[PATCH] I2C: Add PXA I2C driver
Add support for the I2C PXA driver.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
diff --git a/include/linux/i2c-id.h b/include/linux/i2c-id.h
index 89270ce..74d6dc9 100644
--- a/include/linux/i2c-id.h
+++ b/include/linux/i2c-id.h
@@ -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 */
diff --git a/include/linux/i2c-pxa.h b/include/linux/i2c-pxa.h
new file mode 100644
index 0000000..5f3eaf8
--- /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 */