* [PATCH] ARM: tegra114: cpuidle: add ARM_CPUIDLE_WFI_STATE support
@ 2013-01-21 9:49 ` Joseph Lo
0 siblings, 0 replies; 8+ messages in thread
From: Joseph Lo @ 2013-01-21 9:49 UTC (permalink / raw)
To: Stephen Warren
Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r, Joseph Lo
Adding the generic ARM_CPUIDLE_WFI_STATE support for Tegra114.
Signed-off-by: Joseph Lo <josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
---
arch/arm/mach-tegra/Makefile | 3 ++
arch/arm/mach-tegra/cpuidle-tegra114.c | 61 ++++++++++++++++++++++++++++++++++
arch/arm/mach-tegra/cpuidle.c | 3 ++
arch/arm/mach-tegra/cpuidle.h | 6 ++++
4 files changed, 73 insertions(+)
create mode 100644 arch/arm/mach-tegra/cpuidle-tegra114.c
diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
index 219c2ed..1335aac 100644
--- a/arch/arm/mach-tegra/Makefile
+++ b/arch/arm/mach-tegra/Makefile
@@ -34,6 +34,9 @@ obj-$(CONFIG_TEGRA_PCI) += pcie.o
obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += board-dt-tegra20.o
obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += board-dt-tegra30.o
obj-$(CONFIG_ARCH_TEGRA_114_SOC) += board-dt-tegra114.o
+ifeq ($(CONFIG_CPU_IDLE),y)
+obj-$(CONFIG_ARCH_TEGRA_114_SOC) += cpuidle-tegra114.o
+endif
obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += board-harmony-pcie.o
diff --git a/arch/arm/mach-tegra/cpuidle-tegra114.c b/arch/arm/mach-tegra/cpuidle-tegra114.c
new file mode 100644
index 0000000..0f4e8c4
--- /dev/null
+++ b/arch/arm/mach-tegra/cpuidle-tegra114.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2013, NVIDIA Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/cpuidle.h>
+
+#include <asm/cpuidle.h>
+
+static struct cpuidle_driver tegra_idle_driver = {
+ .name = "tegra_idle",
+ .owner = THIS_MODULE,
+ .en_core_tk_irqen = 1,
+ .state_count = 1,
+ .states = {
+ [0] = ARM_CPUIDLE_WFI_STATE_PWR(600),
+ },
+};
+
+static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device);
+
+int __init tegra114_cpuidle_init(void)
+{
+ int ret;
+ unsigned int cpu;
+ struct cpuidle_device *dev;
+ struct cpuidle_driver *drv = &tegra_idle_driver;
+
+ ret = cpuidle_register_driver(&tegra_idle_driver);
+ if (ret) {
+ pr_err("CPUidle driver registration failed\n");
+ return ret;
+ }
+
+ for_each_possible_cpu(cpu) {
+ dev = &per_cpu(tegra_idle_device, cpu);
+ dev->cpu = cpu;
+
+ dev->state_count = drv->state_count;
+ ret = cpuidle_register_device(dev);
+ if (ret) {
+ pr_err("CPU%u: CPUidle device registration failed\n",
+ cpu);
+ return ret;
+ }
+ }
+ return 0;
+}
diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle.c
index d065139..4b744c4 100644
--- a/arch/arm/mach-tegra/cpuidle.c
+++ b/arch/arm/mach-tegra/cpuidle.c
@@ -38,6 +38,9 @@ static int __init tegra_cpuidle_init(void)
case TEGRA30:
ret = tegra30_cpuidle_init();
break;
+ case TEGRA114:
+ ret = tegra114_cpuidle_init();
+ break;
default:
ret = -ENODEV;
break;
diff --git a/arch/arm/mach-tegra/cpuidle.h b/arch/arm/mach-tegra/cpuidle.h
index 496204d..d733f75 100644
--- a/arch/arm/mach-tegra/cpuidle.h
+++ b/arch/arm/mach-tegra/cpuidle.h
@@ -29,4 +29,10 @@ int tegra30_cpuidle_init(void);
static inline int tegra30_cpuidle_init(void) { return -ENODEV; }
#endif
+#ifdef CONFIG_ARCH_TEGRA_114_SOC
+int tegra114_cpuidle_init(void);
+#else
+static inline int tegra114_cpuidle_init(void) { return -ENODEV; }
+#endif
+
#endif
--
1.8.0.3
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH] ARM: tegra114: cpuidle: add ARM_CPUIDLE_WFI_STATE support
@ 2013-01-21 9:49 ` Joseph Lo
0 siblings, 0 replies; 8+ messages in thread
From: Joseph Lo @ 2013-01-21 9:49 UTC (permalink / raw)
To: linux-arm-kernel
Adding the generic ARM_CPUIDLE_WFI_STATE support for Tegra114.
