diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/thermal/db8500_cpufreq_cooling.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/thermal/db8500_cpufreq_cooling.c')
-rw-r--r-- | kernel/drivers/thermal/db8500_cpufreq_cooling.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/kernel/drivers/thermal/db8500_cpufreq_cooling.c b/kernel/drivers/thermal/db8500_cpufreq_cooling.c new file mode 100644 index 000000000..607b62c7e --- /dev/null +++ b/kernel/drivers/thermal/db8500_cpufreq_cooling.c @@ -0,0 +1,104 @@ +/* + * db8500_cpufreq_cooling.c - DB8500 cpufreq works as cooling device. + * + * Copyright (C) 2012 ST-Ericsson + * Copyright (C) 2012 Linaro Ltd. + * + * Author: Hongbo Zhang <hongbo.zhang@linaro.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that 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. + */ + +#include <linux/cpu_cooling.h> +#include <linux/err.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +static int db8500_cpufreq_cooling_probe(struct platform_device *pdev) +{ + struct thermal_cooling_device *cdev; + + cdev = cpufreq_cooling_register(cpu_present_mask); + if (IS_ERR(cdev)) { + int ret = PTR_ERR(cdev); + + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, + "Failed to register cooling device %d\n", + ret); + + return ret; + } + + platform_set_drvdata(pdev, cdev); + + dev_info(&pdev->dev, "Cooling device registered: %s\n", cdev->type); + + return 0; +} + +static int db8500_cpufreq_cooling_remove(struct platform_device *pdev) +{ + struct thermal_cooling_device *cdev = platform_get_drvdata(pdev); + + cpufreq_cooling_unregister(cdev); + + return 0; +} + +static int db8500_cpufreq_cooling_suspend(struct platform_device *pdev, + pm_message_t state) +{ + return -ENOSYS; +} + +static int db8500_cpufreq_cooling_resume(struct platform_device *pdev) +{ + return -ENOSYS; +} + +#ifdef CONFIG_OF +static const struct of_device_id db8500_cpufreq_cooling_match[] = { + { .compatible = "stericsson,db8500-cpufreq-cooling" }, + {}, +}; +#endif + +static struct platform_driver db8500_cpufreq_cooling_driver = { + .driver = { + .name = "db8500-cpufreq-cooling", + .of_match_table = of_match_ptr(db8500_cpufreq_cooling_match), + }, + .probe = db8500_cpufreq_cooling_probe, + .suspend = db8500_cpufreq_cooling_suspend, + .resume = db8500_cpufreq_cooling_resume, + .remove = db8500_cpufreq_cooling_remove, +}; + +static int __init db8500_cpufreq_cooling_init(void) +{ + return platform_driver_register(&db8500_cpufreq_cooling_driver); +} + +static void __exit db8500_cpufreq_cooling_exit(void) +{ + platform_driver_unregister(&db8500_cpufreq_cooling_driver); +} + +/* Should be later than db8500_cpufreq_register */ +late_initcall(db8500_cpufreq_cooling_init); +module_exit(db8500_cpufreq_cooling_exit); + +MODULE_AUTHOR("Hongbo Zhang <hongbo.zhang@stericsson.com>"); +MODULE_DESCRIPTION("DB8500 cpufreq cooling driver"); +MODULE_LICENSE("GPL"); |