_probe,