Signed-off-by: Joseph Lo <josephl@nvidia.com>
---
arch/arm/mach-tegra/Makefile | 3 ++
arch/arm/mach-tegra/cpuidle-tegra114.c | 61 ++++++++++++++++++++++++++++++++++
arch/arm/mach-tegra/cpuidle.c | 3 ++
arch/arm/mach-tegra/cpuidle.h | 6 ++++
4 files changed, 73 insertions(+)
create mode 100644 arch/arm/mach-tegra/cpuidle-tegra114.c
diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
index 219c2ed..1335aac 100644
--- a/arch/arm/mach-tegra/Makefile
+++ b/arch/arm/mach-tegra/Makefile
@@ -34,6 +34,9 @@ obj-$(CONFIG_TEGRA_PCI) += pcie.o
obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += board-dt-tegra20.o
obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += board-dt-tegra30.o
obj-$(CONFIG_ARCH_TEGRA_114_SOC) += board-dt-tegra114.o
+ifeq ($(CONFIG_CPU_IDLE),y)
+obj-$(CONFIG_ARCH_TEGRA_114_SOC) += cpuidle-tegra114.o
+endif
obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += board-harmony-pcie.o
diff --git a/arch/arm/mach-tegra/cpuidle-tegra114.c b/arch/arm/mach-tegra/cpuidle-tegra114.c
new file mode 100644
index 0000000..0f4e8c4
--- /dev/null
+++ b/arch/arm/mach-tegra/cpuidle-tegra114.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2013, NVIDIA Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/cpuidle.h>
+
+#include <asm/cpuidle.h>
+
+static struct cpuidle_driver tegra_idle_driver = {
+ .name = "tegra_idle",
+ .owner = THIS_MODULE,
+ .en_core_tk_irqen = 1,
+ .state_count = 1,
+ .states = {
+ [0] = ARM_CPUIDLE_WFI_STATE_PWR(600),
+ },
+};
+
+static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device);
+
+int __init tegra114_cpuidle_init(void)
+{
+ int ret;
+ unsigned int cpu;
+ struct cpuidle_device *dev;
+ struct cpuidle_driver *drv = &tegra_idle_driver;
+
+ ret = cpuidle_register_driver(&tegra_idle_driver);
+ if (ret) {
+ pr_err("CPUidle driver registration failed\n");
+ return ret;
+ }
+
+ for_each_possible_cpu(cpu) {
+ dev = &per_cpu(tegra_idle_device, cpu);
+ dev->cpu = cpu;
+
+ dev->state_count = drv->state_count;
+ ret = cpuidle_register_device(dev);
+ if (ret) {
+ pr_err("CPU%u: CPUidle device registration failed\n",
+ cpu);
+ return ret;
+ }
+ }
+ return 0;
+}
diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle.c
index d065139..4b744c4 100644
--- a/arch/arm/mach-tegra/cpuidle.c
+++ b/arch/arm/mach-tegra/cpuidle.c
@@ -38,6 +38,9 @@ static int __init tegra_cpuidle_init(void)
case TEGRA30:
ret = tegra30_cpuidle_init();
break;
+ case TEGRA114:
+ ret = tegra114_cpuidle_init();
+ break;
default:
ret = -ENODEV;
break;
diff --git a/arch/arm/mach-tegra/cpuidle.h b/arch/arm/mach-tegra/cpuidle.h
index 496204d..d733f75 100644
--- a/arch/arm/mach-tegra/cpuidle.h
+++ b/arch/arm/mach-tegra/cpuidle.h
@@ -29,4 +29,10 @@ int tegra30_cpuidle_init(void);
static inline int tegra30_cpuidle_init(void) { return -ENODEV; }
#endif
+#ifdef CONFIG_ARCH_TEGRA_114_SOC
+int tegra114_cpuidle_init(void);
+#else
+static inline int tegra114_cpuidle_init(void) { return -ENODEV; }
+#endif
+
#endif
--
1.8.0.3
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [PATCH] ARM: tegra114: cpuidle: add ARM_CPUIDLE_WFI_STATE support
2013-01-21 9:49 ` Joseph Lo
@ 2013-01-21 17:18 ` Stephen Warren
-1 siblings, 0 replies; 8+ messages in thread
From: Stephen Warren @ 2013-01-21 17:18 UTC (permalink / raw)
To: Joseph Lo
Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r
On 01/21/2013 02:49 AM, Joseph Lo wrote:
> Adding the generic ARM_CPUIDLE_WFI_STATE support for Tegra114.
