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Date: Mon, 19 Oct 2015 19:40:35 +0200
From: Axel Haslam <ahaslam@...libre.com>
To: Lina Iyer <lina.iyer@...aro.org>
Cc: Kevin Hilman <khilman@...aro.org>,
Ulf Hansson <ulf.hansson@...aro.org>, geert@...der.be,
Krzysztof Kozłowski <k.kozlowski.k@...il.com>,
"Rafael J. Wysocki" <rjw@...ysocki.net>,
Linux PM list <linux-pm@...r.kernel.org>,
linux-kernel@...r.kernel.org,
Benoit Cousson <bcousson@...libre.com>,
Michael Turquette <mturquette@...libre.com>,
Axel Haslam <ahaslam+renesas@...libre.com>
Subject: Re: [PATCH v9 1/6] PM / Domains: prepare for multiple states
Hi Lina,
On Mon, Oct 19, 2015 at 6:35 PM, Lina Iyer <lina.iyer@...aro.org> wrote:
> Hi Axel,
>
> Thanks for rebasing.
>
> I ran into a compilation issue on ARM64 with defconfig.
>
> On Mon, Oct 19 2015 at 08:52 -0600, ahaslam@...libre.com wrote:
>>
>> 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-r8a7779.c | 2 +-
>> 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/shmobile/clk-mstp.c | 2 +-
>
>
> Change in drivers/clk/qcom/gdsc.c is missing.
Ouch.. Sorry, i accidentally used linux-next branch from linux-pm tree..
and i missed a couple of platfroms that recently started using
genpd's..ill repost v10 based on the real linux-next.. sorry again..
-Axel
>
> Thanks,
> Lina
>
>
>> drivers/soc/dove/pmu.c | 2 +-
>> drivers/soc/mediatek/mtk-scpsys.c | 2 +-
>> include/linux/pm_domain.h | 27 ++++++++++++++++++++++++++-
>> 12 files changed, 55 insertions(+), 13 deletions(-)
>>
>> diff --git a/arch/arm/mach-exynos/pm_domains.c
>> b/arch/arm/mach-exynos/pm_domains.c
>> index 4a87e86..a0abaa1 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 8c4467f..76658f8 100644
>> --- a/arch/arm/mach-imx/gpc.c
>> +++ b/arch/arm/mach-imx/gpc.c
>> @@ -419,7 +419,7 @@ 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-r8a7779.c
>> b/arch/arm/mach-shmobile/pm-r8a7779.c
>> index 47a862e..5eac8cd 100644
>> --- a/arch/arm/mach-shmobile/pm-r8a7779.c
>> +++ b/arch/arm/mach-shmobile/pm-r8a7779.c
>> @@ -84,7 +84,7 @@ static void r8a7779_init_pm_domain(struct
>> r8a7779_pm_domain *r8a7779_pd)
>> {
>> struct generic_pm_domain *genpd = &r8a7779_pd->genpd;
>>
>> - pm_genpd_init(genpd, NULL, false);
>> + pm_genpd_init_simple(genpd, NULL, false);
>> genpd->dev_ops.active_wakeup = pd_active_wakeup;
>> genpd->power_off = pd_power_down;
>> genpd->power_on = pd_power_up;
>> diff --git a/arch/arm/mach-shmobile/pm-rmobile.c
>> b/arch/arm/mach-shmobile/pm-rmobile.c
>> index a5b96b9..e1ca6e2 100644
>> --- a/arch/arm/mach-shmobile/pm-rmobile.c
>> +++ b/arch/arm/mach-shmobile/pm-rmobile.c
>> @@ -160,7 +160,7 @@ 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 6e1bcde..bb7f415 100644
>> --- a/drivers/base/power/domain.c
>> +++ b/drivers/base/power/domain.c
>> @@ -1445,10 +1445,14 @@ 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;
>> @@ -1500,6 +1504,19 @@ 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/shmobile/clk-mstp.c
>> b/drivers/clk/shmobile/clk-mstp.c
>> index b1df7b2..3c96157 100644
>> --- a/drivers/clk/shmobile/clk-mstp.c
>> +++ b/drivers/clk/shmobile/clk-mstp.c
>> @@ -316,7 +316,7 @@ 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/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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