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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; | |
1da177e4 LT |
87 | if (! (mix = chip->mixer_data)) |
88 | return -ENODEV; | |
89 | ucontrol->value.integer.value[0] = mix->deemphasis ? 1 : 0; | |
90 | return 0; | |
91 | } | |
92 | ||
65b29f50 TI |
93 | static int daca_put_deemphasis(struct snd_kcontrol *kcontrol, |
94 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 95 | { |
65b29f50 TI |
96 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
97 | struct pmac_daca *mix; | |
1da177e4 LT |
98 | int change; |
99 | ||
100 | if (! (mix = chip->mixer_data)) | |
101 | return -ENODEV; | |
102 | change = mix->deemphasis != ucontrol->value.integer.value[0]; | |
103 | if (change) { | |
d4079ac4 | 104 | mix->deemphasis = !!ucontrol->value.integer.value[0]; |
1da177e4 LT |
105 | daca_set_volume(mix); |
106 | } | |
107 | return change; | |
108 | } | |
109 | ||
110 | /* output volume */ | |
65b29f50 TI |
111 | static int daca_info_volume(struct snd_kcontrol *kcontrol, |
112 | struct snd_ctl_elem_info *uinfo) | |
1da177e4 LT |
113 | { |
114 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
115 | uinfo->count = 2; | |
116 | uinfo->value.integer.min = 0; | |
117 | uinfo->value.integer.max = DACA_VOL_MAX; | |
118 | return 0; | |
119 | } | |
120 | ||
65b29f50 TI |
121 | static int daca_get_volume(struct snd_kcontrol *kcontrol, |
122 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 123 | { |
65b29f50 TI |
124 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
125 | struct pmac_daca *mix; | |
1da177e4 LT |
126 | if (! (mix = chip->mixer_data)) |
127 | return -ENODEV; | |
128 | ucontrol->value.integer.value[0] = mix->left_vol; | |
129 | ucontrol->value.integer.value[1] = mix->right_vol; | |
130 | return 0; | |
131 | } | |
132 | ||
65b29f50 TI |
133 | static int daca_put_volume(struct snd_kcontrol *kcontrol, |
134 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 135 | { |
65b29f50 TI |
136 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
137 | struct pmac_daca *mix; | |
d4079ac4 | 138 | unsigned int vol[2]; |
1da177e4 LT |
139 | int change; |
140 | ||
141 | if (! (mix = chip->mixer_data)) | |
142 | return -ENODEV; | |
d4079ac4 TI |
143 | vol[0] = ucontrol->value.integer.value[0]; |
144 | vol[1] = ucontrol->value.integer.value[1]; | |
145 | if (vol[0] > DACA_VOL_MAX || vol[1] > DACA_VOL_MAX) | |
146 | return -EINVAL; | |
147 | change = mix->left_vol != vol[0] || | |
148 | mix->right_vol != vol[1]; | |
1da177e4 | 149 | if (change) { |
d4079ac4 TI |
150 | mix->left_vol = vol[0]; |
151 | mix->right_vol = vol[1]; | |
1da177e4 LT |
152 | daca_set_volume(mix); |
153 | } | |
154 | return change; | |
155 | } | |
156 | ||
157 | /* amplifier switch */ | |
158 | #define daca_info_amp daca_info_deemphasis | |
159 | ||
65b29f50 TI |
160 | static int daca_get_amp(struct snd_kcontrol *kcontrol, |
161 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 162 | { |
65b29f50 TI |
163 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
164 | struct pmac_daca *mix; | |
1da177e4 LT |
165 | if (! (mix = chip->mixer_data)) |
166 | return -ENODEV; | |
167 | ucontrol->value.integer.value[0] = mix->amp_on ? 1 : 0; | |
168 | return 0; | |
169 | } | |
170 | ||
65b29f50 TI |
171 | static int daca_put_amp(struct snd_kcontrol *kcontrol, |
172 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 173 | { |
