Commit | Line | Data |
---|---|---|
1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * PMac DACA lowlevel functions | |
4 | * | |
5 | * Copyright (c) by Takashi Iwai <tiwai@suse.de> | |
1da177e4 LT |
6 | */ |
7 | ||
8 | ||
1da177e4 LT |
9 | #include <linux/init.h> |
10 | #include <linux/i2c.h> | |
1da177e4 LT |
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 | ||
65b29f50 TI |
28 | struct pmac_daca { |
29 | struct pmac_keywest i2c; | |
1da177e4 LT |
30 | int left_vol, right_vol; |
31 | unsigned int deemphasis : 1; | |
32 | unsigned int amp_on : 1; | |
65b29f50 | 33 | }; |
1da177e4 LT |
34 | |
35 | ||
36 | /* | |
37 | * initialize / detect DACA | |
38 | */ | |
65b29f50 | 39 | static int daca_init_client(struct pmac_keywest *i2c) |
1da177e4 LT |
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 | */ | |
65b29f50 | 54 | static int daca_set_volume(struct pmac_daca *mix) |
1da177e4 LT |
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) { | |
6da67113 | 72 | snd_printk(KERN_ERR "failed to set volume \n"); |
1da177e4 LT |
73 | return -EINVAL; |
74 | } | |
75 | return 0; | |
76 | } | |
77 | ||
78 | ||
79 | /* deemphasis switch */ | |
a5ce8890 | 80 | #define daca_info_deemphasis snd_ctl_boolean_mono_info |
1da177e4 | 81 | |
65b29f50 TI |
82 | static int daca_get_deemphasis(struct snd_kcontrol *kcontrol, |
83 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 84 | { |
65b29f50 TI |
85 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
86 | struct pmac_daca *mix; | |
e73ad388 TI |
87 | mix = chip->mixer_data; |
88 | if (!mix) | |
1da177e4 LT |
89 | return -ENODEV; |
90 | ucontrol->value.integer.value[0] = mix->deemphasis ? 1 : 0; | |
91 | return 0; | |
92 | } | |
93 | ||
65b29f50 TI |
94 | static int daca_put_deemphasis(struct snd_kcontrol *kcontrol, |
95 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 96 | { |
65b29f50 TI |
97 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
98 | struct pmac_daca *mix; | |
1da177e4 LT |
99 | int change; |
100 | ||
e73ad388 TI |
101 | mix = chip->mixer_data; |
102 | if (!mix) | |
1da177e4 LT |
103 | return -ENODEV; |
104 | change = mix->deemphasis != ucontrol->value.integer.value[0]; | |
105 | if (change) { | |
d4079ac4 | 106 | mix->deemphasis = !!ucontrol->value.integer.value[0]; |
1da177e4 LT |
107 | daca_set_volume(mix); |
108 | } | |
109 | return change; | |
110 | } | |
111 | ||
112 | /* output volume */ | |
65b29f50 TI |
113 | static int daca_info_volume(struct snd_kcontrol *kcontrol, |
114 | struct snd_ctl_elem_info *uinfo) | |
1da177e4 LT |
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 | ||
65b29f50 TI |
123 | static int daca_get_volume(struct snd_kcontrol *kcontrol, |
124 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 125 | { |
65b29f50 TI |
126 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
127 | struct pmac_daca *mix; | |
e73ad388 TI |
128 | mix = chip->mixer_data; |
129 | if (!mix) | |
1da177e4 LT |
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 | ||
65b29f50 TI |
136 | static int daca_put_volume(struct snd_kcontrol *kcontrol, |
137 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 138 | { |
65b29f50 TI |
139 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
140 | struct pmac_daca *mix; | |
d4079ac4 | 141 | unsigned int vol[2]; |
1da177e4 LT |
142 | int change; |
143 | ||
e73ad388 TI |
144 | mix = chip->mixer_data; |
