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author | 2021-03-11 11:11:54 +0200 | |
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committer | 2021-03-25 19:13:50 +0000 | |
commit | 7b8d045e497a04dd88546da51f34fa3b102778d2 (patch) | |
tree | b9feba3c1932fd02a4ac65d93d2c15218049adab /drivers/iio/trigger/iio-trig-sysfs.c | |
parent | iio: light: gp2ap002: Drop unneeded explicit casting (diff) | |
download | linux-7b8d045e497a04dd88546da51f34fa3b102778d2.tar.gz linux-7b8d045e497a04dd88546da51f34fa3b102778d2.tar.bz2 linux-7b8d045e497a04dd88546da51f34fa3b102778d2.zip |
iio: adc: ad7124: allow more than 8 channels
Currently AD7124-8 driver cannot use more than 8 IIO channels
because it was assigning the channel configurations bijectively
to channels specified in the device-tree. This is not possible
to do when using more than 8 channels as AD7124-8 has only 8
configuration registers.
To allow the user to use all channels at once the driver
will keep in memory configurations for all channels but
will program only 8 of them at a time on the device.
If multiple channels have the same configuration, only
one configuration register will be used. If there
are more configurations than available registers only
the last 8 used configurations will be allowed to exist
on the device in a LRU fashion.
Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20210311091154.47785-2-alexandru.tachici@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/trigger/iio-trig-sysfs.c')
0 files changed, 0 insertions, 0 deletions