arm64: dts: qcom: sm8550: add TRNG node
[linux-modified.git] / sound / soc / codecs / wm8728.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * wm8728.c  --  WM8728 ALSA SoC Audio driver
4  *
5  * Copyright 2008 Wolfson Microelectronics plc
6  *
7  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
8  */
9
10 #include <linux/mod_devicetable.h>
11 #include <linux/module.h>
12 #include <linux/moduleparam.h>
13 #include <linux/init.h>
14 #include <linux/delay.h>
15 #include <linux/pm.h>
16 #include <linux/i2c.h>
17 #include <linux/platform_device.h>
18 #include <linux/regmap.h>
19 #include <linux/spi/spi.h>
20 #include <linux/slab.h>
21 #include <sound/core.h>
22 #include <sound/pcm.h>
23 #include <sound/pcm_params.h>
24 #include <sound/soc.h>
25 #include <sound/initval.h>
26 #include <sound/tlv.h>
27
28 #include "wm8728.h"
29
30 /*
31  * We can't read the WM8728 register space so we cache them instead.
32  * Note that the defaults here aren't the physical defaults, we latch
33  * the volume update bits, mute the output and enable infinite zero
34  * detect.
35  */
36 static const struct reg_default wm8728_reg_defaults[] = {
37         { 0, 0x1ff },
38         { 1, 0x1ff },
39         { 2, 0x001 },
40         { 3, 0x100 },
41 };
42
43 /* codec private data */
44 struct wm8728_priv {
45         struct regmap *regmap;
46 };
47
48 static const DECLARE_TLV_DB_SCALE(wm8728_tlv, -12750, 50, 1);
49
50 static const struct snd_kcontrol_new wm8728_snd_controls[] = {
51
52 SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8728_DACLVOL, WM8728_DACRVOL,
53                  0, 255, 0, wm8728_tlv),
54
55 SOC_SINGLE("Deemphasis", WM8728_DACCTL, 1, 1, 0),
56 };
57
58 /*
59  * DAPM controls.
60  */
61 static const struct snd_soc_dapm_widget wm8728_dapm_widgets[] = {
62 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SND_SOC_NOPM, 0, 0),
63 SND_SOC_DAPM_OUTPUT("VOUTL"),
64 SND_SOC_DAPM_OUTPUT("VOUTR"),
65 };
66
67 static const struct snd_soc_dapm_route wm8728_intercon[] = {
68         {"VOUTL", NULL, "DAC"},
69         {"VOUTR", NULL, "DAC"},
70 };
71
72 static int wm8728_mute(struct snd_soc_dai *dai, int mute, int direction)
73 {
74         struct snd_soc_component *component = dai->component;
75         u16 mute_reg = snd_soc_component_read(component, WM8728_DACCTL);
76
77         if (mute)
78                 snd_soc_component_write(component, WM8728_DACCTL, mute_reg | 1);
79         else
80                 snd_soc_component_write(component, WM8728_DACCTL, mute_reg & ~1);
81
82         return 0;
83 }
84
85 static int wm8728_hw_params(struct snd_pcm_substream *substream,
86         struct snd_pcm_hw_params *params,
87         struct snd_soc_dai *dai)
88 {
89         struct snd_soc_component *component = dai->component;
90         u16 dac = snd_soc_component_read(component, WM8728_DACCTL);
91
92         dac &= ~0x18;
93
94         switch (params_width(params)) {
95         case 16:
96                 break;
97         case 20:
98                 dac |= 0x10;
99                 break;
100         case 24:
101                 dac |= 0x08;
102                 break;
103         default:
104                 return -EINVAL;
105         }
106
107         snd_soc_component_write(component, WM8728_DACCTL, dac);
108
109         return 0;
110 }
111
112 static int wm8728_set_dai_fmt(struct snd_soc_dai *codec_dai,
113                 unsigned int fmt)
114 {
115         struct snd_soc_component *component = codec_dai->component;
116         u16 iface = snd_soc_component_read(component, WM8728_IFCTL);
117
118         /* Currently only I2S is supported by the driver, though the
119          * hardware is more flexible.
