Re: [PATCH v2 13/17] remoteproc: Introducting new functions to start and stop an MCU

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Hi Mathieu,

On 3/24/20 4:45 PM, Mathieu Poirier wrote:
> Add new functions to replace direct calling of rproc->ops->start() and
> rproc->ops->stop().  That way different behaviour can be played out
> when booting an MCU or synchronising with it.
> 
> Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
> ---
>  drivers/remoteproc/remoteproc_core.c     |  6 +++---
>  drivers/remoteproc/remoteproc_internal.h | 12 ++++++++++++
>  2 files changed, 15 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
> index 488723fcb142..d3c4d7e6ca25 100644
> --- a/drivers/remoteproc/remoteproc_core.c
> +++ b/drivers/remoteproc/remoteproc_core.c
> @@ -1330,7 +1330,7 @@ static int rproc_start(struct rproc *rproc, const struct firmware *fw)
>  	}
>  
>  	/* power up the remote processor */
> -	ret = rproc->ops->start(rproc);
> +	ret = rproc_start_hw(rproc);
>  	if (ret) {
>  		dev_err(dev, "can't start rproc %s: %d\n", rproc->name, ret);
>  		goto unprepare_subdevices;
> @@ -1351,7 +1351,7 @@ static int rproc_start(struct rproc *rproc, const struct firmware *fw)
>  	return 0;
>  
>  stop_rproc:
> -	rproc->ops->stop(rproc);
> +	rproc_stop_hw(rproc);
>  unprepare_subdevices:
>  	rproc_unprepare_subdevices(rproc);
>  reset_table_ptr:
> @@ -1485,7 +1485,7 @@ static int rproc_stop(struct rproc *rproc, bool crashed)
>  	rproc->table_ptr = rproc->cached_table;
>  
>  	/* power off the remote processor */
> -	ret = rproc->ops->stop(rproc);
> +	ret = rproc_stop_hw(rproc);
>  	if (ret) {
>  		dev_err(dev, "can't stop rproc: %d\n", ret);
>  		return ret;
> diff --git a/drivers/remoteproc/remoteproc_internal.h b/drivers/remoteproc/remoteproc_internal.h
> index 5f711ceb97ba..7ca23d46dfd4 100644
> --- a/drivers/remoteproc/remoteproc_internal.h
> +++ b/drivers/remoteproc/remoteproc_internal.h
> @@ -160,4 +160,16 @@ struct resource_table *rproc_find_loaded_rsc_table(struct rproc *rproc,
>  	return NULL;
>  }
>  
> +static inline int rproc_start_hw(struct rproc *rproc)
> +{
> +	RPROC_OPS_HELPER(start, rproc);
> +	return -EINVAL;
> +}
> +
> +static inline int rproc_stop_hw(struct rproc *rproc)
> +{
> +	RPROC_OPS_HELPER(stop, rproc);
> +	return -EINVAL;
> +}

Since we already have the concept of subdevices, how about we call these
rproc_{start/stop}_device?

regards
Suman

> +
>  #endif /* REMOTEPROC_INTERNAL_H */
> 




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