ARM: SAMSUNG: Update the name of regarding Samsung GPIO

According to gpio-samsung.c, this patch updates the name of
regarding Samsung GPIO. Basically the samsung_xxx prefix is
used in gpio-samsung.c instead of s3c_xxx, because unified
name can reduce its complexity.

Note: some s3c_xxx stil remains because it is used widely.
It will be updated next time.

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 98 insertions, 0 deletions

diff --git a/arch/arm/plat-samsung/include/plat/gpio-fns.h b/arch/arm/plat-samsung/include/plat/gpio-fns.h
new file mode 100644
index 000000000000..bab139201761
--- /dev/null
+++ b/arch/arm/plat-samsung/include/plat/gpio-fns.h
@@ -0,0 +1,98 @@
+/* arch/arm/mach-s3c2410/include/mach/gpio-fns.h
+ *
+ * Copyright (c) 2003-2009 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C2410 - hardware
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#ifndef __MACH_GPIO_FNS_H
+#define __MACH_GPIO_FNS_H __FILE__
+
+/* These functions are in the to-be-removed category and it is strongly
+ * encouraged not to use these in new code. They will be marked deprecated
+ * very soon.
+ *
+ * Most of the functionality can be either replaced by the gpiocfg calls
+ * for the s3c platform or by the generic GPIOlib API.
+ *
+ * As of 2.6.35-rc, these will be removed, with the few drivers using them
+ * either replaced or given a wrapper until the calls can be removed.
+*/
+
+#include <plat/gpio-cfg.h>
+
+static inline void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int cfg)
+{
+        /* 1:1 mapping between cfgpin and setcfg calls at the moment */
+        s3c_gpio_cfgpin(pin, cfg);
+}
+
+/* external functions for GPIO support
+ *
+ * These allow various different clients to access the same GPIO
+ * registers without conflicting. If your driver only owns the entire
+ * GPIO register, then it is safe to ioremap/__raw_{read|write} to it.
+*/
+
+extern unsigned int s3c2410_gpio_getcfg(unsigned int pin);
+
+/* s3c2410_gpio_getirq
+ *
+ * turn the given pin number into the corresponding IRQ number
+ *
+ * returns:
+ *      < 0 = no interrupt for this pin
+ *      >=0 = interrupt number for the pin
+*/
+
+extern int s3c2410_gpio_getirq(unsigned int pin);
+
+/* s3c2410_gpio_irqfilter
+ *
+ * set the irq filtering on the given pin
+ *
+ * on = 0 => disable filtering
+ *      1 => enable filtering
+ *
+ * config = S3C2410_EINTFLT_PCLK or S3C2410_EINTFLT_EXTCLK orred with
+ *          width of filter (0 through 63)
+ *
+ *
+*/
+
+extern int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on,
+                                  unsigned int config);
+
+/* s3c2410_gpio_pullup
+ *
+ * This call should be replaced with s3c_gpio_setpull().
+ *
+ * As a note, there is currently no distinction between pull-up and pull-down
+ * in the s3c24xx series devices with only an on/off configuration.
+ */
+
+/* s3c2410_gpio_pullup
+ *
+ * configure the pull-up control on the given pin
+ *
+ * to = 1 => disable the pull-up
+ *      0 => enable the pull-up
+ *
+ * eg;
+ *
+ *   s3c2410_gpio_pullup(S3C2410_GPB(0), 0);
+ *   s3c2410_gpio_pullup(S3C2410_GPE(8), 0);
+*/
+
+extern void s3c2410_gpio_pullup(unsigned int pin, unsigned int to);
+
+extern void s3c2410_gpio_setpin(unsigned int pin, unsigned int to);
+
+extern unsigned int s3c2410_gpio_getpin(unsigned int pin);
+
+#endif /* __MACH_GPIO_FNS_H */