Commit | Line | Data |
---|---|---|
f2390880 KM |
1 | /* |
2 | * ASoC simple sound card support | |
3 | * | |
4 | * Copyright (C) 2012 Renesas Solutions Corp. | |
5 | * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
fa558c28 | 11 | #include <linux/clk.h> |
6ff62eed | 12 | #include <linux/device.h> |
f2390880 | 13 | #include <linux/module.h> |
fa558c28 | 14 | #include <linux/of.h> |
f2390880 | 15 | #include <linux/platform_device.h> |
ca919fe4 | 16 | #include <linux/string.h> |
f2390880 | 17 | #include <sound/simple_card.h> |
6ff62eed XL |
18 | #include <sound/soc-dai.h> |
19 | #include <sound/soc.h> | |
f2390880 | 20 | |
45fce594 JFM |
21 | struct simple_card_data { |
22 | struct snd_soc_card snd_card; | |
cf7dc23c JFM |
23 | struct simple_dai_props { |
24 | struct asoc_simple_dai cpu_dai; | |
25 | struct asoc_simple_dai codec_dai; | |
26 | } *dai_props; | |
27 | struct snd_soc_dai_link dai_link[]; /* dynamically allocated */ | |
45fce594 JFM |
28 | }; |
29 | ||
a4a2992c | 30 | static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai, |
30d0341e | 31 | struct asoc_simple_dai *set) |
a4a2992c | 32 | { |
4763ebe2 | 33 | int ret; |
a4a2992c | 34 | |
30d0341e XL |
35 | if (set->fmt) { |
36 | ret = snd_soc_dai_set_fmt(dai, set->fmt); | |
4763ebe2 XL |
37 | if (ret && ret != -ENOTSUPP) { |
38 | dev_err(dai->dev, "simple-card: set_fmt error\n"); | |
39 | goto err; | |
40 | } | |
e244bb9b KM |
41 | } |
42 | ||
4763ebe2 | 43 | if (set->sysclk) { |
a4a2992c | 44 | ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0); |
4763ebe2 XL |
45 | if (ret && ret != -ENOTSUPP) { |
46 | dev_err(dai->dev, "simple-card: set_sysclk error\n"); | |
47 | goto err; | |
48 | } | |
49 | } | |
50 | ||
6ff62eed XL |
51 | if (set->slots) { |
52 | ret = snd_soc_dai_set_tdm_slot(dai, 0, 0, | |
53 | set->slots, | |
54 | set->slot_width); | |
55 | if (ret && ret != -ENOTSUPP) { | |
56 | dev_err(dai->dev, "simple-card: set_tdm_slot error\n"); | |
57 | goto err; | |
58 | } | |
59 | } | |
60 | ||
4763ebe2 | 61 | ret = 0; |
a4a2992c | 62 | |
4763ebe2 | 63 | err: |
a4a2992c KM |
64 | return ret; |
65 | } | |
66 | ||
f2390880 KM |
67 | static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd) |
68 | { | |
b367a325 | 69 | struct simple_card_data *priv = |
ba194a4d | 70 | snd_soc_card_get_drvdata(rtd->card); |
f2390880 KM |
71 | struct snd_soc_dai *codec = rtd->codec_dai; |
72 | struct snd_soc_dai *cpu = rtd->cpu_dai; | |
6a91a17b JFM |
73 | struct simple_dai_props *dai_props; |
74 | int num, ret; | |
f2390880 | 75 | |
6a91a17b JFM |
76 | num = rtd - rtd->card->rtd; |
77 | dai_props = &priv->dai_props[num]; | |
78 | ret = __asoc_simple_card_dai_init(codec, &dai_props->codec_dai); | |
a4a2992c KM |
79 | if (ret < 0) |
80 | return ret; | |
f2390880 | 81 | |
6a91a17b | 82 | ret = __asoc_simple_card_dai_init(cpu, &dai_props->cpu_dai); |
a4a2992c KM |
83 | if (ret < 0) |
84 | return ret; | |
f2390880 KM |
85 | |
86 | return 0; | |
87 | } | |
88 | ||
fa558c28 KM |
89 | static int |
90 | asoc_simple_card_sub_parse_of(struct device_node *np, | |
30d0341e | 91 | unsigned int daifmt, |
fa558c28 | 92 | struct asoc_simple_dai *dai, |
52008472 JFM |
93 | const struct device_node **p_node, |
