[PATCH 1/1] firmware: imx: scu-pd: do not power off console domain

[Aisheng Dong]

> From: Dong Aisheng <aisheng.dong at nxp.com>
> Sent: Friday, March 5, 2021 9:18 PM
> 
> Do not power off console domain in runtime pm.
> 
> Signed-off-by: Dong Aisheng <aisheng.dong at nxp.com>

Sorry, Shawn, please ignore this one which was already included in
[PATCH v5 18/18] firmware: imx: scu-pd: do not power off console Domain

Regards
Aisheng

> ---
>  drivers/firmware/imx/scu-pd.c | 27 ++++++++++++++++++++++++++-
>  1 file changed, 26 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/firmware/imx/scu-pd.c b/drivers/firmware/imx/scu-pd.c
> index 53b49ef20014..b3848080db75 100644
> --- a/drivers/firmware/imx/scu-pd.c
> +++ b/drivers/firmware/imx/scu-pd.c
> @@ -86,6 +86,7 @@ struct imx_sc_pd_soc {
>  	u8 num_ranges;
>  };
> 
> +int imx_con_rsrc;
>  bool imx_scu_pd_initialized;
> 
>  /*
> @@ -209,6 +210,23 @@ to_imx_sc_pd(struct generic_pm_domain *genpd)
>  	return container_of(genpd, struct imx_sc_pm_domain, pd);  }
> 
> +static void imx_sc_pd_get_console_rsrc(void) {
> +	struct of_phandle_args specs;
> +	int ret;
> +
> +	if (!of_stdout)
> +		return;
> +
> +	ret = of_parse_phandle_with_args(of_stdout, "power-domains",
> +					 "#power-domain-cells",
> +					 0, &specs);
> +	if (ret)
> +		return;
> +
> +	imx_con_rsrc = specs.args[0];
> +}
> +
>  static int imx_sc_pd_power(struct generic_pm_domain *domain, bool
> power_on)  {
>  	struct imx_sc_msg_req_set_resource_power_mode msg; @@ -269,6
> +287,7 @@ imx_scu_add_pm_domain(struct device *dev, int idx,
>  		      const struct imx_sc_pd_range *pd_ranges)  {
>  	struct imx_sc_pm_domain *sc_pd;
> +	bool is_off = true;
>  	int ret;
> 
>  	if (!imx_sc_rm_is_resource_owned(pm_ipc_handle, pd_ranges->rsrc + idx))
> @@ -290,6 +309,10 @@ imx_scu_add_pm_domain(struct device *dev, int idx,
>  			 "%s", pd_ranges->name);
> 
>  	sc_pd->pd.name = sc_pd->name;
> +	if (imx_con_rsrc == sc_pd->rsrc) {
> +		sc_pd->pd.flags = GENPD_FLAG_RPM_ALWAYS_ON;
> +		is_off = false;
> +	}
> 
>  	if (sc_pd->rsrc >= IMX_SC_R_LAST) {
>  		dev_warn(dev, "invalid pd %s rsrc id %d found", @@ -299,7 +322,7
> @@ imx_scu_add_pm_domain(struct device *dev, int idx,
>  		return NULL;
>  	}
> 
> -	ret = pm_genpd_init(&sc_pd->pd, NULL, true);
> +	ret = pm_genpd_init(&sc_pd->pd, NULL, is_off);
>  	if (ret) {
>  		dev_warn(dev, "failed to init pd %s rsrc id %d",
>  			 sc_pd->name, sc_pd->rsrc);
> @@ -365,6 +388,8 @@ static int imx_sc_pd_probe(struct platform_device
> *pdev)
>  	if (!pd_soc)
>  		return -ENODEV;
> 
> +	imx_sc_pd_get_console_rsrc();
> +
>  	ret = imx_scu_init_pm_domains(&pdev->dev, pd_soc);
>  	if (!ret)
>  		imx_scu_pd_initialized = true;
> --
> 2.23.0