/**
* @brief Handle suspend
*
* @param intf Pointer to usb_interface
* @param message Pointer to pm_message_t structure
*
* @return MLAN_STATUS_SUCCESS
*/
static int
woal_usb_suspend(struct usb_interface *intf, pm_message_t message)
{
struct usb_card_rec *cardp = usb_get_intfdata(intf);
moal_handle *handle = NULL;
int i;
ENTER();
if (!cardp || !cardp->phandle) {
PRINTM(MERROR, "Card or moal_handle structure is not valid\n");
LEAVE();
return MLAN_STATUS_SUCCESS;
}
handle = cardp->phandle;
/* Enable Host Sleep */
woal_enable_hs(woal_get_priv(handle, MLAN_BSS_ROLE_ANY));
/* Indicate device suspended */
/* The flag must be set here before the usb_kill_urb() calls. Reason: In
the complete handlers, urb->status(= -ENOENT) and 'is_suspended' flag is
used in combination to distinguish between a suspended state and a
'disconnect' one. */
handle->is_suspended = MTRUE;
for (i = 0; i < handle->priv_num; i++)
netif_carrier_off(handle->priv[i]->netdev);
/* Unlink Rx cmd URB */
if (atomic_read(&cardp->rx_cmd_urb_pending) && cardp->rx_cmd.urb) {
usb_kill_urb(cardp->rx_cmd.urb);
}
/* Unlink Rx data URBs */
if (atomic_read(&cardp->rx_data_urb_pending)) {
for (i = 0; i < MVUSB_RX_DATA_URB; i++) {
if (cardp->rx_data_list[i].urb)
usb_kill_urb(cardp->rx_data_list[i].urb);
}
}
/* Unlink Tx data URBs */
for (i = 0; i < MVUSB_TX_HIGH_WMARK; i++) {
if (cardp->tx_data_list[i].urb) {
usb_kill_urb(cardp->tx_data_list[i].urb);
}
}
/* Unlink Tx cmd URB */
if (cardp->tx_cmd.urb) {
usb_kill_urb(cardp->tx_cmd.urb);
}
handle->suspend_wait_q_woken = MTRUE;
wake_up_interruptible(&handle->suspend_wait_q);
LEAVE();
return MLAN_STATUS_SUCCESS;
}
/** @brief This function handles client driver suspend
*
* @param dev A pointer to device structure
* @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
*/
int
woal_sdio_suspend(struct device *dev)
{
struct sdio_func *func = dev_to_sdio_func(dev);
mmc_pm_flag_t pm_flags = 0;
moal_handle *handle = NULL;
struct sdio_mmc_card *cardp;
int i;
int ret = MLAN_STATUS_SUCCESS;
int hs_actived = 0;
ENTER();
if (func) {
pm_flags = sdio_get_host_pm_caps(func);
PRINTM(MCMND, "%s: suspend: PM flags = 0x%x\n", sdio_func_id(func),
pm_flags);
if (!(pm_flags & MMC_PM_KEEP_POWER)) {
PRINTM(MERROR, "%s: cannot remain alive while host is suspended\n",
sdio_func_id(func));
LEAVE();
return -ENOSYS;
}
cardp = sdio_get_drvdata(func);
if (!cardp || !cardp->handle) {
PRINTM(MERROR, "Card or moal_handle structure is not valid\n");
LEAVE();
return MLAN_STATUS_SUCCESS;
}
} else {
PRINTM(MERROR, "sdio_func is not specified\n");
LEAVE();
return MLAN_STATUS_SUCCESS;
}
handle = cardp->handle;
if (pm_keep_power) {
/* Enable the Host Sleep */
hs_actived = woal_enable_hs(woal_get_priv(handle, MLAN_BSS_TYPE_ANY));
if (hs_actived) {
PRINTM(MCMND, "suspend with MMC_PM_KEEP_POWER\n");
ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
