[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>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 43e1f082f7be..0e31a0c496e8 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -204,6 +204,16 @@ config SENSORS_LM63
           This driver can also be built as a module.  If so, the module
           will be called lm63.
 
+config SENSORS_LM70
+        tristate "National Semiconductor LM70"
+        depends on HWMON && SPI_MASTER && EXPERIMENTAL
+        help
+          If you say yes here you get support for the National Semiconductor
+          LM70 digital temperature sensor chip.
+
+          This driver can also be built as a module.  If so, the module
+          will be called lm70.
+
 config SENSORS_LM75
         tristate "National Semiconductor LM75 and compatibles"
         depends on HWMON && I2C