120          */
121         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
122         case SND_SOC_DAIFMT_I2S:
123                 iface |= 1;
124                 break;
125         default:
126                 return -EINVAL;
127         }
128
129         /* The hardware only support full slave mode */
130         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
131         case SND_SOC_DAIFMT_CBS_CFS:
132                 break;
133         default:
134                 return -EINVAL;
135         }
136
137         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
138         case SND_SOC_DAIFMT_NB_NF:
139                 iface &= ~0x22;
140                 break;
141         case SND_SOC_DAIFMT_IB_NF:
142                 iface |=  0x20;
143                 iface &= ~0x02;
144                 break;
145         case SND_SOC_DAIFMT_NB_IF:
146                 iface |= 0x02;
147                 iface &= ~0x20;
148                 break;
149         case SND_SOC_DAIFMT_IB_IF:
150                 iface |= 0x22;
151                 break;
152         default:
153                 return -EINVAL;
154         }
155
156         snd_soc_component_write(component, WM8728_IFCTL, iface);
157         return 0;
158 }
159
160 static int wm8728_set_bias_level(struct snd_soc_component *component,
161                                  enum snd_soc_bias_level level)
162 {
163         struct wm8728_priv *wm8728 = snd_soc_component_get_drvdata(component);
164         u16 reg;
165
166         switch (level) {
167         case SND_SOC_BIAS_ON:
168         case SND_SOC_BIAS_PREPARE:
169         case SND_SOC_BIAS_STANDBY:
170                 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
171                         /* Power everything up... */
172                         reg = snd_soc_component_read(component, WM8728_DACCTL);
173                         snd_soc_component_write(component, WM8728_DACCTL, reg & ~0x4);
174
175                         /* ..then sync in the register cache. */
176                         regcache_sync(wm8728->regmap);
177                 }
178                 break;
179
180         case SND_SOC_BIAS_OFF:
181                 reg = snd_soc_component_read(component, WM8728_DACCTL);
182                 snd_soc_component_write(component, WM8728_DACCTL, reg | 0x4);
183                 break;
184         }
185         return 0;
186 }
187
188 #define WM8728_RATES (SNDRV_PCM_RATE_8000_192000)
189
190 #define WM8728_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
191         SNDRV_PCM_FMTBIT_S24_LE)
192
193 static const struct snd_soc_dai_ops wm8728_dai_ops = {
194         .hw_params      = wm8728_hw_params,
195         .mute_stream    = wm8728_mute,
196         .set_fmt        = wm8728_set_dai_fmt,
197         .no_capture_mute = 1,
198 };
199
200 static struct snd_soc_dai_driver wm8728_dai = {
201         .name = "wm8728-hifi",
202         .playback = {
203                 .stream_name = "Playback",
204                 .channels_min = 2,
205                 .channels_max = 2,
206                 .rates = WM8728_RATES,
207                 .formats = WM8728_FORMATS,
208         },
209         .ops = &wm8728_dai_ops,
210 };
211
212 static const struct snd_soc_component_driver soc_component_dev_wm8728 = {
213         .set_bias_level         = wm8728_set_bias_level,
214         .controls               = wm8728_snd_controls,
215         .num_controls           = ARRAY_SIZE(wm8728_snd_controls),
216         .dapm_widgets           = wm8728_dapm_widgets,
217         .num_dapm_widgets       = ARRAY_SIZE(wm8728_dapm_widgets),
218         .dapm_routes            = wm8728_intercon,
219         .num_dapm_routes        = ARRAY_SIZE(wm8728_intercon),
220         .suspend_bias_off       = 1,
221         .idle_bias_on           = 1,
222         .use_pmdown_time        = 1,
