About Intel Thunder Bay:
-----------------------
Intel Thunder Bay is a computer vision AI accelerator SoC based on ARM CPU.

Pinctrl IP:
----------
The SoC has a customised pinmux controller IP which controls pin
multiplexing and configuration.

Thunder Bay pinctrl IP is not based on and have nothing in common with the
existing pinctrl drivers. The registers used are incompatible with the
existing drivers, so it requires a new driver.

Add pinctrl driver to enable pin control support in the Intel Thunder Bay
SoC.
Co-developed-by: Kiran Kumar S <kiran.kumar1.s@intel.com>
Signed-off-by: Kiran Kumar S <kiran.kumar1.s@intel.com>
Signed-off-by: Lakshmi Sowjanya D <lakshmi.sowjanya.d@intel.com>
Link: https://lore.kernel.org/r/20211201072626.19599-3-lakshmi.sowjanya.d@intel.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add Device Tree bindings documentation and an entry in MAINTAINERS file
for Intel Thunder Bay SoC's pin controller.
Signed-off-by: Lakshmi Sowjanya D <lakshmi.sowjanya.d@intel.com>
Link: https://lore.kernel.org/r/20211201072626.19599-2-lakshmi.sowjanya.d@intel.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This adds pincontrol driver for tlmm block found in SM8450 SoC

This patch is based on initial code downstream by
Elliot Berman <eberman@codeaurora.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211201072434.3968768-3-vkoul@kernel.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add device tree binding Documentation details for Qualcomm SM8450
TLMM device
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211201072434.3968768-2-vkoul@kernel.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Merge tag 'renesas-pinctrl-for-v5.17-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into devel

pinctrl: renesas: Updates for v5.17

  - Add generic support for output impedance,
  - Add drive strength and output impedance support for the RZ/G2L SoC,
  - Miscellaneous fixes and improvements.

Also fix some examples to avoid warnings like:
brcm,ns-pinmux.example.dt.yaml: pin-controller@1800c1c0: $nodename:0: 'pin-controller@1800c1c0' does not match '^pinctrl|pinmux@[0-9a-f]+$'
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211202063216.24439-1-zajec5@gmail.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Resources need to be shared between pinmux and plgpio.

Introduce regmap phandle in order to retrieve the regmap
from the phandle if the property is present.
This allows to retrieve an external regmap (ie the one
used by pinmux if the phandle references the pinmux node)
from plgpio.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20211202095255.165797-4-herve.codina@bootlin.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Resources need to be shared between pinmux and plgpio.

Use regmap (syscon) to access resources to allow an
easy way to share resources.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20211202095255.165797-3-herve.codina@bootlin.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Resources need to be shared between pinmux and plgpio.

Use regmap (syscon) to access resources to allow an
easy way to share resources.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20211202095255.165797-2-herve.codina@bootlin.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This helps validating DTS and writing YAML files.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211110165720.30242-1-zajec5@gmail.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Zero-length and one-element arrays are deprecated, see
Documentation/process/deprecated.rst
Flexible-array members should be used instead.

Generated by: scripts/coccinelle/misc/flexible_array.cocci

CC: Joey Gouly <joey.gouly@arm.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
Link: https://lore.kernel.org/r/alpine.DEB.2.22.394.2111271859250.2864@hadrienSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

All the other mtk_hw_get_value() calls have a check for "if (err)" so
we can add one here as well.  This silences a Smatch warning:

    drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c:819 mtk_pinconf_bias_get_rsel()
    error: uninitialized symbol 'pd'.

Fixes: fb34a9ae ("pinctrl: mediatek: support rsel feature")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20211127140836.GB24002@kiliSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

The "try_all_type" variable is not set if (hw->soc->pull_type) is false
leading to the following Smatch warning:

    drivers/pinctrl/mediatek/pinctrl-paris.c:599 mtk_pctrl_show_one_pin()
    error: uninitialized symbol 'try_all_type'.

Fixes: fb34a9ae ("pinctrl: mediatek: support rsel feature")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20211127140750.GA24002@kiliSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add the pinctrl driver support for i.MXRT1050.
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20211125211443.1150135-5-Mr.Bossman075@gmail.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add i.MXRT1050 pinctrl binding doc

Cc: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211125211443.1150135-3-Mr.Bossman075@gmail.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

GPIO nodes are not themselves busses, so passing rockchip_bank_match
here is wrong.  Passing NULL instead uses the standard bus match table
which is more appropriate.

devm_of_platform_populate() shows that this is the normal way to call
of_platform_populate() from a device driver, so in order to match that
more closely also add the pinctrl device as the parent for the newly
created GPIO controllers.

Specifically, using the wrong match here can break dynamic GPIO hogs as
marking the GPIO bank as a bus means that of_platform_notify() will set
OF_POPULATED on new child nodes and if this happens before
of_gpio_notify() is called then the new hog will be skipped as
OF_POPULATED is already set.

