1 // SPDX-License-Identifier: GPL-2.0
3 * ak4118.c -- Asahi Kasei ALSA Soc Audio driver
5 * Copyright 2018 DEVIALET
9 #include <linux/gpio/consumer.h>
10 #include <linux/module.h>
11 #include <linux/of_device.h>
12 #include <linux/of_gpio.h>
13 #include <linux/regmap.h>
14 #include <linux/slab.h>
16 #include <sound/asoundef.h>
17 #include <sound/core.h>
18 #include <sound/initval.h>
19 #include <sound/soc.h>
21 #define AK4118_REG_CLK_PWR_CTL 0x00
22 #define AK4118_REG_FORMAT_CTL 0x01
23 #define AK4118_REG_IO_CTL0 0x02
24 #define AK4118_REG_IO_CTL1 0x03
25 #define AK4118_REG_INT0_MASK 0x04
26 #define AK4118_REG_INT1_MASK 0x05
27 #define AK4118_REG_RCV_STATUS0 0x06
28 #define AK4118_REG_RCV_STATUS1 0x07
29 #define AK4118_REG_RXCHAN_STATUS0 0x08
30 #define AK4118_REG_RXCHAN_STATUS1 0x09
31 #define AK4118_REG_RXCHAN_STATUS2 0x0a
32 #define AK4118_REG_RXCHAN_STATUS3 0x0b
33 #define AK4118_REG_RXCHAN_STATUS4 0x0c
34 #define AK4118_REG_TXCHAN_STATUS0 0x0d
35 #define AK4118_REG_TXCHAN_STATUS1 0x0e
36 #define AK4118_REG_TXCHAN_STATUS2 0x0f
37 #define AK4118_REG_TXCHAN_STATUS3 0x10
38 #define AK4118_REG_TXCHAN_STATUS4 0x11
39 #define AK4118_REG_BURST_PREAMB_PC0 0x12
40 #define AK4118_REG_BURST_PREAMB_PC1 0x13
41 #define AK4118_REG_BURST_PREAMB_PD0 0x14
42 #define AK4118_REG_BURST_PREAMB_PD1 0x15
43 #define AK4118_REG_QSUB_CTL 0x16
44 #define AK4118_REG_QSUB_TRACK 0x17
45 #define AK4118_REG_QSUB_INDEX 0x18
46 #define AK4118_REG_QSUB_MIN 0x19
47 #define AK4118_REG_QSUB_SEC 0x1a
48 #define AK4118_REG_QSUB_FRAME 0x1b
49 #define AK4118_REG_QSUB_ZERO 0x1c
50 #define AK4118_REG_QSUB_ABS_MIN 0x1d
51 #define AK4118_REG_QSUB_ABS_SEC 0x1e
52 #define AK4118_REG_QSUB_ABS_FRAME 0x1f
53 #define AK4118_REG_GPE 0x20
54 #define AK4118_REG_GPDR 0x21
55 #define AK4118_REG_GPSCR 0x22
56 #define AK4118_REG_GPLR 0x23
57 #define AK4118_REG_DAT_MASK_DTS 0x24
58 #define AK4118_REG_RX_DETECT 0x25
59 #define AK4118_REG_STC_DAT_DETECT 0x26
60 #define AK4118_REG_RXCHAN_STATUS5 0x27
61 #define AK4118_REG_TXCHAN_STATUS5 0x28
62 #define AK4118_REG_MAX 0x29
64 #define AK4118_REG_FORMAT_CTL_DIF0 (1 << 4)
65 #define AK4118_REG_FORMAT_CTL_DIF1 (1 << 5)
66 #define AK4118_REG_FORMAT_CTL_DIF2 (1 << 6)
69 struct regmap *regmap;
70 struct gpio_desc *reset;
71 struct gpio_desc *irq;
72 struct snd_soc_component *component;
75 static const struct reg_default ak4118_reg_defaults[] = {
76 {AK4118_REG_CLK_PWR_CTL, 0x43},
77 {AK4118_REG_FORMAT_CTL, 0x6a},
78 {AK4118_REG_IO_CTL0, 0x88},
79 {AK4118_REG_IO_CTL1, 0x48},
80 {AK4118_REG_INT0_MASK, 0xee},
81 {AK4118_REG_INT1_MASK, 0xb5},
82 {AK4118_REG_RCV_STATUS0, 0x00},
83 {AK4118_REG_RCV_STATUS1, 0x10},
84 {AK4118_REG_TXCHAN_STATUS0, 0x00},
85 {AK4118_REG_TXCHAN_STATUS1, 0x00},
86 {AK4118_REG_TXCHAN_STATUS2, 0x00},
