[PATCH 4/4] Bluetooth: btmtksdio: add support of processing firmware coredump and log
From: <sean.wang@mediatek.com>
Date: 2021-11-19 22:26:11
Also in:
linux-mediatek, lkml
Subsystem:
bluetooth drivers, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
From: Sean Wang <sean.wang@mediatek.com> Add support of processing the firmware coredump and log for the diagnostic purpose. Co-developed-by: Mark-yw Chen <redacted> Signed-off-by: Mark-yw Chen <redacted> Signed-off-by: Sean Wang <sean.wang@mediatek.com> --- drivers/bluetooth/btmtksdio.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
index cae1fcd15512..adf9c89648cc 100644
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c@@ -324,8 +324,29 @@ static int btmtksdio_recv_event(struct hci_dev *hdev, struct sk_buff *skb) return err; } +static int btmtksdio_recv_acl(struct hci_dev *hdev, struct sk_buff *skb) +{ + struct btmtksdio_dev *bdev = hci_get_drvdata(hdev); + u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle); + + switch (handle) { + case 0xfc6f: + /* Firmware dump from device: when the firmware hangs, the + * device can no longer suspend and thus disable auto-suspend. + */ + pm_runtime_forbid(bdev->dev); + fallthrough; + case 0x05ff: + case 0x05fe: + /* Firmware debug logging */ + return hci_recv_diag(hdev, skb); + } + + return hci_recv_frame(hdev, skb); +} + static const struct h4_recv_pkt mtk_recv_pkts[] = { - { H4_RECV_ACL, .recv = hci_recv_frame }, + { H4_RECV_ACL, .recv = btmtksdio_recv_acl }, { H4_RECV_SCO, .recv = hci_recv_frame }, { H4_RECV_EVENT, .recv = btmtksdio_recv_event }, };
--
2.25.1