This driver is based on the one for NPCM7xx, because the WPCM450 is a
predecessor of those SoCs. Notable differences:

- On WPCM450, the GPIO registers are not organized in multiple banks,
  but rather placed continually into the same register block. This
  affects how register offsets are computed.
- Pinmux nodes can explicitly select GPIO mode, whereas in the npcm7xx
  driver, this happens automatically when a GPIO is requested.

Some functionality implemented in the hardware was (for now) left unused
in the driver, specifically blinking and pull-up/down.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20220129115228.2257310-6-j.neuschaefer@gmx.netSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This binding is heavily based on the one for NPCM7xx, because the
hardware is similar. There are some notable differences, however:

- The addresses of GPIO banks are not physical addresses but simple
  indices (0 to 7), because the GPIO registers are not laid out in
  convenient blocks.
- Pinmux settings can explicitly specify that the GPIO mode is used.

Certain pins support blink patterns in hardware. This is currently not
modelled in the DT binding.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220129115228.2257310-5-j.neuschaefer@gmx.netSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This driver can have up to two regmaps. If the second one is registered
its debugfs entry will have the same name as the first one and the
following error will be printed:

[    2.242568] debugfs: Directory 'e2004064.pinctrl' with parent 'regmap' already present!

Give the second regmap a name to avoid this.

Fixes: 076d9e71 ("pinctrl: ocelot: convert pinctrl to regmap")
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Colin Foster <colin.foster@in-advantage.com>
Link: https://lore.kernel.org/r/20220216122727.1005041-1-michael@walle.ccSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Prior to commit ad96111e ("pinctrl: ocelot: combine get resource and
ioremap into single call") the resource index was 1, now it is 0. But 0
is the base region for the pinctrl block. Fix it.
I noticed this because there was an error that the memory region was
ioremapped twice.

Fixes: ad96111e ("pinctrl: ocelot: combine get resource and ioremap into single call")
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Colin Foster <colin.foster@in-advantage.com>
Link: https://lore.kernel.org/r/20220216082020.981797-1-michael@walle.ccSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add i.MX93 pinctrl driver
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/20220228010103.2725893-2-peng.fan@oss.nxp.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add pinctrl binding doc for i.MX93
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220228010103.2725893-1-peng.fan@oss.nxp.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Change "mediatek,rsel_resistance_in_si_unit" to "mediatek,rsel-resistance-in-si-unit"

Fixes: fb34a9ae ("pinctrl: mediatek: support rsel feature")
Signed-off-by: Guodong Liu <guodong.liu@mediatek.com>
Link: https://lore.kernel.org/r/20220216032124.28067-4-guodong.liu@mediatek.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This commit includes pinctrl driver for mt8186.
Signed-off-by: Guodong Liu <guodong.liu@mediatek.com>
Link: https://lore.kernel.org/r/20220216032124.28067-3-guodong.liu@mediatek.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

1. This patch adds pinctrl file for mt8186.
2. This patch adds mt8186 compatible node in binding document.
Signed-off-by: Guodong Liu <guodong.liu@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220216032124.28067-2-guodong.liu@mediatek.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Merge tag 'intel-pinctrl-v5.18-1' of gitolite.kernel.org:pub/scm/linux/kernel/git/pinctrl/intel into devel

intel-pinctrl for v5.18-1

* Introduce support for Alder Lake-N (required to revert misplaced ID)
* Add support for Raptor Lake-S
* Add support for Ice Lake-N (MacBookPro16,2)
* Miscellaneous fixes

The following is an automated git shortlog grouped by driver:

alderlake:
 -  Add Intel Alder Lake-N pin controller support
 -  Add Raptor Lake-S ACPI ID

baytrail:
 -  Clear direct_irq_en flag on broken configs

icelake:
 -  Add Ice Lake-N PCH pin controller support

intel:
 -  Fix a glitch when updating IRQ flags on a preconfigured line
 -  fix unexpected interrupt

Place correctly CONFIG_PINCTRL_ST in the Makefile:
 - Place correctly CONFIG_PINCTRL_ST in the Makefile

tigerlake:
 -  Revert "Add Alder Lake-M ACPI ID"

Merge tag 'renesas-pinctrl-for-v5.18-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into devel

pinctrl: renesas: Updates for v5.18 (take two)

  - Share more pin group data, to reduce kernel size and ease review,
  - Improve the pin control table validator,
  - Add support for the new R-Car S4-8 SoC,
  - Miscellaneous fixes and improvements.