}
}
/* Indicate device suspended */
handle->is_suspended = MTRUE;
for (i = 0; i < handle->priv_num; i++)
netif_carrier_off(handle->priv[i]->netdev);
LEAVE();
return ret;
}
/** @brief This function handles client driver suspend
*
* @param dev A pointer to device structure
* @return MLAN_STATUS_SUCCESS or error code
*/
int
woal_sdio_suspend(struct device *dev)
{
struct sdio_func *func = dev_to_sdio_func(dev);
mmc_pm_flag_t pm_flags = 0;
moal_handle *handle = NULL;
struct sdio_mmc_card *cardp;
int i, retry_num = 8;
int ret = MLAN_STATUS_SUCCESS;
int hs_actived = 0;
mlan_ds_ps_info pm_info;
ENTER();
PRINTM(MCMND, "<--- Enter woal_sdio_suspend --->\n");
pm_flags = sdio_get_host_pm_caps(func);
PRINTM(MCMND, "%s: suspend: PM flags = 0x%x\n", sdio_func_id(func),
pm_flags);
if (!(pm_flags & MMC_PM_KEEP_POWER)) {
PRINTM(MERROR,
"%s: cannot remain alive while host is suspended\n",
sdio_func_id(func));
LEAVE();
return -ENOSYS;
}
cardp = sdio_get_drvdata(func);
if (!cardp || !cardp->handle) {
PRINTM(MERROR, "Card or moal_handle structure is not valid\n");
LEAVE();
return MLAN_STATUS_SUCCESS;
}
handle = cardp->handle;
if (handle->is_suspended == MTRUE) {
PRINTM(MWARN, "Device already suspended\n");
LEAVE();
return MLAN_STATUS_SUCCESS;
}
if (handle->fw_dump) {
PRINTM(MMSG, "suspend not allowed while FW dump!");
ret = -EBUSY;
goto done;
}
handle->suspend_fail = MFALSE;
memset(&pm_info, 0, sizeof(pm_info));
for (i = 0; i < retry_num; i++) {
if (MLAN_STATUS_SUCCESS ==
woal_get_pm_info(woal_get_priv(handle, MLAN_BSS_ROLE_ANY),
&pm_info)) {
if (pm_info.is_suspend_allowed == MTRUE)
break;
else
PRINTM(MMSG,
"Suspend not allowed and retry again\n");
}
woal_sched_timeout(100);
}
if (pm_info.is_suspend_allowed == MFALSE) {
PRINTM(MMSG, "Suspend not allowed\n");
ret = -EBUSY;
goto done;
}
for (i = 0; i < handle->priv_num; i++)
netif_device_detach(handle->priv[i]->netdev);
if (pm_keep_power) {
/* Enable the Host Sleep */
#ifdef MMC_PM_FUNC_SUSPENDED
handle->suspend_notify_req = MTRUE;
#endif
hs_actived =
woal_enable_hs(woal_get_priv
(handle, MLAN_BSS_ROLE_ANY));
#ifdef MMC_PM_FUNC_SUSPENDED
handle->suspend_notify_req = MFALSE;
#endif
if (hs_actived) {
#ifdef MMC_PM_SKIP_RESUME_PROBE
PRINTM(MCMND,
"suspend with MMC_PM_KEEP_POWER and MMC_PM_SKIP_RESUME_PROBE\n");
ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER |
MMC_PM_SKIP_RESUME_PROBE);
#else
PRINTM(MCMND, "suspend with MMC_PM_KEEP_POWER\n");
ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
#endif
} else {
PRINTM(MMSG, "HS not actived, suspend fail!");
handle->suspend_fail = MTRUE;
for (i = 0; i < handle->priv_num; i++)
netif_device_attach(handle->priv[i]->netdev);
ret = -EBUSY;
goto done;
}
}
/* Indicate device suspended */
handle->is_suspended = MTRUE;
done:
PRINTM(MCMND, "<--- Leave woal_sdio_suspend --->\n");
LEAVE();
return ret;
}
