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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * PCM1681 ASoC codec driver
4 *
5 * Copyright (c) StreamUnlimited GmbH 2013
6 * Marek Belisko <marek.belisko@streamunlimited.com>
7 */
8
9#include <linux/module.h>
10#include <linux/slab.h>
11#include <linux/delay.h>
12#include <linux/gpio.h>
13#include <linux/i2c.h>
14#include <linux/regmap.h>
15#include <linux/of.h>
16#include <sound/pcm.h>
17#include <sound/pcm_params.h>
18#include <sound/soc.h>
19#include <sound/tlv.h>
20
21#define PCM1681_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
22 SNDRV_PCM_FMTBIT_S24_LE)
23
24#define PCM1681_PCM_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | \
25 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
26 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | \
27 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000)
28
29#define PCM1681_SOFT_MUTE_ALL 0xff
30#define PCM1681_DEEMPH_RATE_MASK 0x18
31#define PCM1681_DEEMPH_MASK 0x01
32
33#define PCM1681_ATT_CONTROL(X) (X <= 6 ? X : X + 9) /* Attenuation level */
34#define PCM1681_SOFT_MUTE 0x07 /* Soft mute control register */
35#define PCM1681_DAC_CONTROL 0x08 /* DAC operation control */
36#define PCM1681_FMT_CONTROL 0x09 /* Audio interface data format */
37#define PCM1681_DEEMPH_CONTROL 0x0a /* De-emphasis control */
38#define PCM1681_ZERO_DETECT_STATUS 0x0e /* Zero detect status reg */
39
40static const struct reg_default pcm1681_reg_defaults[] = {
41 { 0x01, 0xff },
42 { 0x02, 0xff },
43 { 0x03, 0xff },
44 { 0x04, 0xff },
45 { 0x05, 0xff },
46 { 0x06, 0xff },
47 { 0x07, 0x00 },
48 { 0x08, 0x00 },
49 { 0x09, 0x06 },
50 { 0x0A, 0x00 },
51 { 0x0B, 0xff },
52 { 0x0C, 0x0f },
53 { 0x0D, 0x00 },
54 { 0x10, 0xff },
55 { 0x11, 0xff },
56 { 0x12, 0x00 },
57 { 0x13, 0x00 },
58};
59
60static bool pcm1681_accessible_reg(struct device *dev, unsigned int reg)
61{
62 return !((reg == 0x00) || (reg == 0x0f));
63}
64
65static bool pcm1681_writeable_reg(struct device *dev, unsigned int reg)
66{
67 return pcm1681_accessible_reg(dev, reg) &&
68 (reg != PCM1681_ZERO_DETECT_STATUS);
69}
70
71struct pcm1681_private {
72 struct regmap *regmap;
73 unsigned int format;
74 /* Current deemphasis status */
75 unsigned int deemph;
76 /* Current rate for deemphasis control */
77 unsigned int rate;
78};
79
80static const int pcm1681_deemph[] = { 44100, 48000, 32000 };
81
82static int pcm1681_set_deemph(struct snd_soc_component *component)
83{
84 struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
85 int i, val = -1, enable = 0;
86
87 if (priv->deemph) {
88 for (i = 0; i < ARRAY_SIZE(pcm1681_deemph); i++) {
89 if (pcm1681_deemph[i] == priv->rate) {
90 val = i;
91 break;
92 }
93 }
94 }
95
96 if (val != -1) {
97 regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
98 PCM1681_DEEMPH_RATE_MASK, val << 3);
99 enable = 1;
100 } else {
101 enable = 0;
102 }
103
104 /* enable/disable deemphasis functionality */
105 return regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
106 PCM1681_DEEMPH_MASK, enable);
107}
108
109static int pcm1681_get_deemph(struct snd_kcontrol *kcontrol,
110 struct snd_ctl_elem_value *ucontrol)
111{
112 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