87 {AK4118_REG_TXCHAN_STATUS3, 0x00},
88 {AK4118_REG_TXCHAN_STATUS4, 0x00},
89 {AK4118_REG_GPE, 0x77},
90 {AK4118_REG_GPDR, 0x00},
91 {AK4118_REG_GPSCR, 0x00},
92 {AK4118_REG_GPLR, 0x00},
93 {AK4118_REG_DAT_MASK_DTS, 0x3f},
94 {AK4118_REG_RX_DETECT, 0x00},
95 {AK4118_REG_STC_DAT_DETECT, 0x00},
96 {AK4118_REG_TXCHAN_STATUS5, 0x00},
99 static const char * const ak4118_input_select_txt[] = {
100 "RX0", "RX1", "RX2", "RX3", "RX4", "RX5", "RX6", "RX7",
102 static SOC_ENUM_SINGLE_DECL(ak4118_insel_enum, AK4118_REG_IO_CTL1, 0x0,
103 ak4118_input_select_txt);
105 static const struct snd_kcontrol_new ak4118_input_mux_controls =
106 SOC_DAPM_ENUM("Input Select", ak4118_insel_enum);
108 static const char * const ak4118_iec958_fs_txt[] = {
109 "44100", "48000", "32000", "22050", "11025", "24000", "16000", "88200",
110 "8000", "96000", "64000", "176400", "192000",
113 static const int ak4118_iec958_fs_val[] = {
114 0x0, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xE,
117 static SOC_VALUE_ENUM_SINGLE_DECL(ak4118_iec958_fs_enum, AK4118_REG_RCV_STATUS1,
118 0x4, 0x4, ak4118_iec958_fs_txt,
119 ak4118_iec958_fs_val);
121 static struct snd_kcontrol_new ak4118_iec958_controls[] = {
122 SOC_SINGLE("IEC958 Parity Errors", AK4118_REG_RCV_STATUS0, 0, 1, 0),
123 SOC_SINGLE("IEC958 No Audio", AK4118_REG_RCV_STATUS0, 1, 1, 0),
124 SOC_SINGLE("IEC958 PLL Lock", AK4118_REG_RCV_STATUS0, 4, 1, 1),
125 SOC_SINGLE("IEC958 Non PCM", AK4118_REG_RCV_STATUS0, 6, 1, 0),
126 SOC_ENUM("IEC958 Sampling Freq", ak4118_iec958_fs_enum),
129 static const struct snd_soc_dapm_widget ak4118_dapm_widgets[] = {
130 SND_SOC_DAPM_INPUT("INRX0"),
131 SND_SOC_DAPM_INPUT("INRX1"),
132 SND_SOC_DAPM_INPUT("INRX2"),
133 SND_SOC_DAPM_INPUT("INRX3"),
134 SND_SOC_DAPM_INPUT("INRX4"),
135 SND_SOC_DAPM_INPUT("INRX5"),
136 SND_SOC_DAPM_INPUT("INRX6"),
137 SND_SOC_DAPM_INPUT("INRX7"),
138 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
139 &ak4118_input_mux_controls),
142 static const struct snd_soc_dapm_route ak4118_dapm_routes[] = {
143 {"Input Mux", "RX0", "INRX0"},
144 {"Input Mux", "RX1", "INRX1"},
145 {"Input Mux", "RX2", "INRX2"},
146 {"Input Mux", "RX3", "INRX3"},
147 {"Input Mux", "RX4", "INRX4"},
148 {"Input Mux", "RX5", "INRX5"},
149 {"Input Mux", "RX6", "INRX6"},
150 {"Input Mux", "RX7", "INRX7"},
154 static int ak4118_set_dai_fmt_provider(struct ak4118_priv *ak4118,
159 switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
160 case SND_SOC_DAIFMT_I2S:
161 dif = AK4118_REG_FORMAT_CTL_DIF0 | AK4118_REG_FORMAT_CTL_DIF2;
163 case SND_SOC_DAIFMT_RIGHT_J:
164 dif = AK4118_REG_FORMAT_CTL_DIF0 | AK4118_REG_FORMAT_CTL_DIF1;
166 case SND_SOC_DAIFMT_LEFT_J:
167 dif = AK4118_REG_FORMAT_CTL_DIF2;
176 static int ak4118_set_dai_fmt_consumer(struct ak4118_priv *ak4118,
