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authorStuart Longland <stuartl@vrt.com.au>2014-08-08 14:20:20 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-08 15:57:20 -0700
commitdb04d6284e2a626791e959dc71e922e8570440b6 (patch)
treefef0fb647928560bc0edf87c33eade6af4cf273b /drivers/rtc/rtc-isl12022.c
parentede3e9d47cca565d96613bea9213eccf91c7a2a7 (diff)
downloadlinux-db04d6284e2a626791e959dc71e922e8570440b6.tar.bz2
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: Stuart Longland <stuartl@vrt.com.au> Cc: Roman Fietze <roman.fietze@telemotive.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rtc/rtc-isl12022.c')
-rw-r--r--drivers/rtc/rtc-isl12022.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-isl12022.c b/drivers/rtc/rtc-isl12022.c
index 03b891129428..aa55f081c505 100644
--- a/drivers/rtc/rtc-isl12022.c
+++ b/drivers/rtc/rtc-isl12022.c
@@ -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,