Merge tag 'renesas-pinctrl-for-v5.11-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into devel

pinctrl: renesas: Updates for v5.11

  - Add remaining video-in (VIN) pin groups on R-Car H2 and RZ/G1H,
  - Image size optimizations and code consolidations,
  - Minor fixes and improvements.

The only usage of sh73a0_vccq_mc0_ops is to assign its address to the
ops field in the regulator_desc struct, which is a const pointer. Make
it const to allow the compiler to put it in read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Link: https://lore.kernel.org/r/20201109221012.177478-1-rikard.falkeborn@gmail.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

On SuperH and ARM SH/R-Mobile SoCs, the pin control driver handles
GPIOs, too.  To reduce code size when compiling a kernel supporting only
modern SoCs, most, but not all, of the GPIO functionality is protected
by checks for CONFIG_PINCTRL_SH_FUNC_GPIO.

Factor out the remaining parts when not needed:
  1. sh_pfc_soc_info.{in,out}put describe GPIO pins that have input
     resp. output capabilities (SuperH and SH/R-Mobile).
  2. sh_pfc_soc_info.gpio_irq{,_size} describe the mapping from GPIO
     pins to interrupt numbers (SH/R-Mobile).
  3. sh_pfc_gpio_set_direction() configures GPIO direction, called from
     the GPIO driver through pinctrl_gpio_direction_{in,out}put()
     (SH/R-Mobile).  Unfortunately this function cannot just be moved to
     drivers/pinctrl/renesas/gpio.c, as it relies on knowledge of
     sh_pfc_pinctrl, which is internal to
     drivers/pinctrl/renesas/pinctrl.c.

While code size reduction is minimal, this does help in documenting
depencies.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20201028151637.1734130-9-geert+renesas@glider.be

Currently, the rcar_pinmux_[gs]et_bias() helpers handle only SoCs that
have separate LSI Pin Pull-Enable (PUEN) and Pull-Up/Down Control (PUD)
registers, like R-Car Gen3 and RZ/G2.  Update the function to handle
SoCs that have only LSI Pin Pull-Up Control Register (PUPR), like R-Car
Gen1/Gen2 and RZ/G1.

Reduce code duplication by converting the R-Car M1A pin control driver
to use the common handler.

Note that this changes behavior in case the (invalid!) option
"bias-pull-down" is used in an R-Car M1A DTS: before, it was ignored
silently; after this change, it is considered the same as
"bias-pull-up".
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20201028151637.1734130-8-geert+renesas@glider.be

The handling of the LSI Pin Pull-Up Control Registers (PUPR) on R-Car
M1A uses register offsets instead of register physical addresses.
This is different from the handling on other R-Car parts.

Convert the bias handling from register offsets to physical addresses.
This increases uniformity, and prepares for consolidation of the bias
handling.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20201028151637.1734130-7-geert+renesas@glider.be

All pin control drivers for R-Car Gen3 SoCs contain identical bias
handling.  Reduce code duplication by moving it to the common pinctrl.c
code.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20201028151637.1734130-6-geert+renesas@glider.be

Shrink sh_pfc_pin_config from 8 to 2 bytes:
  - The mux_set flag can be removed, as a non-zero mark value means the
    same (zero = PINMUX_RESERVED is an invalid mark value),
  - The gpio_enabled flag needs only a single bit,
  - Mark values are small integers, and can easily fit in a 15-bit
    bitfield.

This saves 6 bytes per pin when allocating the sh_pfc_pinctrl.configs
array, i.e. it reduces run-time memory consumption by ca. 1.5 KiB.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20201028151637.1734130-5-geert+renesas@glider.be

On arm64, pointer size and alignment is 64-bit, hence a 4-byte hole is
present in between the enum_id and name members of the sh_pfc_pin
structure.  Get rid of this hole by sorting the structure's members by
decreasing size.

This saves up to 1.5 KiB per enabled SoC, and reduces the size of a
kernel including support for all R-Car Gen3 SoCs by more than 10 KiB.

This has no size impact on SH and arm32.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20201028151637.1734130-4-geert+renesas@glider.be

Fix a few singular vs. plural grammar issues in comments.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20201028151637.1734130-3-geert+renesas@glider.be

Commit b13431ed ("pinctrl: sh-pfc: Remove incomplete flag
"cfg->type"") removed the last statement in between the goto and the
label.  Hence remove both.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20201028151637.1734130-2-geert+renesas@glider.be

This driver supports both RZ/G1[MN] and R-Car M2-W/M2-N SoCs.
Optimize pinctrl image size for RZ/G1[MN], when support for R-Car
M2-W/M2-N (R8A779[13]) is not enabled.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20201019124258.4574-7-biju.das.jz@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

This driver supports both RZ/G1H and R-Car H2 SoCs.
Optimize pinctrl image size for RZ/G1H, when support for R-Car H2
(R8A7790) is not enabled.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20201019124258.4574-6-biju.das.jz@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

