26e2b58148
this is hw workaround to wake up azalia from d3. display asic and azalia are two different pci devices. while display asic wake from d3, current hw does not send signal to azalia. workaround: display driver ask smu send message to azalia device to let azalia wake up. Defintion of SMU message, like PPSMC_MSG_BacroAudioD3PME, is per asic. It is shared by different OS. Signed-off-by: hersen wu <hersenxs.wu@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>