[ARM] 5160/1: IOP3XX: gpio/gpiolib support

This patch brings support for gpio/gpiolib framework to Intel IOP3xx
platforms.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 73 insertions, 0 deletions

diff --git a/include/asm-arm/hardware/iop3xx-gpio.h b/include/asm-arm/hardware/iop3xx-gpio.h
new file mode 100644
index 00000000000..0c9331f9ac2
--- /dev/null
+++ b/include/asm-arm/hardware/iop3xx-gpio.h
@@ -0,0 +1,73 @@
+/*
+ * 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
+