This driver supports both RZ/G2E and R-Car E3 SoCs.
Optimize pinctrl image size for RZ/G2E, when support for R-Car E3
(R8A77990) is not enabled.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20201019124258.4574-5-biju.das.jz@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

This driver supports both RZ/G2N and R-Car M3-N SoCs.
Optimize pinctrl image size for RZ/G2N, when support for R-Car M3-N
(R8A77965) is not enabled.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20201019124258.4574-4-biju.das.jz@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

This driver supports both RZ/G2M and R-Car M3-W/W+ SoCs.
Optimize pinctrl image size for RZ/G2M, when support for R-Car M3-W/W+
(R8A7796[01]) is not enabled.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20201019132805.5996-1-biju.das.jz@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

This driver supports both RZ/G2H and R-Car H3 ES2 SoCs.
Optimize pinctrl image size for RZ/G2H, when support for R-Car H3 ES2
(R8A77951) is not enabled.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20201019124258.4574-2-biju.das.jz@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Replace the two separate calls for setting the irq handler and data with a
single irq_set_chained_handler_and_data() call.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20201108180144.28594-1-martin@kaiser.cxSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Commit be117ca3 ("pinctrl: qcom: Kconfig: Rework PINCTRL_MSM to be a
dependency rather then a selected config") moved the qcom pinctrl drivers
to have PINCTRL_MSM as dependency rather then a selected config, so do
this change for SDX55 pinctrl driver as well.
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20201111043610.177168-1-vkoul@kernel.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

We need a more granular distribution among funcion A
and function B for the LCD pins for the Samsung
GT-I9070. Provide some new pin groups so we can
configure this phone properly.

Link: https://lore.kernel.org/r/20201110232330.2242167-1-linus.walleij@linaro.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add initial Qualcomm SDX55 pinctrl driver to support pin configuration
with pinctrl framework for SDX55 SoC.

[ported from downstream and tidy up]
Signed-off-by: Jeevan Shriram <jshriram@codeaurora.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20201109062620.14566-3-vkoul@kernel.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add device tree binding Documentation details for Qualcomm SDX55
pinctrl driver.
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/20201109062620.14566-2-vkoul@kernel.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This patch adds support for Serval pinctrl, using the ocelot driver as
basis. It adds pinconfig support as well, as supported by the
platform.

gclement: Split from a larger patch adding support all platforms in
the same time.
Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Link: https://lore.kernel.org/r/20201106093118.965152-5-gregory.clement@bootlin.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This patch adds support for Luton pinctrl, using the ocelot driver as
basis. It adds pinconfig support as well, as supported by the
platform.

gclement: Split from a larger patch adding support all platforms in
the same time.
Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Link: https://lore.kernel.org/r/20201106093118.965152-4-gregory.clement@bootlin.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add the documentation for the Microsemi Serval pinmuxing and gpio
controller.
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Link: https://lore.kernel.org/r/20201106093118.965152-3-gregory.clement@bootlin.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add the documentation for the Microsemi Luton pinmuxing and gpio
controller.
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Link: https://lore.kernel.org/r/20201106093118.965152-2-gregory.clement@bootlin.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Fix the following coccicheck warning:

./drivers/pinctrl/pinctrl-ocelot.c:732:28-33: WARNING: conversion to bool not needed here
Reported-by: Tosk Robot <tencent_os_robot@tencent.com>
Signed-off-by: Kaixu Xia <kaixuxia@tencent.com>
Link: https://lore.kernel.org/r/1604651795-1220-1-git-send-email-kaixuxia@tencent.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Allow the qcom_scm driver to be loadable as a permenent module.

This still uses the "depends on QCOM_SCM || !QCOM_SCM" bit to
ensure that drivers that call into the qcom_scm driver are
also built as modules. While not ideal in some cases its the
only safe way I can find to avoid build errors without having
those drivers select QCOM_SCM and have to force it on (as
QCOM_SCM=n can be valid for those drivers).
Signed-off-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Maulik Shah <mkshah@codeaurora.org>
Cc: Lina Iyer <ilina@codeaurora.org>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Todd Kjos <tkjos@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: iommu@lists.linux-foundation.org
Cc: linux-gpio@vger.kernel.org
Link: https://lore.kernel.org/r/20201106042710.55979-3-john.stultz@linaro.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Tweaks to allow pinctrl-msm code to be loadable as a module.

This is needed in order to support having the qcom-scm driver,
which pinctrl-msm calls into, configured as a module.

This requires that we tweak Kconfigs selecting PINCTRL_MSM to
also depend on QCOM_SCM || QCOM_SCM=n so that we match the
module setting of QCOM_SCM.
Signed-off-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Maulik Shah <mkshah@codeaurora.org>
Cc: Lina Iyer <ilina@codeaurora.org>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Todd Kjos <tkjos@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: iommu@lists.linux-foundation.org
Cc: linux-gpio@vger.kernel.org
Link: https://lore.kernel.org/r/20201106042710.55979-2-john.stultz@linaro.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This patch reworks PINCTRL_MSM to be a visible option, and
instead of having the various SoC specific drivers select
PINCTRL_MSM, this switches those configs to depend on
PINCTRL_MSM.

