diff options
Diffstat (limited to 'arch/arm/plat-mxc/iomux-mx1-mx2.c')
-rw-r--r-- | arch/arm/plat-mxc/iomux-mx1-mx2.c | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/arch/arm/plat-mxc/iomux-mx1-mx2.c b/arch/arm/plat-mxc/iomux-mx1-mx2.c index d97387aa9a42..df6f18395686 100644 --- a/arch/arm/plat-mxc/iomux-mx1-mx2.c +++ b/arch/arm/plat-mxc/iomux-mx1-mx2.c @@ -110,12 +110,13 @@ void mxc_gpio_mode(int gpio_mode) EXPORT_SYMBOL(mxc_gpio_mode); int mxc_gpio_setup_multiple_pins(const int *pin_list, unsigned count, - int alloc_mode, const char *label) + const char *label) { const int *p = pin_list; int i; unsigned gpio; unsigned mode; + int ret = -EINVAL; for (i = 0; i < count; i++) { gpio = *p & (GPIO_PIN_MASK | GPIO_PORT_MASK); @@ -124,33 +125,33 @@ int mxc_gpio_setup_multiple_pins(const int *pin_list, unsigned count, if (gpio >= (GPIO_PORT_MAX + 1) * 32) goto setup_error; - if (alloc_mode & MXC_GPIO_ALLOC_MODE_RELEASE) - gpio_free(gpio); - else if (!(alloc_mode & MXC_GPIO_ALLOC_MODE_NO_ALLOC)) - if (gpio_request(gpio, label) - && !(alloc_mode & MXC_GPIO_ALLOC_MODE_TRY_ALLOC)) - goto setup_error; + ret = gpio_request(gpio, label); + if (ret) + goto setup_error; - if (!(alloc_mode & (MXC_GPIO_ALLOC_MODE_ALLOC_ONLY | - MXC_GPIO_ALLOC_MODE_RELEASE))) - mxc_gpio_mode(gpio | mode); + mxc_gpio_mode(gpio | mode); p++; } return 0; setup_error: - if (alloc_mode & (MXC_GPIO_ALLOC_MODE_NO_ALLOC | - MXC_GPIO_ALLOC_MODE_TRY_ALLOC)) - return -EINVAL; + mxc_gpio_release_multiple_pins(pin_list, i); + return ret; +} +EXPORT_SYMBOL(mxc_gpio_setup_multiple_pins); - while (p != pin_list) { - p--; - gpio = *p & (GPIO_PIN_MASK | GPIO_PORT_MASK); +void mxc_gpio_release_multiple_pins(const int *pin_list, int count) +{ + const int *p = pin_list; + int i; + + for (i = 0; i < count; i++) { + unsigned gpio = *p & (GPIO_PIN_MASK | GPIO_PORT_MASK); gpio_free(gpio); + p++; } - return -EINVAL; } -EXPORT_SYMBOL(mxc_gpio_setup_multiple_pins); +EXPORT_SYMBOL(mxc_gpio_release_multiple_pins); |