diff options
| author | Bartosz Golaszewski <brgl@bgdev.pl> | 2021-12-13 13:16:41 +0300 |
|---|---|---|
| committer | Bartosz Golaszewski <brgl@bgdev.pl> | 2021-12-17 14:26:12 +0300 |
| commit | 990f6756bb64756d2d1033118cded6333b43397d (patch) | |
| tree | 67bdb2f335c02ed0b3e2c607f897259138c6129a /include/linux/gpio | |
| parent | dd61b29207ca4f346fbd9c06bc49f093e3369185 (diff) | |
| download | linux-990f6756bb64756d2d1033118cded6333b43397d.tar.xz | |
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 <brgl@bgdev.pl>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/gpio')
| -rw-r--r-- | include/linux/gpio/driver.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index a673a359e20b..b0728c8ad90c 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -289,6 +289,7 @@ struct gpio_irq_chip { * number or the name of the SoC IP-block implementing it. * @gpiodev: the internal state holder, opaque struct * @parent: optional parent device providing the GPIOs + * @fwnode: optional fwnode providing this controller's properties * @owner: helps prevent removal of modules exporting active GPIOs * @request: optional hook for chip-specific activation, such as * enabling module power and clock; may sleep @@ -377,6 +378,7 @@ struct gpio_chip { const char *label; struct gpio_device *gpiodev; struct device *parent; + struct fwnode_handle *fwnode; struct module *owner; int (*request)(struct gpio_chip *gc, |