For some Allwinner SoCs we have one pinctrl driver caring for multiple
very similar chips, and are tagging certain pins with a variant bitmask.
The Allwinner D1 introduced a slightly extended register layout, and we
were abusing this variant mask to convey this bit of information into
the common code part.
Now there will be more pinctrl device properties to consider (has PortF
voltage switch, for instance), so shoehorning this into the variant
bitmask will not fly anymore.
Refactor the "variant" field into a more generic "flags" field. It turns
out that we don't need the variant bits to be unique across all SoCs,
but only among those SoCs that share one driver (table), of which there
are at most three variants at the moment. So the actual variant field can
be limited to say 8 bits, and the other bits in the flag register can be
re-purposed to hold other information, like this extended register
layout.
As a side effect we can move the variant definition into the per-SoC
pinctrl driver file, which makes it more obvious that this is just a
private definition, only relevant for this particular table.
This also changes the artificial sun20i-d1 "variant" into the actual
flag bit that we are after.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/20250306235827.4895-2-andre.przywara@arm.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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>
The D1 pin controller contains muxes for two CAN buses. While the CAN
bus controllers are only documented for the T113 SoC, the pin controller
is the same across all SoC variants.
Signed-off-by: Fabien Poussin <fabien.poussin@gmail.com>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Link: https://lore.kernel.org/r/20221126191636.6673-1-samuel@sholland.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This SoC contains a pinctrl with a new register layout. Use the variant
parameter to set the right register offsets. This pinctrl also increases
the number of functions per pin from 8 to 16, taking advantage of all 4
bits in the mux config field (so far, only functions 0-8 and 14-15 are
used). This increases the maximum possible number of functions.
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20220713025233.27248-7-samuel@sholland.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
