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| author | David Gnedt <david.gnedt@davizone.at> | 2014-01-07 16:05:45 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2014-01-09 19:53:38 +0400 |
| commit | f7ad1eed4d4b9d5f0b7ada151d5670e7cb33a6e7 (patch) | |
| tree | c15725d6f87621d80a9bb90fa62cef24ed75c429 /drivers/net/wireless/ti/wl1251/event.c | |
| parent | 64322e28d3f91a196c0e86de2790cdd338a74c28 (diff) | |
| download | linux-f7ad1eed4d4b9d5f0b7ada151d5670e7cb33a6e7.tar.xz | |
wl1251: retry power save entry
Port of the power save entry retry code from wl1251 driver version included
in the Maemo Fremantle kernel.
This tries to enable power save mode up to 3 times before failing.
Signed-off-by: David Gnedt <david.gnedt@davizone.at>
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ti/wl1251/event.c')
| -rw-r--r-- | drivers/net/wireless/ti/wl1251/event.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/net/wireless/ti/wl1251/event.c b/drivers/net/wireless/ti/wl1251/event.c index 74ae8e1c2e33..192cebd120d8 100644 --- a/drivers/net/wireless/ti/wl1251/event.c +++ b/drivers/net/wireless/ti/wl1251/event.c @@ -46,6 +46,43 @@ static int wl1251_event_scan_complete(struct wl1251 *wl, return ret; } +#define WL1251_PSM_ENTRY_RETRIES 3 +static int wl1251_event_ps_report(struct wl1251 *wl, + struct event_mailbox *mbox) +{ + int ret = 0; + + wl1251_debug(DEBUG_EVENT, "ps status: %x", mbox->ps_status); + + switch (mbox->ps_status) { + case EVENT_ENTER_POWER_SAVE_FAIL: + wl1251_debug(DEBUG_PSM, "PSM entry failed"); + + if (wl->station_mode != STATION_POWER_SAVE_MODE) { + /* remain in active mode */ + wl->psm_entry_retry = 0; + break; + } + + if (wl->psm_entry_retry < WL1251_PSM_ENTRY_RETRIES) { + wl->psm_entry_retry++; + ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); + } else { + wl1251_error("Power save entry failed, giving up"); + wl->psm_entry_retry = 0; + } + break; + case EVENT_ENTER_POWER_SAVE_SUCCESS: + case EVENT_EXIT_POWER_SAVE_FAIL: + case EVENT_EXIT_POWER_SAVE_SUCCESS: + default: + wl->psm_entry_retry = 0; + break; + } + + return 0; +} + static void wl1251_event_mbox_dump(struct event_mailbox *mbox) { wl1251_debug(DEBUG_EVENT, "MBOX DUMP:"); @@ -80,6 +117,13 @@ static int wl1251_event_process(struct wl1251 *wl, struct event_mailbox *mbox) } } + if (vector & PS_REPORT_EVENT_ID) { + wl1251_debug(DEBUG_EVENT, "PS_REPORT_EVENT"); + ret = wl1251_event_ps_report(wl, mbox); + if (ret < 0) + return ret; + } + if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID) { wl1251_debug(DEBUG_EVENT, "SYNCHRONIZATION_TIMEOUT_EVENT"); |