113 struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
114
115 ucontrol->value.integer.value[0] = priv->deemph;
116
117 return 0;
118}
119
120static int pcm1681_put_deemph(struct snd_kcontrol *kcontrol,
121 struct snd_ctl_elem_value *ucontrol)
122{
123 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
124 struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
125
126 priv->deemph = ucontrol->value.integer.value[0];
127
128 return pcm1681_set_deemph(component);
129}
130
131static int pcm1681_set_dai_fmt(struct snd_soc_dai *codec_dai,
132 unsigned int format)
133{
134 struct snd_soc_component *component = codec_dai->component;
135 struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
136
137 /* The PCM1681 can only be consumer to all clocks */
138 if ((format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) != SND_SOC_DAIFMT_CBC_CFC) {
139 dev_err(component->dev, "Invalid clocking mode\n");
140 return -EINVAL;
141 }
142
143 priv->format = format;
144
145 return 0;
146}
147
148static int pcm1681_mute(struct snd_soc_dai *dai, int mute, int direction)
149{
150 struct snd_soc_component *component = dai->component;
151 struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
152 int val;
153
154 if (mute)
155 val = PCM1681_SOFT_MUTE_ALL;
156 else
157 val = 0;
158
159 return regmap_write(priv->regmap, PCM1681_SOFT_MUTE, val);
160}
161
162static int pcm1681_hw_params(struct snd_pcm_substream *substream,
163 struct snd_pcm_hw_params *params,
164 struct snd_soc_dai *dai)
165{
166 struct snd_soc_component *component = dai->component;
167 struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
168 int val = 0, ret;
169
170 priv->rate = params_rate(params);
171
172 switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
173 case SND_SOC_DAIFMT_RIGHT_J:
174 switch (params_width(params)) {
175 case 24:
176 val = 0;
177 break;
178 case 16:
179 val = 3;
180 break;
181 default:
182 return -EINVAL;
183 }
184 break;
185 case SND_SOC_DAIFMT_I2S:
186 val = 0x04;
187 break;
188 case SND_SOC_DAIFMT_LEFT_J:
189 val = 0x05;
190 break;
191 default:
192 dev_err(component->dev, "Invalid DAI format\n");
193 return -EINVAL;
194 }
195
196 ret = regmap_update_bits(priv->regmap, PCM1681_FMT_CONTROL, 0x0f, val);
197 if (ret < 0)
198 return ret;
199
200 return pcm1681_set_deemph(component);
201}
202
203static const struct snd_soc_dai_ops pcm1681_dai_ops = {
204 .set_fmt = pcm1681_set_dai_fmt,
205 .hw_params = pcm1681_hw_params,
206 .mute_stream = pcm1681_mute,
207 .no_capture_mute = 1,
208};
209
210static const struct snd_soc_dapm_widget pcm1681_dapm_widgets[] = {
211SND_SOC_DAPM_OUTPUT("VOUT1"),
212SND_SOC_DAPM_OUTPUT("VOUT2"),
213SND_SOC_DAPM_OUTPUT("VOUT3"),
214SND_SOC_DAPM_OUTPUT("VOUT4"),
215SND_SOC_DAPM_OUTPUT("VOUT5"),
216SND_SOC_DAPM_OUTPUT("VOUT6"),
217SND_SOC_DAPM_OUTPUT("VOUT7"),
218SND_SOC_DAPM_OUTPUT("VOUT8"),
219};
220
221static const struct snd_soc_dapm_route pcm1681_dapm_routes[] = {
222 { "VOUT1", NULL, "Playback" },
223 { "VOUT2", NULL, "Playback" },
224 { "VOUT3", NULL, "Playback" },
225 { "VOUT4", NULL, "Playback" },
226 { "VOUT5", NULL, "Playback" },
227 { "VOUT6", NULL, "Playback" },
228 { "VOUT7", NULL, "Playback" },
229 { "VOUT8", NULL, "Playback" },
