From 1f3e1c682a0b5273e3ee8799b54319971f426e6a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Wed, 29 Jan 2014 18:06:52 +0100
Subject: [RFC V2][PATCH] MIPS: BCM47XX: Add new file for device specific workarounds

---
V2: Drop pr_debug for devices we don't need workarounds for. It was too
    load and not useful at all.
---
 arch/mips/bcm47xx/Makefile          |  2 +-
 arch/mips/bcm47xx/bcm47xx_private.h |  3 +++
 arch/mips/bcm47xx/setup.c           |  1 +
 arch/mips/bcm47xx/workarounds.c     | 25 +++++++++++++++++++++++++
 4 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 arch/mips/bcm47xx/workarounds.c

--- a/arch/mips/bcm47xx/Makefile
+++ b/arch/mips/bcm47xx/Makefile
@@ -4,4 +4,4 @@
 #
 
 obj-y				+= irq.o nvram.o prom.o serial.o setup.o time.o sprom.o
-obj-y				+= board.o buttons.o leds.o
+obj-y				+= board.o buttons.o leds.o workarounds.o
--- a/arch/mips/bcm47xx/bcm47xx_private.h
+++ b/arch/mips/bcm47xx/bcm47xx_private.h
@@ -9,4 +9,7 @@ int __init bcm47xx_buttons_register(void
 /* leds.c */
 void __init bcm47xx_leds_register(void);
 
+/* workarounds.c */
+void __init bcm47xx_workarounds(void);
+
 #endif
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -248,6 +248,7 @@ static int __init bcm47xx_register_bus_c
 
 	bcm47xx_buttons_register();
 	bcm47xx_leds_register();
+	bcm47xx_workarounds();
 
 	return 0;
 }
--- /dev/null
+++ b/arch/mips/bcm47xx/workarounds.c
@@ -0,0 +1,31 @@
+#include "bcm47xx_private.h"
+
+#include <linux/gpio.h>
+#include <bcm47xx_board.h>
+#include <bcm47xx.h>
+
+static void __init bcm47xx_workarounds_netgear_wnr3500l(void)
+{
+	const int usb_power = 12;
+	int err;
+
+	err = gpio_request_one(usb_power, GPIOF_OUT_INIT_HIGH, "usb_power");
+	if (err)
+		pr_err("Failed to request USB power gpio: %d\n", err);
+	else
+		gpio_free(usb_power);
+}
+
+void __init bcm47xx_workarounds(void)
+{
+	enum bcm47xx_board board = bcm47xx_board_get();
+
+	switch (board) {
+	case BCM47XX_BOARD_NETGEAR_WNR3500L:
+		bcm47xx_workarounds_netgear_wnr3500l();
+		break;
+	default:
+		/* No workaround(s) needed */
+		break;
+	}
+}
