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