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Commit 8d4da37c authored by Lad, Prabhakar's avatar Lad, Prabhakar Committed by Mauro Carvalho Chehab
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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: default avatarLad, Prabhakar <prabhakar.csengg@gmail.com>
Reviewed-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 3080f8c7

Documentation/devicetree/bindings/media/i2c/mt9p031.txt

0 → 100644
+40 −0
Original line number Diff line number Diff line 
* 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>;

				};

			};

		};

		...

	};

drivers/media/i2c/mt9p031.c

+40 −2
Original line number Diff line number Diff line
@@ -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,