145 | if (!mix) | |
1da177e4 | 146 | return -ENODEV; |
d4079ac4 TI |
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]; | |
1da177e4 | 153 | if (change) { |
d4079ac4 TI |
154 | mix->left_vol = vol[0]; |
155 | mix->right_vol = vol[1]; | |
1da177e4 LT |
156 | daca_set_volume(mix); |
157 | } | |
158 | return change; | |
159 | } | |
160 | ||
161 | /* amplifier switch */ | |
162 | #define daca_info_amp daca_info_deemphasis | |
163 | ||
65b29f50 TI |
164 | static int daca_get_amp(struct snd_kcontrol *kcontrol, |
165 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 166 | { |
65b29f50 TI |
167 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
168 | struct pmac_daca *mix; | |
e73ad388 TI |
169 | mix = chip->mixer_data; |
170 | if (!mix) | |
1da177e4 LT |
171 | return -ENODEV; |
172 | ucontrol->value.integer.value[0] = mix->amp_on ? 1 : 0; | |
173 | return 0; | |
174 | } | |
175 | ||
65b29f50 TI |
176 | static int daca_put_amp(struct snd_kcontrol *kcontrol, |
177 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 178 | { |
65b29f50 TI |
179 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
180 | struct pmac_daca *mix; | |
1da177e4 LT |
181 | int change; |
182 | ||
e73ad388 TI |
183 | mix = chip->mixer_data; |
184 | if (!mix) | |
1da177e4 LT |
185 | return -ENODEV; |
186 | change = mix->amp_on != ucontrol->value.integer.value[0]; | |
187 | if (change) { | |
d4079ac4 | 188 | mix->amp_on = !!ucontrol->value.integer.value[0]; |
1da177e4 LT |
189 | i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG, |
190 | mix->amp_on ? 0x05 : 0x04); | |
191 | } | |
192 | return change; | |
193 | } | |
194 | ||
c031b0cc | 195 | static const struct snd_kcontrol_new daca_mixers[] = { |
1da177e4 LT |
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 | ||
8c870933 | 217 | #ifdef CONFIG_PM |
65b29f50 | 218 | static void daca_resume(struct snd_pmac *chip) |
1da177e4 | 219 | { |
65b29f50 | 220 | struct pmac_daca *mix = chip->mixer_data; |
1da177e4 LT |
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 | } | |
8c870933 | 226 | #endif /* CONFIG_PM */ |
1da177e4 LT |
227 | |
228 | ||
65b29f50 | 229 | static void daca_cleanup(struct snd_pmac *chip) |
1da177e4 | 230 | { |
65b29f50 | 231 | struct pmac_daca *mix = chip->mixer_data; |
1da177e4 LT |
232 | if (! mix) |
233 | return; | |
234 | snd_pmac_keywest_cleanup(&mix->i2c); | |
235 | kfree(mix); | |
236 | chip->mixer_data = NULL; | |
237 | } | |
238 | ||
239 | /* exported */ | |
15afafc2 | 240 | int snd_pmac_daca_init(struct snd_pmac *chip) |
1da177e4 LT |
241 | { |
242 | int i, err; | |
65b29f50 | 243 | struct pmac_daca *mix; |
1da177e4 | 244 | |
0d63e4f9 | 245 | request_module("i2c-powermac"); |
1da177e4 | 246 | |
59feddb2 | 247 | mix = kzalloc(sizeof(*mix), GFP_KERNEL); |
1da177e4 LT |
248 | if (! mix) |
249 | return -ENOMEM; | |
1da177e4 LT |
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"; | |
e73ad388 TI |
257 | err = snd_pmac_keywest_init(&mix->i2c); |
258 | if (err < 0) | |
1da177e4 LT |
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++) { | |
e73ad388 TI |
267 | err = snd_ctl_add(chip->card, snd_ctl_new1(&daca_mixers[i], chip)); |
268 | if (err < 0) | |
1da177e4 LT |
269 | return err; |
270 | } | |
271 | ||
8c870933 | 272 | #ifdef CONFIG_PM |
1da177e4 LT |
273 | chip->resume = daca_resume; |
274 | #endif | |
275 | ||
276 | return 0; | |
277 | } |