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 	mutex_lock(&ak4531->reg_mutex);
81 	val = (ak4531->regs[reg] >> shift) & mask;
82 	mutex_unlock(&ak4531->reg_mutex);
83 	if (invert) {
84 		val = mask - val;
85 	}
86 	ucontrol->value.integer.value[0] = val;
87 	return 0;
88 }
89 
snd_ak4531_put_single(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)90 static int snd_ak4531_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
91 {
92 	struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
93 	int reg = kcontrol->private_value & 0xff;
94 	int shift = (kcontrol->private_value >> 16) & 0x07;
95 	int mask = (kcontrol->private_value >> 24) & 0xff;
96 	int invert = (kcontrol->private_value >> 22) & 1;
97 	int change;
98 	int val;
99 
100 	val = ucontrol->value.integer.value[0] & mask;
101 	if (invert) {
102 		val = mask - val;
103 	}
104 	val <<= shift;
105 	mutex_lock(&ak4531->reg_mutex);
106 	val = (ak4531->regs[reg] & ~(mask << shift)) | val;
107 	change = val != ak4531->regs[reg];
108 	ak4531->write(ak4531, reg, ak4531->regs[reg] = val);
109 	mutex_unlock(&ak4531->reg_mutex);
110 	return change;
111 }
112 
113 #define AK4531_DOUBLE(xname, xindex, left_reg, right_reg, left_shift, right_shift, mask, invert) \
114 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
115   .info = snd_ak4531_info_double, \
116   .get = snd_ak4531_get_double, .put = snd_ak4531_put_double, \
117   .private_value = left_reg | (right_reg << 8) | (left_shift << 16) | (right_shift << 19) | (mask << 24) | (invert << 22) }
118 #define AK4531_DOUBLE_TLV(xname, xindex, left_reg, right_reg, left_shift, right_shift, mask, invert, xtlv) \
119 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
120   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
121   .name = xname, .index = xindex, \
122   .info = snd_ak4531_info_double, \
123   .get = snd_ak4531_get_double, .put = snd_ak4531_put_double, \
124   .private_value = left_reg | (right_reg << 8) | (left_shift << 16) | (right_shift << 19) | (mask << 24) | (invert << 22), \
125   .tlv = { .p = (xtlv) } }
126 
snd_ak4531_info_double(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)127 static int snd_ak4531_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
128 {
129 	int mask = (kcontrol->private_value >> 24) & 0xff;
130 
131 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
132 	uinfo->count = 2;
133 	uinfo->value.integer.min = 0;
134 	uinfo->value.integer.max = mask;
135 	return 0;
136 }
137 
snd_ak4531_get_double(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)138 static int snd_ak4531_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
139 {
140 	struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
141 	int left_reg = kcontrol->private_value & 0xff;
142 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
143 	int left_shift = (kcontrol->private_value >> 16) & 0x07;
144 	int right_shift = (kcontrol->private_value >> 19) & 0x07;
145 	int mask = (kcontrol->private_value >> 24) & 0xff;
146 	int invert = (kcontrol->private_value >> 22) & 1;
147 	int left, right;
148 
149 	mutex_lock(&ak4531->reg_mutex);
150 	left = (ak4531->regs[left_reg] >> left_shift) & mask;
151 	right = (ak4531->regs[right_reg] >> right_shift) & mask;
152 	mutex_unlock(&ak4531->reg_mutex);
153 	if (invert) {
154 		left = mask - left;
155 		right = mask - right;
156 	}
