4 Commits (acpi-pr3)

Author	SHA1	Message	Date
Peter Wu	fe3f58c15f	bbswitch_dev: disable runtime PM on removal ... Call pm_runtime_forbid() to balance it with pm_runtime_allow(), this ensures that the runtime usage counter before loading and after unloading match.	9 years ago
Peter Wu	fb3d5a614a	bbswitch_dev: use autosuspend to avoid sleeping too fast	9 years ago
Peter Wu	fd774b1f5e	bbswitch_dev: remove artificial delays ... These delays were added as attempt to rule out the possibility that the hardware was accessed too fast, but it does not seem to help. Remove it.	9 years ago
Peter Wu	daa6411911	[DO NOT MERGE] [WIP] Add PCI driver ... This is work in progress, I intend to merge the bbswitch_dev code into the main module. Some comments in README and bbswitch.c might be stale. Create a PCI driver such that runtime PM works. Without a bound driver, the kernel assumes that the device is D0 state during suspend (which therefore needs the notifier hack in bbswitch) but more importantly, it will prevent the PCIe port from going to sleep in Linux v4.7. Currently I use this to debug an infinite loop on my Clevo P651RA laptop, it can be loaded as follows: make modname=bbswitch_dev insmod bbswitch_dev.ko echo > /sys/bus/pci/drivers/bbswitch/new_id 10de 13d9 Needs Mika's pci/pm series ("PCI: Put PCIe ports into D3 during suspend"), qeued for v4.7 via https://git.kernel.org/cgit/linux/kernel/git/helgaas/pci.git/commit/?h=pci/pm	9 years ago