spi_bfin5xx: limit reaches -1

[safe/jmp/linux-2.6] / include / asm-generic / gpio.h

diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 04cb1d1..d6c379d 100644 (file)
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -35,6 +35,10 @@ struct module;
  * @label: for diagnostics
  * @dev: optional device providing the GPIOs
  * @owner: helps prevent removal of modules exporting active GPIOs
+ * @request: optional hook for chip-specific activation, such as
+ *     enabling module power and clock; may sleep
+ * @free: optional hook for chip-specific deactivation, such as
+ *     disabling module power and clock; may sleep
  * @direction_input: configures signal "offset" as input, or returns error
  * @get: returns value for signal "offset"; for output signals this
  *     returns either the value actually sensed, or zero
@@ -51,6 +55,10 @@ struct module;
  *     handled is (base + ngpio - 1).
  * @can_sleep: flag must be set iff get()/set() methods sleep, as they
  *     must while accessing GPIO expander chips over I2C or SPI
+ * @names: if set, must be an array of strings to use as alternative
+ *      names for the GPIOs in this chip. Any entry in the array
+ *      may be NULL if there is no alias for the GPIO, however the
+ *      array must be @ngpio entries long.
  *
  * A gpio_chip can help platforms abstract various sources of GPIOs so
  * they can all be accessed through a common programing interface.
@@ -67,6 +75,11 @@ struct gpio_chip {
        struct device           *dev;
        struct module           *owner;
 
+       int                     (*request)(struct gpio_chip *chip,
+                                               unsigned offset);
+       void                    (*free)(struct gpio_chip *chip,
+                                               unsigned offset);
+
        int                     (*direction_input)(struct gpio_chip *chip,
                                                unsigned offset);
        int                     (*get)(struct gpio_chip *chip,
@@ -83,6 +96,7 @@ struct gpio_chip {
                                                struct gpio_chip *chip);
        int                     base;
        u16                     ngpio;
+       char                    **names;
        unsigned                can_sleep:1;
        unsigned                exported:1;
 };