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Commit db04d628 authored by Stuart Longland's avatar Stuart Longland Committed by Linus Torvalds
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drivers/rtc/rtc-isl12022.c: device tree support 



Add support for configuring the ISL12022 real-time clock via the Device
tree framework.  This is based on what I've seen in the related ISL12057
driver, it has been tested and works on a Technologic Systems TS-7670
device which uses a ISL12020 RTC device, my device tree looks like this:

	apbx@80040000 {
		i2c0: i2c@80058000 {
			pinctrl-names = "default";
			pinctrl-0 = <&i2c0_pins_a>;
			clock-frequency = <400000>;
			status = "okay";

			isl12022@0x6f {
				compatible = "isl,isl12022";
				reg = <0x6f>;
			};
		};
		... etc
	};

Signed-off-by: default avatarStuart Longland <stuartl@vrt.com.au>
Cc: Roman Fietze <roman.fietze@telemotive.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ede3e9d4

drivers/rtc/rtc-isl12022.c

+12 −0
Original line number Diff line number Diff line
@@ -17,6 +17,8 @@ 
#include <linux/slab.h>

#include <linux/module.h>

#include <linux/err.h>

#include <linux/of.h>

#include <linux/of_device.h>



#define DRV_VERSION "0.1"
@@ -271,6 +273,13 @@ static int isl12022_probe(struct i2c_client *client, 
	return PTR_ERR_OR_ZERO(isl12022->rtc);

}



#ifdef CONFIG_OF

static struct of_device_id isl12022_dt_match[] = {

	{ .compatible = "isl,isl12022" },

	{ },

};

#endif



static const struct i2c_device_id isl12022_id[] = {

	{ "isl12022", 0 },

	{ }
@@ -280,6 +289,9 @@ MODULE_DEVICE_TABLE(i2c, isl12022_id); 
static struct i2c_driver isl12022_driver = {

	.driver		= {

		.name	= "rtc-isl12022",

#ifdef CONFIG_OF

		.of_match_table = of_match_ptr(isl12022_dt_match),

#endif

	},

	.probe		= isl12022_probe,

	.id_table	= isl12022_id,