1// SPDX-License-Identifier: GPL-2.0
2//
3// PCM3060 codec driver
4//
5// Copyright (C) 2018 Kirill Marinushkin <k.marinushkin@gmail.com>
6
7#include <linux/module.h>
8#include <sound/pcm_params.h>
9#include <sound/soc.h>
10#include <sound/tlv.h>
11
12#include "pcm3060.h"
13
14/* dai */
15
16static int pcm3060_set_sysclk(struct snd_soc_dai *dai, int clk_id,
17 unsigned int freq, int dir)
18{
19 struct snd_soc_component *comp = dai->component;
20 struct pcm3060_priv *priv = snd_soc_component_get_drvdata(c: comp);
21 unsigned int reg;
22 unsigned int val;
23
24 if (dir != SND_SOC_CLOCK_IN) {
25 dev_err(comp->dev, "unsupported sysclock dir: %d\n", dir);
26 return -EINVAL;
27 }
28
29 switch (clk_id) {
30 case PCM3060_CLK_DEF:
31 val = 0;
32 break;
33
34 case PCM3060_CLK1:
35 val = (dai->id == PCM3060_DAI_ID_DAC ? PCM3060_REG_CSEL : 0);
36 break;
37
38 case PCM3060_CLK2:
39 val = (dai->id == PCM3060_DAI_ID_DAC ? 0 : PCM3060_REG_CSEL);
40 break;
41
42 default:
43 dev_err(comp->dev, "unsupported sysclock id: %d\n", clk_id);
44 return -EINVAL;
45 }
46
47 if (dai->id == PCM3060_DAI_ID_DAC)
48 reg = PCM3060_REG67;
49 else
50 reg = PCM3060_REG72;
51
52 regmap_update_bits(map: priv->regmap, reg, PCM3060_REG_CSEL, val);
53
54 priv->dai[dai->id].sclk_freq = freq;
55
56 return 0;
57}
58
59static int pcm3060_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
60{
61 struct snd_soc_component *comp = dai->component;
62 struct pcm3060_priv *priv = snd_soc_component_get_drvdata(c: comp);
63 unsigned int reg;
64 unsigned int val;
65
66 if ((fmt & SND_SOC_DAIFMT_INV_MASK) != SND_SOC_DAIFMT_NB_NF) {
67 dev_err(comp->dev, "unsupported DAI polarity: 0x%x\n", fmt);
68 return -EINVAL;
69 }
70
71 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
72 case SND_SOC_DAIFMT_CBP_CFP:
73 priv->dai[dai->id].is_provider = true;
74 break;
75 case SND_SOC_DAIFMT_CBC_CFC:
76 priv->dai[dai->id].is_provider = false;
77 break;
78 default:
79 dev_err(comp->dev, "unsupported DAI mode: 0x%x\n", fmt);
80 return -EINVAL;
81 }
82
83 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
84 case SND_SOC_DAIFMT_I2S:
85 val = PCM3060_REG_FMT_I2S;
86 break;
87 case SND_SOC_DAIFMT_RIGHT_J:
88 val = PCM3060_REG_FMT_RJ;
89 break;
90 case SND_SOC_DAIFMT_LEFT_J:
91 val = PCM3060_REG_FMT_LJ;
92 break;
93 default:
94 dev_err(comp->dev, "unsupported DAI format: 0x%x\n", fmt);
95 return -EINVAL;
96 }
97
98 if (dai->id == PCM3060_DAI_ID_DAC)
99 reg = PCM3060_REG67;
100 else
101 reg = PCM3060_REG72;
102
103 regmap_update_bits(map: priv->regmap, reg, PCM3060_REG_MASK_FMT, val);
104
105 return 0;
106}
107
108static int pcm3060_hw_params(struct snd_pcm_substream *substream,
109 struct snd_pcm_hw_params *params,
110 struct snd_soc_dai *dai)
111{
112 struct snd_soc_component *comp = dai->component;
113 struct pcm3060_priv *priv = snd_soc_component_get_drvdata(c: comp);
114 unsigned int rate;
115 unsigned int ratio;
116 unsigned int reg;
117 unsigned int val;
118
119 if (!priv->dai[dai->id].is_provider) {
120 val = PCM3060_REG_MS_S;
121 goto val_ready;
122 }
123
124 rate = params_rate(p: params);
125 if (!rate) {
126 dev_err(comp->dev, "rate is not configured\n");
127 return -EINVAL;
128 }
129
130 ratio = priv->dai[dai->id].sclk_freq / rate;
131
132 switch (ratio) {
133 case 768:
134 val = PCM3060_REG_MS_M768;
135 break;
136 case 512:
137 val = PCM3060_REG_MS_M512;
138 break;
139 case 384:
140 val = PCM3060_REG_MS_M384;
141 break;
142 case 256:
143 val = PCM3060_REG_MS_M256;
144 break;
145 case 192:
146 val = PCM3060_REG_MS_M192;
147 break;
148 case 128:
149 val = PCM3060_REG_MS_M128;
150 break;
151 default:
152 dev_err(comp->dev, "unsupported ratio: %d\n", ratio);
153 return -EINVAL;
154 }
155
156val_ready:
157 if (dai->id == PCM3060_DAI_ID_DAC)
158 reg = PCM3060_REG67;
159 else
160 reg = PCM3060_REG72;
161
162 regmap_update_bits(map: priv->regmap, reg, PCM3060_REG_MASK_MS, val);
163
164 return 0;
165}
166
167static const struct snd_soc_dai_ops pcm3060_dai_ops = {
168 .set_sysclk = pcm3060_set_sysclk,
169 .set_fmt = pcm3060_set_fmt,
170 .hw_params = pcm3060_hw_params,
171};
172
173#define PCM3060_DAI_RATES_ADC (SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 | \
174 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \
175 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
176
177#define PCM3060_DAI_RATES_DAC (PCM3060_DAI_RATES_ADC | \
178 SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000)
179
180static struct snd_soc_dai_driver pcm3060_dai[] = {
181 {
182 .name = "pcm3060-dac",
183 .id = PCM3060_DAI_ID_DAC,
184 .playback = {
185 .stream_name = "Playback",
186 .channels_min = 2,
187 .channels_max = 2,
188 .rates = PCM3060_DAI_RATES_DAC,
189 .formats = SNDRV_PCM_FMTBIT_S24_LE,
190 },
191 .ops = &pcm3060_dai_ops,
192 },
193 {
194 .name = "pcm3060-adc",
195 .id = PCM3060_DAI_ID_ADC,
196 .capture = {
197 .stream_name = "Capture",
198 .channels_min = 2,
199 .channels_max = 2,
200 .rates = PCM3060_DAI_RATES_ADC,
201 .formats = SNDRV_PCM_FMTBIT_S24_LE,
202 },
203 .ops = &pcm3060_dai_ops,
204 },
205};
206
207/* dapm */
208
209static DECLARE_TLV_DB_SCALE(pcm3060_dapm_tlv, -10050, 50, 1);
210
211static const struct snd_kcontrol_new pcm3060_dapm_controls[] = {
212 SOC_DOUBLE_R_RANGE_TLV("Master Playback Volume",
213 PCM3060_REG65, PCM3060_REG66, 0,
214 PCM3060_REG_AT2_MIN, PCM3060_REG_AT2_MAX,
215 0, pcm3060_dapm_tlv),
216 SOC_DOUBLE("Master Playback Switch", PCM3060_REG68,
217 PCM3060_REG_SHIFT_MUT21, PCM3060_REG_SHIFT_MUT22, 1, 1),
218
219 SOC_DOUBLE_R_RANGE_TLV("Master Capture Volume",
220 PCM3060_REG70, PCM3060_REG71, 0,
221 PCM3060_REG_AT1_MIN, PCM3060_REG_AT1_MAX,
222 0, pcm3060_dapm_tlv),
223 SOC_DOUBLE("Master Capture Switch", PCM3060_REG73,
224 PCM3060_REG_SHIFT_MUT11, PCM3060_REG_SHIFT_MUT12, 1, 1),
225};
226
227static const struct snd_soc_dapm_widget pcm3060_dapm_widgets[] = {
228 SND_SOC_DAPM_DAC("DAC", "Playback", PCM3060_REG64,
229 PCM3060_REG_SHIFT_DAPSV, 1),
230
231 SND_SOC_DAPM_OUTPUT("OUTL"),
232 SND_SOC_DAPM_OUTPUT("OUTR"),
233
234 SND_SOC_DAPM_INPUT("INL"),
235 SND_SOC_DAPM_INPUT("INR"),
236
237 SND_SOC_DAPM_ADC("ADC", "Capture", PCM3060_REG64,
238 PCM3060_REG_SHIFT_ADPSV, 1),
