target/linux/brcm63xx/patches-3.18/379-gpio-gpio-bcm63xx-use-alias-id-for-base-calculation.patch

   1 From 6759a62f28bb1995afe6562c0adfbbb6e8540933 Mon Sep 17 00:00:00 2001
   2 From: Jonas Gorski <jogo@openwrt.org>
   3 Date: Sun, 22 Feb 2015 12:57:58 +0100
   4 Subject: [PATCH 6/6] gpio: gpio-bcm63xx: use alias id for base calculation
   5
   6 Signed-off-by: Jonas Gorski <jogo@openwrt.org>
   7 ---
   8  drivers/gpio/gpio-bcm63xx.c |    6 ++++++
   9  1 file changed, 6 insertions(+)
  10
  11 --- a/drivers/gpio/gpio-bcm63xx.c
  12 +++ b/drivers/gpio/gpio-bcm63xx.c
  13 @@ -32,6 +32,8 @@
  14  #include <linux/of.h>
  15  #include <linux/of_gpio.h>
  16
  17 +#define BCM63XX_GPIOS_PER_BANK 32
  18 +
  19  static int bcm63xx_gpio_probe(struct platform_device *pdev)
  20  {
  21         struct device *dev = &pdev->dev;
  22 @@ -73,8 +75,12 @@ static int bcm63xx_gpio_probe(struct pla
  23         platform_set_drvdata(pdev, bgc);
  24
  25         if (dev->of_node) {
  26 +               int id = of_alias_get_id(dev->of_node, "gpio");
  27                 u32 ngpios;
  28
  29 +               if (id >= 0)
  30 +                       bgc->gc.base = id * BCM63XX_GPIOS_PER_BANK;
  31 +
  32                 if (!of_property_read_u32(dev->of_node, "ngpios", &ngpios))
  33                         bgc->gc.ngpio = ngpios;
  34