initial_commit

1 files changed, 67 insertions, 0 deletions

diff --git a/arch/arm/plat-mxc/include/mach/gpio.h b/arch/arm/plat-mxc/include/mach/gpio.h
new file mode 100644
index 00000000..f008e40f
--- /dev/null
+++ b/arch/arm/plat-mxc/include/mach/gpio.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2007-2013 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef __ASM_ARCH_MXC_GPIO_H__
+#define __ASM_ARCH_MXC_GPIO_H__
+
+#include <linux/spinlock.h>
+#include <mach/hardware.h>
+#include <asm-generic/gpio.h>
+
+
+/* There's a off-by-one betweem the gpio bank number and the gpiochip */
+/* range e.g. GPIO_1_5 is gpio 5 under linux */
+#define IMX_GPIO_NR(bank, nr)		(((bank) - 1) * 32 + (nr))
+
+/* use gpiolib dispatchers */
+#define gpio_get_value		__gpio_get_value
+#define gpio_set_value		__gpio_set_value
+#define gpio_cansleep		__gpio_cansleep
+
+#define gpio_to_irq(gpio)	(MXC_GPIO_IRQ_START + (gpio))
+#define irq_to_gpio(irq)	((irq) - MXC_GPIO_IRQ_START)
+
+struct mxc_gpio_port {
+	void __iomem *base;
+	int irq;
+	int irq_high;
+	int virtual_irq_start;
+	struct gpio_chip chip;
+	u32 both_edges;
+	spinlock_t lock;
+	u32 dir;
+};
+
+#define DEFINE_IMX_GPIO_PORT_IRQ_HIGH(soc, _id, _hwid, _irq, _irq_high)	\
+	{								\
+		.chip.label = "gpio-" #_id,				\
+		.irq = _irq,						\
+		.irq_high = _irq_high,					\
+		.base = soc ## _IO_ADDRESS(				\
+				soc ## _GPIO ## _hwid ## _BASE_ADDR),	\
+		.virtual_irq_start = MXC_GPIO_IRQ_START + (_id) * 32,	\
+	}
+
+#define DEFINE_IMX_GPIO_PORT_IRQ(soc, _id, _hwid, _irq)			\
+	DEFINE_IMX_GPIO_PORT_IRQ_HIGH(soc, _id, _hwid, _irq, 0)
+#define DEFINE_IMX_GPIO_PORT(soc, _id, _hwid)				\
+	DEFINE_IMX_GPIO_PORT_IRQ(soc, _id, _hwid, 0)
+
+int mxc_gpio_init(struct mxc_gpio_port*, int);
+
+#endif