[PATCH 00/21] gpiolib: fence off legacy interfaces

[PATCH 00/21] gpiolib: fence off legacy interfaces

[Arnd Bergmann]

From: Arnd Bergmann <arnd@arndb.de>

Commit 678bae2eaa81 ("gpiolib: make legacy interfaces optional") was
merged for linux-6.17, so now it is possible to use the legacy interfaces
conditionally and eventually have the support left out of the kernel
whenever it is not needed.

I created six patches to force-enable CONFIG_GPIOLIB_LEGACY on the
few (mostly ancient) platforms that still require this, plus a set of
patches to either add the corresponding Kconfig dependencies that make
the device drivers conditional on that symbol, or change them to no
longer require it.

The final patch ends up turning the Kconfig symbol off by default,
which of course depends on everything else getting merged first to avoid
build errors.

I would suggest that patches 1-20 can just get merged through the
respective maintainer trees independently when they are deemed ready,
and the final patch can wait another merge window.

     Arnd

Arnd Bergmann (21):
  ARM: select legacy gpiolib interfaces where used
  m68k: coldfire: select legacy gpiolib interface for mcfqspi
  mips: select legacy gpiolib interfaces where used
  sh: select legacy gpiolib interface
  x86/platform: select legacy gpiolib interfaces where used
  x86/olpc: select GPIOLIB_LEGACY
  mfd: wm8994: remove dead legacy-gpio code
  ASoC: add GPIOLIB_LEGACY dependency where needed
  input: gpio-keys: make legacy gpiolib optional
  leds: gpio: make legacy gpiolib interface optional
  media: em28xx: add special case for legacy gpiolib interface
  mfd: arizona: make legacy gpiolib interface optional
  mfd: si476x: add GPIOLIB_LEGACY dependency
  mfd: aat2870: add GPIOLIB_LEGACY dependency
  dsa: b53: hide legacy gpiolib usage on non-mips
  ath10k: remove gpio number assignment
  nfc: marvell: convert to gpio descriptors
  nfc: s3fwrn5: convert to gpio descriptors
  usb: udc: pxa: remove unused platform_data
  ASoC: pxa: add GPIOLIB_LEGACY dependency
  gpiolib: turn off legacy interface by default

 arch/arm/mach-mv78xx0/Kconfig                 |  1 +
 arch/arm/mach-orion5x/Kconfig                 |  1 +
 arch/arm/mach-pxa/Kconfig                     |  1 +
 arch/arm/mach-pxa/devices.c                   |  7 --
 arch/arm/mach-pxa/gumstix.c                   |  1 -
 arch/arm/mach-pxa/udc.h                       |  8 --
 arch/arm/mach-s3c/Kconfig.s3c64xx             |  1 +
 arch/arm/mach-sa1100/Kconfig                  |  1 +
 arch/m68k/Kconfig.cpu                         |  1 +
 arch/mips/Kconfig                             |  5 +
 arch/mips/alchemy/Kconfig                     |  1 -
 arch/mips/txx9/Kconfig                        |  1 +
 arch/sh/Kconfig                               |  1 +
 arch/sh/boards/Kconfig                        |  8 ++
 arch/sh/boards/mach-highlander/Kconfig        |  1 +
 arch/sh/boards/mach-rsk/Kconfig               |  3 +
 arch/x86/Kconfig                              |  1 +
 drivers/gpio/Kconfig                          | 11 ++-
 drivers/input/keyboard/gpio_keys.c            |  5 +-
 drivers/input/keyboard/gpio_keys_polled.c     |  2 +
 drivers/input/misc/Kconfig                    |  3 +
 drivers/leds/leds-gpio.c                      |  8 +-
 drivers/media/usb/em28xx/Kconfig              |  1 +
 drivers/media/usb/em28xx/em28xx-dvb.c         |  4 +-
 drivers/mfd/Kconfig                           |  2 +
 drivers/mfd/arizona-irq.c                     |  5 +-
 drivers/mfd/rohm-bd71828.c                    |  2 +
 drivers/mfd/rohm-bd718x7.c                    |  2 +
 drivers/mfd/wm8994-irq.c                      | 94 +------------------
 drivers/net/dsa/b53/b53_common.c              | 17 +---
 drivers/net/dsa/b53/b53_priv.h                | 24 +++--
 drivers/net/wireless/ath/ath10k/leds.c        |  3 +-
 drivers/nfc/nfcmrvl/main.c                    | 47 +++-------
 drivers/nfc/nfcmrvl/nfcmrvl.h                 |  5 +-
 drivers/nfc/nfcmrvl/uart.c                    |  5 -
 drivers/nfc/nfcmrvl/usb.c                     |  1 -
 drivers/nfc/s3fwrn5/i2c.c                     | 42 +++------
 drivers/nfc/s3fwrn5/phy_common.c              | 12 +--
 drivers/nfc/s3fwrn5/phy_common.h              |  4 +-
 drivers/nfc/s3fwrn5/uart.c                    | 30 ++----
 drivers/platform/x86/Kconfig                  |  3 +
 .../platform/x86/x86-android-tablets/Kconfig  |  1 +
 drivers/usb/gadget/udc/pxa25x_udc.c           | 41 +++-----
 drivers/usb/gadget/udc/pxa25x_udc.h           |  2 +-
 drivers/usb/gadget/udc/pxa27x_udc.c           | 35 +------
 drivers/usb/gadget/udc/pxa27x_udc.h           |  2 -
 include/linux/gpio_keys.h                     |  2 +
 include/linux/leds.h                          |  2 +
 include/linux/mfd/arizona/pdata.h             |  6 ++
 include/linux/mfd/wm8994/pdata.h              |  5 -
 include/linux/platform_data/pxa2xx_udc.h      | 15 ---
 sound/pci/Kconfig                             |  1 +
 sound/soc/codecs/Kconfig                      |  4 +
 sound/soc/codecs/arizona-jack.c               | 17 +++-
 sound/soc/pxa/Kconfig                         |  4 +-
 55 files changed, 192 insertions(+), 320 deletions(-)
 delete mode 100644 arch/arm/mach-pxa/udc.h

