LXR linux/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm

   1/*
   2 * Copyright 2015 Advanced Micro Devices, Inc.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 * OTHER DEALINGS IN THE SOFTWARE.
  21 *
  22 */
  23
  24#ifndef __AMDGPU_DM_IRQ_H__
  25#define __AMDGPU_DM_IRQ_H__
  26
  27#include "irq_types.h" /* DAL irq definitions */
  28
  29/*
  30 * Display Manager IRQ-related interfaces (for use by DAL).
  31 */
  32
  33/**
  34 * amdgpu_dm_irq_init - Initialize internal structures of 'amdgpu_dm_irq'.
  35 *
  36 * This function should be called exactly once - during DM initialization.
  37 *
  38 * Returns:
  39 *      0 - success
  40 *      non-zero - error
  41 */
  42int amdgpu_dm_irq_init(struct amdgpu_device *adev);
  43
  44/**
  45 * amdgpu_dm_irq_fini - deallocate internal structures of 'amdgpu_dm_irq'.
  46 *
  47 * This function should be called exactly once - during DM destruction.
  48 *
  49 */
  50void amdgpu_dm_irq_fini(struct amdgpu_device *adev);
  51
  52/**
  53 * amdgpu_dm_irq_register_interrupt - register irq handler for Display block.
  54 *
  55 * @adev: AMD DRM device
  56 * @int_params: parameters for the irq
  57 * @ih: pointer to the irq hander function
  58 * @handler_args: arguments which will be passed to ih
  59 *
  60 * Returns:
  61 *      IRQ Handler Index on success.
  62 *      NULL on failure.
  63 *
  64 * Cannot be called from an interrupt handler.
  65 */
  66void *amdgpu_dm_irq_register_interrupt(struct amdgpu_device *adev,
  67                                       struct dc_interrupt_params *int_params,
  68                                       void (*ih)(void *),
  69                                       void *handler_args);
  70
  71/**
  72 * amdgpu_dm_irq_unregister_interrupt - unregister handler which was registered
  73 *      by amdgpu_dm_irq_register_interrupt().
  74 *
  75 * @adev: AMD DRM device.
  76 * @ih_index: irq handler index which was returned by
  77 *      amdgpu_dm_irq_register_interrupt
  78 */
  79void amdgpu_dm_irq_unregister_interrupt(struct amdgpu_device *adev,
  80                                        enum dc_irq_source irq_source,
  81                                        void *ih_index);
  82
  83void amdgpu_dm_set_irq_funcs(struct amdgpu_device *adev);
  84
  85void amdgpu_dm_outbox_init(struct amdgpu_device *adev);
  86void amdgpu_dm_hpd_init(struct amdgpu_device *adev);
  87void amdgpu_dm_hpd_fini(struct amdgpu_device *adev);
  88
  89/**
  90 * amdgpu_dm_irq_suspend - disable ASIC interrupt during suspend.
  91 *
  92 */
  93int amdgpu_dm_irq_suspend(struct amdgpu_device *adev);
  94
  95/**
  96 * amdgpu_dm_irq_resume_early - enable HPDRX ASIC interrupts during resume.
  97 * amdgpu_dm_irq_resume - enable ASIC interrupt during resume.
  98 *
  99 */
 100int amdgpu_dm_irq_resume_early(struct amdgpu_device *adev);
 101int amdgpu_dm_irq_resume_late(struct amdgpu_device *adev);
 102
 103#endif /* __AMDGPU_DM_IRQ_H__ */
 104