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| author | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-07-31 22:08:53 +0200 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2019-07-31 22:16:17 +0200 |
| commit | e9bb627561535dd584b43a8c0afe93a67bc6a2c5 (patch) | |
| tree | ca91d46418c232f56b7f36010d6fe4317eb9d2ad /Documentation/w1/slaves/w1_ds2406 | |
| parent | docs: fs: cifs: convert to ReST and add to admin-guide book (diff) | |
| download | linux-e9bb627561535dd584b43a8c0afe93a67bc6a2c5.tar.xz linux-e9bb627561535dd584b43a8c0afe93a67bc6a2c5.zip | |
docs: w1: convert to ReST and add to the kAPI group of docs
The 1wire documentation was written with w1 developers in
mind, so, it makes sense to add it together with the driver-api
set.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/w1/slaves/w1_ds2406')
| -rw-r--r-- | Documentation/w1/slaves/w1_ds2406 | 25 |
1 files changed, 0 insertions, 25 deletions
diff --git a/Documentation/w1/slaves/w1_ds2406 b/Documentation/w1/slaves/w1_ds2406 deleted file mode 100644 index 8137fe6f6c3d..000000000000 --- a/Documentation/w1/slaves/w1_ds2406 +++ /dev/null @@ -1,25 +0,0 @@ -w1_ds2406 kernel driver -======================= - -Supported chips: - * Maxim DS2406 (and other family 0x12) addressable switches - -Author: Scott Alfter <scott@alfter.us> - -Description ------------ - -The w1_ds2406 driver allows connected devices to be switched on and off. -These chips also provide 128 bytes of OTP EPROM, but reading/writing it is -not supported. In TSOC-6 form, the DS2406 provides two switch outputs and -can be provided with power on a dedicated input. In TO-92 form, it provides -one output and uses parasitic power only. - -The driver provides two sysfs files. state is readable; it gives the -current state of each switch, with PIO A in bit 0 and PIO B in bit 1. The -driver ORs this state with 0x30, so shell scripts get an ASCII 0/1/2/3 to -work with. output is writable; bits 0 and 1 control PIO A and B, -respectively. Bits 2-7 are ignored, so it's safe to write ASCII data. - -CRCs are checked on read and write. Failed checks cause an I/O error to be -returned. On a failed write, the switch status is not changed. |