157 	ucontrol->value.integer.value[0] = left;
158 	ucontrol->value.integer.value[1] = right;
159 	return 0;
160 }
161 
snd_ak4531_put_double(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)162 static int snd_ak4531_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
163 {
164 	struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
165 	int left_reg = kcontrol->private_value & 0xff;
166 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
167 	int left_shift = (kcontrol->private_value >> 16) & 0x07;
168 	int right_shift = (kcontrol->private_value >> 19) & 0x07;
169 	int mask = (kcontrol->private_value >> 24) & 0xff;
170 	int invert = (kcontrol->private_value >> 22) & 1;
171 	int change;
172 	int left, right;
173 
174 	left = ucontrol->value.integer.value[0] & mask;
175 	right = ucontrol->value.integer.value[1] & mask;
176 	if (invert) {
177 		left = mask - left;
178 		right = mask - right;
179 	}
180 	left <<= left_shift;
181 	right <<= right_shift;
182 	mutex_lock(&ak4531->reg_mutex);
183 	if (left_reg == right_reg) {
184 		left = (ak4531->regs[left_reg] & ~((mask << left_shift) | (mask << right_shift))) | left | right;
185 		change = left != ak4531->regs[left_reg];
186 		ak4531->write(ak4531, left_reg, ak4531->regs[left_reg] = left);
187 	} else {
188 		left = (ak4531->regs[left_reg] & ~(mask << left_shift)) | left;
189 		right = (ak4531->regs[right_reg] & ~(mask << right_shift)) | right;
190 		change = left != ak4531->regs[left_reg] || right != ak4531->regs[right_reg];
191 		ak4531->write(ak4531, left_reg, ak4531->regs[left_reg] = left);
192 		ak4531->write(ak4531, right_reg, ak4531->regs[right_reg] = right);
193 	}
194 	mutex_unlock(&ak4531->reg_mutex);
195 	return change;
196 }
197 
198 #define AK4531_INPUT_SW(xname, xindex, reg1, reg2, left_shift, right_shift) \
199 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
200   .info = snd_ak4531_info_input_sw, \
201   .get = snd_ak4531_get_input_sw, .put = snd_ak4531_put_input_sw, \
202   .private_value = reg1 | (reg2 << 8) | (left_shift << 16) | (right_shift << 24) }
203 
snd_ak4531_info_input_sw(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)204 static int snd_ak4531_info_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
205 {
206 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
207 	uinfo->count = 4;
208 	uinfo->value.integer.min = 0;
209 	uinfo->value.integer.max = 1;
210 	return 0;
211 }
212 
snd_ak4531_get_input_sw(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)213 static int snd_ak4531_get_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
214 {
215 	struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
216 	int reg1 = kcontrol->private_value & 0xff;
217 	int reg2 = (kcontrol->private_value >> 8) & 0xff;
218 	int left_shift = (kcontrol->private_value >> 16) & 0x0f;
219 	int right_shift = (kcontrol->private_value >> 24) & 0x0f;
220 
221 	mutex_lock(&ak4531->reg_mutex);
222 	ucontrol->value.integer.value[0] = (ak4531->regs[reg1] >> left_shift) & 1;
223 	ucontrol->value.integer.value[1] = (ak4531->regs[reg2] >> left_shift) & 1;
224 	ucontrol->value.integer.value[2] = (ak4531->regs[reg1] >> right_shift) & 1;
225 	ucontrol->value.integer.value[3] = (ak4531->regs[reg2] >> right_shift) & 1;
226 	mutex_unlock(&ak4531->reg_mutex);
227 	return 0;
228 }
229 
snd_ak4531_put_input_sw(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)230 static int snd_ak4531_put_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
231 {
232 	struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
233 	int reg1 = kcontrol->private_value & 0xff;
234 	int reg2 = (kcontrol->private_value >> 8) & 0xff;
235 	int left_shift = (kcontrol->private_value >> 16) & 0x0f;
236 	int right_shift = (kcontrol->private_value >> 24) & 0x0f;
237 	int change;
238 	int val1, val2;
239 
240 	mutex_lock(&ak4531->reg_mutex);
241 	val1 = ak4531->regs[reg1] & ~((1 << left_shift) | (1 << right_shift));
242 	val2 = ak4531->regs[reg2] & ~((1 << left_shift) | (1 << right_shift));
243 	val1 |= (ucontrol->value.integer.value[0] & 1) << left_shift;
244 	val2 |= (ucontrol->value.integer.value[1] & 1) << left_shift;
245 	val1 |= (ucontrol->value.integer.value[2] & 1) << right_shift;
246 	val2 |= (ucontrol->value.integer.value[3] & 1) << right_shift;
247 	change = val1 != ak4531->regs[reg1] || val2 != ak4531->regs[reg2];
248 	ak4531->write(ak4531, reg1, ak4531->regs[reg1] = val1);
249 	ak4531->write(ak4531, reg2, ak4531->regs[reg2] = val2);
250 	mutex_unlock(&ak4531->reg_mutex);
251 	return change;
252 }
253 
254 static const DECLARE_TLV_DB_SCALE(db_scale_master, -6200, 200, 0);
255 static const DECLARE_TLV_DB_SCALE(db_scale_mono, -2800, 400, 0);
256 static const DECLARE_TLV_DB_SCALE(db_scale_input, -5000, 200, 0);
257 
258 static const struct snd_kcontrol_new snd_ak4531_controls[] = {
259 
260 AK4531_DOUBLE_TLV("Master Playback Switch", 0,
261 		  AK4531_LMASTER, AK4531_RMASTER, 7, 7, 1, 1,
262 		  db_scale_master),
263 AK4531_DOUBLE("Master Playback Volume", 0, AK4531_LMASTER, AK4531_RMASTER, 0, 0, 0x1f, 1),
264 
265 AK4531_SINGLE_TLV("Master Mono Playback Switch", 0, AK4531_MONO_OUT, 7, 1, 1,
266 		  db_scale_mono),
267 AK4531_SINGLE("Master Mono Playback Volume", 0, AK4531_MONO_OUT, 0, 0x07, 1),
268 
269 AK4531_DOUBLE("PCM Switch", 0, AK4531_LVOICE, AK4531_RVOICE, 7, 7, 1, 1),
270 AK4531_DOUBLE_TLV("PCM Volume", 0, AK4531_LVOICE, AK4531_RVOICE, 0, 0, 0x1f, 1,
271 		  db_scale_input),
272 AK4531_DOUBLE("PCM Playback Switch", 0, AK4531_OUT_SW2, AK4531_OUT_SW2, 3, 2, 1, 0),
273 AK4531_DOUBLE("PCM Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 2, 2, 1, 0),
274 
275 AK4531_DOUBLE("PCM Switch", 1, AK4531_LFM, AK4531_RFM, 7, 7, 1, 1),
276 AK4531_DOUBLE_TLV("PCM Volume", 1, AK4531_LFM, AK4531_RFM, 0, 0, 0x1f, 1,
277 		  db_scale_input),
278 AK4531_DOUBLE("PCM Playback Switch", 1, AK4531_OUT_SW1, AK4531_OUT_SW1, 6, 5, 1, 0),
279 AK4531_INPUT_SW("PCM Capture Route", 1, AK4531_LIN_SW1, AK4531_RIN_SW1, 6, 5),
280 
281 AK4531_DOUBLE("CD Switch", 0, AK4531_LCD, AK4531_RCD, 7, 7, 1, 1),
282 AK4531_DOUBLE_TLV("CD Volume", 0, AK4531_LCD, AK4531_RCD, 0, 0, 0x1f, 1,
283 		  db_scale_input),
284 AK4531_DOUBLE("CD Playback Switch", 0, AK4531_OUT_SW1, AK4531_OUT_SW1, 2, 1, 1, 0),
285 AK4531_INPUT_SW("CD Capture Route", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 2, 1),
286 
287 AK4531_DOUBLE("Line Switch", 0, AK4531_LLINE, AK4531_RLINE, 7, 7, 1, 1),
288 AK4531_DOUBLE_TLV("Line Volume", 0, AK4531_LLINE, AK4531_RLINE, 0, 0, 0x1f, 1,
289 		  db_scale_input),
290 AK4531_DOUBLE("Line Playback Switch", 0, AK4531_OUT_SW1, AK4531_OUT_SW1, 4, 3, 1, 0),
291 AK4531_INPUT_SW("Line Capture Route", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 4, 3),
292 
