Introduce independent bus and device voting mechanism for clients and save hardware information from BHI. Allow reading and modifying some MHI variables for debug, test, and informational purposes using debugfs. Read values for device specific hardware information to be used by OEMs in factory testing such as serial number and PK hash using sysfs. This set of patches was tested on arm64 and x86. v3: -Add patch to check for pending packets in suspend as a dependency for the independent voting mechanism introduction -Include register dump entry for debugfs to dump MHI, BHI, and BHIe registers -Update commit message for the debugfs patch -Updated Documentation/ABI with the required info for sysfs -Updated debugfs patch to include a new KConfig entry and dependencies -Updated reviewed-by for some patches v2: -Added a new debugfs.c file for specific debugfs entries and code -Updated commit text and addressed some comments for voting change -Made sure sysfs is only used for serial number and OEM PK hash usage Bhaumik Bhatt (7): bus: mhi: core: Abort suspends due to outgoing pending packets bus: mhi: core: Introduce independent voting mechanism bus: mhi: core: Use generic name field for an MHI device bus: mhi: core: Introduce helper function to check device state bus: mhi: core: Introduce debugfs entries and counters for MHI bus: mhi: core: Read and save device hardware information from BHI bus: mhi: core: Introduce sysfs entries for MHI Documentation/ABI/stable/sysfs-bus-mhi | 25 ++ MAINTAINERS | 1 + drivers/bus/mhi/Kconfig | 8 + drivers/bus/mhi/core/Makefile | 5 +- drivers/bus/mhi/core/boot.c | 17 +- drivers/bus/mhi/core/debugfs.c | 501 +++++++++++++++++++++++++++++++++ drivers/bus/mhi/core/init.c | 80 +++++- drivers/bus/mhi/core/internal.h | 29 ++ drivers/bus/mhi/core/main.c | 6 +- drivers/bus/mhi/core/pm.c | 79 ++++-- include/linux/mhi.h | 39 ++- 11 files changed, 745 insertions(+), 45 deletions(-) create mode 100644 Documentation/ABI/stable/sysfs-bus-mhi create mode 100644 drivers/bus/mhi/core/debugfs.c -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