This is useful, as it will be needed in order to cleanly support
having the qcom-scm driver, which pinctrl-msm calls into,
configured as a module. Without this change, we would eventually
have to add dependency lines to every config that selects
PINCTRL_MSM, and that would becomes a maintenance headache.

We also add PINCTRL_MSM to the arm64 defconfig to avoid
surprises as otherwise PINCTRL_MSM/IPQ* options previously
enabled, will be off.
Signed-off-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Maulik Shah <mkshah@codeaurora.org>
Cc: Lina Iyer <ilina@codeaurora.org>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Todd Kjos <tkjos@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: iommu@lists.linux-foundation.org
Cc: linux-gpio@vger.kernel.org
Link: https://lore.kernel.org/r/20201106042710.55979-1-john.stultz@linaro.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Print the status of debounce filter as follows,

$ cat /sys/kernel/debug/gpio
pin129 interrupt is disabled | interrupt is masked |
  disable wakeup in S0i3 state | disable wakeup in S3 state |
  disable wakeup in S4/S5 state| input is high | pull-up is disabled |
  Pull-down is disabled | output is disabled |
  debouncing filter disabled | 0x50000

pin130 interrupt is disabled | interrupt is masked |
  disable wakeup in S0i3 state | disable wakeup in S3 state |
  disable wakeup in S4/S5 state | input is high | pull-up is disabled |
  Pull-down is disabled | output is disabled |
  debouncing filter (high) enabled |
  debouncing timeout is 124800 (us)| 0x503c8
Signed-off-by: Coiby Xu <coiby.xu@gmail.com>
Link: https://lore.kernel.org/r/20201105231912.69527-4-coiby.xu@gmail.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add the "lcd-8bit" group to the "lcd" function.

As "lcd-24bit" is a superset of "lcd-8bit", in theory the former could
be modified to only contain the pins not already included in "lcd-8bit",
just like how it's done for the JZ4740 and JZ4725B platforms. However,
we can't do that without breaking Device Tree ABI, so in that case we
have no choice but to have two groups containing the same pins.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Link: https://lore.kernel.org/r/20201101090104.5088-3-paul@crapouillou.netSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Abuse the pin function pointer to store the pin function value directly,
when all the pins of a group have the same function value. Now when the
pointer value is <= 3 (unsigned), the pointer value is used as the pin
function; otherwise it is used as a regular pointer.

This drastically reduces the number of pin function tables needed, and
drops .data usage by about 2 KiB. Additionally, the few pin function
tables that are still around now contain u8 instead of int, since the
largest number that will be stored is 3.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Link: https://lore.kernel.org/r/20201101090104.5088-2-paul@crapouillou.netSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

mt7622 is reported by mediatek to have only 6 pwm channels
so drop pindefines for 7th channel
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Acked-by: Sean Wang <sean.wang@kernel.org>
Link: https://lore.kernel.org/r/20201016204019.2606-4-linux@fw-web.deSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add device tree bindings documentation for Qualcomm MSM8953
pinctrl driver.
Signed-off-by: Vladimir Lypak <junak.pub@gmail.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201007160611.942754-2-junak.pub@gmail.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add inititial pinctrl driver for MSM8953 platform. Compatible SoCs are:
MSM8953, APQ8053, SDM(SDA)450, SDM(SDA)632.
Based off CAF implementation.
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: Vladimir Lypak <junak.pub@gmail.com>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20201007160611.942754-1-junak.pub@gmail.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

On 64-bit platforms, pointer size and alignment are 64-bit, hence two
4-byte holes are present before the pins and gc members of the
pinctrl_gpio_range structure.  Get rid of these holes by moving the
pins pointer.

This reduces kernel size of an arm64 Rockchip kernel by ca. 512 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20201028145117.1731876-1-geert+renesas@glider.beSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

To fix the following build warnings when CONFIG_GPIOLIB=n.

drivers/pinctrl/core.c:1607:20: warning: unused variable 'chip' [-Wunused-variable]
 1608 |  struct gpio_chip *chip;
      |                    ^~~~
drivers/pinctrl/core.c:1606:15: warning: unused variable 'gpio_num' [-Wunused-variable]
 1607 |  unsigned int gpio_num;
      |               ^~~~~~~~
drivers/pinctrl/core.c:1605:29: warning: unused variable 'range' [-Wunused-variable]
 1606 |  struct pinctrl_gpio_range *range;
      |                             ^~~~~

Fixes: f1b206cf ("pinctrl: core: print gpio in pins debugfs file")
Signed-off-by: He Zhe <zhe.he@windriver.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20201028103921.22486-1-zhe.he@windriver.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Enable pinctrl drivers for 64-bit Amlogic SoCs to be built as modules.

The default is still built-in, this only adds the option of building
as modules.
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20201026183025.31768-1-khilman@baylibre.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add pins, groups and functions for the VIN1-B [data/sync/field/clkenb/clk]
and VIN2-G8.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu>
Link: https://lore.kernel.org/r/20200917195924.20384-1-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>