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From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
	Jonathan Hunter <jonathanh@nvidia.com>,
	Peter De Schrijver <pdeschrijver@nvidia.com>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-pm@vger.kernel.org, linux-tegra@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v4 07/13] ARM: tegra: Add tegra_pm_park_secondary_cpu()
Date: Tue, 30 Jul 2019 20:09:49 +0300	[thread overview]
Message-ID: <20190730170955.11987-8-digetx@gmail.com> (raw)
In-Reply-To: <20190730170955.11987-1-digetx@gmail.com>

This function resembles tegra_cpu_die() of the hotplug code, but
this variant is more suitable to be used for CPU PM because it's made
specifically to be used by cpu_suspend(). In short this function puts
secondary CPU offline, it will be used by the new CPUIDLE driver.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 arch/arm/mach-tegra/pm.c | 14 ++++++++++++++
 include/soc/tegra/pm.h   |  6 ++++++
 2 files changed, 20 insertions(+)

diff --git a/arch/arm/mach-tegra/pm.c b/arch/arm/mach-tegra/pm.c
index 4cc64a135a3e..7d9ef26e52a7 100644
--- a/arch/arm/mach-tegra/pm.c
+++ b/arch/arm/mach-tegra/pm.c
@@ -427,4 +427,18 @@ void __init tegra_init_suspend(void)
 
 	suspend_set_ops(&tegra_suspend_ops);
 }
+
+int tegra_pm_park_secondary_cpu(unsigned long cpu)
+{
+	if (cpu > 0) {
+		tegra_disable_clean_inv_dcache(TEGRA_FLUSH_CACHE_LOUIS);
+
+		if (tegra_get_chip_id() == TEGRA20)
+			tegra20_hotplug_shutdown();
+		else
+			tegra30_hotplug_shutdown();
+	}
+
+	return -EINVAL;
+}
 #endif
diff --git a/include/soc/tegra/pm.h b/include/soc/tegra/pm.h
index 2fbee9efda21..08477d7bfab9 100644
--- a/include/soc/tegra/pm.h
+++ b/include/soc/tegra/pm.h
@@ -27,6 +27,7 @@ int tegra30_pm_secondary_cpu_suspend(unsigned long arg);
 void tegra_pm_clear_cpu_in_lp2(void);
 void tegra_pm_set_cpu_in_lp2(void);
 int tegra_pm_enter_lp2(void);
+int tegra_pm_park_secondary_cpu(unsigned long cpu);
 #else
 static inline enum tegra_suspend_mode
 tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode)
@@ -55,6 +56,11 @@ static inline int tegra_pm_enter_lp2(void)
 {
 	return -ENOTSUPP;
 }
+
+static inline int tegra_pm_park_secondary_cpu(unsigned long cpu)
+{
+	return -ENOTSUPP;
+}
 #endif /* CONFIG_PM_SLEEP */
 
 #endif /* __SOC_TEGRA_PM_H__ */
-- 
2.22.0


WARNING: multiple messages have this Message-ID (diff)
From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
	Jonathan Hunter <jonathanh@nvidia.com>,
	Peter De Schrijver <pdeschrijver@nvidia.com>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org
Subject: [PATCH v4 07/13] ARM: tegra: Add tegra_pm_park_secondary_cpu()
Date: Tue, 30 Jul 2019 20:09:49 +0300	[thread overview]
Message-ID: <20190730170955.11987-8-digetx@gmail.com> (raw)
In-Reply-To: <20190730170955.11987-1-digetx@gmail.com>

This function resembles tegra_cpu_die() of the hotplug code, but
this variant is more suitable to be used for CPU PM because it's made
specifically to be used by cpu_suspend(). In short this function puts
secondary CPU offline, it will be used by the new CPUIDLE driver.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 arch/arm/mach-tegra/pm.c | 14 ++++++++++++++
 include/soc/tegra/pm.h   |  6 ++++++
 2 files changed, 20 insertions(+)

diff --git a/arch/arm/mach-tegra/pm.c b/arch/arm/mach-tegra/pm.c
index 4cc64a135a3e..7d9ef26e52a7 100644
--- a/arch/arm/mach-tegra/pm.c
+++ b/arch/arm/mach-tegra/pm.c
@@ -427,4 +427,18 @@ void __init tegra_init_suspend(void)
 
 	suspend_set_ops(&tegra_suspend_ops);
 }
+
+int tegra_pm_park_secondary_cpu(unsigned long cpu)
+{
+	if (cpu > 0) {
+		tegra_disable_clean_inv_dcache(TEGRA_FLUSH_CACHE_LOUIS);
+
+		if (tegra_get_chip_id() == TEGRA20)
+			tegra20_hotplug_shutdown();
+		else
+			tegra30_hotplug_shutdown();
+	}
+
+	return -EINVAL;
+}
 #endif
diff --git a/include/soc/tegra/pm.h b/include/soc/tegra/pm.h
index 2fbee9efda21..08477d7bfab9 100644
--- a/include/soc/tegra/pm.h
+++ b/include/soc/tegra/pm.h
@@ -27,6 +27,7 @@ int tegra30_pm_secondary_cpu_suspend(unsigned long arg);
 void tegra_pm_clear_cpu_in_lp2(void);
 void tegra_pm_set_cpu_in_lp2(void);
 int tegra_pm_enter_lp2(void);
+int tegra_pm_park_secondary_cpu(unsigned long cpu);
 #else
 static inline enum tegra_suspend_mode
 tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode)
@@ -55,6 +56,11 @@ static inline int tegra_pm_enter_lp2(void)
 {
 	return -ENOTSUPP;
 }
+
+static inline int tegra_pm_park_secondary_cpu(unsigned long cpu)
+{
+	return -ENOTSUPP;
+}
 #endif /* CONFIG_PM_SLEEP */
 
 #endif /* __SOC_TEGRA_PM_H__ */
-- 
2.22.0


_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2019-07-30 17:10 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-30 17:09 [PATCH v4 00/13] Consolidate and improve NVIDIA Tegra CPUIDLE driver(s) Dmitry Osipenko
2019-07-30 17:09 ` Dmitry Osipenko
2019-07-30 17:09 ` [PATCH v4 01/13] ARM: tegra: Remove cpuidle drivers to replace them with a new driver Dmitry Osipenko
2019-07-30 17:09   ` Dmitry Osipenko
2019-07-30 17:09 ` [PATCH v4 02/13] ARM: tegra: Change tegra_set_cpu_in_lp2() type to void Dmitry Osipenko
2019-07-30 17:09   ` Dmitry Osipenko
2019-07-30 17:09 ` [PATCH v4 03/13] ARM: tegra: Propagate error from tegra_idle_lp2_last() Dmitry Osipenko
2019-07-30 17:09   ` Dmitry Osipenko
2019-07-30 17:09   ` Dmitry Osipenko
2019-07-30 17:09 ` [PATCH v4 04/13] ARM: tegra: Compile sleep-tegra20/30.S unconditionally Dmitry Osipenko
2019-07-30 17:09   ` Dmitry Osipenko
2019-07-30 17:09 ` [PATCH v4 05/13] ARM: tegra: Expose PM functions required for new cpuidle driver Dmitry Osipenko
2019-07-30 17:09   ` Dmitry Osipenko
2019-07-30 17:09 ` [PATCH v4 06/13] ARM: tegra: Rename some of the newly exposed PM functions Dmitry Osipenko
2019-07-30 17:09   ` Dmitry Osipenko
2019-07-30 17:09 ` Dmitry Osipenko [this message]
2019-07-30 17:09   ` [PATCH v4 07/13] ARM: tegra: Add tegra_pm_park_secondary_cpu() Dmitry Osipenko
2019-07-30 17:09 ` [PATCH v4 08/13] clk: tegra: Add missing stubs for the case of !CONFIG_PM_SLEEP Dmitry Osipenko
2019-07-30 17:09   ` Dmitry Osipenko
2019-07-30 17:09 ` [PATCH v4 09/13] cpuidle: Introduce unified driver for NVIDIA Tegra SoCs Dmitry Osipenko
2019-07-30 17:09   ` Dmitry Osipenko
2019-07-30 17:09 ` [PATCH v4 10/13] cpuidle: tegra: Support CPU cluster power-down state on Tegra30 Dmitry Osipenko
2019-07-30 17:09   ` Dmitry Osipenko
2019-07-30 17:09 ` [PATCH v4 11/13] ARM: tegra: Create simple platform device for cpuidle driver Dmitry Osipenko
2019-07-30 17:09   ` Dmitry Osipenko
2019-07-30 17:09 ` [PATCH v4 12/13] ARM: multi_v7_defconfig: Enable Tegra " Dmitry Osipenko
2019-07-30 17:09   ` Dmitry Osipenko
2019-07-30 17:09 ` [PATCH v4 13/13] ARM: tegra: Enable Tegra cpuidle driver in tegra_defconfig Dmitry Osipenko
2019-07-30 17:09   ` Dmitry Osipenko

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