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[PATCH] I2C: Add PXA I2C driver

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Add support for the I2C PXA driver.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
This commit is contained in:
Russell King
2005-06-15 12:38:14 +01:00
parent c0105338eb
commit b652b438fc
6 changed files with 1167 additions and 0 deletions
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include/linux/i2c-id.h
+1
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@@ -203,6 +203,7 @@
#define I2C_ALGO_MV64XXX 0x190000 /* Marvell mv64xxx i2c ctlr */
#define I2C_ALGO_PCA 0x1a0000 /* PCA 9564 style adapters */
#define I2C_ALGO_AU1550 0x1b0000 /* Au1550 PSC algorithm */
#define I2C_ALGO_PXA 0x1c0000 /* Intel PXA I2C algorithm */
#define I2C_ALGO_EXP 0x800000 /* experimental */
include/linux/i2c-pxa.h
+48
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@@ -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 */