1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4 * Universal routines for AK4531 codec
5 */
6
7 #include <linux/delay.h>
8 #include <linux/init.h>
9 #include <linux/slab.h>
10 #include <linux/mutex.h>
11 #include <linux/module.h>
12
13 #include <sound/core.h>
14 #include <sound/ak4531_codec.h>
15 #include <sound/tlv.h>
16
17 /*
18 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
19 MODULE_DESCRIPTION("Universal routines for AK4531 codec");
20 MODULE_LICENSE("GPL");
21 */
22
23 static void snd_ak4531_proc_init(struct snd_card *card, struct snd_ak4531 *ak4531);
24
25 /*
26 *
27 */
28
29 #if 0
30
31 static void snd_ak4531_dump(struct snd_ak4531 *ak4531)
32 {
33 int idx;
34
35 for (idx = 0; idx < 0x19; idx++)
36 printk(KERN_DEBUG "ak4531 0x%x: 0x%x\n",
37 idx, ak4531->regs[idx]);
38 }
39
40 #endif
41
42 /*
43 *
44 */
45
46 #define AK4531_SINGLE(xname, xindex, reg, shift, mask, invert) \
47 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
48 .info = snd_ak4531_info_single, \
49 .get = snd_ak4531_get_single, .put = snd_ak4531_put_single, \
50 .private_value = reg | (shift << 16) | (mask << 24) | (invert << 22) }
51 #define AK4531_SINGLE_TLV(xname, xindex, reg, shift, mask, invert, xtlv) \
52 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
53 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
54 .name = xname, .index = xindex, \
55 .info = snd_ak4531_info_single, \
56 .get = snd_ak4531_get_single, .put = snd_ak4531_put_single, \
57 .private_value = reg | (shift << 16) | (mask << 24) | (invert << 22), \
58 .tlv = { .p = (xtlv) } }
59
snd_ak4531_info_single(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)60 static int snd_ak4531_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
61 {
62 int mask = (kcontrol->private_value >> 24) & 0xff;
63
64 uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
65 uinfo->count = 1;
66 uinfo->value.integer.min = 0;
67 uinfo->value.integer.max = mask;
68 return 0;
69 }
70
snd_ak4531_get_single(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)71 static int snd_ak4531_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
72 {
73 struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
74 int reg = kcontrol->private_value & 0xff;
75 int shift = (kcontrol->private_value >> 16) & 0x07;
76 int mask = (kcontrol->private_value >> 24) & 0xff;
77 int invert = (kcontrol->private_value >> 22) & 1;
78 int val;
79
80 guard(mutex)(&ak4531->reg_mutex);
81 val = (ak4531->regs[reg] >> shift) & mask;
82 if (invert) {
83 val = mask - val;
84 }
85 ucontrol->value.integer.value[0] = val;
86 return 0;
87 }
88
snd_ak4531_put_single(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)89 static int snd_ak4531_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
90 {
91 struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
92 int reg = kcontrol->private_value & 0xff;
93 int shift = (kcontrol->private_value >> 16) & 0x07;
94 int mask = (kcontrol->private_value >> 24) & 0xff;
95 int invert = (kcontrol->private_value >> 22) & 1;
96 int change;
97 int val;
98
99 val = ucontrol->value.integer.value[0] & mask;
