pinctrl: Explicitly include correct DT includes

The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Acked-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230714174901.4062397-1-robh@kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

pinctrl: sunxi: fix a typo when merging A20 support to A10 driver

When merging A20 pinctrl support to A10 pinctrl driver, the I2C function
of PI3 is wrongly written as "i2c3" (it should be "i2c4").

Fix this typo.

Fixes: cad4e209c102 ("pinctrl: sunxi: add support of R40 to A10 pinctrl driver")
Reported-by: Mark Kettenis <mark.kettenis@xs4all.nl>
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

pinctrl: sunxi: Disable strict mode for old pinctrl drivers

Old pinctrl drivers will need to disable strict mode for various reasons,
among which:
- Some DT will still have a pinctrl group for each GPIO used, which will
be rejected by pin_request. While we could remove those nodes, we still
have to deal with old DTs.
- Some GPIOs on these boards need to have their pin configuration changed
(for bias or current), and there's no clear migration path

Let's disable the strict mode on those SoCs so that there's no breakage.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

pinctrl: sunxi: add support of R40 to A10 pinctrl driver

R40 is said to be an upgrade of A20, and its pin configuration is also
similar to A20 (and thus similar to A10).

Add support for R40 to the A10 pinctrl driver.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

pinctrl: sunxi: add a missing function of A10/A20 pinctrl driver

The PH16 pin has a function with mux id 0x5, which is the DET pin of the
"sim" (smart card reader) IP block.

This function is missing in old versions of A10/A20 SoCs' datasheets and
user manuals, so it's also missing in the old drivers. The newest A10
Datasheet V1.70 and A20 Datasheet V1.41 contain this pin function, and
it's discovered during implementing R40 pinctrl driver.

Add it to the driver. As we now merged A20 pinctrl driver to the A10
one, we need to only fix the A10 driver now.

Fixes: f2821b1ca3a2 ("pinctrl: sunxi: Move Allwinner A10 pinctrl
driver to a driver of its own")

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

pinctrl: sunxi: add A20 support to A10 driver

As A20 is designed as a pin-compatible upgrade of A10, their pin
controller are very similar, and can share one driver.

Add A20 support to the A10 driver.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

pinctrl: sunxi: make bool drivers explicitly non-modular

None of the Kconfigs for any of these drivers are tristate,
meaning that they currently are not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the drivers there is no doubt they are builtin-only. All
drivers get essentially the same change, so they are handled in batch.

Changes are (1) use builtin_platform_driver, (2) use init.h header
(3) delete module_exit related code, (4) delete MODULE_DEVICE_TABLE,
and (5) delete MODULE_LICENCE/MODULE_AUTHOR and associated tags.

Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We do delete the MODULE_LICENSE etc. tags since all that information
is already contained at the top of each file in the comments.

Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Hongzhou Yang <hongzhou.yang@mediatek.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Maxime Coquelin <maxime.coquelin@st.com>
Cc: Vishnu Patekar <vishnupatekar0510@gmail.com>
Cc: Mylene Josserand <mylene.josserand@free-electrons.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

pinctrl: sun4i: add spdif to pin description.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

pinctrl: constify of_device_id array

of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Acked-by: Hongzhou Yang <hongzhou.yang@mediatek.com>
Acked-by: Lee Jones <lee@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

pinctrl: sun4i: GPIOs configured as irq must be set to input before reading

On sun4i-a10, when GPIOs are configured as external interrupt the value for
them in the data register does not seem to get updated, so set their mux to
input (and restore afterwards) when reading the pin.

Missed edges seem to be buffered, so this does not introduce a race
condition.

I've also tested this on sun5i-a13 and sun7i-a20 and those do not seem to
be affected, the input value representation in the data register does seem
to correctly get updated to the actual pin value while in irq mode there.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

pinctrl: sunxi: drop owner assignment from platform_drivers

A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

pinctrl: sunxi: Declare the number of interrupt banks in the descriptor

Declare in the description structure associated to the compatible the number of
interrupt banks the device has. For now, we're not doing anything with it.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

pinctrl: sunxi: Move Allwinner A10 pinctrl driver to a driver of its own

Move the pin description to a driver specific to be. This is one more step
toward retiring pinctrl-sunxi-pins.h that used to define all the pins for all
the Allwinner SoCs in a single header, that would have in turn result in having
these structures in the final binary as many times as the header was included.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>