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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * PMac DACA lowlevel functions
4 *
5 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
6 */
7
8
9#include <linux/init.h>
10#include <linux/i2c.h>
11#include <linux/kmod.h>
12#include <linux/slab.h>
13#include <sound/core.h>
14#include "pmac.h"
15
16/* i2c address */
17#define DACA_I2C_ADDR 0x4d
18
19/* registers */
20#define DACA_REG_SR 0x01
21#define DACA_REG_AVOL 0x02
22#define DACA_REG_GCFG 0x03
23
24/* maximum volume value */
25#define DACA_VOL_MAX 0x38
26
27
28struct pmac_daca {
29 struct pmac_keywest i2c;
30 int left_vol, right_vol;
31 unsigned int deemphasis : 1;
32 unsigned int amp_on : 1;
33};
34
35
36/*
37 * initialize / detect DACA
38 */
39static int daca_init_client(struct pmac_keywest *i2c)
40{
41 unsigned short wdata = 0x00;
42 /* SR: no swap, 1bit delay, 32-48kHz */
43 /* GCFG: power amp inverted, DAC on */
44 if (i2c_smbus_write_byte_data(i2c->client, DACA_REG_SR, 0x08) < 0 ||
45 i2c_smbus_write_byte_data(i2c->client, DACA_REG_GCFG, 0x05) < 0)
46 return -EINVAL;
47 return i2c_smbus_write_block_data(i2c->client, DACA_REG_AVOL,
48 2, (unsigned char*)&wdata);
49}
50
51/*
52 * update volume
53 */
54static int daca_set_volume(struct pmac_daca *mix)
55{
56 unsigned char data[2];
57
58 if (! mix->i2c.client)
59 return -ENODEV;
60
61 if (mix->left_vol > DACA_VOL_MAX)
62 data[0] = DACA_VOL_MAX;
63 else
64 data[0] = mix->left_vol;
65 if (mix->right_vol > DACA_VOL_MAX)
66 data[1] = DACA_VOL_MAX;
67 else
68 data[1] = mix->right_vol;
69 data[1] |= mix->deemphasis ? 0x40 : 0;
70 if (i2c_smbus_write_block_data(mix->i2c.client, DACA_REG_AVOL,
71 2, data) < 0) {
72 dev_err(&mix->i2c.client->dev, "failed to set volume\n");
73 return -EINVAL;
74 }
75 return 0;
76}
77
78
79/* deemphasis switch */
80#define daca_info_deemphasis snd_ctl_boolean_mono_info
81
82static int daca_get_deemphasis(struct snd_kcontrol *kcontrol,
83 struct snd_ctl_elem_value *ucontrol)
84{
85 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
86 struct pmac_daca *mix;
87 mix = chip->mixer_data;
88 if (!mix)
89 return -ENODEV;
90 ucontrol->value.integer.value[0] = mix->deemphasis ? 1 : 0;
91 return 0;
92}
93
94static int daca_put_deemphasis(struct snd_kcontrol *kcontrol,
95 struct snd_ctl_elem_value *ucontrol)
96{
97 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
98 struct pmac_daca *mix;
99 int change;
100
101 mix = chip->mixer_data;
102 if (!mix)
103 return -ENODEV;
104 change = mix->deemphasis != ucontrol->value.integer.value[0];
105 if (change) {
106 mix->deemphasis = !!ucontrol->value.integer.value[0];
107 daca_set_volume(mix);
108 }
109 return change;
110}
111
112/* output volume */
113static int daca_info_volume(struct snd_kcontrol *kcontrol,
114 struct snd_ctl_elem_info *uinfo)
115{
116 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
117 uinfo->count = 2;
118 uinfo->value.integer.min = 0;
119 uinfo->value.integer.max = DACA_VOL_MAX;
120 return 0;
121}
122
123static int daca_get_volume(struct snd_kcontrol *kcontrol,
124 struct snd_ctl_elem_value *ucontrol)
125{
126 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
127 struct pmac_daca *mix;
128 mix = chip->mixer_data;
129 if (!mix)
130 return -ENODEV;
131 ucontrol->value.integer.value[0] = mix->left_vol;
132 ucontrol->value.integer.value[1] = mix->right_vol;
133 return 0;
134}
135
136static int daca_put_volume(struct snd_kcontrol *kcontrol,
137 struct snd_ctl_elem_value *ucontrol)
138{