65b29f50 TI |
174 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
175 | struct pmac_daca *mix; | |
1da177e4 LT |
176 | int change; |
177 | ||
178 | if (! (mix = chip->mixer_data)) | |
179 | return -ENODEV; | |
180 | change = mix->amp_on != ucontrol->value.integer.value[0]; | |
181 | if (change) { | |
d4079ac4 | 182 | mix->amp_on = !!ucontrol->value.integer.value[0]; |
1da177e4 LT |
183 | i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG, |
184 | mix->amp_on ? 0x05 : 0x04); | |
185 | } | |
186 | return change; | |
187 | } | |
188 | ||
c031b0cc | 189 | static const struct snd_kcontrol_new daca_mixers[] = { |
1da177e4 LT |
190 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
191 | .name = "Deemphasis Switch", | |
192 | .info = daca_info_deemphasis, | |
193 | .get = daca_get_deemphasis, | |
194 | .put = daca_put_deemphasis | |
195 | }, | |
196 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
197 | .name = "Master Playback Volume", | |
198 | .info = daca_info_volume, | |
199 | .get = daca_get_volume, | |
200 | .put = daca_put_volume | |
201 | }, | |
202 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
203 | .name = "Power Amplifier Switch", | |
204 | .info = daca_info_amp, | |
205 | .get = daca_get_amp, | |
206 | .put = daca_put_amp | |
207 | }, | |
208 | }; | |
209 | ||
210 | ||
8c870933 | 211 | #ifdef CONFIG_PM |
65b29f50 | 212 | static void daca_resume(struct snd_pmac *chip) |
1da177e4 | 213 | { |
65b29f50 | 214 | struct pmac_daca *mix = chip->mixer_data; |
1da177e4 LT |
215 | i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_SR, 0x08); |
216 | i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG, | |
217 | mix->amp_on ? 0x05 : 0x04); | |
218 | daca_set_volume(mix); | |
219 | } | |
8c870933 | 220 | #endif /* CONFIG_PM */ |
1da177e4 LT |
221 | |
222 | ||
65b29f50 | 223 | static void daca_cleanup(struct snd_pmac *chip) |
1da177e4 | 224 | { |
65b29f50 | 225 | struct pmac_daca *mix = chip->mixer_data; |
1da177e4 LT |
226 | if (! mix) |
227 | return; | |
228 | snd_pmac_keywest_cleanup(&mix->i2c); | |
229 | kfree(mix); | |
230 | chip->mixer_data = NULL; | |
231 | } | |
232 | ||
233 | /* exported */ | |
15afafc2 | 234 | int snd_pmac_daca_init(struct snd_pmac *chip) |
1da177e4 LT |
235 | { |
236 | int i, err; | |
65b29f50 | 237 | struct pmac_daca *mix; |
1da177e4 | 238 | |
0d63e4f9 | 239 | request_module("i2c-powermac"); |
1da177e4 | 240 | |
59feddb2 | 241 | mix = kzalloc(sizeof(*mix), GFP_KERNEL); |
1da177e4 LT |
242 | if (! mix) |
243 | return -ENOMEM; | |
1da177e4 LT |
244 | chip->mixer_data = mix; |
245 | chip->mixer_free = daca_cleanup; | |
246 | mix->amp_on = 1; /* default on */ | |
247 | ||
248 | mix->i2c.addr = DACA_I2C_ADDR; | |
249 | mix->i2c.init_client = daca_init_client; | |
250 | mix->i2c.name = "DACA"; | |
251 | if ((err = snd_pmac_keywest_init(&mix->i2c)) < 0) | |
252 | return err; | |
253 | ||
254 | /* | |
255 | * build mixers | |
256 | */ | |
257 | strcpy(chip->card->mixername, "PowerMac DACA"); | |
258 | ||
259 | for (i = 0; i < ARRAY_SIZE(daca_mixers); i++) { | |
260 | if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&daca_mixers[i], chip))) < 0) | |
261 | return err; | |
262 | } | |
263 | ||
8c870933 | 264 | #ifdef CONFIG_PM |
1da177e4 LT |
265 | chip->resume = daca_resume; |
266 | #endif | |
267 | ||
268 | return 0; | |
269 | } |