diff options
Diffstat (limited to 'target/linux/brcm63xx/files/arch/mips/bcm63xx/gpio.c')
| -rw-r--r-- | target/linux/brcm63xx/files/arch/mips/bcm63xx/gpio.c | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/target/linux/brcm63xx/files/arch/mips/bcm63xx/gpio.c b/target/linux/brcm63xx/files/arch/mips/bcm63xx/gpio.c deleted file mode 100644 index 53e46641a3..0000000000 --- a/target/linux/brcm63xx/files/arch/mips/bcm63xx/gpio.c +++ /dev/null @@ -1,131 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> - * Copyright (C) 2008 Florian Fainelli <florian@openwrt.org> - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/spinlock.h> -#include <linux/platform_device.h> -#include <linux/gpio.h> - -#include <bcm63xx_cpu.h> -#include <bcm63xx_gpio.h> -#include <bcm63xx_io.h> -#include <bcm63xx_regs.h> - -static DEFINE_SPINLOCK(bcm63xx_gpio_lock); -static u32 gpio_out_low, gpio_out_high; - -static void bcm63xx_gpio_set(struct gpio_chip *chip, - unsigned gpio, int val) -{ - u32 reg; - u32 mask; - u32 *v; - unsigned long flags; - - if (gpio >= chip->ngpio) - BUG(); - - if (gpio < 32) { - reg = GPIO_DATA_LO_REG; - mask = 1 << gpio; - v = &gpio_out_low; - } else { - reg = GPIO_DATA_HI_REG; - mask = 1 << (gpio - 32); - v = &gpio_out_high; - } - - spin_lock_irqsave(&bcm63xx_gpio_lock, flags); - if (val) - *v |= mask; - else - *v &= ~mask; - bcm_gpio_writel(*v, reg); - spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags); -} - -static int bcm63xx_gpio_get(struct gpio_chip *chip, unsigned gpio) -{ - u32 reg; - u32 mask; - - if (gpio >= chip->ngpio) - BUG(); - - if (gpio < 32) { - reg = GPIO_DATA_LO_REG; - mask = 1 << gpio; - } else { - reg = GPIO_DATA_HI_REG; - mask = 1 << (gpio - 32); - } - - return !!(bcm_gpio_readl(reg) & mask); -} - -static int bcm63xx_gpio_set_direction(struct gpio_chip *chip, - unsigned gpio, int dir) -{ - u32 reg; - u32 mask; - u32 tmp; - unsigned long flags; - - if (gpio >= chip->ngpio) - BUG(); - - if (gpio < 32) { - reg = GPIO_CTL_LO_REG; - mask = 1 << gpio; - } else { - reg = GPIO_CTL_HI_REG; - mask = 1 << (gpio - 32); - } - - spin_lock_irqsave(&bcm63xx_gpio_lock, flags); - tmp = bcm_gpio_readl(reg); - if (dir == GPIO_DIR_IN) - tmp &= ~mask; - else - tmp |= mask; - bcm_gpio_writel(tmp, reg); - spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags); - - return 0; -} - -static int bcm63xx_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) -{ - return bcm63xx_gpio_set_direction(chip, gpio, GPIO_DIR_IN); -} - -static int bcm63xx_gpio_direction_output(struct gpio_chip *chip, - unsigned gpio, int value) -{ - bcm63xx_gpio_set(chip, gpio, value); - return bcm63xx_gpio_set_direction(chip, gpio, GPIO_DIR_OUT); -} - - -static struct gpio_chip bcm63xx_gpio_chip = { - .label = "bcm63xx-gpio", - .direction_input = bcm63xx_gpio_direction_input, - .direction_output = bcm63xx_gpio_direction_output, - .get = bcm63xx_gpio_get, - .set = bcm63xx_gpio_set, - .base = 0, -}; - -int __init bcm63xx_gpio_init(void) -{ - bcm63xx_gpio_chip.ngpio = bcm63xx_gpio_count(); - printk(KERN_INFO "registering %d GPIOs\n", bcm63xx_gpio_chip.ngpio); - return gpiochip_add(&bcm63xx_gpio_chip); -} |