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
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
// SPDX-License-Identifier: GPL-2.0
//
// HDA DSP ALSA Control Driver
//
// Copyright 2022 Cirrus Logic, Inc.
//
// Author: Stefan Binding <sbinding@opensource.cirrus.com>
#include <linux/module.h>
#include <sound/soc.h>
#include <linux/cleanup.h>
#include <linux/firmware/cirrus/cs_dsp.h>
#include <linux/firmware/cirrus/wmfw.h>
#include "hda_cs_dsp_ctl.h"
#define ADSP_MAX_STD_CTRL_SIZE 512
struct hda_cs_dsp_coeff_ctl {
struct cs_dsp_coeff_ctl *cs_ctl;
struct snd_card *card;
struct snd_kcontrol *kctl;
};
static const char * const hda_cs_dsp_fw_text[HDA_CS_DSP_NUM_FW] = {
[HDA_CS_DSP_FW_SPK_PROT] = "Prot",
[HDA_CS_DSP_FW_SPK_CALI] = "Cali",
[HDA_CS_DSP_FW_SPK_DIAG] = "Diag",
[HDA_CS_DSP_FW_MISC] = "Misc",
};
const char * const hda_cs_dsp_fw_ids[HDA_CS_DSP_NUM_FW] = {
[HDA_CS_DSP_FW_SPK_PROT] = "spk-prot",
[HDA_CS_DSP_FW_SPK_CALI] = "spk-cali",
[HDA_CS_DSP_FW_SPK_DIAG] = "spk-diag",
[HDA_CS_DSP_FW_MISC] = "misc",
};
EXPORT_SYMBOL_NS_GPL(hda_cs_dsp_fw_ids, SND_HDA_CS_DSP_CONTROLS);
static int hda_cs_dsp_coeff_info(struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo)
{
struct hda_cs_dsp_coeff_ctl *ctl = (struct hda_cs_dsp_coeff_ctl *)snd_kcontrol_chip(kctl);
struct cs_dsp_coeff_ctl *cs_ctl = ctl->cs_ctl;
uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
uinfo->count = cs_ctl->len;
return 0;
}
static int hda_cs_dsp_coeff_put(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *ucontrol)
{
struct hda_cs_dsp_coeff_ctl *ctl = (struct hda_cs_dsp_coeff_ctl *)snd_kcontrol_chip(kctl);
struct cs_dsp_coeff_ctl *cs_ctl = ctl->cs_ctl;
char *p = ucontrol->value.bytes.data;
return cs_dsp_coeff_lock_and_write_ctrl(cs_ctl, 0, p, cs_ctl->len);
}
static int hda_cs_dsp_coeff_get(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *ucontrol)
{
struct hda_cs_dsp_coeff_ctl *ctl = (struct hda_cs_dsp_coeff_ctl *)snd_kcontrol_chip(kctl);
struct cs_dsp_coeff_ctl *cs_ctl = ctl->cs_ctl;
char *p = ucontrol->value.bytes.data;
return cs_dsp_coeff_lock_and_read_ctrl(cs_ctl, 0, p, cs_ctl->len);
}
static unsigned int wmfw_convert_flags(unsigned int in)
{
unsigned int out, rd, wr, vol;
rd = SNDRV_CTL_ELEM_ACCESS_READ;
wr = SNDRV_CTL_ELEM_ACCESS_WRITE;
vol = SNDRV_CTL_ELEM_ACCESS_VOLATILE;
out = 0;
if (in) {
out |= rd;
if (in & WMFW_CTL_FLAG_WRITEABLE)
out |= wr;
if (in & WMFW_CTL_FLAG_VOLATILE)
out |= vol;
} else {
out |= rd | wr | vol;
}
return out;
}
static void hda_cs_dsp_free_kcontrol(struct snd_kcontrol *kctl)
{
struct hda_cs_dsp_coeff_ctl *ctl = (struct hda_cs_dsp_coeff_ctl *)snd_kcontrol_chip(kctl);
struct cs_dsp_coeff_ctl *cs_ctl = ctl->cs_ctl;
/* NULL priv to prevent a double-free in hda_cs_dsp_control_remove() */
cs_ctl->priv = NULL;
kfree(ctl);
}
static void hda_cs_dsp_add_kcontrol(struct cs_dsp_coeff_ctl *cs_ctl,
const struct hda_cs_dsp_ctl_info *info,
const char *name)
{
struct snd_kcontrol_new kcontrol = {0};
struct snd_kcontrol *kctl;
struct hda_cs_dsp_coeff_ctl *ctl __free(kfree) = NULL;
int ret = 0;
if (cs_ctl->len > ADSP_MAX_STD_CTRL_SIZE) {
dev_err(cs_ctl->dsp->dev, "KControl %s: length %zu exceeds maximum %d\n", name,
cs_ctl->len, ADSP_MAX_STD_CTRL_SIZE);
return;
}
ctl = kzalloc(sizeof(*ctl), GFP_KERNEL);
if (!ctl)
return;
ctl->cs_ctl = cs_ctl;
ctl->card = info->card;
kcontrol.name = name;
kcontrol.info = hda_cs_dsp_coeff_info;
kcontrol.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