181 switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
182 case SND_SOC_DAIFMT_I2S:
183 dif = AK4118_REG_FORMAT_CTL_DIF0 | AK4118_REG_FORMAT_CTL_DIF1 |
184 AK4118_REG_FORMAT_CTL_DIF2;
186 case SND_SOC_DAIFMT_LEFT_J:
187 dif = AK4118_REG_FORMAT_CTL_DIF1 | AK4118_REG_FORMAT_CTL_DIF2;
196 static int ak4118_set_dai_fmt(struct snd_soc_dai *dai,
199 struct snd_soc_component *component = dai->component;
200 struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);
204 switch (format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
205 case SND_SOC_DAIFMT_CBP_CFP:
206 dif = ak4118_set_dai_fmt_provider(ak4118, format);
208 case SND_SOC_DAIFMT_CBC_CFC:
209 dif = ak4118_set_dai_fmt_consumer(ak4118, format);
216 /* format not supported */
222 ret = regmap_update_bits(ak4118->regmap, AK4118_REG_FORMAT_CTL,
223 AK4118_REG_FORMAT_CTL_DIF0 |
224 AK4118_REG_FORMAT_CTL_DIF1 |
225 AK4118_REG_FORMAT_CTL_DIF2, dif);
233 static int ak4118_hw_params(struct snd_pcm_substream *substream,
234 struct snd_pcm_hw_params *params,
235 struct snd_soc_dai *dai)
240 static const struct snd_soc_dai_ops ak4118_dai_ops = {
241 .hw_params = ak4118_hw_params,
242 .set_fmt = ak4118_set_dai_fmt,
245 static struct snd_soc_dai_driver ak4118_dai = {
246 .name = "ak4118-hifi",
248 .stream_name = "Capture",
251 .rates = SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 |
252 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
253 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |
254 SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000,
255 .formats = SNDRV_PCM_FMTBIT_S16_LE |
256 SNDRV_PCM_FMTBIT_S24_3LE |
257 SNDRV_PCM_FMTBIT_S24_LE
259 .ops = &ak4118_dai_ops,
262 static irqreturn_t ak4118_irq_handler(int irq, void *data)
264 struct ak4118_priv *ak4118 = data;
265 struct snd_soc_component *component = ak4118->component;
266 struct snd_kcontrol_new *kctl_new;
267 struct snd_kcontrol *kctl;
268 struct snd_ctl_elem_id *id;
274 for (i = 0; i < ARRAY_SIZE(ak4118_iec958_controls); i++) {
275 kctl_new = &ak4118_iec958_controls[i];
276 kctl = snd_soc_card_get_kcontrol(component->card,
281 snd_ctl_notify(component->card->snd_card,
282 SNDRV_CTL_EVENT_MASK_VALUE, id);
288 static int ak4118_probe(struct snd_soc_component *component)
290 struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);
293 ak4118->component = component;
296 gpiod_set_value(ak4118->reset, 0);
298 /* unmask all int1 sources */
299 ret = regmap_write(ak4118->regmap, AK4118_REG_INT1_MASK, 0x00);
301 dev_err(component->dev,
302 "failed to write regmap 0x%x 0x%x: %d\n",
303 AK4118_REG_INT1_MASK, 0x00, ret);
307 /* rx detect enable on all channels */
308 ret = regmap_write(ak4118->regmap, AK4118_REG_RX_DETECT, 0xff);
310 dev_err(component->dev,