230};
231
232static const DECLARE_TLV_DB_SCALE(pcm1681_dac_tlv, -6350, 50, 1);
233
234static const struct snd_kcontrol_new pcm1681_controls[] = {
235 SOC_DOUBLE_R_TLV("Channel 1/2 Playback Volume",
236 PCM1681_ATT_CONTROL(1), PCM1681_ATT_CONTROL(2), 0,
237 0x7f, 0, pcm1681_dac_tlv),
238 SOC_DOUBLE_R_TLV("Channel 3/4 Playback Volume",
239 PCM1681_ATT_CONTROL(3), PCM1681_ATT_CONTROL(4), 0,
240 0x7f, 0, pcm1681_dac_tlv),
241 SOC_DOUBLE_R_TLV("Channel 5/6 Playback Volume",
242 PCM1681_ATT_CONTROL(5), PCM1681_ATT_CONTROL(6), 0,
243 0x7f, 0, pcm1681_dac_tlv),
244 SOC_DOUBLE_R_TLV("Channel 7/8 Playback Volume",
245 PCM1681_ATT_CONTROL(7), PCM1681_ATT_CONTROL(8), 0,
246 0x7f, 0, pcm1681_dac_tlv),
247 SOC_SINGLE_BOOL_EXT("De-emphasis Switch", 0,
248 pcm1681_get_deemph, pcm1681_put_deemph),
249};
250
251static struct snd_soc_dai_driver pcm1681_dai = {
252 .name = "pcm1681-hifi",
253 .playback = {
254 .stream_name = "Playback",
255 .channels_min = 2,
256 .channels_max = 8,
257 .rates = PCM1681_PCM_RATES,
258 .formats = PCM1681_PCM_FORMATS,
259 },
260 .ops = &pcm1681_dai_ops,
261};
262
263#ifdef CONFIG_OF
264static const struct of_device_id pcm1681_dt_ids[] = {
265 { .compatible = "ti,pcm1681", },
266 { }
267};
268MODULE_DEVICE_TABLE(of, pcm1681_dt_ids);
269#endif
270
271static const struct regmap_config pcm1681_regmap = {
272 .reg_bits = 8,
273 .val_bits = 8,
274 .max_register = 0x13,
275 .reg_defaults = pcm1681_reg_defaults,
276 .num_reg_defaults = ARRAY_SIZE(pcm1681_reg_defaults),
277 .writeable_reg = pcm1681_writeable_reg,
278 .readable_reg = pcm1681_accessible_reg,
279};
280
281static const struct snd_soc_component_driver soc_component_dev_pcm1681 = {
282 .controls = pcm1681_controls,
283 .num_controls = ARRAY_SIZE(pcm1681_controls),
284 .dapm_widgets = pcm1681_dapm_widgets,
285 .num_dapm_widgets = ARRAY_SIZE(pcm1681_dapm_widgets),
286 .dapm_routes = pcm1681_dapm_routes,
287 .num_dapm_routes = ARRAY_SIZE(pcm1681_dapm_routes),
288 .idle_bias_on = 1,
289 .use_pmdown_time = 1,
290 .endianness = 1,
291};
292
293static const struct i2c_device_id pcm1681_i2c_id[] = {
294 {"pcm1681"},
295 {}
296};
297MODULE_DEVICE_TABLE(i2c, pcm1681_i2c_id);
298
299static int pcm1681_i2c_probe(struct i2c_client *client)
300{
301 int ret;
302 struct pcm1681_private *priv;
303
304 priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
305 if (!priv)
306 return -ENOMEM;
307
308 priv->regmap = devm_regmap_init_i2c(client, &pcm1681_regmap);
309 if (IS_ERR(priv->regmap)) {
310 ret = PTR_ERR(priv->regmap);
311 dev_err(&client->dev, "Failed to create regmap: %d\n", ret);
312 return ret;
313 }
314
315 i2c_set_clientdata(client, priv);
316
317 return devm_snd_soc_register_component(&client->dev,
318 &soc_component_dev_pcm1681,
319 &pcm1681_dai, 1);
320}
321
322static struct i2c_driver pcm1681_i2c_driver = {
323 .driver = {
324 .name = "pcm1681",
325 .of_match_table = of_match_ptr(pcm1681_dt_ids),
326 },
327 .id_table = pcm1681_i2c_id,
328 .probe = pcm1681_i2c_probe,
329};
330
331module_i2c_driver(pcm1681_i2c_driver);
332
333MODULE_DESCRIPTION("Texas Instruments PCM1681 ALSA SoC Codec Driver");
334MODULE_AUTHOR("Marek Belisko <marek.belisko@streamunlimited.com>");
335MODULE_LICENSE("GPL");
