wm8731.c (59f7297014b7e96779493f132eed04a3d44565df) wm8731.c (dd31b310b9104327fb6bf7d2fe3b0f0f6fde4dd7)
1/*
2 * wm8731.c -- WM8731 ALSA SoC Audio driver
3 *
4 * Copyright 2005 Openedhand Ltd.
5 *
6 * Author: Richard Purdie <richard@openedhand.com>
7 *
8 * Based on wm8753.c by Liam Girdwood

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41
42/* codec private data */
43struct wm8731_priv {
44 enum snd_soc_control_type control_type;
45 struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES];
46 u16 reg_cache[WM8731_CACHEREGNUM];
47 unsigned int sysclk;
48 int sysclk_type;
1/*
2 * wm8731.c -- WM8731 ALSA SoC Audio driver
3 *
4 * Copyright 2005 Openedhand Ltd.
5 *
6 * Author: Richard Purdie <richard@openedhand.com>
7 *
8 * Based on wm8753.c by Liam Girdwood

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41
42/* codec private data */
43struct wm8731_priv {
44 enum snd_soc_control_type control_type;
45 struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES];
46 u16 reg_cache[WM8731_CACHEREGNUM];
47 unsigned int sysclk;
48 int sysclk_type;
49 int playback_fs;
50 bool deemph;
49};
50
51
52/*
53 * wm8731 register cache
54 * We can't read the WM8731 register space when we are
55 * using 2 wire for device control, so we cache them instead.
56 * There is no point in caching the reset register
57 */
58static const u16 wm8731_reg[WM8731_CACHEREGNUM] = {
59 0x0097, 0x0097, 0x0079, 0x0079,
60 0x000a, 0x0008, 0x009f, 0x000a,
61 0x0000, 0x0000
62};
63
64#define wm8731_reset(c) snd_soc_write(c, WM8731_RESET, 0)
65
66static const char *wm8731_input_select[] = {"Line In", "Mic"};
67
51};
52
53
54/*
55 * wm8731 register cache
56 * We can't read the WM8731 register space when we are
57 * using 2 wire for device control, so we cache them instead.
58 * There is no point in caching the reset register
59 */
60static const u16 wm8731_reg[WM8731_CACHEREGNUM] = {
61 0x0097, 0x0097, 0x0079, 0x0079,
62 0x000a, 0x0008, 0x009f, 0x000a,
63 0x0000, 0x0000
64};
65
66#define wm8731_reset(c) snd_soc_write(c, WM8731_RESET, 0)
67
68static const char *wm8731_input_select[] = {"Line In", "Mic"};
69
68static const char *wm8731_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
69
70static const struct soc_enum wm8731_insel_enum =
71 SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select);
72
70static const struct soc_enum wm8731_insel_enum =
71 SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select);
72
73static const struct soc_enum wm8731_deemph_enum =
74 SOC_ENUM_SINGLE(WM8731_APDIGI, 1, 4, wm8731_deemph);
73static int wm8731_deemph[] = { 0, 32000, 44100, 48000 };
75
74
75static int wm8731_set_deemph(struct snd_soc_codec *codec)
76{
77 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
78 int val, i, best;
76
79
80 /* If we're using deemphasis select the nearest available sample
81 * rate.
82 */
83 if (wm8731->deemph) {
84 best = 1;
85 for (i = 2; i < ARRAY_SIZE(wm8731_deemph); i++) {
86 if (abs(wm8731_deemph[i] - wm8731->playback_fs) <
87 abs(wm8731_deemph[best] - wm8731->playback_fs))
88 best = i;
89 }
90
91 val = best << 1;
92 } else {
93 best = 0;
94 val = 0;
95 }
96
97 dev_dbg(codec->dev, "Set deemphasis %d (%dHz)\n",
98 best, wm8731_deemph[best]);
99
100 return snd_soc_update_bits(codec, WM8731_APDIGI, 0x6, val);
101}
102
103static int wm8731_get_deemph(struct snd_kcontrol *kcontrol,
104 struct snd_ctl_elem_value *ucontrol)
105{
106 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
107 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
108
109 ucontrol->value.enumerated.item[0] = wm8731->deemph;
110
111 return 0;
112}
113
114static int wm8731_put_deemph(struct snd_kcontrol *kcontrol,
115 struct snd_ctl_elem_value *ucontrol)
116{
117 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
118 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
119 int deemph = ucontrol->value.enumerated.item[0];
120 int ret = 0;
121
122 if (deemph > 1)
123 return -EINVAL;
124
125 mutex_lock(&codec->mutex);
126 if (wm8731->deemph != deemph) {
127 wm8731->deemph = deemph;
128
129 wm8731_set_deemph(codec);
130
131 ret = 1;
132 }
133 mutex_unlock(&codec->mutex);
134
135 return ret;
136}
137
77static const DECLARE_TLV_DB_SCALE(in_tlv, -3450, 150, 0);
78static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -1500, 300, 0);
79static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
80static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 2000, 0);
81
82static const struct snd_kcontrol_new wm8731_snd_controls[] = {
83
84SOC_DOUBLE_R_TLV("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V,

