linux.git/drivers/pinctrl/stm32, branch v5.15

pinctrl: stm32: use valid pin identifier in stm32_pinctrl_resume()

2021-10-13T23:16:12+00:00

When resuming from low power, the driver attempts to restore the
configuration of some pins. This is done by a call to:
  stm32_pinctrl_restore_gpio_regs(struct stm32_pinctrl *pctl, u32 pin)
where 'pin' must be a valid pin value (i.e. matching some 'groups->pin').
Fix the current implementation which uses some wrong 'pin' value.

Fixes: e2f3cf18c3e2 ("pinctrl: stm32: add suspend/resume management")
Signed-off-by: Fabien Dessenne 
Link: https://lore.kernel.org/r/20211008122517.617633-1-fabien.dessenne@foss.st.com
Signed-off-by: Linus Walleij

pinctrl: stm32: Add STM32MP135 SoC support

2021-08-10T12:45:27+00:00

STM32MP135 SoC embeds 9 GPIO banks of 16 gpios each. Those GPIO
banks contain same features as STM32MP157 GPIO banks except that
each GPIO line of the STM32MP135 can be secured.

Signed-off-by: Alexandre Torgue 
Acked-by: Arnd Bergmann

Merge tag 'pinctrl-v5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

2021-07-01T23:57:14+00:00

Pull pin control updates from Linus Walleij:
"This is the bulk of pin control changes for the v5.14 kernel. Not so
much going on. No core changes, just drivers.

The most interesting would be that MIPS Ralink is migrating to pin
control and we have some bindings but not yet code for the Apple M1
pin controller.

New drivers:

- Last merge window we created a driver for the Ralink RT2880. We are
now moving the Ralink SoC pin control drivers out of the MIPS
architecture code and into the pin control subsystem. This concerns
RT288X, MT7620, RT305X, RT3883 and MT7621.

- Qualcomm SM6125 SoC pin control driver.

- Qualcomm spmi-gpio support for PM7325.

- Qualcomm spmi-mpp also handles PMI8994 (just a compatible string)

- Mediatek MT8365 SoC pin controller.

- New device HID for the AMD GPIO controller.

Improvements:

- Pin bias config support for a slew of Renesas pin controllers.

- Incremental improvements and non-urgent bug fixes to the Renesas
SoC drivers.

- Implement irq_set_wake on the AMD pin controller so we can wake up
from external pin events.

Misc:

- Devicetree bindings for the Apple M1 pin controller, we will
probably see a proper driver for this soon as well"

* tag 'pinctrl-v5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (54 commits)
pinctrl: ralink: rt305x: add missing include
pinctrl: stm32: check for IRQ MUX validity during alloc()
pinctrl: zynqmp: some code cleanups
drivers: qcom: pinctrl: Add pinctrl driver for sm6125
dt-bindings: pinctrl: qcom: sm6125: Document SM6125 pinctrl driver
dt-bindings: pinctrl: mcp23s08: add documentation for reset-gpios
pinctrl: mcp23s08: Add optional reset GPIO
pinctrl: mediatek: fix mode encoding
pinctrl: mcp23s08: Fix missing unlock on error in mcp23s08_irq()
pinctrl: bcm: Constify static pinmux_ops
pinctrl: bcm: Constify static pinctrl_ops
pinctrl: ralink: move RT288X SoC pinmux config into a new 'pinctrl-rt288x.c' file
pinctrl: ralink: move MT7620 SoC pinmux config into a new 'pinctrl-mt7620.c' file
pinctrl: ralink: move RT305X SoC pinmux config into a new 'pinctrl-rt305x.c' file
pinctrl: ralink: move RT3883 SoC pinmux config into a new 'pinctrl-rt3883.c' file
pinctrl: ralink: move MT7621 SoC pinmux config into a new 'pinctrl-mt7621.c' file
pinctrl: ralink: move ralink architecture pinmux header into the driver
pinctrl: single: config: enable the pin's input
pinctrl: mtk: Fix mt8365 Kconfig dependency
pinctrl: mcp23s08: fix race condition in irq handler
...

pinctrl: stm32: check for IRQ MUX validity during alloc()

2021-06-25T23:52:35+00:00

Considering the following irq_domain_ops call chain:
- .alloc() is called when a clients calls platform_get_irq() or
  gpiod_to_irq()
- .activate() is called next, when the clients calls
  request_threaded_irq()
Check for the IRQ MUX conflict during the first stage (alloc instead of
activate). This avoids to provide the client with an IRQ that can't be
used.

Signed-off-by: Fabien Dessenne 
Link: https://lore.kernel.org/r/20210617144602.2557619-1-fabien.dessenne@foss.st.com
Signed-off-by: Linus Walleij

pinctrl: stm32: fix the reported number of GPIO lines per bank

2021-06-18T12:56:54+00:00

Each GPIO bank supports a variable number of lines which is usually 16, but
is less in some cases : this is specified by the last argument of the
"gpio-ranges" bank node property.
Report to the framework, the actual number of lines, so the libgpiod
gpioinfo command lists the actually existing GPIO lines.

Fixes: 1dc9d289154b ("pinctrl: stm32: add possibility to use gpio-ranges to declare bank range")
Signed-off-by: Fabien Dessenne 
Link: https://lore.kernel.org/r/20210617144629.2557693-1-fabien.dessenne@foss.st.com
Signed-off-by: Linus Walleij

pinctrl: stm32: Print invalid AF warning inside stm32_pctrl_is_function_valid()

2021-04-08T07:52:20+00:00

The "invalid function %d on pin %d .\n" message is triplicated in the
driver in different variants, just pull it into the function and have
it once in the driver. The bonus is that all variants of the message
now print the pin number and AF consistently, so it is easier to debug
such pinmux problems.

Signed-off-by: Marek Vasut 
Cc: Fabien Dessenne 
Cc: Alexandre Torgue 
Cc: Linus Walleij 
Cc: linux-stm32@st-md-mailman.stormreply.com
To: linux-arm-kernel@lists.infradead.org
Acked-by: Fabien Dessenne 
Link: https://lore.kernel.org/r/20210406180035.279249-1-marex@denx.de
Signed-off-by: Linus Walleij

pinctrl: stm32: add missing of_node_put

2021-03-10T13:41:12+00:00

Fix OF node leaks by calling of_node_put in
for_each_available_child_of_node when the cycle returns.

Generated by: scripts/coccinelle/iterators/for_each_child.cocci

Signed-off-by: Junlin Yang 
Link: https://lore.kernel.org/r/20210215103643.898-1-angkery@163.com
Acked-by: Fabien Dessenne 
Signed-off-by: Linus Walleij

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