[lm-sensors] Support for sch311x

Juerg Haefliger juergh at gmail.com
Tue Jul 17 00:00:58 CEST 2007


Hi Marcin,


> Hi Juerg,
>
> Thank you.
>
> I've done short test of your driver and at first sight it seems to work
> quite well with SCH3112. It was tested on CP6012 CPU board from Kontron.

Very good, thanks a lot.


> I found some issues which should be improved. One of those is resetting
> of alarms. Now, after alarm appeared it remains set - it is not cleared
> by sensor reading. (maybe not perfect but simplest would be resetting
> all alarms after sensors are read - look into my driver)

Good catch. Looks like the sch311x and dme1737 differ in that area.
The dme1737 clears the interrupt bits on a register read while the
sch311x requires and explicit write. I'll add that to the updated
driver.


> I think that temperature fault reading return improper values (see
> printout below).

You're right, that is strange. Will check it.

Could you also please test that repeated loading and unloading of the
driver works? Just to make sure the init and cleanup stuff is working
correctly.

Thanks
...juerg



> Below is short snapshot of test:
> .....
> marcda at marcda-laptop:/lib/modules/2.6.22/kernel/drivers/hwmon$ sudo
> modprobe dme1737
> Password:
> marcda at marcda-laptop:/lib/modules/2.6.22/kernel/drivers/hwmon$
> .....
>
> .....
> marcda at marcda-laptop:/lib/modules/2.6.22/kernel/drivers/hwmon$ dmesg |tail
> [   26.916000] Bluetooth: HCI socket layer initialized
> [   27.016000] Bluetooth: L2CAP ver 2.8
> [   27.016000] Bluetooth: L2CAP socket layer initialized
> [   27.052000] Bluetooth: RFCOMM socket layer initialized
> [   27.052000] Bluetooth: RFCOMM TTY layer initialized
> [   27.052000] Bluetooth: RFCOMM ver 1.8
> [   33.604000] eth5: no IPv6 routers present
> [ 3879.928000] PM: Adding info for platform:dme1737.2672
> [ 3879.928000] dme1737 dme1737.2672: Found a SCH311X chip at 0x0a70
> [ 3879.928000] dme1737 dme1737.2672: Optional features: pwm3=yes,
> pwm5=no, pwm6=no, fan3=yes, fan4=no, fan5=no, fan6=no.
> marcda at marcda-laptop:/lib/modules/2.6.22/kernel/drivers/hwmon$
> .....
>
> .....
> root at marcda-laptop:/sys/class/hwmon/hwmon0/device/driver/dme1737.2672#
> clear;for file in *_*; do echo "$file = `cat $file`"; done     cpu0_vid = 0
> fan1_alarm = 0
> fan1_input = 0
> fan1_min = 0
> fan1_type = 2
> fan2_alarm = 0
> fan2_input = 0
> fan2_min = 0
> fan2_type = 2
> fan3_alarm = 0
> fan3_input = 0
> fan3_min = 0
> fan3_type = 2
> in0_alarm = 0
> in0_input = 3610
> in0_max = 6641
> in0_min = 0
> in1_alarm = 0
> in1_input = 1625
> in1_max = 2988
> in1_min = 0
> in2_alarm = 1
> in2_input = 3303
> in2_max = 3334
> in2_min = 0
> in3_alarm = 0
> in3_input = 4993
> in3_max = 6641
> in3_min = 0
> in4_alarm = 0
> in4_input = 11965
> in4_max = 15938
> in4_min = 0
> in5_alarm = 0
> in5_input = 3309
> in5_max = 4383
> in5_min = 0
> in6_alarm = 0
> in6_input = 2983
> in6_max = 4383
> in6_min = 0
> pwm1_auto_channels_zone = 1
> pwm1_auto_point1_pwm = 128
> pwm1_auto_point2_pwm = 255
> pwm1_auto_pwm_min = 128
> pwm1_enable = 0
> pwm1_freq = 25000
> pwm1_ramp_rate = 206
> pwm2_auto_channels_zone = 2
> pwm2_auto_point1_pwm = 128
> pwm2_auto_point2_pwm = 255
> pwm2_auto_pwm_min = 128
> pwm2_enable = 0
> pwm2_freq = 25000
> pwm2_ramp_rate = 206
> pwm3_auto_channels_zone = 4
> pwm3_auto_point1_pwm = 128
> pwm3_auto_point2_pwm = 255
> pwm3_auto_pwm_min = 128
> pwm3_enable = 0
> pwm3_freq = 25000
> pwm3_ramp_rate = 0
> temp1_alarm = 0
> temp1_fault = 0
> temp1_input = 35562
> temp1_max = 127000
> temp1_min = -127000
> temp1_offset = 0
> temp2_alarm = 0
> temp2_fault = 0
> temp2_input = 33750
> temp2_max = 127000
> temp2_min = -127000
> temp2_offset = 0
> temp3_alarm = 1
> temp3_fault = 0
> temp3_input = -128000
> temp3_max = 127000
> temp3_min = -127000
> temp3_offset = 0
> zone1_auto_channels_temp = 1
> zone1_auto_point1_temp = 90000
> zone1_auto_point1_temp_hyst = 90000
> zone1_auto_point2_temp = 122000
> zone1_auto_point3_temp = 100000
> zone2_auto_channels_temp = 2
> zone2_auto_point1_temp = 90000
> zone2_auto_point1_temp_hyst = 90000
> zone2_auto_point2_temp = 122000
> zone2_auto_point3_temp = 100000
> zone3_auto_channels_temp = 4
> zone3_auto_point1_temp = 90000
> zone3_auto_point1_temp_hyst = 90000
> zone3_auto_point2_temp = 122000
> zone3_auto_point3_temp = 100000
> root at marcda-laptop:/sys/class/hwmon/hwmon0/device/driver/dme1737.2672#
> .....
>
> I will let you know if I find something more.
>
> Regards,
> Marcin
>
> Juerg Haefliger wrote:
> > Hi Marcin,
> >
> > The attached updated dme1737 driver includes support for the sch311x
> > chips. Could you please test it and report success/failure?
> >
> > Thanks
> > ...juerg
>
>




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