HID: wiimote: Allow direct eeprom access
The wiimote provides direct access to parts of its eeprom. This implements read
support for small chunks of the eeprom. This isn't very fast but prevents the
reader from blocking the wiimote stream for too long.
Write support is not yet supported as the wiimote breaks if we overwrite its
memory. Use hidraw to reverse-engineer the eeprom before implementing write
support here.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-wiimote.h b/drivers/hid/hid-wiimote.h
index 89b8851..7b67657 100644
--- a/drivers/hid/hid-wiimote.h
+++ b/drivers/hid/hid-wiimote.h
@@ -120,6 +120,13 @@
extern ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset,
__u8 *rmem, __u8 size);
+#define wiiproto_req_rreg(wdata, os, sz) \
+ wiiproto_req_rmem((wdata), false, (os), (sz))
+#define wiiproto_req_reeprom(wdata, os, sz) \
+ wiiproto_req_rmem((wdata), true, (os), (sz))
+extern void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom,
+ __u32 offset, __u16 size);
+
#ifdef CONFIG_HID_WIIMOTE_EXT
extern int wiiext_init(struct wiimote_data *wdata);