linux/arch/mips/bcm47xx/workarounds.c
Petr Štetiar cdb8faa00e
mips: bcm47xx: Enable USB power on Netgear WNDR3400v2
Eric has reported on OpenWrt's bug tracking system[1], that he's not
able to use USB devices on his WNDR3400v2 device after the boot, until
he turns on GPIO #21 manually through sysfs.

1. https://bugs.openwrt.org/index.php?do=details&task_id=2170

Cc: Rafał Miłecki <zajec5@gmail.com>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Reported-by: Eric Bohlman <ericbohlman@gmail.com>
Tested-by: Eric Bohlman <ericbohlman@gmail.com>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Signed-off-by: Paul Burton <paul.burton@mips.com>
2019-03-11 15:34:17 -07:00

36 lines
782 B
C

// SPDX-License-Identifier: GPL-2.0
#include "bcm47xx_private.h"
#include <linux/gpio.h>
#include <bcm47xx_board.h>
#include <bcm47xx.h>
static void __init bcm47xx_workarounds_enable_usb_power(int usb_power)
{
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_enable_usb_power(12);
break;
case BCM47XX_BOARD_NETGEAR_WNDR3400V2:
case BCM47XX_BOARD_NETGEAR_WNDR3400_V3:
bcm47xx_workarounds_enable_usb_power(21);
break;
default:
/* No workaround(s) needed */
break;
}
}