diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-03-30 14:04:53 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-03-30 14:04:53 +1100 |
| commit | 9ff9a26b786c35ee8d2a66222924a807ec851a9f (patch) | |
| tree | db432a17bccca1ca2c16907f0ee83ac449ed4012 /arch/arm/plat-orion/gpio.c | |
| parent | 0a3108beea9143225119d5e7c72a8e2c64f3eb7d (diff) | |
| parent | 0d34fb8e93ceba7b6dad0062dbb4a0813bacd75b (diff) | |
Merge commit 'origin/master' into next
Manual merge of:
arch/powerpc/include/asm/elf.h
drivers/i2c/busses/i2c-mpc.c
Diffstat (limited to 'arch/arm/plat-orion/gpio.c')
| -rw-r--r-- | arch/arm/plat-orion/gpio.c | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/arch/arm/plat-orion/gpio.c b/arch/arm/plat-orion/gpio.c index 0d12c2164766..32eb9e33bebb 100644 --- a/arch/arm/plat-orion/gpio.c +++ b/arch/arm/plat-orion/gpio.c @@ -19,7 +19,8 @@ static DEFINE_SPINLOCK(gpio_lock); static const char *gpio_label[GPIO_MAX]; /* non null for allocated GPIOs */ -static unsigned long gpio_valid[BITS_TO_LONGS(GPIO_MAX)]; +static unsigned long gpio_valid_input[BITS_TO_LONGS(GPIO_MAX)]; +static unsigned long gpio_valid_output[BITS_TO_LONGS(GPIO_MAX)]; static inline void __set_direction(unsigned pin, int input) { @@ -53,7 +54,7 @@ int gpio_direction_input(unsigned pin) { unsigned long flags; - if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) { + if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid_input)) { pr_debug("%s: invalid GPIO %d\n", __func__, pin); return -EINVAL; } @@ -83,7 +84,7 @@ int gpio_direction_output(unsigned pin, int value) unsigned long flags; u32 u; - if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) { + if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid_output)) { pr_debug("%s: invalid GPIO %d\n", __func__, pin); return -EINVAL; } @@ -161,7 +162,9 @@ int gpio_request(unsigned pin, const char *label) unsigned long flags; int ret; - if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) { + if (pin >= GPIO_MAX || + !(test_bit(pin, gpio_valid_input) || + test_bit(pin, gpio_valid_output))) { pr_debug("%s: invalid GPIO %d\n", __func__, pin); return -EINVAL; } @@ -183,7 +186,9 @@ EXPORT_SYMBOL(gpio_request); void gpio_free(unsigned pin) { - if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) { + if (pin >= GPIO_MAX || + !(test_bit(pin, gpio_valid_input) || + test_bit(pin, gpio_valid_output))) { pr_debug("%s: invalid GPIO %d\n", __func__, pin); return; } @@ -208,12 +213,18 @@ void __init orion_gpio_set_unused(unsigned pin) __set_direction(pin, 0); } -void __init orion_gpio_set_valid(unsigned pin, int valid) +void __init orion_gpio_set_valid(unsigned pin, int mode) { - if (valid) - __set_bit(pin, gpio_valid); + if (mode == 1) + mode = GPIO_INPUT_OK | GPIO_OUTPUT_OK; + if (mode & GPIO_INPUT_OK) + __set_bit(pin, gpio_valid_input); else - __clear_bit(pin, gpio_valid); + __clear_bit(pin, gpio_valid_input); + if (mode & GPIO_OUTPUT_OK) + __set_bit(pin, gpio_valid_output); + else + __clear_bit(pin, gpio_valid_output); } void orion_gpio_set_blink(unsigned pin, int blink) |