94 | const char **name) | |
fa558c28 | 95 | { |
201a0eac | 96 | struct device_node *node; |
fa558c28 KM |
97 | struct clk *clk; |
98 | int ret; | |
99 | ||
100 | /* | |
101 | * get node via "sound-dai = <&phandle port>" | |
102 | * it will be used as xxx_of_node on soc_bind_dai_link() | |
103 | */ | |
201a0eac JFM |
104 | node = of_parse_phandle(np, "sound-dai", 0); |
105 | if (!node) | |
fa558c28 | 106 | return -ENODEV; |
201a0eac | 107 | *p_node = node; |
fa558c28 KM |
108 | |
109 | /* get dai->name */ | |
52008472 | 110 | ret = snd_soc_of_get_dai_name(np, name); |
fa558c28 | 111 | if (ret < 0) |
e512e001 | 112 | return ret; |
fa558c28 | 113 | |
6ff62eed XL |
114 | /* parse TDM slot */ |
115 | ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width); | |
116 | if (ret) | |
e512e001 | 117 | return ret; |
6ff62eed | 118 | |
fa558c28 KM |
119 | /* |
120 | * bitclock-inversion, frame-inversion | |
121 | * bitclock-master, frame-master | |
122 | * and specific "format" if it has | |
123 | */ | |
389cb834 | 124 | dai->fmt = snd_soc_of_parse_daifmt(np, NULL, NULL, NULL); |
30d0341e | 125 | dai->fmt |= daifmt; |
fa558c28 KM |
126 | |
127 | /* | |
128 | * dai->sysclk come from | |
129 | * "clocks = <&xxx>" (if system has common clock) | |
130 | * or "system-clock-frequency = <xxx>" | |
71467e46 | 131 | * or device's module clock. |
fa558c28 | 132 | */ |
71467e46 XL |
133 | if (of_property_read_bool(np, "clocks")) { |
134 | clk = of_clk_get(np, 0); | |
135 | if (IS_ERR(clk)) { | |
136 | ret = PTR_ERR(clk); | |
e512e001 | 137 | return ret; |
71467e46 XL |
138 | } |
139 | ||
140 | dai->sysclk = clk_get_rate(clk); | |
141 | } else if (of_property_read_bool(np, "system-clock-frequency")) { | |
fa558c28 KM |
142 | of_property_read_u32(np, |
143 | "system-clock-frequency", | |
144 | &dai->sysclk); | |
71467e46 | 145 | } else { |
201a0eac | 146 | clk = of_clk_get(node, 0); |
e2a19ac6 XL |
147 | if (!IS_ERR(clk)) |
148 | dai->sysclk = clk_get_rate(clk); | |
71467e46 | 149 | } |
fa558c28 | 150 | |
e512e001 | 151 | return 0; |
fa558c28 KM |
152 | } |
153 | ||
6a91a17b JFM |
154 | static int simple_card_cpu_codec_of(struct device_node *node, |
155 | int daifmt, | |
156 | struct snd_soc_dai_link *dai_link, | |
157 | struct simple_dai_props *dai_props) | |
158 | { | |
159 | struct device_node *np; | |
160 | int ret; | |
161 | ||
162 | /* CPU sub-node */ | |
163 | ret = -EINVAL; | |
164 | np = of_get_child_by_name(node, "simple-audio-card,cpu"); | |
165 | if (np) { | |
166 | ret = asoc_simple_card_sub_parse_of(np, daifmt, | |
167 | &dai_props->cpu_dai, | |
168 | &dai_link->cpu_of_node, | |
169 | &dai_link->cpu_dai_name); | |
170 | of_node_put(np); | |
171 | } | |
172 | if (ret < 0) | |
173 | return ret; | |
174 | ||
175 | /* CODEC sub-node */ | |
176 | ret = -EINVAL; | |
177 | np = of_get_child_by_name(node, "simple-audio-card,codec"); | |
178 | if (np) { | |
179 | ret = asoc_simple_card_sub_parse_of(np, daifmt, | |
180 | &dai_props->codec_dai, | |
181 | &dai_link->codec_of_node, | |
182 | &dai_link->codec_dai_name); | |
183 | of_node_put(np); | |
184 | } | |
185 | return ret; | |
186 | } | |
187 | ||
fa558c28 | 188 | static int asoc_simple_card_parse_of(struct device_node *node, |
