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| author | Vardan Mikayelyan <mvardan@synopsys.com> | 2016-11-14 19:17:03 -0800 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2016-11-18 13:54:50 +0200 |
| commit | 38e9002b85672352f8693c82192c8029586dd86d (patch) | |
| tree | 115f261b377c5a6aaadeac62167df603d1cb7f0f /drivers/usb/dwc2/gadget.c | |
| parent | 552d940f0bea0c010615b45ed7c64e7b3b103e6a (diff) | |
| download | linux-stable-38e9002b85672352f8693c82192c8029586dd86d.tar.gz linux-stable-38e9002b85672352f8693c82192c8029586dd86d.tar.bz2 linux-stable-38e9002b85672352f8693c82192c8029586dd86d.zip | |
usb: dwc2: gadget: Add new core parameter for low speed
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>
Diffstat (limited to 'drivers/usb/dwc2/gadget.c')
| -rw-r--r-- | drivers/usb/dwc2/gadget.c | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index e67283237fd4..ad0cd0e38f06 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -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; } |