Re: [PATCH V2 6/8] soundwire: amd: add runtime pm ops for AMD soundwire manager driver

Mukunda,Vijendar
2023-02-14T21:42:54Z

On 14/02/23 19:03, Pierre-Louis Bossart wrote:
>
>>>> +/* AMD pm_runtime quirk definitions */
>>>> +
>>>> +/*
>>>> + * Force the clock to stop(ClockStopMode0) when suspend callback
>>>> + * is invoked.
>>>> + */
>>>> +#define AMD_SDW_CLK_STOP_MODE 1
>>>> +
>>>> +/*
>>>> + * Stop the bus when runtime suspend/system level suspend callback
>>>> + * is invoked. If set, a complete bus reset and re-enumeration will
>>>> + * be performed when the bus restarts.
>>>> + */
>>>> +#define AMD_SDW_POWER_OFF_MODE 2
>>> You need to clarify this mode, can you deal with device in-band wakes if
>>> the power is off?
>> On the Current platform, in-band wakes are not supported if the power is off.
> Humm, that's an important clarification.
>
> Does this mean your link0 will never use the POWER_OFF_MODE since it
> includes support for headset codecs and you want the ability to detect
> jacks status changes?
Yes. we will use CLK_STOP_MODE in runtime pm and system suspend
for Link0 when jack codec is connected over Link 0.
>
> Or is this more like CLK_STOP_MODE is used in runtime pm and POWER_OFF
> in system suspend?