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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 int 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 break;
103 }
104 }
105 }
106
107 if (val != -1) {
108 regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
109 PCM1681_DEEMPH_RATE_MASK, val << 3);
110 enable = 1;
111 } else {
112 enable = 0;
113 }
114
115 /* enable/disable deemphasis functionality */
116 return regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
117 PCM1681_DEEMPH_MASK, enable);
118}
119
120static int pcm1681_get_deemph(struct snd_kcontrol *kcontrol,
121 struct snd_ctl_elem_value *ucontrol)
122{
123 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
124 struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
125
126 ucontrol->value.integer.value[0] = priv->deemph;
127
128 return 0;
129}
130
131static int pcm1681_put_deemph(struct snd_kcontrol *kcontrol,
132 struct snd_ctl_elem_value *ucontrol)
133{
134 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
135 struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
136
137 priv->deemph = ucontrol->value.integer.value[0];
138
139 return pcm1681_set_deemph(codec);
140}
141
142static int pcm1681_set_dai_fmt(struct snd_soc_dai *codec_dai,
143 unsigned int format)
144{
145 struct snd_soc_codec *codec = codec_dai->codec;
146 struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
147
148 /* The PCM1681 can only be slave to all clocks */
149 if ((format & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
150 dev_err(codec->dev, "Invalid clocking mode\n");
151 return -EINVAL;
152 }
153
154 priv->format = format;
155
156 return 0;
157}
158
159static int pcm1681_digital_mute(struct snd_soc_dai *dai, int mute)
160{
161 struct snd_soc_codec *codec = dai->codec;
162 struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
163 int val;
164
165 if (mute)
166 val = PCM1681_SOFT_MUTE_ALL;
167 else
168 val = 0;
169
170 return regmap_write(priv->regmap, PCM1681_SOFT_MUTE, val);
171}
172
173static int pcm1681_hw_params(struct snd_pcm_substream *substream,
174 struct snd_pcm_hw_params *params,
175 struct snd_soc_dai *dai)
176{
177 struct snd_soc_codec *codec = dai->codec;
178 struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
179 int val = 0, ret;
180
181 priv->rate = params_rate(params);
182
183 switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
184 case SND_SOC_DAIFMT_RIGHT_J:
185 switch (params_width(params)) {
186 case 24:
187 val = 0;
188 break;
189 case 16:
190 val = 3;
191 break;
192 default:
193 return -EINVAL;
194 }
195 break;
196 case SND_SOC_DAIFMT_I2S:
197 val = 0x04;
198 break;
199 case SND_SOC_DAIFMT_LEFT_J:
200 val = 0x05;
201 break;
202 default:
203 dev_err(codec->dev, "Invalid DAI format\n");
204 return -EINVAL;
205 }
206
207 ret = regmap_update_bits(priv->regmap, PCM1681_FMT_CONTROL, 0x0f, val);
208 if (ret < 0)
209 return ret;
210
211 return pcm1681_set_deemph(codec);
212}
213
214static const struct snd_soc_dai_ops pcm1681_dai_ops = {
215 .set_fmt = pcm1681_set_dai_fmt,
216 .hw_params = pcm1681_hw_params,
217 .digital_mute = pcm1681_digital_mute,
218};
219
220static const struct snd_soc_dapm_widget pcm1681_dapm_widgets[] = {
221SND_SOC_DAPM_OUTPUT("VOUT1"),
222SND_SOC_DAPM_OUTPUT("VOUT2"),
223SND_SOC_DAPM_OUTPUT("VOUT3"),
224SND_SOC_DAPM_OUTPUT("VOUT4"),
225SND_SOC_DAPM_OUTPUT("VOUT5"),
226SND_SOC_DAPM_OUTPUT("VOUT6"),
227SND_SOC_DAPM_OUTPUT("VOUT7"),
228SND_SOC_DAPM_OUTPUT("VOUT8"),
229};
230
231static const struct snd_soc_dapm_route pcm1681_dapm_routes[] = {
232 { "VOUT1", NULL, "Playback" },
