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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>
This commit is contained in:
David Gnedt 2014-01-07 13:05:45 +01:00 committed by John W. Linville
parent 64322e28d3
commit f7ad1eed4d
5 changed files with 58 additions and 1 deletions
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3
drivers/net/wireless/ti/wl1251/boot.c
View File

@ -299,7 +299,8 @@ int wl1251_boot_run_firmware(struct wl1251 *wl)
ROAMING_TRIGGER_LOW_RSSI_EVENT_ID |
ROAMING_TRIGGER_REGAINED_RSSI_EVENT_ID |
REGAINED_BSS_EVENT_ID | BT_PTA_SENSE_EVENT_ID |
BT_PTA_PREDICTION_EVENT_ID | JOIN_EVENT_COMPLETE_ID;
BT_PTA_PREDICTION_EVENT_ID | JOIN_EVENT_COMPLETE_ID |
PS_REPORT_EVENT_ID;
ret = wl1251_event_unmask(wl);
if (ret < 0) {

44
drivers/net/wireless/ti/wl1251/event.c
View File

@ -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");

7
drivers/net/wireless/ti/wl1251/event.h
View File

@ -112,6 +112,13 @@ struct event_mailbox {
u8 padding[19];
} __packed;
enum {
EVENT_ENTER_POWER_SAVE_FAIL = 0,
EVENT_ENTER_POWER_SAVE_SUCCESS,
EVENT_EXIT_POWER_SAVE_FAIL,
EVENT_EXIT_POWER_SAVE_SUCCESS,
};
int wl1251_event_unmask(struct wl1251 *wl);
void wl1251_event_mbox_config(struct wl1251 *wl);
int wl1251_event_handle(struct wl1251 *wl, u8 mbox);

2
drivers/net/wireless/ti/wl1251/main.c
View File

@ -479,6 +479,7 @@ static void wl1251_op_stop(struct ieee80211_hw *hw)
wl->next_tx_complete = 0;
wl->elp = false;
wl->station_mode = STATION_ACTIVE_MODE;
wl->psm_entry_retry = 0;
wl->tx_queue_stopped = false;
wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
wl->rssi_thold = 0;
@ -1414,6 +1415,7 @@ struct ieee80211_hw *wl1251_alloc_hw(void)
wl->elp = false;
wl->station_mode = STATION_ACTIVE_MODE;
wl->psm_requested = false;
wl->psm_entry_retry = 0;
wl->tx_queue_stopped = false;
wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
wl->rssi_thold = 0;

3
drivers/net/wireless/ti/wl1251/wl1251.h
View File

@ -368,6 +368,9 @@ struct wl1251 {
/* PSM mode requested */
bool psm_requested;
/* retry counter for PSM entries */
u8 psm_entry_retry;
u16 beacon_int;
u8 dtim_period;