Home Home > GIT Browse
summaryrefslogtreecommitdiff
blob: 21b373b2e2600e7f91f7ee680512502f79a96479 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
/*
 *   ALSA driver for ICEnsemble VT17xx
 *
 *   Lowlevel functions for WM8766 codec
 *
 *	Copyright (c) 2012 Ondrej Zary <linux@rainbow-software.org>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <linux/delay.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/tlv.h>
#include "wm8766.h"

/* low-level access */

static void snd_wm8766_write(struct snd_wm8766 *wm, u16 addr, u16 data)
{
	if (addr < WM8766_REG_COUNT)
		wm->regs[addr] = data;
	wm->ops.write(wm, addr, data);
}

/* mixer controls */

static const DECLARE_TLV_DB_SCALE(wm8766_tlv, -12750, 50, 1);

static struct snd_wm8766_ctl snd_wm8766_default_ctl[WM8766_CTL_COUNT] = {
	[WM8766_CTL_CH1_VOL] = {
		.name = "Channel 1 Playback Volume",
		.type = SNDRV_CTL_ELEM_TYPE_INTEGER,
		.tlv = wm8766_tlv,
		.reg1 = WM8766_REG_DACL1,
		.reg2 = WM8766_REG_DACR1,
		.mask1 = WM8766_VOL_MASK,
		.mask2 = WM8766_VOL_MASK,
		.max = 0xff,
		.flags = WM8766_FLAG_STEREO | WM8766_FLAG_VOL_UPDATE,
	},
	[WM8766_CTL_CH2_VOL] = {
		.name = "Channel 2 Playback Volume",
		.type = SNDRV_CTL_ELEM_TYPE_INTEGER,
		.tlv = wm8766_tlv,
		.reg1 = WM8766_REG_DACL2,
		.reg2 = WM8766_REG_DACR2,
		.mask1 = WM8766_VOL_MASK,
		.mask2 = WM8766_VOL_MASK,
		.max = 0xff,
		.flags = WM8766_FLAG_STEREO | WM8766_FLAG_VOL_UPDATE,
	},
	[WM8766_CTL_CH3_VOL] = {
		.name = "Channel 3 Playback Volume",
		.type = SNDRV_CTL_ELEM_TYPE_INTEGER,
		.tlv = wm8766_tlv,
		.reg1 = WM8766_REG_DACL3,
		.reg2 = WM8766_REG_DACR3,
		.mask1 = WM8766_VOL_MASK,
		.mask2 = WM8766_VOL_MASK,
		.max = 0xff,
		.flags = WM8766_FLAG_STEREO | WM8766_FLAG_VOL_UPDATE,
	},
	[WM8766_CTL_CH1_SW] = {
		.name = "Channel 1 Playback Switch",
		.type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
		.reg1 = WM8766_REG_DACCTRL2,
		.mask1 = WM8766_DAC2_MUTE1,
		.flags = WM8766_FLAG_INVERT,
	},
	[WM8766_CTL_CH2_SW] = {
		.name = "Channel 2 Playback Switch",
		.type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
		.reg1 = WM8766_REG_DACCTRL2,
		.mask1 = WM8766_DAC2_MUTE2,
		.flags = WM8766_FLAG_INVERT,
	},
	[WM8766_CTL_CH3_SW] = {
		.name = "Channel 3 Playback Switch",
		.type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
		.reg1 = WM8766_REG_DACCTRL2,
		.mask1 = WM8766_DAC2_MUTE3,
		.flags = WM8766_FLAG_INVERT,
	},
	[WM8766_CTL_PHASE1_SW] = {
		.name = "Channel 1 Phase Invert Playback Switch",
		.type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
		.reg1 = WM8766_REG_IFCTRL,
		.mask1 = WM8766_PHASE_INVERT1,
	},
	[WM8766_CTL_PHASE2_SW] = {
		.name = "Channel 2 Phase Invert Playback Switch",
		.type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
		.reg1 = WM8766_REG_IFCTRL,
		.mask1 = WM8766_PHASE_INVERT2,
	},
	[WM8766_CTL_PHASE3_SW] = {
		.name = "Channel 3 Phase Invert Playback Switch",
		.type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
		.reg1 = WM8766_REG_IFCTRL,
		.mask1 = WM8766_PHASE_INVERT3,
	},
	[WM8766_CTL_DEEMPH1_SW] = {
		.name = "Channel 1 Deemphasis Playback Switch",
		.type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
		.reg1 = WM8766_REG_DACCTRL2,
		.mask1 = WM8766_DAC2_DEEMP1,
	},
	[WM8766_CTL_DEEMPH2_SW] = {
		.name = "Channel 2 Deemphasis Playback Switch",
		.type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
		.reg1 = WM8766_REG_DACCTRL2,
		.mask1 = WM8766_DAC2_DEEMP2,
	},
	[WM8766_CTL_DEEMPH3_SW] = {
		.name = "Channel 3 Deemphasis Playback Switch",
		.type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
		.reg1 = WM8766_REG_DACCTRL2,
		.mask1 = WM8766_DAC2_DEEMP3,
	},
	[WM8766_CTL_IZD_SW] = {
		.name = "Infinite Zero Detect Playback Switch",
		.type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
		.reg1 = WM8766_REG_DACCTRL1,
		.mask1 = WM8766_DAC_IZD,
	},
	[WM8766_CTL_ZC_SW] = {
		.name = "Zero Cross Detect Playback Switch",
		.type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
		.reg1 = WM8766_REG_DACCTRL2,
		.mask1 = WM8766_DAC2_ZCD,
		.flags = WM8766_FLAG_INVERT,
	},
};

