diff options
Diffstat (limited to 'arch/mips/bcm63xx/gpio.c')
| -rw-r--r-- | arch/mips/bcm63xx/gpio.c | 41 |
1 files changed, 36 insertions, 5 deletions
diff --git a/arch/mips/bcm63xx/gpio.c b/arch/mips/bcm63xx/gpio.c index f560fe7d38dd..a6c2135dbf38 100644 --- a/arch/mips/bcm63xx/gpio.c +++ b/arch/mips/bcm63xx/gpio.c @@ -4,7 +4,7 @@ * for more details. * * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> - * Copyright (C) 2008 Florian Fainelli <florian@openwrt.org> + * Copyright (C) 2008-2011 Florian Fainelli <florian@openwrt.org> */ #include <linux/kernel.h> @@ -18,6 +18,34 @@ #include <bcm63xx_io.h> #include <bcm63xx_regs.h> +#ifndef BCMCPU_RUNTIME_DETECT +#define gpio_out_low_reg GPIO_DATA_LO_REG +#ifdef CONFIG_BCM63XX_CPU_6345 +#ifdef gpio_out_low_reg +#undef gpio_out_low_reg +#define gpio_out_low_reg GPIO_DATA_LO_REG_6345 +#endif /* gpio_out_low_reg */ +#endif /* CONFIG_BCM63XX_CPU_6345 */ + +static inline void bcm63xx_gpio_out_low_reg_init(void) +{ +} +#else /* ! BCMCPU_RUNTIME_DETECT */ +static u32 gpio_out_low_reg; + +static void bcm63xx_gpio_out_low_reg_init(void) +{ + switch (bcm63xx_get_cpu_id()) { + case BCM6345_CPU_ID: + gpio_out_low_reg = GPIO_DATA_LO_REG_6345; + break; + default: + gpio_out_low_reg = GPIO_DATA_LO_REG; + break; + } +} +#endif /* ! BCMCPU_RUNTIME_DETECT */ + static DEFINE_SPINLOCK(bcm63xx_gpio_lock); static u32 gpio_out_low, gpio_out_high; @@ -33,7 +61,7 @@ static void bcm63xx_gpio_set(struct gpio_chip *chip, BUG(); if (gpio < 32) { - reg = GPIO_DATA_LO_REG; + reg = gpio_out_low_reg; mask = 1 << gpio; v = &gpio_out_low; } else { @@ -60,7 +88,7 @@ static int bcm63xx_gpio_get(struct gpio_chip *chip, unsigned gpio) BUG(); if (gpio < 32) { - reg = GPIO_DATA_LO_REG; + reg = gpio_out_low_reg; mask = 1 << gpio; } else { reg = GPIO_DATA_HI_REG; @@ -125,8 +153,11 @@ static struct gpio_chip bcm63xx_gpio_chip = { int __init bcm63xx_gpio_init(void) { - gpio_out_low = bcm_gpio_readl(GPIO_DATA_LO_REG); - gpio_out_high = bcm_gpio_readl(GPIO_DATA_HI_REG); + bcm63xx_gpio_out_low_reg_init(); + + gpio_out_low = bcm_gpio_readl(gpio_out_low_reg); + if (!BCMCPU_IS_6345()) + gpio_out_high = bcm_gpio_readl(GPIO_DATA_HI_REG); bcm63xx_gpio_chip.ngpio = bcm63xx_gpio_count(); pr_info("registering %d GPIOs\n", bcm63xx_gpio_chip.ngpio); |