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| author | Kaiwan N Billimoria <kaiwan@designergraphix.com> | 2006-06-12 22:00:05 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-06-22 11:10:35 -0700 |
| commit | e1a8e913f97e36cc5a23a24a8b4717e84998f13c (patch) | |
| tree | 3ee23138ab7acba7a8ceb8f38f14eecac055141e /Documentation/hwmon/lm70 | |
| parent | 060b2f5584bf3bbb0268c83c24d5a506780fb702 (diff) | |
| download | lwn-e1a8e913f97e36cc5a23a24a8b4717e84998f13c.tar.gz lwn-e1a8e913f97e36cc5a23a24a8b4717e84998f13c.zip | |
[PATCH] lm70: New hardware monitoring driver
This driver implements support for the National Semiconductor LM70
temperature sensor.
The LM70 temperature sensor chip supports a single temperature sensor.
It communicates with a host processor (or microcontroller) via an
SPI/Microwire Bus interface.
Communication with the LM70 is simple: when the temperature is to be sensed,
the driver accesses the LM70 using SPI communication: 16 SCLK cycles
comprise the MOSI/MISO loop. At the end of the transfer, the 11-bit 2's
complement digital temperature (sent via the SIO line), is available in the
driver for interpretation. This driver makes use of the kernel's in-core
SPI support.
Signed-off-by: Kaiwan N Billimoria <kaiwan@designergraphix.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/hwmon/lm70')
| -rw-r--r-- | Documentation/hwmon/lm70 | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/Documentation/hwmon/lm70 b/Documentation/hwmon/lm70 new file mode 100644 index 000000000000..2bdd3feebf53 --- /dev/null +++ b/Documentation/hwmon/lm70 @@ -0,0 +1,31 @@ +Kernel driver lm70 +================== + +Supported chip: + * National Semiconductor LM70 + Datasheet: http://www.national.com/pf/LM/LM70.html + +Author: + Kaiwan N Billimoria <kaiwan@designergraphix.com> + +Description +----------- + +This driver implements support for the National Semiconductor LM70 +temperature sensor. + +The LM70 temperature sensor chip supports a single temperature sensor. +It communicates with a host processor (or microcontroller) via an +SPI/Microwire Bus interface. + +Communication with the LM70 is simple: when the temperature is to be sensed, +the driver accesses the LM70 using SPI communication: 16 SCLK cycles +comprise the MOSI/MISO loop. At the end of the transfer, the 11-bit 2's +complement digital temperature (sent via the SIO line), is available in the +driver for interpretation. This driver makes use of the kernel's in-core +SPI support. + +Thanks to +--------- +Jean Delvare <khali@linux-fr.org> for mentoring the hwmon-side driver +development. |