gpio: Use const where possible

[oweals/u-boot.git] / include / asm-generic / gpio.h

diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 059f33906ea1ddb3a208a5425bcc9d6197793123..68b5f0b3c28248110377f2209b84c12e103f56bc 100644 (file)
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -133,7 +133,7 @@ struct gpio_desc {
  *             previously returned by gpio_request_by_name()
  * @return true if valid, false if not
  */
-static inline bool dm_gpio_is_valid(struct gpio_desc *desc)
+static inline bool dm_gpio_is_valid(const struct gpio_desc *desc)
 {
        return desc->dev != NULL;
 }
@@ -369,7 +369,7 @@ int gpio_get_values_as_int(const int *gpio_list);
  * @count: Number of GPIOs
  * @return resulting integer value, or -ve on error
  */
-int dm_gpio_get_values_as_int(struct gpio_desc *desc_list, int count);
+int dm_gpio_get_values_as_int(const struct gpio_desc *desc_list, int count);
 
 /**
  * gpio_claim_vector() - claim a number of GPIOs for input
@@ -536,9 +536,9 @@ int gpio_free_list_nodev(struct gpio_desc *desc, int count);
  *             previously returned by gpio_request_by_name()
  * @return GPIO value (0 for inactive, 1 for active) or -ve on error
  */
-int dm_gpio_get_value(struct gpio_desc *desc);
+int dm_gpio_get_value(const struct gpio_desc *desc);
 
-int dm_gpio_set_value(struct gpio_desc *desc, int value);
+int dm_gpio_set_value(const struct gpio_desc *desc, int value);
 
 /**
  * dm_gpio_set_dir() - Set the direction for a GPIO
@@ -577,6 +577,6 @@ int dm_gpio_set_dir_flags(struct gpio_desc *desc, ulong flags);
  *             previously returned by gpio_request_by_name()
  * @return GPIO number, or -ve if not found
  */
-int gpio_get_number(struct gpio_desc *desc);
+int gpio_get_number(const struct gpio_desc *desc);
 
 #endif /* _ASM_GENERIC_GPIO_H_ */