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authorVipul Kumar Samar <vipulkumar.samar@st.com>2012-11-26 17:06:51 +0530
committerLinus Walleij <linus.walleij@linaro.org>2012-12-01 17:45:16 +0100
commit86605cfe8c7c166999bc7476b17940c68bf2f8b7 (patch)
tree702c2b7e6c60f261aa353995c1792f1cb2eb6335 /drivers/gpio
parent8618b3b47c4590baf4ef3f241616914f4bb2a8a6 (diff)
downloadlinux-86605cfe8c7c166999bc7476b17940c68bf2f8b7.tar.bz2
gpio: stmpe: Add DT support for stmpe gpio
This patch allows the STMPE GPIO driver to be successfully probed and initialised when Device Tree support is enabled. Bindings are mentioned in Documentation too. Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpio-stmpe.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/gpio/gpio-stmpe.c b/drivers/gpio/gpio-stmpe.c
index dce34727bbf8..522c90ee96e8 100644
--- a/drivers/gpio/gpio-stmpe.c
+++ b/drivers/gpio/gpio-stmpe.c
@@ -12,6 +12,7 @@
#include <linux/gpio.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
+#include <linux/of.h>
#include <linux/mfd/stmpe.h>
/*
@@ -304,6 +305,7 @@ static void stmpe_gpio_irq_remove(struct stmpe_gpio *stmpe_gpio)
static int __devinit stmpe_gpio_probe(struct platform_device *pdev)
{
struct stmpe *stmpe = dev_get_drvdata(pdev->dev.parent);
+ struct device_node *np = pdev->dev.of_node;
struct stmpe_gpio_platform_data *pdata;
struct stmpe_gpio *stmpe_gpio;
int ret;
@@ -321,13 +323,17 @@ static int __devinit stmpe_gpio_probe(struct platform_device *pdev)
stmpe_gpio->dev = &pdev->dev;
stmpe_gpio->stmpe = stmpe;
- stmpe_gpio->norequest_mask = pdata ? pdata->norequest_mask : 0;
-
stmpe_gpio->chip = template_chip;
stmpe_gpio->chip.ngpio = stmpe->num_gpios;
stmpe_gpio->chip.dev = &pdev->dev;
stmpe_gpio->chip.base = pdata ? pdata->gpio_base : -1;
+ if (pdata)
+ stmpe_gpio->norequest_mask = pdata->norequest_mask;
+ else if (np)
+ of_property_read_u32(np, "st,norequest-mask",
+ &stmpe_gpio->norequest_mask);
+
if (irq >= 0)
stmpe_gpio->irq_base = stmpe->irq_base + STMPE_INT_GPIO(0);
else