openwrtv4/target/linux/brcm63xx/patches-3.14/376-net-bcm63xx_enet-use-named-gpio-for-ephy-reset-gpio.patch
Jonas Gorski eea227c60d brcm63xx: probe gpio controllers through DT
Add a generic mmio gpio controller based driver and probe it
through device tree.

Use aliases for base calculation until we converted all users to
device tree or named gpios.

Convert bcm63xx_enet's ephy-reset gpio to use a named gpio.

While at it, remove the duplicate reset gpio defintion for livebox.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 44565
2015-02-27 17:39:49 +00:00

49 lines
1.4 KiB
Diff

From ec905f2ea78ec40602a685ede31c5e4f9893d196 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Sat, 21 Feb 2015 16:35:07 +0100
Subject: [PATCH 3/6] net: bcm63xx_enet: use named gpio for ephy reset gpio
Allow using a named optional gpio for ephy reset gpio registration.
---
drivers/net/ethernet/broadcom/bcm63xx_enet.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -30,6 +30,7 @@
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/if_vlan.h>
+#include <linux/gpio/consumer.h>
#include <bcm63xx_dev_enet.h>
#include "bcm63xx_enet.h"
@@ -2852,10 +2853,18 @@ static int bcm_enet_shared_probe(struct
{
struct resource *res;
void __iomem *p[3];
+ struct gpio_desc *ephy_reset;
unsigned int i;
memset(bcm_enet_shared_base, 0, sizeof(bcm_enet_shared_base));
+ ephy_reset = devm_gpiod_get(&pdev->dev, "ephy-reset");
+ if (IS_ERR(ephy_reset)) {
+ if (PTR_ERR(ephy_reset) != -ENOENT)
+ return PTR_ERR(ephy_reset);
+ ephy_reset = NULL;
+ }
+
for (i = 0; i < 3; i++) {
res = platform_get_resource(pdev, IORESOURCE_MEM, i);
p[i] = devm_ioremap_resource(&pdev->dev, res);
@@ -2865,6 +2874,9 @@ static int bcm_enet_shared_probe(struct
memcpy(bcm_enet_shared_base, p, sizeof(bcm_enet_shared_base));
+ if (ephy_reset)
+ gpiod_direction_output(ephy_reset, 0);
+
return 0;
}