[PATCH v2 2/4] gpio: dwapb: Read GPIO base from gpio-base property
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: 2021-08-04 16:15:58
Also in:
lkml
Subsystem:
gpio subsystem, synopsys designware apb gpio driver, the rest · Maintainers:
Linus Walleij, Bartosz Golaszewski, Hoan Tran, Linus Torvalds
For backward compatibility with some legacy devices introduce a new (*) property gpio-base to read GPIO base. This will allow further cleaning up of the driver. *) Note, it's not new for the GPIO library since the mockup driver is using it already. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- v2: added check to ensure that the property won't be used by FW (Serge) drivers/gpio/gpio-dwapb.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 4c7153cb646c..674e91e69cc5 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c@@ -584,6 +584,10 @@ static struct dwapb_platform_data *dwapb_gpio_get_pdata(struct device *dev) pp->gpio_base = -1; + /* For internal use only, new platforms mustn't exercise this */ + if (is_software_node(fwnode)) + fwnode_property_read_u32(fwnode, "gpio-base", &pp->gpio_base); + /* * Only port A can provide interrupts in all configurations of * the IP.
--
2.30.2