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94SOC_SINGLE("Mic Capture Switch", WM8731_APANA, 1, 1, 1),
95
96SOC_SINGLE_TLV("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1,
97 sidetone_tlv),
98
99SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1),
100SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0),
101
138static const DECLARE_TLV_DB_SCALE(in_tlv, -3450, 150, 0);
139static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -1500, 300, 0);
140static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
141static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 2000, 0);
142
143static const struct snd_kcontrol_new wm8731_snd_controls[] = {
144
145SOC_DOUBLE_R_TLV("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V,

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155SOC_SINGLE("Mic Capture Switch", WM8731_APANA, 1, 1, 1),
156
157SOC_SINGLE_TLV("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1,
158 sidetone_tlv),
159
160SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1),
161SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0),
162
102SOC_ENUM("Playback De-emphasis", wm8731_deemph_enum),
163SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0,
164 wm8731_get_deemph, wm8731_put_deemph),
103};
104
105/* Output Mixer */
106static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = {
107SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0),
108SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0),
109SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0),
110};

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238{
239 struct snd_soc_codec *codec = dai->codec;
240 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
241 u16 iface = snd_soc_read(codec, WM8731_IFACE) & 0xfff3;
242 int i = get_coeff(wm8731->sysclk, params_rate(params));
243 u16 srate = (coeff_div[i].sr << 2) |
244 (coeff_div[i].bosr << 1) | coeff_div[i].usb;
245
165};
166
167/* Output Mixer */
168static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = {
169SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0),
170SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0),
171SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0),
172};

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300{
301 struct snd_soc_codec *codec = dai->codec;
302 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
303 u16 iface = snd_soc_read(codec, WM8731_IFACE) & 0xfff3;
304 int i = get_coeff(wm8731->sysclk, params_rate(params));
305 u16 srate = (coeff_div[i].sr << 2) |
306 (coeff_div[i].bosr << 1) | coeff_div[i].usb;
307
308 wm8731->playback_fs = params_rate(params);
309
246 snd_soc_write(codec, WM8731_SRATE, srate);
247
248 /* bit size */
249 switch (params_format(params)) {
250 case SNDRV_PCM_FORMAT_S16_LE:
251 break;
252 case SNDRV_PCM_FORMAT_S20_3LE:
253 iface |= 0x0004;
254 break;
255 case SNDRV_PCM_FORMAT_S24_LE:
256 iface |= 0x0008;
257 break;
258 }
259
310 snd_soc_write(codec, WM8731_SRATE, srate);
311
312 /* bit size */
313 switch (params_format(params)) {
314 case SNDRV_PCM_FORMAT_S16_LE:
315 break;
316 case SNDRV_PCM_FORMAT_S20_3LE:
317 iface |= 0x0004;
318 break;
319 case SNDRV_PCM_FORMAT_S24_LE:
320 iface |= 0x0008;
321 break;
322 }
323
324 wm8731_set_deemph(codec);
325
260 snd_soc_write(codec, WM8731_IFACE, iface);
261 return 0;
262}
263
264static int wm8731_pcm_prepare(struct snd_pcm_substream *substream,
265 struct snd_soc_dai *dai)
266{
267 struct snd_soc_codec *codec = dai->codec;

--- 425 unchanged lines hidden --- 		326 snd_soc_write(codec, WM8731_IFACE, iface);
327 return 0;
328}
329
330static int wm8731_pcm_prepare(struct snd_pcm_substream *substream,
331 struct snd_soc_dai *dai)
332{
333 struct snd_soc_codec *codec = dai->codec;

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