/drivers/gpu/mali/mali/linux/mali_osk_pm.c
C | 83 lines | 59 code | 9 blank | 15 comment | 6 complexity | 2dffdcb2ea58e892d72e883025e85af5 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
1/** 2 * Copyright (C) 2010-2012 ARM Limited. All rights reserved. 3 * 4 * This program is free software and is provided to you under the terms of the GNU General Public License version 2 5 * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence. 6 * 7 * A copy of the licence is included with the program, and can also be obtained from Free Software 8 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 9 */ 10 11/** 12 * @file mali_osk_pm.c 13 * Implementation of the callback functions from common power management 14 */ 15 16#include <linux/sched.h> 17 18#ifdef CONFIG_PM_RUNTIME 19#include <linux/pm_runtime.h> 20#endif /* CONFIG_PM_RUNTIME */ 21#include <linux/platform_device.h> 22#include "mali_platform.h" 23#include "mali_osk.h" 24#include "mali_uk_types.h" 25#include "mali_kernel_common.h" 26#include "mali_kernel_license.h" 27#include "mali_linux_pm.h" 28#include "mali_kernel_license.h" 29 30#if ! MALI_LICENSE_IS_GPL 31#undef CONFIG_PM_RUNTIME 32#endif 33 34extern struct platform_device mali_gpu_device; 35 36#ifdef CONFIG_PM_RUNTIME 37static mali_bool have_runtime_reference = MALI_FALSE; 38#endif 39 40void _mali_osk_pm_dev_enable(void) 41{ 42#ifdef CONFIG_PM_RUNTIME 43 pm_runtime_enable(&(mali_gpu_device.dev)); 44#endif 45} 46 47/* NB: Function is not thread safe */ 48_mali_osk_errcode_t _mali_osk_pm_dev_idle(void) 49{ 50#ifdef CONFIG_PM_RUNTIME 51 if (MALI_TRUE == have_runtime_reference) 52 { 53 int err; 54 err = pm_runtime_put_sync(&(mali_gpu_device.dev)); 55 if (0 > err) 56 { 57 MALI_PRINT_ERROR(("OSK PM: pm_runtime_put_sync() returned error code %d\n", err)); 58 return _MALI_OSK_ERR_FAULT; 59 } 60 have_runtime_reference = MALI_FALSE; 61 } 62#endif 63 return _MALI_OSK_ERR_OK; 64} 65 66/* NB: Function is not thread safe */ 67_mali_osk_errcode_t _mali_osk_pm_dev_activate(void) 68{ 69#ifdef CONFIG_PM_RUNTIME 70 if (MALI_TRUE != have_runtime_reference) 71 { 72 int err; 73 err = pm_runtime_get_sync(&(mali_gpu_device.dev)); 74 if (0 > err) 75 { 76 MALI_PRINT_ERROR(("OSK PM: pm_runtime_get_sync() returned error code %d\n", err)); 77 return _MALI_OSK_ERR_FAULT; 78 } 79 have_runtime_reference = MALI_TRUE; 80 } 81#endif 82 return _MALI_OSK_ERR_OK; 83}