139 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
140 struct pmac_daca *mix;
141 unsigned int vol[2];
142 int change;
143
144 mix = chip->mixer_data;
145 if (!mix)
146 return -ENODEV;
147 vol[0] = ucontrol->value.integer.value[0];
148 vol[1] = ucontrol->value.integer.value[1];
149 if (vol[0] > DACA_VOL_MAX || vol[1] > DACA_VOL_MAX)
150 return -EINVAL;
151 change = mix->left_vol != vol[0] ||
152 mix->right_vol != vol[1];
153 if (change) {
154 mix->left_vol = vol[0];
155 mix->right_vol = vol[1];
156 daca_set_volume(mix);
157 }
158 return change;
159}
160
161/* amplifier switch */
162#define daca_info_amp daca_info_deemphasis
163
164static int daca_get_amp(struct snd_kcontrol *kcontrol,
165 struct snd_ctl_elem_value *ucontrol)
166{
167 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
168 struct pmac_daca *mix;
169 mix = chip->mixer_data;
170 if (!mix)
171 return -ENODEV;
172 ucontrol->value.integer.value[0] = mix->amp_on ? 1 : 0;
173 return 0;
174}
175
176static int daca_put_amp(struct snd_kcontrol *kcontrol,
177 struct snd_ctl_elem_value *ucontrol)
178{
179 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
180 struct pmac_daca *mix;
181 int change;
182
183 mix = chip->mixer_data;
184 if (!mix)
185 return -ENODEV;
186 change = mix->amp_on != ucontrol->value.integer.value[0];
187 if (change) {
188 mix->amp_on = !!ucontrol->value.integer.value[0];
189 i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
190 mix->amp_on ? 0x05 : 0x04);
191 }
192 return change;
193}
194
195static const struct snd_kcontrol_new daca_mixers[] = {
196 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
197 .name = "Deemphasis Switch",
198 .info = daca_info_deemphasis,
199 .get = daca_get_deemphasis,
200 .put = daca_put_deemphasis
201 },
202 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
203 .name = "Master Playback Volume",
204 .info = daca_info_volume,
205 .get = daca_get_volume,
206 .put = daca_put_volume
207 },
208 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
209 .name = "Power Amplifier Switch",
210 .info = daca_info_amp,
211 .get = daca_get_amp,
212 .put = daca_put_amp
213 },
214};
215
216
217#ifdef CONFIG_PM
218static void daca_resume(struct snd_pmac *chip)
219{
220 struct pmac_daca *mix = chip->mixer_data;
221 i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_SR, 0x08);
222 i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
223 mix->amp_on ? 0x05 : 0x04);
224 daca_set_volume(mix);
225}
226#endif /* CONFIG_PM */
227
228
229static void daca_cleanup(struct snd_pmac *chip)
230{
231 struct pmac_daca *mix = chip->mixer_data;
232 if (! mix)
233 return;
234 snd_pmac_keywest_cleanup(&mix->i2c);
235 kfree(mix);
236 chip->mixer_data = NULL;
237}
238
239/* exported */
240int snd_pmac_daca_init(struct snd_pmac *chip)
241{
242 int i, err;
243 struct pmac_daca *mix;
244
245 request_module("i2c-powermac");
246
247 mix = kzalloc(sizeof(*mix), GFP_KERNEL);
248 if (! mix)
249 return -ENOMEM;
250 chip->mixer_data = mix;
251 chip->mixer_free = daca_cleanup;
252 mix->amp_on = 1; /* default on */
253
254 mix->i2c.addr = DACA_I2C_ADDR;
255 mix->i2c.init_client = daca_init_client;
256 mix->i2c.name = "DACA";
257 err = snd_pmac_keywest_init(&mix->i2c);
258 if (err < 0)
259 return err;
260
261 /*
262 * build mixers
263 */
264 strcpy(chip->card->mixername, "PowerMac DACA");
265
266 for (i = 0; i < ARRAY_SIZE(daca_mixers); i++) {
267 err = snd_ctl_add(chip->card, snd_ctl_new1(&daca_mixers[i], chip));
268 if (err < 0)
269 return err;
270 }
271
