[Intel-gfx] New Samsung driver for backlight control.

[Mike Lothian]

tau / # grep . /sys/class/dmi/id/*
/sys/class/dmi/id/bios_date:09/26/2008
/sys/class/dmi/id/bios_vendor:Phoenix Technologies Ltd.
/sys/class/dmi/id/bios_version:07LI.MP00.20080926.SCY
/sys/class/dmi/id/board_name:R510/P510
/sys/class/dmi/id/board_serial:123490EN400015
/sys/class/dmi/id/board_vendor:SAMSUNG ELECTRONICS CO., LTD.
/sys/class/dmi/id/board_version:Not Applicable
/sys/class/dmi/id/chassis_asset_tag:No Asset Tag
/sys/class/dmi/id/chassis_serial:None
/sys/class/dmi/id/chassis_type:10
/sys/class/dmi/id/chassis_vendor:SAMSUNG ELECTRONICS CO., LTD.
/sys/class/dmi/id/chassis_version:N/A
/sys/class/dmi/id/modalias:dmi:bvnPhoenixTechnologiesLtd.:bvr07LI.MP00.20080926.SCY:bd09/26/2008:svnSAMSUNGELECTRONICSCO.,LTD.:pnR510/P510:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR510/P510:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A:
/sys/class/dmi/id/product_name:R510/P510
/sys/class/dmi/id/product_serial:EJ1893DQ700599
/sys/class/dmi/id/product_uuid:60B6C327-D21D-B211-8000-B5CE02D5709F
/sys/class/dmi/id/product_version:Not Applicable
/sys/class/dmi/id/sys_vendor:SAMSUNG ELECTRONICS CO., LTD.
/sys/class/dmi/id/uevent:MODALIAS=dmi:bvnPhoenixTechnologiesLtd.:bvr07LI.MP00.20080926.SCY:bd09/26/2008:svnSAMSUNGELECTRONICSCO.,LTD.:pnR510/P510:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR510/P510:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A:

This is the info you requested

I've sent it before

Is there a way to make the brightness more finer controlled using this
interface?

Regards

Mike

2009/8/26 Greg KH <greg at kroah.com>:
> On Sat, Aug 22, 2009 at 10:27:58AM +0100, Mike Lothian wrote:
>> I can confirm that it works however it does have different behaviour
>>
>> At the lowest setting the backlight is still on and the screen even
>> though dull is still readable with the previous patch the screen was
>> black
>>
>> This is what it says in my dmesg:
>>
>> This computer supports SABI==f494d
>> SABI header:
>>  SMI Port Number = 0x00b2
>>  SMI Interface Function = 0xc0
>>  SMI enable memory buffer = 0xc1
>>  SMI restore memory buffer = 0xc2
>>  SABI data offset = 0x0f00
>>  SABI data segment = 0xdf01
>>  BIOS interface version = 0x32
>>  KBD Launcher string = 0x53
>> SABI Interface = ffff8800000dff10
>> Model Name R510
>> backlight = 0x01
>> wireless button = 0x01
>> brightness = 0x08
>> etiquette mode = 0x00
>> cpu temp = 0x45
>
> Thanks.
>
> Can you provide me the output of:
>        grep . /sys/class/dmi/id/*
>
> So I can add this laptop to the driver?
>
>> Do you have any idea why my brightness buttons aren't working correctly?
>
> See the other responses, they are working "correctly" now, a 0 setting
> will not turn off the light, as it is not supposed to.
>
> thanks,
>
> greg k-h
>