b82b6cca48
The only place where the time is invalid is when the ACPI_CSTATE_FFH entry method is not set. Otherwise for all the drivers, the time can be correctly measured. Instead of duplicating the CPUIDLE_FLAG_TIME_VALID flag in all the drivers for all the states, just invert the logic by replacing it by the flag CPUIDLE_FLAG_TIME_INVALID, hence we can set this flag only for the acpi idle driver, remove the former flag from all the drivers and invert the logic with this flag in the different governor. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
146 lines
3.6 KiB
C
146 lines
3.6 KiB
C
/*
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* Marvell Armada 370, 38x and XP SoC cpuidle driver
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*
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* Copyright (C) 2014 Marvell
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*
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* Nadav Haklai <nadavh@marvell.com>
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* Gregory CLEMENT <gregory.clement@free-electrons.com>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*
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* Maintainer: Gregory CLEMENT <gregory.clement@free-electrons.com>
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*/
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#include <linux/cpu_pm.h>
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#include <linux/cpuidle.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/suspend.h>
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#include <linux/platform_device.h>
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#include <asm/cpuidle.h>
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#define MVEBU_V7_FLAG_DEEP_IDLE 0x10000
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static int (*mvebu_v7_cpu_suspend)(int);
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static int mvebu_v7_enter_idle(struct cpuidle_device *dev,
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struct cpuidle_driver *drv,
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int index)
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{
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int ret;
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bool deepidle = false;
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cpu_pm_enter();
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if (drv->states[index].flags & MVEBU_V7_FLAG_DEEP_IDLE)
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deepidle = true;
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ret = mvebu_v7_cpu_suspend(deepidle);
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if (ret)
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return ret;
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cpu_pm_exit();
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return index;
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}
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static struct cpuidle_driver armadaxp_idle_driver = {
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.name = "armada_xp_idle",
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.states[0] = ARM_CPUIDLE_WFI_STATE,
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.states[1] = {
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.enter = mvebu_v7_enter_idle,
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.exit_latency = 10,
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.power_usage = 50,
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.target_residency = 100,
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.name = "MV CPU IDLE",
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.desc = "CPU power down",
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},
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.states[2] = {
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.enter = mvebu_v7_enter_idle,
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.exit_latency = 100,
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.power_usage = 5,
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.target_residency = 1000,
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.flags = MVEBU_V7_FLAG_DEEP_IDLE,
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.name = "MV CPU DEEP IDLE",
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.desc = "CPU and L2 Fabric power down",
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},
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.state_count = 3,
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};
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static struct cpuidle_driver armada370_idle_driver = {
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.name = "armada_370_idle",
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.states[0] = ARM_CPUIDLE_WFI_STATE,
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.states[1] = {
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.enter = mvebu_v7_enter_idle,
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.exit_latency = 100,
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.power_usage = 5,
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.target_residency = 1000,
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.flags = MVEBU_V7_FLAG_DEEP_IDLE,
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.name = "Deep Idle",
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.desc = "CPU and L2 Fabric power down",
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},
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.state_count = 2,
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};
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static struct cpuidle_driver armada38x_idle_driver = {
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.name = "armada_38x_idle",
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.states[0] = ARM_CPUIDLE_WFI_STATE,
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.states[1] = {
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.enter = mvebu_v7_enter_idle,
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.exit_latency = 10,
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.power_usage = 5,
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.target_residency = 100,
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.name = "Idle",
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.desc = "CPU and SCU power down",
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},
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.state_count = 2,
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};
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static int mvebu_v7_cpuidle_probe(struct platform_device *pdev)
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{
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mvebu_v7_cpu_suspend = pdev->dev.platform_data;
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if (!strcmp(pdev->dev.driver->name, "cpuidle-armada-xp"))
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return cpuidle_register(&armadaxp_idle_driver, NULL);
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else if (!strcmp(pdev->dev.driver->name, "cpuidle-armada-370"))
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return cpuidle_register(&armada370_idle_driver, NULL);
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else if (!strcmp(pdev->dev.driver->name, "cpuidle-armada-38x"))
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return cpuidle_register(&armada38x_idle_driver, NULL);
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else
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return -EINVAL;
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}
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static struct platform_driver armadaxp_cpuidle_plat_driver = {
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.driver = {
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.name = "cpuidle-armada-xp",
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.owner = THIS_MODULE,
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},
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.probe = mvebu_v7_cpuidle_probe,
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};
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module_platform_driver(armadaxp_cpuidle_plat_driver);
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static struct platform_driver armada370_cpuidle_plat_driver = {
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.driver = {
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.name = "cpuidle-armada-370",
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.owner = THIS_MODULE,
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},
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.probe = mvebu_v7_cpuidle_probe,
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};
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module_platform_driver(armada370_cpuidle_plat_driver);
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static struct platform_driver armada38x_cpuidle_plat_driver = {
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.driver = {
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.name = "cpuidle-armada-38x",
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.owner = THIS_MODULE,
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},
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.probe = mvebu_v7_cpuidle_probe,
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};
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module_platform_driver(armada38x_cpuidle_plat_driver);
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MODULE_AUTHOR("Gregory CLEMENT <gregory.clement@free-electrons.com>");
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MODULE_DESCRIPTION("Marvell EBU v7 cpuidle driver");
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MODULE_LICENSE("GPL");
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