diff options
Diffstat (limited to 'target/linux/s3c24xx/files-2.6.30/arch/arm/mach-s3c2442/gta02-shadow.c')
-rw-r--r-- | target/linux/s3c24xx/files-2.6.30/arch/arm/mach-s3c2442/gta02-shadow.c | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/target/linux/s3c24xx/files-2.6.30/arch/arm/mach-s3c2442/gta02-shadow.c b/target/linux/s3c24xx/files-2.6.30/arch/arm/mach-s3c2442/gta02-shadow.c deleted file mode 100644 index c65304ae19..0000000000 --- a/target/linux/s3c24xx/files-2.6.30/arch/arm/mach-s3c2442/gta02-shadow.c +++ /dev/null @@ -1,86 +0,0 @@ -/* - * Common utility code for GTA02 - * - * Copyright (C) 2008 by Openmoko, Inc. - * Author: Holger Hans Peter Freyther <freyther@openmoko.org> - * All rights reserved. - * - * 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 - * - */ - -#include <linux/module.h> -#include <linux/io.h> -#include <linux/irq.h> - -#include <asm/gpio.h> -#include <mach/regs-gpio.h> -#include <linux/gta02-shadow.h> - -/** - * Shadow GPIO bank B handling. For the LEDs we need to keep track of the state - * in software. The s3c2410_gpio_setpin must not be used for GPIOs on bank B - */ -static unsigned long gpb_mask; -static unsigned long gpb_state; - -void gta02_gpb_add_shadow_gpio(unsigned int gpio) -{ - unsigned long offset = S3C2410_GPIO_OFFSET(gpio); - unsigned long flags; - - local_irq_save(flags); - gpb_mask |= 1L << offset; - local_irq_restore(flags); -} -EXPORT_SYMBOL(gta02_gpb_add_shadow_gpio); - -static void set_shadow_gpio(unsigned long offset, unsigned int value) -{ - unsigned long state = value != 0; - - gpb_state &= ~(1L << offset); - gpb_state |= state << offset; -} - -void gta02_gpb_setpin(unsigned int pin, unsigned to) -{ - void __iomem *base = S3C24XX_GPIO_BASE(S3C2410_GPB0); - unsigned long offset = S3C2410_GPIO_OFFSET(pin); - unsigned long flags; - unsigned long dat; - - BUG_ON(base != S3C24XX_GPIO_BASE(pin)); - - local_irq_save(flags); - dat = __raw_readl(base + 0x04); - - /* Add the shadow values */ - dat &= ~gpb_mask; - dat |= gpb_state; - - /* Do the operation like s3c2410_gpio_setpin */ - dat &= ~(1L << offset); - dat |= to << offset; - - /* Update the shadow state */ - if ((1L << offset) & gpb_mask) - set_shadow_gpio(offset, to); - - __raw_writel(dat, base + 0x04); - local_irq_restore(flags); -} -EXPORT_SYMBOL(gta02_gpb_setpin); |