[patch 2.6.20-rc1 6/6] S3C2410 GPIO wrappers

David Brownell
2006-12-20T21:21:07Z

Arch-neutral GPIO calls for S3C24xx.

From: Philipp Zabel <philipp.zabel@gmail.com>

Index: at91/include/asm-arm/arch-s3c2410/gpio.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ at91/include/asm-arm/arch-s3c2410/gpio.h 2006-12-19 02:05:52.000000000 -0800
@@ -0,0 +1,65 @@
+/*
+ * linux/include/asm-arm/arch-pxa/gpio.h
+ *
+ * S3C2400 GPIO wrappers for arch-neutral GPIO calls
+ *
+ * Written by Philipp Zabel <philipp.zabel@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef __ASM_ARCH_PXA_GPIO_H
+#define __ASM_ARCH_PXA_GPIO_H
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/irqs.h>
+#include <asm/arch/hardware.h>
+
+#include <asm/errno.h>
+
+static inline int gpio_request(unsigned gpio, const char *label)
+{
+ return 0;
+}
+
+static inline void gpio_free(unsigned gpio)
+{
+ return;
+}
+
+static inline int gpio_direction_input(unsigned gpio)
+{
+ s3c2410_gpio_cfgpin(gpio, S3C2410_GPIO_INPUT);
+ return 0;
+}
+
+static inline int gpio_direction_output(unsigned gpio)
+{
+ s3c2410_gpio_cfgpin(gpio, S3C2410_GPIO_OUTPUT);
+ return 0;
+}
+
+#define gpio_get_value(gpio) s3c2410_gpio_getpin(gpio)
+#define gpio_set_value(gpio,value) s3c2410_gpio_setpin(gpio, value)
+
+#include <asm-generic/gpio.h> /* cansleep wrappers */
+
+/* FIXME or maybe s3c2400_gpio_getirq() ... */
+#define gpio_to_irq(gpio) s3c2410_gpio_getirq(gpio)
+
+/* FIXME implement irq_to_gpio() */
+
+#endif