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cd89e08f TR |
1 | What: /sys/kernel/debug/ec/*/{gpe,use_global_lock,io} |
2 | Date: July 2010 | |
3 | Contact: Thomas Renninger <trenn@suse.de> | |
4 | Description: | |
5 | ||
6 | General information like which GPE is assigned to the EC and whether | |
7 | the global lock should get used. | |
8 | Knowing the EC GPE one can watch the amount of HW events related to | |
9 | the EC here (XY -> GPE number from /sys/kernel/debug/ec/*/gpe): | |
10 | /sys/firmware/acpi/interrupts/gpeXY | |
11 | ||
12 | The io file is binary and a userspace tool located here: | |
13 | ftp://ftp.suse.com/pub/people/trenn/sources/ec/ | |
14 | should get used to read out the 256 Embedded Controller registers | |
15 | or writing to them. | |
16 | ||
17 | CAUTION: Do not write to the Embedded Controller if you don't know | |
18 | what you are doing! Rebooting afterwards also is a good idea. | |
19 | This can influence the way your machine is cooled and fans may | |
20 | not get switched on again after you did a wrong write. |