Commit c4bf747c authored by Justin Chen's avatar Justin Chen Committed by Jakub Kicinski
Browse files

net: usb: ax88179_178a: restore state on resume 



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: default avatarJustin Chen <justinpopo6@gmail.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 843f9205

drivers/net/usb/ax88179_178a.c

+1 −26
Original line number Diff line number Diff line
@@ -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);