diff options
| author | Luca Ceresoli <[email protected]> | 2023-06-19 14:22:06 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <[email protected]> | 2023-07-14 13:11:44 +0200 |
| commit | a076a860acae77bbdcbd316541e5552e81fb1772 (patch) | |
| tree | d89211b36c516e4547da8dcbee44bc092b798a20 /tools/perf/scripts/python | |
| parent | 86251cf8fd3ca5268486ce74fd3710f0d448a17d (diff) | |
media: i2c: add I2C Address Translator (ATR) support
An ATR is a device that looks similar to an i2c-mux: it has an I2C
slave "upstream" port and N master "downstream" ports, and forwards
transactions from upstream to the appropriate downstream port. But it
is different in that the forwarded transaction has a different slave
address. The address used on the upstream bus is called the "alias"
and is (potentially) different from the physical slave address of the
downstream chip.
Add a helper file (just like i2c-mux.c for a mux or switch) to allow
implementing ATR features in a device driver. The helper takes care of
adapter creation/destruction and translates addresses at each transaction.
Signed-off-by: Luca Ceresoli <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Acked-by: Wolfram Sang <[email protected]>
Signed-off-by: Sakari Ailus <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions