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

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Do not power off console domain in runtime pm.

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Dong Aisheng 2021-03-05 21:17:48 +08:00 committed by Shawn Guo
parent 1168935b96
commit 893cfb9973
1 changed files with 27 additions and 1 deletions
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28
drivers/firmware/imx/scu-pd.c
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@ -86,6 +86,8 @@ struct imx_sc_pd_soc {
u8 num_ranges; u8 num_ranges;
}; };
static int imx_con_rsrc;
static const struct imx_sc_pd_range imx8qxp_scu_pd_ranges[] = { static const struct imx_sc_pd_range imx8qxp_scu_pd_ranges[] = {
/* LSIO SS */ /* LSIO SS */
{ "pwm", IMX_SC_R_PWM_0, 8, true, 0 }, { "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); 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) static int imx_sc_pd_power(struct generic_pm_domain *domain, bool power_on)
{ {
struct imx_sc_msg_req_set_resource_power_mode msg; 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) const struct imx_sc_pd_range *pd_ranges)
{ {
struct imx_sc_pm_domain *sc_pd; struct imx_sc_pm_domain *sc_pd;
bool is_off = true;
int ret; int ret;
if (!imx_sc_rm_is_resource_owned(pm_ipc_handle, pd_ranges->rsrc + idx)) 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); "%s", pd_ranges->name);
sc_pd->pd.name = sc_pd->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) { if (sc_pd->rsrc >= IMX_SC_R_LAST) {
dev_warn(dev, "invalid pd %s rsrc id %d found", 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; return NULL;
} }
ret = pm_genpd_init(&sc_pd->pd, NULL, true); ret = pm_genpd_init(&sc_pd->pd, NULL, is_off);
if (ret) { if (ret) {
dev_warn(dev, "failed to init pd %s rsrc id %d", dev_warn(dev, "failed to init pd %s rsrc id %d",
sc_pd->name, sc_pd->rsrc); sc_pd->name, sc_pd->rsrc);
@ -363,6 +387,8 @@ static int imx_sc_pd_probe(struct platform_device *pdev)
if (!pd_soc) if (!pd_soc)
return -ENODEV; return -ENODEV;
imx_sc_pd_get_console_rsrc();
return imx_scu_init_pm_domains(&pdev->dev, pd_soc); return imx_scu_init_pm_domains(&pdev->dev, pd_soc);
} }