b367a325 | 189 | struct simple_card_data *priv, |
6a91a17b JFM |
190 | struct device *dev, |
191 | int multi) | |
fa558c28 | 192 | { |
b367a325 | 193 | struct snd_soc_dai_link *dai_link = priv->snd_card.dai_link; |
6a91a17b | 194 | struct simple_dai_props *dai_props = priv->dai_props; |
fa558c28 KM |
195 | struct device_node *np; |
196 | char *name; | |
c56c4d74 | 197 | unsigned int daifmt; |
d4c22094 | 198 | int ret; |
fa558c28 | 199 | |
2772555b XL |
200 | /* parsing the card name from DT */ |
201 | snd_soc_of_parse_card_name(&priv->snd_card, "simple-audio-card,name"); | |
202 | ||
fa558c28 | 203 | /* get CPU/CODEC common format via simple-audio-card,format */ |
389cb834 JS |
204 | daifmt = snd_soc_of_parse_daifmt(node, "simple-audio-card,", NULL, |
205 | NULL) & | |
fa558c28 KM |
206 | (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK); |
207 | ||
9d681f5b XL |
208 | /* off-codec widgets */ |
209 | if (of_property_read_bool(node, "simple-audio-card,widgets")) { | |
210 | ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card, | |
211 | "simple-audio-card,widgets"); | |
212 | if (ret) | |
213 | return ret; | |
214 | } | |
215 | ||
d4c22094 | 216 | /* DAPM routes */ |
8c0b8230 | 217 | if (of_property_read_bool(node, "simple-audio-card,routing")) { |
b367a325 | 218 | ret = snd_soc_of_parse_audio_routing(&priv->snd_card, |
8c0b8230 | 219 | "simple-audio-card,routing"); |
f87a3e82 XL |
220 | if (ret) |
221 | return ret; | |
222 | } | |
d4c22094 | 223 | |
6a91a17b JFM |
224 | /* loop on the DAI links */ |
225 | np = NULL; | |
226 | for (;;) { | |
227 | if (multi) { | |
228 | np = of_get_next_child(node, np); | |
229 | if (!np) | |
230 | break; | |
231 | } | |
fa558c28 | 232 | |
6a91a17b JFM |
233 | ret = simple_card_cpu_codec_of(multi ? np : node, |
234 | daifmt, dai_link, dai_props); | |
235 | if (ret < 0) | |
236 | goto err; | |
fa558c28 | 237 | |
6a91a17b JFM |
238 | /* |
239 | * overwrite cpu_dai->fmt as its DAIFMT_MASTER bit is based on CODEC | |
240 | * while the other bits should be identical unless buggy SW/HW design. | |
241 | */ | |
242 | dai_props->cpu_dai.fmt = dai_props->codec_dai.fmt; | |
243 | ||
244 | if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) { | |
245 | ret = -EINVAL; | |
246 | goto err; | |
247 | } | |
248 | ||
249 | /* simple-card assumes platform == cpu */ | |
250 | dai_link->platform_of_node = dai_link->cpu_of_node; | |
46c39cae | 251 | |
6a91a17b JFM |
252 | name = devm_kzalloc(dev, |
253 | strlen(dai_link->cpu_dai_name) + | |
254 | strlen(dai_link->codec_dai_name) + 2, | |
255 | GFP_KERNEL); | |
256 | sprintf(name, "%s-%s", dai_link->cpu_dai_name, | |
257 | dai_link->codec_dai_name); | |
258 | dai_link->name = dai_link->stream_name = name; | |
259 | ||
260 | if (!multi) | |
261 | break; | |
262 | ||
263 | dai_link++; | |
264 | dai_props++; | |
265 | } | |
dd41e0c4 | 266 | |
fa558c28 | 267 | /* card name is created from CPU/CODEC dai name */ |
6a91a17b | 268 | dai_link = priv->snd_card.dai_link; |
2772555b | 269 | if (!priv->snd_card.name) |
6a91a17b | 270 | priv->snd_card.name = dai_link->name; |
fa558c28 | 271 | |
6a91a17b | 272 | dev_dbg(dev, "card-name : %s\n", priv->snd_card.name); |
