linux-stable.git/include/linux/mhi.h, branch v5.10.78

bus: mhi: Remove unused nr_irqs_req variable

2020-10-02T09:33:47+00:00

nr_irqs_req is unused in MHI stack.

Reviewed-by: Manivannan Sadhasivam 
Signed-off-by: Loic Poulain 
Signed-off-by: Manivannan Sadhasivam 
Link: https://lore.kernel.org/r/20200929175218.8178-18-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman

bus: mhi: core: Introduce debugfs entries for MHI

2020-10-02T09:33:47+00:00

Introduce debugfs entries to show state, register, channel, device,
and event rings information. Allow the host to dump registers,
issue device wake, and change the MHI timeout to help in debug.

Reviewed-by: Manivannan Sadhasivam 
Signed-off-by: Bhaumik Bhatt 
Signed-off-by: Manivannan Sadhasivam 
Link: https://lore.kernel.org/r/20200929175218.8178-15-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman

bus: mhi: Remove include of rwlock_types.h

2020-10-02T09:33:47+00:00

rwlock.h should not be included directly. Instead linux/splinlock.h
should be included. Including it directly will break the RT build.

Also there is no point in including _types.h headers directly. There is
no benefit in including the type without the accessor.

Fixes: 0cbf260820fa7 ("bus: mhi: core: Add support for registering MHI controllers")
Reviewed-by: Manivannan Sadhasivam 
Signed-off-by: Clark Williams 
Signed-off-by: Sebastian Andrzej Siewior 
Signed-off-by: Manivannan Sadhasivam 
Link: https://lore.kernel.org/r/20200929175218.8178-13-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman

bus: mhi: core: Add const qualifier to MHI config information

2020-10-02T09:33:47+00:00

MHI channel, event and controller config data needs to be
treated read only information. Add const qualifier to make
sure config information passed by MHI controller is not
modified by MHI core driver.

Suggested-by: Kalle Valo 
Reviewed-by: Manivannan Sadhasivam 
Signed-off-by: Hemant Kumar 
Signed-off-by: Manivannan Sadhasivam 
Link: https://lore.kernel.org/r/20200929175218.8178-12-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman

bus: mhi: core: Introduce APIs to allocate and free the MHI controller

2020-10-02T09:33:47+00:00

Client devices should use the APIs provided to allocate and free
the MHI controller structure. This will help ensure that the
structure is zero-initialized and there are no false positives
with respect to reading any values such as the serial number or
the OEM PK hash.

Suggested-by: Manivannan Sadhasivam 
Reviewed-by: Manivannan Sadhasivam 
Signed-off-by: Bhaumik Bhatt 
Signed-off-by: Manivannan Sadhasivam 
Link: https://lore.kernel.org/r/20200929175218.8178-11-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman

bus: mhi: core: Read and save device hardware information from BHI

2020-10-02T09:33:47+00:00

Device hardware specific information such as serial number and the OEM
PK hash can be read using BHI and saved on host to identify the
endpoint.

Reviewed-by: Jeffrey Hugo 
Reviewed-by: Manivannan Sadhasivam 
Signed-off-by: Bhaumik Bhatt 
Signed-off-by: Manivannan Sadhasivam 
Link: https://lore.kernel.org/r/20200929175218.8178-10-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman

bus: mhi: core: Introduce counters to track MHI device state transitions

2020-10-02T09:33:47+00:00

Use counters to track MHI device state transitions such as those
to M0, M2, or M3 states. This can help in better debug, allowing
the user to see the number of transitions to a certain MHI state
when queried using debugfs entries or via other mechanisms.

Reviewed-by: Manivannan Sadhasivam 
Signed-off-by: Bhaumik Bhatt 
Signed-off-by: Manivannan Sadhasivam 
Link: https://lore.kernel.org/r/20200929175218.8178-9-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman

bus: mhi: core: Use generic name field for an MHI device

2020-10-02T09:33:46+00:00

An MHI device is not necessarily associated with only channels as we can
have one associated with the controller itself. Hence, the chan_name
field within the mhi_device structure should instead be replaced with a
generic name to accurately reflect any type of MHI device.

Reviewed-by: Jeffrey Hugo 
Reviewed-by: Manivannan Sadhasivam 
Signed-off-by: Bhaumik Bhatt 
Signed-off-by: Manivannan Sadhasivam 
Link: https://lore.kernel.org/r/20200929175218.8178-7-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman

bus: mhi: fix doubled words and struct image_info kernel-doc

2020-10-02T09:33:46+00:00

Drop doubled word "table" in kernel-doc.
Fix syntax for the kernel-doc notation for struct image_info.
Note that the bhi_vec field is private and not part of the kernel-doc.

Drop doubled word "device" in a comment.

Cc: Manivannan Sadhasivam 
Cc: Hemant Kumar 
Reviewed-by: Manivannan Sadhasivam 
[mani: Added bus: prefix to the commit subject]
Signed-off-by: Randy Dunlap 
Signed-off-by: Manivannan Sadhasivam 
Link: https://lore.kernel.org/r/20200929175218.8178-2-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman

bus: mhi: core: Remove the system error worker thread

2020-05-22T07:35:43+00:00

Remove the system error worker thread and instead have the
execution environment worker handle that transition to serialize
processing and avoid any possible race conditions during
shutdown.

Signed-off-by: Hemant Kumar 
Reviewed-by: Jeffrey Hugo 
Reviewed-by: Manivannan Sadhasivam 
Signed-off-by: Manivannan Sadhasivam 
Link: https://lore.kernel.org/r/20200521170249.21795-10-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman