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Merge branch 'cpuidle/arm-next' of git://git.linaro.org/people/dlezcano/linux 

Pull ARM cpuidle updates for v3.13 from Daniel Lezcano.

* 'cpuidle/arm-next' of git://git.linaro.org/people/dlezcano/linux:
  ARM: ux500: cpuidle: fix section mismatch
  ARM: zynq: cpuidle: convert to platform driver
  ARM: zynq: cpuidle: Remove useless compatibility string
  drivers: cpuidle: rename ARM big.LITTLE driver config and makefile entries
This commit is contained in:
Rafael J. Wysocki 2013-10-07 21:30:39 +02:00
parent d0e639c9e0 2c2b24d9c3
commit 494b244967
5 changed files with 30 additions and 19 deletions
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6
arch/arm/mach-zynq/common.c
View File

@ -44,6 +44,10 @@ static struct of_device_id zynq_of_bus_ids[] __initdata = {
{} {}
}; };
static struct platform_device zynq_cpuidle_device = {
.name = "cpuidle-zynq",
};
/** /**
* zynq_init_machine - System specific initialization, intended to be * zynq_init_machine - System specific initialization, intended to be
* called from board specific initialization. * called from board specific initialization.
@ -56,6 +60,8 @@ static void __init zynq_init_machine(void)
l2x0_of_init(0x02060000, 0xF0F0FFFF); l2x0_of_init(0x02060000, 0xF0F0FFFF);
of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL); of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL);
platform_device_register(&zynq_cpuidle_device);
} }
static void __init zynq_timer_init(void) static void __init zynq_timer_init(void)

22
drivers/cpuidle/Kconfig.arm
View File

@ -2,6 +2,17 @@
# ARM CPU Idle drivers # ARM CPU Idle drivers
# #
config ARM_BIG_LITTLE_CPUIDLE
bool "Support for ARM big.LITTLE processors"
depends on ARCH_VEXPRESS_TC2_PM
select ARM_CPU_SUSPEND
select CPU_IDLE_MULTIPLE_DRIVERS
help
Select this option to enable CPU idle driver for big.LITTLE based
ARM systems. Driver manages CPUs coordination through MCPM and
define different C-states for little and big cores through the
multiple CPU idle drivers infrastructure.
config ARM_HIGHBANK_CPUIDLE config ARM_HIGHBANK_CPUIDLE
bool "CPU Idle Driver for Calxeda processors" bool "CPU Idle Driver for Calxeda processors"
depends on ARCH_HIGHBANK depends on ARCH_HIGHBANK
@ -26,14 +37,3 @@ config ARM_U8500_CPUIDLE
depends on ARCH_U8500 depends on ARCH_U8500
help help
Select this to enable cpuidle for ST-E u8500 processors Select this to enable cpuidle for ST-E u8500 processors
config CPU_IDLE_BIG_LITTLE
bool "Support for ARM big.LITTLE processors"
depends on ARCH_VEXPRESS_TC2_PM
select ARM_CPU_SUSPEND
select CPU_IDLE_MULTIPLE_DRIVERS
help
Select this option to enable CPU idle driver for big.LITTLE based
ARM systems. Driver manages CPUs coordination through MCPM and
define different C-states for little and big cores through the
multiple CPU idle drivers infrastructure.

2
drivers/cpuidle/Makefile
View File

@ -7,8 +7,8 @@ obj-$(CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED) += coupled.o
################################################################################## ##################################################################################
# ARM SoC drivers # ARM SoC drivers
obj-$(CONFIG_ARM_BIG_LITTLE_CPUIDLE) += cpuidle-big_little.o
obj-$(CONFIG_ARM_HIGHBANK_CPUIDLE) += cpuidle-calxeda.o obj-$(CONFIG_ARM_HIGHBANK_CPUIDLE) += cpuidle-calxeda.o
obj-$(CONFIG_ARM_KIRKWOOD_CPUIDLE) += cpuidle-kirkwood.o obj-$(CONFIG_ARM_KIRKWOOD_CPUIDLE) += cpuidle-kirkwood.o
obj-$(CONFIG_ARM_ZYNQ_CPUIDLE) += cpuidle-zynq.o obj-$(CONFIG_ARM_ZYNQ_CPUIDLE) += cpuidle-zynq.o
obj-$(CONFIG_ARM_U8500_CPUIDLE) += cpuidle-ux500.o obj-$(CONFIG_ARM_U8500_CPUIDLE) += cpuidle-ux500.o
obj-$(CONFIG_CPU_IDLE_BIG_LITTLE) += cpuidle-big_little.o

2
drivers/cpuidle/cpuidle-ux500.c
View File

@ -111,7 +111,7 @@ static struct cpuidle_driver ux500_idle_driver = {
.state_count = 2, .state_count = 2,
}; };
static int __init dbx500_cpuidle_probe(struct platform_device *pdev) static int dbx500_cpuidle_probe(struct platform_device *pdev)
{ {
/* Configure wake up reasons */ /* Configure wake up reasons */
prcmu_enable_wakeups(PRCMU_WAKEUP(ARM) | PRCMU_WAKEUP(RTC) | prcmu_enable_wakeups(PRCMU_WAKEUP(ARM) | PRCMU_WAKEUP(RTC) |

17
drivers/cpuidle/cpuidle-zynq.c
View File

@ -28,7 +28,7 @@
#include <linux/init.h> #include <linux/init.h>
#include <linux/cpu_pm.h> #include <linux/cpu_pm.h>
#include <linux/cpuidle.h> #include <linux/cpuidle.h>
#include <linux/of.h> #include <linux/platform_device.h>
#include <asm/proc-fns.h> #include <asm/proc-fns.h>
#include <asm/cpuidle.h> #include <asm/cpuidle.h>
@ -70,14 +70,19 @@ static struct cpuidle_driver zynq_idle_driver = {
}; };
/* Initialize CPU idle by registering the idle states */ /* Initialize CPU idle by registering the idle states */
static int __init zynq_cpuidle_init(void) static int zynq_cpuidle_probe(struct platform_device *pdev)
{ {
if (!of_machine_is_compatible("xlnx,zynq-7000"))
return -ENODEV;
pr_info("Xilinx Zynq CpuIdle Driver started\n"); pr_info("Xilinx Zynq CpuIdle Driver started\n");
return cpuidle_register(&zynq_idle_driver, NULL); return cpuidle_register(&zynq_idle_driver, NULL);
} }
device_initcall(zynq_cpuidle_init); static struct platform_driver zynq_cpuidle_driver = {
.driver = {
.name = "cpuidle-zynq",
.owner = THIS_MODULE,
},
.probe = zynq_cpuidle_probe,
};
module_platform_driver(zynq_cpuidle_driver);