100 if (invert) {
101 val = mask - val;
102 }
103 val <<= shift;
104 guard(mutex)(&ak4531->reg_mutex);
105 val = (ak4531->regs[reg] & ~(mask << shift)) | val;
106 change = val != ak4531->regs[reg];
107 ak4531->write(ak4531, reg, ak4531->regs[reg] = val);
108 return change;
109 }
110
111 #define AK4531_DOUBLE(xname, xindex, left_reg, right_reg, left_shift, right_shift, mask, invert) \
112 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
113 .info = snd_ak4531_info_double, \
114 .get = snd_ak4531_get_double, .put = snd_ak4531_put_double, \
115 .private_value = left_reg | (right_reg << 8) | (left_shift << 16) | (right_shift << 19) | (mask << 24) | (invert << 22) }
116 #define AK4531_DOUBLE_TLV(xname, xindex, left_reg, right_reg, left_shift, right_shift, mask, invert, xtlv) \
117 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
118 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
119 .name = xname, .index = xindex, \
120 .info = snd_ak4531_info_double, \
121 .get = snd_ak4531_get_double, .put = snd_ak4531_put_double, \
122 .private_value = left_reg | (right_reg << 8) | (left_shift << 16) | (right_shift << 19) | (mask << 24) | (invert << 22), \
123 .tlv = { .p = (xtlv) } }
124
snd_ak4531_info_double(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)125 static int snd_ak4531_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
126 {
127 int mask = (kcontrol->private_value >> 24) & 0xff;
128
129 uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
130 uinfo->count = 2;
131 uinfo->value.integer.min = 0;
132 uinfo->value.integer.max = mask;
133 return 0;
134 }
135
snd_ak4531_get_double(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)136 static int snd_ak4531_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
137 {
138 struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
139 int left_reg = kcontrol->private_value & 0xff;
140 int right_reg = (kcontrol->private_value >> 8) & 0xff;
141 int left_shift = (kcontrol->private_value >> 16) & 0x07;
142 int right_shift = (kcontrol->private_value >> 19) & 0x07;
143 int mask = (kcontrol->private_value >> 24) & 0xff;
144 int invert = (kcontrol->private_value >> 22) & 1;
145 int left, right;
146
147 guard(mutex)(&ak4531->reg_mutex);
148 left = (ak4531->regs[left_reg] >> left_shift) & mask;
149 right = (ak4531->regs[right_reg] >> right_shift) & mask;
150 if (invert) {
151 left = mask - left;
152 right = mask - right;
153 }
154 ucontrol->value.integer.value[0] = left;
155 ucontrol->value.integer.value[1] = right;
156 return 0;
157 }
158
snd_ak4531_put_double(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)159 static int snd_ak4531_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
160 {
161 struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
162 int left_reg = kcontrol->private_value & 0xff;
163 int right_reg = (kcontrol->private_value >> 8) & 0xff;
164 int left_shift = (kcontrol->private_value >> 16) & 0x07;
165 int right_shift = (kcontrol->private_value >> 19) & 0x07;
166 int mask = (kcontrol->private_value >> 24) & 0xff;
