/drivers/gpu/mali/mali/linux/mali_osk_pm.c

https://bitbucket.org/ndreys/linux-sunxi · C · 83 lines · 59 code · 9 blank · 15 comment · 6 complexity · 2dffdcb2ea58e892d72e883025e85af5 MD5 · raw file 

    

  1. /**
    2. 

  2.  * Copyright (C) 2010-2012 ARM Limited. All rights reserved.
    3. 

  3.  * 
    4. 

  4.  * This program is free software and is provided to you under the terms of the GNU General Public License version 2
    5. 

  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. 

  6.  * 
    7. 

  7.  * A copy of the licence is included with the program, and can also be obtained from Free Software
    8. 

  8.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
    9. 

  9.  */
    10. 

  10. 

  11. /**
    12. 

  12.  * @file mali_osk_pm.c
    13. 

  13.  * Implementation of the callback functions from common power management
    14. 

  14.  */
    15. 

  15. 

  16. #include <linux/sched.h>
    17. 

  17. 

  18. #ifdef CONFIG_PM_RUNTIME
    19. 

  19. #include <linux/pm_runtime.h>
    20. 

  20. #endif /* CONFIG_PM_RUNTIME */
    21. 

  21. #include <linux/platform_device.h>
    22. 

  22. #include "mali_platform.h"
    23. 

  23. #include "mali_osk.h"
    24. 

  24. #include "mali_uk_types.h"
    25. 

  25. #include "mali_kernel_common.h"
    26. 

  26. #include "mali_kernel_license.h"
    27. 

  27. #include "mali_linux_pm.h"
    28. 

  28. #include "mali_kernel_license.h"
    29. 

  29. 

  30. #if ! MALI_LICENSE_IS_GPL
    31. 

  31. #undef CONFIG_PM_RUNTIME
    32. 

  32. #endif
    33. 

  33. 

  34. extern struct platform_device mali_gpu_device;
    35. 

  35. 

  36. #ifdef CONFIG_PM_RUNTIME
    37. 

  37. static mali_bool have_runtime_reference = MALI_FALSE;
    38. 

  38. #endif
    39. 

  39. 

  40. void _mali_osk_pm_dev_enable(void)
    41. 

  41. {
    42. 

  42. #ifdef CONFIG_PM_RUNTIME
    43. 

  43. 	pm_runtime_enable(&(mali_gpu_device.dev));
    44. 

  44. #endif
    45. 

  45. }
    46. 

  46. 

  47. /* NB: Function is not thread safe */
    48. 

  48. _mali_osk_errcode_t _mali_osk_pm_dev_idle(void)
    49. 

  49. {
    50. 

  50. #ifdef CONFIG_PM_RUNTIME
    51. 

  51. 	if (MALI_TRUE == have_runtime_reference)
    52. 

  52. 	{
    53. 

  53. 		int err;
    54. 

  54. 		err = pm_runtime_put_sync(&(mali_gpu_device.dev));	
    55. 

  55. 		if (0 > err)
    56. 

  56. 		{
    57. 

  57. 			MALI_PRINT_ERROR(("OSK PM: pm_runtime_put_sync() returned error code %d\n", err));	
    58. 

  58. 			return _MALI_OSK_ERR_FAULT;
    59. 

  59. 		}
    60. 

  60. 		have_runtime_reference = MALI_FALSE;
    61. 

  61. 	}
    62. 

  62. #endif
    63. 

  63. 	return _MALI_OSK_ERR_OK;
    64. 

  64. }
    65. 

  65. 

  66. /* NB: Function is not thread safe */
    67. 

  67. _mali_osk_errcode_t _mali_osk_pm_dev_activate(void)
    68. 

  68. {
    69. 

  69. #ifdef CONFIG_PM_RUNTIME
    70. 

  70. 	if (MALI_TRUE != have_runtime_reference)
    71. 

  71. 	{
    72. 

  72. 		int err;
    73. 

  73. 		err = pm_runtime_get_sync(&(mali_gpu_device.dev));
    74. 

  74. 		if (0 > err)
    75. 

  75. 		{
    76. 

  76. 			MALI_PRINT_ERROR(("OSK PM: pm_runtime_get_sync() returned error code %d\n", err));	
    77. 

  77. 			return _MALI_OSK_ERR_FAULT;
    78. 

  78. 		}
    79. 

  79. 		have_runtime_reference = MALI_TRUE;
    80. 

  80. 	}
    81. 

  81. #endif
    82. 

  82. 	return _MALI_OSK_ERR_OK;
    83. 

  83. }
    84.