[U-Boot] [PATCH v3 2/2] gpio: Add GPIO driver for Marvell SoC Armada100

[Ajay Bhargav]

This patch adds support for generic GPIO driver framework for Marvell
SoC Armada100.

Signed-off-by: Ajay Bhargav <ajay.bhargav at einfochips.com>
---
 arch/arm/include/asm/arch-armada100/armada100.h |    4 ++
 arch/arm/include/asm/arch-armada100/gpio.h      |   54 +++++++++++++++++++++++
 2 files changed, 58 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/include/asm/arch-armada100/gpio.h

diff --git a/arch/arm/include/asm/arch-armada100/armada100.h b/arch/arm/include/asm/arch-armada100/armada100.h
index d5d125a..aad3ed1 100644
--- a/arch/arm/include/asm/arch-armada100/armada100.h
+++ b/arch/arm/include/asm/arch-armada100/armada100.h
@@ -59,6 +59,10 @@
 #define ARMD1_MPMU_BASE		0xD4050000
 #define ARMD1_APMU_BASE		0xD4282800
 #define ARMD1_CPU_BASE		0xD4282C00
+#define ARMD1_GPIO0_BASE	0xD4019000
+#define ARMD1_GPIO1_BASE	0xD4019004
+#define ARMD1_GPIO2_BASE	0xD4019008
+#define ARMD1_GPIO3_BASE	0xD4019100
 
 /*
  * Main Power Management (MPMU) Registers
diff --git a/arch/arm/include/asm/arch-armada100/gpio.h b/arch/arm/include/asm/arch-armada100/gpio.h
new file mode 100644
index 0000000..bd7d21a
--- /dev/null
+++ b/arch/arm/include/asm/arch-armada100/gpio.h
@@ -0,0 +1,54 @@
+/*
+ * (C) Copyright 2011
+ * eInfochips Ltd. <www.einfochips.com>
+ * Written-by: Ajay Bhargav <ajay.bhargav at einfochips.com>
+ *
+ * (C) Copyright 2010
+ * Marvell Semiconductor <www.marvell.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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_GPIO_H
+#define _ASM_ARCH_GPIO_H
+
+#include <asm/types.h>
+#include <asm/arch/armada100.h>
+#include <mvgpio.h>
+
+#define GPIO_TO_REG(gp)		(gp >> 5)
+#define GPIO_TO_BIT(gp)		(1 << (gp & 0x1F))
+#define GPIO_VAL(gp, val)	((val >> (gp & 0x1F)) & 0x01)
+
+static inline void *get_gpio_base(int bank)
+{
+	switch (bank) {
+	case 0:
+		return (struct gpio_reg *)ARMD1_GPIO0_BASE;
+	case 1:
+		return (struct gpio_reg *)ARMD1_GPIO1_BASE;
+	case 2:
+		return (struct gpio_reg *)ARMD1_GPIO2_BASE;
+	case 3:
+		return (struct gpio_reg *)ARMD1_GPIO3_BASE;
+	}
+	return 0;
+}
+
+#endif /* _ASM_ARCH_GPIO_H */
-- 
1.7.0.4