gpiolib: allow to specify the firmware node in struct gpio_chip

Software nodes allow us to represent hierarchies for device components
that don't have their struct device representation yet - for instance:
banks of GPIOs under a common GPIO expander. The core gpiolib core
however doesn't offer any way of passing this information from the
drivers.

This extends struct gpio_chip with a pointer to fwnode that can be set
by the driver and used to pass device properties for child nodes.

This is similar to how we handle device-tree sub-nodes with
CONFIG_OF_GPIO enabled.

Signed-off-by: Bartosz Golaszewski <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Acked-by: Linus Walleij <[email protected]>

0 files changed, 0 insertions, 0 deletions