293 AK4531_DOUBLE("Aux Switch", 0, AK4531_LAUXA, AK4531_RAUXA, 7, 7, 1, 1),
294 AK4531_DOUBLE_TLV("Aux Volume", 0, AK4531_LAUXA, AK4531_RAUXA, 0, 0, 0x1f, 1,
295 		  db_scale_input),
296 AK4531_DOUBLE("Aux Playback Switch", 0, AK4531_OUT_SW2, AK4531_OUT_SW2, 5, 4, 1, 0),
297 AK4531_INPUT_SW("Aux Capture Route", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 4, 3),
298 
299 AK4531_SINGLE("Mono Switch", 0, AK4531_MONO1, 7, 1, 1),
300 AK4531_SINGLE_TLV("Mono Volume", 0, AK4531_MONO1, 0, 0x1f, 1, db_scale_input),
301 AK4531_SINGLE("Mono Playback Switch", 0, AK4531_OUT_SW2, 0, 1, 0),
302 AK4531_DOUBLE("Mono Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 0, 0, 1, 0),
303 
304 AK4531_SINGLE("Mono Switch", 1, AK4531_MONO2, 7, 1, 1),
305 AK4531_SINGLE_TLV("Mono Volume", 1, AK4531_MONO2, 0, 0x1f, 1, db_scale_input),
306 AK4531_SINGLE("Mono Playback Switch", 1, AK4531_OUT_SW2, 1, 1, 0),
307 AK4531_DOUBLE("Mono Capture Switch", 1, AK4531_LIN_SW2, AK4531_RIN_SW2, 1, 1, 1, 0),
308 
309 AK4531_SINGLE_TLV("Mic Volume", 0, AK4531_MIC, 0, 0x1f, 1, db_scale_input),
310 AK4531_SINGLE("Mic Switch", 0, AK4531_MIC, 7, 1, 1),
311 AK4531_SINGLE("Mic Playback Switch", 0, AK4531_OUT_SW1, 0, 1, 0),
312 AK4531_DOUBLE("Mic Capture Switch", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 0, 0, 1, 0),
313 
314 AK4531_DOUBLE("Mic Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 7, 7, 1, 0),
315 AK4531_DOUBLE("Mono1 Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 6, 6, 1, 0),
316 AK4531_DOUBLE("Mono2 Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 5, 5, 1, 0),
317 
318 AK4531_SINGLE("AD Input Select", 0, AK4531_AD_IN, 0, 1, 0),
319 AK4531_SINGLE("Mic Boost (+30dB)", 0, AK4531_MIC_GAIN, 0, 1, 0)
320 };
321 
snd_ak4531_free(struct snd_ak4531 * ak4531)322 static int snd_ak4531_free(struct snd_ak4531 *ak4531)
323 {
324 	if (ak4531) {
325 		if (ak4531->private_free)
326 			ak4531->private_free(ak4531);
327 		kfree(ak4531);
328 	}
329 	return 0;
330 }
331 
snd_ak4531_dev_free(struct snd_device * device)332 static int snd_ak4531_dev_free(struct snd_device *device)
333 {
334 	struct snd_ak4531 *ak4531 = device->device_data;
335 	return snd_ak4531_free(ak4531);
336 }
337 
338 static const u8 snd_ak4531_initial_map[0x19 + 1] = {
339 	0x9f,		/* 00: Master Volume Lch */
340 	0x9f,		/* 01: Master Volume Rch */
341 	0x9f,		/* 02: Voice Volume Lch */
342 	0x9f,		/* 03: Voice Volume Rch */
343 	0x9f,		/* 04: FM Volume Lch */
344 	0x9f,		/* 05: FM Volume Rch */
345 	0x9f,		/* 06: CD Audio Volume Lch */
346 	0x9f,		/* 07: CD Audio Volume Rch */
347 	0x9f,		/* 08: Line Volume Lch */
348 	0x9f,		/* 09: Line Volume Rch */
349 	0x9f,		/* 0a: Aux Volume Lch */
350 	0x9f,		/* 0b: Aux Volume Rch */
351 	0x9f,		/* 0c: Mono1 Volume */
352 	0x9f,		/* 0d: Mono2 Volume */
353 	0x9f,		/* 0e: Mic Volume */
354 	0x87,		/* 0f: Mono-out Volume */
355 	0x00,		/* 10: Output Mixer SW1 */
356 	0x00,		/* 11: Output Mixer SW2 */
357 	0x00,		/* 12: Lch Input Mixer SW1 */
358 	0x00,		/* 13: Rch Input Mixer SW1 */
359 	0x00,		/* 14: Lch Input Mixer SW2 */
360 	0x00,		/* 15: Rch Input Mixer SW2 */
361 	0x00,		/* 16: Reset & Power Down */
362 	0x00,		/* 17: Clock Select */
363 	0x00,		/* 18: AD Input Select */
364 	0x01		/* 19: Mic Amp Setup */
365 };
366 
snd_ak4531_mixer(struct snd_card * card,struct snd_ak4531 * _ak4531,struct snd_ak4531 ** rak4531)367 int snd_ak4531_mixer(struct snd_card *card,
