*/
#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/gpio.h>
#include <asm/hardware/iop3xx.h>
void gpio_line_config(int line, int direction)
local_irq_restore(flags);
}
EXPORT_SYMBOL(gpio_line_set);
+
+static int iop3xx_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
+{
+ gpio_line_config(gpio, GPIO_IN);
+ return 0;
+}
+
+static int iop3xx_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int level)
+{
+ gpio_line_set(gpio, level);
+ gpio_line_config(gpio, GPIO_OUT);
+ return 0;
+}
+
+static int iop3xx_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
+{
+ return gpio_line_get(gpio);
+}
+
+static void iop3xx_gpio_set_value(struct gpio_chip *chip, unsigned gpio, int value)
+{
+ gpio_line_set(gpio, value);
+}
+
+static struct gpio_chip iop3xx_chip = {
+ .label = "iop3xx",
+ .direction_input = iop3xx_gpio_direction_input,
+ .get = iop3xx_gpio_get_value,
+ .direction_output = iop3xx_gpio_direction_output,
+ .set = iop3xx_gpio_set_value,
+ .base = 0,
+ .ngpio = IOP3XX_N_GPIOS,
+};
+
+static int __init iop3xx_gpio_setup(void)
+{
+ return gpiochip_add(&iop3xx_chip);
+}
+arch_initcall(iop3xx_gpio_setup);
--- /dev/null
+/*
+ * linux/include/asm-arm/hardware/iop3xx-gpio.h
+ *
+ * IOP3xx GPIO wrappers
+ *
+ * Copyright (c) 2008 Arnaud Patard <arnaud.patard@rtp-net.org>
+ * Based on IXP4XX gpio.h file
+ *
+ * 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_ARM_HARDWARE_IOP3XX_GPIO_H
+#define __ASM_ARM_HARDWARE_IOP3XX_GPIO_H
+
+#include <asm/hardware.h>
+#include <asm-generic/gpio.h>
+
+#define IOP3XX_N_GPIOS 8
+
+static inline int gpio_get_value(unsigned gpio)
+{
+ if (gpio > IOP3XX_N_GPIOS)
+ return __gpio_get_value(gpio);
+
+ return gpio_line_get(gpio);
+}
+
+static inline void gpio_set_value(unsigned gpio, int value)
+{
+ if (gpio > IOP3XX_N_GPIOS) {
+ __gpio_set_value(gpio, value);
+ return;
+ }
+ gpio_line_set(gpio, value);
+}
+
+static inline int gpio_cansleep(unsigned gpio)
+{
+ if (gpio < IOP3XX_N_GPIOS)
+ return 0;
+ else
+ return __gpio_cansleep(gpio);
+}
+
+/*
+ * The GPIOs are not generating any interrupt
+ * Note : manuals are not clear about this
+ */
+static inline int gpio_to_irq(int gpio)
+{
+ return -EINVAL;
+}
+
+static inline int irq_to_gpio(int gpio)
+{
+ return -EINVAL;
+}
+
+#endif
+