>>>>> In <20081028014708.GA2649@xxxxxxxxxxxxxxxxxxxxxxxx>
>>>>> Norbert Preining <preining@xxxxxxxx> wrote:
>> Hi Mattia,
>>
>> (taking the MMC guy out, this is not about the SD card reader anymore)
>>
>> On Di, 28 Okt 2008, Mattia Dongili wrote:
>> > Yes, I am. But I have no idea what might be wrong. Did you also try
>> > xbacklight while in X and using the Intel card?
>>
>> I am a step further on. Thanks to Ishikawa-san I have an sony-laptop.c
>> file which allows setting the backlight using the
>> /sys/devices/backlight/{sony,acpi_video0}/backlight files
>> (interestingly, they do not agree on their behaviour, xbacklight can
>> change in 12.5% jumps, that makes 9 different values, but allowed are
>> only 8 (from 0 to 7). In sony the 0% is missing, in acpi_video0 the 100%
>> is missing -- i.e., sony/brightness 0 is brighter than
>> acpi_video0/brightness 0, and so on).
There are two points of roblems to enable backlight control on VGN-Z
1)
VGN-Z have SNC, but it is not enabled.
- prevoius patch posted.
- add VGN-Z entry to sony_nc_ids table
2)
In sony_pic_detect_device_type() function, VGN-Z's SPIC is
detected as SONYPI_DEVICE_TYPE2 (per default).
But it does not work for me.
I've checkd throug TYPE1 to TYPE4. Only Type3 and Type4 does
work (but it is possible to control backlight only, other
function does not work...)
I do not have datasheet for this model, but I think SPIC on
this model is not TYPE2. It is same or variant of Type3 or
Type4 SPIC.
I put this quick dirty hack code on URL bellow:
http://hanzubon.jp/tmp/VGN-Z90S/sony-laptop.c
Two kinds of change set are included:
- add VGN-Z entry to sony_nc_ids
- add type5 SPIC table (currently same as Type4) and
use it on VGN-Z.
--
ISHIKAWA Mutsumi
<ishikawa@xxxxxxxxxx>, <ishikawa@xxxxxxxxxxx>, <ishikawa@xxxxxxx>
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