board/T1040qds: Add VSC9953 support for T1040qds board

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

diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 128249ef89099cbd2cc63ec91910e25768e42c55..36a36c64b8a6a19879e5236eb85af2fd5960a43d 100644 (file)
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -83,7 +83,7 @@ int gpio_get_value(unsigned gpio);
 int gpio_set_value(unsigned gpio, int value);
 
 /* State of a GPIO, as reported by get_function() */
-enum {
+enum gpio_func_t {
        GPIOF_INPUT = 0,
        GPIOF_OUTPUT,
        GPIOF_UNUSED,           /* Not claimed */
@@ -95,6 +95,66 @@ enum {
 
 struct udevice;
 
+/**
+ * gpio_get_status() - get the current GPIO status as a string
+ *
+ * Obtain the current GPIO status as a string which can be presented to the
+ * user. A typical string is:
+ *
+ * "b4:  in: 1 [x] sdmmc_cd"
+ *
+ * which means this is GPIO bank b, offset 4, currently set to input, current
+ * value 1, [x] means that it is requested and the owner is 'sdmmc_cd'
+ *
+ * @dev:       Device to check
+ * @offset:    Offset of device GPIO to check
+ * @buf:       Place to put string
+ * @buffsize:  Size of string including \0
+ */
+int gpio_get_status(struct udevice *dev, int offset, char *buf, int buffsize);
+
+/**
+ * gpio_get_function() - get the current function for a GPIO pin
+ *
+ * Note this returns GPIOF_UNUSED if the GPIO is not requested.
+ *
+ * @dev:       Device to check
+ * @offset:    Offset of device GPIO to check
+ * @namep:     If non-NULL, this is set to the nane given when the GPIO
+ *             was requested, or -1 if it has not been requested
+ * @return  -ENODATA if the driver returned an unknown function,
+ * -ENODEV if the device is not active, -EINVAL if the offset is invalid.
+ * GPIOF_UNUSED if the GPIO has not been requested. Otherwise returns the
+ * function from enum gpio_func_t.
+ */
+int gpio_get_function(struct udevice *dev, int offset, const char **namep);
+
+/**
+ * gpio_get_raw_function() - get the current raw function for a GPIO pin
+ *
+ * Note this does not return GPIOF_UNUSED - it will always return the GPIO
+ * driver's view of a pin function, even if it is not correctly set up.
+ *
+ * @dev:       Device to check
+ * @offset:    Offset of device GPIO to check
+ * @namep:     If non-NULL, this is set to the nane given when the GPIO
+ *             was requested, or -1 if it has not been requested
+ * @return  -ENODATA if the driver returned an unknown function,
+ * -ENODEV if the device is not active, -EINVAL if the offset is invalid.
+ * Otherwise returns the function from enum gpio_func_t.
+ */
+int gpio_get_raw_function(struct udevice *dev, int offset, const char **namep);
+
+/**
+ * gpio_requestf() - request a GPIO using a format string for the owner
+ *
+ * This is a helper function for gpio_request(). It allows you to provide
+ * a printf()-format string for the GPIO owner. It calls gpio_request() with
+ * the string that is created
+ */
+int gpio_requestf(unsigned gpio, const char *fmt, ...)
+               __attribute__ ((format (__printf__, 2, 3)));
+
 /**
  * struct struct dm_gpio_ops - Driver model GPIO operations
  *
@@ -138,8 +198,6 @@ struct dm_gpio_ops {
         * @return current function - GPIOF_...
         */
        int (*get_function)(struct udevice *dev, unsigned offset);
-       int (*get_state)(struct udevice *dev, unsigned offset, char *state,
-                        int maxlen);
 };
 
 /**
@@ -199,4 +257,15 @@ const char *gpio_get_bank_info(struct udevice *dev, int *offset_count);
 int gpio_lookup_name(const char *name, struct udevice **devp,
                     unsigned int *offsetp, unsigned int *gpiop);
 
+/**
+ * get_gpios() - Turn the values of a list of GPIOs into an integer
+ *
+ * This puts the value of the first GPIO into bit 0, the second into bit 1,
+ * etc. then returns the resulting integer.
+ *
+ * @gpio_list: List of GPIOs to collect
+ * @return resulting integer value
+ */
+unsigned gpio_get_values_as_int(const int *gpio_list);
+
 #endif /* _ASM_GENERIC_GPIO_H_ */