2 files changed, 49 insertions, 0 deletions
diff --git a/include/linux/i2c-id.h b/include/linux/i2c-id.h
index 89270ce51470..74d6dc942715 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 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 */