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mmap: added mmap io to gpio

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* added function to gpio to use mmap
* changed board definition format around mmap io (fast-gpio)
* Intel Galileo Rev D updated to follow changed definitions

* Example performing mmap io to pin 2 added.

Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
This commit is contained in:
Thomas Ingleby
2014-05-29 16:30:07 +01:00
parent b9352a9e8c
commit 7af6a96a13
8 changed files with 182 additions and 11 deletions
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19
api/maa.h
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@@ -103,13 +103,22 @@ typedef struct {
*/
typedef struct {
/*@{*/
unsigned int pinmap;
unsigned int parent_id;
unsigned int mux_total;
maa_mux_t mux[6];
unsigned int pinmap; /**< sysfs pin */
unsigned int parent_id; /** parent chip id */
unsigned int mux_total; /** Numfer of muxes needed for operation of pin */
maa_mux_t mux[6]; /** Array holding information about mux */
/*@}*/
} maa_pin_t;
typedef struct {
/*@{*/
char mem_dev[32]; /**< Memory device to use /dev/uio0 etc */
unsigned int mem_sz; /** Size of memory to map */
unsigned int bit_pos; /** Position of value bit */
maa_pin_t gpio; /** GPio context containing none mmap info */
/*@}*/
} maa_mmap_pin_t;
/**
* A Structure representing a physical Pin.
*/
@@ -120,7 +129,7 @@ typedef struct {
maa_pin_t gpio; /**< GPIO structure */
maa_pin_t pwm; /**< PWM structure */
maa_pin_t aio; /**< Anaglog Pin */
maa_pin_t fast_gpio; /**< Fast GPIO */
maa_mmap_pin_t mmap; /**< GPIO through memory */
maa_pin_t i2c; /**< i2c bus/pin */
maa_pin_t spi; /**< spi bus/pin */
/*@}*/