167 int invert = (kcontrol->private_value >> 22) & 1;
168 int change;
169 int left, right;
170
171 left = ucontrol->value.integer.value[0] & mask;
172 right = ucontrol->value.integer.value[1] & mask;
173 if (invert) {
174 left = mask - left;
175 right = mask - right;
176 }
177 left <<= left_shift;
178 right <<= right_shift;
179 guard(mutex)(&ak4531->reg_mutex);
180 if (left_reg == right_reg) {
181 left = (ak4531->regs[left_reg] & ~((mask << left_shift) | (mask << right_shift))) | left | right;
182 change = left != ak4531->regs[left_reg];
183 ak4531->write(ak4531, left_reg, ak4531->regs[left_reg] = left);
184 } else {
185 left = (ak4531->regs[left_reg] & ~(mask << left_shift)) | left;
186 right = (ak4531->regs[right_reg] & ~(mask << right_shift)) | right;
187 change = left != ak4531->regs[left_reg] || right != ak4531->regs[right_reg];
188 ak4531->write(ak4531, left_reg, ak4531->regs[left_reg] = left);
189 ak4531->write(ak4531, right_reg, ak4531->regs[right_reg] = right);
190 }
191 return change;
192 }
193
194 #define AK4531_INPUT_SW(xname, xindex, reg1, reg2, left_shift, right_shift) \
195 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
196 .info = snd_ak4531_info_input_sw, \
197 .get = snd_ak4531_get_input_sw, .put = snd_ak4531_put_input_sw, \
198 .private_value = reg1 | (reg2 << 8) | (left_shift << 16) | (right_shift << 24) }
199
snd_ak4531_info_input_sw(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)200 static int snd_ak4531_info_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
201 {
202 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
203 uinfo->count = 4;
204 uinfo->value.integer.min = 0;
205 uinfo->value.integer.max = 1;
206 return 0;
207 }
208
snd_ak4531_get_input_sw(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)209 static int snd_ak4531_get_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
210 {
211 struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
212 int reg1 = kcontrol->private_value & 0xff;
213 int reg2 = (kcontrol->private_value >> 8) & 0xff;
214 int left_shift = (kcontrol->private_value >> 16) & 0x0f;
215 int right_shift = (kcontrol->private_value >> 24) & 0x0f;
216
217 guard(mutex)(&ak4531->reg_mutex);
218 ucontrol->value.integer.value[0] = (ak4531->regs[reg1] >> left_shift) & 1;
219 ucontrol->value.integer.value[1] = (ak4531->regs[reg2] >> left_shift) & 1;
220 ucontrol->value.integer.value[2] = (ak4531->regs[reg1] >> right_shift) & 1;
221 ucontrol->value.integer.value[3] = (ak4531->regs[reg2] >> right_shift) & 1;
222 return 0;
223 }
224
snd_ak4531_put_input_sw(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)225 static int snd_ak4531_put_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
226 {
227 struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
228 int reg1 = kcontrol->private_value & 0xff;
229 int reg2 = (kcontrol->private_value >> 8) & 0xff;
230 int left_shift = (kcontrol->private_value >> 16) & 0x0f;
231 int right_shift = (kcontrol->private_value >> 24) & 0x0f;
232 int change;
233 int val1, val2;
234
235 guard(mutex)(&ak4531->reg_mutex);
