diff options
Diffstat (limited to 'drivers/soc/renesas')
| -rw-r--r-- | drivers/soc/renesas/rcar-sysc.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/soc/renesas/rcar-sysc.c b/drivers/soc/renesas/rcar-sysc.c index 95120acc4d80..4ad6dcd19420 100644 --- a/drivers/soc/renesas/rcar-sysc.c +++ b/drivers/soc/renesas/rcar-sysc.c @@ -310,6 +310,8 @@ struct rcar_pm_domains { struct generic_pm_domain *domains[RCAR_PD_ALWAYS_ON + 1]; }; +static struct genpd_onecell_data *rcar_sysc_onecell_data; + static int __init rcar_sysc_pd_init(void) { const struct rcar_sysc_info *info; @@ -356,6 +358,7 @@ static int __init rcar_sysc_pd_init(void) domains->onecell_data.domains = domains->domains; domains->onecell_data.num_domains = ARRAY_SIZE(domains->domains); + rcar_sysc_onecell_data = &domains->onecell_data; for (i = 0, syscier = 0; i < info->num_areas; i++) syscier |= BIT(info->areas[i].isr_bit); @@ -449,3 +452,40 @@ void __init rcar_sysc_init(phys_addr_t base, u32 syscier) pr_debug("%s: syscier = 0x%08x\n", __func__, syscier); iowrite32(syscier, rcar_sysc_base + SYSCIER); } + +#ifdef CONFIG_ARCH_R8A7779 +static int rcar_sysc_power_cpu(unsigned int idx, bool on) +{ + struct generic_pm_domain *genpd; + struct rcar_sysc_pd *pd; + unsigned int i; + + if (!rcar_sysc_onecell_data) + return -ENODEV; + + for (i = 0; i < rcar_sysc_onecell_data->num_domains; i++) { + genpd = rcar_sysc_onecell_data->domains[i]; + if (!genpd) + continue; + + pd = to_rcar_pd(genpd); + if (!(pd->flags & PD_CPU) || pd->ch.chan_bit != idx) + continue; + + return on ? rcar_sysc_power_up(&pd->ch) + : rcar_sysc_power_down(&pd->ch); + } + + return -ENOENT; +} + +int rcar_sysc_power_down_cpu(unsigned int cpu) +{ + return rcar_sysc_power_cpu(cpu, false); +} + +int rcar_sysc_power_up_cpu(unsigned int cpu) +{ + return rcar_sysc_power_cpu(cpu, true); +} +#endif /* CONFIG_ARCH_R8A7779 */ |