[GIT PULL] GPIO bulk changes for v5.7

From: Linus Walleij
Date: Sat Apr 04 2020 - 08:08:56 EST

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Hi Linus,

here is the GPIO pull request for the bulk of changes for v5.7.

There will be at least one conflict due to me fingering around and
renaming variables. It is pretty straight-forward to resolve: in the
gpiochip_irq_disable() what is in your branch came in as a late
fix and that is what should stay, with the variable "chip" renamed
to "gc". Sorry for messing with this so late in the cycle.

We have some patches to kfifo ACKed by the kfifo maintainer,
details about this can be found in the signed tag.

We have some two patches to arch/arm written by the maintainers
for these same platforms.

Please pull it in!

Yours,
Linus Walleij

The following changes since commit 16fbf79b0f83bc752cee8589279f1ebfe57b3b6e:

Linux 5.6-rc7 (2020-03-22 18:31:56 -0700)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git
tags/gpio-v5.7-1

for you to fetch changes up to 4ed7d7dd4890bb8120a3e77c16191a695fdfcc5a:

Revert "gpio: eic-sprd: Use devm_platform_ioremap_resource()"
(2020-04-02 09:39:09 +0200)

----------------------------------------------------------------
This is the bulk of GPIO development for the v5.7 kernel cycle.

Core and userspace API:

- The userspace API KFIFOs have been imoproved with locks that
do not block interrupts. This makes us better at getting
events to userspace without blocking or disturbing new events
arriving in the same time. This was reviewed by the KFIFO
maintainer Stefani. This is a generic improvement which
paves the road for similar improvements in other subsystems.

- We provide a new ioctl() for monitoring changes in the line
information, such as when multiple clients are taking lines
and giving them back, possibly reconfiguring them in the
process: we can now monitor that and not get stuck with stale
static information.

- An example tool 'gpio-watch' is provided to showcase this
functionality.

- Timestamps for events are switched to ktime_get_ns() which is
monotonic. We previously had a 'realtime' stamp which could
move forward and *backward* in time, which probably would just
cause silent bugs and weird behaviour. In the long run we
see two relevant timestamps: ktime_get_ns() or the timestamp
sometimes provided by the GPIO hardware itself, if that
exists.

- Device Tree overlay support for GPIO hogs. On systems that
load overlays, these overlays can now contain hogs, and will
then be respected.

- Handle pin control interaction with nonexisting pin ranges
in the GPIO library core instead of in the individual
drivers.

New drivers:

- New driver for the Mellanox BlueField 2 GPIO controller.

Driver improvements:

- Introduce the BGPIOF_NO_SET_ON_INPUT flag to the generic
MMIO GPIO library and use this flag in the MT7621 driver.

- Texas Instruments OMAP CPU power management improvements,
such as blocking of idle on pending GPIO interrupts.

----------------------------------------------------------------
Alexander Sverdlin (1):
gpio: pl061: Warn when IRQ line has not been configured

Andy Shevchenko (3):
gpio: Avoid kernel.h inclusion where it's possible
gpiolib: Optimize gpiochip_remove() when check for requested line
gpiolib: Rename 'event' to 'ge' to be consistent with other use

Anson Huang (2):
gpio: mxc: Add COMPILE_TEST support for GPIO_MXC
gpio: mxs: add COMPILE_TEST support for GPIO_MXS

Anssi Hannula (1):
tools: gpio: Fix out-of-tree build regression

Ashish Chavan (1):
gpio: rcar: Fix typo in comment

Asmaa Mnebhi (1):
gpio: add driver for Mellanox BlueField 2 GPIO controller

Axel Lin (2):
gpio: wcd934x: Don't change gpio direction in wcd_gpio_set
gpio: wcd934x: Fix logic of wcd_gpio_get

Baolin Wang (1):
Revert "gpio: eic-sprd: Use devm_platform_ioremap_resource()"

Bartosz Golaszewski (10):
kfifo: provide noirqsave variants of spinlocked in and out helpers
kfifo: provide kfifo_is_empty_spinlocked()
gpiolib: rework the locking mechanism for lineevent kfifo
gpiolib: emit a debug message when adding events to a full kfifo
gpiolib: provide a dedicated function for setting lineinfo
gpiolib: add new ioctl() for monitoring changes in line info
tools: gpio: implement gpio-watch
gpio: mockup: coding-style fix
gpiolib: use gpiochip_get_desc() where applicable
gpiolib: fix bitmap operations related to line event watching

Chris Packham (1):
gpio: mvebu: avoid error message for optional IRQ

Chuanhong Guo (2):
gpio: mmio: introduce BGPIOF_NO_SET_ON_INPUT
gpio: mt7621: add BGPIOF_NO_SET_ON_INPUT flag

Colin Ian King (1):
tools: gpio-hammer: fix spelling mistake: "occurences" -> "occurrences"

Doug Berger (1):
gpio: brcmstb: support gpio-line-names property

Gabriel Ravier (2):
tools: gpio-hammer: Avoid potential overflow in main
tools: gpio-hammer: Apply scripts/Lindent and retain good changes

Geert Uytterhoeven (7):
gpio: of: Extract of_gpiochip_add_hog()
gpio: of: Add DT overlay support for GPIO hogs
gpiolib: Fix inverted check in gpiochip_remove()
ARM: integrator: impd1: Use GPIO_LOOKUP() helper macro
gpiolib: Introduce gpiod_set_config()
gpiolib: Pass gpio_desc to gpio_set_config()
gpiolib: Remove unused gpio_chip parameter from gpio_set_bias()

