ARM: SAMSUNG: Add s3c_gpio_cfgall_range() function

Add a function to configure a range of GPIOs function and
pull in one go, mainly for the SDHCI and framebuffer helpers
which tend to do this.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
[kgene.kim@samsung.com: Fix small comments]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

diff --git a/arch/arm/plat-samsung/gpio-config.c b/arch/arm/plat-samsung/gpio-config.c
index fa180dcc41ce1e50df970f693d2735a7770c06a3..8a372110a850e7b93be617f06454066c1a8db986 100644 (file)
--- a/arch/arm/plat-samsung/gpio-config.c
+++ b/arch/arm/plat-samsung/gpio-config.c
@@ -56,6 +56,22 @@ int s3c_gpio_cfgpin_range(unsigned int start, unsigned int nr,
 }
 EXPORT_SYMBOL_GPL(s3c_gpio_cfgpin_range);
 
+int s3c_gpio_cfgall_range(unsigned int start, unsigned int nr,
+                         unsigned int cfg, s3c_gpio_pull_t pull)
+{
+       int ret;
+
+       for (; nr > 0; nr--, start++) {
+               s3c_gpio_setpull(start, pull);
+               ret = s3c_gpio_cfgpin(start, cfg);
+               if (ret != 0)
+                       return ret;
+       }
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(s3c_gpio_cfgall_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 6e117dc2709bf429661d0a8eb6de0ebcdb07d9f2..c84defd29502bc84cf21bac33fc742b86a10576b 100644 (file)
--- a/arch/arm/plat-samsung/include/plat/gpio-cfg.h
+++ b/arch/arm/plat-samsung/include/plat/gpio-cfg.h
@@ -153,6 +153,25 @@ extern int s3c_gpio_setpull(unsigned int pin, s3c_gpio_pull_t pull);
 */
 extern s3c_gpio_pull_t s3c_gpio_getpull(unsigned int pin);
 
+/* configure `all` aspects of an gpio */
+
+/**
+ * s3c_gpio_cfgall_range() - configure range of gpio functtion and pull.
+ * @start: The gpio number to start at.
+ * @nr: The number of gpio to configure from @start.
+ * @cfg: The configuration to use
+ * @pull: The pull setting to use.
+ *
+ * Run s3c_gpio_cfgpin() and s3c_gpio_setpull() over the gpio range starting
+ * @gpio and running for @size.
+ *
+ * @sa s3c_gpio_cfgpin
+ * @sa s3c_gpio_setpull
+ * @sa s3c_gpio_cfgpin_range
+ */
+extern int s3c_gpio_cfgall_range(unsigned int start, unsigned int nr,
+                                unsigned int cfg, s3c_gpio_pull_t pull);
+
 /* Define values for the drvstr available for each gpio pin.
  *
  * These values control the value of the output signal driver strength,