The irq/pin mapping is used to lookup the pin to mux to the irq
function when the irq is enabled. It is created when gpio_to_irq
is called. Creating the mapping during init allows us to map the
interrupts directly from the device tree.
Originally the IRQ to pin mapping was created when gpio_to_irq
was called with a GPIO handle. The mapping in turn is used to mux
the pin into EINT mode.
If the mapping is created during gpio_to_irq, we can't use the
interrupts directly, i.e. through the DT with "interrupts = <&pio A 4>".
Instead we'd have to use "gpios = <&pio A B>", then pass the gpio
through to gpio_to_irq.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The pin numbers passed to sunxi_*_reg helpers to get the correct
registers should be the pin offset for the PIO block, not the
absolute number we use that is based on the alphanumeric labels
Allwinner uses.
This patch subtracts .pin_base from the pin number passed to these
functions, so the driver accesses the correct registers.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
When the support for the PRCM muxer on the A31 has been added, the global
static pinctl_desc definition has been left as is. Unfortunately, this
structure is used to register the pinctrl device, and prior to this
registration, we set the name and pins field.
Since this structure is shared across instances, that means that the latest
registered pinctrl device wins in setting the name, pins and pins numbers,
which is not really a good thing.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The way that reset is handled right now is that it is made optional for every
pinctrl driver, while actually, it isn't used at all for the main pin
controllers so far, and while it's mandatory for the A31's secondary pin
controller.
Move the reset functions out of the core and in the driver, where they can be
made mandatory.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Move the pin description to a driver specific to be.
This is the final step toward retiring pinctrl-sunxi-pins.h that used to define
all the pins for all the Allwinner SoCs in a single header, that would have in
turn result in having these structures in the final binary as many times as the
header was included.
We can finally remove that header, and remove all the driver part of the
pinctrl-sunxi core.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Move the pin description to a driver specific to be. This is one more step
toward retiring pinctrl-sunxi-pins.h that used to define all the pins for all
the Allwinner SoCs in a single header, that would have in turn result in having
these structures in the final binary as many times as the header was included.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Move the pin description to a driver specific to be. This is one more step
toward retiring pinctrl-sunxi-pins.h that used to define all the pins for all
the Allwinner SoCs in a single header, that would have in turn result in having
these structures in the final binary as many times as the header was included.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Move the pin description to a driver specific to be. This is one more step
toward retiring pinctrl-sunxi-pins.h that used to define all the pins for all
the Allwinner SoCs in a single header, that would have in turn result in having
these structures in the final binary as many times as the header was included.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Move the pin description to a driver specific to be. This is one more step
toward retiring pinctrl-sunxi-pins.h that used to define all the pins for all
the Allwinner SoCs in a single header, that would have in turn result in having
these structures in the final binary as many times as the header was included.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Move the pin description to a driver specific to be. This is one more step
toward retiring pinctrl-sunxi-pins.h that used to define all the pins for all
the Allwinner SoCs in a single header, that would have in turn result in having
these structures in the final binary as many times as the header was included.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This will allow to have multiple drivers using the same core code, and
eventually, retire pinctrl-sunxi-pins.h
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The previous code was calling of_iomap, which doesn't do any resource
management, and doesn't call request_mem_region either. Use
devm_ioremap_resource that do both.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
