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 | { | |
781cbebe | 69 | struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card); |
f2390880 KM |
70 | struct snd_soc_dai *codec = rtd->codec_dai; |
71 | struct snd_soc_dai *cpu = rtd->cpu_dai; | |
6a91a17b JFM |
72 | struct simple_dai_props *dai_props; |
73 | int num, ret; | |
f2390880 | 74 | |
6a91a17b JFM |
75 | num = rtd - rtd->card->rtd; |
76 | dai_props = &priv->dai_props[num]; | |
77 | ret = __asoc_simple_card_dai_init(codec, &dai_props->codec_dai); | |
a4a2992c KM |
78 | if (ret < 0) |
79 | return ret; | |
f2390880 | 80 | |
6a91a17b | 81 | ret = __asoc_simple_card_dai_init(cpu, &dai_props->cpu_dai); |
a4a2992c KM |
82 | if (ret < 0) |
83 | return ret; | |
f2390880 KM |
84 | |
85 | return 0; | |
86 | } | |
87 | ||
fa558c28 KM |
88 | static int |
89 | asoc_simple_card_sub_parse_of(struct device_node *np, | |
90 | struct asoc_simple_dai *dai, | |
52008472 JFM |
91 | const struct device_node **p_node, |
92 | const char **name) | |
fa558c28 | 93 | { |
201a0eac | 94 | struct device_node *node; |
fa558c28 KM |
95 | struct clk *clk; |
96 | int ret; | |
97 | ||
98 | /* | |
99 | * get node via "sound-dai = <&phandle port>" | |
100 | * it will be used as xxx_of_node on soc_bind_dai_link() | |
101 | */ | |
201a0eac JFM |
102 | node = of_parse_phandle(np, "sound-dai", 0); |
103 | if (!node) | |
fa558c28 | 104 | return -ENODEV; |
201a0eac | 105 | *p_node = node; |
fa558c28 KM |
106 | |
107 | /* get dai->name */ | |
52008472 | 108 | ret = snd_soc_of_get_dai_name(np, name); |
fa558c28 | 109 | if (ret < 0) |
e512e001 | 110 | return ret; |
fa558c28 | 111 | |
6ff62eed XL |
112 | /* parse TDM slot */ |
113 | ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width); | |
114 | if (ret) | |
e512e001 | 115 | return ret; |
6ff62eed | 116 | |
fa558c28 KM |
117 | /* |
118 | * dai->sysclk come from | |
119 | * "clocks = <&xxx>" (if system has common clock) | |
120 | * or "system-clock-frequency = <xxx>" | |
71467e46 | 121 | * or device's module clock. |
fa558c28 | 122 | */ |
71467e46 XL |
123 | if (of_property_read_bool(np, "clocks")) { |
124 | clk = of_clk_get(np, 0); | |
125 | if (IS_ERR(clk)) { | |
126 | ret = PTR_ERR(clk); | |
e512e001 | 127 | return ret; |
71467e46 XL |
128 | } |
129 | ||
130 | dai->sysclk = clk_get_rate(clk); | |
131 | } else if (of_property_read_bool(np, "system-clock-frequency")) { | |
fa558c28 KM |
132 | of_property_read_u32(np, |
133 | "system-clock-frequency", | |
134 | &dai->sysclk); | |
71467e46 | 135 | } else { |
201a0eac | 136 | clk = of_clk_get(node, 0); |
e2a19ac6 XL |
137 | if (!IS_ERR(clk)) |
138 | dai->sysclk = clk_get_rate(clk); | |
71467e46 | 139 | } |
fa558c28 | 140 | |
e512e001 | 141 | return 0; |
fa558c28 KM |
142 | } |
143 | ||
b3ca11ff JS |
144 | static int simple_card_dai_link_of(struct device_node *node, |
145 | struct device *dev, | |
146 | struct snd_soc_dai_link *dai_link, | |
147 | struct simple_dai_props *dai_props) | |
6a91a17b | 148 | { |
b3ca11ff JS |
149 | struct device_node *np = NULL; |
150 | struct device_node *bitclkmaster = NULL; | |
151 | struct device_node *framemaster = NULL; | |
152 | unsigned int daifmt; | |
153 | char *name; | |
154 | char prop[128]; | |
155 | char *prefix = ""; | |
6a91a17b JFM |
156 | int ret; |
157 | ||
50e6c718 | 158 | prefix = "simple-audio-card,"; |
b3ca11ff JS |
159 | |
160 | daifmt = snd_soc_of_parse_daifmt(node, prefix, | |
161 | &bitclkmaster, &framemaster); | |
162 | daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK; | |
163 | ||
164 | snprintf(prop, sizeof(prop), "%scpu", prefix); | |
165 | np = of_get_child_by_name(node, prop); | |
166 | if (!np) { | |
167 | ret = -EINVAL; | |
966b8063 | 168 | dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop); |
b3ca11ff | 169 | goto dai_link_of_err; |
6a91a17b | 170 | } |
b3ca11ff JS |
171 | |
172 | ret = asoc_simple_card_sub_parse_of(np, &dai_props->cpu_dai, | |
173 | &dai_link->cpu_of_node, | |
174 | &dai_link->cpu_dai_name); | |
6a91a17b | 175 | if (ret < 0) |
b3ca11ff JS |
176 | goto dai_link_of_err; |
177 | ||
178 | dai_props->cpu_dai.fmt = daifmt; | |
781cbebe | 179 | switch (((np == bitclkmaster) << 4) | (np == framemaster)) { |
b3ca11ff JS |
180 | case 0x11: |
181 | dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBS_CFS; | |
