tree a580bd3fff0831628bc0d525d975853bbf25a86d
parent 0c2732152a5813a870d0b96f0844f4dfe1436519
author Xie Xiaobo <X.Xie@freescale.com> 1332493340 +0100
committer Jean Delvare <khali@endymion.delvare> 1332493340 +0100

hwmon: Add MCP3021 ADC driver

Add I2C driver for MCP3021 that is an ADC chip from Microchip.
The MCP3021 is a successive approximation A/D converter (ADC)
with 10-bit resolution.
The driver export the value of Vin to sysfs, the voltage unit is
mV. Through the sysfs interface, lm-sensors tool can also display
Vin voltage.

Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com>
Signed-off-by: Xie Xiaobo <X.Xie@freescale.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>