linux-toradex.git/drivers/hwmon/adt7410.c, branch v3.17

hwmon: (adt7x10) Add alarm interrupt support

2013-04-08T04:16:38+00:00

This allows an userspace application to poll() on the alarm files to get
notified in case of a temperature threshold event.

Signed-off-by: Lars-Peter Clausen 
Reviewed-by: Hartmut Knaack 
Signed-off-by: Guenter Roeck

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

2013-04-08T04:16:38+00:00

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 
Reviewed-by: Hartmut Knaack 
Signed-off-by: Guenter Roeck

hwmon: (adt7410) Don't re-read non-volatile registers

2013-04-08T04:16:38+00:00

Currently each time the temperature register is read the driver also reads the
threshold and hysteresis registers. This increases the amount of I2C traffic and
time needed to read the temperature by a factor of ~5. Neither the threshold nor
the hysteresis change on their own, so once we have read them, we should be able
to just use the cached value of the registers. This patch modifies the code
accordingly and only reads the threshold and hysteresis registers once during
probe.

Signed-off-by: Lars-Peter Clausen 
Signed-off-by: Guenter Roeck

hwmon: (adt7410) Add device table entry for the adt7420

2013-02-20T01:34:16+00:00

The adt7420 is software compatible to the adt7410.

Signed-off-by: Lars-Peter Clausen 
Reviewed-by: Hartmut Knaack 
Signed-off-by: Guenter Roeck

hwmon: (adt7410) Use I2C_ADDRS helper macro

2013-02-20T01:34:16+00:00

Use the I2C_ADDRS macro to initialize the I2C device's address_list. Doing so
saves a few lines of boilerplate code.

Signed-off-by: Lars-Peter Clausen 
Reviewed-by: Hartmut Knaack 
Signed-off-by: Guenter Roeck

hwmon: (adt7410) Use the SIMPLE_DEV_PM_OPS helper macro

2013-02-20T01:34:15+00:00

Use the SIMPLE_DEV_PM_OPS macro to declare the driver's pm_ops.

Signed-off-by: Lars-Peter Clausen 
Reviewed-by: Hartmut Knaack 
Signed-off-by: Guenter Roeck

hwmon: (adt7410) Let suspend/resume depend on CONFIG_PM_SLEEP

2013-02-20T01:34:15+00:00

Only build the suspend/resume code if CONFIG_PM_SLEEP is selected. Currently the
code is built if CONFIG_PM is selected, but it will also be selected if only
runtime PM support is built into the kernel.

Signed-off-by: Lars-Peter Clausen 
Acked-by: Hartmut Knaack 
Signed-off-by: Guenter Roeck

hwmon: (adt7410) Clear unwanted bits in the config register

2013-02-20T01:34:15+00:00

Make sure to clear the mode bits from the config register before setting the new
mode. Otherwise we might end up with a different mode than we want to.

Signed-off-by: Lars-Peter Clausen 
Reviewed-by: Hartmut Knaack 
Signed-off-by: Guenter Roeck

hwmon: Replace SENSORS_LIMIT with clamp_val

2013-01-26T05:03:54+00:00

SENSORS_LIMIT and the generic clamp_val have the same functionality,
and clamp_val is more efficient.

This patch reduces text size by 9052 bytes and bss size by 11624 bytes
for x86_64 builds.

Signed-off-by: Guenter Roeck 
Acked-by: George Joseph 
Acked-by: Jean Delvare

hwmon: (adt7410) handle errors from adt7410_update_device()

2012-09-24T04:08:33+00:00

Smatch complains that adt7410_update_device() can return error pointers.

Signed-off-by: Dan Carpenter 
Signed-off-by: Guenter Roeck