linux-toradex.git/drivers/pinctrl, branch v5.3-rc3

Merge tag 'pinctrl-v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

2019-07-13T22:02:27+00:00

Pull pin control updates from Linus Walleij:
"This is the bulk of pin control changes for the v5.3 kernel cycle:

Core changes:

- Device links can optionally be added between a pin control producer
and its consumers. This will affect how the system power management
is handled: a pin controller will not suspend before all of its
consumers have been suspended.

This was necessary for the ST Microelectronics STMFX expander and
need to be tested on other systems as well: it makes sense to make
this default in the long run.

Right now it is opt-in per driver.

- Drive strength can be specified in microamps. With decreases in
silicon technology, milliamps isn't granular enough, let's make it
possible to select drive strengths in microamps.

Right now the Meson (AMlogic) driver needs this.

New drivers:

- New subdriver for the Tegra 194 SoC.

- New subdriver for the Qualcomm SDM845.

- New subdriver for the Qualcomm SM8150.

- New subdriver for the Freescale i.MX8MN (Freescale is now a product
line of NXP).

- New subdriver for Marvell MV98DX1135.

Driver improvements:

- The Bitmain BM1880 driver now supports pin config in addition to
muxing.

- The Qualcomm drivers can now reserve some GPIOs as taken aside and
not usable for users. This is used in ACPI systems to take out some
GPIO lines used by the BIOS so that noone else (neither kernel nor
userspace) will play with them by mistake and crash the machine.

- A slew of refurbishing around the Aspeed drivers (board management
controllers for servers) in preparation for the new Aspeed AST2600
SoC.

- A slew of improvements over the SH PFC drivers as usual.

- Misc cleanups and fixes"

* tag 'pinctrl-v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (106 commits)
pinctrl: aspeed: Strip moved macros and structs from private header
pinctrl: aspeed: Fix missed include
pinctrl: baytrail: Use GENMASK() consistently
pinctrl: baytrail: Re-use data structures from pinctrl-intel.h
pinctrl: baytrail: Use defined macro instead of magic in byt_get_gpio_mux()
pinctrl: qcom: Add SM8150 pinctrl driver
dt-bindings: pinctrl: qcom: Add SM8150 pinctrl binding
dt-bindings: pinctrl: qcom: Document missing gpio nodes
pinctrl: aspeed: Add implementation-related documentation
pinctrl: aspeed: Split out pinmux from general pinctrl
pinctrl: aspeed: Clarify comment about strapping W1C
pinctrl: aspeed: Correct comment that is no longer true
MAINTAINERS: Add entry for ASPEED pinctrl drivers
dt-bindings: pinctrl: aspeed: Convert AST2500 bindings to json-schema
dt-bindings: pinctrl: aspeed: Convert AST2400 bindings to json-schema
dt-bindings: pinctrl: aspeed: Split bindings document in two
pinctrl: qcom: Add irq_enable callback for msm gpio
pinctrl: madera: Fixup SPDX headers
pinctrl: qcom: sdm845: Fix CONFIG preprocessor guard
pinctrl: tegra: Add bitmask support for parked bits
...

Merge tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2019-07-12T19:24:03+00:00

Pull driver core and debugfs updates from Greg KH:
 "Here is the "big" driver core and debugfs changes for 5.3-rc1

  It's a lot of different patches, all across the tree due to some api
  changes and lots of debugfs cleanups.

  Other than the debugfs cleanups, in this set of changes we have:

   - bus iteration function cleanups

   - scripts/get_abi.pl tool to display and parse Documentation/ABI
     entries in a simple way

   - cleanups to Documenatation/ABI/ entries to make them parse easier
     due to typos and other minor things

   - default_attrs use for some ktype users

   - driver model documentation file conversions to .rst

   - compressed firmware file loading

   - deferred probe fixes

  All of these have been in linux-next for a while, with a bunch of
  merge issues that Stephen has been patient with me for"

* tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (102 commits)
  debugfs: make error message a bit more verbose
  orangefs: fix build warning from debugfs cleanup patch
  ubifs: fix build warning after debugfs cleanup patch
  driver: core: Allow subsystems to continue deferring probe
  drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDT
  arch_topology: Remove error messages on out-of-memory conditions
  lib: notifier-error-inject: no need to check return value of debugfs_create functions
  swiotlb: no need to check return value of debugfs_create functions
  ceph: no need to check return value of debugfs_create functions
  sunrpc: no need to check return value of debugfs_create functions
  ubifs: no need to check return value of debugfs_create functions
  orangefs: no need to check return value of debugfs_create functions
  nfsd: no need to check return value of debugfs_create functions
  lib: 842: no need to check return value of debugfs_create functions
  debugfs: provide pr_fmt() macro
  debugfs: log errors when something goes wrong
  drivers: s390/cio: Fix compilation warning about const qualifiers
  drivers: Add generic helper to match by of_node
  driver_find_device: Unify the match function with class_find_device()
  bus_find_device: Unify the match callback with class_find_device
  ...

pinctrl: aspeed: Strip moved macros and structs from private header

2019-07-10T09:19:20+00:00

Further cleanup from the SPDX fixup fallout for the recent ASPEED
series. aspeed_g4_defconfig, aspeed_g5_defconfig and multi_v5_defconfig
now compile. Smoke tested the g4 and g5 kernels under QEMU's
palmetto-bmc and romulus-bmc machines respectively.