1/*
2 * PCM1681 ASoC codec driver
3 *
4 * Copyright (c) StreamUnlimited GmbH 2013
5 * Marek Belisko <marek.belisko@streamunlimited.com>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 */
17
18#include <linux/module.h>
19#include <linux/slab.h>
20#include <linux/delay.h>
21#include <linux/gpio.h>
22#include <linux/i2c.h>
23#include <linux/regmap.h>
24#include <linux/of.h>
25#include <linux/of_device.h>
26#include <linux/of_gpio.h>
27#include <sound/pcm.h>
28#include <sound/pcm_params.h>
29#include <sound/soc.h>
30#include <sound/tlv.h>
31
32#define PCM1681_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
33 SNDRV_PCM_FMTBIT_S24_LE)
34
35#define PCM1681_PCM_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | \
36 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
37 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | \
38 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000)
39
40#define PCM1681_SOFT_MUTE_ALL 0xff
41#define PCM1681_DEEMPH_RATE_MASK 0x18
42#define PCM1681_DEEMPH_MASK 0x01
43
44#define PCM1681_ATT_CONTROL(X) (X <= 6 ? X : X + 9) /* Attenuation level */
45#define PCM1681_SOFT_MUTE 0x07 /* Soft mute control register */
46#define PCM1681_DAC_CONTROL 0x08 /* DAC operation control */
47#define PCM1681_FMT_CONTROL 0x09 /* Audio interface data format */
48#define PCM1681_DEEMPH_CONTROL 0x0a /* De-emphasis control */
49#define PCM1681_ZERO_DETECT_STATUS 0x0e /* Zero detect status reg */
50
51static const struct reg_default pcm1681_reg_defaults[] = {
52 { 0x01, 0xff },
53 { 0x02, 0xff },
54 { 0x03, 0xff },
55 { 0x04, 0xff },
56 { 0x05, 0xff },
57 { 0x06, 0xff },
58 { 0x07, 0x00 },
59 { 0x08, 0x00 },
60 { 0x09, 0x06 },
61 { 0x0A, 0x00 },
62 { 0x0B, 0xff },
63 { 0x0C, 0x0f },
64 { 0x0D, 0x00 },
65 { 0x10, 0xff },
66 { 0x11, 0xff },
67 { 0x12, 0x00 },
68 { 0x13, 0x00 },
69};
70
71static bool pcm1681_accessible_reg(struct device *dev, unsigned int reg)
72{
73 return !((reg == 0x00) || (reg == 0x0f));
74}
75
76static bool pcm1681_writeable_reg(struct device *dev, unsigned register reg)
77{
78 return pcm1681_accessible_reg(dev, reg) &&
79 (reg != PCM1681_ZERO_DETECT_STATUS);
80}
81
82struct pcm1681_private {
83 struct regmap *regmap;
84 unsigned int format;
85 /* Current deemphasis status */
86 unsigned int deemph;
87 /* Current rate for deemphasis control */
88 unsigned int rate;
89};
90
91static const int pcm1681_deemph[] = { 44100, 48000, 32000 };
92
93static int pcm1681_set_deemph(struct snd_soc_codec *codec)
94{
95 struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
96 int i = 0, val = -1, enable = 0;
97
98 if (priv->deemph)
99 for (i = 0; i < ARRAY_SIZE(pcm1681_deemph); i++)
100 if (pcm1681_deemph[i] == priv->rate)
101 val = i;
102
103 if (val != -1) {
104 regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
105 PCM1681_DEEMPH_RATE_MASK, val);
106 enable = 1;
107 } else
108 enable = 0;
109
110 /* enable/disable deemphasis functionality */
111 return regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
112 PCM1681_DEEMPH_MASK, enable);
113}
114
115static int pcm1681_get_deemph(struct snd_kcontrol *kcontrol,
116 struct snd_ctl_elem_value *ucontrol)
117{
118 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