Fixes: 9ce9a020 ("pinctrl/rockchip: drop the gpio related codes")
Signed-off-by: John Keeping <john@metanate.com>
Link: https://lore.kernel.org/r/20211126151352.1509583-1-john@metanate.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This reverts commit 3fe59cc4.
The bindings were not properly reviewed and were also
causing errors in the automatic checkers once applied.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

If of_property_count_u32_elems returned 0, return -EINVAL to indicate
a failure. Previously this would return 0.

Fixes: a0f160ff ("pinctrl: add pinctrl/GPIO driver for Apple SoCs")
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-12-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This expresses the intention clearer.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-11-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

The gpio core code sets of_node, so no need to do it here.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-10-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Having this missing, but everything else valid shouldn't result
in a failure.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-9-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-8-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Try to make this more readable by not using a long line with
a ternary operator.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-7-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Explicitly return 0 if the regmap_read fails.
Also change a uint32_t to a u32.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-6-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This is needed for the BIT(n) macro.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-5-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This is the preferred comment style.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-4-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add a missing comma at the end of the regmap initialisation.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-3-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Reflow some of the code now that the extra '_gpio' was removed.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-2-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Linux 5.16-rc2 is needed because nonurgent fixes headed
for next are strongly textually dependent on a fix that
was applied for rc2.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Suggested-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@gmail.com>
Signed-off-by: Dominik Kobinski <dominikkobinski314@gmail.com>
Link: https://lore.kernel.org/r/20211125215626.62447-1-dominikkobinski314@gmail.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Adopt regmap instead of a direct memory map so that custom regmaps and
other interfaces can be supported.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Link: https://lore.kernel.org/r/20211119195928.2498441-5-colin.foster@in-advantage.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

In order to allow external control via SPI, memory-mapped areas must be
changed to use the generic regmap interface. This is step 1, and is
followed by an implementation that allows a custom regmap.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Link: https://lore.kernel.org/r/20211119195928.2498441-4-colin.foster@in-advantage.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

struct gpio_chip recommends passing -1 as base to gpiolib. Doing so avoids
conflicts when the chip is external and gpiochip0 already exists.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Tested-by: Clément Léger <clement.leger@bootlin.com>
Link: https://lore.kernel.org/r/20211119195928.2498441-3-colin.foster@in-advantage.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Simple cleanup to make two function calls only one.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Link: https://lore.kernel.org/r/20211119195928.2498441-2-colin.foster@in-advantage.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

In arch/arm/boot/dts/uniphier-pinctrl.dtsi, there are child nodes of
pinctrl that defines pinmux and pincfg, however, there are no rules about
that in dt-bindings.

'make dtbs_check' results an error with the following message:

   pinctrl: 'ain1', 'ain2', 'ainiec1', 'aout', 'aout1', 'aout2', ...
   ... 'usb2', 'usb3' do not match any of the regexes: 'pinctrl-[0-9]+'

To avoid the issue, add the rules of pinmux and pincfg in each child node
and grandchild node.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1636416699-21033-1-git-send-email-hayashi.kunihiko@socionext.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add compatible strings for pm2250 SPMI GPIO to documentation.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Link: https://lore.kernel.org/r/1637076915-3280-2-git-send-email-loic.poulain@linaro.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

PM2250, commonly combined with QCM2290, provides ten SPMI GPIOs.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Link: https://lore.kernel.org/r/1637076915-3280-1-git-send-email-loic.poulain@linaro.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

sc7280 supports the egpio feature, GPIOs ranging from 144 to 174
(31 GPIOs) support it, we define gpio_func to 9, which
is an unused function for all these pins on sc7280.
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1637041084-3299-2-git-send-email-rnayak@codeaurora.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

egpio is a scheme which allows special power Island Domain IOs
(LPASS,SSC) to be reused as regular chip GPIOs by muxing regular
TLMM functions with Island Domain functions.
With this scheme, an IO can be controlled both by the cpu running
linux and the Island processor. This provides great flexibility to
re-purpose the Island IOs for regular TLMM usecases.

2 new bits are added to ctl_reg, egpio_present is a read only bit
which shows if egpio feature is available or not on a given gpio.
egpio_enable is the read/write bit and only effective if egpio_present
is 1. Once its set, the Island IO is controlled from Chip TLMM.
egpio_enable when set to 0 means the GPIO is used as Island Domain IO.

To support this we add a new function 'egpio' which can be used to
set the egpio_enable to 0, for any other TLMM controlled functions
we set the egpio_enable to 1.
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Link: https://lore.kernel.org/r/1637041084-3299-1-git-send-email-rnayak@codeaurora.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

PM8019 provides 6 GPIOs. Add a compatible to support that.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211112115342.17100-2-konrad.dybcio@somainline.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>