-- 
2.39.5

Cc: Linus Walleij <linus.walleij@linaro.org> (maintainer:GPIO SUBSYSTEM,commit_signer:1/2=50%)
Cc: Bartosz Golaszewski <brgl@bgdev.pl> (maintainer:GPIO SUBSYSTEM,commit_signer:1/7=14%,commit_signer:1/2=50%)
Cc: linux-gpio@vger.kernel.org (open list:GPIO SUBSYSTEM)

Cc: Andrew Lunn <andrew@lunn.ch> (maintainer:ARM/Marvell Dove/MV78xx0/Orion SOC support)
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> (maintainer:ARM/Marvell Dove/MV78xx0/Orion SOC support)
Cc: Gregory Clement <gregory.clement@bootlin.com> (maintainer:ARM/Marvell Dove/MV78xx0/Orion SOC support)
Cc: Russell King <linux@armlinux.org.uk> (maintainer:ARM PORT)
Cc: Daniel Mack <daniel@zonque.org> (maintainer:PXA2xx/PXA3xx SUPPORT)
Cc: Haojian Zhuang <haojian.zhuang@gmail.com> (maintainer:PXA2xx/PXA3xx SUPPORT)
Cc: Robert Jarzmik <robert.jarzmik@free.fr> (maintainer:PXA2xx/PXA3xx SUPPORT)
Cc: Krzysztof Kozlowski <krzk@kernel.org> (maintainer:ARM/SAMSUNG S3C, S5P AND EXYNOS ARM ARCHITECTURES,commit_signer:1/2=50%)
Cc: Alim Akhtar <alim.akhtar@samsung.com> (reviewer:ARM/SAMSUNG S3C, S5P AND EXYNOS ARM ARCHITECTURES)
Cc: Geert Uytterhoeven <geert@linux-m68k.org> (maintainer:M68K ARCHITECTURE,commit_signer:1/4=25%,authored:1/4=25%,added_lines:2/13=15%,removed_lines:2/6=33%)
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> (maintainer:MIPS)
Cc: Yoshinori Sato <ysato@users.sourceforge.jp> (maintainer:SUPERH)
Cc: Rich Felker <dalias@libc.org> (maintainer:SUPERH)
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> (maintainer:SUPERH,commit_signer:2/4=50%)
Cc: Thomas Gleixner <tglx@linutronix.de> (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT),added_lines:4/36=11%,removed_lines:6/49=12%)
Cc: Ingo Molnar <mingo@redhat.com> (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT))
Cc: Borislav Petkov <bp@alien8.de> (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT))
Cc: Dave Hansen <dave.hansen@linux.intel.com> (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT))
Cc: x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT))
Cc: "H. Peter Anvin" <hpa@zytor.com> (reviewer:X86 ARCHITECTURE (32-BIT AND 64-BIT))
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> (maintainer:INPUT (KEYBOARD, MOUSE, JOYSTICK, TOUCHSCREEN)...,commit_signer:5/7=71%,authored:1/7=14%,added_lines:17/36=47%,removed_lines:27/49=55%,commit_signer:1/2=50%,commit_signer:3/5=60%)
Cc: Lee Jones <lee@kernel.org> (maintainer:LED SUBSYSTEM,commit_signer:2/5=40%)
Cc: Pavel Machek <pavel@kernel.org> (maintainer:LED SUBSYSTEM)
Cc: Mauro Carvalho Chehab <mchehab@kernel.org> (maintainer:EM28XX VIDEO4LINUX DRIVER)
Cc: Matti Vaittinen <mazziesaccount@gmail.com> (maintainer:ROHM POWER MANAGEMENT IC DEVICE DRIVERS)
