[PATCH 5/6] btbcm: disable read tx power for iMac 20,1 (Retina 5K, 27-inch, 2020)

From: Aditya Garg
Date: Mon Nov 29 2021 - 02:34:18 EST


From: Aditya Garg <gargaditya08@xxxxxxxx>

Bluetooth on Apple iMac 20,1 is unable to start due to LE Min/Max Tx Power being queried on startup. Add a DMI based quirk so that it is disabled.

Signed-off-by: Aditya Garg <gargaditya08@xxxxxxxx>
---
drivers/bluetooth/btbcm.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c
index 88214b453b0ce..15c5be927c659 100644
--- a/drivers/bluetooth/btbcm.c
+++ b/drivers/bluetooth/btbcm.c
@@ -372,6 +372,15 @@ static const struct dmi_system_id disable_broken_read_transmit_power[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,4"),
},
},
+ {
+ /* Match for Apple iMac 20,1 which needs
+ * Read LE Min/Max Tx Power to be disabled.
+ */
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,1"),
+ },
+ },
{ }
};