119 struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
120
121 ucontrol->value.enumerated.item[0] = priv->deemph;
122
123 return 0;
124}
125
126static int pcm1681_put_deemph(struct snd_kcontrol *kcontrol,
127 struct snd_ctl_elem_value *ucontrol)
128{
129 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
130 struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
131
132 priv->deemph = ucontrol->value.enumerated.item[0];
133
134 return pcm1681_set_deemph(codec);
135}
136
137static int pcm1681_set_dai_fmt(struct snd_soc_dai *codec_dai,
138 unsigned int format)
139{
140 struct snd_soc_codec *codec = codec_dai->codec;
141 struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
142
143 /* The PCM1681 can only be slave to all clocks */
144 if ((format & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
145 dev_err(codec->dev, "Invalid clocking mode\n");
146 return -EINVAL;
147 }
148
149 priv->format = format;
150
151 return 0;
152}
153
154static int pcm1681_digital_mute(struct snd_soc_dai *dai, int mute)
155{
156 struct snd_soc_codec *codec = dai->codec;
157 struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
158 int val;
159
160 if (mute)
161 val = PCM1681_SOFT_MUTE_ALL;
162 else
163 val = 0;
164
165 return regmap_write(priv->regmap, PCM1681_SOFT_MUTE, val);
166}
167
168static int pcm1681_hw_params(struct snd_pcm_substream *substream,
169 struct snd_pcm_hw_params *params,
170 struct snd_soc_dai *dai)
171{
172 struct snd_soc_codec *codec = dai->codec;
173 struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
174 int val = 0, ret;
175
176 priv->rate = params_rate(params);
177
178 switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
179 case SND_SOC_DAIFMT_RIGHT_J:
180 switch (params_width(params)) {
181 case 24:
182 val = 0;
183 break;
184 case 16:
185 val = 3;
186 break;
187 default:
188 return -EINVAL;
189 }
190 break;
191 case SND_SOC_DAIFMT_I2S:
192 val = 0x04;
193 break;
194 case SND_SOC_DAIFMT_LEFT_J:
195 val = 0x05;
196 break;
197 default:
198 dev_err(codec->dev, "Invalid DAI format\n");
199 return -EINVAL;
200 }
201
202 ret = regmap_update_bits(priv->regmap, PCM1681_FMT_CONTROL, 0x0f, val);
203 if (ret < 0)
204 return ret;
205
206 return pcm1681_set_deemph(codec);
207}
208
209static const struct snd_soc_dai_ops pcm1681_dai_ops = {
210 .set_fmt = pcm1681_set_dai_fmt,
211 .hw_params = pcm1681_hw_params,
212 .digital_mute = pcm1681_digital_mute,
213};
214
215static const struct snd_soc_dapm_widget pcm1681_dapm_widgets[] = {
216SND_SOC_DAPM_OUTPUT("VOUT1"),
217SND_SOC_DAPM_OUTPUT("VOUT2"),
218SND_SOC_DAPM_OUTPUT("VOUT3"),
219SND_SOC_DAPM_OUTPUT("VOUT4"),
220SND_SOC_DAPM_OUTPUT("VOUT5"),
221SND_SOC_DAPM_OUTPUT("VOUT6"),
222SND_SOC_DAPM_OUTPUT("VOUT7"),
223SND_SOC_DAPM_OUTPUT("VOUT8"),
224};
225
226static const struct snd_soc_dapm_route pcm1681_dapm_routes[] = {
227 { "VOUT1", NULL, "Playback" },
228 { "VOUT2", NULL, "Playback" },
229 { "VOUT3", NULL, "Playback" },
230 { "VOUT4", NULL, "Playback" },
231 { "VOUT5", NULL, "Playback" },
232 { "VOUT6", NULL, "Playback" },
233 { "VOUT7", NULL, "Playback" },
234 { "VOUT8", NULL, "Playback" },
235};
236
237static const DECLARE_TLV_DB_SCALE(pcm1681_dac_tlv, -6350, 50, 1);
238
239static const struct snd_kcontrol_new pcm1681_controls[] = {
