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net: usb: ax88179_178a: restore state on resume

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The hardware state was only partially restored, which meant certain
functionality was broken on resume. Do a full HW reset on resume to
fix this.

Signed-off-by: Justin Chen <justinpopo6@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Justin Chen 2022-07-20 17:28:14 -07:00 committed by Jakub Kicinski
parent 843f92052d
commit c4bf747c68
1 changed files with 1 additions and 26 deletions
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27
drivers/net/usb/ax88179_178a.c
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@ -465,37 +465,12 @@ static int ax88179_auto_detach(struct usbnet *dev)
static int ax88179_resume(struct usb_interface *intf)
{
struct usbnet *dev = usb_get_intfdata(intf);
u16 tmp16;
u8 tmp8;
ax88179_set_pm_mode(dev, true);
usbnet_link_change(dev, 0, 0);
/* Power up ethernet PHY */
tmp16 = 0;
ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
2, 2, &tmp16);
udelay(1000);
tmp16 = AX_PHYPWR_RSTCTL_IPRL;
ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
2, 2, &tmp16);
msleep(200);
/* Ethernet PHY Auto Detach*/
ax88179_auto_detach(dev);
/* Enable clock */
ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8);
tmp8 |= AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS;
ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8);
msleep(100);
/* Configure RX control register => start operation */
tmp16 = AX_RX_CTL_DROPCRCERR | AX_RX_CTL_IPE | AX_RX_CTL_START |
AX_RX_CTL_AP | AX_RX_CTL_AMALL | AX_RX_CTL_AB;
ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16);
ax88179_reset(dev);
ax88179_set_pm_mode(dev, false);