diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0149-dwc_otg-fiq_fsm-Make-high-speed-isochronous-strided-.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.1/0149-dwc_otg-fiq_fsm-Make-high-speed-isochronous-strided-.patch | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0149-dwc_otg-fiq_fsm-Make-high-speed-isochronous-strided-.patch b/target/linux/brcm2708/patches-4.1/0149-dwc_otg-fiq_fsm-Make-high-speed-isochronous-strided-.patch deleted file mode 100644 index cf21697bd0..0000000000 --- a/target/linux/brcm2708/patches-4.1/0149-dwc_otg-fiq_fsm-Make-high-speed-isochronous-strided-.patch +++ /dev/null @@ -1,134 +0,0 @@ -From 52db5f085001b191fb6ccdb8138ba947ba48ba73 Mon Sep 17 00:00:00 2001 -From: P33M <P33M@github.com> -Date: Tue, 4 Aug 2015 01:15:20 +0100 -Subject: [PATCH 149/222] dwc_otg: fiq_fsm: Make high-speed isochronous strided - transfers work properly - -Certain low-bandwidth high-speed USB devices (specialist audio devices, -compressed-frame webcams) have packet intervals > 1 microframe. - -Stride these transfers in the FIQ by using the start-of-frame interrupt -to restart the channel at the right time. ---- - drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c | 17 +++++++++++++---- - drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h | 5 ++++- - drivers/usb/host/dwc_otg/dwc_otg_hcd.c | 7 ++++++- - drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c | 6 ++++-- - 4 files changed, 27 insertions(+), 8 deletions(-) - ---- a/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c -+++ b/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c -@@ -615,8 +615,11 @@ static int notrace noinline fiq_fsm_do_s - break; - - case FIQ_HS_ISOC_SLEEPING: -- state->channel[n].fsm = FIQ_HS_ISOC_TURBO; -- fiq_fsm_restart_channel(state, n, 0); -+ /* Is it time to wake this channel yet? */ -+ if (--state->channel[n].uframe_sleeps == 0) { -+ state->channel[n].fsm = FIQ_HS_ISOC_TURBO; -+ fiq_fsm_restart_channel(state, n, 0); -+ } - break; - - case FIQ_PER_SSPLIT_QUEUED: -@@ -624,7 +627,7 @@ static int notrace noinline fiq_fsm_do_s - break; - if(!fiq_fsm_tt_in_use(state, num_channels, n)) { - if (!fiq_fsm_too_late(state, n)) { -- fiq_print(FIQDBG_INT, st, "SOF GO %01d", n); -+ fiq_print(FIQDBG_INT, state, "SOF GO %01d", n); - fiq_fsm_restart_channel(state, n, 0); - state->channel[n].fsm = FIQ_PER_SSPLIT_STARTED; - } else { -@@ -1069,8 +1072,14 @@ static int notrace noinline fiq_fsm_do_h - if (fiq_fsm_update_hs_isoc(state, n, hcint)) { - /* more transactions to come */ - handled = 1; -- restart = 1; - fiq_print(FIQDBG_INT, state, "HSISO M "); -+ /* For strided transfers, put ourselves to sleep */ -+ if (st->hs_isoc_info.stride > 1) { -+ st->uframe_sleeps = st->hs_isoc_info.stride - 1; -+ st->fsm = FIQ_HS_ISOC_SLEEPING; -+ } else { -+ restart = 1; -+ } - } else { - st->fsm = FIQ_HS_ISOC_DONE; - fiq_print(FIQDBG_INT, state, "HSISO F "); ---- a/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h -+++ b/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h -@@ -260,12 +260,13 @@ struct fiq_dma_blob { - * @iso_frame: Pointer to the array of OTG URB iso_frame_descs. - * @nrframes: Total length of iso_frame_desc array - * @index: Current index (FIQ-maintained) -- * -+ * @stride: Interval in uframes between HS isoc transactions - */ - struct fiq_hs_isoc_info { - struct dwc_otg_hcd_iso_packet_desc *iso_desc; - unsigned int nrframes; - unsigned int index; -+ unsigned int stride; - }; - - /** -@@ -296,6 +297,8 @@ struct fiq_channel_state { - /* Hardware bug workaround: sometimes channel halt interrupts are - * delayed until the next SOF. Keep track of when we expected to get interrupted. */ - unsigned int expected_uframe; -+ /* number of uframes remaining (for interval > 1 HS isoc transfers) before next transfer */ -+ unsigned int uframe_sleeps; - /* in/out for communicating number of dma buffers used, or number of ISOC to do */ - unsigned int nrpackets; - struct fiq_dma_info dma_info; ---- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c -+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c -@@ -1678,6 +1678,9 @@ int fiq_fsm_queue_isoc_transaction(dwc_o - } - } - -+ st->hs_isoc_info.stride = qh->interval; -+ st->uframe_sleeps = 0; -+ - fiq_print(FIQDBG_INT, hcd->fiq_state, "FSMQ %01d ", hc->hc_num); - fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hcchar_copy.d32); - fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hctsiz_copy.d32); -@@ -1692,9 +1695,11 @@ int fiq_fsm_queue_isoc_transaction(dwc_o - DWC_WRITE_REG32(&hc_regs->hcintmsk, st->hcintmsk_copy.d32); - if (hfnum.b.frrem < PERIODIC_FRREM_BACKOFF) { - /* Prevent queueing near EOF1. Bad things happen if a periodic -- * split transaction is queued very close to EOF. -+ * split transaction is queued very close to EOF. SOF interrupt handler -+ * will wake this channel at the next interrupt. - */ - st->fsm = FIQ_HS_ISOC_SLEEPING; -+ st->uframe_sleeps = 1; - } else { - st->fsm = FIQ_HS_ISOC_TURBO; - st->hcchar_copy.b.chen = 1; ---- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c -+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c -@@ -2297,10 +2297,10 @@ void dwc_otg_fiq_unmangle_isoc(dwc_otg_h - dwc_urb->error_count++; - } - } -+ qh->sched_frame = dwc_frame_num_inc(qh->sched_frame, qh->interval * (nr_frames - 1)); -+ - //printk_ratelimited(KERN_INFO "%s: HS isochronous of %d/%d frames with %d errors complete\n", - // __FUNCTION__, i, dwc_urb->packet_count, dwc_urb->error_count); -- hcd->fops->complete(hcd, dwc_urb->priv, dwc_urb, 0); -- release_channel(hcd, qh->channel, qtd, DWC_OTG_HC_XFER_URB_COMPLETE); - } - - /** -@@ -2543,6 +2543,8 @@ void dwc_otg_hcd_handle_hc_fsm(dwc_otg_h - * fail. - */ - dwc_otg_fiq_unmangle_isoc(hcd, qh, qtd, num); -+ hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0); -+ release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE); - break; - - case FIQ_PER_SPLIT_LS_ABORTED: |