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1/*
2 * Copyright © 2014 Intel Corporation
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 (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24#ifndef _I915_COMPONENT_H_
25#define _I915_COMPONENT_H_
26
27#include "drm_audio_component.h"
28
29enum i915_component_type {
30 I915_COMPONENT_AUDIO = 1,
31 I915_COMPONENT_HDCP,
32};
33
34/* MAX_PORT is the number of port
35 * It must be sync with I915_MAX_PORTS defined i915_drv.h
36 */
37#define MAX_PORTS 9
38
39/**
40 * struct i915_audio_component - Used for direct communication between i915 and hda drivers
41 */
42struct i915_audio_component {
43 /**
44 * @base: the drm_audio_component base class
45 */
46 struct drm_audio_component base;
47
48 /**
49 * @aud_sample_rate: the array of audio sample rate per port
50 */
51 int aud_sample_rate[MAX_PORTS];
52};
53
54#endif /* _I915_COMPONENT_H_ */
1/*
2 * Copyright © 2014 Intel Corporation
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 (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24#ifndef _I915_COMPONENT_H_
25#define _I915_COMPONENT_H_
26
27/* MAX_PORT is the number of port
28 * It must be sync with I915_MAX_PORTS defined i915_drv.h
29 * 5 should be enough as only HSW, BDW, SKL need such fix.
30 */
31#define MAX_PORTS 5
32
33/**
34 * struct i915_audio_component_ops - Ops implemented by i915 driver, called by hda driver
35 */
36struct i915_audio_component_ops {
37 /**
38 * @owner: i915 module
39 */
40 struct module *owner;
41 /**
42 * @get_power: get the POWER_DOMAIN_AUDIO power well
43 *
44 * Request the power well to be turned on.
45 */
46 void (*get_power)(struct device *);
47 /**
48 * @put_power: put the POWER_DOMAIN_AUDIO power well
49 *
50 * Allow the power well to be turned off.
51 */
52 void (*put_power)(struct device *);
53 /**
54 * @codec_wake_override: Enable/disable codec wake signal
55 */
56 void (*codec_wake_override)(struct device *, bool enable);
57 /**
58 * @get_cdclk_freq: Get the Core Display Clock in kHz
59 */
60 int (*get_cdclk_freq)(struct device *);
61 /**
62 * @sync_audio_rate: set n/cts based on the sample rate
63 *
64 * Called from audio driver. After audio driver sets the
65 * sample rate, it will call this function to set n/cts
66 */
67 int (*sync_audio_rate)(struct device *, int port, int pipe, int rate);
68 /**
69 * @get_eld: fill the audio state and ELD bytes for the given port
70 *
71 * Called from audio driver to get the HDMI/DP audio state of the given
72 * digital port, and also fetch ELD bytes to the given pointer.
73 *
74 * It returns the byte size of the original ELD (not the actually
75 * copied size), zero for an invalid ELD, or a negative error code.
76 *
77 * Note that the returned size may be over @max_bytes. Then it
78 * implies that only a part of ELD has been copied to the buffer.
79 */
80 int (*get_eld)(struct device *, int port, int pipe, bool *enabled,
81 unsigned char *buf, int max_bytes);
82};
83
84/**
85 * struct i915_audio_component_audio_ops - Ops implemented by hda driver, called by i915 driver
86 */
87struct i915_audio_component_audio_ops {
88 /**
89 * @audio_ptr: Pointer to be used in call to pin_eld_notify
90 */
91 void *audio_ptr;
92 /**
93 * @pin_eld_notify: Notify the HDA driver that pin sense and/or ELD information has changed
94 *
95 * Called when the i915 driver has set up audio pipeline or has just
96 * begun to tear it down. This allows the HDA driver to update its
97 * status accordingly (even when the HDA controller is in power save
98 * mode).
99 */
100 void (*pin_eld_notify)(void *audio_ptr, int port, int pipe);
101};
102
103/**
104 * struct i915_audio_component - Used for direct communication between i915 and hda drivers
105 */
106struct i915_audio_component {
107 /**
108 * @dev: i915 device, used as parameter for ops
109 */
110 struct device *dev;
111 /**
112 * @aud_sample_rate: the array of audio sample rate per port
113 */
114 int aud_sample_rate[MAX_PORTS];
115 /**
116 * @ops: Ops implemented by i915 driver, called by hda driver
117 */
118 const struct i915_audio_component_ops *ops;
119 /**
120 * @audio_ops: Ops implemented by hda driver, called by i915 driver
121 */
122 const struct i915_audio_component_audio_ops *audio_ops;
123};
124
125#endif /* _I915_COMPONENT_H_ */