c56c4d74 | 273 | dev_dbg(dev, "platform : %04x\n", daifmt); |
6a91a17b | 274 | dai_props = priv->dai_props; |
fa558c28 | 275 | dev_dbg(dev, "cpu : %s / %04x / %d\n", |
52008472 | 276 | dai_link->cpu_dai_name, |
6a91a17b JFM |
277 | dai_props->cpu_dai.fmt, |
278 | dai_props->cpu_dai.sysclk); | |
fa558c28 | 279 | dev_dbg(dev, "codec : %s / %04x / %d\n", |
52008472 | 280 | dai_link->codec_dai_name, |
6a91a17b JFM |
281 | dai_props->codec_dai.fmt, |
282 | dai_props->codec_dai.sysclk); | |
f687d900 | 283 | |
fa558c28 | 284 | return 0; |
6a91a17b JFM |
285 | |
286 | err: | |
287 | of_node_put(np); | |
288 | return ret; | |
fa558c28 KM |
289 | } |
290 | ||
e512e001 JFM |
291 | /* update the reference count of the devices nodes at end of probe */ |
292 | static int asoc_simple_card_unref(struct platform_device *pdev) | |
293 | { | |
294 | struct snd_soc_card *card = platform_get_drvdata(pdev); | |
295 | struct snd_soc_dai_link *dai_link; | |
296 | struct device_node *np; | |
297 | int num_links; | |
298 | ||
299 | for (num_links = 0, dai_link = card->dai_link; | |
300 | num_links < card->num_links; | |
301 | num_links++, dai_link++) { | |
302 | np = (struct device_node *) dai_link->cpu_of_node; | |
303 | if (np) | |
304 | of_node_put(np); | |
305 | np = (struct device_node *) dai_link->codec_of_node; | |
306 | if (np) | |
307 | of_node_put(np); | |
308 | } | |
309 | return 0; | |
310 | } | |
311 | ||
f2390880 KM |
312 | static int asoc_simple_card_probe(struct platform_device *pdev) |
313 | { | |
45fce594 | 314 | struct simple_card_data *priv; |
5ca8ba41 | 315 | struct snd_soc_dai_link *dai_link; |
fa558c28 | 316 | struct device_node *np = pdev->dev.of_node; |
f89983ef | 317 | struct device *dev = &pdev->dev; |
6a91a17b JFM |
318 | int num_links, multi, ret; |
319 | ||
320 | /* get the number of DAI links */ | |
321 | if (np && of_get_child_by_name(np, "simple-audio-card,dai-link")) { | |
322 | num_links = of_get_child_count(np); | |
323 | multi = 1; | |
324 | } else { | |
325 | num_links = 1; | |
326 | multi = 0; | |
327 | } | |
f2390880 | 328 | |
cf7dc23c JFM |
329 | /* allocate the private data and the DAI link array */ |
330 | priv = devm_kzalloc(dev, | |
6a91a17b | 331 | sizeof(*priv) + sizeof(*dai_link) * num_links, |
cf7dc23c | 332 | GFP_KERNEL); |
ca65b492 | 333 | if (!priv) |
ca919fe4 XL |
334 | return -ENOMEM; |
335 | ||
201a0eac JFM |
336 | /* |
337 | * init snd_soc_card | |
338 | */ | |
ca65b492 JFM |
339 | priv->snd_card.owner = THIS_MODULE; |
340 | priv->snd_card.dev = dev; | |
cf7dc23c | 341 | dai_link = priv->dai_link; |
ca65b492 | 342 | priv->snd_card.dai_link = dai_link; |
6a91a17b | 343 | priv->snd_card.num_links = num_links; |
201a0eac | 344 | |
cf7dc23c JFM |
345 | /* get room for the other properties */ |
346 | priv->dai_props = devm_kzalloc(dev, | |
6a91a17b | 347 | sizeof(*priv->dai_props) * num_links, |
cf7dc23c JFM |
348 | GFP_KERNEL); |
349 | if (!priv->dai_props) | |
350 | return -ENOMEM; | |
351 | ||
fa558c28 | 352 | if (np && of_device_is_available(np)) { |
ca919fe4 | 353 | |
6a91a17b | 354 | ret = asoc_simple_card_parse_of(np, priv, dev, multi); |
ca919fe4 XL |
355 | if (ret < 0) { |
356 | if (ret != -EPROBE_DEFER) | |
357 | dev_err(dev, "parse error %d\n", ret); | |