Cc: Florian Fainelli <florian.fainelli@broadcom.com> (maintainer:BROADCOM B53/SF2 ETHERNET SWITCH DRIVER)
Cc: Jeff Johnson <jjohnson@kernel.org> (maintainer:QUALCOMM ATHEROS ATH10K WIRELESS DRIVER)
Cc: Hans de Goede <hansg@kernel.org> (maintainer:X86 PLATFORM DRIVERS,commit_signer:1/7=14%)
Cc: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com> (maintainer:X86 PLATFORM DRIVERS)
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> (maintainer:USB SUBSYSTEM)
Cc: Jaroslav Kysela <perex@perex.cz> (maintainer:SOUND)
Cc: Takashi Iwai <tiwai@suse.com> (maintainer:SOUND,commit_signer:1/3=33%,authored:1/3=33%,removed_lines:2/2=100%)
Cc: Liam Girdwood <lgirdwood@gmail.com> (maintainer:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM...)
Cc: Mark Brown <broonie@kernel.org> (maintainer:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM...,commit_signer:26/29=90%,commit_signer:1/3=33%)
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> (authored:1/7=14%,added_lines:4/36=11%,removed_lines:6/49=12%,commit_signer:1/2=50%,authored:1/2=50%,added_lines:5/7=71%,removed_lines:7/7=100%,added_lines:7/7=100%,removed_lines:2/7=29%)
Cc: "Dr. David Alan Gilbert" <linux@treblig.org> (commit_signer:1/5=20%,authored:1/5=20%,removed_lines:7/10=70%)
Cc: linux-arm-kernel@lists.infradead.org (moderated list:ARM/Marvell Dove/MV78xx0/Orion SOC support)
Cc: linux-kernel@vger.kernel.org (open list)
Cc: linux-samsung-soc@vger.kernel.org (open list:ARM/SAMSUNG S3C, S5P AND EXYNOS ARM ARCHITECTURES)
Cc: linux-m68k@lists.linux-m68k.org (open list:M68K ARCHITECTURE)
Cc: linux-mips@vger.kernel.org (open list:MIPS)
Cc: linux-sh@vger.kernel.org (open list:SUPERH)
Cc: linux-input@vger.kernel.org (open list:INPUT (KEYBOARD, MOUSE, JOYSTICK, TOUCHSCREEN)...)
Cc: linux-leds@vger.kernel.org (open list:LED SUBSYSTEM)
Cc: linux-media@vger.kernel.org (open list:EM28XX VIDEO4LINUX DRIVER)
Cc: patches@opensource.cirrus.com (open list:WOLFSON MICROELECTRONICS DRIVERS)
Cc: netdev@vger.kernel.org (open list:BROADCOM B53/SF2 ETHERNET SWITCH DRIVER)
Cc: linux-wireless@vger.kernel.org (open list:QUALCOMM ATHEROS ATH10K WIRELESS DRIVER)
Cc: ath10k@lists.infradead.org (open list:QUALCOMM ATHEROS ATH10K WIRELESS DRIVER)
Cc: platform-driver-x86@vger.kernel.org (open list:X86 PLATFORM DRIVERS)
Cc: linux-usb@vger.kernel.org (open list:USB SUBSYSTEM)
Cc: linux-sound@vger.kernel.org (open list:SOUND)

[PATCH 02/21] m68k: coldfire: select legacy gpiolib interface for mcfqspi

[Arnd Bergmann]

From: Arnd Bergmann <arnd@arndb.de>

The common coldfire code uses the old GPIO number based interfaces for
at least the QSPI chipselect lines. Select the required Kconfig symbol
to keep it building when that becomes optional.

