pinctrl: sunxi: refactor IRQ register accessors

So far on Allwinner SoCs the registers for controlling the IRQ
capabilities of each bank are grouped separately, behind all the pinmux
related register for all banks:
    0x000   0x024      0x144       0x200  0x220     0x320
    PortA   PortB  ... PortJ <gap> IRQ-A  IRQ-B ... IRQ-J

The newest SoCs now group the IRQ registers together with the other
per-bank registers, so we need to change the accessor functions to
account for that:
    0x080 0x0c0   0x100 0x140      0x580 0x5c0
    PortA IRQ-A   PortB IRQ-B  ... PortK IRQ-K

In preparation for supporting those newer SoCs, pass in the pointer to
"struct sunxi_pinctrl" instead of just its member "desc", so that we gain
access to the flags, to later determine which of the layout variants we
need to use. To simplify that, add a new sunxi_irq_base_reg() function
that returns the respective IRQ register base address.
Also split off the IRQ control register base offset (0x200) from each
IRQ register's offset, so that the individual offsets can be added later
separately, to that base address.

No functional change at this point, just refactoring.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>

0 files changed, 0 insertions, 0 deletions