e512e001 | 358 | goto err; |
fa558c28 | 359 | } |
6a91a17b JFM |
360 | |
361 | /* | |
362 | * soc_bind_dai_link() will check cpu name | |
363 | * after of_node matching if dai_link has cpu_dai_name. | |
364 | * but, it will never match if name was created by fmt_single_name() | |
365 | * remove cpu_dai_name to escape name matching. | |
366 | * see | |
367 | * fmt_single_name() | |
368 | * fmt_multiple_name() | |
369 | */ | |
370 | if (num_links == 1) | |
371 | dai_link->cpu_dai_name = NULL; | |
372 | ||
fa558c28 | 373 | } else { |
ca65b492 JFM |
374 | struct asoc_simple_card_info *cinfo; |
375 | ||
376 | cinfo = dev->platform_data; | |
377 | if (!cinfo) { | |
34787d0a XL |
378 | dev_err(dev, "no info for asoc-simple-card\n"); |
379 | return -EINVAL; | |
380 | } | |
fa558c28 | 381 | |
7722f830 | 382 | if (!cinfo->name || |
7722f830 JFM |
383 | !cinfo->codec_dai.name || |
384 | !cinfo->codec || | |
385 | !cinfo->platform || | |
386 | !cinfo->cpu_dai.name) { | |
387 | dev_err(dev, "insufficient asoc_simple_card_info settings\n"); | |
388 | return -EINVAL; | |
389 | } | |
2bee9914 | 390 | |
12ffa6fc | 391 | priv->snd_card.name = (cinfo->card) ? cinfo->card : cinfo->name; |
5ca8ba41 JFM |
392 | dai_link->name = cinfo->name; |
393 | dai_link->stream_name = cinfo->name; | |
394 | dai_link->platform_name = cinfo->platform; | |
395 | dai_link->codec_name = cinfo->codec; | |
52008472 JFM |
396 | dai_link->cpu_dai_name = cinfo->cpu_dai.name; |
397 | dai_link->codec_dai_name = cinfo->codec_dai.name; | |
cf7dc23c JFM |
398 | memcpy(&priv->dai_props->cpu_dai, &cinfo->cpu_dai, |
399 | sizeof(priv->dai_props->cpu_dai)); | |
400 | memcpy(&priv->dai_props->codec_dai, &cinfo->codec_dai, | |
401 | sizeof(priv->dai_props->codec_dai)); | |
81985bd6 | 402 | |
cf7dc23c JFM |
403 | priv->dai_props->cpu_dai.fmt |= cinfo->daifmt; |
404 | priv->dai_props->codec_dai.fmt |= cinfo->daifmt; | |
f2390880 KM |
405 | } |
406 | ||
407 | /* | |
408 | * init snd_soc_dai_link | |
409 | */ | |
5ca8ba41 | 410 | dai_link->init = asoc_simple_card_dai_init; |
f2390880 | 411 | |
ca65b492 | 412 | snd_soc_card_set_drvdata(&priv->snd_card, priv); |
f2390880 | 413 | |
e512e001 JFM |
414 | ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card); |
415 | ||
416 | err: | |
417 | asoc_simple_card_unref(pdev); | |
418 | return ret; | |
f2390880 KM |
419 | } |
420 | ||
fa558c28 KM |
421 | static const struct of_device_id asoc_simple_of_match[] = { |
422 | { .compatible = "simple-audio-card", }, | |
423 | {}, | |
424 | }; | |
425 | MODULE_DEVICE_TABLE(of, asoc_simple_of_match); | |
426 | ||
f2390880 KM |
427 | static struct platform_driver asoc_simple_card = { |
428 | .driver = { | |
429 | .name = "asoc-simple-card", | |
c445be35 | 430 | .owner = THIS_MODULE, |
fa558c28 | 431 | .of_match_table = asoc_simple_of_match, |
f2390880 KM |
432 | }, |
433 | .probe = asoc_simple_card_probe, | |
f2390880 KM |
434 | }; |
435 | ||
436 | module_platform_driver(asoc_simple_card); | |
437 | ||
c445be35 | 438 | MODULE_ALIAS("platform:asoc-simple-card"); |
f2390880 KM |
439 | MODULE_LICENSE("GPL"); |
440 | MODULE_DESCRIPTION("ASoC Simple Sound Card"); | |
441 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |