summaryrefslogtreecommitdiffstats
path: root/sound/ac97/snd_ac97_compat.c
blob: 61544e0d8de472f99754ba29d4a6dacdb746c0d1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
/*
 *  Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/list.h>
#include <linux/slab.h>
#include <sound/ac97/codec.h>
#include <sound/ac97/compat.h>
#include <sound/ac97/controller.h>
#include <sound/soc.h>

#include "ac97_core.h"

static void compat_ac97_reset(struct snd_ac97 *ac97)
{
	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	struct ac97_controller *actrl = adev->ac97_ctrl;

	if (actrl->ops->reset)
		actrl->ops->reset(actrl);
}

static void compat_ac97_warm_reset(struct snd_ac97 *ac97)
{
	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	struct ac97_controller *actrl = adev->ac97_ctrl;

	if (actrl->ops->warm_reset)
		actrl->ops->warm_reset(actrl);
}

static void compat_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
			      unsigned short val)
{
	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	struct ac97_controller *actrl = adev->ac97_ctrl;

	actrl->ops->write(actrl, ac97->num, reg, val);
}

static unsigned short compat_ac97_read(struct snd_ac97 *ac97,
				       unsigned short reg)
{
	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	struct ac97_controller *actrl = adev->ac97_ctrl;

	return actrl->ops->read(actrl, ac97->num, reg);
}

static struct snd_ac97_bus_ops compat_snd_ac97_bus_ops = {
	.reset = compat_ac97_reset,
	.warm_reset = compat_ac97_warm_reset,
	.write = compat_ac97_write,
	.read = compat_ac97_read,
};

static struct snd_ac97_bus compat_soc_ac97_bus = {
	.ops = &compat_snd_ac97_bus_ops,
};

struct snd_ac97 *snd_ac97_compat_alloc(struct ac97_codec_device *adev)
{
	struct snd_ac97 *ac97;

	ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
	if (ac97 == NULL)
		return ERR_PTR(-ENOMEM);

	ac97->dev = adev->dev;
	ac97->private_data = adev;
	ac97->bus = &compat_soc_ac97_bus;
	return ac97;
}
EXPORT_SYMBOL_GPL(snd_ac97_compat_alloc);

void snd_ac97_compat_release(struct snd_ac97 *ac97)
{
	kfree(ac97);
}
EXPORT_SYMBOL_GPL(snd_ac97_compat_release);

int snd_ac97_reset(struct snd_ac97 *ac97, bool try_warm, unsigned int id,
	unsigned int id_mask)
{
	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	struct ac97_controller *actrl = adev->ac97_ctrl;
	unsigned int scanned;

	if (try_warm) {
		compat_ac97_warm_reset(ac97);
		scanned = snd_ac97_bus_scan_one(actrl, adev->num);
		if (ac97_ids_match(scanned, adev->vendor_id, id_mask))
			return 1;
	}

	compat_ac97_reset(ac97);
	compat_ac97_warm_reset(ac97);
	scanned = snd_ac97_bus_scan_one(actrl, adev->num);
	if (ac97_ids_match(scanned, adev->vendor_id, id_mask))
		return 0;

	return -ENODEV;
}
EXPORT_SYMBOL_GPL(snd_ac97_reset);