Hi Marcel, Gustavo,
> From: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
>
> Host sleep is activated using already configured host sleep
> parameters in suspend handler and it is cancelled in resume
> handler.
>
> Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
> Signed-off-by: Bing Zhao <bzhao@xxxxxxxxxxx>
> ---
> v2: remove '\n' at end of BT_DBG, BT_ERR. (Marcel Holtmann)
Could you please review this v2 patch?
Thanks,
Bing
>
> drivers/bluetooth/btmrvl_drv.h | 2 +
> drivers/bluetooth/btmrvl_main.c | 3 +-
> drivers/bluetooth/btmrvl_sdio.c | 100 +++++++++++++++++++++++++++++++++++++++
> 3 files changed, 104 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/bluetooth/btmrvl_drv.h b/drivers/bluetooth/btmrvl_drv.h
> index 2c79e76..94f2d65 100644
> --- a/drivers/bluetooth/btmrvl_drv.h
> +++ b/drivers/bluetooth/btmrvl_drv.h
> @@ -67,6 +67,7 @@ struct btmrvl_adapter {
> u8 wakeup_tries;
> wait_queue_head_t cmd_wait_q;
> u8 cmd_complete;
> + bool is_suspended;
> };
>
> struct btmrvl_private {
> @@ -142,6 +143,7 @@ int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd);
> int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv);
> int btmrvl_enable_ps(struct btmrvl_private *priv);
> int btmrvl_prepare_command(struct btmrvl_private *priv);
> +int btmrvl_enable_hs(struct btmrvl_private *priv);
>
> #ifdef CONFIG_DEBUG_FS
> void btmrvl_debugfs_init(struct hci_dev *hdev);
> diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c
> index a880537..681ca9d 100644
> --- a/drivers/bluetooth/btmrvl_main.c
> +++ b/drivers/bluetooth/btmrvl_main.c
> @@ -262,7 +262,7 @@ int btmrvl_enable_ps(struct btmrvl_private *priv)
> }
> EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
>
> -static int btmrvl_enable_hs(struct btmrvl_private *priv)
> +int btmrvl_enable_hs(struct btmrvl_private *priv)
> {
> struct sk_buff *skb;
> struct btmrvl_cmd *cmd;
> @@ -298,6 +298,7 @@ static int btmrvl_enable_hs(struct btmrvl_private *priv)
>
> return ret;
> }
> +EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
>
> int btmrvl_prepare_command(struct btmrvl_private *priv)
> {
> diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
> index d7d8f83..a853244 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)
> --
> 1.7.0.4
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