Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752975AbbKQAwm (ORCPT ); Mon, 16 Nov 2015 19:52:42 -0500 Received: from mail-pa0-f51.google.com ([209.85.220.51]:34094 "EHLO mail-pa0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752878AbbKQAvr (ORCPT ); Mon, 16 Nov 2015 19:51:47 -0500 From: Douglas Anderson To: John Youn , balbi@ti.com Cc: Yunzhi Li , =?UTF-8?q?Heiko=20St=C3=BCbner?= , linux-rockchip@lists.infradead.org, Julius Werner , gregory.herrero@intel.com, yousaf.kaukab@intel.com, dinguyen@opensource.altera.com, stern@rowland.harvard.edu, ming.lei@canonical.com, Douglas Anderson , johnyoun@synopsys.com, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 5/8] usb: dwc2: host: Keep track of and use our scheduled microframe Date: Mon, 16 Nov 2015 16:51:21 -0800 Message-Id: <1447721484-22548-6-git-send-email-dianders@chromium.org> X-Mailer: git-send-email 2.6.0.rc2.230.g3dd15c0 In-Reply-To: <1447721484-22548-1-git-send-email-dianders@chromium.org> References: <1447721484-22548-1-git-send-email-dianders@chromium.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3060 Lines: 81 The microframe scheduler did a lot of work to pick the proper microframe. Then dwc2_sched_periodic_split() went ahead and ignored which microframe we picked if it ever needed to re-assign things. Let's keep track of the uframe and then we'll always use it. Signed-off-by: Douglas Anderson --- Changes in v3: - Keep track and use our uframe new for v3. Changes in v2: None drivers/usb/dwc2/hcd.h | 4 ++++ drivers/usb/dwc2/hcd_queue.c | 16 +++++++++++++--- 2 files changed, 17 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc2/hcd.h b/drivers/usb/dwc2/hcd.h index a3dbc561fe3f..ff99cb44c89d 100644 --- a/drivers/usb/dwc2/hcd.h +++ b/drivers/usb/dwc2/hcd.h @@ -231,6 +231,9 @@ enum dwc2_transaction_type { * @do_split: Full/low speed endpoint on high-speed hub requires split * @td_first: Index of first activated isochronous transfer descriptor * @td_last: Index of last activated isochronous transfer descriptor + * @sched_uframe: The microframe that we're scheduled to be in (0 - 7). + * Whenever we start a new split this is expected to be the + * lower 3 bits of sched_frame. * @usecs: Bandwidth in microseconds per (micro)frame * @interval: Interval between transfers in (micro)frames * @sched_frame: (Micro)frame to initialize a periodic transfer. @@ -263,6 +266,7 @@ struct dwc2_qh { u8 do_split; u8 td_first; u8 td_last; + u8 sched_uframe; u16 usecs; u16 interval; u16 sched_frame; diff --git a/drivers/usb/dwc2/hcd_queue.c b/drivers/usb/dwc2/hcd_queue.c index 64b779a5c93f..4c1d9cf482d0 100644 --- a/drivers/usb/dwc2/hcd_queue.c +++ b/drivers/usb/dwc2/hcd_queue.c @@ -464,8 +464,10 @@ static int dwc2_schedule_periodic(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh) /* Set the new frame up */ if (frame >= 0) { - qh->sched_frame &= ~0x7; - qh->sched_frame |= (frame & 7); + qh->sched_uframe = frame; + + /* The next frame that matches our scheduled uframe */ + qh->sched_frame = ((qh->sched_frame + 7) & ~7) | frame; dwc2_sch_dbg(hsotg, "sched_p %p sch=%04x, uf=%d, us=%d\n", qh, qh->sched_frame, frame, @@ -668,7 +670,15 @@ static void dwc2_sched_periodic_split(struct dwc2_hsotg *hsotg, qh->interval); if (dwc2_frame_num_le(qh->sched_frame, frame_number)) qh->sched_frame = frame_number; - qh->sched_frame |= 0x7; + + if (hsotg->core_params->uframe_sched > 0) + /* The next frame that matches our scheduled uframe */ + qh->sched_frame = ((qh->sched_frame + 7) & ~7) | + qh->sched_uframe; + else + /* The beginning of the next full frame */ + qh->sched_frame |= 0x7; + qh->start_split_frame = qh->sched_frame; } -- 2.6.0.rc2.230.g3dd15c0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/