- Assorted updates

Add SPL_DWAPB_GPIO configuration option to enable the Designware APB
GPIO driver in SPL builds.

Changes:
- Add SPL_DWAPB_GPIO Kconfig option with SPL_DM_GPIO dependency
- Update Makefile to use CONFIG_$(PHASE_)DWAPB_GPIO pattern for
  conditional compilation in both SPL and main U-Boot builds

Signed-off-by: Tanmay Kathpalia <tanmay.kathpalia@altera.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

There is a condition guard which ensures that the GPIO node, indeed
describes a GPIO controller.

	if (!fdtdec_get_bool(blob, node, "gpio-controller"))
		continue;

Since the bank base is being incremented in the loop, it is done so
irrespective of whether the node is a GPIO controller or not. This leads
to the incorrect resolution of bank base addresses.

Move it out of the loop, and instead increment the bank base address
only if the driver successfully binds a GPIO controller.

Reviewed-by: Henrik Grimler <henrik@grimler.se>
Fixes: b8809e60cdb5 ("dm: exynos: gpio: Convert to driver model")
Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

OMAP GPIO driver needs TI_SYSC to initialize its clocks when
using a devicetree-based setup.

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>

Add support for the GPIO controller block in the R-Car Gen5 SoC family.
The GPIO controller has a General Input Enable Register (INEN), whose
reset state is to have all input disabled. The GPIO controller also has
updated offsets for its control registers. U-Boot uses three registers,
INDT, POSNEG, INEN, which have updated offsets, those are handled by the
driver.

Signed-off-by: Huy Bui <huy.bui.wm@renesas.com>
Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
[Marek: - Access Gen5 specific registers via driver data offsets,
        - Update commit message]

The Renesas R-Car Gen5 GPIO controller has INDT, POSNEG, INEN registers
at different offsets compared to previous generations. Introduce three
new entries in struct rcar_gpio_data {} match data to describe these
register offsets for each GPIO controller. Update the driver to access
these three registers through the match data offsets. No functional
change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

Wrap the RCAR_GPIO_HAS_INEN quirk in more flexible struct rcar_gpio_data {}
in preparation for addition of Renesas R-Car Gen5 GPIO controller support.
The Renesas R-Car Gen5 GPIO controller requires more than a single quirk
to properly describe it, therefore increase the flexibility and introduce
full match data structure, and use it throughout the driver. No functional
change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

Remove register macros for registers which are not used by this driver.
This makes it easier to get an overview of which registers are really
used by the driver. No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

The PFC offset is no longer used directly in the driver since commit
fbf26bea3964 ("gpio: renesas: Migrate to pinctrl GPIO accessors")
Drop the pfc_offset parsing.

Fixes: fbf26bea3964 ("gpio: renesas: Migrate to pinctrl GPIO accessors")
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

If CONFIG_GPIO_HOG is not set, then gpio_hog_lookup_name() is empty,
and thus does not initialize any of its parameters. It does still
return 0 though, and so any calling function might assume that the
parameters have been initialized successfully.

Change the return value to -ENODEV in this case, as the function
would in the case when CONFIG_GPIO_HOG is set but the gpio hog
could not be found.

Signed-off-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Heiko Schocher <hs@nabladev.com>