renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-26 06:04:14 +08:00
Code

usb: dwc2: Add support of dedicated full-speed PHY interface

Browse Source 
Do modifications in dwc2_hsotg_core_init_disconnected() function to
enable USB 1.1 Full-Speed Serial Transceiver Select in GUSBCFG register
if corresponding speed and PHY types are chosen. Adjust device speed
selection in DCFG register as well.

Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Vahram Aharonyan 2016-11-14 19:16:55 -08:00 committed by Felipe Balbi
parent a4f8277145
commit 79c3b5bb89
1 changed files with 21 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/usb/dwc2/gadget.c
View File

@ -3153,6 +3153,7 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg,
u32 intmsk;
u32 val;
u32 usbcfg;
u32 dcfg = 0;
/* Kill any ep0 requests as controller will be reinitialized */
kill_all_requests(hsotg, hsotg->eps_out[0], -ECONNRESET);
@ -3171,10 +3172,16 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg,
usbcfg &= ~(GUSBCFG_TOUTCAL_MASK | GUSBCFG_PHYIF16 | GUSBCFG_SRPCAP |
GUSBCFG_HNPCAP);
/* set the PLL on, remove the HNP/SRP and set the PHY */
val = (hsotg->phyif == GUSBCFG_PHYIF8) ? 9 : 5;
usbcfg |= hsotg->phyif | GUSBCFG_TOUTCAL(7) |
(val << GUSBCFG_USBTRDTIM_SHIFT);
if (hsotg->params.phy_type == DWC2_PHY_TYPE_PARAM_FS &&
hsotg->params.speed == DWC2_SPEED_PARAM_FULL) {
/* FS/LS Dedicated Transceiver Interface */
usbcfg |= GUSBCFG_PHYSEL;
} else {
/* set the PLL on, remove the HNP/SRP and set the PHY */
val = (hsotg->phyif == GUSBCFG_PHYIF8) ? 9 : 5;
usbcfg |= hsotg->phyif | GUSBCFG_TOUTCAL(7) |
(val << GUSBCFG_USBTRDTIM_SHIFT);
}
dwc2_writel(usbcfg, hsotg->regs + GUSBCFG);
dwc2_hsotg_init_fifo(hsotg);
@ -3182,7 +3189,16 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg,
if (!is_usb_reset)
__orr32(hsotg->regs + DCTL, DCTL_SFTDISCON);
dwc2_writel(DCFG_EPMISCNT(1) | DCFG_DEVSPD_HS, hsotg->regs + DCFG);
dcfg |= DCFG_EPMISCNT(1);
if (hsotg->params.speed == DWC2_SPEED_PARAM_FULL) {
if (hsotg->params.phy_type == DWC2_PHY_TYPE_PARAM_FS)
dcfg |= DCFG_DEVSPD_FS48;
else
dcfg |= DCFG_DEVSPD_FS;
} else {
dcfg |= DCFG_DEVSPD_HS;
}
dwc2_writel(dcfg, hsotg->regs + DCFG);
/* Clear any pending OTG interrupts */
dwc2_writel(0xffffffff, hsotg->regs + GOTGINT);