Commit 7aae9990 authored by Chunfeng Yun's avatar Chunfeng Yun Committed by Greg Kroah-Hartman
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usb: xhci-mtk: use maximum ESIT payload of endpiont context 



Make use of maximum ESIT payload of endpoint context to calculate
the number of packets to send in each ESIT

Signed-off-by: default avatarChunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: default avatarMathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a0ef2bdf

drivers/usb/host/xhci-mtk-sch.c

+14 −1
Original line number Diff line number Diff line
@@ -73,12 +73,17 @@ static void setup_sch_info(struct usb_device *udev, 
	u32 max_burst;

	u32 mult;

	u32 esit_pkts;

	u32 max_esit_payload;



	ep_type = CTX_TO_EP_TYPE(le32_to_cpu(ep_ctx->ep_info2));

	ep_interval = CTX_TO_EP_INTERVAL(le32_to_cpu(ep_ctx->ep_info));

	max_packet_size = MAX_PACKET_DECODED(le32_to_cpu(ep_ctx->ep_info2));

	max_burst = CTX_TO_MAX_BURST(le32_to_cpu(ep_ctx->ep_info2));

	mult = CTX_TO_EP_MULT(le32_to_cpu(ep_ctx->ep_info));

	max_esit_payload =

		(CTX_TO_MAX_ESIT_PAYLOAD_HI(

			le32_to_cpu(ep_ctx->ep_info)) << 16) |

		 CTX_TO_MAX_ESIT_PAYLOAD(le32_to_cpu(ep_ctx->tx_info));



	sch_ep->esit = 1 << ep_interval;

	sch_ep->offset = 0;
@@ -105,7 +110,15 @@ static void setup_sch_info(struct usb_device *udev, 
	} else if (udev->speed == USB_SPEED_SUPER) {

		/* usb3_r1 spec section4.4.7 & 4.4.8 */

		sch_ep->cs_count = 0;

		/*

		 * some device's (d)wBytesPerInterval is set as 0,

		 * then max_esit_payload is 0, so evaluate esit_pkts from

		 * mult and burst

		 */

		esit_pkts = DIV_ROUND_UP(max_esit_payload, max_packet_size);

		if (esit_pkts == 0)

			esit_pkts = (mult + 1) * (max_burst + 1);



		if (ep_type == INT_IN_EP || ep_type == INT_OUT_EP) {

			sch_ep->pkts = esit_pkts;

			sch_ep->num_budget_microframes = 1;

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