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
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
|
/*
* PMac DACA lowlevel functions
*
* Copyright (c) by Takashi Iwai <tiwai@suse.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <sound/driver.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/kmod.h>
#include <linux/slab.h>
#include <sound/core.h>
#include "pmac.h"
/* i2c address */
#define DACA_I2C_ADDR 0x4d
/* registers */
#define DACA_REG_SR 0x01
#define DACA_REG_AVOL 0x02
#define DACA_REG_GCFG 0x03
/* maximum volume value */
#define DACA_VOL_MAX 0x38
struct pmac_daca {
struct pmac_keywest i2c;
int left_vol, right_vol;
unsigned int deemphasis : 1;
unsigned int amp_on : 1;
};
/*
* initialize / detect DACA
*/
static int daca_init_client(struct pmac_keywest *i2c)
{
unsigned short wdata = 0x00;
/* SR: no swap, 1bit delay, 32-48kHz */
/* GCFG: power amp inverted, DAC on */
if (i2c_smbus_write_byte_data(i2c->client, DACA_REG_SR, 0x08) < 0 ||
i2c_smbus_write_byte_data(i2c->client, DACA_REG_GCFG, 0x05) < 0)
return -EINVAL;
return i2c_smbus_write_block_data(i2c->client, DACA_REG_AVOL,
2, (unsigned char*)&wdata);
}
/*
* update volume
*/
static int daca_set_volume(struct pmac_daca *mix)
{
unsigned char data[2];
if (! mix->i2c.client)
return -ENODEV;
if (mix->left_vol > DACA_VOL_MAX)
data[0] = DACA_VOL_MAX;
else
data[0] = mix->left_vol;
if (mix->right_vol > DACA_VOL_MAX)
data[1] = DACA_VOL_MAX;
else
data[1] = mix->right_vol;
data[1] |= mix->deemphasis ? 0x40 : 0;
if (i2c_smbus_write_block_data(mix->i2c.client, DACA_REG_AVOL,
2, data) < 0) {
snd_printk("failed to set volume \n");
return -EINVAL;
}
return 0;
}
/* deemphasis switch */
static int daca_info_deemphasis(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = 1;
return 0;
}
static int daca_get_deemphasis(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
struct pmac_daca *mix;
if (! (mix = chip->mixer_data))
return -ENODEV;
ucontrol->value.integer.value[0] = mix->deemphasis ? 1 : 0;
return 0;
}
static int daca_put_deemphasis(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
struct pmac_daca *mix;
int change;
if (! (mix = chip->mixer_data))
return -ENODEV;
change = mix->deemphasis != ucontrol->value.integer.value[0];
if (change) {
mix->deemphasis = ucontrol->value.integer.value[0];
daca_set_volume(mix);
}
return change;
}
/* output volume */
static int daca_info_volume(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 2;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = DACA_VOL_MAX;
return 0;
}
static int daca_get_volume(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
struct pmac_daca *mix;
if (! (mix = chip->mixer_data))
return -ENODEV;
ucontrol->value.integer.value[0] = mix->left_vol;
ucontrol->value.integer.value[1] = mix->right_vol;
return 0;
}
static int daca_put_volume(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
struct pmac_daca *mix;
int change;
if (! (mix = chip->mixer_data))
return -ENODEV;
change = mix->left_vol != ucontrol->value.integer.value[0] ||
mix->right_vol != ucontrol->value.integer.value[1];
if (change) {
mix->left_vol = ucontrol->value.integer.value[0];
mix->right_vol = ucontrol->value.integer.value[1];
daca_set_volume(mix);
}
return change;
}
/* amplifier switch */
#define daca_info_amp daca_info_deemphasis
static int daca_get_amp(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
struct pmac_daca *mix;
if (! (mix = chip->mixer_data))
return -ENODEV;
ucontrol->value.integer.value[0] = mix->amp_on ? 1 : 0;
return 0;
}
static int daca_put_amp(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
struct pmac_daca *mix;
int change;
if (! (mix = chip->mixer_data))
return -ENODEV;
change = mix->amp_on != ucontrol->value.integer.value[0];
if (change) {
mix->amp_on = ucontrol->value.integer.value[0];
i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
mix->amp_on ? 0x05 : 0x04);
}
return change;
}
static struct snd_kcontrol_new daca_mixers[] = {
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Deemphasis Switch",
.info = daca_info_deemphasis,
.get = daca_get_deemphasis,
.put = daca_put_deemphasis
},
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Master Playback Volume",
.info = daca_info_volume,
.get = daca_get_volume,
.put = daca_put_volume
},
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Power Amplifier Switch",
.info = daca_info_amp,
.get = daca_get_amp,
.put = daca_put_amp
},
};
#ifdef CONFIG_PM
static void daca_resume(struct snd_pmac *chip)
{
struct pmac_daca *mix = chip->mixer_data;
i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_SR, 0x08);
i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
mix->amp_on ? 0x05 : 0x04);
daca_set_volume(mix);
}
#endif /* CONFIG_PM */
static void daca_cleanup(struct snd_pmac *chip)
{
struct pmac_daca *mix = chip->mixer_data;
if (! mix)
return;
snd_pmac_keywest_cleanup(&mix->i2c);
kfree(mix);
chip->mixer_data = NULL;
}
/* exported */
int __init snd_pmac_daca_init(struct snd_pmac *chip)
{
int i, err;
struct pmac_daca *mix;
#ifdef CONFIG_KMOD
if (current->fs->root)
request_module("i2c-powermac");
#endif /* CONFIG_KMOD */
mix = kzalloc(sizeof(*mix), GFP_KERNEL);
if (! mix)
return -ENOMEM;
chip->mixer_data = mix;
chip->mixer_free = daca_cleanup;
mix->amp_on = 1; /* default on */
mix->i2c.addr = DACA_I2C_ADDR;
mix->i2c.init_client = daca_init_client;
mix->i2c.name = "DACA";
if ((err = snd_pmac_keywest_init(&mix->i2c)) < 0)
return err;
/*
* build mixers
*/
strcpy(chip->card->mixername, "PowerMac DACA");
for (i = 0; i < ARRAY_SIZE(daca_mixers); i++) {
if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&daca_mixers[i], chip))) < 0)
return err;
}
#ifdef CONFIG_PM
chip->resume = daca_resume;
#endif
return 0;
}
|