Add pins, groups, and functions for the Ethernet Time-Sensitive
Networking (TSN) interfaces on the Renesas R-Car S4-8 (R8A779F0) SoC.

Based on a larger patch in the BSP by LUU HOAI.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/e0a1dc7d2435d28811e3acb361dae050eb3aabc9.1645457792.git.geert+renesas@glider.be

Add pins, groups, and functions for the Quad SPI Controllers on the
Renesas R-Car S4-8 (R8A779F0) SoC.

Based on a larger patch in the BSP by LUU HOAI.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/cd7f7feeabebf268adc9e050e348230e93b40829.1645457792.git.geert+renesas@glider.be

Add pins, groups, and function for the PCIe Controllers on the Renesas
R-Car S4-8 (R8A779F0) SoC.

Extracted from a larger patch in the BSP by LUU HOAI.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/b2f95db490d13e8cb7d97a63d58d47933317e28a.1645457792.git.geert+renesas@glider.be

Add pins, groups, and function for the Clock-Synchronized Serial
Interfaces with FIFO (MSIOF) on the Renesas R-Car S4-8 (R8A779F0) SoC.

Based on a larger patch in the BSP by LUU HOAI.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/c625769714b1027a756dd2ed4a017eb24708a041.1645457792.git.geert+renesas@glider.be

Add pins, groups, and function for the MMC interface on the Renesas
R-Car S4-8 (R8A779F0) SoC.

Based on a larger patch in the BSP by LUU HOAI.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/81a35c1fac4616d25501942848eb9662d477f9ef.1645457792.git.geert+renesas@glider.be

Add pins, groups, and function for the Interrupt Controller for External
Devices (INTC-EX) on the Renesas R-Car S4-8 (R8A779F0) SoC.

Based on a larger patch in the BSP by LUU HOAI.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/dc6e25da42ac4bd19ca31b5b32b43a10a0e1aa7e.1645457792.git.geert+renesas@glider.be

Add pins, groups, and functions for the High Speed Serial Communication
Interfaces with FIFO (HSCIF) on the Renesas R-Car S4-8 (R8A779F0) SoC.

Based on a larger patch in the BSP by LUU HOAI.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/2b85b8857c1189fa6ee33e2f57fe746d740481d1.1645457792.git.geert+renesas@glider.be

Add pins, groups, and functions for the I2C Bus Interfaces (I2C) on the
Renesas R-Car S4-8 (R8A779F0) SoC.

Extracted from a larger patch in the BSP by LUU HOAI.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/217f5b3e3888b5899c375d3cb1ec8780f6a9e19b.1645457792.git.geert+renesas@glider.be

Add pins, groups, and functions for the Serial Communication Interfaces
with FIFO (SCIF) on the Renesas R-Car S4-8 (R8A779F0) SoC.

Extracted from a larger patch in the BSP by LUU HOAI.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/6369359a53483291ee536787c8a232462ff1b3a9.1645457792.git.geert+renesas@glider.be

Add initial Pin Function Controller (PFC) support for the Renesas R-Car
S4-8 (R8A779F0) SoC, including bias, drive strength and voltage control.

Based on a larger patch in the BSP by LUU HOAI.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/fd8201da404b7b0897130b254380ffc97f437266.1645457792.git.geert+renesas@glider.be

Add PORT_GP_CFG_19() and PORT_GP_19() helper macros, to be used by the
r8a779f0 subdriver.

Based on a larger patch in the BSP by LUU HOAI.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/f7fc711d065f78911bac1b616880ba3dbc858158.1645457792.git.geert+renesas@glider.be

Document Pin Function Controller (PFC) support for the Renesas R-Car
S4-8 (R8A779F0) SoC.
Signed-off-by: LUU HOAI <hoai.luu.ub@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/d51828853396773be2d6837f3301ac9da8b6f29e.1645457792.git.geert+renesas@glider.be

Linus reports that some Renesas pin control sub-drivers are still
including <linux/gpio.h> instead of <linux/gpio/driver.h>.  As these
sub-drivers don't need either, the includes can just be removed.
Reported-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/578825d779b45af745cc7623c7f69d2ddeadac4b.1645605227.git.geert+renesas@glider.be

The checker failed to validate all enum IDs in the description of a
register with fixed-width register fields, due to a miscalculation of
the number of described states: each register field of n bits can have
"1 << n" possible states, not "1".

Increase SH_PFC_MAX_ENUMS accordingly, now more enum IDs are checked
(SH-Mobile AG5 has more than 4000 enum IDs defined).

