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author | Philippe Langlais <philippe.langlais@stericsson.com> | 2011-12-06 11:58:56 +0100 |
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committer | Philippe Langlais <philippe.langlais@stericsson.com> | 2011-12-06 11:58:56 +0100 |
commit | 388a5d7f47d788dd6ce9689d47b2cfa2f2e7f667 (patch) | |
tree | 8e142f05fb7c2c18d553a2bef8b4ce93ef17e7f5 /drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/linux/mali_linux_dvfs_pause_resume.c | |
parent | 1ca334c9b7d0c684c9ef3ea5a35324cf6b0fbbf4 (diff) | |
parent | 0d824e2c4676d62aacba0c034a375a541ad01c6f (diff) |
Merge branch 'mali' into linux-stable-ux500-3.1
Diffstat (limited to 'drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/linux/mali_linux_dvfs_pause_resume.c')
-rw-r--r-- | drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/linux/mali_linux_dvfs_pause_resume.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/linux/mali_linux_dvfs_pause_resume.c b/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/linux/mali_linux_dvfs_pause_resume.c new file mode 100644 index 00000000000..3d60d18e005 --- /dev/null +++ b/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/linux/mali_linux_dvfs_pause_resume.c @@ -0,0 +1,72 @@ +/** + * Copyright (C) 2010-2011 ARM Limited. All rights reserved. + * + * This program is free software and is provided to you under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence. + * + * A copy of the licence is included with the program, and can also be obtained from Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/** + * @file mali_linux_dvfs_pause_resume.c + * Implementation of the Mali pause/resume functionality + */ +#if USING_MALI_PMM +#include <linux/version.h> +#include <linux/sched.h> +#include <linux/module.h> +#include "mali_osk.h" +#include "mali_kernel_common.h" +#include "mali_platform.h" +#include "mali_linux_pm.h" +#include "mali_linux_dvfs_pause_resume.h" +#include "mali_pmm.h" +#include "mali_kernel_license.h" +#ifdef CONFIG_PM +#if MALI_LICENSE_IS_GPL + +/* Mali Pause Resume APIs */ +int mali_dev_dvfs_pause() +{ + int err = 0; + _mali_osk_lock_wait(lock, _MALI_OSK_LOCKMODE_RW); + if ((mali_dvfs_device_state == _MALI_DEVICE_SUSPEND) || (mali_device_state == _MALI_DEVICE_SUSPEND_IN_PROGRESS) + || (mali_device_state == _MALI_DEVICE_SUSPEND)) + { + err = -EPERM; + } + if ((mali_dvfs_device_state == _MALI_DEVICE_RESUME) && (!err)) + { + mali_device_suspend(MALI_PMM_EVENT_DVFS_PAUSE, &dvfs_pm_thread); + mali_dvfs_device_state = _MALI_DEVICE_SUSPEND; + } + _mali_osk_lock_signal(lock, _MALI_OSK_LOCKMODE_RW); + return err; +} + +EXPORT_SYMBOL(mali_dev_dvfs_pause); + +int mali_dev_dvfs_resume() +{ + int err = 0; + _mali_osk_lock_wait(lock, _MALI_OSK_LOCKMODE_RW); + if ((mali_dvfs_device_state == _MALI_DEVICE_RESUME) || (mali_device_state == _MALI_DEVICE_SUSPEND_IN_PROGRESS) + || (mali_device_state == _MALI_DEVICE_SUSPEND)) + { + err = -EPERM; + } + if (!err) + { + mali_device_resume(MALI_PMM_EVENT_DVFS_RESUME, &dvfs_pm_thread); + mali_dvfs_device_state = _MALI_DEVICE_RESUME; + } + _mali_osk_lock_signal(lock, _MALI_OSK_LOCKMODE_RW); + return err; +} + +EXPORT_SYMBOL(mali_dev_dvfs_resume); + +#endif /* MALI_LICENSE_IS_GPL */ +#endif /* CONFIG_PM */ +#endif /* USING_MALI_PMM */ |