linux/drivers/i2c
Shinya Kuribayashi 4cb6d1d6da i2c-designware: Set Tx/Rx FIFO threshold levels
As a hardware feature, DW I2C core generates a STOP condition whenever
the Tx FIFO becomes empty (strictly speaking, whenever the last byte in
the Tx FIFO is sent out), even if we have more bytes to be written.

In other words, we must never make "Tx FIFO underrun" happen during
a transaction, except for the last byte.  For the safety's sake, we'd
make TX_EMPTY interrupt get triggered every time one byte is processed.

The Rx FIFO threshold needs to be set as well.

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-12-09 00:19:11 +00:00
..
algos i2c-algo-pca: Let PCA9564 recover from unacked data byte (state 0x30) 2009-05-05 08:39:25 +02:00
busses i2c-designware: Set Tx/Rx FIFO threshold levels 2009-12-09 00:19:11 +00:00
chips i2c/chips: Move ds1682 to drivers/misc 2009-12-06 17:06:16 +01:00
i2c-boardinfo.c i2c: Use rwsem instead of mutex for board info 2009-06-19 16:58:20 +02:00
i2c-core.c i2c: Refactor for_each callbacks 2009-12-06 17:06:27 +01:00
i2c-core.h i2c: Use rwsem instead of mutex for board info 2009-06-19 16:58:20 +02:00
i2c-dev.c i2c: Remove big kernel lock from i2cdev_open 2009-12-06 17:06:26 +01:00
Kconfig i2c: Prevent priority inversion on top of bus lock 2009-12-06 17:06:22 +01:00
Makefile i2c: Add i2c_board_info and i2c_new_device() 2007-05-01 23:26:31 +02:00