239};
240
241static const struct snd_soc_dapm_route pcm3060_dapm_map[] = {
242 { "OUTL", NULL, "DAC" },
243 { "OUTR", NULL, "DAC" },
244
245 { "ADC", NULL, "INL" },
246 { "ADC", NULL, "INR" },
247};
248
249/* soc component */
250
251static const struct snd_soc_component_driver pcm3060_soc_comp_driver = {
252 .controls = pcm3060_dapm_controls,
253 .num_controls = ARRAY_SIZE(pcm3060_dapm_controls),
254 .dapm_widgets = pcm3060_dapm_widgets,
255 .num_dapm_widgets = ARRAY_SIZE(pcm3060_dapm_widgets),
256 .dapm_routes = pcm3060_dapm_map,
257 .num_dapm_routes = ARRAY_SIZE(pcm3060_dapm_map),
258 .endianness = 1,
259};
260
261/* regmap */
262
263static bool pcm3060_reg_writeable(struct device *dev, unsigned int reg)
264{
265 return (reg >= PCM3060_REG64);
266}
267
268static bool pcm3060_reg_readable(struct device *dev, unsigned int reg)
269{
270 return (reg >= PCM3060_REG64);
271}
272
273static bool pcm3060_reg_volatile(struct device *dev, unsigned int reg)
274{
275 /* PCM3060_REG64 is volatile */
276 return (reg == PCM3060_REG64);
277}
278
279static const struct reg_default pcm3060_reg_defaults[] = {
280 { PCM3060_REG64, 0xF0 },
281 { PCM3060_REG65, 0xFF },
282 { PCM3060_REG66, 0xFF },
283 { PCM3060_REG67, 0x00 },
284 { PCM3060_REG68, 0x00 },
285 { PCM3060_REG69, 0x00 },
286 { PCM3060_REG70, 0xD7 },
287 { PCM3060_REG71, 0xD7 },
288 { PCM3060_REG72, 0x00 },
289 { PCM3060_REG73, 0x00 },
290};
291
292const struct regmap_config pcm3060_regmap = {
293 .reg_bits = 8,
294 .val_bits = 8,
295 .writeable_reg = pcm3060_reg_writeable,
296 .readable_reg = pcm3060_reg_readable,
297 .volatile_reg = pcm3060_reg_volatile,
298 .max_register = PCM3060_REG73,
299 .reg_defaults = pcm3060_reg_defaults,
300 .num_reg_defaults = ARRAY_SIZE(pcm3060_reg_defaults),
301 .cache_type = REGCACHE_RBTREE,
302};
303EXPORT_SYMBOL(pcm3060_regmap);
304
305/* device */
306
307static void pcm3060_parse_dt(const struct device_node *np,
308 struct pcm3060_priv *priv)
309{
310 priv->out_se = of_property_read_bool(np, propname: "ti,out-single-ended");
311}
312
313int pcm3060_probe(struct device *dev)
314{
315 int rc;
316 struct pcm3060_priv *priv = dev_get_drvdata(dev);
317
318 /* soft reset */
319 rc = regmap_update_bits(map: priv->regmap, PCM3060_REG64,
320 PCM3060_REG_MRST, val: 0);
321 if (rc) {
322 dev_err(dev, "failed to reset component, rc=%d\n", rc);
323 return rc;
324 }
325
326 if (dev->of_node)
327 pcm3060_parse_dt(np: dev->of_node, priv);
328
329 if (priv->out_se)
330 regmap_update_bits(map: priv->regmap, PCM3060_REG64,
331 PCM3060_REG_SE, PCM3060_REG_SE);
332
333 rc = devm_snd_soc_register_component(dev, component_driver: &pcm3060_soc_comp_driver,
334 dai_drv: pcm3060_dai,
335 ARRAY_SIZE(pcm3060_dai));
336 if (rc) {
337 dev_err(dev, "failed to register component, rc=%d\n", rc);
338 return rc;
339 }
340
341 return 0;
342}
343EXPORT_SYMBOL(pcm3060_probe);
344
345MODULE_DESCRIPTION("PCM3060 codec driver");
346MODULE_AUTHOR("Kirill Marinushkin <k.marinushkin@gmail.com>");
347MODULE_LICENSE("GPL v2");
348

source code of linux/sound/soc/codecs/pcm3060.c