efi_loader: type of efi_secure_mode

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

diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 5686df7cece8887ac7656fe19279f5766d73d991..e16c2f31d9d2a5895ddd854e03805e5e40752c3a 100644 (file)
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -8,6 +8,7 @@
 #define _ASM_GENERIC_GPIO_H_
 
 #include <dm/ofnode.h>
+#include <linux/bitops.h>
 
 struct ofnode_phandle_args;
 
@@ -119,8 +120,12 @@ struct gpio_desc {
        unsigned long flags;
 #define GPIOD_IS_OUT           BIT(1)  /* GPIO is an output */
 #define GPIOD_IS_IN            BIT(2)  /* GPIO is an input */
-#define GPIOD_ACTIVE_LOW       BIT(3)  /* value has active low */
+#define GPIOD_ACTIVE_LOW       BIT(3)  /* GPIO is active when value is low */
 #define GPIOD_IS_OUT_ACTIVE    BIT(4)  /* set output active */
+#define GPIOD_OPEN_DRAIN       BIT(5)  /* GPIO is open drain type */
+#define GPIOD_OPEN_SOURCE      BIT(6)  /* GPIO is open source type */
+#define GPIOD_PULL_UP          BIT(7)  /* GPIO has pull-up enabled */
+#define GPIOD_PULL_DOWN                BIT(8)  /* GPIO has pull-down enabled */
 
        uint offset;            /* GPIO offset within the device */
        /*
@@ -293,6 +298,37 @@ struct dm_gpio_ops {
         */
        int (*xlate)(struct udevice *dev, struct gpio_desc *desc,
                     struct ofnode_phandle_args *args);
+
+       /**
+        * set_dir_flags() - Set GPIO dir flags
+        *
+        * This function should set up the GPIO configuration according to the
+        * information provide by the direction flags bitfield.
+        *
+        * This method is optional.
+        *
+        * @dev:        GPIO device
+        * @offset:     GPIO offset within that device
+        * @flags:      GPIO configuration to use
+        * @return 0 if OK, -ve on error
+        */
+       int (*set_dir_flags)(struct udevice *dev, unsigned int offset,
+                            ulong flags);
+
+       /**
+        * get_dir_flags() - Get GPIO dir flags
+        *
+        * This function return the GPIO direction flags used.
+        *
+        * This method is optional.
+        *
+        * @dev:        GPIO device
+        * @offset:     GPIO offset within that device
+        * @flags:      place to put the used direction flags by GPIO
+        * @return 0 if OK, -ve on error
+        */
+       int (*get_dir_flags)(struct udevice *dev, unsigned int offset,
+                            ulong *flags);
 };
 
 /**
@@ -592,8 +628,7 @@ int dm_gpio_set_value(const struct gpio_desc *desc, int value);
 /**
  * dm_gpio_set_dir() - Set the direction for a GPIO
  *
- * This sets up the direction according tot the provided flags. It will do
- * nothing unless the direction is actually specified.
+ * This sets up the direction according to the GPIO flags: desc->flags.
  *
  * @desc:      GPIO description containing device, offset and flags,
  *             previously returned by gpio_request_by_name()
@@ -602,11 +637,10 @@ int dm_gpio_set_value(const struct gpio_desc *desc, int value);
 int dm_gpio_set_dir(struct gpio_desc *desc);
 
 /**
- * dm_gpio_set_dir_flags() - Set direction using specific flags
+ * dm_gpio_set_dir_flags() - Set direction using description and added flags
  *
- * This is like dm_gpio_set_dir() except that the flags value is provided
- * instead of being used from desc->flags. This is needed because in many
- * cases the GPIO description does not include direction information.
+ * This sets up the direction according to the provided flags and the GPIO
+ * description (desc->flags) which include direction information.
  * Note that desc->flags is updated by this function.
  *
  * @desc:      GPIO description containing device, offset and flags,
@@ -616,6 +650,18 @@ int dm_gpio_set_dir(struct gpio_desc *desc);
  */
 int dm_gpio_set_dir_flags(struct gpio_desc *desc, ulong flags);
 
+/**
+ * dm_gpio_get_dir_flags() - Get direction flags
+ *
+ * read the current direction flags
+ *
+ * @desc:      GPIO description containing device, offset and flags,
+ *             previously returned by gpio_request_by_name()
+ * @flags:     place to put the used flags
+ * @return 0 if OK, -ve on error, in which case desc->flags is not updated
+ */
+int dm_gpio_get_dir_flags(struct gpio_desc *desc, ulong *flags);
+
 /**
  * gpio_get_number() - Get the global GPIO number of a GPIO
  *