236 val1 = ak4531->regs[reg1] & ~((1 << left_shift) | (1 << right_shift));
237 val2 = ak4531->regs[reg2] & ~((1 << left_shift) | (1 << right_shift));
238 val1 |= (ucontrol->value.integer.value[0] & 1) << left_shift;
239 val2 |= (ucontrol->value.integer.value[1] & 1) << left_shift;
240 val1 |= (ucontrol->value.integer.value[2] & 1) << right_shift;
241 val2 |= (ucontrol->value.integer.value[3] & 1) << right_shift;
242 change = val1 != ak4531->regs[reg1] || val2 != ak4531->regs[reg2];
243 ak4531->write(ak4531, reg1, ak4531->regs[reg1] = val1);
244 ak4531->write(ak4531, reg2, ak4531->regs[reg2] = val2);
245 return change;
246 }
247
248 static const DECLARE_TLV_DB_SCALE(db_scale_master, -6200, 200, 0);
249 static const DECLARE_TLV_DB_SCALE(db_scale_mono, -2800, 400, 0);
250 static const DECLARE_TLV_DB_SCALE(db_scale_input, -5000, 200, 0);
251
252 static const struct snd_kcontrol_new snd_ak4531_controls[] = {
253
254 AK4531_DOUBLE_TLV("Master Playback Switch", 0,
255 AK4531_LMASTER, AK4531_RMASTER, 7, 7, 1, 1,
256 db_scale_master),
257 AK4531_DOUBLE("Master Playback Volume", 0, AK4531_LMASTER, AK4531_RMASTER, 0, 0, 0x1f, 1),
258
259 AK4531_SINGLE_TLV("Master Mono Playback Switch", 0, AK4531_MONO_OUT, 7, 1, 1,
260 db_scale_mono),
261 AK4531_SINGLE("Master Mono Playback Volume", 0, AK4531_MONO_OUT, 0, 0x07, 1),
262
263 AK4531_DOUBLE("PCM Switch", 0, AK4531_LVOICE, AK4531_RVOICE, 7, 7, 1, 1),
264 AK4531_DOUBLE_TLV("PCM Volume", 0, AK4531_LVOICE, AK4531_RVOICE, 0, 0, 0x1f, 1,
265 db_scale_input),
266 AK4531_DOUBLE("PCM Playback Switch", 0, AK4531_OUT_SW2, AK4531_OUT_SW2, 3, 2, 1, 0),
267 AK4531_DOUBLE("PCM Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 2, 2, 1, 0),
268
269 AK4531_DOUBLE("PCM Switch", 1, AK4531_LFM, AK4531_RFM, 7, 7, 1, 1),
270 AK4531_DOUBLE_TLV("PCM Volume", 1, AK4531_LFM, AK4531_RFM, 0, 0, 0x1f, 1,
271 db_scale_input),
272 AK4531_DOUBLE("PCM Playback Switch", 1, AK4531_OUT_SW1, AK4531_OUT_SW1, 6, 5, 1, 0),
273 AK4531_INPUT_SW("PCM Capture Route", 1, AK4531_LIN_SW1, AK4531_RIN_SW1, 6, 5),
274
275 AK4531_DOUBLE("CD Switch", 0, AK4531_LCD, AK4531_RCD, 7, 7, 1, 1),
276 AK4531_DOUBLE_TLV("CD Volume", 0, AK4531_LCD, AK4531_RCD, 0, 0, 0x1f, 1,
277 db_scale_input),
278 AK4531_DOUBLE("CD Playback Switch", 0, AK4531_OUT_SW1, AK4531_OUT_SW1, 2, 1, 1, 0),
279 AK4531_INPUT_SW("CD Capture Route", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 2, 1),
280
281 AK4531_DOUBLE("Line Switch", 0, AK4531_LLINE, AK4531_RLINE, 7, 7, 1, 1),
282 AK4531_DOUBLE_TLV("Line Volume", 0, AK4531_LLINE, AK4531_RLINE, 0, 0, 0x1f, 1,
283 db_scale_input),
284 AK4531_DOUBLE("Line Playback Switch", 0, AK4531_OUT_SW1, AK4531_OUT_SW1, 4, 3, 1, 0),
285 AK4531_INPUT_SW("Line Capture Route", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 4, 3),
286
287 AK4531_DOUBLE("Aux Switch", 0, AK4531_LAUXA, AK4531_RAUXA, 7, 7, 1, 1),
288 AK4531_DOUBLE_TLV("Aux Volume", 0, AK4531_LAUXA, AK4531_RAUXA, 0, 0, 0x1f, 1,
289 db_scale_input),
290 AK4531_DOUBLE("Aux Playback Switch", 0, AK4531_OUT_SW2, AK4531_OUT_SW2, 5, 4, 1, 0),
291 AK4531_INPUT_SW("Aux Capture Route", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 4, 3),
