xiaomi-sm8450/android_kernel_xiaomi_sm8450
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usb: dwc2: gadget: Add new core parameter for low speed

Bläddra i källkod 
Added new core param for low speed, which can be used only when SNPSID
is equal to DWC2_CORE_FS_IOT. When LS mode is enabled, we are
restricting ep types and providing to upper layer only INTR and CTRL
endpoints.

Signed-off-by: Vardan Mikayelyan <mvardan@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:
Vardan Mikayelyan
2016-11-14 19:17:03 -08:00
committad av Felipe Balbi
förälder 552d940f0b
incheckning 38e9002b85
4 ändrade filer med 33 tillägg och 11 borttagningar
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27
drivers/usb/dwc2/gadget.c
Visa fil

@@ -3175,7 +3175,8 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg,
GUSBCFG_HNPCAP);
if (hsotg->params.phy_type == DWC2_PHY_TYPE_PARAM_FS &&
hsotg->params.speed == DWC2_SPEED_PARAM_FULL) {
(hsotg->params.speed == DWC2_SPEED_PARAM_FULL ||
hsotg->params.speed == DWC2_SPEED_PARAM_LOW)) {
/* FS/LS Dedicated Transceiver Interface */
usbcfg |= GUSBCFG_PHYSEL;
} else {
@@ -3192,14 +3193,21 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg,
__orr32(hsotg->regs + DCTL, DCTL_SFTDISCON);
dcfg |= DCFG_EPMISCNT(1);
if (hsotg->params.speed == DWC2_SPEED_PARAM_FULL) {
switch (hsotg->params.speed) {
case DWC2_SPEED_PARAM_LOW:
dcfg |= DCFG_DEVSPD_LS;
break;
case DWC2_SPEED_PARAM_FULL:
if (hsotg->params.phy_type == DWC2_PHY_TYPE_PARAM_FS)
dcfg |= DCFG_DEVSPD_FS48;
else
dcfg |= DCFG_DEVSPD_FS;
} else {
break;
default:
dcfg |= DCFG_DEVSPD_HS;
}
dwc2_writel(dcfg, hsotg->regs + DCFG);
/* Clear any pending OTG interrupts */
@@ -4388,14 +4396,21 @@ static void dwc2_hsotg_initep(struct dwc2_hsotg *hsotg,
hs_ep->parent = hsotg;
hs_ep->ep.name = hs_ep->name;
usb_ep_set_maxpacket_limit(&hs_ep->ep, epnum ? 1024 : EP0_MPS_LIMIT);
if (hsotg->params.speed == DWC2_SPEED_PARAM_LOW)
usb_ep_set_maxpacket_limit(&hs_ep->ep, 8);
else
usb_ep_set_maxpacket_limit(&hs_ep->ep,
epnum ? 1024 : EP0_MPS_LIMIT);
hs_ep->ep.ops = &dwc2_hsotg_ep_ops;
if (epnum == 0) {
hs_ep->ep.caps.type_control = true;
} else {
hs_ep->ep.caps.type_iso = true;
hs_ep->ep.caps.type_bulk = true;
if (hsotg->params.speed != DWC2_SPEED_PARAM_LOW) {
hs_ep->ep.caps.type_iso = true;
hs_ep->ep.caps.type_bulk = true;
}
hs_ep->ep.caps.type_int = true;
}