kcontrol.access = wmfw_convert_flags(cs_ctl->flags);
kcontrol.get = hda_cs_dsp_coeff_get;
kcontrol.put = hda_cs_dsp_coeff_put;
kctl = snd_ctl_new1(&kcontrol, (void *)ctl);
if (!kctl)
return;
kctl->private_free = hda_cs_dsp_free_kcontrol;
ctl->kctl = kctl;
/* snd_ctl_add() calls our private_free on error, which will kfree(ctl) */
cs_ctl->priv = no_free_ptr(ctl);
ret = snd_ctl_add(info->card, kctl);
if (ret) {
dev_err(cs_ctl->dsp->dev, "Failed to add KControl %s = %d\n", kcontrol.name, ret);
return;
}
dev_dbg(cs_ctl->dsp->dev, "Added KControl: %s\n", kcontrol.name);
}
static void hda_cs_dsp_control_add(struct cs_dsp_coeff_ctl *cs_ctl,
const struct hda_cs_dsp_ctl_info *info)
{
struct cs_dsp *cs_dsp = cs_ctl->dsp;
char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
const char *region_name;
int ret;
region_name = cs_dsp_mem_region_name(cs_ctl->alg_region.type);
if (!region_name) {
dev_warn(cs_dsp->dev, "Unknown region type: %d\n", cs_ctl->alg_region.type);
return;
}
ret = scnprintf(name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN, "%s %s %.12s %x", info->device_name,
cs_dsp->name, hda_cs_dsp_fw_text[info->fw_type], cs_ctl->alg_region.alg);
if (cs_ctl->subname) {
int avail = SNDRV_CTL_ELEM_ID_NAME_MAXLEN - ret - 2;
int skip = 0;
/* Truncate the subname from the start if it is too long */
if (cs_ctl->subname_len > avail)
skip = cs_ctl->subname_len - avail;
snprintf(name + ret, SNDRV_CTL_ELEM_ID_NAME_MAXLEN - ret,
" %.*s", cs_ctl->subname_len - skip, cs_ctl->subname + skip);
}
hda_cs_dsp_add_kcontrol(cs_ctl, info, name);
}
void hda_cs_dsp_add_controls(struct cs_dsp *dsp, const struct hda_cs_dsp_ctl_info *info)
{
struct cs_dsp_coeff_ctl *cs_ctl;
/*
* pwr_lock would cause mutex inversion with ALSA control lock compared
* to the get/put functions.
* It is safe to walk the list without holding a mutex because entries
* are persistent and only cs_dsp_power_up() or cs_dsp_remove() can
* change the list.
*/
lockdep_assert_not_held(&dsp->pwr_lock);
list_for_each_entry(cs_ctl, &dsp->ctl_list, list) {
if (cs_ctl->flags & WMFW_CTL_FLAG_SYS)
continue;
if (cs_ctl->priv)
continue;
hda_cs_dsp_control_add(cs_ctl, info);
}
}
EXPORT_SYMBOL_NS_GPL(hda_cs_dsp_add_controls, SND_HDA_CS_DSP_CONTROLS);
void hda_cs_dsp_control_remove(struct cs_dsp_coeff_ctl *cs_ctl)
{
struct hda_cs_dsp_coeff_ctl *ctl = cs_ctl->priv;
/* ctl and kctl may already have been removed by ALSA private_free */
if (ctl)
snd_ctl_remove(ctl->card, ctl->kctl);
}
EXPORT_SYMBOL_NS_GPL(hda_cs_dsp_control_remove, SND_HDA_CS_DSP_CONTROLS);
int hda_cs_dsp_write_ctl(struct cs_dsp *dsp, const char *name, int type,
unsigned int alg, const void *buf, size_t len)
{
struct cs_dsp_coeff_ctl *cs_ctl;
int ret;
mutex_lock(&dsp->pwr_lock);
cs_ctl = cs_dsp_get_ctl(dsp, name, type, alg);
ret = cs_dsp_coeff_write_ctrl(cs_ctl, 0, buf, len);
mutex_unlock(&dsp->pwr_lock);
if (ret < 0)
return ret;
return 0;
}
EXPORT_SYMBOL_NS_GPL(hda_cs_dsp_write_ctl, SND_HDA_CS_DSP_CONTROLS);
int hda_cs_dsp_read_ctl(struct cs_dsp *dsp, const char *name, int type,
unsigned int alg, void *buf, size_t len)
{
int ret;
mutex_lock(&dsp->pwr_lock);
ret = cs_dsp_coeff_read_ctrl(cs_dsp_get_ctl(dsp, name, type, alg), 0, buf, len);
mutex_unlock(&dsp->pwr_lock);
return ret;
}
EXPORT_SYMBOL_NS_GPL(hda_cs_dsp_read_ctl, SND_HDA_CS_DSP_CONTROLS);
MODULE_DESCRIPTION("CS_DSP ALSA Control HDA Library");
MODULE_AUTHOR("Stefan Binding, <sbinding@opensource.cirrus.com>");
MODULE_LICENSE("GPL");
MODULE_IMPORT_NS(FW_CS_DSP);
|
