1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr>
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include <linux/list.h>
7*4882a593Smuzhiyun #include <linux/slab.h>
8*4882a593Smuzhiyun #include <sound/ac97/codec.h>
9*4882a593Smuzhiyun #include <sound/ac97/compat.h>
10*4882a593Smuzhiyun #include <sound/ac97/controller.h>
11*4882a593Smuzhiyun #include <sound/soc.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include "ac97_core.h"
14*4882a593Smuzhiyun
compat_ac97_release(struct device * dev)15*4882a593Smuzhiyun static void compat_ac97_release(struct device *dev)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun kfree(to_ac97_t(dev));
18*4882a593Smuzhiyun }
19*4882a593Smuzhiyun
compat_ac97_reset(struct snd_ac97 * ac97)20*4882a593Smuzhiyun static void compat_ac97_reset(struct snd_ac97 *ac97)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
23*4882a593Smuzhiyun struct ac97_controller *actrl = adev->ac97_ctrl;
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun if (actrl->ops->reset)
26*4882a593Smuzhiyun actrl->ops->reset(actrl);
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
compat_ac97_warm_reset(struct snd_ac97 * ac97)29*4882a593Smuzhiyun static void compat_ac97_warm_reset(struct snd_ac97 *ac97)
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
32*4882a593Smuzhiyun struct ac97_controller *actrl = adev->ac97_ctrl;
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun if (actrl->ops->warm_reset)
35*4882a593Smuzhiyun actrl->ops->warm_reset(actrl);
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun
compat_ac97_write(struct snd_ac97 * ac97,unsigned short reg,unsigned short val)38*4882a593Smuzhiyun static void compat_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
39*4882a593Smuzhiyun unsigned short val)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
42*4882a593Smuzhiyun struct ac97_controller *actrl = adev->ac97_ctrl;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun actrl->ops->write(actrl, ac97->num, reg, val);
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun
compat_ac97_read(struct snd_ac97 * ac97,unsigned short reg)47*4882a593Smuzhiyun static unsigned short compat_ac97_read(struct snd_ac97 *ac97,
48*4882a593Smuzhiyun unsigned short reg)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
51*4882a593Smuzhiyun struct ac97_controller *actrl = adev->ac97_ctrl;
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun return actrl->ops->read(actrl, ac97->num, reg);
54*4882a593Smuzhiyun }
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun static const struct snd_ac97_bus_ops compat_snd_ac97_bus_ops = {
57*4882a593Smuzhiyun .reset = compat_ac97_reset,
58*4882a593Smuzhiyun .warm_reset = compat_ac97_warm_reset,
59*4882a593Smuzhiyun .write = compat_ac97_write,
60*4882a593Smuzhiyun .read = compat_ac97_read,
61*4882a593Smuzhiyun };
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun static struct snd_ac97_bus compat_soc_ac97_bus = {
64*4882a593Smuzhiyun .ops = &compat_snd_ac97_bus_ops,
65*4882a593Smuzhiyun };
66*4882a593Smuzhiyun
snd_ac97_compat_alloc(struct ac97_codec_device * adev)67*4882a593Smuzhiyun struct snd_ac97 *snd_ac97_compat_alloc(struct ac97_codec_device *adev)
68*4882a593Smuzhiyun {
69*4882a593Smuzhiyun struct snd_ac97 *ac97;
70*4882a593Smuzhiyun int ret;
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
73*4882a593Smuzhiyun if (ac97 == NULL)
74*4882a593Smuzhiyun return ERR_PTR(-ENOMEM);
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun ac97->private_data = adev;
77*4882a593Smuzhiyun ac97->bus = &compat_soc_ac97_bus;
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun ac97->dev.parent = &adev->dev;
80*4882a593Smuzhiyun ac97->dev.release = compat_ac97_release;
81*4882a593Smuzhiyun dev_set_name(&ac97->dev, "%s-compat", dev_name(&adev->dev));
82*4882a593Smuzhiyun ret = device_register(&ac97->dev);
83*4882a593Smuzhiyun if (ret) {
84*4882a593Smuzhiyun put_device(&ac97->dev);
85*4882a593Smuzhiyun return ERR_PTR(ret);
86*4882a593Smuzhiyun }
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun return ac97;
89*4882a593Smuzhiyun }
90*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(snd_ac97_compat_alloc);
91*4882a593Smuzhiyun
snd_ac97_compat_release(struct snd_ac97 * ac97)92*4882a593Smuzhiyun void snd_ac97_compat_release(struct snd_ac97 *ac97)
93*4882a593Smuzhiyun {
94*4882a593Smuzhiyun device_unregister(&ac97->dev);
95*4882a593Smuzhiyun }
96*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(snd_ac97_compat_release);
97*4882a593Smuzhiyun
snd_ac97_reset(struct snd_ac97 * ac97,bool try_warm,unsigned int id,unsigned int id_mask)98*4882a593Smuzhiyun int snd_ac97_reset(struct snd_ac97 *ac97, bool try_warm, unsigned int id,
99*4882a593Smuzhiyun unsigned int id_mask)
100*4882a593Smuzhiyun {
101*4882a593Smuzhiyun struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
102*4882a593Smuzhiyun struct ac97_controller *actrl = adev->ac97_ctrl;
103*4882a593Smuzhiyun unsigned int scanned;
104*4882a593Smuzhiyun
105*4882a593Smuzhiyun if (try_warm) {
106*4882a593Smuzhiyun compat_ac97_warm_reset(ac97);
107*4882a593Smuzhiyun scanned = snd_ac97_bus_scan_one(actrl, adev->num);
108*4882a593Smuzhiyun if (ac97_ids_match(scanned, adev->vendor_id, id_mask))
109*4882a593Smuzhiyun return 1;
110*4882a593Smuzhiyun }
111*4882a593Smuzhiyun
112*4882a593Smuzhiyun compat_ac97_reset(ac97);
113*4882a593Smuzhiyun compat_ac97_warm_reset(ac97);
114*4882a593Smuzhiyun scanned = snd_ac97_bus_scan_one(actrl, adev->num);
115*4882a593Smuzhiyun if (ac97_ids_match(scanned, adev->vendor_id, id_mask))
116*4882a593Smuzhiyun return 0;
117*4882a593Smuzhiyun
118*4882a593Smuzhiyun return -ENODEV;
119*4882a593Smuzhiyun }
120*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(snd_ac97_reset);
121