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Message-Id: <1445347589-5626-2-git-send-email-ahaslam@baylibre.com>
Date: Tue, 20 Oct 2015 15:26:24 +0200
From: ahaslam@...libre.com
To: khilman@...aro.org, ulf.hansson@...aro.org, lina.iyer@...aro.org,
geert@...der.be, k.kozlowski.k@...il.com, rjw@...ysocki.net,
linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: bcousson@...libre.com, mturquette@...libre.com,
Axel Haslam <ahaslam+renesas@...libre.com>
Subject: [PATCH v10 1/6] PM / Domains: prepare for multiple states
From: Axel Haslam <ahaslam+renesas@...libre.com>
prepare generic power domain init function parameters to accept a pointer
to the states structure that describes the possible states that a power
domain can enter.
Also, as most platforms are not initializing states or latencies, add
pm_genpd_init_simple that allows platfroms to use a default single OFF
state with initial latencies set to 0.
There is no functional change, as support for multiple domains will be
added in subsequent patches.
Suggested-by: Lina Iyer <lina.iyer@...aro.org>
Signed-off-by: Axel Haslam <ahaslam+renesas@...libre.com>
---
arch/arm/mach-exynos/pm_domains.c | 2 +-
arch/arm/mach-imx/gpc.c | 2 +-
arch/arm/mach-s3c64xx/pm.c | 4 ++--
arch/arm/mach-shmobile/pm-rmobile.c | 2 +-
arch/arm/mach-ux500/pm_domains.c | 2 +-
arch/arm/mach-zx/zx296702-pm-domain.c | 2 +-
drivers/base/power/domain.c | 19 ++++++++++++++++++-
drivers/clk/qcom/gdsc.c | 2 +-
drivers/clk/shmobile/clk-mstp.c | 2 +-
drivers/soc/dove/pmu.c | 2 +-
drivers/soc/mediatek/mtk-scpsys.c | 2 +-
drivers/soc/rockchip/pm_domains.c | 2 +-
include/linux/pm_domain.h | 27 ++++++++++++++++++++++++++-
13 files changed, 56 insertions(+), 14 deletions(-)
diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c
index 7c21760..dc36723 100644
--- a/arch/arm/mach-exynos/pm_domains.c
+++ b/arch/arm/mach-exynos/pm_domains.c
@@ -187,7 +187,7 @@ static __init int exynos4_pm_init_power_domain(void)
no_clk:
on = __raw_readl(pd->base + 0x4) & INT_LOCAL_PWR_EN;
- pm_genpd_init(&pd->pd, NULL, !on);
+ pm_genpd_init_simple(&pd->pd, NULL, !on);
of_genpd_add_provider_simple(np, &pd->pd);
}
diff --git a/arch/arm/mach-imx/gpc.c b/arch/arm/mach-imx/gpc.c
index 10bf715..aefe92d 100644
--- a/arch/arm/mach-imx/gpc.c
+++ b/arch/arm/mach-imx/gpc.c
@@ -422,7 +422,7 @@ static int imx_gpc_genpd_init(struct device *dev, struct regulator *pu_reg)
if (!IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS))
return 0;
- pm_genpd_init(&imx6q_pu_domain.base, NULL, false);
+ pm_genpd_init_simple(&imx6q_pu_domain.base, NULL, false);
return of_genpd_add_provider_onecell(dev->of_node,
&imx_gpc_onecell_data);
diff --git a/arch/arm/mach-s3c64xx/pm.c b/arch/arm/mach-s3c64xx/pm.c
index 75b14e7..d68a45c 100644
--- a/arch/arm/mach-s3c64xx/pm.c
+++ b/arch/arm/mach-s3c64xx/pm.c
@@ -316,11 +316,11 @@ int __init s3c64xx_pm_init(void)
s3c_pm_init();
for (i = 0; i < ARRAY_SIZE(s3c64xx_always_on_pm_domains); i++)
- pm_genpd_init(&s3c64xx_always_on_pm_domains[i]->pd,
+ pm_genpd_init_simple(&s3c64xx_always_on_pm_domains[i]->pd,
&pm_domain_always_on_gov, false);
for (i = 0; i < ARRAY_SIZE(s3c64xx_pm_domains); i++)
- pm_genpd_init(&s3c64xx_pm_domains[i]->pd, NULL, false);
+ pm_genpd_init_simple(&s3c64xx_pm_domains[i]->pd, NULL, false);
#ifdef CONFIG_S3C_DEV_FB
if (dev_get_platdata(&s3c_device_fb.dev))
diff --git a/arch/arm/mach-shmobile/pm-rmobile.c b/arch/arm/mach-shmobile/pm-rmobile.c
index 46d0a1d..906a2eb 100644
--- a/arch/arm/mach-shmobile/pm-rmobile.c
+++ b/arch/arm/mach-shmobile/pm-rmobile.c
@@ -131,7 +131,7 @@ static void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd)
struct dev_power_governor *gov = rmobile_pd->gov;
genpd->flags = GENPD_FLAG_PM_CLK;
- pm_genpd_init(genpd, gov ? : &simple_qos_governor, false);
+ pm_genpd_init_simple(genpd, gov ? : &simple_qos_governor, false);
genpd->dev_ops.active_wakeup = rmobile_pd_active_wakeup;
genpd->power_off = rmobile_pd_power_down;
genpd->power_on = rmobile_pd_power_up;
diff --git a/arch/arm/mach-ux500/pm_domains.c b/arch/arm/mach-ux500/pm_domains.c
index 4d71c90..208e784 100644
--- a/arch/arm/mach-ux500/pm_domains.c
+++ b/arch/arm/mach-ux500/pm_domains.c
@@ -72,7 +72,7 @@ int __init ux500_pm_domains_init(void)
genpd_data->num_domains = ARRAY_SIZE(ux500_pm_domains);
for (i = 0; i < ARRAY_SIZE(ux500_pm_domains); ++i)
- pm_genpd_init(ux500_pm_domains[i], NULL, false);
+ pm_genpd_init_simple(ux500_pm_domains[i], NULL, false);
of_genpd_add_provider_onecell(np, genpd_data);
return 0;
diff --git a/arch/arm/mach-zx/zx296702-pm-domain.c b/arch/arm/mach-zx/zx296702-pm-domain.c
index e08574d..0ec8f0c 100644
--- a/arch/arm/mach-zx/zx296702-pm-domain.c
+++ b/arch/arm/mach-zx/zx296702-pm-domain.c
@@ -175,7 +175,7 @@ static int zx296702_pd_probe(struct platform_device *pdev)
}
for (i = 0; i < ARRAY_SIZE(zx296702_pm_domains); ++i)
- pm_genpd_init(zx296702_pm_domains[i], NULL, false);
+ pm_genpd_init_simple(zx296702_pm_domains[i], NULL, false);
of_genpd_add_provider_onecell(pdev->dev.of_node, genpd_data);
return 0;
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index b0b5c43..e0b5229 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1447,10 +1447,14 @@ static int pm_genpd_default_restore_state(struct device *dev)
* pm_genpd_init - Initialize a generic I/O PM domain object.
* @genpd: PM domain object to initialize.
* @gov: PM domain governor to associate with the domain (may be NULL).
+ * @states: Array of possible low power states when powering off.
+ * @state_count: Number of low power states.
* @is_off: Initial value of the domain's power_is_off field.
*/
void pm_genpd_init(struct generic_pm_domain *genpd,
- struct dev_power_governor *gov, bool is_off)
+ struct dev_power_governor *gov,
+ const struct genpd_power_state *states,
+ unsigned int state_count, bool is_off)
{
if (IS_ERR_OR_NULL(genpd))
return;
@@ -1502,6 +1506,19 @@ void pm_genpd_init(struct generic_pm_domain *genpd,
}
EXPORT_SYMBOL_GPL(pm_genpd_init);
+/**
+ * pm_genpd_init_simple - Initialize a generic I/O PM domain object.
+ * @genpd: PM domain object to initialize.
+ * @gov: PM domain governor to associate with the domain (may be NULL).
+ * @is_off: Initial value of the domain's power_is_off field.
+ */
+void pm_genpd_init_simple(struct generic_pm_domain *genpd,
+ struct dev_power_governor *gov, bool is_off)
+{
+ pm_genpd_init(genpd, gov, NULL, 0, is_off);
+}
+EXPORT_SYMBOL_GPL(pm_genpd_init_simple);
+
#ifdef CONFIG_PM_GENERIC_DOMAINS_OF
/*
* Device Tree based PM domain providers.
diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c
index da9fad8..b709bf3 100644
--- a/drivers/clk/qcom/gdsc.c
+++ b/drivers/clk/qcom/gdsc.c
@@ -196,7 +196,7 @@ static int gdsc_init(struct gdsc *sc)
sc->pd.power_off = gdsc_disable;
sc->pd.power_on = gdsc_enable;
- pm_genpd_init(&sc->pd, NULL, !on);
+ pm_genpd_init_simple(&sc->pd, NULL, !on);
return 0;
}
diff --git a/drivers/clk/shmobile/clk-mstp.c b/drivers/clk/shmobile/clk-mstp.c
index 3b09716..1f18474 100644
--- a/drivers/clk/shmobile/clk-mstp.c
+++ b/drivers/clk/shmobile/clk-mstp.c
@@ -320,7 +320,7 @@ void __init cpg_mstp_add_clk_domain(struct device_node *np)
pd->name = np->name;
pd->flags = GENPD_FLAG_PM_CLK;
- pm_genpd_init(pd, &simple_qos_governor, false);
+ pm_genpd_init_simple(pd, &simple_qos_governor, false);
pd->attach_dev = cpg_mstp_attach_dev;
pd->detach_dev = cpg_mstp_detach_dev;
diff --git a/drivers/soc/dove/pmu.c b/drivers/soc/dove/pmu.c
index abd0879..42adc16 100644
--- a/drivers/soc/dove/pmu.c
+++ b/drivers/soc/dove/pmu.c
@@ -215,7 +215,7 @@ static void __pmu_domain_register(struct pmu_domain *domain,
domain->base.power_off = pmu_domain_power_off;
domain->base.power_on = pmu_domain_power_on;
- pm_genpd_init(&domain->base, NULL, !(val & domain->pwr_mask));
+ pm_genpd_init_simple(&domain->base, NULL, !(val & domain->pwr_mask));
if (np)
of_genpd_add_provider_simple(np, &domain->base);
diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c
index 164a7d8..adf364f 100644
--- a/drivers/soc/mediatek/mtk-scpsys.c
+++ b/drivers/soc/mediatek/mtk-scpsys.c
@@ -443,7 +443,7 @@ static int __init scpsys_probe(struct platform_device *pdev)
*/
genpd->power_on(genpd);
- pm_genpd_init(genpd, NULL, false);
+ pm_genpd_init_simple(genpd, NULL, false);
}
/*
diff --git a/drivers/soc/rockchip/pm_domains.c b/drivers/soc/rockchip/pm_domains.c
index 534c589..617e219 100644
--- a/drivers/soc/rockchip/pm_domains.c
+++ b/drivers/soc/rockchip/pm_domains.c
@@ -299,7 +299,7 @@ static int rockchip_pm_add_one_domain(struct rockchip_pmu *pmu,
pd->genpd.attach_dev = rockchip_pd_attach_dev;
pd->genpd.detach_dev = rockchip_pd_detach_dev;
pd->genpd.flags = GENPD_FLAG_PM_CLK;
- pm_genpd_init(&pd->genpd, NULL, false);
+ pm_genpd_init_simple(&pd->genpd, NULL, false);
pmu->genpd_data.domains[id] = &pd->genpd;
return 0;
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index f4dd810..f37faec 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -37,6 +37,17 @@ struct gpd_dev_ops {
bool (*active_wakeup)(struct device *dev);
};
+struct gpd_cpuidle_data {
+ unsigned int saved_exit_latency;
+ struct cpuidle_state *idle_state;
+};
+
+struct genpd_power_state {
+ char *name;
+ s64 power_off_latency_ns;
+ s64 power_on_latency_ns;
+};
+
struct generic_pm_domain {
struct dev_pm_domain domain; /* PM domain operations */
struct list_head gpd_list_node; /* Node in the global PM domains list */
@@ -124,7 +135,14 @@ extern int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
struct generic_pm_domain *target);
extern void pm_genpd_init(struct generic_pm_domain *genpd,
+ struct dev_power_governor *gov,
+ const struct genpd_power_state *states,
+ unsigned int state_count, bool is_off);
+extern void pm_genpd_init_simple(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off);
+extern int pm_genpd_poweron(struct generic_pm_domain *genpd);
+extern int pm_genpd_name_poweron(const char *domain_name);
+extern void pm_genpd_poweroff_unused(void);
extern struct dev_power_governor simple_qos_governor;
extern struct dev_power_governor pm_domain_always_on_gov;
@@ -160,7 +178,14 @@ static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
return -ENOSYS;
}
static inline void pm_genpd_init(struct generic_pm_domain *genpd,
- struct dev_power_governor *gov, bool is_off)
+ struct dev_power_governor *gov,
+ const struct genpd_power_state *states,
+ unsigned int state_count, bool is_off)
+{
+}
+static inline void pm_genpd_init_simple(struct generic_pm_domain *genpd,
+ struct dev_power_governor *gov,
+ bool is_off)
{
}
#endif
--
2.4.5
--
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