233 { "VOUT2", NULL, "Playback" },
234 { "VOUT3", NULL, "Playback" },
235 { "VOUT4", NULL, "Playback" },
236 { "VOUT5", NULL, "Playback" },
237 { "VOUT6", NULL, "Playback" },
238 { "VOUT7", NULL, "Playback" },
239 { "VOUT8", NULL, "Playback" },
240};
241
242static const DECLARE_TLV_DB_SCALE(pcm1681_dac_tlv, -6350, 50, 1);
243
244static const struct snd_kcontrol_new pcm1681_controls[] = {
245 SOC_DOUBLE_R_TLV("Channel 1/2 Playback Volume",
246 PCM1681_ATT_CONTROL(1), PCM1681_ATT_CONTROL(2), 0,
247 0x7f, 0, pcm1681_dac_tlv),
248 SOC_DOUBLE_R_TLV("Channel 3/4 Playback Volume",
249 PCM1681_ATT_CONTROL(3), PCM1681_ATT_CONTROL(4), 0,
250 0x7f, 0, pcm1681_dac_tlv),
251 SOC_DOUBLE_R_TLV("Channel 5/6 Playback Volume",
252 PCM1681_ATT_CONTROL(5), PCM1681_ATT_CONTROL(6), 0,
253 0x7f, 0, pcm1681_dac_tlv),
254 SOC_DOUBLE_R_TLV("Channel 7/8 Playback Volume",
255 PCM1681_ATT_CONTROL(7), PCM1681_ATT_CONTROL(8), 0,
256 0x7f, 0, pcm1681_dac_tlv),
257 SOC_SINGLE_BOOL_EXT("De-emphasis Switch", 0,
258 pcm1681_get_deemph, pcm1681_put_deemph),
259};
260
261static struct snd_soc_dai_driver pcm1681_dai = {
262 .name = "pcm1681-hifi",
263 .playback = {
264 .stream_name = "Playback",
265 .channels_min = 2,
266 .channels_max = 8,
267 .rates = PCM1681_PCM_RATES,
268 .formats = PCM1681_PCM_FORMATS,
269 },
270 .ops = &pcm1681_dai_ops,
271};
272
273#ifdef CONFIG_OF
274static const struct of_device_id pcm1681_dt_ids[] = {
275 { .compatible = "ti,pcm1681", },
276 { }
277};
278MODULE_DEVICE_TABLE(of, pcm1681_dt_ids);
279#endif
280
281static const struct regmap_config pcm1681_regmap = {
282 .reg_bits = 8,
283 .val_bits = 8,
284 .max_register = 0x13,
285 .reg_defaults = pcm1681_reg_defaults,
286 .num_reg_defaults = ARRAY_SIZE(pcm1681_reg_defaults),
287 .writeable_reg = pcm1681_writeable_reg,
288 .readable_reg = pcm1681_accessible_reg,
289};
290
291static struct snd_soc_codec_driver soc_codec_dev_pcm1681 = {
292 .component_driver = {
293 .controls = pcm1681_controls,
294 .num_controls = ARRAY_SIZE(pcm1681_controls),
295 .dapm_widgets = pcm1681_dapm_widgets,
296 .num_dapm_widgets = ARRAY_SIZE(pcm1681_dapm_widgets),
297 .dapm_routes = pcm1681_dapm_routes,
298 .num_dapm_routes = ARRAY_SIZE(pcm1681_dapm_routes),
299 },
300};
301
302static const struct i2c_device_id pcm1681_i2c_id[] = {
303 {"pcm1681", 0},
304 {}
305};
306MODULE_DEVICE_TABLE(i2c, pcm1681_i2c_id);
307
308static int pcm1681_i2c_probe(struct i2c_client *client,
309 const struct i2c_device_id *id)
310{
311 int ret;
312 struct pcm1681_private *priv;
313
314 priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
315 if (!priv)
316 return -ENOMEM;
317
318 priv->regmap = devm_regmap_init_i2c(client, &pcm1681_regmap);
319 if (IS_ERR(priv->regmap)) {
320 ret = PTR_ERR(priv->regmap);
321 dev_err(&client->dev, "Failed to create regmap: %d\n", ret);
322 return ret;
323 }
324
325 i2c_set_clientdata(client, priv);
326
327 return snd_soc_register_codec(&client->dev, &soc_codec_dev_pcm1681,
328 &pcm1681_dai, 1);
329}
330
331static int pcm1681_i2c_remove(struct i2c_client *client)
332{
333 snd_soc_unregister_codec(&client->dev);
334 return 0;
335}
336
337static struct i2c_driver pcm1681_i2c_driver = {
338 .driver = {
339 .name = "pcm1681",
340 .of_match_table = of_match_ptr(pcm1681_dt_ids),
341 },
342 .id_table = pcm1681_i2c_id,
343 .probe = pcm1681_i2c_probe,
344 .remove = pcm1681_i2c_remove,
345};
346
347module_i2c_driver(pcm1681_i2c_driver);
348
349MODULE_DESCRIPTION("Texas Instruments PCM1681 ALSA SoC Codec Driver");
350MODULE_AUTHOR("Marek Belisko <marek.belisko@streamunlimited.com>");
351MODULE_LICENSE("GPL");