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usb: xhci-mtk: update fs bus bandwidth by bw_budget_table 

Use @bw_budget_table[] to update fs bus bandwidth due to
not all microframes consume @bw_cost_per_microframe, see
setup_sch_info().

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1629189389-18779-6-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunfeng Yun 2021-08-17 16:36:26 +08:00 committed by Greg Kroah-Hartman
parent de5107f473
commit 451d391258
1 changed files with 7 additions and 10 deletions
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17
drivers/usb/host/xhci-mtk-sch.c
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@ -458,8 +458,8 @@ static int check_fs_bus_bw(struct mu3h_sch_ep_info *sch_ep, int offset)
* Compared with hs bus, no matter what ep type,
* the hub will always delay one uframe to send data
*/
for (j = 0; j < sch_ep->cs_count; j++) {
tmp = tt->fs_bus_bw[base + j] + sch_ep->bw_cost_per_microframe;
for (j = 0; j < sch_ep->num_budget_microframes; j++) {
tmp = tt->fs_bus_bw[base + j] + sch_ep->bw_budget_table[j];
if (tmp > FS_PAYLOAD_MAX)
return -ESCH_BW_OVERFLOW;
}
@ -534,21 +534,18 @@ static void update_sch_tt(struct mu3h_sch_ep_info *sch_ep, bool used)
{
struct mu3h_sch_tt *tt = sch_ep->sch_tt;
u32 base, num_esit;
int bw_updated;
int i, j;
num_esit = XHCI_MTK_MAX_ESIT / sch_ep->esit;
if (used)
bw_updated = sch_ep->bw_cost_per_microframe;
else
bw_updated = -sch_ep->bw_cost_per_microframe;
for (i = 0; i < num_esit; i++) {
base = sch_ep->offset + i * sch_ep->esit;
for (j = 0; j < sch_ep->cs_count; j++)
tt->fs_bus_bw[base + j] += bw_updated;
for (j = 0; j < sch_ep->num_budget_microframes; j++)
if (used)
tt->fs_bus_bw[base + j] += sch_ep->bw_budget_table[j];
else
tt->fs_bus_bw[base + j] -= sch_ep->bw_budget_table[j];
}
if (used)