This patch set fixes and improves the Partial Power Down mode for dwc2 core. It adds support for the following cases 1. Entering and exiting partial power down when a port is suspended, resumed, port reset is asserted. 2. Exiting the partial power down mode before removing driver. 3. Exiting partial power down in wakeup detected interrupt handler. 4. Exiting from partial power down mode when connector ID. status changes to "connId B
It updates and fixes the implementation of dwc2 entering and exiting partial power down mode when the system (PC) is suspended.
The patch set also improves the implementation of function handlers for entering and exiting host or device partial power down.
NOTE: This is the second patch set in the power saving mode fixes series. This patch set is part of multiple series and is continuation of the "usb: dwc2: Fix and improve power saving modes" patch set. (Patch set link: https://marc.info/?l=linux-usb&m=160379622403975&w=2). The patches that were included in the "usb: dwc2: Fix and improve power saving modes" which was submitted earlier was too large and needed to be split up into smaller patch sets.
Changes since V2: No changes in the patches or the source code. Assuming that the issue due to which the patches are not reaching to vger.kernel.org is a comma in the end of To: or Cc: lists removed commas in the end of those lists in each email of patches.
Artur Petrosyan (14): usb: dwc2: Add device partial power down functions usb: dwc2: Add host partial power down functions usb: dwc2: Update enter and exit partial power down functions usb: dwc2: Add partial power down exit flow in wakeup intr. usb: dwc2: Update port suspend/resume function definitions. usb: dwc2: Add enter partial power down when port is suspended usb: dwc2: Add exit partial power down when port is resumed usb: dwc2: Add exit partial power down when port reset is asserted usb: dwc2: Add part. power down exit from dwc2_conn_id_status_change(). usb: dwc2: Allow exit partial power down in urb enqueue usb: dwc2: Fix session request interrupt handler usb: dwc2: Update partial power down entering by system suspend usb: dwc2: Fix partial power down exiting by system resume usb: dwc2: Add exit partial power down before removing driver
drivers/usb/dwc2/core.c | 113 ++------- drivers/usb/dwc2/core.h | 27 ++- drivers/usb/dwc2/core_intr.c | 46 ++-- drivers/usb/dwc2/gadget.c | 148 ++++++++++- drivers/usb/dwc2/hcd.c | 458 +++++++++++++++++++++++++---------- drivers/usb/dwc2/hw.h | 1 + drivers/usb/dwc2/platform.c | 11 +- 7 files changed, 558 insertions(+), 246 deletions(-)
base-commit: e9fcb07704fcef6fa6d0333fd2b3a62442eaf45b