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ath6kl: Wait for host sleep mode cmd processed event during WOW suspend 

For every WMI_SET_HOST_SLEEP_MODE_CMDID command (send from the host),
the firmware sends WMI_SET_HOST_SLEEP_MODE_CMD_PROCESSED_EVENTID as
an acknowledgement to the host.

In order to being sync with the firmware, the host has to wait for
WMI_SET_HOST_SLEEP_MODE_CMD_PROCESSED_EVENT event before going to
the suspend state. This patch ensures ath6kl_wow_suspend() waits
until it gets this event after sending set host sleep mode command.

This patch adds,
 * New command WMI_SET_HOST_SLEEP_MODE_CMD_PROCESSED_EVENTID in
   WMI event table.
 * New WMI function ath6kl_wmi_host_sleep_mode_cmd_prcd_evt_rx()
   to process the event.
 * New flag HOST_SLEEP_MODE_CMD_PROCESSED in VIF flags to record
   the arrival of the event.

Signed-off-by: Raja Mani <rmani@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Raja Mani 2012-01-30 17:13:11 +05:30 committed by Kalle Valo
parent d91e8eee04
commit 081c7a84e9
4 changed files with 35 additions and 0 deletions
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15
drivers/net/wireless/ath/ath6kl/cfg80211.c
View File

@ -1975,11 +1975,26 @@ static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
if (ret)
return ret;
clear_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
ATH6KL_HOST_MODE_ASLEEP);
if (ret)
return ret;
left = wait_event_interruptible_timeout(ar->event_wq,
test_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags),
WMI_TIMEOUT);
if (left == 0) {
ath6kl_warn("timeout, didn't get host sleep cmd "
"processed event\n");
ret = -ETIMEDOUT;
} else if (left < 0) {
ath6kl_warn("error while waiting for host sleep cmd "
"processed event %d\n", left);
ret = left;
}
if (ar->tx_pending[ar->ctrl_ep]) {
left = wait_event_interruptible_timeout(ar->event_wq,
ar->tx_pending[ar->ctrl_ep] == 0, WMI_TIMEOUT);

1
drivers/net/wireless/ath/ath6kl/core.h
View File

@ -451,6 +451,7 @@ enum ath6kl_vif_state {
DTIM_PERIOD_AVAIL,
WLAN_ENABLED,
STATS_UPDATE_PEND,
HOST_SLEEP_MODE_CMD_PROCESSED,
};
struct ath6kl_vif {

17
drivers/net/wireless/ath/ath6kl/wmi.c
View File

@ -2590,6 +2590,18 @@ int ath6kl_wmi_set_host_sleep_mode_cmd(struct wmi *wmi, u8 if_idx,
return ret;
}
/* This command has zero length payload */
static int ath6kl_wmi_host_sleep_mode_cmd_prcd_evt_rx(struct wmi *wmi,
struct ath6kl_vif *vif)
{
struct ath6kl *ar = wmi->parent_dev;
set_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
wake_up(&ar->event_wq);
return 0;
}
int ath6kl_wmi_set_wow_mode_cmd(struct wmi *wmi, u8 if_idx,
enum ath6kl_wow_mode wow_mode,
u32 filter, u16 host_req_delay)
@ -3556,6 +3568,11 @@ int ath6kl_wmi_control_rx(struct wmi *wmi, struct sk_buff *skb)
ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_TX_COMPLETE_EVENTID\n");
ret = ath6kl_wmi_tx_complete_event_rx(datap, len);
break;
case WMI_SET_HOST_SLEEP_MODE_CMD_PROCESSED_EVENTID:
ath6kl_dbg(ATH6KL_DBG_WMI,
"WMI_SET_HOST_SLEEP_MODE_CMD_PROCESSED_EVENTID");
ret = ath6kl_wmi_host_sleep_mode_cmd_prcd_evt_rx(wmi, vif);
break;
case WMI_REMAIN_ON_CHNL_EVENTID:
ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_REMAIN_ON_CHNL_EVENTID\n");
ret = ath6kl_wmi_remain_on_chnl_event_rx(wmi, datap, len, vif);

2
drivers/net/wireless/ath/ath6kl/wmi.h
View File

@ -1357,6 +1357,8 @@ enum wmi_event_id {
WMI_P2P_START_SDPD_EVENTID,
WMI_P2P_SDPD_RX_EVENTID,
WMI_SET_HOST_SLEEP_MODE_CMD_PROCESSED_EVENTID = 0x1047,
WMI_THIN_RESERVED_START_EVENTID = 0x8000,
/* Events in this range are reserved for thinmode */
WMI_THIN_RESERVED_END_EVENTID = 0x8fff,