Commit 893cfb99 authored by Dong Aisheng's avatar Dong Aisheng Committed by Shawn Guo
Browse files

firmware: imx: scu-pd: do not power off console domain 



Do not power off console domain in runtime pm.

Signed-off-by: default avatarDong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent 1168935b

drivers/firmware/imx/scu-pd.c

+27 −1
Original line number Diff line number Diff line
@@ -86,6 +86,8 @@ struct imx_sc_pd_soc { 
	u8 num_ranges;

};



static int imx_con_rsrc;



static const struct imx_sc_pd_range imx8qxp_scu_pd_ranges[] = {

	/* LSIO SS */

	{ "pwm", IMX_SC_R_PWM_0, 8, true, 0 },
@@ -207,6 +209,23 @@ 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;
@@ -267,6 +286,7 @@ 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))
@@ -288,6 +308,10 @@ 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",
@@ -297,7 +321,7 @@ 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);
@@ -363,6 +387,8 @@ static int imx_sc_pd_probe(struct platform_device *pdev) 
	if (!pd_soc)

		return -ENODEV;



	imx_sc_pd_get_console_rsrc();



	return imx_scu_init_pm_domains(&pdev->dev, pd_soc);

}