272#ifdef CONFIG_PM
273 chip->resume = daca_resume;
274#endif
275
276 return 0;
277}
1/*
2 * PMac DACA lowlevel functions
3 *
4 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21
22#include <linux/init.h>
23#include <linux/i2c.h>
24#include <linux/kmod.h>
25#include <linux/slab.h>
26#include <sound/core.h>
27#include "pmac.h"
28
29/* i2c address */
30#define DACA_I2C_ADDR 0x4d
31
32/* registers */
33#define DACA_REG_SR 0x01
34#define DACA_REG_AVOL 0x02
35#define DACA_REG_GCFG 0x03
36
37/* maximum volume value */
38#define DACA_VOL_MAX 0x38
39
40
41struct pmac_daca {
42 struct pmac_keywest i2c;
43 int left_vol, right_vol;
44 unsigned int deemphasis : 1;
45 unsigned int amp_on : 1;
46};
47
48
49/*
50 * initialize / detect DACA
51 */
52static int daca_init_client(struct pmac_keywest *i2c)
53{
54 unsigned short wdata = 0x00;
55 /* SR: no swap, 1bit delay, 32-48kHz */
56 /* GCFG: power amp inverted, DAC on */
57 if (i2c_smbus_write_byte_data(i2c->client, DACA_REG_SR, 0x08) < 0 ||
58 i2c_smbus_write_byte_data(i2c->client, DACA_REG_GCFG, 0x05) < 0)
59 return -EINVAL;
60 return i2c_smbus_write_block_data(i2c->client, DACA_REG_AVOL,
61 2, (unsigned char*)&wdata);
62}
63
64/*
65 * update volume
66 */
67static int daca_set_volume(struct pmac_daca *mix)
68{
69 unsigned char data[2];
70
71 if (! mix->i2c.client)
72 return -ENODEV;
73
74 if (mix->left_vol > DACA_VOL_MAX)
75 data[0] = DACA_VOL_MAX;
76 else
77 data[0] = mix->left_vol;
78 if (mix->right_vol > DACA_VOL_MAX)
79 data[1] = DACA_VOL_MAX;
80 else
81 data[1] = mix->right_vol;
82 data[1] |= mix->deemphasis ? 0x40 : 0;
83 if (i2c_smbus_write_block_data(mix->i2c.client, DACA_REG_AVOL,
84 2, data) < 0) {
85 snd_printk(KERN_ERR "failed to set volume \n");
86 return -EINVAL;
87 }
88 return 0;
89}
90
91
92/* deemphasis switch */
93#define daca_info_deemphasis snd_ctl_boolean_mono_info
94
95static int daca_get_deemphasis(struct snd_kcontrol *kcontrol,
96 struct snd_ctl_elem_value *ucontrol)
97{
98 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
99 struct pmac_daca *mix;
100 if (! (mix = chip->mixer_data))
101 return -ENODEV;
102 ucontrol->value.integer.value[0] = mix->deemphasis ? 1 : 0;
103 return 0;
104}
105
106static int daca_put_deemphasis(struct snd_kcontrol *kcontrol,
107 struct snd_ctl_elem_value *ucontrol)
108{
109 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
110 struct pmac_daca *mix;
111 int change;
112
113 if (! (mix = chip->mixer_data))
114 return -ENODEV;
115 change = mix->deemphasis != ucontrol->value.integer.value[0];
116 if (change) {
117 mix->deemphasis = !!ucontrol->value.integer.value[0];
118 daca_set_volume(mix);
119 }
120 return change;
121}
122
123/* output volume */
124static int daca_info_volume(struct snd_kcontrol *kcontrol,
125 struct snd_ctl_elem_info *uinfo)
126{
127 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
128 uinfo->count = 2;
129 uinfo->value.integer.min = 0;
130 uinfo->value.integer.max = DACA_VOL_MAX;
131 return 0;
132}
133
134static int daca_get_volume(struct snd_kcontrol *kcontrol,
135 struct snd_ctl_elem_value *ucontrol)
136{
137 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
138 struct pmac_daca *mix;
139 if (! (mix = chip->mixer_data))
140 return -ENODEV;
141 ucontrol->value.integer.value[0] = mix->left_vol;
142 ucontrol->value.integer.value[1] = mix->right_vol;
143 return 0;
144}
145
146static int daca_put_volume(struct snd_kcontrol *kcontrol,
147 struct snd_ctl_elem_value *ucontrol)
148{
149 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