292
293 AK4531_SINGLE("Mono Switch", 0, AK4531_MONO1, 7, 1, 1),
294 AK4531_SINGLE_TLV("Mono Volume", 0, AK4531_MONO1, 0, 0x1f, 1, db_scale_input),
295 AK4531_SINGLE("Mono Playback Switch", 0, AK4531_OUT_SW2, 0, 1, 0),
296 AK4531_DOUBLE("Mono Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 0, 0, 1, 0),
297
298 AK4531_SINGLE("Mono Switch", 1, AK4531_MONO2, 7, 1, 1),
299 AK4531_SINGLE_TLV("Mono Volume", 1, AK4531_MONO2, 0, 0x1f, 1, db_scale_input),
300 AK4531_SINGLE("Mono Playback Switch", 1, AK4531_OUT_SW2, 1, 1, 0),
301 AK4531_DOUBLE("Mono Capture Switch", 1, AK4531_LIN_SW2, AK4531_RIN_SW2, 1, 1, 1, 0),
302
303 AK4531_SINGLE_TLV("Mic Volume", 0, AK4531_MIC, 0, 0x1f, 1, db_scale_input),
304 AK4531_SINGLE("Mic Switch", 0, AK4531_MIC, 7, 1, 1),
305 AK4531_SINGLE("Mic Playback Switch", 0, AK4531_OUT_SW1, 0, 1, 0),
306 AK4531_DOUBLE("Mic Capture Switch", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 0, 0, 1, 0),
307
308 AK4531_DOUBLE("Mic Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 7, 7, 1, 0),
309 AK4531_DOUBLE("Mono1 Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 6, 6, 1, 0),
310 AK4531_DOUBLE("Mono2 Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 5, 5, 1, 0),
311
312 AK4531_SINGLE("AD Input Select", 0, AK4531_AD_IN, 0, 1, 0),
313 AK4531_SINGLE("Mic Boost (+30dB)", 0, AK4531_MIC_GAIN, 0, 1, 0)
314 };
315
snd_ak4531_free(struct snd_ak4531 * ak4531)316 static int snd_ak4531_free(struct snd_ak4531 *ak4531)
317 {
318 if (ak4531) {
319 if (ak4531->private_free)
320 ak4531->private_free(ak4531);
321 kfree(ak4531);
322 }
323 return 0;
324 }
325
snd_ak4531_dev_free(struct snd_device * device)326 static int snd_ak4531_dev_free(struct snd_device *device)
327 {
328 struct snd_ak4531 *ak4531 = device->device_data;
329 return snd_ak4531_free(ak4531);
330 }
331
332 static const u8 snd_ak4531_initial_map[0x19 + 1] = {
333 0x9f, /* 00: Master Volume Lch */
334 0x9f, /* 01: Master Volume Rch */
335 0x9f, /* 02: Voice Volume Lch */
336 0x9f, /* 03: Voice Volume Rch */
337 0x9f, /* 04: FM Volume Lch */
338 0x9f, /* 05: FM Volume Rch */
339 0x9f, /* 06: CD Audio Volume Lch */
340 0x9f, /* 07: CD Audio Volume Rch */
341 0x9f, /* 08: Line Volume Lch */
342 0x9f, /* 09: Line Volume Rch */
343 0x9f, /* 0a: Aux Volume Lch */
344 0x9f, /* 0b: Aux Volume Rch */
345 0x9f, /* 0c: Mono1 Volume */
346 0x9f, /* 0d: Mono2 Volume */
347 0x9f, /* 0e: Mic Volume */
348 0x87, /* 0f: Mono-out Volume */
349 0x00, /* 10: Output Mixer SW1 */
350 0x00, /* 11: Output Mixer SW2 */
351 0x00, /* 12: Lch Input Mixer SW1 */
352 0x00, /* 13: Rch Input Mixer SW1 */
353 0x00, /* 14: Lch Input Mixer SW2 */
354 0x00, /* 15: Rch Input Mixer SW2 */
355 0x00, /* 16: Reset & Power Down */
356 0x00, /* 17: Clock Select */
357 0x00, /* 18: AD Input Select */
358 0x01 /* 19: Mic Amp Setup */
359 };
360
snd_ak4531_mixer(struct snd_card * card,struct snd_ak4531 * _ak4531,struct snd_ak4531 ** rak4531)361 int snd_ak4531_mixer(struct snd_card *card,
362 struct snd_ak4531 *_ak4531,
363 struct snd_ak4531 **rak4531)
364 {
365 unsigned int idx;
