Change Since v1:
(1) Add driver/usb/core/port.c file and move usb port related code
into new file.
(2) Modify usb port's runtime pm callback and set/clear PORT_POWER
feature in the resume/suspend callback.
(3) Power off port through suspend port device instead of setting/
clearing PORT_POWER feature.
Existing problem:
When pm qos flags is updating, pm core will do
pm_runtime_get_sync(port_dev)
and pm_runtime_put(port_dev). Currently port's runtime pm callback set/clear
PORT_POWER
feature. This will cause alwas port power off after port's pm qos flags being
changed.
This patchset is to add usb port power off mechanism.
The main discussion is in the following link:
http://marc.info/?l=linux-usb&m=134818340017208&w=2
The patchset is based on the pm qos flags patches on the linux-pm's next tree
and pm-qos
http://git.kernel.org/?p=linux/kernel/git/rafael/linux-pm.git;a=shortlog;h=refs/heads/pm-qos
and patchset "usb: expose DeviceRemovable to user space via sysfs attribute"
http://marc.info/?l=linux-usb&m=135234231804002&w=2
usb: add usb port's pm qos flags request to change NO_POWER_OFF flag
usb: expose usb port's pm qos flags to user space
usb: add usb port auto power off mechanism
usb: add runtime pm support for usb port device
usb: Add driver/usb/core/port.c file to fill usb port related code.
usb: Register usb port's acpi power resources
drivers/usb/core/Makefile | 1 +
drivers/usb/core/hub.c | 235
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------------------------------------------------------------
drivers/usb/core/port.c | 142
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
drivers/usb/core/usb-acpi.c | 22 +++++++++++++++++
drivers/usb/core/usb.h | 11 +++++++++
include/linux/usb.h | 23 ++++++++++++++++++
6 files changed, 338 insertions(+), 96 deletions(-)
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