diff options
Diffstat (limited to 'drivers/soc/tegra')
| -rw-r--r-- | drivers/soc/tegra/pmc.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index ceceb1709e0a..2ace21db4ae8 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -429,6 +429,9 @@ struct tegra_pmc { struct irq_chip irq; struct notifier_block clk_nb; + + bool core_domain_state_synced; + bool core_domain_registered; }; static struct tegra_pmc *pmc = &(struct tegra_pmc) { @@ -1303,6 +1306,11 @@ free_mem: return err; } +bool tegra_pmc_core_domain_state_synced(void) +{ + return pmc->core_domain_state_synced; +} + static int tegra_pmc_core_pd_set_performance_state(struct generic_pm_domain *genpd, unsigned int level) @@ -1370,6 +1378,8 @@ static int tegra_pmc_core_pd_add(struct tegra_pmc *pmc, struct device_node *np) goto remove_genpd; } + pmc->core_domain_registered = true; + return 0; remove_genpd: @@ -3782,6 +3792,29 @@ static const struct of_device_id tegra_pmc_match[] = { { } }; +static void tegra_pmc_sync_state(struct device *dev) +{ + int err; + + /* + * Older device-trees don't have core PD, and thus, there are + * no dependencies that will block the state syncing. We shouldn't + * mark the domain as synced in this case. + */ + if (!pmc->core_domain_registered) + return; + + pmc->core_domain_state_synced = true; + + /* this is a no-op if core regulator isn't used */ + mutex_lock(&pmc->powergates_lock); + err = dev_pm_opp_sync_regulators(dev); + mutex_unlock(&pmc->powergates_lock); + + if (err) + dev_err(dev, "failed to sync regulators: %d\n", err); +} + static struct platform_driver tegra_pmc_driver = { .driver = { .name = "tegra-pmc", @@ -3790,6 +3823,7 @@ static struct platform_driver tegra_pmc_driver = { #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM) .pm = &tegra_pmc_pm_ops, #endif + .sync_state = tegra_pmc_sync_state, }, .probe = tegra_pmc_probe, }; |