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gpio: dwapb: Read GPIO base from gpio-base property

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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>
Tested-by: Serge Semin <fancer.lancer@gmail.com>
Acked-by: Serge Semin <fancer.lancer@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Andy Shevchenko 2021-08-04 19:00:17 +03:00
parent c1b291e96a
commit f973be8ad5
1 changed files with 4 additions and 0 deletions
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4
drivers/gpio/gpio-dwapb.c
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@ -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.