diff options
| author | Jonghwa Lee <jonghwa3.lee@samsung.com> | 2015-08-07 23:17:16 +0900 |
|---|---|---|
| committer | Seung-Woo Kim <sw0312.kim@samsung.com> | 2016-12-14 13:47:05 +0900 |
| commit | e7b6ff3483825916f05db8d53bc1b708b8b7523f (patch) | |
| tree | 0c96c4039a6c9e06835a61b980afd8efc42f58aa /drivers | |
| parent | 0f2f3c13e883d7c1aaeea46f29112b43243cfc7b (diff) | |
soc: samsung: pm_domain: Support pm_domain creation notification.
For some drivers which is probed earlier than pm_domain creation,
it provides a interface to get notification.
Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/soc/samsung/pm_domains.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/drivers/soc/samsung/pm_domains.c b/drivers/soc/samsung/pm_domains.c index 38d3df1ce12a..4b36f2b00565 100644 --- a/drivers/soc/samsung/pm_domains.c +++ b/drivers/soc/samsung/pm_domains.c @@ -46,28 +46,36 @@ struct exynos_pm_domain { u32 local_pwr_cfg; }; +static BLOCKING_NOTIFIER_HEAD(exynos_pd_nh); + int exynos_pd_notifier_register(struct generic_pm_domain *domain, struct notifier_block *nb) { struct exynos_pm_domain *pd; - if (!domain || !nb) + if (!nb) return -EINVAL; + if (!domain) + return blocking_notifier_chain_register(&exynos_pd_nh, nb); + pd = container_of(domain, struct exynos_pm_domain, pd); return atomic_notifier_chain_register(&pd->nh, nb); } -void exynos_pd_notifier_unregister(struct generic_pm_domain *domain, +int exynos_pd_notifier_unregister(struct generic_pm_domain *domain, struct notifier_block *nb) { struct exynos_pm_domain *pd; - if (!domain || !nb) - return; + if (!nb) + return -EINVAL; + + if (!domain) + return blocking_notifier_chain_unregister(&exynos_pd_nh, nb); pd = container_of(domain, struct exynos_pm_domain, pd); - atomic_notifier_chain_unregister(&pd->nh, nb); + return atomic_notifier_chain_unregister(&pd->nh, nb); } static void exynos_pd_notify_pre(struct exynos_pm_domain *pd, bool power_on) @@ -252,6 +260,9 @@ static __init int exynos4_pm_init_power_domain(void) pm_genpd_init(&pd->pd, NULL, !on); of_genpd_add_provider_simple(np, &pd->pd); + + blocking_notifier_call_chain(&exynos_pd_nh, + EXYNOS_PD_ADD, &pd->pd); } /* Assign the child power domains to their parents */ |