On Tue, Aug 20, 2024 at 04:36:09PM +0200, Andrea della Porta wrote: > The RP1 is an MFD supporting a gpio controller and /pinmux/pinctrl. > Add minimum support for the gpio only portion. The driver is in > pinctrl folder since upcoming patches will add the pinmux/pinctrl > support where the gpio part can be seen as an addition. > > Signed-off-by: Andrea della Porta <andrea.porta@xxxxxxxx> > --- > MAINTAINERS | 1 + > drivers/pinctrl/Kconfig | 10 + > drivers/pinctrl/Makefile | 1 + > drivers/pinctrl/pinctrl-rp1.c | 719 ++++++++++++++++++++++++++++++++++ > 4 files changed, 731 insertions(+) > create mode 100644 drivers/pinctrl/pinctrl-rp1.c > > diff --git a/MAINTAINERS b/MAINTAINERS > index 4ce7b049d67e..67f460c36ea1 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -19122,6 +19122,7 @@ S: Maintained > F: Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml > F: Documentation/devicetree/bindings/pinctrl/raspberrypi,rp1-gpio.yaml > F: drivers/clk/clk-rp1.c > +F: drivers/pinctrl/pinctrl-rp1.c > F: include/dt-bindings/clock/rp1.h > F: include/dt-bindings/misc/rp1.h > > diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig > index 7e4f93a3bc7a..18bb1a8bd102 100644 > --- a/drivers/pinctrl/Kconfig > +++ b/drivers/pinctrl/Kconfig > @@ -565,6 +565,16 @@ config PINCTRL_MLXBF3 > each pin. This driver can also be built as a module called > pinctrl-mlxbf3. > > +config PINCTRL_RP1 > + bool "Pinctrl driver for RP1" > + select PINMUX > + select PINCONF > + select GENERIC_PINCONF > + select GPIOLIB_IRQCHIP > + help > + Enable the gpio and pinctrl/mux driver for RaspberryPi RP1 > + multi function device. > + > source "drivers/pinctrl/actions/Kconfig" > source "drivers/pinctrl/aspeed/Kconfig" > source "drivers/pinctrl/bcm/Kconfig" > diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile > index cc809669405a..f1ca23b563f6 100644 > --- a/drivers/pinctrl/Makefile > +++ b/drivers/pinctrl/Makefile > @@ -45,6 +45,7 @@ obj-$(CONFIG_PINCTRL_PIC32) += pinctrl-pic32.o > obj-$(CONFIG_PINCTRL_PISTACHIO) += pinctrl-pistachio.o > obj-$(CONFIG_PINCTRL_RK805) += pinctrl-rk805.o > obj-$(CONFIG_PINCTRL_ROCKCHIP) += pinctrl-rockchip.o > +obj-$(CONFIG_PINCTRL_RP1) += pinctrl-rp1.o > obj-$(CONFIG_PINCTRL_SCMI) += pinctrl-scmi.o > obj-$(CONFIG_PINCTRL_SINGLE) += pinctrl-single.o > obj-$(CONFIG_PINCTRL_ST) += pinctrl-st.o > diff --git a/drivers/pinctrl/pinctrl-rp1.c b/drivers/pinctrl/pinctrl-rp1.c > new file mode 100644 > index 000000000000..c035d2014505 > --- /dev/null > +++ b/drivers/pinctrl/pinctrl-rp1.c > @@ -0,0 +1,719 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Driver for Raspberry Pi RP1 GPIO unit > + * > + * Copyright (C) 2023 Raspberry Pi Ltd. > + * > + * This driver is inspired by: > + * pinctrl-bcm2835.c, please see original file for copyright information > + */ > + > +#include <linux/bitmap.h> > +#include <linux/bitops.h> > +#include <linux/bug.h> > +#include <linux/delay.h> > +#include <linux/device.h> > +#include <linux/err.h> > +#include <linux/gpio/driver.h> > +#include <linux/io.h> > +#include <linux/irq.h> > +#include <linux/irqdesc.h> > +#include <linux/init.h> > +#include <linux/of_address.h> > +#include <linux/of.h> > +#include <linux/of_irq.h> > +#include <linux/platform_device.h> > +#include <linux/seq_file.h> > +#include <linux/spinlock.h> > +#include <linux/types.h> Half of these headers are not used. Drop them. Best regards, Krzysztof