Fixes: 35d8510ea3ad ("pinctrl: aspeed: Fix missed include")
Signed-off-by: Andrew Jeffery 
Link: https://lore.kernel.org/r/20190710032216.4088-1-andrew@aj.id.au
Signed-off-by: Linus Walleij

pinctrl: aspeed: Fix missed include

2019-07-10T09:19:00+00:00

Some SPDX churn made my fixes drop an important include
from the Aspeed pinctrl header. Fix it up.

Cc: Andrew Jeffery 
Reported-by: Andrew Jeffery 
Signed-off-by: Linus Walleij

pinctrl: baytrail: Use GENMASK() consistently

2019-07-04T07:58:13+00:00

Use GENMASK() macro for all definitions where it's appropriate.
No functional change intended.

Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20190703151554.30454-1-andriy.shevchenko@linux.intel.com
Acked-by: Mika Westerberg 
Signed-off-by: Linus Walleij

pinctrl: baytrail: Re-use data structures from pinctrl-intel.h

2019-07-04T07:51:24+00:00

We have some data structures duplicated across the drivers.
Let's deduplicate them by using ones that being provided by
pinctrl-intel.h.

Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20190703003018.75186-2-andriy.shevchenko@linux.intel.com
Acked-by: Mika Westerberg 
Signed-off-by: Linus Walleij

pinctrl: baytrail: Use defined macro instead of magic in byt_get_gpio_mux()

2019-07-04T07:48:49+00:00

By the fact byt_get_gpio_mux() returns a value of mux settings as
it is represented in hardware. Use defined macro instead of magic numbers
to clarify this.

Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20190703003018.75186-1-andriy.shevchenko@linux.intel.com
Reviewed-By: Enrico Weigelt 
Acked-by: Mika Westerberg 
Signed-off-by: Linus Walleij

pinctrl: qcom: Add SM8150 pinctrl driver

2019-07-04T07:47:13+00:00

Add initial pinctrl driver to support pin configuration with
pinctrl framework for SM8150

Signed-off-by: Prasad Sodagudi 
Signed-off-by: Isaac J. Manjarres 
[vkoul: modify to use upstream tile support
	use upstream code style
	order the functions and squash functions]
Signed-off-by: Vinod Koul 
Link: https://lore.kernel.org/r/20190702105045.27646-4-vkoul@kernel.org
Reviewed-by: Bjorn Andersson 
Signed-off-by: Linus Walleij

driver: core: Allow subsystems to continue deferring probe

2019-07-03T19:28:20+00:00

Some subsystems, such as pinctrl, allow continuing to defer probe
indefinitely. This is useful for devices that depend on resources
provided by devices that are only probed after the init stage.

One example of this can be seen on Tegra, where the DPAUX hardware
contains pinmuxing controls for pins that it shares with an I2C
controller. The I2C controller is typically used for communication
with a monitor over HDMI (DDC). However, other instances of the I2C
controller are used to access system critical components, such as a
PMIC. The I2C controller driver will therefore usually be a builtin
driver, whereas the DPAUX driver is part of the display driver that
is loaded from a module to avoid bloating the kernel image with all
of the DRM/KMS subsystem.

In this particular case the pins used by this I2C/DDC controller
become accessible very late in the boot process. However, since the
controller is only used in conjunction with display, that's not an
issue.

Unfortunately the driver core currently outputs a warning message
when a device fails to get the pinctrl before the end of the init
stage. That can be confusing for the user because it may sound like
an unwanted error occurred, whereas it's really an expected and
harmless situation.

In order to eliminate this warning, this patch allows callers of the
driver_deferred_probe_check_state() helper to specify that they want
to continue deferring probe, regardless of whether we're past the
init stage or not. All of the callers of that function are updated
for the new signature, but only the pinctrl subsystem passes a true
value in the new persist parameter if appropriate.

Signed-off-by: Thierry Reding 
Reviewed-by: Rafael J. Wysocki 
Reviewed-by: Linus Walleij 
Link: https://lore.kernel.org/r/20190621151725.20414-1-thierry.reding@gmail.com
Signed-off-by: Greg Kroah-Hartman

pinctrl: aspeed: Add implementation-related documentation

2019-07-03T08:38:58+00:00

The ASPEED pinctrl driver implementations make heavy use of macros to
minimise tedium of implementation and maximise the chance that the
compiler will catch errors in defining signal and pin configurations.
While the goal of minimising errors is achieved, it is at the cost of
the complexity of the macros.

Document examples of the expanded form of pin declarations to
demonstrate the operation of the macros.

Cc: Johnny Huang 
Signed-off-by: Andrew Jeffery 
Link: https://lore.kernel.org/r/20190628023838.15426-9-andrew@aj.id.au
Signed-off-by: Linus Walleij