diff options
Diffstat (limited to 'drivers/bluetooth/btmrvl_sdio.c')
| -rw-r--r-- | drivers/bluetooth/btmrvl_sdio.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c index d7d8f83d1c0..a853244e7fd 100644 --- a/drivers/bluetooth/btmrvl_sdio.c +++ b/drivers/bluetooth/btmrvl_sdio.c @@ -1046,11 +1046,111 @@ static void btmrvl_sdio_remove(struct sdio_func *func) } } +static int btmrvl_sdio_suspend(struct device *dev) +{ + struct sdio_func *func = dev_to_sdio_func(dev); + struct btmrvl_sdio_card *card; + struct btmrvl_private *priv; + mmc_pm_flag_t pm_flags; + struct hci_dev *hcidev; + + if (func) { + pm_flags = sdio_get_host_pm_caps(func); + BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func), + pm_flags); + if (!(pm_flags & MMC_PM_KEEP_POWER)) { + BT_ERR("%s: cannot remain alive while suspended", + sdio_func_id(func)); + return -ENOSYS; + } + card = sdio_get_drvdata(func); + if (!card || !card->priv) { + BT_ERR("card or priv structure is not valid"); + return 0; + } + } else { + BT_ERR("sdio_func is not specified"); + return 0; + } + + priv = card->priv; + + if (priv->adapter->hs_state != HS_ACTIVATED) { + if (btmrvl_enable_hs(priv)) { + BT_ERR("HS not actived, suspend failed!"); + return -EBUSY; + } + } + hcidev = priv->btmrvl_dev.hcidev; + BT_DBG("%s: SDIO suspend", hcidev->name); + hci_suspend_dev(hcidev); + skb_queue_purge(&priv->adapter->tx_queue); + + priv->adapter->is_suspended = true; + + /* We will keep the power when hs enabled successfully */ + if (priv->adapter->hs_state == HS_ACTIVATED) { + BT_DBG("suspend with MMC_PM_KEEP_POWER"); + return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); + } else { + BT_DBG("suspend without MMC_PM_KEEP_POWER"); + return 0; + } +} + +static int btmrvl_sdio_resume(struct device *dev) +{ + struct sdio_func *func = dev_to_sdio_func(dev); + struct btmrvl_sdio_card *card; + struct btmrvl_private *priv; + mmc_pm_flag_t pm_flags; + struct hci_dev *hcidev; + + if (func) { + pm_flags = sdio_get_host_pm_caps(func); + BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func), + pm_flags); + card = sdio_get_drvdata(func); + if (!card || !card->priv) { + BT_ERR("card or priv structure is not valid"); + return 0; + } + } else { + BT_ERR("sdio_func is not specified"); + return 0; + } + priv = card->priv; + + if (!priv->adapter->is_suspended) { + BT_DBG("device already resumed"); + return 0; + } + + priv->adapter->is_suspended = false; + hcidev = priv->btmrvl_dev.hcidev; + BT_DBG("%s: SDIO resume", hcidev->name); + hci_resume_dev(hcidev); + priv->hw_wakeup_firmware(priv); + priv->adapter->hs_state = HS_DEACTIVATED; + BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name); + + return 0; +} + +static const struct dev_pm_ops btmrvl_sdio_pm_ops = { + .suspend = btmrvl_sdio_suspend, + .resume = btmrvl_sdio_resume, +}; + static struct sdio_driver bt_mrvl_sdio = { .name = "btmrvl_sdio", .id_table = btmrvl_sdio_ids, .probe = btmrvl_sdio_probe, .remove = btmrvl_sdio_remove, + .drv = { + .owner = THIS_MODULE, + .pm = &btmrvl_sdio_pm_ops, + } }; static int __init btmrvl_sdio_init_module(void) |