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| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2020-09-08 18:59:57 +0200 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2020-10-01 19:43:05 +0200 |
| commit | 740820519c69d84b320199a8a4348e47c447ebfb (patch) | |
| tree | d4ff670cf458486494cfe083bd5c69d8225d8d1d /drivers/usb/host | |
| parent | e3ea481bee1fbc8f090f46c38354838a64958af4 (diff) | |
| download | u-boot-740820519c69d84b320199a8a4348e47c447ebfb.tar.gz u-boot-740820519c69d84b320199a8a4348e47c447ebfb.tar.xz u-boot-740820519c69d84b320199a8a4348e47c447ebfb.zip | |
usb: xhci: add quirks flag to support MediaTek xHCI 0.96
There some vendor quirks for MTK xHCI 0.96 host controller:
1. It defines some extra SW scheduling parameters for HW
to minimize the scheduling effort for synchronous and
interrupt endpoints. The parameters are put into reserved
DWs of slot context and endpoint context.
2. Its TDS in Normal TRB defines a number of packets that
remains to be transferred for a TD after processing all
Max packets in all previous TRBs.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/xhci-mtk.c | 1 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 9 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.c | 2 |
3 files changed, 9 insertions, 3 deletions
diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index 8ff71854fc..f3f181dae0 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -258,6 +258,7 @@ static int xhci_mtk_probe(struct udevice *dev) if (ret) goto ssusb_init_err; + mtk->ctrl.quirks = XHCI_MTK_HOST; hcor = (struct xhci_hcor *)((uintptr_t)mtk->hcd + HC_LENGTH(xhci_readl(&mtk->hcd->cr_capbase))); diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 603e0e5b76..3f915ae115 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -332,7 +332,8 @@ static u32 xhci_td_remainder(struct xhci_ctrl *ctrl, int transferred, { u32 total_packet_count; - if (ctrl->hci_version < 0x100) + /* MTK xHCI 0.96 contains some features from 1.0 */ + if (ctrl->hci_version < 0x100 && !(ctrl->quirks & XHCI_MTK_HOST)) return ((td_total_len - transferred) >> 10); /* One TRB with a zero-length data packet. */ @@ -340,6 +341,10 @@ static u32 xhci_td_remainder(struct xhci_ctrl *ctrl, int transferred, trb_buff_len == td_total_len) return 0; + /* for MTK xHCI 0.96, TD size include this TRB, but not in 1.x */ + if ((ctrl->quirks & XHCI_MTK_HOST) && (ctrl->hci_version < 0x100)) + trb_buff_len = 0; + total_packet_count = DIV_ROUND_UP(td_total_len, maxp); /* Queueing functions don't count the current TRB into transferred */ @@ -823,7 +828,7 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe, field |= 0x1; /* xHCI 1.0 6.4.1.2.1: Transfer Type field */ - if (ctrl->hci_version >= 0x100) { + if (ctrl->hci_version >= 0x100 || ctrl->quirks & XHCI_MTK_HOST) { if (length > 0) { if (req->requesttype & USB_DIR_IN) field |= (TRB_DATA_IN << TRB_TX_TYPE_SHIFT); diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 4be1411243..51edeb22c1 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -650,7 +650,7 @@ static int xhci_set_configuration(struct usb_device *udev) * are put into reserved DWs in Slot and Endpoint Contexts * for synchronous endpoints. */ - if (IS_ENABLED(CONFIG_USB_XHCI_MTK)) { + if (ctrl->quirks & XHCI_MTK_HOST) { ep_ctx[ep_index]->reserved[0] = cpu_to_le32(EP_BPKTS(1) | EP_BBM(1)); } |