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Subject[PATCH 00/29] MHI changes for v5.11
Date
Hi Greg,

Here is the MHI patch series for v5.11. It was a busy cycle for us and so far we
have accumulated almost 29 patches. Most of the patches are cleanups and fixes
but there are some noticeable changes too:

1. Loic finally removed the auto-start option from the channel parameters of the
MHI controller. It is the duty of the client drivers like qrtr to start/stop the
channels when required, so we decided to remove this option. As a side effect,
we changed the qrtr driver to start the channels during its probe and removed
the auto-start option from ath11k controller.

**NOTE** Since these changes spawns both MHI and networking trees, the patches
are maintained in an immutable branch [1] and pulled into both mhi-next and
ath11k-next branches. The networking patches got acks from ath11k and networking
maintainers as well.

2. Loic added a generic MHI pci controller driver. This driver will be used by
the PCI based Qualcomm modems like SDX55 and exposes channels such as QMI,
IP_HW0, IPCR etc...

3. Loic fixed the MHI device hierarchy by maintaining the correct parent child
relationships. Earlier all MHI devices lived in the same level under the parent
device like PCIe. But now, the MHI devices belonging to channels will become the
children of controller MHI device.

4. Finally Loic also improved the MHI device naming by using indexed names such
as mhi0, mhi1, etc... This will break the userspace applications depending on
the old naming convention but since the only one user so far is Jeff Hugo's AI
accelerator apps, we decided to make this change now itself with his agreement.

5. Bhaumik fixed the qrtr driver by stopping the channels during remove. This
patch also got ack from networking maintainer and we decided to take it through
MHI tree (via immutable branch) since we already had a qrtr change.

Please consider applying!

Thanks,
Mani

[1] https://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi.git/log/?h=mhi-ath11k-immutable

Bhaumik Bhatt (19):
bus: mhi: core: Remove unnecessary counter from mhi_firmware_copy()
bus: mhi: core: Add missing EXPORT_SYMBOL for mhi_get_mhi_state()
bus: mhi: core: Expose mhi_get_exec_env() API for controllers
bus: mhi: core: Remove unused mhi_fw_load_worker() declaration
bus: mhi: core: Rename RDDM download function to use proper words
bus: mhi: core: Skip RDDM download for unknown execution environment
bus: mhi: core: Use appropriate names for firmware load functions
bus: mhi: core: Move to using high priority workqueue
bus: mhi: core: Skip device wake in error or shutdown states
bus: mhi: core: Move to SYS_ERROR regardless of RDDM capability
bus: mhi: core: Prevent sending multiple RDDM entry callbacks
bus: mhi: core: Move to an error state on any firmware load failure
bus: mhi: core: Use appropriate label in firmware load handler API
bus: mhi: core: Move to an error state on mission mode failure
bus: mhi: core: Check for IRQ availability during registration
bus: mhi: core: Separate system error and power down handling
bus: mhi: core: Mark and maintain device states early on after power
down
bus: mhi: core: Remove MHI event ring IRQ handlers when powering down
net: qrtr: Unprepare MHI channels during remove

Carl Yin (1):
bus: mhi: core: Fix null pointer access when parsing MHI configuration

Dan Carpenter (1):
bus: mhi: core: Fix error handling in mhi_register_controller()

Jeffrey Hugo (1):
bus: mhi: core: fix potential operator-precedence with BHI macros

Loic Poulain (7):
bus: mhi: Remove auto-start option
net: qrtr: Start MHI channels during init
bus: mhi: Add MHI PCI support for WWAN modems
bus: mhi: Fix channel close issue on driver remove
bus: mhi: core: Indexed MHI controller name
bus: mhi: core: Fix device hierarchy
mhi: pci_generic: Fix implicit conversion warning

--
2.25.1

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