146 lines
5.4 KiB
Diff
146 lines
5.4 KiB
Diff
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diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
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index 841daec70..48825b870 100644
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--- a/drivers/usb/dwc3/core.c
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+++ b/drivers/usb/dwc3/core.c
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@@ -1340,6 +1340,8 @@ static void dwc3_get_properties(struct dwc3 *dwc)
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"snps,dis-del-phy-power-chg-quirk");
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dwc->dis_tx_ipgap_linecheck_quirk = device_property_read_bool(dev,
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"snps,dis-tx-ipgap-linecheck-quirk");
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+ dwc->xhci_trb_ent_quirk = device_property_read_bool(dev,
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+ "snps,xhci-trb-ent-quirk");
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dwc->resume_hs_terminations = device_property_read_bool(dev,
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"snps,resume-hs-terminations");
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diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
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index 1b241f937..e1ded14fd 100644
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--- a/drivers/usb/dwc3/core.h
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+++ b/drivers/usb/dwc3/core.h
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@@ -1049,6 +1049,9 @@ struct dwc3_scratchpad_array {
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* change quirk.
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* @dis_tx_ipgap_linecheck_quirk: set if we disable u2mac linestate
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* check during HS transmit.
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+ * @xhci_trb_ent_quirk: set if need to enable the Evaluate Next TRB(ENT)
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+ * flag in the TRB data structure to force xHC to
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+ * pre-fetch the next TRB of a TD.
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* @resume-hs-terminations: Set if we enable quirk for fixing improper crc
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* generation after resume from suspend.
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* @parkmode_disable_ss_quirk: set if we need to disable all SuperSpeed
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@@ -1245,6 +1248,7 @@ struct dwc3 {
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unsigned dis_tx_ipgap_linecheck_quirk:1;
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unsigned resume_hs_terminations:1;
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+ unsigned xhci_trb_ent_quirk:1;
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unsigned parkmode_disable_ss_quirk:1;
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unsigned gfladj_refclk_lpm_sel:1;
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unsigned tx_de_emphasis_quirk:1;
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diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
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index e19517658..19d48703d 100644
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--- a/drivers/usb/dwc3/host.c
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+++ b/drivers/usb/dwc3/host.c
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@@ -44,7 +44,7 @@ static int dwc3_host_get_irq(struct dwc3 *dwc)
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int dwc3_host_init(struct dwc3 *dwc)
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{
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- struct property_entry props[4];
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+ struct property_entry props[5];
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struct platform_device *xhci;
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int ret, irq;
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struct resource *res;
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@@ -92,6 +92,9 @@ int dwc3_host_init(struct dwc3 *dwc)
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if (dwc->usb3_lpm_capable)
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props[prop_idx++] = PROPERTY_ENTRY_BOOL("usb3-lpm-capable");
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+ if (dwc->xhci_trb_ent_quirk)
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+ props[prop_idx++] = PROPERTY_ENTRY_BOOL("xhci-trb-ent-quirk");
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+
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if (dwc->usb2_lpm_disable)
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props[prop_idx++] = PROPERTY_ENTRY_BOOL("usb2-lpm-disable");
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diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
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index 4d34f6005..6972cb5b2 100644
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--- a/drivers/usb/host/xhci-plat.c
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+++ b/drivers/usb/host/xhci-plat.c
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@@ -312,6 +312,9 @@ static int xhci_plat_probe(struct platform_device *pdev)
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if (device_property_read_bool(tmpdev, "quirk-broken-port-ped"))
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xhci->quirks |= XHCI_BROKEN_PORT_PED;
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+ if (device_property_read_bool(tmpdev, "xhci-trb-ent-quirk"))
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+ xhci->quirks |= XHCI_TRB_ENT_QUIRK;
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+
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device_property_read_u32(tmpdev, "imod-interval-ns",
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&xhci->imod_interval);
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}
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diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
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index 167dae117..b1bc3bd03 100644
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--- a/drivers/usb/host/xhci-ring.c
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+++ b/drivers/usb/host/xhci-ring.c
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@@ -3312,6 +3312,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
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bool more_trbs_coming = true;
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bool need_zero_pkt = false;
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bool first_trb = true;
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+ bool en_trb_ent = true;
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unsigned int num_trbs;
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unsigned int start_cycle, num_sgs = 0;
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unsigned int enqd_len, block_len, trb_buff_len, full_len;
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@@ -3348,6 +3349,13 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
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if (urb->transfer_flags & URB_ZERO_PACKET && urb_priv->num_tds > 1)
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need_zero_pkt = true;
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+ /*
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+ * Don't enable the ENT flag in the TRB if
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+ * the EP support bulk streaming protocol.
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+ */
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+ if (urb->stream_id)
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+ en_trb_ent = false;
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+
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td = &urb_priv->td[0];
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/*
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@@ -3376,6 +3384,13 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
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first_trb = false;
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if (start_cycle == 0)
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field |= TRB_CYCLE;
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+ /*
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+ * Don't enable the ENT flag in the TRB if the
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+ * transfer length of the first TRB isn't an
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+ * integer multiple of the EP maxpacket.
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+ */
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+ if (trb_buff_len % usb_endpoint_maxp(&urb->ep->desc))
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+ en_trb_ent = false;
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} else
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field |= ring->cycle_state;
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@@ -3384,6 +3399,8 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
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*/
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if (enqd_len + trb_buff_len < full_len) {
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field |= TRB_CHAIN;
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+ if (xhci->quirks & XHCI_TRB_ENT_QUIRK && en_trb_ent)
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+ field |= TRB_ENT;
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if (trb_is_link(ring->enqueue + 1)) {
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if (xhci_align_td(xhci, urb, enqd_len,
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&trb_buff_len,
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diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
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index d01241f1d..357217751 100644
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--- a/drivers/usb/host/xhci.h
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+++ b/drivers/usb/host/xhci.h
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@@ -1512,7 +1512,11 @@ static inline const char *xhci_trb_type_string(u8 type)
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#define TRB_SEGMENT_SIZE (TRBS_PER_SEGMENT*16)
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#define TRB_SEGMENT_SHIFT (ilog2(TRB_SEGMENT_SIZE))
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/* TRB buffer pointers can't cross 64KB boundaries */
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+#ifdef CONFIG_ARCH_ROCKCHIP
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+#define TRB_MAX_BUFF_SHIFT 12
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+#else
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#define TRB_MAX_BUFF_SHIFT 16
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+#endif
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#define TRB_MAX_BUFF_SIZE (1 << TRB_MAX_BUFF_SHIFT)
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/* How much data is left before the 64KB boundary? */
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#define TRB_BUFF_LEN_UP_TO_BOUNDARY(addr) (TRB_MAX_BUFF_SIZE - \
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@@ -1828,6 +1832,7 @@ struct xhci_hcd {
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#define XHCI_STATE_HALTED (1 << 1)
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#define XHCI_STATE_REMOVING (1 << 2)
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unsigned long long quirks;
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+#define XHCI_TRB_ENT_QUIRK BIT_ULL(63)
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#define XHCI_LINK_TRB_QUIRK BIT_ULL(0)
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#define XHCI_RESET_EP_QUIRK BIT_ULL(1)
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#define XHCI_NEC_HOST BIT_ULL(2)
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