| Thomas Renninger | cd89e08 | 2010-07-16 13:11:37 +0200 | [diff] [blame] | 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. |