/* exported functions */

void snd_wm8766_init(struct snd_wm8766 *wm)
{
	int i;
	static const u16 default_values[] = {
		0x000, 0x100,
		0x120, 0x000,
		0x000, 0x100, 0x000, 0x100, 0x000,
		0x000, 0x080,
	};

	memcpy(wm->ctl, snd_wm8766_default_ctl, sizeof(wm->ctl));

	snd_wm8766_write(wm, WM8766_REG_RESET, 0x00); /* reset */
	udelay(10);
	/* load defaults */
	for (i = 0; i < ARRAY_SIZE(default_values); i++)
		snd_wm8766_write(wm, i, default_values[i]);
}

void snd_wm8766_resume(struct snd_wm8766 *wm)
{
	int i;

	for (i = 0; i < WM8766_REG_COUNT; i++)
		snd_wm8766_write(wm, i, wm->regs[i]);
}

void snd_wm8766_set_if(struct snd_wm8766 *wm, u16 dac)
{
	u16 val = wm->regs[WM8766_REG_IFCTRL] & ~WM8766_IF_MASK;

	dac &= WM8766_IF_MASK;
	snd_wm8766_write(wm, WM8766_REG_IFCTRL, val | dac);
}

void snd_wm8766_set_master_mode(struct snd_wm8766 *wm, u16 mode)
{
	u16 val = wm->regs[WM8766_REG_DACCTRL3] & ~WM8766_DAC3_MSTR_MASK;

	mode &= WM8766_DAC3_MSTR_MASK;
	snd_wm8766_write(wm, WM8766_REG_DACCTRL3, val | mode);
}

void snd_wm8766_set_power(struct snd_wm8766 *wm, u16 power)
{
	u16 val = wm->regs[WM8766_REG_DACCTRL3] & ~WM8766_DAC3_POWER_MASK;

	power &= WM8766_DAC3_POWER_MASK;
	snd_wm8766_write(wm, WM8766_REG_DACCTRL3, val | power);
}

void snd_wm8766_volume_restore(struct snd_wm8766 *wm)
{
	u16 val = wm->regs[WM8766_REG_DACR1];
	/* restore volume after MCLK stopped */
	snd_wm8766_write(wm, WM8766_REG_DACR1, val | WM8766_VOL_UPDATE);
}

/* mixer callbacks */

static int snd_wm8766_volume_info(struct snd_kcontrol *kcontrol,
				   struct snd_ctl_elem_info *uinfo)
{
	struct snd_wm8766 *wm = snd_kcontrol_chip(kcontrol);
	int n = kcontrol->private_value;

	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = (wm->ctl[n].flags & WM8766_FLAG_STEREO) ? 2 : 1;
	uinfo->value.integer.min = wm->ctl[n].min;
	uinfo->value.integer.max = wm->ctl[n].max;

	return 0;
}

static int snd_wm8766_enum_info(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_info *uinfo)
{
	struct snd_wm8766 *wm = snd_kcontrol_chip(kcontrol);
	int n = kcontrol->private_value;

	return snd_ctl_enum_info(uinfo, 1, wm->ctl[n].max,
						wm->ctl[n].enum_names);
}

static int snd_wm8766_ctl_get(struct snd_kcontrol *kcontrol,
				  struct snd_ctl_elem_value *ucontrol)
{
	struct snd_wm8766 *wm = snd_kcontrol_chip(kcontrol);
	int n = kcontrol->private_value;
	u16 val1, val2;

