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wlcore: change the wait for event mechanism

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wlcore needs to wait for certain events for example
for roc complete event. Usually the events are received
from the FW very fast, therefore wlcore can poll with
a short delay and if after a second the event was
not received yet poll with a long (1-5 msec) delay.

This implementation is similar to the sending of
commands to the FW.

Empirically the change reduced the wait for roc event
from ~10-40msec to 100s of usecs.

[replace udelay/msleep with usleep_range - Arik]

Signed-off-by: Yoni Divinsky <yoni.divinsky@ti.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
This commit is contained in:
Yoni Divinsky 2012-06-27 21:35:47 +03:00 committed by John W. Linville
parent c24ec83bca
commit c45ee4ff1f
1 changed files with 7 additions and 1 deletions
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8
drivers/net/wireless/ti/wlcore/cmd.c
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@ -39,6 +39,7 @@
#include "hw_ops.h"
#define WL1271_CMD_FAST_POLL_COUNT 50
#define WL1271_WAIT_EVENT_FAST_POLL_COUNT 20
/*
* send command to firmware
@ -138,6 +139,7 @@ static int wl1271_cmd_wait_for_event_or_timeout(struct wl1271 *wl,
u32 *events_vector;
u32 event;
unsigned long timeout_time;
u16 poll_count = 0;
int ret = 0;
*timeout = false;
@ -156,7 +158,11 @@ static int wl1271_cmd_wait_for_event_or_timeout(struct wl1271 *wl,
goto out;
}
msleep(1);
poll_count++;
if (poll_count < WL1271_WAIT_EVENT_FAST_POLL_COUNT)
usleep_range(50, 51);
else
usleep_range(1000, 5000);
/* read from both event fields */
ret = wlcore_read(wl, wl->mbox_ptr[0], events_vector,