This of course depends on Hiroshi's Tegra114 patches, right; you should
explicitly point out any dependencies when posting patches.
The code changes look reasonable, but of course I'll hold off applying
it until the Tegra114 support is checked in.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH] ARM: tegra114: cpuidle: add ARM_CPUIDLE_WFI_STATE support
@ 2013-01-21 17:18 ` Stephen Warren
0 siblings, 0 replies; 8+ messages in thread
From: Stephen Warren @ 2013-01-21 17:18 UTC (permalink / raw)
To: linux-arm-kernel
On 01/21/2013 02:49 AM, Joseph Lo wrote:
> Adding the generic ARM_CPUIDLE_WFI_STATE support for Tegra114.
This of course depends on Hiroshi's Tegra114 patches, right; you should
explicitly point out any dependencies when posting patches.
The code changes look reasonable, but of course I'll hold off applying
it until the Tegra114 support is checked in.
^ permalink raw reply [flat|nested] 8+ messages in thread
* RE: [PATCH] ARM: tegra114: cpuidle: add ARM_CPUIDLE_WFI_STATE support
2013-01-21 17:18 ` Stephen Warren
@ 2013-01-22 0:43 ` Joseph Lo
-1 siblings, 0 replies; 8+ messages in thread
From: Joseph Lo @ 2013-01-22 0:43 UTC (permalink / raw)
To: Stephen Warren
Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r
On Tue, Jan 22, 2013 at 01:18:46, Stephen Warren wrote:
> On 01/21/2013 02:49 AM, Joseph Lo wrote:
> > Adding the generic ARM_CPUIDLE_WFI_STATE support for Tegra114.
>
> This of course depends on Hiroshi's Tegra114 patches, right; you
> should explicitly point out any dependencies when posting patches.
>
> The code changes look reasonable, but of course I'll hold off applying
> it until the Tegra114 support is checked in.
Yes, thanks for taking care.
Joseph
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH] ARM: tegra114: cpuidle: add ARM_CPUIDLE_WFI_STATE support
@ 2013-01-22 0:43 ` Joseph Lo
0 siblings, 0 replies; 8+ messages in thread
From: Joseph Lo @ 2013-01-22 0:43 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, Jan 22, 2013 at 01:18:46, Stephen Warren wrote:
> On 01/21/2013 02:49 AM, Joseph Lo wrote:
> > Adding the generic ARM_CPUIDLE_WFI_STATE support for Tegra114.
>
> This of course depends on Hiroshi's Tegra114 patches, right; you
> should explicitly point out any dependencies when posting patches.
>
> The code changes look reasonable, but of course I'll hold off applying
> it until the Tegra114 support is checked in.
Yes, thanks for taking care.
Joseph
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH] ARM: tegra114: cpuidle: add ARM_CPUIDLE_WFI_STATE support
2013-01-21 9:49 ` Joseph Lo
@ 2013-01-28 19:00 ` Stephen Warren
-1 siblings, 0 replies; 8+ messages in thread
From: Stephen Warren @ 2013-01-28 19:00 UTC (permalink / raw)
To: Joseph Lo
Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r
On 01/21/2013 02:49 AM, Joseph Lo wrote:
> Adding the generic ARM_CPUIDLE_WFI_STATE support for Tegra114.
I've applied this to Tegra's for-3.9/soc-t114 branch.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH] ARM: tegra114: cpuidle: add ARM_CPUIDLE_WFI_STATE support
@ 2013-01-28 19:00 ` Stephen Warren
0 siblings, 0 replies; 8+ messages in thread
From: Stephen Warren @ 2013-01-28 19:00 UTC (permalink / raw)
To: linux-arm-kernel
On 01/21/2013 02:49 AM, Joseph Lo wrote:
> Adding the generic ARM_CPUIDLE_WFI_STATE support for Tegra114.
I've applied this to Tegra's for-3.9/soc-t114 branch.
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2013-01-28 19:00 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
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2013-01-21 9:49 [PATCH] ARM: tegra114: cpuidle: add ARM_CPUIDLE_WFI_STATE support Joseph Lo
2013-01-21 9:49 ` Joseph Lo
[not found] ` <1358761746-13118-1-git-send-email-josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-01-21 17:18 ` Stephen Warren
2013-01-21 17:18 ` Stephen Warren
[not found] ` <50FD7876.4010306-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-01-22 0:43 ` Joseph Lo
2013-01-22 0:43 ` Joseph Lo
2013-01-28 19:00 ` Stephen Warren
2013-01-28 19:00 ` Stephen Warren
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