diff options
Diffstat (limited to 'cpu/arm_cortexa8/omap3/gpio.c')
| -rw-r--r-- | cpu/arm_cortexa8/omap3/gpio.c | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/cpu/arm_cortexa8/omap3/gpio.c b/cpu/arm_cortexa8/omap3/gpio.c deleted file mode 100644 index aeb6066d89..0000000000 --- a/cpu/arm_cortexa8/omap3/gpio.c +++ /dev/null @@ -1,185 +0,0 @@ -/* - * Copyright (c) 2009 Wind River Systems, Inc. - * Tom Rix <Tom.Rix@windriver.com> - * - * 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 - * - * This work is derived from the linux 2.6.27 kernel source - * To fetch, use the kernel repository - * git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git - * Use the v2.6.27 tag. - * - * Below is the original's header including its copyright - * - * linux/arch/arm/plat-omap/gpio.c - * - * Support functions for OMAP GPIO - * - * Copyright (C) 2003-2005 Nokia Corporation - * Written by Juha Yrjölä <juha.yrjola@nokia.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <common.h> -#include <asm/arch/gpio.h> -#include <asm/io.h> -#include <asm/errno.h> - -static struct gpio_bank gpio_bank_34xx[6] = { - { (void *)OMAP34XX_GPIO1_BASE, METHOD_GPIO_24XX }, - { (void *)OMAP34XX_GPIO2_BASE, METHOD_GPIO_24XX }, - { (void *)OMAP34XX_GPIO3_BASE, METHOD_GPIO_24XX }, - { (void *)OMAP34XX_GPIO4_BASE, METHOD_GPIO_24XX }, - { (void *)OMAP34XX_GPIO5_BASE, METHOD_GPIO_24XX }, - { (void *)OMAP34XX_GPIO6_BASE, METHOD_GPIO_24XX }, -}; - -static struct gpio_bank *gpio_bank = &gpio_bank_34xx[0]; - -static inline struct gpio_bank *get_gpio_bank(int gpio) -{ - return &gpio_bank[gpio >> 5]; -} - -static inline int get_gpio_index(int gpio) -{ - return gpio & 0x1f; -} - -static inline int gpio_valid(int gpio) -{ - if (gpio < 0) - return -1; - if (gpio < 192) - return 0; - return -1; -} - -static int check_gpio(int gpio) -{ - if (gpio_valid(gpio) < 0) { - printf("ERROR : check_gpio: invalid GPIO %d\n", gpio); - return -1; - } - return 0; -} - -static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input) -{ - void *reg = bank->base; - u32 l; - - switch (bank->method) { - case METHOD_GPIO_24XX: - reg += OMAP24XX_GPIO_OE; - break; - default: - return; - } - l = __raw_readl(reg); - if (is_input) - l |= 1 << gpio; - else - l &= ~(1 << gpio); - __raw_writel(l, reg); -} - -void omap_set_gpio_direction(int gpio, int is_input) -{ - struct gpio_bank *bank; - - if (check_gpio(gpio) < 0) - return; - bank = get_gpio_bank(gpio); - _set_gpio_direction(bank, get_gpio_index(gpio), is_input); -} - -static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable) -{ - void *reg = bank->base; - u32 l = 0; - - switch (bank->method) { - case METHOD_GPIO_24XX: - if (enable) - reg += OMAP24XX_GPIO_SETDATAOUT; - else - reg += OMAP24XX_GPIO_CLEARDATAOUT; - l = 1 << gpio; - break; - default: - printf("omap3-gpio unknown bank method %s %d\n", - __FILE__, __LINE__); - return; - } - __raw_writel(l, reg); -} - -void omap_set_gpio_dataout(int gpio, int enable) -{ - struct gpio_bank *bank; - - if (check_gpio(gpio) < 0) - return; - bank = get_gpio_bank(gpio); - _set_gpio_dataout(bank, get_gpio_index(gpio), enable); -} - -int omap_get_gpio_datain(int gpio) -{ - struct gpio_bank *bank; - void *reg; - - if (check_gpio(gpio) < 0) - return -EINVAL; - bank = get_gpio_bank(gpio); - reg = bank->base; - switch (bank->method) { - case METHOD_GPIO_24XX: - reg += OMAP24XX_GPIO_DATAIN; - break; - default: - return -EINVAL; - } - return (__raw_readl(reg) - & (1 << get_gpio_index(gpio))) != 0; -} - -static void _reset_gpio(struct gpio_bank *bank, int gpio) -{ - _set_gpio_direction(bank, get_gpio_index(gpio), 1); -} - -int omap_request_gpio(int gpio) -{ - if (check_gpio(gpio) < 0) - return -EINVAL; - - return 0; -} - -void omap_free_gpio(int gpio) -{ - struct gpio_bank *bank; - - if (check_gpio(gpio) < 0) - return; - bank = get_gpio_bank(gpio); - - _reset_gpio(bank, gpio); -} |