diff options
Diffstat (limited to 'patches.tizen/0196-iio-ak8975-Add-support-for-gpios-DT-property.patch')
| -rw-r--r-- | patches.tizen/0196-iio-ak8975-Add-support-for-gpios-DT-property.patch | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/patches.tizen/0196-iio-ak8975-Add-support-for-gpios-DT-property.patch b/patches.tizen/0196-iio-ak8975-Add-support-for-gpios-DT-property.patch new file mode 100644 index 00000000000..e4f06c661a4 --- /dev/null +++ b/patches.tizen/0196-iio-ak8975-Add-support-for-gpios-DT-property.patch @@ -0,0 +1,76 @@ +From 784caada8f244c70a5988aa58033f3e8fdc522e4 Mon Sep 17 00:00:00 2001 +From: Jacek Anaszewski <j.anaszewski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org> +Date: Tue, 7 May 2013 12:41:38 +0200 +Subject: [PATCH 0196/1302] iio:ak8975 Add support for gpios DT property + +Add support for parsing 'gpios' property when initializing +from oftree. +This patch adds also the binding documentation file. + +Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com> +Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> +Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> +--- + .../devicetree/bindings/iio/magnetometer/ak8975.txt | 18 ++++++++++++++++++ + drivers/iio/magnetometer/ak8975.c | 12 +++++++++--- + 2 files changed, 27 insertions(+), 3 deletions(-) + create mode 100644 Documentation/devicetree/bindings/iio/magnetometer/ak8975.txt + +diff --git a/Documentation/devicetree/bindings/iio/magnetometer/ak8975.txt b/Documentation/devicetree/bindings/iio/magnetometer/ak8975.txt +new file mode 100644 +index 0000000..011679f +--- /dev/null ++++ b/Documentation/devicetree/bindings/iio/magnetometer/ak8975.txt +@@ -0,0 +1,18 @@ ++* AsahiKASEI AK8975 magnetometer sensor ++ ++Required properties: ++ ++ - compatible : should be "asahi-kasei,ak8975" ++ - reg : the I2C address of the magnetometer ++ ++Optional properties: ++ ++ - gpios : should be device tree identifier of the magnetometer DRDY pin ++ ++Example: ++ ++ak8975@0c { ++ compatible = "asahi-kasei,ak8975"; ++ reg = <0x0c>; ++ gpios = <&gpj0 7 0>; ++}; +diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c +index af6c320..d75cc23 100644 +--- a/drivers/iio/magnetometer/ak8975.c ++++ b/drivers/iio/magnetometer/ak8975.c +@@ -29,6 +29,7 @@ + #include <linux/delay.h> + + #include <linux/gpio.h> ++#include <linux/of_gpio.h> + + #include <linux/iio/iio.h> + #include <linux/iio/sysfs.h> +@@ -384,10 +385,15 @@ static int ak8975_probe(struct i2c_client *client, + int err; + + /* Grab and set up the supplied GPIO. */ +- if (client->dev.platform_data == NULL) +- eoc_gpio = -1; +- else ++ if (client->dev.platform_data) + eoc_gpio = *(int *)(client->dev.platform_data); ++ else if (client->dev.of_node) ++ eoc_gpio = of_get_gpio(client->dev.of_node, 0); ++ else ++ eoc_gpio = -1; ++ ++ if (eoc_gpio == -EPROBE_DEFER) ++ return -EPROBE_DEFER; + + /* We may not have a GPIO based IRQ to scan, that is fine, we will + poll if so */ +-- +1.8.3.2 + |