Bluetooth: hci_intel: Remove LPM enabling from setup procedure

LPM can be enabled via a DDC write command at specific DDC ID.
As any other DDC value, this is up to the DDC config file to
include (or not) the low power mode configuration.

Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/drivers/bluetooth/hci_intel.c b/drivers/bluetooth/hci_intel.c
index f6f2b01..ed0a420 100644 (file)
--- a/drivers/bluetooth/hci_intel.c
+++ b/drivers/bluetooth/hci_intel.c
@@ -537,9 +537,7 @@ static int intel_setup(struct hci_uart *hu)
 {
        static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
                                          0x00, 0x08, 0x04, 0x00 };
-       static const u8 lpm_param[] = { 0x03, 0x07, 0x01, 0x0b };
        struct intel_data *intel = hu->priv;
-       struct intel_device *idev = NULL;
        struct hci_dev *hdev = hu->hdev;
        struct sk_buff *skb;
        struct intel_version ver;
@@ -884,35 +882,23 @@ done:
 
        bt_dev_info(hdev, "Device booted in %llu usecs", duration);
 
-       /* Enable LPM if matching pdev with wakeup enabled */
+       /* Enable LPM if matching pdev with wakeup enabled, set TX active
+        * until further LPM TX notification.
+        */
        mutex_lock(&intel_device_list_lock);
        list_for_each(p, &intel_device_list) {
                struct intel_device *dev = list_entry(p, struct intel_device,
                                                      list);
                if (hu->tty->dev->parent == dev->pdev->dev.parent) {
-                       if (device_may_wakeup(&dev->pdev->dev))
-                               idev = dev;
+                       if (device_may_wakeup(&dev->pdev->dev)) {
+                               set_bit(STATE_LPM_ENABLED, &intel->flags);
+                               set_bit(STATE_TX_ACTIVE, &intel->flags);
+                       }
                        break;
                }
        }
        mutex_unlock(&intel_device_list_lock);
 
-       if (!idev)
-               goto no_lpm;
-
-       bt_dev_info(hdev, "Enabling LPM");
-
-       skb = __hci_cmd_sync(hdev, 0xfc8b, sizeof(lpm_param), lpm_param,
-                            HCI_CMD_TIMEOUT);
-       if (IS_ERR(skb)) {
-               bt_dev_err(hdev, "Failed to enable LPM");
-               goto no_lpm;
-       }
-       kfree_skb(skb);
-
-       set_bit(STATE_LPM_ENABLED, &intel->flags);
-
-no_lpm:
        /* Ignore errors, device can work without DDC parameters */
        btintel_load_ddc_config(hdev, fwname);