59 lines
2.2 KiB
Diff
59 lines
2.2 KiB
Diff
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From 67b790ecbeab3f5493dc8306e87e503e1bb7bcdc Mon Sep 17 00:00:00 2001
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From: Paolo Sabatino <paolo.sabatino@gmail.com>
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Date: Sun, 29 Jan 2023 13:43:27 +0000
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Subject: [PATCH] fix spreadtrum (sprd) bluetooth broken park link status
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---
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drivers/bluetooth/hci_ldisc.c | 6 ++++++
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include/net/bluetooth/hci.h | 6 ++++++
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net/bluetooth/hci_sync.c | 2 +-
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3 files changed, 13 insertions(+), 1 deletion(-)
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diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
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--- a/drivers/bluetooth/hci_ldisc.c (revision 58aa050aa57333b34b358234002121c59fb3af26)
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+++ b/drivers/bluetooth/hci_ldisc.c (revision bf8ab2f58b21494ffde96979431a3da931deb48b)
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@@ -658,6 +658,12 @@
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hdev->setup = hci_uart_setup;
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SET_HCIDEV_DEV(hdev, hu->tty->dev);
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+ // Set the broken Park link status quirk, specific for spreadtrum (sprd)
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+ // bluetooth devices
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+ if (hdev->manufacturer == 0xffff && hu->tty->driver &&
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+ strncmp(hu->tty->driver->name, "ttyBT", 5) == 0)
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+ set_bit(HCI_QUIRK_BROKEN_PARK_LINK_STATUS, &hdev->quirks);
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+
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if (test_bit(HCI_UART_RAW_DEVICE, &hu->hdev_flags))
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set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
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diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
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--- a/include/net/bluetooth/hci.h (revision 58aa050aa57333b34b358234002121c59fb3af26)
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+++ b/include/net/bluetooth/hci.h (revision bf8ab2f58b21494ffde96979431a3da931deb48b)
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@@ -309,6 +309,12 @@
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/* HCI device quirks */
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enum {
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+ /*
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+ * Device declares that support Park link status, but it really
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+ * does not support it and fails to initialize
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+ */
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+ HCI_QUIRK_BROKEN_PARK_LINK_STATUS,
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+
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/* When this quirk is set, the HCI Reset command is send when
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* closing the transport instead of when opening it.
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*
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diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
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--- a/net/bluetooth/hci_sync.c (revision 58aa050aa57333b34b358234002121c59fb3af26)
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+++ b/net/bluetooth/hci_sync.c (revision bf8ab2f58b21494ffde96979431a3da931deb48b)
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@@ -3804,7 +3804,7 @@
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link_policy |= HCI_LP_HOLD;
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if (lmp_sniff_capable(hdev))
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link_policy |= HCI_LP_SNIFF;
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- if (lmp_park_capable(hdev))
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+ if (lmp_park_capable(hdev) && !test_bit(HCI_QUIRK_BROKEN_PARK_LINK_STATUS, &hdev->quirks))
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link_policy |= HCI_LP_PARK;
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cp.policy = cpu_to_le16(link_policy);
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--
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2.34.1
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