Apparently there are no devices attached to a QSPI controller in any of
the coldfire boards, so this is not actually used in upstream kernels.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/m68k/Kconfig.cpu | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu
index c9a7e602d8a4..148f8a79d206 100644
--- a/arch/m68k/Kconfig.cpu
+++ b/arch/m68k/Kconfig.cpu
@@ -30,6 +30,7 @@ config COLDFIRE
 	select CPU_HAS_NO_MULDIV64
 	select GENERIC_CSUM
 	select GPIOLIB
+	select GPIOLIB_LEGACY if SPI_COLDFIRE_QSPI
 	select HAVE_LEGACY_CLK
 	select HAVE_PAGE_SIZE_8KB if !MMU
 
-- 
2.39.5

Re: [PATCH 00/21] gpiolib: fence off legacy interfaces

[Bartosz Golaszewski]

On Fri, 8 Aug 2025 17:17:44 +0200, Arnd Bergmann <arnd@kernel.org> said:
> From: Arnd Bergmann <arnd@arndb.de>
>
> Commit 678bae2eaa81 ("gpiolib: make legacy interfaces optional") was
> merged for linux-6.17, so now it is possible to use the legacy interfaces
> conditionally and eventually have the support left out of the kernel
> whenever it is not needed.
>
> I created six patches to force-enable CONFIG_GPIOLIB_LEGACY on the
> few (mostly ancient) platforms that still require this, plus a set of
> patches to either add the corresponding Kconfig dependencies that make
> the device drivers conditional on that symbol, or change them to no
> longer require it.
>
> The final patch ends up turning the Kconfig symbol off by default,
> which of course depends on everything else getting merged first to avoid
> build errors.
>
> I would suggest that patches 1-20 can just get merged through the
> respective maintainer trees independently when they are deemed ready,
> and the final patch can wait another merge window.
>

Oh, not at all, I'm fine sending a second PR late into the merge window to
get that done in a single cycle.

Thanks for doing this, awesome work!

Bartosz

Re: (subset) [PATCH 00/21] gpiolib: fence off legacy interfaces

[Mark Brown]

On Fri, 08 Aug 2025 17:17:44 +0200, Arnd Bergmann wrote:
> Commit 678bae2eaa81 ("gpiolib: make legacy interfaces optional") was
> merged for linux-6.17, so now it is possible to use the legacy interfaces
> conditionally and eventually have the support left out of the kernel
> whenever it is not needed.
> 
> I created six patches to force-enable CONFIG_GPIOLIB_LEGACY on the
> few (mostly ancient) platforms that still require this, plus a set of
> patches to either add the corresponding Kconfig dependencies that make
> the device drivers conditional on that symbol, or change them to no
> longer require it.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[08/21] ASoC: add GPIOLIB_LEGACY dependency where needed
        commit: 5383d67e2430822fa7bd20dcbbebbd8ae808e386
[20/21] ASoC: pxa: add GPIOLIB_LEGACY dependency
        commit: 2d86d2585ab929a143d1e6f8963da1499e33bf13

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

Re: (subset) [PATCH 00/21] gpiolib: fence off legacy interfaces

[Lee Jones]

On Fri, 08 Aug 2025 17:17:44 +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> Commit 678bae2eaa81 ("gpiolib: make legacy interfaces optional") was
> merged for linux-6.17, so now it is possible to use the legacy interfaces
> conditionally and eventually have the support left out of the kernel
> whenever it is not needed.
> 
> [...]

Applied, thanks!

[12/21] mfd: arizona: make legacy gpiolib interface optional
        commit: 12f6c0afc8987d72017a3ecf7c1183cb951b0d24
[13/21] mfd: si476x: add GPIOLIB_LEGACY dependency
        commit: 1ae250257e43b3fba225e4f8ea7d87125dc861ae
[14/21] mfd: aat2870: add GPIOLIB_LEGACY dependency
        commit: 3144986f37911f131f373743f294b2941a8ef37c

--
Lee Jones [李琼斯]