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author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-06-15 12:38:14 +0100 |
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committer | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-06-15 12:38:14 +0100 |
commit | b652b438fcad4c9c079d0774e9d45ee58fae22e2 (patch) | |
tree | 8911e5232e55f436491f24d19d802c4f49d7749c /include/linux/i2c-pxa.h | |
parent | c0105338eb4e61e537ca34ae06921177cb6efcf0 (diff) | |
download | linux-b652b438fcad4c9c079d0774e9d45ee58fae22e2.tar.gz linux-b652b438fcad4c9c079d0774e9d45ee58fae22e2.tar.bz2 linux-b652b438fcad4c9c079d0774e9d45ee58fae22e2.zip |
[PATCH] I2C: Add PXA I2C driver
Add support for the I2C PXA driver.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Diffstat (limited to 'include/linux/i2c-pxa.h')
-rw-r--r-- | include/linux/i2c-pxa.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/include/linux/i2c-pxa.h b/include/linux/i2c-pxa.h new file mode 100644 index 000000000000..5f3eaf802223 --- /dev/null +++ b/include/linux/i2c-pxa.h @@ -0,0 +1,48 @@ +#ifndef _LINUX_I2C_ALGO_PXA_H +#define _LINUX_I2C_ALGO_PXA_H + +struct i2c_eeprom_emu_watcher { + void (*write)(void *, unsigned int addr, unsigned char newval); +}; + +struct i2c_eeprom_emu_watch { + struct list_head node; + unsigned int start; + unsigned int end; + struct i2c_eeprom_emu_watcher *ops; + void *data; +}; + +#define I2C_EEPROM_EMU_SIZE (256) + +struct i2c_eeprom_emu { + unsigned int size; + unsigned int ptr; + unsigned int seen_start; + struct list_head watch; + + unsigned char bytes[I2C_EEPROM_EMU_SIZE]; +}; + +typedef enum i2c_slave_event_e { + I2C_SLAVE_EVENT_START_READ, + I2C_SLAVE_EVENT_START_WRITE, + I2C_SLAVE_EVENT_STOP +} i2c_slave_event_t; + +struct i2c_slave_client { + void *data; + void (*event)(void *ptr, i2c_slave_event_t event); + int (*read) (void *ptr); + void (*write)(void *ptr, unsigned int val); +}; + +extern int i2c_eeprom_emu_addwatcher(struct i2c_eeprom_emu *, void *data, + unsigned int addr, unsigned int size, + struct i2c_eeprom_emu_watcher *); + +extern void i2c_eeprom_emu_delwatcher(struct i2c_eeprom_emu *, void *data, struct i2c_eeprom_emu_watcher *watcher); + +extern struct i2c_eeprom_emu *i2c_pxa_get_eeprom(void); + +#endif /* _LINUX_I2C_ALGO_PXA_H */ |