diff options
| author |   Angelo Dureghello <angelo.dureghello@timesys.com> | 2019-10-19 22:40:15 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-14 13:06:33 +0800 |
| commit | c6bf3842a34abe3ec2f5bc81754883689aea6c0d (patch) | |
| tree | 3c5b8911d51cb4c06b72fb46f761180590e28c04 /drivers/w1/slaves/Kconfig | |
| parent | pcmcia: include cs_internal.h for missing declarations (diff) | |
| download | linux-dev-c6bf3842a34abe3ec2f5bc81754883689aea6c0d.tar.xz linux-dev-c6bf3842a34abe3ec2f5bc81754883689aea6c0d.zip | |
w1: new driver. DS2430 chip
add support for ds2430, 1 page, 256bit (32bytes) eeprom
(family 0x14).
Tests done:
32 bytes dump:
x@y:~# hexdump -C -n 32 /sys/bus/w1/devices/14-00000158556e/eeprom
00000000 39 39 0a 00 00 36 0a ff ff ff ff ff ff ff ff ff
00000010 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
00000020
34 bytes dump: 32 only displayed
x@y:~# hexdump -C -n 34 /sys/bus/w1/devices/14-00000158556e/eeprom
00000000 39 39 0a 00 00 36 0a ff ff ff ff ff ff ff ff ff
00000010 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
00000020
pattern write:
x@y:~# echo 123456789 > /sys/bus/w1/devices/14-00000158556e/eeprom
x@y:~# hexdump -C -n 54 /sys/bus/w1/devices/14-00000158556e/eeprom
00000000 31 32 33 34 35 36 37 38 39 0a ff ff ff ff ff ff
00000010 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
00000020
specific address 1-byte write
x@y:~# dd if=/dev/zero of=/sys/bus/w1/devices/14-00000158556e/eeprom \
count=1 bs=1 seek=4
1+0 records in
1+0 records out
x@y:~# hexdump -C -n 54 /sys/bus/w1/devices/14-00000158556e/eeprom
00000000 31 32 33 34 00 36 37 38 39 0a ff ff ff ff ff ff
00000010 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
00000020
writing binary block
x@y:~# cat dump-128bytes.bin > /sys/bus/w1/devices/14-00000158556e/eeprom
cat: write error: File too large
x@y:~# cat dump-32bytes.bin > /sys/bus/w1/devices/14-00000158556e/eeprom
x@y:~# hexdump -C -n 54 /sys/bus/w1/devices/14-00000158556e/eeprom
00000000 10 0b 5b ff ff ff ff ff ff ff ff ff ff ff ff ff
00000010 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 40
00000020
Signed-off-by: Angelo Dureghello <angelo.dureghello@timesys.com>
Link: https://lore.kernel.org/r/20191019204015.61474-1-angelo.dureghello@timesys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/w1/slaves/Kconfig')
| -rw-r--r-- | drivers/w1/slaves/Kconfig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/w1/slaves/Kconfig b/drivers/w1/slaves/Kconfig index b7847636501d..687753889c34 100644 --- a/drivers/w1/slaves/Kconfig +++ b/drivers/w1/slaves/Kconfig @@ -74,6 +74,14 @@ config W1_SLAVE_DS2805 organized as 7 pages of 16 bytes each with 64bit unique number. Requires OverDrive Speed to talk to. +config W1_SLAVE_DS2430 + tristate "256b EEPROM family support (DS2430)" + help + Say Y here if you want to use a 1-wire 256bit EEPROM + family device (DS2430). + This EEPROM is organized as one page of 32 bytes for random + access. + config W1_SLAVE_DS2431 tristate "1kb EEPROM family support (DS2431)" help |