From 3dd2d480558f45152a5d2ab5590c657055f1a756 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sat, 4 Oct 2014 11:29:54 -0600 Subject: dm: gpio: rpi_b: Drop request()/free() in the driver Now that the uclass supports gpio_request/free() there is no need for the driver to implement it too. Drop this unnecessary code. Signed-off-by: Simon Glass --- drivers/gpio/bcm2835_gpio.c | 89 --------------------------------------------- 1 file changed, 89 deletions(-) (limited to 'drivers') diff --git a/drivers/gpio/bcm2835_gpio.c b/drivers/gpio/bcm2835_gpio.c index 332cfc2b23..0244c01882 100644 --- a/drivers/gpio/bcm2835_gpio.c +++ b/drivers/gpio/bcm2835_gpio.c @@ -11,67 +11,10 @@ #include #include -#define GPIO_NAME_SIZE 20 - struct bcm2835_gpios { - char label[BCM2835_GPIO_COUNT][GPIO_NAME_SIZE]; struct bcm2835_gpio_regs *reg; }; -/** - * gpio_is_requested() - check if a GPIO has been requested - * - * @bank: Bank to check - * @offset: GPIO offset within bank to check - * @return true if marked as requested, false if not - */ -static inline bool gpio_is_requested(struct bcm2835_gpios *gpios, int offset) -{ - return *gpios->label[offset] != '\0'; -} - -static int check_requested(struct udevice *dev, unsigned offset, - const char *func) -{ - struct bcm2835_gpios *gpios = dev_get_priv(dev); - struct gpio_dev_priv *uc_priv = dev->uclass_priv; - - if (!gpio_is_requested(gpios, offset)) { - printf("omap_gpio: %s: error: gpio %s%d not requested\n", - func, uc_priv->bank_name, offset); - return -EPERM; - } - - return 0; -} - -static int bcm2835_gpio_request(struct udevice *dev, unsigned offset, - const char *label) -{ - struct bcm2835_gpios *gpios = dev_get_priv(dev); - - if (gpio_is_requested(gpios, offset)) - return -EBUSY; - - strncpy(gpios->label[offset], label, GPIO_NAME_SIZE); - gpios->label[offset][GPIO_NAME_SIZE - 1] = '\0'; - - return 0; -} - -static int bcm2835_gpio_free(struct udevice *dev, unsigned offset) -{ - struct bcm2835_gpios *gpios = dev_get_priv(dev); - int ret; - - ret = check_requested(dev, offset, __func__); - if (ret) - return ret; - gpios->label[offset][0] = '\0'; - - return 0; -} - static int bcm2835_gpio_direction_input(struct udevice *dev, unsigned gpio) { struct bcm2835_gpios *gpios = dev_get_priv(dev); @@ -142,9 +85,6 @@ static int bcm2835_gpio_get_function(struct udevice *dev, unsigned offset) { struct bcm2835_gpios *gpios = dev_get_priv(dev); - if (!gpio_is_requested(gpios, offset)) - return GPIOF_UNUSED; - /* GPIOF_FUNC is not implemented yet */ if (bcm2835_gpio_is_output(gpios, offset)) return GPIOF_OUTPUT; @@ -152,42 +92,13 @@ static int bcm2835_gpio_get_function(struct udevice *dev, unsigned offset) return GPIOF_INPUT; } -static int bcm2835_gpio_get_state(struct udevice *dev, unsigned int offset, - char *buf, int bufsize) -{ - struct gpio_dev_priv *uc_priv = dev->uclass_priv; - struct bcm2835_gpios *gpios = dev_get_priv(dev); - const char *label; - bool requested; - bool is_output; - int size; - - label = gpios->label[offset]; - is_output = bcm2835_gpio_is_output(gpios, offset); - size = snprintf(buf, bufsize, "%s%d: ", - uc_priv->bank_name ? uc_priv->bank_name : "", offset); - buf += size; - bufsize -= size; - requested = gpio_is_requested(gpios, offset); - snprintf(buf, bufsize, "%s: %d [%c]%s%s", - is_output ? "out" : " in", - bcm2835_get_value(gpios, offset), - requested ? 'x' : ' ', - requested ? " " : "", - label); - - return 0; -} static const struct dm_gpio_ops gpio_bcm2835_ops = { - .request = bcm2835_gpio_request, - .free = bcm2835_gpio_free, .direction_input = bcm2835_gpio_direction_input, .direction_output = bcm2835_gpio_direction_output, .get_value = bcm2835_gpio_get_value, .set_value = bcm2835_gpio_set_value, .get_function = bcm2835_gpio_get_function, - .get_state = bcm2835_gpio_get_state, }; static int bcm2835_gpio_probe(struct udevice *dev) -- cgit v1.2.1