• Kiran K's avatar
    Bluetooth: btintel: Add support to reset bluetooth via ACPI DSM · 8f0a3786
    Kiran K authored
    New Intel platforms supports reset of Bluetooth device  via ACPI DSM
    methods. The legacy reset mechanism via GPIO will be deprecated in
    future. This patch checks the platform support for reset methods and if
    supported uses the same instead of legacy GPIO toggling method.
    
    ACPI firmware supports two types of reset method based on NIC card.
    (Discrete or Integrated).
    
    1. VSEC Type - Vendor Specific Extended Capability. Here  BT_EN and
       BT_IF_SELECT lines are driven by a register in PCH cluster. This
       interface is supported on discrete BT solution.
    
    2. WDISABLE2 - In this soluton, W_DISABLE2 pin in M.2 is connected to
       physical GPIO from PCH. The DSM interface shall toggle this to recover
       from  error.
    Signed-off-by: default avatarKiran K <kiran.k@intel.com>
    Signed-off-by: default avatarLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
    8f0a3786
btintel.c 76.8 KB