Re: [PATCH V3 08/14] i3c: master: Support IBI-based wakeup capability

[Mukesh Savaliya <mukesh.savaliya@oss.qualcomm.com>]

On 8/4/2026 7:08 PM, Adrian Hunter wrote:
[...]
> diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
> index e7ea41007889..e6b320da475e 100644
> --- a/drivers/i3c/master.c
> +++ b/drivers/i3c/master.c
> @@ -2110,6 +2110,13 @@ i3c_master_register_new_i3c_devs(struct i3c_master_controller *master)
>   		if (desc->boardinfo)
>   			device_set_node(&desc->dev->dev, desc->boardinfo->fwnode);
>   
> +		/*
> +		 * In the case of IBI wakeup, any IBI-capable device can
> +		 * wakeup.
you are registering a particular device to the master, so why "any 
IBI-capable device " ?

"If device has IBI capability, mark as wakeup capable" to simplify 
comment  ?
> +		 */
> +		if (master->ibi_wakeup && (desc->info.bcr & I3C_BCR_IBI_REQ_CAP))
> +			device_set_wakeup_capable(&desc->dev->dev, true);
> +
>   		list_add_tail(&desc->dev->node, &i3c_unreg_devs);
>   	}
>   
> diff --git a/include/linux/i3c/master.h b/include/linux/i3c/master.h
> index 2b96c4ea75fb..16394aca7230 100644
> --- a/include/linux/i3c/master.h
> +++ b/include/linux/i3c/master.h
> @@ -523,6 +523,7 @@ struct i3c_master_controller_ops {
>    * @hotjoin: true if the master support hotjoin
>    * @rpm_allowed: true if Runtime PM allowed
>    * @rpm_ibi_allowed: true if IBI and Hot-Join allowed while runtime suspended
> + * @ibi_wakeup: IBI can wakeup the system
>    * @shutting_down: set to true when master begins shutdown or unregister
>    * @boardinfo.i3c: list of I3C  boardinfo objects
>    * @boardinfo.i2c: list of I2C boardinfo objects
> @@ -562,6 +563,7 @@ struct i3c_master_controller {
>   	unsigned int hotjoin: 1;
>   	unsigned int rpm_allowed: 1;
>   	unsigned int rpm_ibi_allowed: 1;
> +	unsigned int ibi_wakeup: 1;
>   	bool shutting_down;
>   	struct {
>   		struct list_head i3c;