diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/Makefile | 3 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/gpio.c | 243 |
2 files changed, 0 insertions, 246 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/Makefile b/arch/arm/cpu/armv7/omap-common/Makefile index 1394c3f..d37b22d 100644 --- a/arch/arm/cpu/armv7/omap-common/Makefile +++ b/arch/arm/cpu/armv7/omap-common/Makefile @@ -29,9 +29,6 @@ SOBJS := reset.o COBJS := timer.o COBJS += utils.o -ifneq ($(CONFIG_AM33XX)$(CONFIG_OMAP),) -COBJS += gpio.o -endif ifneq ($(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX),) COBJS += hwinit-common.o diff --git a/arch/arm/cpu/armv7/omap-common/gpio.c b/arch/arm/cpu/armv7/omap-common/gpio.c deleted file mode 100644 index fc89f2a..0000000 --- a/arch/arm/cpu/armv7/omap-common/gpio.c +++ /dev/null @@ -1,243 +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/gpio.h> -#include <asm/io.h> -#include <asm/errno.h> - -#define OMAP_GPIO_DIR_OUT 0 -#define OMAP_GPIO_DIR_IN 1 - -static inline const struct gpio_bank *get_gpio_bank(int gpio) -{ - return &omap_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(const struct gpio_bank *bank, int gpio, - int is_input) -{ - void *reg = bank->base; - u32 l; - - switch (bank->method) { - case METHOD_GPIO_24XX: - reg += OMAP_GPIO_OE; - break; - default: - return; - } - l = __raw_readl(reg); - if (is_input) - l |= 1 << gpio; - else - l &= ~(1 << gpio); - __raw_writel(l, reg); -} - -/** - * Get the direction of the GPIO by reading the GPIO_OE register - * corresponding to the specified bank. - */ -static int _get_gpio_direction(const struct gpio_bank *bank, int gpio) -{ - void *reg = bank->base; - u32 v; - - switch (bank->method) { - case METHOD_GPIO_24XX: - reg += OMAP_GPIO_OE; - break; - default: - return -1; - } - - v = __raw_readl(reg); - - if (v & (1 << gpio)) - return OMAP_GPIO_DIR_IN; - else - return OMAP_GPIO_DIR_OUT; -} - -static void _set_gpio_dataout(const 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 += OMAP_GPIO_SETDATAOUT; - else - reg += OMAP_GPIO_CLEARDATAOUT; - l = 1 << gpio; - break; - default: - printf("omap3-gpio unknown bank method %s %d\n", - __FILE__, __LINE__); - return; - } - __raw_writel(l, reg); -} - -/** - * Set value of the specified gpio - */ -int gpio_set_value(unsigned gpio, int value) -{ - const struct gpio_bank *bank; - - if (check_gpio(gpio) < 0) - return -1; - bank = get_gpio_bank(gpio); - _set_gpio_dataout(bank, get_gpio_index(gpio), value); - - return 0; -} - -/** - * Get value of the specified gpio - */ -int gpio_get_value(unsigned gpio) -{ - const struct gpio_bank *bank; - void *reg; - int input; - - if (check_gpio(gpio) < 0) - return -1; - bank = get_gpio_bank(gpio); - reg = bank->base; - switch (bank->method) { - case METHOD_GPIO_24XX: - input = _get_gpio_direction(bank, get_gpio_index(gpio)); - switch (input) { - case OMAP_GPIO_DIR_IN: - reg += OMAP_GPIO_DATAIN; - break; - case OMAP_GPIO_DIR_OUT: - reg += OMAP_GPIO_DATAOUT; - break; - default: - return -1; - } - break; - default: - return -1; - } - return (__raw_readl(reg) - & (1 << get_gpio_index(gpio))) != 0; -} - -/** - * Set gpio direction as input - */ -int gpio_direction_input(unsigned gpio) -{ - const struct gpio_bank *bank; - - if (check_gpio(gpio) < 0) - return -1; - - bank = get_gpio_bank(gpio); - _set_gpio_direction(bank, get_gpio_index(gpio), 1); - - return 0; -} - -/** - * Set gpio direction as output - */ -int gpio_direction_output(unsigned gpio, int value) -{ - const struct gpio_bank *bank; - - if (check_gpio(gpio) < 0) - return -1; - - bank = get_gpio_bank(gpio); - _set_gpio_dataout(bank, get_gpio_index(gpio), value); - _set_gpio_direction(bank, get_gpio_index(gpio), 0); - - return 0; -} - -/** - * Request a gpio before using it. - * - * NOTE: Argument 'label' is unused. - */ -int gpio_request(unsigned gpio, const char *label) -{ - if (check_gpio(gpio) < 0) - return -1; - - return 0; -} - -/** - * Reset and free the gpio after using it. - */ -int gpio_free(unsigned gpio) -{ - return 0; -} |