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Bluetooth: btrtl: Ask ic_info to drop firmware

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Some un-support wakeup platforms keep USB power and suspend signal
is coming late, this makes Realtek some chip keep its firmware,
and make it never load new firmware.

So use vendor specific HCI command to ask them drop its firmware after
system shutdown or resume.

Signed-off-by: Hilda Wu <hildawu@realtek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Hilda Wu 2021-09-30 18:36:34 +08:00 committed by Marcel Holtmann
parent 4fd6d49079
commit cd36742a95
1 changed files with 7 additions and 5 deletions
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12
drivers/bluetooth/btrtl.c
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@ -601,8 +601,10 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev,
hci_rev = le16_to_cpu(resp->hci_rev);
lmp_subver = le16_to_cpu(resp->lmp_subver);
if (resp->hci_ver == 0x8 && le16_to_cpu(resp->hci_rev) == 0x826c &&
resp->lmp_ver == 0x8 && le16_to_cpu(resp->lmp_subver) == 0xa99e)
btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, hci_ver,
hdev->bus);
if (!btrtl_dev->ic_info)
btrtl_dev->drop_fw = true;
if (btrtl_dev->drop_fw) {
@ -641,13 +643,13 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev,
hci_ver = resp->hci_ver;
hci_rev = le16_to_cpu(resp->hci_rev);
lmp_subver = le16_to_cpu(resp->lmp_subver);
btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, hci_ver,
hdev->bus);
}
out_free:
kfree_skb(skb);
btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, hci_ver,
hdev->bus);
if (!btrtl_dev->ic_info) {
rtl_dev_info(hdev, "unknown IC info, lmp subver %04x, hci rev %04x, hci ver %04x",
lmp_subver, hci_rev, hci_ver);