Gustavo A. R. Silva (1):
gpio: uniphier: Replace zero-length array with flexible-array member

Jonathan NeuschÃfer (1):
gpio: uapi: Improve phrasing around arrays representing empty strings

Kent Gibson (1):
gpiolib: fix unwatch ioctl()

Linus Walleij (8):
Merge tag 'gpio-updates-for-v5.7-part1' of
git://git.kernel.org/.../brgl/linux into devel
gpio: Switch timestamps to ktime_get_ns()
Merge tag 'gpio-updates-for-v5.7-part2' of
git://git.kernel.org/.../brgl/linux into devel
Merge branch 'ib-omap-block-idle' into devel
gpio: Move devres calls to devres file
Merge tag 'gpio-updates-for-v5.7-part4' of
git://git.kernel.org/.../brgl/linux into devel
Merge tag 'v5.6-rc7' into devel
gpio: Rename variable in core APIs

Lubomir Rintel (1):
gpio: pxa: Avoid a warning when gpio0 and gpio1 IRQS are not there

Mauro Carvalho Chehab (2):
docs: gpio: driver.rst: don't mark literal blocks twice
gpio: gpiolib: fix a doc warning

MichaÅ MirosÅaw (1):
gpiolib: gpio_name_to_desc: factor out !name check

Mykyta Poturai (1):
tools: gpio: Fix typo in gpio-utils

Stephen Rothwell (1):
gpio: export of_pinctrl_get to modules

Thierry Reding (7):
gpio: Support GPIO controllers without pin-ranges
gpio: tegra186: Add support for pin ranges
gpio: tegra186: Add Tegra194 pin ranges for GG.0 and GG.1
gpio: Avoid using pin ranges with !PINCTRL
pinctrl: Define of_pinctrl_get() dummy for !PINCTRL
gpio: Unconditionally assign .request()/.free()
pinctrl: Unconditionally assign .request()/.free()

Tony Lindgren (3):
ARM: OMAP2+: Handle errors for cpu_pm
gpio: omap: Block idle on pending gpio interrupts
Revert "gpio: omap: Fix lost edge wake-up interrupts"

Uwe Kleine-KÃnig (1):
gpio: siox: use raw spinlock for irq related locking

Documentation/driver-api/gpio/driver.rst | 4 +-
arch/arm/mach-integrator/impd1.c | 11 +-
arch/arm/mach-omap2/cpuidle34xx.c | 9 +-
arch/arm/mach-omap2/cpuidle44xx.c | 26 +-
arch/arm/mach-omap2/pm34xx.c | 8 +-
drivers/gpio/Kconfig | 11 +-
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-brcmstb.c | 44 +
drivers/gpio/gpio-davinci.c | 7 +-
drivers/gpio/gpio-eic-sprd.c | 9 +-
drivers/gpio/gpio-mlxbf2.c | 335 ++++++++
drivers/gpio/gpio-mmio.c | 23 +-
drivers/gpio/gpio-mockup.c | 2 +-
drivers/gpio/gpio-mt7621.c | 4 +-
drivers/gpio/gpio-mvebu.c | 2 +-
drivers/gpio/gpio-mxc.c | 7 +-
drivers/gpio/gpio-omap.c | 29 +-
drivers/gpio/gpio-pl061.c | 13 +-
drivers/gpio/gpio-pxa.c | 11 +-
drivers/gpio/gpio-rcar.c | 4 +-
drivers/gpio/gpio-siox.c | 28 +-
drivers/gpio/gpio-tegra186.c | 64 ++
drivers/gpio/gpio-uniphier.c | 2 +-
drivers/gpio/gpio-wcd934x.c | 9 +-
drivers/gpio/gpio-zx.c | 10 +-
drivers/gpio/gpiolib-devres.c | 46 ++
drivers/gpio/gpiolib-of.c | 139 +++-
drivers/gpio/gpiolib-of.h | 2 +
drivers/gpio/gpiolib.c | 1297 +++++++++++++++++-------------
drivers/gpio/gpiolib.h | 4 +
drivers/pinctrl/devicetree.c | 1 +
drivers/pinctrl/pinctrl-ingenic.c | 7 +-
include/asm-generic/gpio.h | 4 +-
include/linux/gpio.h | 2 -
include/linux/gpio/consumer.h | 13 +-
include/linux/gpio/driver.h | 139 ++--
include/linux/kfifo.h | 73 ++
include/linux/of_gpio.h | 9 +-
include/linux/pinctrl/pinctrl.h | 2 +-
include/uapi/linux/gpio.h | 38 +-
tools/gpio/.gitignore | 1 +
tools/gpio/Build | 1 +
tools/gpio/Makefile | 13 +-
tools/gpio/gpio-hammer.c | 19 +-
tools/gpio/gpio-utils.c | 6 +-
tools/gpio/gpio-watch.c | 99 +++
46 files changed, 1814 insertions(+), 774 deletions(-)
create mode 100644 drivers/gpio/gpio-mlxbf2.c
create mode 100644 tools/gpio/gpio-watch.c

Next message: Zong Li: "Re: [PATCH v3 8/9] riscv: introduce interfaces to patch kernel code"
Previous message: Bo YU: "[PATCH -next] block/genhd: Align the label with the content of the /proc/partitions"
Next in thread: pr-tracker-bot: "Re: [GIT PULL] GPIO bulk changes for v5.7"
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