Commit 8c58d891 authored by Linus Walleij's avatar Linus Walleij
Browse files

i2c: stu300: device tree support 



This adds device tree support for the ST DDC I2C driver known
as "stu300" in the kernel tree.

Reviewed-by: default avatarWolfram Sang <wsa@the-dreams.de>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 978577ea

Documentation/devicetree/bindings/i2c/i2c-st-ddci2c.txt

0 → 100644
+15 −0
Original line number Diff line number Diff line 
ST Microelectronics DDC I2C



Required properties :

- compatible : Must be "st,ddci2c"

- reg: physical base address of the controller and length of memory mapped

     region.

- interrupts: interrupt number to the cpu.

- #address-cells = <1>;

- #size-cells = <0>;



Optional properties:

- Child nodes conforming to i2c bus binding



Examples :

drivers/i2c/busses/i2c-stu300.c

+12 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/clk.h>

#include <linux/io.h>

#include <linux/slab.h>

#include <linux/of_i2c.h>



/* the name of this kernel module */

#define NAME "stu300"
@@ -923,6 +924,7 @@ stu300_probe(struct platform_device *pdev) 
	adap->nr = bus_nr;

	adap->algo = &stu300_algo;

	adap->dev.parent = &pdev->dev;

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

	i2c_set_adapdata(adap, dev);



	/* i2c device drivers may be active on return from add_adapter() */
@@ -934,6 +936,10 @@ stu300_probe(struct platform_device *pdev) 
	}



	platform_set_drvdata(pdev, dev);

	dev_info(&pdev->dev, "ST DDC I2C @ %p, irq %d\n",

		 dev->virtbase, dev->irq);

	of_i2c_register_devices(adap);



	return 0;

}
@@ -978,11 +984,17 @@ stu300_remove(struct platform_device *pdev) 
	return 0;

}



static const struct of_device_id stu300_dt_match[] = {

	{ .compatible = "st,ddci2c" },

	{},

};



static struct platform_driver stu300_i2c_driver = {

	.driver = {

		.name	= NAME,

		.owner	= THIS_MODULE,

		.pm	= STU300_I2C_PM,

		.of_match_table = stu300_dt_match,

	},

	.remove		= __exit_p(stu300_remove),