223         .endianness             = 1,
224 };
225
226 static const struct of_device_id wm8728_of_match[] = {
227         { .compatible = "wlf,wm8728", },
228         { }
229 };
230 MODULE_DEVICE_TABLE(of, wm8728_of_match);
231
232 static const struct regmap_config wm8728_regmap = {
233         .reg_bits = 7,
234         .val_bits = 9,
235         .max_register = WM8728_IFCTL,
236
237         .reg_defaults = wm8728_reg_defaults,
238         .num_reg_defaults = ARRAY_SIZE(wm8728_reg_defaults),
239         .cache_type = REGCACHE_MAPLE,
240 };
241
242 #if defined(CONFIG_SPI_MASTER)
243 static int wm8728_spi_probe(struct spi_device *spi)
244 {
245         struct wm8728_priv *wm8728;
246         int ret;
247
248         wm8728 = devm_kzalloc(&spi->dev, sizeof(struct wm8728_priv),
249                               GFP_KERNEL);
250         if (wm8728 == NULL)
251                 return -ENOMEM;
252
253         wm8728->regmap = devm_regmap_init_spi(spi, &wm8728_regmap);
254         if (IS_ERR(wm8728->regmap))
255                 return PTR_ERR(wm8728->regmap);
256
257         spi_set_drvdata(spi, wm8728);
258
259         ret = devm_snd_soc_register_component(&spi->dev,
260                         &soc_component_dev_wm8728, &wm8728_dai, 1);
261
262         return ret;
263 }
264
265 static struct spi_driver wm8728_spi_driver = {
266         .driver = {
267                 .name   = "wm8728",
268                 .of_match_table = wm8728_of_match,
269         },
270         .probe          = wm8728_spi_probe,
271 };
272 #endif /* CONFIG_SPI_MASTER */
273
274 #if IS_ENABLED(CONFIG_I2C)
275 static int wm8728_i2c_probe(struct i2c_client *i2c)
276 {
277         struct wm8728_priv *wm8728;
278         int ret;
279
280         wm8728 = devm_kzalloc(&i2c->dev, sizeof(struct wm8728_priv),
281                               GFP_KERNEL);
282         if (wm8728 == NULL)
283                 return -ENOMEM;
284
285         wm8728->regmap = devm_regmap_init_i2c(i2c, &wm8728_regmap);
286         if (IS_ERR(wm8728->regmap))
287                 return PTR_ERR(wm8728->regmap);
288
289         i2c_set_clientdata(i2c, wm8728);
290
291         ret =  devm_snd_soc_register_component(&i2c->dev,
292                         &soc_component_dev_wm8728, &wm8728_dai, 1);
293
294         return ret;
295 }
296
297 static const struct i2c_device_id wm8728_i2c_id[] = {
298         { "wm8728", 0 },
299         { }
300 };
301 MODULE_DEVICE_TABLE(i2c, wm8728_i2c_id);
302
303 static struct i2c_driver wm8728_i2c_driver = {
304         .driver = {
305                 .name = "wm8728",
306                 .of_match_table = wm8728_of_match,
307         },
308         .probe = wm8728_i2c_probe,
309         .id_table = wm8728_i2c_id,
310 };
311 #endif
312
313 static int __init wm8728_modinit(void)
314 {
315         int ret = 0;
316 #if IS_ENABLED(CONFIG_I2C)
317         ret = i2c_add_driver(&wm8728_i2c_driver);
318         if (ret != 0) {
319                 printk(KERN_ERR "Failed to register wm8728 I2C driver: %d\n",
320                        ret);
321         }
322 #endif
323 #if defined(CONFIG_SPI_MASTER)
324         ret = spi_register_driver(&wm8728_spi_driver);
325         if (ret != 0) {
326                 printk(KERN_ERR "Failed to register wm8728 SPI driver: %d\n",
327                        ret);
328         }
329 #endif
330         return ret;
331 }
332 module_init(wm8728_modinit);
333
334 static void __exit wm8728_exit(void)
335 {
336 #if IS_ENABLED(CONFIG_I2C)
337         i2c_del_driver(&wm8728_i2c_driver);
338 #endif
339 #if defined(CONFIG_SPI_MASTER)
340         spi_unregister_driver(&wm8728_spi_driver);
341 #endif
342 }
343 module_exit(wm8728_exit);
344
345 MODULE_DESCRIPTION("ASoC WM8728 driver");
346 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
347 MODULE_LICENSE("GPL");