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Commit b2378668 authored by Shawn Guo's avatar Shawn Guo
Browse files

i2c: mxs: add device tree probe support 



Add device tree probe support for i2c-mxs driver.  So far, it's only
been tested on imx28.

Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
Acked-by: default avatarWolfram Sang <w.sang@pengutronix.de>
parent 35d23047

Documentation/devicetree/bindings/i2c/i2c-mxs.txt

0 → 100644
+16 −0
Original line number Diff line number Diff line 
* Freescale MXS Inter IC (I2C) Controller



Required properties:

- compatible: Should be "fsl,<chip>-i2c"

- reg: Should contain registers location and length

- interrupts: Should contain ERROR and DMA interrupts



Examples:



i2c0: i2c@80058000 {

	#address-cells = <1>;

	#size-cells = <0>;

	compatible = "fsl,imx28-i2c";

	reg = <0x80058000 2000>;

	interrupts = <111 68>;

};

drivers/i2c/busses/i2c-mxs.c

+13 −0
Original line number Diff line number Diff line
@@ -27,6 +27,9 @@ 
#include <linux/jiffies.h>

#include <linux/io.h>

#include <linux/pinctrl/consumer.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/of_i2c.h>



#include <mach/common.h>
@@ -371,6 +374,7 @@ static int __devinit mxs_i2c_probe(struct platform_device *pdev) 
	adap->algo = &mxs_i2c_algo;

	adap->dev.parent = dev;

	adap->nr = pdev->id;

	adap->dev.of_node = pdev->dev.of_node;

	i2c_set_adapdata(adap, i2c);

	err = i2c_add_numbered_adapter(adap);

	if (err) {
@@ -380,6 +384,8 @@ static int __devinit mxs_i2c_probe(struct platform_device *pdev) 
		return err;

	}



	of_i2c_register_devices(adap);



	return 0;

}
@@ -399,10 +405,17 @@ static int __devexit mxs_i2c_remove(struct platform_device *pdev) 
	return 0;

}



static const struct of_device_id mxs_i2c_dt_ids[] = {

	{ .compatible = "fsl,imx28-i2c", },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, mxs_i2c_dt_ids);



static struct platform_driver mxs_i2c_driver = {

	.driver = {

		   .name = DRIVER_NAME,

		   .owner = THIS_MODULE,

		   .of_match_table = mxs_i2c_dt_ids,

		   },

	.remove = __devexit_p(mxs_i2c_remove),

};