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add log2_of and use this function in get_period_head

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This commit is contained in:
hathach
2013-05-06 20:51:34 +07:00
parent 41fee0f488
commit 861f02943d
2 changed files with 51 additions and 44 deletions
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6
tinyusb/host/ehci/ehci.c
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@@ -711,10 +711,8 @@ STATIC_ INLINE_ ehci_qhd_t* get_async_head(uint8_t hostid)
STATIC_ INLINE_ ehci_link_t* get_period_head(uint8_t hostid, uint8_t interval_ms)
{
return (ehci_link_t*) (ehci_data.period_head_arr[ hostid_to_data_idx(hostid) ] +
(interval_ms < 2 ? 0 :
interval_ms < 4 ? 1 :
interval_ms < EHCI_FRAMELIST_SIZE ? 2 : 3));
return (ehci_link_t*) (&ehci_data.period_head_arr[ hostid_to_data_idx(hostid) ]
[ log2_of( min8_of(EHCI_FRAMELIST_SIZE, interval_ms) ) ] );
}
STATIC_ INLINE_ ehci_qhd_t* get_control_qhd(uint8_t dev_addr)