[RFC PATCH 3/5] gpio: generic: add io_port to struct gpio_generic_chip

[Jose Javier Rodriguez Barbarin]

Add an io_port field to struct gpio_generic_chip. Initialize it
depending on whether the GPIO_GENERIC_PORT_MAPPED flag is set.

Signed-off-by: Jose Javier Rodriguez Barbarin <dev-josejavier.rodriguez@xxxxxxxxxx>
---
 drivers/gpio/gpio-mmio.c     | 1 +
 include/linux/gpio/generic.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/gpio/gpio-mmio.c b/drivers/gpio/gpio-mmio.c
index edbcaad57d00..37e1ed6569e6 100644
--- a/drivers/gpio/gpio-mmio.c
+++ b/drivers/gpio/gpio-mmio.c
@@ -645,6 +645,7 @@ int gpio_generic_chip_init(struct gpio_generic_chip *chip,
 	gc->base = -1;
 	gc->request = gpio_mmio_request;
 	chip->be_bits = !!(flags & GPIO_GENERIC_BIG_ENDIAN);
+	chip->io_port = !!(flags & GPIO_GENERIC_PORT_MAPPED);
 
 	ret = gpiochip_get_ngpios(gc, dev);
 	if (ret)
diff --git a/include/linux/gpio/generic.h b/include/linux/gpio/generic.h
index 9a71a8fbe56e..eec63f8fe144 100644
--- a/include/linux/gpio/generic.h
+++ b/include/linux/gpio/generic.h
@@ -111,6 +111,7 @@ struct gpio_generic_chip {
 	unsigned long (*read_reg)(void __iomem *reg);
 	void (*write_reg)(void __iomem *reg, unsigned long data);
 	bool be_bits;
+	bool io_port;
 	void __iomem *reg_dat;
 	void __iomem *reg_set;
 	void __iomem *reg_clr;
-- 
2.53.0