[PATCH v2 1/4] soc: apple: rtkit: Add and use PWR_STATE_INIT instead of _ON

[Alyssa Rosenzweig]

Reviewed-by: Alyssa Rosenzweig <alyssa at rosenzweig.io>

Le Wed , Feb 26, 2025 at 07:00:03PM +0000, Sven Peter via B4 Relay a écrit :
> From: Janne Grunau <j at jannau.net>
> 
> This state is needed to wake the dcp IOP after m1n1 shut it down
> and works for all other co-processors as well.
> 
> Signed-off-by: Janne Grunau <j at jannau.net>
> Signed-off-by: Sven Peter <sven at svenpeter.dev>
> ---
>  drivers/soc/apple/rtkit.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/soc/apple/rtkit.c b/drivers/soc/apple/rtkit.c
> index 2f5f878bf899..be0d08861168 100644
> --- a/drivers/soc/apple/rtkit.c
> +++ b/drivers/soc/apple/rtkit.c
> @@ -12,6 +12,7 @@ enum {
>  	APPLE_RTKIT_PWR_STATE_IDLE = 0x201, /* sleeping, retain state */
>  	APPLE_RTKIT_PWR_STATE_QUIESCED = 0x10, /* running but no communication */
>  	APPLE_RTKIT_PWR_STATE_ON = 0x20, /* normal operating state */
> +	APPLE_RTKIT_PWR_STATE_INIT = 0x220, /* init after starting the coproc */
>  };
>  
>  enum {
> @@ -898,7 +899,7 @@ int apple_rtkit_wake(struct apple_rtkit *rtk)
>  	 * Use open-coded apple_rtkit_set_iop_power_state since apple_rtkit_boot
>  	 * will wait for the completion anyway.
>  	 */
> -	msg = FIELD_PREP(APPLE_RTKIT_MGMT_PWR_STATE, APPLE_RTKIT_PWR_STATE_ON);
> +	msg = FIELD_PREP(APPLE_RTKIT_MGMT_PWR_STATE, APPLE_RTKIT_PWR_STATE_INIT);
>  	ret = apple_rtkit_management_send(rtk, APPLE_RTKIT_MGMT_SET_IOP_PWR_STATE,
>  					  msg);
>  	if (ret)
> 
> -- 
> 2.34.1
> 
>