311 "failed to write regmap 0x%x 0x%x: %d\n",
312 AK4118_REG_RX_DETECT, 0xff, ret);
316 ret = snd_soc_add_component_controls(component, ak4118_iec958_controls,
317 ARRAY_SIZE(ak4118_iec958_controls));
319 dev_err(component->dev,
320 "failed to add component kcontrols: %d\n", ret);
327 static void ak4118_remove(struct snd_soc_component *component)
329 struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);
332 gpiod_set_value(ak4118->reset, 1);
335 static const struct snd_soc_component_driver soc_component_drv_ak4118 = {
336 .probe = ak4118_probe,
337 .remove = ak4118_remove,
338 .dapm_widgets = ak4118_dapm_widgets,
339 .num_dapm_widgets = ARRAY_SIZE(ak4118_dapm_widgets),
340 .dapm_routes = ak4118_dapm_routes,
341 .num_dapm_routes = ARRAY_SIZE(ak4118_dapm_routes),
343 .use_pmdown_time = 1,
345 .non_legacy_dai_naming = 1,
348 static const struct regmap_config ak4118_regmap = {
352 .reg_defaults = ak4118_reg_defaults,
353 .num_reg_defaults = ARRAY_SIZE(ak4118_reg_defaults),
355 .cache_type = REGCACHE_NONE,
356 .max_register = AK4118_REG_MAX - 1,
359 static int ak4118_i2c_probe(struct i2c_client *i2c,
360 const struct i2c_device_id *id)
362 struct ak4118_priv *ak4118;
365 ak4118 = devm_kzalloc(&i2c->dev, sizeof(struct ak4118_priv),
370 ak4118->regmap = devm_regmap_init_i2c(i2c, &ak4118_regmap);
371 if (IS_ERR(ak4118->regmap))
372 return PTR_ERR(ak4118->regmap);
374 i2c_set_clientdata(i2c, ak4118);
376 ak4118->reset = devm_gpiod_get(&i2c->dev, "reset", GPIOD_OUT_HIGH);
377 if (IS_ERR(ak4118->reset))
378 return dev_err_probe(&i2c->dev, PTR_ERR(ak4118->reset),
379 "Failed to get reset\n");
381 ak4118->irq = devm_gpiod_get(&i2c->dev, "irq", GPIOD_IN);
382 if (IS_ERR(ak4118->irq))
383 return dev_err_probe(&i2c->dev, PTR_ERR(ak4118->irq),
384 "Failed to get IRQ\n");
386 ret = devm_request_threaded_irq(&i2c->dev, gpiod_to_irq(ak4118->irq),
387 NULL, ak4118_irq_handler,
388 IRQF_TRIGGER_RISING | IRQF_ONESHOT,
389 "ak4118-irq", ak4118);
391 dev_err(&i2c->dev, "Fail to request_irq: %d\n", ret);
395 return devm_snd_soc_register_component(&i2c->dev,
396 &soc_component_drv_ak4118, &ak4118_dai, 1);
400 static const struct of_device_id ak4118_of_match[] = {
401 { .compatible = "asahi-kasei,ak4118", },
404 MODULE_DEVICE_TABLE(of, ak4118_of_match);
407 static const struct i2c_device_id ak4118_id_table[] = {
411 MODULE_DEVICE_TABLE(i2c, ak4118_id_table);
413 static struct i2c_driver ak4118_i2c_driver = {
416 .of_match_table = of_match_ptr(ak4118_of_match),
418 .id_table = ak4118_id_table,
419 .probe = ak4118_i2c_probe,
422 module_i2c_driver(ak4118_i2c_driver);
424 MODULE_DESCRIPTION("Asahi Kasei AK4118 ALSA SoC driver");
425 MODULE_AUTHOR("Adrien Charruel <adrien.charruel@devialet.com>");
426 MODULE_LICENSE("GPL");