366 int err;
367 struct snd_ak4531 *ak4531;
368 static const struct snd_device_ops ops = {
369 .dev_free = snd_ak4531_dev_free,
370 };
371
372 if (snd_BUG_ON(!card || !_ak4531))
373 return -EINVAL;
374 if (rak4531)
375 *rak4531 = NULL;
376 ak4531 = kzalloc_obj(*ak4531);
377 if (ak4531 == NULL)
378 return -ENOMEM;
379 *ak4531 = *_ak4531;
380 mutex_init(&ak4531->reg_mutex);
381 err = snd_component_add(card, "AK4531");
382 if (err < 0) {
383 snd_ak4531_free(ak4531);
384 return err;
385 }
386 strscpy(card->mixername, "Asahi Kasei AK4531");
387 ak4531->write(ak4531, AK4531_RESET, 0x03); /* no RST, PD */
388 udelay(100);
389 ak4531->write(ak4531, AK4531_CLOCK, 0x00); /* CODEC ADC and CODEC DAC use {LR,B}CLK2 and run off LRCLK2 PLL */
390 for (idx = 0; idx <= 0x19; idx++) {
391 if (idx == AK4531_RESET || idx == AK4531_CLOCK)
392 continue;
393 ak4531->write(ak4531, idx, ak4531->regs[idx] = snd_ak4531_initial_map[idx]); /* recording source is mixer */
394 }
395 for (idx = 0; idx < ARRAY_SIZE(snd_ak4531_controls); idx++) {
396 err = snd_ctl_add(card, snd_ctl_new1(&snd_ak4531_controls[idx], ak4531));
397 if (err < 0) {
398 snd_ak4531_free(ak4531);
399 return err;
400 }
401 }
402 snd_ak4531_proc_init(card, ak4531);
403 err = snd_device_new(card, SNDRV_DEV_CODEC, ak4531, &ops);
404 if (err < 0) {
405 snd_ak4531_free(ak4531);
406 return err;
407 }
408
409 #if 0
410 snd_ak4531_dump(ak4531);
411 #endif
412 if (rak4531)
413 *rak4531 = ak4531;
414 return 0;
415 }
416
417 /*
418 * power management
419 */
420 #ifdef CONFIG_PM
snd_ak4531_suspend(struct snd_ak4531 * ak4531)421 void snd_ak4531_suspend(struct snd_ak4531 *ak4531)
422 {
423 /* mute */
424 ak4531->write(ak4531, AK4531_LMASTER, 0x9f);
425 ak4531->write(ak4531, AK4531_RMASTER, 0x9f);
426 /* powerdown */
427 ak4531->write(ak4531, AK4531_RESET, 0x01);
428 }
429
snd_ak4531_resume(struct snd_ak4531 * ak4531)430 void snd_ak4531_resume(struct snd_ak4531 *ak4531)
431 {
432 int idx;
433
434 /* initialize */
435 ak4531->write(ak4531, AK4531_RESET, 0x03);
436 udelay(100);
437 ak4531->write(ak4531, AK4531_CLOCK, 0x00);
438 /* restore mixer registers */
439 for (idx = 0; idx <= 0x19; idx++) {
440 if (idx == AK4531_RESET || idx == AK4531_CLOCK)
441 continue;
442 ak4531->write(ak4531, idx, ak4531->regs[idx]);
443 }
444 }
445 #endif
446
447 /*
448 * /proc interface
449 */
450
snd_ak4531_proc_read(struct snd_info_entry * entry,struct snd_info_buffer * buffer)451 static void snd_ak4531_proc_read(struct snd_info_entry *entry,
452 struct snd_info_buffer *buffer)
453 {
454 struct snd_ak4531 *ak4531 = entry->private_data;
455
456 snd_iprintf(buffer, "Asahi Kasei AK4531\n\n");
457 snd_iprintf(buffer, "Recording source : %s\n"
458 "MIC gain : %s\n",
459 ak4531->regs[AK4531_AD_IN] & 1 ? "external" : "mixer",
460 ak4531->regs[AK4531_MIC_GAIN] & 1 ? "+30dB" : "+0dB");
461 }
462
463 static void
snd_ak4531_proc_init(struct snd_card * card,struct snd_ak4531 * ak4531)464 snd_ak4531_proc_init(struct snd_card *card, struct snd_ak4531 *ak4531)
465 {
466 snd_card_ro_proc_new(card, "ak4531", ak4531, snd_ak4531_proc_read);
467 }
468