From: Ben Dooks <ben-li...@fluff.org>
Add s3c_gpio_cfgpin_range() to configure a range of pins to the given
value. This is useful for a number of blocks where the pins are in order
and saves multiple calls to s3c_gpio_cfgpin().
Signed-off-by: Ben Dooks <ben-li...@fluff.org>
Signed-off-by: Kukjin Kim <kgene....@samsung.com>
---
arch/arm/plat-samsung/gpio-config.c | 15 +++++++++++++++
arch/arm/plat-samsung/include/plat/gpio-cfg.h | 13 +++++++++++++
2 files changed, 28 insertions(+), 0 deletions(-)
diff --git a/arch/arm/plat-samsung/gpio-config.c
b/arch/arm/plat-samsung/gpio-config.c
index e3d41ea..fa180dc 100644
--- a/arch/arm/plat-samsung/gpio-config.c
+++ b/arch/arm/plat-samsung/gpio-config.c
@@ -41,6 +41,21 @@ int s3c_gpio_cfgpin(unsigned int pin, unsigned int config)
}
EXPORT_SYMBOL(s3c_gpio_cfgpin);
+int s3c_gpio_cfgpin_range(unsigned int start, unsigned int nr,
+ unsigned int cfg)
+{
+ int ret;
+
+ for (; nr > 0; nr--, start++) {
+ ret = s3c_gpio_cfgpin(start, cfg);
+ if (ret != 0)
+ return ret;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(s3c_gpio_cfgpin_range);
+
unsigned s3c_gpio_getcfg(unsigned int pin)
{
struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
diff --git a/arch/arm/plat-samsung/include/plat/gpio-cfg.h
b/arch/arm/plat-samsung/include/plat/gpio-cfg.h
index 5b43b95..5fa3d89 100644
--- a/arch/arm/plat-samsung/include/plat/gpio-cfg.h
+++ b/arch/arm/plat-samsung/include/plat/gpio-cfg.h
@@ -108,6 +108,19 @@ extern int s3c_gpio_cfgpin(unsigned int pin, unsigned int
to);
*/
extern unsigned s3c_gpio_getcfg(unsigned int pin);
+/**
+ * s3c_gpio_cfgpin_range() - Change the GPIO function for configuring pin range
+ * @start: The pin number to start at
+ * @nr: The number of pins to configure from @start.
+ * @cfg: The configuration for the pin's function
+ *
+ * Call s3c_gpio_cfgpin() for the @nr pins starting at @start.
+ *
+ * @sa s3c_gpio_cfgpin.
+ */
+extern int s3c_gpio_cfgpin_range(unsigned int start, unsigned int nr,
+ unsigned int cfg);
+
/* Define values for the pull-{up,down} available for each gpio pin.
*
* These values control the state of the weak pull-{up,down} resistors
--
1.6.2.5
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