368 		     struct snd_ak4531 *_ak4531,
369 		     struct snd_ak4531 **rak4531)
370 {
371 	unsigned int idx;
372 	int err;
373 	struct snd_ak4531 *ak4531;
374 	static const struct snd_device_ops ops = {
375 		.dev_free =	snd_ak4531_dev_free,
376 	};
377 
378 	if (snd_BUG_ON(!card || !_ak4531))
379 		return -EINVAL;
380 	if (rak4531)
381 		*rak4531 = NULL;
382 	ak4531 = kzalloc(sizeof(*ak4531), GFP_KERNEL);
383 	if (ak4531 == NULL)
384 		return -ENOMEM;
385 	*ak4531 = *_ak4531;
386 	mutex_init(&ak4531->reg_mutex);
387 	err = snd_component_add(card, "AK4531");
388 	if (err < 0) {
389 		snd_ak4531_free(ak4531);
390 		return err;
391 	}
392 	strcpy(card->mixername, "Asahi Kasei AK4531");
393 	ak4531->write(ak4531, AK4531_RESET, 0x03);	/* no RST, PD */
394 	udelay(100);
395 	ak4531->write(ak4531, AK4531_CLOCK, 0x00);	/* CODEC ADC and CODEC DAC use {LR,B}CLK2 and run off LRCLK2 PLL */
396 	for (idx = 0; idx <= 0x19; idx++) {
397 		if (idx == AK4531_RESET || idx == AK4531_CLOCK)
398 			continue;
399 		ak4531->write(ak4531, idx, ak4531->regs[idx] = snd_ak4531_initial_map[idx]);	/* recording source is mixer */
400 	}
401 	for (idx = 0; idx < ARRAY_SIZE(snd_ak4531_controls); idx++) {
402 		err = snd_ctl_add(card, snd_ctl_new1(&snd_ak4531_controls[idx], ak4531));
403 		if (err < 0) {
404 			snd_ak4531_free(ak4531);
405 			return err;
406 		}
407 	}
408 	snd_ak4531_proc_init(card, ak4531);
409 	err = snd_device_new(card, SNDRV_DEV_CODEC, ak4531, &ops);
410 	if (err < 0) {
411 		snd_ak4531_free(ak4531);
412 		return err;
413 	}
414 
415 #if 0
416 	snd_ak4531_dump(ak4531);
417 #endif
418 	if (rak4531)
419 		*rak4531 = ak4531;
420 	return 0;
421 }
422 
423 /*
424  * power management
425  */
426 #ifdef CONFIG_PM
snd_ak4531_suspend(struct snd_ak4531 * ak4531)427 void snd_ak4531_suspend(struct snd_ak4531 *ak4531)
428 {
429 	/* mute */
430 	ak4531->write(ak4531, AK4531_LMASTER, 0x9f);
431 	ak4531->write(ak4531, AK4531_RMASTER, 0x9f);
432 	/* powerdown */
433 	ak4531->write(ak4531, AK4531_RESET, 0x01);
434 }
435 
snd_ak4531_resume(struct snd_ak4531 * ak4531)436 void snd_ak4531_resume(struct snd_ak4531 *ak4531)
437 {
438 	int idx;
439 
440 	/* initialize */
441 	ak4531->write(ak4531, AK4531_RESET, 0x03);
442 	udelay(100);
443 	ak4531->write(ak4531, AK4531_CLOCK, 0x00);
444 	/* restore mixer registers */
445 	for (idx = 0; idx <= 0x19; idx++) {
446 		if (idx == AK4531_RESET || idx == AK4531_CLOCK)
447 			continue;
448 		ak4531->write(ak4531, idx, ak4531->regs[idx]);
449 	}
450 }
451 #endif
452 
453 /*
454  * /proc interface
455  */
456 
snd_ak4531_proc_read(struct snd_info_entry * entry,struct snd_info_buffer * buffer)457 static void snd_ak4531_proc_read(struct snd_info_entry *entry,
458 				 struct snd_info_buffer *buffer)
459 {
460 	struct snd_ak4531 *ak4531 = entry->private_data;
461 
462 	snd_iprintf(buffer, "Asahi Kasei AK4531\n\n");
463 	snd_iprintf(buffer, "Recording source   : %s\n"
464 		    "MIC gain           : %s\n",
465 		    ak4531->regs[AK4531_AD_IN] & 1 ? "external" : "mixer",
466 		    ak4531->regs[AK4531_MIC_GAIN] & 1 ? "+30dB" : "+0dB");
467 }
468 
469 static void
snd_ak4531_proc_init(struct snd_card * card,struct snd_ak4531 * ak4531)470 snd_ak4531_proc_init(struct snd_card *card, struct snd_ak4531 *ak4531)
471 {
472 	snd_card_ro_proc_new(card, "ak4531", ak4531, snd_ak4531_proc_read);
473 }
474