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gpio: rcar: Add GPIO hole support 

GPIO hole is present in RZ/G1C SoC. Valid GPIO pins on bank3 are in the
range GP3_0 to GP3_16 and GP3_27 to GP3_29. The GPIO pins between GP3_17
to GP3_26 are unused. Add support for handling unused GPIO's.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Biju Das 2018-08-07 08:57:02 +01:00 committed by Linus Walleij
parent a419a3d92a
commit 496069b87e
1 changed files with 6 additions and 0 deletions
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6
drivers/gpio/gpio-rcar.c
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@ -321,6 +321,9 @@ static void gpio_rcar_set_multiple(struct gpio_chip *chip, unsigned long *mask,
u32 val, bankmask;
bankmask = mask[0] & GENMASK(chip->ngpio - 1, 0);
if (chip->valid_mask)
bankmask &= chip->valid_mask[0];
if (!bankmask)
return;
@ -558,6 +561,9 @@ static int gpio_rcar_resume(struct device *dev)
u32 mask;
for (offset = 0; offset < p->gpio_chip.ngpio; offset++) {
if (!gpiochip_line_is_valid(&p->gpio_chip, offset))
continue;
mask = BIT(offset);
/* I/O pin */
if (!(p->bank_info.iointsel & mask)) {