150 struct pmac_daca *mix;
151 unsigned int vol[2];
152 int change;
153
154 if (! (mix = chip->mixer_data))
155 return -ENODEV;
156 vol[0] = ucontrol->value.integer.value[0];
157 vol[1] = ucontrol->value.integer.value[1];
158 if (vol[0] > DACA_VOL_MAX || vol[1] > DACA_VOL_MAX)
159 return -EINVAL;
160 change = mix->left_vol != vol[0] ||
161 mix->right_vol != vol[1];
162 if (change) {
163 mix->left_vol = vol[0];
164 mix->right_vol = vol[1];
165 daca_set_volume(mix);
166 }
167 return change;
168}
169
170/* amplifier switch */
171#define daca_info_amp daca_info_deemphasis
172
173static int daca_get_amp(struct snd_kcontrol *kcontrol,
174 struct snd_ctl_elem_value *ucontrol)
175{
176 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
177 struct pmac_daca *mix;
178 if (! (mix = chip->mixer_data))
179 return -ENODEV;
180 ucontrol->value.integer.value[0] = mix->amp_on ? 1 : 0;
181 return 0;
182}
183
184static int daca_put_amp(struct snd_kcontrol *kcontrol,
185 struct snd_ctl_elem_value *ucontrol)
186{
187 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
188 struct pmac_daca *mix;
189 int change;
190
191 if (! (mix = chip->mixer_data))
192 return -ENODEV;
193 change = mix->amp_on != ucontrol->value.integer.value[0];
194 if (change) {
195 mix->amp_on = !!ucontrol->value.integer.value[0];
196 i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
197 mix->amp_on ? 0x05 : 0x04);
198 }
199 return change;
200}
201
202static struct snd_kcontrol_new daca_mixers[] = {
203 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
204 .name = "Deemphasis Switch",
205 .info = daca_info_deemphasis,
206 .get = daca_get_deemphasis,
207 .put = daca_put_deemphasis
208 },
209 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
210 .name = "Master Playback Volume",
211 .info = daca_info_volume,
212 .get = daca_get_volume,
213 .put = daca_put_volume
214 },
215 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
216 .name = "Power Amplifier Switch",
217 .info = daca_info_amp,
218 .get = daca_get_amp,
219 .put = daca_put_amp
220 },
221};
222
223
224#ifdef CONFIG_PM
225static void daca_resume(struct snd_pmac *chip)
226{
227 struct pmac_daca *mix = chip->mixer_data;
228 i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_SR, 0x08);
229 i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
230 mix->amp_on ? 0x05 : 0x04);
231 daca_set_volume(mix);
232}
233#endif /* CONFIG_PM */
234
235
236static void daca_cleanup(struct snd_pmac *chip)
237{
238 struct pmac_daca *mix = chip->mixer_data;
239 if (! mix)
240 return;
241 snd_pmac_keywest_cleanup(&mix->i2c);
242 kfree(mix);
243 chip->mixer_data = NULL;
244}
245
246/* exported */
247int snd_pmac_daca_init(struct snd_pmac *chip)
248{
249 int i, err;
250 struct pmac_daca *mix;
251
252 request_module("i2c-powermac");
253
254 mix = kzalloc(sizeof(*mix), GFP_KERNEL);
255 if (! mix)
256 return -ENOMEM;
257 chip->mixer_data = mix;
258 chip->mixer_free = daca_cleanup;
259 mix->amp_on = 1; /* default on */
260
261 mix->i2c.addr = DACA_I2C_ADDR;
262 mix->i2c.init_client = daca_init_client;
263 mix->i2c.name = "DACA";
264 if ((err = snd_pmac_keywest_init(&mix->i2c)) < 0)
265 return err;
266
267 /*
268 * build mixers
269 */
270 strcpy(chip->card->mixername, "PowerMac DACA");
271
272 for (i = 0; i < ARRAY_SIZE(daca_mixers); i++) {
273 if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&daca_mixers[i], chip))) < 0)
274 return err;
275 }
276
277#ifdef CONFIG_PM
278 chip->resume = daca_resume;
279#endif
280
281 return 0;
282}