linux-toradex.git/drivers/hwmon, branch v4.14-rc7

hwmon: (tmp102) Fix first temperature reading

2017-10-24T13:17:14+00:00

Commit 3d8f7a89a197 ("hwmon: (tmp102) Improve handling of initial read
delay") reduced the initial temperature read delay and made it dependent
on the chip's shutdown mode. If the chip was not in shutdown mode at probe,
the read delay no longer applies.

This ignores the fact that the chip initialization changes the temperature
sensor resolution, and that the temperature register values change when
the resolution is changed. As a result, the reported temperature is twice
as high as the real temperature until the first temperature conversion
after the configuration change is complete. This can result in unexpected
behavior and, worst case, in a system shutdown. To fix the problem,
let's just always wait for a conversion to complete before reporting
a temperature.

Fixes: 3d8f7a89a197 ("hwmon: (tmp102) Improve handling of initial read delay")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=197167
Reported-by: Ralf Goebel 
Cc: Ralf Goebel 
Reviewed-by: Jean Delvare 
Signed-off-by: Guenter Roeck

hwmon: (da9052) Increase sample rate when using TSI

2017-10-21T16:03:29+00:00

The TSI channel, which is usually used for touchscreen support, but can
be used as 4 general purpose ADCs. When used as a touchscreen interface
the touchscreen driver switches the device into 1ms sampling mode (rather
than the default 10ms economy mode) as recommended by the manufacturer.
When using the TSI channels as a general purpose ADC we are currently not
doing this and testing suggests that this can result in ADC timeouts:

[ 5827.198289] da9052 spi2.0: timeout waiting for ADC conversion interrupt
[ 5827.728293] da9052 spi2.0: timeout waiting for ADC conversion interrupt
[ 5993.808335] da9052 spi2.0: timeout waiting for ADC conversion interrupt
[ 5994.328441] da9052 spi2.0: timeout waiting for ADC conversion interrupt
[ 5994.848291] da9052 spi2.0: timeout waiting for ADC conversion interrupt

Switching to the 1ms timing resolves this issue.

Fixes: 4f16cab19a3d5 ("hwmon: da9052: Add support for TSI channel")
Signed-off-by: Martyn Welch 
Acked-by: Steve Twiss 
Signed-off-by: Guenter Roeck

hwmon: (xgene) Fix up error handling path mixup in 'xgene_hwmon_probe()'

2017-10-01T15:46:54+00:00

Commit 2ca492e22cb7 has moved the call to 'kfifo_alloc()' from after the
main 'if' statement to before it.
But it has not updated the error handling paths accordingly.

Fix all that:
   - if 'kfifo_alloc()' fails we can return directly
   - direct returns after 'kfifo_alloc()' must now go to 'out_mbox_free'
   - 'goto out_mbox_free' must be replaced by 'goto out', otherwise the
     '[pcc_]mbox_free_channel()' call will be missed.

Fixes: 2ca492e22cb7 ("hwmon: (xgene) Fix crash when alarm occurs before driver probe")
Signed-off-by: Christophe JAILLET 
Signed-off-by: Guenter Roeck

dmi: Mark all struct dmi_system_id instances const

2017-09-14T09:59:30+00:00

... and __initconst if applicable.

Based on similar work for an older kernel in the Grsecurity patch.

[JD: fix toshiba-wmi build]
[JD: add htcpen]
[JD: move __initconst where checkscript wants it]

Signed-off-by: Christoph Hellwig 
Signed-off-by: Jean Delvare

hwmon: (ltq-cputemp) add cpu temp sensor driver

2017-09-01T14:24:14+00:00

Add the lantiq cpu temperature sensor support for xrx200.

Signed-off-by: Florian Eckert 
Signed-off-by: Guenter Roeck

hwmon: (pmbus) Add support for Texas Instruments tps53679 device

2017-08-31T01:01:08+00:00

The below lists of VOUT_MODE command readout with their related VID
protocols, Digital to Analog Converter steps, supported by the device:
VR12.0 mode, 5-mV DAC - 0x21
VR12.5 mode, 10-mV DAC - 0x22
VR13.0 mode, 10-mV DAC - 0x24
IMVP8 mode, 5-mV DAC - 0x25
VR13.0 mode, 5-mV DAC - 0x27

Signed-off-by: Vadim Pasternak 
Signed-off-by: Guenter Roeck

Merge remote-tracking branch 'lee/ib-mfd-hwmon-4.14' into hwmon-next

2017-08-30T13:32:01+00:00

hwmon: (asc7621) make several arrays static const

2017-08-30T13:31:49+00:00

Don't populate the arrays on the stack, instead make them static.
Makes the object code smaller by over 950 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  26144	  18768	    352	  45264	   b0d0	drivers/hwmon/asc7621.o

After:
   text	   data	    bss	    dec	    hex	filename
  25029	  18928	    352	  44309	   ad15	drivers/hwmon/asc7621.o

Signed-off-by: Colin Ian King 
Signed-off-by: Guenter Roeck

hwmon: (pmbus/lm25066) Add support for TI LM5066I

2017-08-30T13:31:13+00:00

The TI LM5066I hotswap controller is a more accurate version of the
LM5066 device already supported. It has different measurement conversion
coefficients than the LM5066, so it needs to be recognized as a
different device.

Signed-off-by: Xo Wang 
Signed-off-by: Guenter Roeck

hwmon: (pmbus/lm25066) Offset coefficient depends on CL

2017-08-30T13:31:12+00:00

When converting the DIRECT format CURRENT_IN and POWER commands, make
the offset coefficient ("b") predicate on the value of the current limit
setting.

Signed-off-by: Xo Wang 
Signed-off-by: Guenter Roeck