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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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dc559aabe2
The length name of the states 2 was too long to fit in the allocated string (limited to 16 bytes). This lead to improper string displayed through sysfs. This patch shorten the name by removing the reference to Marvell and to the CPU as both are implicit. For coherency the same change have been done for the states 1. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/*
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* Marvell Armada 370 and Armada 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 ARMADA_370_XP_MAX_STATES 3
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#define ARMADA_370_XP_FLAG_DEEP_IDLE 0x10000
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static int (*armada_370_xp_cpu_suspend)(int);
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static int armada_370_xp_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 & ARMADA_370_XP_FLAG_DEEP_IDLE)
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deepidle = true;
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ret = armada_370_xp_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 armada_370_xp_idle_driver = {
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.name = "armada_370_xp_idle",
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.states[0] = ARM_CPUIDLE_WFI_STATE,
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.states[1] = {
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.enter = armada_370_xp_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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.flags = CPUIDLE_FLAG_TIME_VALID,
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.name = "Idle",
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.desc = "CPU power down",
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},
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.states[2] = {
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.enter = armada_370_xp_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 = CPUIDLE_FLAG_TIME_VALID |
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ARMADA_370_XP_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 = ARMADA_370_XP_MAX_STATES,
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};
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static int armada_370_xp_cpuidle_probe(struct platform_device *pdev)
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{
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armada_370_xp_cpu_suspend = (void *)(pdev->dev.platform_data);
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return cpuidle_register(&armada_370_xp_idle_driver, NULL);
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}
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static struct platform_driver armada_370_xp_cpuidle_plat_driver = {
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.driver = {
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.name = "cpuidle-armada-370-xp",
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.owner = THIS_MODULE,
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},
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.probe = armada_370_xp_cpuidle_probe,
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};
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module_platform_driver(armada_370_xp_cpuidle_plat_driver);
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MODULE_AUTHOR("Gregory CLEMENT <gregory.clement@free-electrons.com>");
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MODULE_DESCRIPTION("Armada 370/XP cpu idle driver");
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MODULE_LICENSE("GPL");
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