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hwmon: (adt7410) Add support for the adt7310/adt7320

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The adt7310/adt7320 is the SPI version of the adt7410/adt7420. The register map
layout is a bit different, i.e. the register addresses differ between the two
variants, but the bit layouts of the individual registers are identical. So both
chip variants can easily be supported by the same driver. The issue of non
matching register address layouts is solved by a simple look-up table which
translates the I2C addresses to the SPI addresses.

The patch moves the bulk of the adt7410 driver to a common module that will be
shared by the adt7410 and adt7310 drivers. This common module implements the
driver logic and uses a set of virtual functions to perform IO access. The
adt7410 and adt7310 driver modules provide proper implementations of these IO
accessor functions for I2C respective SPI.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Lars-Peter Clausen
2013-03-12 11:38:46 +01:00
committed by Guenter Roeck
parent c55dc91e92
commit 51c2a4871c
7 changed files with 726 additions and 460 deletions
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20
drivers/hwmon/Kconfig
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@@ -179,9 +179,29 @@ config SENSORS_ADM9240
This driver can also be built as a module. If so, the module
will be called adm9240.
config SENSORS_ADT7X10
tristate
help
This module contains common code shared by the ADT7310/ADT7320 and
ADT7410/ADT7420 temperature monitoring chip drivers.
If build as a module, the module will be called adt7x10.
config SENSORS_ADT7310
tristate "Analog Devices ADT7310/ADT7320"
depends on SPI_MASTER
select SENSORS_ADT7X10
help
If you say yes here you get support for the Analog Devices
ADT7310 and ADT7320 temperature monitoring chips.
This driver can also be built as a module. If so, the module
will be called adt7310.
config SENSORS_ADT7410
tristate "Analog Devices ADT7410/ADT7420"
depends on I2C
select SENSORS_ADT7X10
help
If you say yes here you get support for the Analog Devices
ADT7410 and ADT7420 temperature monitoring chips.