target/linux/brcm63xx/patches-3.14/376-net-bcm63xx_enet-use-named-gpio-for-ephy-reset-gpio.patch

   1 From ec905f2ea78ec40602a685ede31c5e4f9893d196 Mon Sep 17 00:00:00 2001
   2 From: Jonas Gorski <jogo@openwrt.org>
   3 Date: Sat, 21 Feb 2015 16:35:07 +0100
   4 Subject: [PATCH 3/6] net: bcm63xx_enet: use named gpio for ephy reset gpio
   5
   6 Allow using a named optional gpio for ephy reset gpio registration.
   7 ---
   8  drivers/net/ethernet/broadcom/bcm63xx_enet.c |    12 ++++++++++++
   9  1 file changed, 12 insertions(+)
  10
  11 --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
  12 +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
  13 @@ -30,6 +30,7 @@
  14  #include <linux/dma-mapping.h>
  15  #include <linux/platform_device.h>
  16  #include <linux/if_vlan.h>
  17 +#include <linux/gpio/consumer.h>
  18
  19  #include <bcm63xx_dev_enet.h>
  20  #include "bcm63xx_enet.h"
  21 @@ -2852,10 +2853,18 @@ static int bcm_enet_shared_probe(struct
  22  {
  23         struct resource *res;
  24         void __iomem *p[3];
  25 +       struct gpio_desc *ephy_reset;
  26         unsigned int i;
  27
  28         memset(bcm_enet_shared_base, 0, sizeof(bcm_enet_shared_base));
  29
  30 +       ephy_reset = devm_gpiod_get(&pdev->dev, "ephy-reset");
  31 +       if (IS_ERR(ephy_reset)) {
  32 +               if (PTR_ERR(ephy_reset) != -ENOENT)
  33 +                       return PTR_ERR(ephy_reset);
  34 +               ephy_reset = NULL;
  35 +       }
  36 +
  37         for (i = 0; i < 3; i++) {
  38                 res = platform_get_resource(pdev, IORESOURCE_MEM, i);
  39                 p[i] = devm_ioremap_resource(&pdev->dev, res);
  40 @@ -2865,6 +2874,9 @@ static int bcm_enet_shared_probe(struct
  41
  42         memcpy(bcm_enet_shared_base, p, sizeof(bcm_enet_shared_base));
  43
  44 +       if (ephy_reset)
  45 +               gpiod_direction_output(ephy_reset, 0);
  46 +
  47         return 0;
  48  }
  49