240 SOC_DOUBLE_R_TLV("Channel 1/2 Playback Volume",
241 PCM1681_ATT_CONTROL(1), PCM1681_ATT_CONTROL(2), 0,
242 0x7f, 0, pcm1681_dac_tlv),
243 SOC_DOUBLE_R_TLV("Channel 3/4 Playback Volume",
244 PCM1681_ATT_CONTROL(3), PCM1681_ATT_CONTROL(4), 0,
245 0x7f, 0, pcm1681_dac_tlv),
246 SOC_DOUBLE_R_TLV("Channel 5/6 Playback Volume",
247 PCM1681_ATT_CONTROL(5), PCM1681_ATT_CONTROL(6), 0,
248 0x7f, 0, pcm1681_dac_tlv),
249 SOC_DOUBLE_R_TLV("Channel 7/8 Playback Volume",
250 PCM1681_ATT_CONTROL(7), PCM1681_ATT_CONTROL(8), 0,
251 0x7f, 0, pcm1681_dac_tlv),
252 SOC_SINGLE_BOOL_EXT("De-emphasis Switch", 0,
253 pcm1681_get_deemph, pcm1681_put_deemph),
254};
255
256static struct snd_soc_dai_driver pcm1681_dai = {
257 .name = "pcm1681-hifi",
258 .playback = {
259 .stream_name = "Playback",
260 .channels_min = 2,
261 .channels_max = 8,
262 .rates = PCM1681_PCM_RATES,
263 .formats = PCM1681_PCM_FORMATS,
264 },
265 .ops = &pcm1681_dai_ops,
266};
267
268#ifdef CONFIG_OF
269static const struct of_device_id pcm1681_dt_ids[] = {
270 { .compatible = "ti,pcm1681", },
271 { }
272};
273MODULE_DEVICE_TABLE(of, pcm1681_dt_ids);
274#endif
275
276static const struct regmap_config pcm1681_regmap = {
277 .reg_bits = 8,
278 .val_bits = 8,
279 .max_register = 0x13,
280 .reg_defaults = pcm1681_reg_defaults,
281 .num_reg_defaults = ARRAY_SIZE(pcm1681_reg_defaults),
282 .writeable_reg = pcm1681_writeable_reg,
283 .readable_reg = pcm1681_accessible_reg,
284};
285
286static struct snd_soc_codec_driver soc_codec_dev_pcm1681 = {
287 .controls = pcm1681_controls,
288 .num_controls = ARRAY_SIZE(pcm1681_controls),
289 .dapm_widgets = pcm1681_dapm_widgets,
290 .num_dapm_widgets = ARRAY_SIZE(pcm1681_dapm_widgets),
291 .dapm_routes = pcm1681_dapm_routes,
292 .num_dapm_routes = ARRAY_SIZE(pcm1681_dapm_routes),
293};
294
295static const struct i2c_device_id pcm1681_i2c_id[] = {
296 {"pcm1681", 0},
297 {}
298};
299MODULE_DEVICE_TABLE(i2c, pcm1681_i2c_id);
300
301static int pcm1681_i2c_probe(struct i2c_client *client,
302 const struct i2c_device_id *id)
303{
304 int ret;
305 struct pcm1681_private *priv;
306
307 priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
308 if (!priv)
309 return -ENOMEM;
310
311 priv->regmap = devm_regmap_init_i2c(client, &pcm1681_regmap);
312 if (IS_ERR(priv->regmap)) {
313 ret = PTR_ERR(priv->regmap);
314 dev_err(&client->dev, "Failed to create regmap: %d\n", ret);
315 return ret;
316 }
317
318 i2c_set_clientdata(client, priv);
319
320 return snd_soc_register_codec(&client->dev, &soc_codec_dev_pcm1681,
321 &pcm1681_dai, 1);
322}
323
324static int pcm1681_i2c_remove(struct i2c_client *client)
325{
326 snd_soc_unregister_codec(&client->dev);
327 return 0;
328}
329
330static struct i2c_driver pcm1681_i2c_driver = {
331 .driver = {
332 .name = "pcm1681",
333 .owner = THIS_MODULE,
334 .of_match_table = of_match_ptr(pcm1681_dt_ids),
335 },
336 .id_table = pcm1681_i2c_id,
337 .probe = pcm1681_i2c_probe,
338 .remove = pcm1681_i2c_remove,
339};
340
341module_i2c_driver(pcm1681_i2c_driver);
342
343MODULE_DESCRIPTION("Texas Instruments PCM1681 ALSA SoC Codec Driver");
344MODULE_AUTHOR("Marek Belisko <marek.belisko@streamunlimited.com>");
345MODULE_LICENSE("GPL");