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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-06-15 15:38:14 +0400
committerRussell King <rmk@dyn-67.arm.linux.org.uk>2005-06-15 15:38:14 +0400
commitb652b438fcad4c9c079d0774e9d45ee58fae22e2 (patch)
tree8911e5232e55f436491f24d19d802c4f49d7749c /include/linux/i2c-pxa.h
parentc0105338eb4e61e537ca34ae06921177cb6efcf0 (diff)
downloadlinux-b652b438fcad4c9c079d0774e9d45ee58fae22e2.tar.xz
[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.h48
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 */