Fixes: 12d057ba ("pinctrl: sh-pfc: checker: Add check for enum ID conflicts")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/6d8a6a05564f38f9d20464c1c17f96e52740cf6a.1645460429.git.geert+renesas@glider.be

This adds pinctrl/GPIO support for Intel Ice Lake-N PCH. The Ice Lake-N
PCH GPIO is based on the same version of the Intel GPIO hardware than
Intel Cannon Lake with different set of pins and ACPI ID.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>

This change driver adds pinctrl/GPIO support for Intel Alder Lake-N SoC. The
GPIO controller is based on the next generation GPIO hardware but still
compatible with the one supported by the Intel core pinctrl/GPIO driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>

Intel Raptor Lake-S PCH has the same GPIO hardware than Alder Lake-S PCH
but the ACPI ID is different. Add this new ACPI ID to the list of supported
devices.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>

It appears that last minute change moved ACPI ID of Alder Lake-M
to the INTC1055, which is already in the driver.

This ID on the other hand will be used elsewhere.

This reverts commit 258435a1.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>

Check that there is only a single entry for each pin with drive strength
capabilities.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/382206e737710afd3059abe75bc41e324823e657.1640270559.git.geert+renesas@glider.be

Check that there is only a single entry for each pin with pull-up and/or
pull-down capabilities.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/dbda76f342258f8029f0420fbe3f341a9abd6f01.1640270559.git.geert+renesas@glider.be

Validate consistency of the pin control tables for pins with I/O voltage
capabilities.  If a pin has I/O voltage register bits declarations
through .pin_to_pocctrl(), the SH_PFC_PIN_CFG_IO_VOLTAGE flag should be
set in the pin's configs, and vice versa.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/de81cced01ae3f26d341177d66d4b8e918fbfb76.1640270559.git.geert+renesas@glider.be

Validate consistency of the pin control tables for pins with drive
strength capabilities.  If a pin has drive strength register bits
declarations in drive_regs[], the SH_PFC_PIN_CFG_DRIVE_STRENGTH flag
should be set in the pin's configs, and vice versa.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/0d5de01b5fe2c5fd23c3bea41077dc57ad105b9e.1640270559.git.geert+renesas@glider.be

Validate consistency of the pin control tables for pins with pull-up
and/or pull-down capabilities.  If a pin has bias register bits
declarations in bias_regs[] or through .pin_to_portcr(), the
corresponding SH_PFC_PIN_CFG_PULL* flags should be set in the pin's
configs, and vice versa, and the .get_bias() and .set_bias() callbacks
should be implemented.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/19b3e0773fbb36c015a43db683f79e75b0fec3ee.1640270559.git.geert+renesas@glider.be

Add checks for discovering pin groups that could share pin data, as
sharing reduces kernel size.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/e16fdf729156e13b591d2f082f2cc934da580074.1640270559.git.geert+renesas@glider.be

Simplify the helper that checks if two strings are valid and identical.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/509c70041bcf4302e284758abe1fd8165644b505.1640270559.git.geert+renesas@glider.be

Currently rcar_pin_to_bias_reg() takes a struct sh_pfc pointer, which is
only available after the pin control driver has been initialized,
thus preventing the checker from calling this function for validating
consistency of the pin control tables.

Fix this by replacing the parameter by a struct sh_pfc_soc_info pointer.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/3065a12dde606bacec9e5f14f10cabeaae75e265.1640270559.git.geert+renesas@glider.be

All implementations of the .pin_to_portcr() method implement the same
conversion from Port Control Register offset to virtual address.  Factor
it out into the two callers.
Remove the pfc parameter, as it is no longer used.

Note that the failure handling in r8a7740_pin_to_portcr() is pro forma,
as the function is never called with an invalid pin number.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/a485d4986a17259256988eb14e3a4c2b8d61c303.1640270559.git.geert+renesas@glider.be

The pfc parameter of the .pin_to_pocctrl() method was never used.
It is a relic of the old I/O voltage handling before commit
8775306d ("pinctrl: sh-pfc: refactor voltage setting").

Remove the parameter, as it prevents the checker from calling this
function for validating consistency of the pin control tables.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/822133086f32618c7fc920123c6a96f5d4ea7ad6.1640270559.git.geert+renesas@glider.be

Pin group vin4_g8 is a subset of vin4_data24_a.
Pin group vin5_high8 is a subset of vin5_data16_a.

This reduces kernel size by 128 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/cfb71c90c19723ba2770f7512f138e4b17857141.1640269757.git.geert+renesas@glider.be