leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

gpio: Add GPIO driver for Marvell SoC Armada100

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

Signed-off-by: Ajay Bhargav <ajay.bhargav@einfochips.com>
This commit is contained in:
Ajay Bhargav 2011-08-22 17:57:38 +05:30 committed by Albert ARIBAUD
parent 0c44229859
commit 3cf97f4543
1 changed files with 48 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
arch/arm/include/asm/arch-armada100/gpio.h Normal file
View File

@ -0,0 +1,48 @@
/*
* (C) Copyright 2011
* eInfochips Ltd. <www.einfochips.com>
* Written-by: Ajay Bhargav <ajay.bhargav@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>
#define GPIO_HIGH 1
#define GPIO_LOW 0
#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)
{
const unsigned int offset[4] = {0, 4, 8, 0x100};
/* gpio register bank offset - refer Appendix A.36 */
return (struct gpio_reg *)(ARMD1_GPIO_BASE + offset[bank]);
}
#endif /* _ASM_ARCH_GPIO_H */