linux.git/drivers/pinctrl/stm32, branch v5.12

pinctrl: stm32: use the hwspin_lock_timeout_in_atomic() API

2020-07-23T13:19:28+00:00

Use the hwspin_lock_timeout_in_atomic() API which is the most appropriated
here. Indeed:
- hwspin_lock_() is called after spin_lock_irqsave()
- the hwspin_lock_timeout() API relies on jiffies count which won't work
  if IRQs are disabled which is the case here.

Signed-off-by: Fabien Dessenne 
Signed-off-by: Alexandre Torgue 
Link: https://lore.kernel.org/r/20200615124456.27328-1-alexandre.torgue@st.com
Signed-off-by: Linus Walleij

pinctrl: stm32: add possibility to configure pins individually

2020-06-20T21:08:00+00:00

Adds the possibility to configure a single pin through the gpiolib (i.e:
to set PULL_UP/PULL_DOWN config).
Mutex behavior is slightly changed to avoid a deadlock when pin_config_set
is called (in this case pctldev->mutex is already taken).

Signed-off-by: Alexandre Torgue 
Link: https://lore.kernel.org/r/20200615125951.28008-3-alexandre.torgue@st.com
Signed-off-by: Linus Walleij

pinctrl: stm32: return proper error code in pin_config_set

2020-06-20T21:08:00+00:00

".pin_config_set" or ".pin_config_group_set" can be called with a
configuration not supported (i.e. PIN_CONFIG_PERSIST_STATE). In this case,
it is more suitable to return -ENOTSUPP instead of -EINVAL.

Signed-off-by: Alexandre Torgue 
Link: https://lore.kernel.org/r/20200615125951.28008-2-alexandre.torgue@st.com
Signed-off-by: Linus Walleij

pinctrl: stm32: defer probe if reset resource is not yet ready

2020-06-20T21:05:18+00:00

Defer probe when pin controller reset is defined in the system resources
but not yet probed.

Signed-off-by: Etienne Carriere 
Signed-off-by: Alexandre Torgue 
Link: https://lore.kernel.org/r/20200615125407.27632-3-alexandre.torgue@st.com
Signed-off-by: Linus Walleij

pinctrl: stm32: don't print an error on probe deferral during clock get

2020-06-20T21:05:18+00:00

Change STM32 pinctrl driver to not print an error trace when probe is
deferred due to clock resource. Probe defer issue (for clocks) could
occur during bank registering when some banks have already been registered.
In this case banks already registered should be released. To not waste time
in this case, it is better to check first if all clocks are available
before registering banks.

Signed-off-by: Etienne Carriere 
Signed-off-by: Alexandre Torgue 
Link: https://lore.kernel.org/r/20200615125407.27632-2-alexandre.torgue@st.com
Signed-off-by: Linus Walleij

Merge tag 'pinctrl-v5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

2020-04-02T22:47:18+00:00

Pull pin control updates from Linus Walleij:
"This is the bulk of pin control changes for the v5.7 kernel cycle.

There are no core changes this time, only driver developments:

- New driver for the Dialog Semiconductor DA9062 Power Management
Integrated Circuit (PMIC).

- Renesas SH-PFC has improved consistency, with group and register
checks in the configuration checker.

- New subdriver for the Qualcomm IPQ6018.

- Add the RGMII pin control functionality to Qualcomm IPQ8064.

- Performance and code quality cleanups in the Mediatek driver.

- Improve the Broadcom BCM2835 support to cover all the GPIOs that
exist in it.

- The Allwinner/Sunxi driver properly masks non-wakeup IRQs on
suspend.

- Add some missing groups and functions to the Ingenic driver.

- Convert some of the Freescale device tree bindings to use the new
and all improved JSON YAML markup.

- Refactorings and support for the SFIO/GPIO in the Tegra194 SoC
driver.

- Support high impedance mode in the Spreadtrum/Unisoc driver"

* tag 'pinctrl-v5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (64 commits)
pinctrl: qcom: fix compilation error
pinctrl: qcom: use scm_call to route GPIO irq to Apps
pinctrl: sprd: Add pin high impedance mode support
pinctrl: sprd: Use the correct pin output configuration
pinctrl: tegra: Add SFIO/GPIO programming on Tegra194
pinctrl: tegra: Renumber the GG.0 and GG.1 pins
pinctrl: tegra: Do not add default pin range on Tegra194
pinctrl: tegra: Pass struct tegra_pmx for pin range check
pinctrl: tegra: Fix "Scmitt" -> "Schmitt" typo
pinctrl: tegra: Fix whitespace issues for improved readability
pinctrl: mediatek: Use scnprintf() for avoiding potential buffer overflow
pinctrl: freescale: drop the dependency on ARM64 for i.MX8M
Revert "pinctrl: mvebu: armada-37xx: use use platform api"
dt-bindings: pinctrl: at91: Fix a typo ("descibe")
pinctrl: meson: add tsin pinctrl for meson gxbb/gxl/gxm
pinctrl: sprd: Fix the kconfig warning
pinctrl: ingenic: add hdmi-ddc pin control group
pinctrl: sirf/atlas7: Replace zero-length array with flexible-array member
pinctrl: sprd: Allow the SPRD pinctrl driver building into a module
pinctrl: Export some needed symbols at module load time
...

irqchip/stm32: Retrigger both in eoi and unmask callbacks

2020-03-24T11:12:34+00:00

Sampling the IRQ line state in EOI and retriggering the interrupt to
work around missing level-triggered interrupt support only works for
non-threaded interrupts. Threaded interrupts must be retriggered the
same way in unmask callback.

Signed-off-by: Marek Vasut 
[maz: fixed missing static attribute]
Signed-off-by: Marc Zyngier 
Link: https://lore.kernel.org/r/20200323235132.530550-1-marex@denx.de

pinctrl: stm32: Add level interrupt support to gpio irq chip

2020-03-08T14:25:45+00:00

GPIO hardware block is directly linked to EXTI block but EXTI handles
external interrupts only on edge. To be able to handle GPIO interrupt on
level a "hack" is done in gpio irq chip: parent interrupt (exti irq chip)
is retriggered following interrupt type and gpio line value.

Signed-off-by: Alexandre Torgue 
Signed-off-by: Marc Zyngier 
Tested-by: Marek Vasut 
Reviewed-by: Linus Walleij 
Link: https://lore.kernel.org/r/20200219143229.18084-3-alexandre.torgue@st.com

pinctrl: Use new GPIO_LINE_DIRECTION

2020-02-21T14:19:42+00:00

Use newly added GPIO defines GPIO_LINE_DIRECTION_IN and
GPIO_LINE_DIRECTION_OUT instead of using hard-coded 1 and 0.

Main benefit is to make it easier to see which values mean IN and which
OUT. As a side effect this helps GPIO framework to change the direction
defines to something else if ever needed.

Please note that return value from get_direction call on
pinctrl-axp209 driver was changed. Previously pinctrl-axp209 might have
returned value 2 for direction INPUT.

Signed-off-by: Matti Vaittinen 
Reported-by: kbuild test robot 
Reviewed-by: Geert Uytterhoeven 
Acked-by: Geert Uytterhoeven 
Reviewed-by: Bjorn Andersson 
Reviewed-by: Jacopo Mondi 
Link: https://lore.kernel.org/r/20200214135712.GA14557@localhost.localdomain
Signed-off-by: Linus Walleij

pinctrl: stm32: Use the correct style for SPDX License Identifier

2019-12-12T10:33:51+00:00

This patch corrects the SPDX License Identifier style in
header file related to STMicroelectronics pinctrl driver.
For C header files Documentation/process/license-rules.rst
mandates C-like comments (opposed to C source files where
C++ style should be used).

Changes made by using a script provided by Joe Perches here:
https://lkml.org/lkml/2019/2/7/46.

Suggested-by: Joe Perches 
Signed-off-by: Nishad Kamdar 
Link: https://lore.kernel.org/r/14bb695da50f7af8499e7dfc32c2ab753d92a3e9.1574871463.git.nishadkamdar@gmail.com
Signed-off-by: Linus Walleij