xiaomi-sm8450/android_kernel_xiaomi_sm8450
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[PATCH] ehci: add tt_usecs

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This adds the field tt_usecs to ehci_qh and ehci_iso_stream, and sets it
appropriately when setting them up as periodic endpoints.  It records
the transation translator's think_time (added in last patch) plus the
downstream (i.e. low or full speed) bustime of the transfer associated
with each interrupt or iso frame, as calculated by usb_calc_bus_time.

Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
david-b@pacbell.net
2005-08-13 18:44:58 -07:00
committed by Greg Kroah-Hartman
parent e09711aef4
commit d0384200f6
3 changed files with 13 additions and 0 deletions
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4
drivers/usb/host/ehci-sched.c
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@@ -700,6 +700,7 @@ iso_stream_init (
} else {
u32 addr;
int think_time;
addr = dev->ttport << 24;
if (!ehci_is_TDI(ehci)
@@ -709,6 +710,9 @@ iso_stream_init (
addr |= epnum << 8;
addr |= dev->devnum;
stream->usecs = HS_USECS_ISO (maxp);
think_time = dev->tt ? dev->tt->think_time : 0;
stream->tt_usecs = NS_TO_US (think_time + usb_calc_bus_time (
dev->speed, is_input, 1, maxp));
if (is_input) {
u32 tmp;