	if (wm->ctl[n].get)
		wm->ctl[n].get(wm, &val1, &val2);
	else {
		val1 = wm->regs[wm->ctl[n].reg1] & wm->ctl[n].mask1;
		val1 >>= __ffs(wm->ctl[n].mask1);
		if (wm->ctl[n].flags & WM8766_FLAG_STEREO) {
			val2 = wm->regs[wm->ctl[n].reg2] & wm->ctl[n].mask2;
			val2 >>= __ffs(wm->ctl[n].mask2);
			if (wm->ctl[n].flags & WM8766_FLAG_VOL_UPDATE)
				val2 &= ~WM8766_VOL_UPDATE;
		}
	}
	if (wm->ctl[n].flags & WM8766_FLAG_INVERT) {
		val1 = wm->ctl[n].max - (val1 - wm->ctl[n].min);
		if (wm->ctl[n].flags & WM8766_FLAG_STEREO)
			val2 = wm->ctl[n].max - (val2 - wm->ctl[n].min);
	}
	ucontrol->value.integer.value[0] = val1;
	if (wm->ctl[n].flags & WM8766_FLAG_STEREO)
		ucontrol->value.integer.value[1] = val2;

	return 0;
}

static int snd_wm8766_ctl_put(struct snd_kcontrol *kcontrol,
				  struct snd_ctl_elem_value *ucontrol)
{
	struct snd_wm8766 *wm = snd_kcontrol_chip(kcontrol);
	int n = kcontrol->private_value;
	u16 val, regval1, regval2;

	/* this also works for enum because value is an union */
	regval1 = ucontrol->value.integer.value[0];
	regval2 = ucontrol->value.integer.value[1];
	if (wm->ctl[n].flags & WM8766_FLAG_INVERT) {
		regval1 = wm->ctl[n].max - (regval1 - wm->ctl[n].min);
		regval2 = wm->ctl[n].max - (regval2 - wm->ctl[n].min);
	}
	if (wm->ctl[n].set)
		wm->ctl[n].set(wm, regval1, regval2);
	else {
		val = wm->regs[wm->ctl[n].reg1] & ~wm->ctl[n].mask1;
		val |= regval1 << __ffs(wm->ctl[n].mask1);
		/* both stereo controls in one register */
		if (wm->ctl[n].flags & WM8766_FLAG_STEREO &&
				wm->ctl[n].reg1 == wm->ctl[n].reg2) {
			val &= ~wm->ctl[n].mask2;
			val |= regval2 << __ffs(wm->ctl[n].mask2);
		}
		snd_wm8766_write(wm, wm->ctl[n].reg1, val);
		/* stereo controls in different registers */
		if (wm->ctl[n].flags & WM8766_FLAG_STEREO &&
				wm->ctl[n].reg1 != wm->ctl[n].reg2) {
			val = wm->regs[wm->ctl[n].reg2] & ~wm->ctl[n].mask2;
			val |= regval2 << __ffs(wm->ctl[n].mask2);
			if (wm->ctl[n].flags & WM8766_FLAG_VOL_UPDATE)
				val |= WM8766_VOL_UPDATE;
			snd_wm8766_write(wm, wm->ctl[n].reg2, val);
		}
	}

	return 0;
}

static int snd_wm8766_add_control(struct snd_wm8766 *wm, int num)
{
	struct snd_kcontrol_new cont;
	struct snd_kcontrol *ctl;

	memset(&cont, 0, sizeof(cont));
	cont.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
	cont.private_value = num;
	cont.name = wm->ctl[num].name;
	cont.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
	if (wm->ctl[num].flags & WM8766_FLAG_LIM ||
	    wm->ctl[num].flags & WM8766_FLAG_ALC)
		cont.access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
	cont.tlv.p = NULL;
	cont.get = snd_wm8766_ctl_get;
	cont.put = snd_wm8766_ctl_put;

	switch (wm->ctl[num].type) {
	case SNDRV_CTL_ELEM_TYPE_INTEGER:
		cont.info = snd_wm8766_volume_info;
		cont.access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
		cont.tlv.p = wm->ctl[num].tlv;
		break;
	case SNDRV_CTL_ELEM_TYPE_BOOLEAN:
		wm->ctl[num].max = 1;
		if (wm->ctl[num].flags & WM8766_FLAG_STEREO)
			cont.info = snd_ctl_boolean_stereo_info;
		else
			cont.info = snd_ctl_boolean_mono_info;
		break;
	case SNDRV_CTL_ELEM_TYPE_ENUMERATED:
		cont.info = snd_wm8766_enum_info;
		break;
	default:
		return -EINVAL;
	}
	ctl = snd_ctl_new1(&cont, wm);
	if (!ctl)
		return -ENOMEM;
	wm->ctl[num].kctl = ctl;

	return snd_ctl_add(wm->card, ctl);
}

int snd_wm8766_build_controls(struct snd_wm8766 *wm)
{
	int err, i;

	for (i = 0; i < WM8766_CTL_COUNT; i++)
		if (wm->ctl[i].name) {
			err = snd_wm8766_add_control(wm, i);
			if (err < 0)
				return err;
		}

	return 0;
}