Commit graph

5 commits

Author SHA1 Message Date
Mike Frysinger
b5cebb4fd6 Blackfin: TWI/I2C: implement multibus support
In order to do this cleanly, the register accesses have to be converted to
a C struct (base pointer), so do that in the process.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-05 10:04:38 +02:00
Mike Frysinger
08a1c6258c Blackfin: TWI/I2C: implement bus speed get/set functions
While we're here, improve the speed calculation a bit to match the HRM.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-30 15:10:58 +01:00
Mike Frysinger
3814ea4f00 Blackfin: TWI/I2C: add timeout to transfer
The current transfer code relies on ctrlc() to abort transfers, but this
requires user interactivity.  Naturalize the process with a timeout.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-30 15:10:58 +01:00
Peter Meerwald
98ab14e858 Blackfin: TWI/I2C: fix pure writes
If doing a pure write with register address and data (not a read/write
combo transfer), we don't set the initial transfer length properly which
ends up causing only the register address to be transferred.

While we're here, fix the i2c_write() parameter description of the buffer.

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-30 08:27:45 +02:00
Mike Frysinger
be853bf86b Blackfin: overhaul i2c driver
The current Blackfin i2c driver does not work properly with certain devices
due to it breaking up transfers incorrectly.  This is a rewrite of the
driver and relocates it to the newer place in the source tree.

Also remove duplicated I2C speed defines in Blackfin board configs and
disable I2C slave address usage since it isn't implemented.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-01-28 13:26:13 -05:00