From: Rosen Penev <rosenp@gmail.com>
To: linux-gpio@vger.kernel.org
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>,
chleroy@kernel.org, Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
Linus Walleij <linusw@kernel.org>,
Bartosz Golaszewski <brgl@kernel.org>,
linuxppc-dev@lists.ozlabs.org (open list:LINUX FOR POWERPC
(32-BIT AND 64-BIT)), linux-kernel@vger.kernel.org (open list)
Subject: [PATCH 1/7] gpio: move ppc4xx gpio driver from arch/powerpc to drivers/gpio
Date: Mon, 1 Jun 2026 22:01:25 -0700 [thread overview]
Message-ID: <20260602050131.856789-2-rosenp@gmail.com> (raw)
In-Reply-To: <20260602050131.856789-1-rosenp@gmail.com>
Move the ppc4xx gpio driver out of arch/powerpc/platforms/44x/ into
drivers/gpio/gpio-ppc44x.c. The driver has no architecture-specific
dependencies and follows the same pattern as other PowerPC GPIO
drivers already in drivers/gpio/ (e.g. gpio-mpc8xxx, gpio-mpc5200).
- Renamed Kconfig symbol from PPC4xx_GPIO to GPIO_PPC44X
- Updated ppc44x_defconfig and warp_defconfig to use the new symbol
- Marked the new option as tristate (was bool) since the driver
supports module build via module_platform_driver()
Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
arch/powerpc/configs/44x/warp_defconfig | 2 +-
arch/powerpc/configs/ppc44x_defconfig | 2 +-
arch/powerpc/platforms/44x/Kconfig | 7 -------
arch/powerpc/platforms/44x/Makefile | 2 +-
drivers/gpio/Kconfig | 8 ++++++++
drivers/gpio/Makefile | 1 +
.../platforms/44x/gpio.c => drivers/gpio/gpio-ppc44x.c | 0
7 files changed, 12 insertions(+), 10 deletions(-)
rename arch/powerpc/platforms/44x/gpio.c => drivers/gpio/gpio-ppc44x.c (100%)
diff --git a/arch/powerpc/configs/44x/warp_defconfig b/arch/powerpc/configs/44x/warp_defconfig
index 5757625469c4..d6014b9c5708 100644
--- a/arch/powerpc/configs/44x/warp_defconfig
+++ b/arch/powerpc/configs/44x/warp_defconfig
@@ -12,7 +12,7 @@ CONFIG_MODULE_UNLOAD=y
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_EBONY is not set
CONFIG_WARP=y
-CONFIG_PPC4xx_GPIO=y
+CONFIG_GPIO_PPC44X=y
CONFIG_HZ_1000=y
CONFIG_CMDLINE="ip=on"
# CONFIG_PCI is not set
diff --git a/arch/powerpc/configs/ppc44x_defconfig b/arch/powerpc/configs/ppc44x_defconfig
index 41c930f74ed4..b0c7ad8c6d9b 100644
--- a/arch/powerpc/configs/ppc44x_defconfig
+++ b/arch/powerpc/configs/ppc44x_defconfig
@@ -22,7 +22,7 @@ CONFIG_GLACIER=y
CONFIG_REDWOOD=y
CONFIG_EIGER=y
CONFIG_YOSEMITE=y
-CONFIG_PPC4xx_GPIO=y
+CONFIG_GPIO_PPC44X=y
CONFIG_MATH_EMULATION=y
CONFIG_NET=y
CONFIG_PACKET=y
diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
index fc79f8466933..150813cea945 100644
--- a/arch/powerpc/platforms/44x/Kconfig
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -227,13 +227,6 @@ config PPC44x_SIMPLE
help
This option enables the simple PowerPC 44x platform support.
-config PPC4xx_GPIO
- bool "PPC4xx GPIO support"
- depends on 44x
- select GPIOLIB
- help
- Enable gpiolib support for ppc440 based boards
-
# 44x specific CPU modules, selected based on the board above.
config 440EP
bool
diff --git a/arch/powerpc/platforms/44x/Makefile b/arch/powerpc/platforms/44x/Makefile
index ca7b1bb442d9..4598d8b89bf4 100644
--- a/arch/powerpc/platforms/44x/Makefile
+++ b/arch/powerpc/platforms/44x/Makefile
@@ -15,4 +15,4 @@ obj-$(CONFIG_FSP2) += fsp2.o
obj-$(CONFIG_PCI) += pci.o
obj-$(CONFIG_PPC4xx_HSTA_MSI) += hsta_msi.o
obj-$(CONFIG_PPC4xx_CPM) += cpm.o
-obj-$(CONFIG_PPC4xx_GPIO) += gpio.o
+
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 89c77ec6c205..77991da43ec1 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -593,6 +593,14 @@ config GPIO_POLARFIRE_SOC
help
Say yes here to support the GPIO controllers on Microchip FPGAs.
+config GPIO_PPC44X
+ tristate "PPC44x GPIO support"
+ depends on 44x
+ select GPIO_GENERIC
+ select GPIOLIB
+ help
+ Enable gpiolib support for ppc440 based boards.
+
config GPIO_PXA
bool "PXA GPIO support"
depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 8ec03c9aec20..9e8c9ca1d3fb 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -146,6 +146,7 @@ obj-$(CONFIG_GPIO_PCIE_IDIO_24) += gpio-pcie-idio-24.o
obj-$(CONFIG_GPIO_PCI_IDIO_16) += gpio-pci-idio-16.o
obj-$(CONFIG_GPIO_PISOSR) += gpio-pisosr.o
obj-$(CONFIG_GPIO_PL061) += gpio-pl061.o
+obj-$(CONFIG_GPIO_PPC44X) += gpio-ppc44x.o
obj-$(CONFIG_GPIO_PMIC_EIC_SPRD) += gpio-pmic-eic-sprd.o
obj-$(CONFIG_GPIO_POLARFIRE_SOC) += gpio-mpfs.o
obj-$(CONFIG_GPIO_PXA) += gpio-pxa.o
diff --git a/arch/powerpc/platforms/44x/gpio.c b/drivers/gpio/gpio-ppc44x.c
similarity index 100%
rename from arch/powerpc/platforms/44x/gpio.c
rename to drivers/gpio/gpio-ppc44x.c
--
2.54.0
next prev parent reply other threads:[~2026-06-02 5:01 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-02 5:01 [PATCH 0/7] gpio: move ppc4xx driver to drivers/gpio and modernize Rosen Penev
2026-06-02 5:01 ` Rosen Penev [this message]
2026-06-02 5:01 ` [PATCH 2/7] gpio: ppc44x: Use module platform driver helper for GPIO Rosen Penev
2026-06-02 5:01 ` [PATCH 3/7] gpio: ppc44x: Set GPIO chip firmware node Rosen Penev
2026-06-02 5:01 ` [PATCH 4/7] gpio: ppc44x: Use platform resource helper for GPIO MMIO Rosen Penev
2026-06-02 5:01 ` [PATCH 5/7] gpio: ppc44x: Convert GPIO to generic MMIO Rosen Penev
2026-06-02 7:51 ` Bartosz Golaszewski
2026-06-02 9:26 ` Rosen Penev
2026-06-02 5:01 ` [PATCH 6/7] gpio: ppc44x: drop PPC-specific IO helpers and rename to ppc44x Rosen Penev
2026-06-02 5:01 ` [PATCH 7/7] gpio: ppc44x: add MODULE info Rosen Penev
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