linux-kernel - Re: [PATCH v2 08/12] remoteproc: stm32: Introduce new start ops for synchronisation

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Message-ID: <d9df6dba-6e99-d3cb-56e5-d7b9be0925f8@st.com>
Date:   Wed, 29 Apr 2020 16:50:02 +0200
From:   Arnaud POULIQUEN <arnaud.pouliquen@...com>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>,
        <bjorn.andersson@...aro.org>, <ohad@...ery.com>,
        <mcoquelin.stm32@...il.com>, <alexandre.torgue@...com>
CC:     <loic.pallardy@...com>, <linux-remoteproc@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 08/12] remoteproc: stm32: Introduce new start ops for
 synchronisation



On 4/24/20 10:25 PM, Mathieu Poirier wrote:
> Introduce new start functions to be used when synchonising with an MCU.
> 
> Mainly based on the work published by Arnaud Pouliquen [1].
> 
> [1]. https://patchwork.kernel.org/project/linux-remoteproc/list/?series=239877
> 
> Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>

Reviewed-by: Arnaud Pouliquen <arnaud.pouliquen@...com>

Thanks,
Arnaud

> ---
>  drivers/remoteproc/stm32_rproc.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
> index 8ba69e903851..404f17a97095 100644
> --- a/drivers/remoteproc/stm32_rproc.c
> +++ b/drivers/remoteproc/stm32_rproc.c
> @@ -449,6 +449,13 @@ static int stm32_rproc_start(struct rproc *rproc)
>  	return stm32_rproc_set_hold_boot(rproc, true);
>  }
>  
> +static int stm32_rproc_sync_start(struct rproc *rproc)
> +{
> +	stm32_rproc_add_coredump_trace(rproc);
> +
> +	return stm32_rproc_set_hold_boot(rproc, true);
> +}
> +
>  static int stm32_rproc_stop(struct rproc *rproc)
>  {
>  	struct stm32_rproc *ddata = rproc->priv;
> @@ -522,6 +529,10 @@ static struct rproc_ops st_rproc_ops = {
>  	.get_boot_addr	= rproc_elf_get_boot_addr,
>  };
>  
> +static __maybe_unused struct rproc_ops st_rproc_sync_ops = {
> +	.start		= stm32_rproc_sync_start,
> +};
> +
>  static const struct of_device_id stm32_rproc_match[] = {
>  	{ .compatible = "st,stm32mp1-m4" },
>  	{},
>