182 | break; | |
183 | case 0x10: | |
184 | dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBS_CFM; | |
185 | break; | |
186 | case 0x01: | |
187 | dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBM_CFS; | |
188 | break; | |
189 | default: | |
190 | dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBM_CFM; | |
191 | break; | |
192 | } | |
6a91a17b | 193 | |
b3ca11ff JS |
194 | of_node_put(np); |
195 | snprintf(prop, sizeof(prop), "%scodec", prefix); | |
196 | np = of_get_child_by_name(node, prop); | |
197 | if (!np) { | |
198 | ret = -EINVAL; | |
966b8063 | 199 | dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop); |
b3ca11ff | 200 | goto dai_link_of_err; |
6a91a17b | 201 | } |
b3ca11ff JS |
202 | |
203 | ret = asoc_simple_card_sub_parse_of(np, &dai_props->codec_dai, | |
204 | &dai_link->codec_of_node, | |
205 | &dai_link->codec_dai_name); | |
206 | if (ret < 0) | |
207 | goto dai_link_of_err; | |
208 | ||
209 | if (strlen(prefix) && !bitclkmaster && !framemaster) { | |
210 | /* No dai-link level and master setting was not found from | |
211 | sound node level, revert back to legacy DT parsing and | |
212 | take the settings from codec node. */ | |
213 | dev_dbg(dev, "%s: Revert to legacy daifmt parsing\n", | |
214 | __func__); | |
215 | dai_props->cpu_dai.fmt = dai_props->codec_dai.fmt = | |
216 | snd_soc_of_parse_daifmt(np, NULL, NULL, NULL) | | |
217 | (daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK); | |
218 | } else { | |
219 | dai_props->codec_dai.fmt = daifmt; | |
781cbebe | 220 | switch (((np == bitclkmaster) << 4) | (np == framemaster)) { |
b3ca11ff JS |
221 | case 0x11: |
222 | dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBM_CFM; | |
223 | break; | |
224 | case 0x10: | |
225 | dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBM_CFS; | |
226 | break; | |
227 | case 0x01: | |
228 | dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBS_CFM; | |
229 | break; | |
230 | default: | |
231 | dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBS_CFS; | |
232 | break; | |
233 | } | |
234 | } | |
235 | ||
236 | if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) { | |
781cbebe NC |
237 | ret = -EINVAL; |
238 | goto dai_link_of_err; | |
b3ca11ff JS |
239 | } |
240 | ||
241 | /* simple-card assumes platform == cpu */ | |
242 | dai_link->platform_of_node = dai_link->cpu_of_node; | |
243 | ||
244 | /* Link name is created from CPU/CODEC dai name */ | |
245 | name = devm_kzalloc(dev, | |
246 | strlen(dai_link->cpu_dai_name) + | |
247 | strlen(dai_link->codec_dai_name) + 2, | |
248 | GFP_KERNEL); | |
249 | sprintf(name, "%s-%s", dai_link->cpu_dai_name, | |
250 | dai_link->codec_dai_name); | |
251 | dai_link->name = dai_link->stream_name = name; | |
252 | ||
253 | dev_dbg(dev, "\tname : %s\n", dai_link->stream_name); | |
254 | dev_dbg(dev, "\tcpu : %s / %04x / %d\n", | |
255 | dai_link->cpu_dai_name, | |
256 | dai_props->cpu_dai.fmt, | |
257 | dai_props->cpu_dai.sysclk); | |
258 | dev_dbg(dev, "\tcodec : %s / %04x / %d\n", | |
259 | dai_link->codec_dai_name, | |
260 | dai_props->codec_dai.fmt, | |
261 | dai_props->codec_dai.sysclk); | |
262 | ||
263 | dai_link_of_err: | |
264 | if (np) | |
265 | of_node_put(np); | |
266 | if (bitclkmaster) | |
267 | of_node_put(bitclkmaster); | |
268 | if (framemaster) | |
269 | of_node_put(framemaster); | |
6a91a17b JFM |
270 | return ret; |
271 | } | |
272 | ||
fa558c28 | 273 | static int asoc_simple_card_parse_of(struct device_node *node, |
b367a325 | 274 | struct simple_card_data *priv, |
6a91a17b JFM |
275 | struct device *dev, |
276 | int multi) | |
fa558c28 | 277 | { |
b367a325 | 278 | struct snd_soc_dai_link *dai_link = priv->snd_card.dai_link; |
6a91a17b | 279 | struct simple_dai_props *dai_props = priv->dai_props; |
d4c22094 | 280 | int ret; |
fa558c28 | 281 | |
2772555b XL |
282 | /* parsing the card name from DT */ |
283 | snd_soc_of_parse_card_name(&priv->snd_card, "simple-audio-card,name"); | |
284 | ||
9d681f5b XL |
285 | /* off-codec widgets */ |
286 | if (of_property_read_bool(node, "simple-audio-card,widgets")) { | |
287 | ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card, | |
288 | "simple-audio-card,widgets"); | |
289 | if (ret) | |
290 | return ret; | |
291 | } | |
292 | ||
d4c22094 | 293 | /* DAPM routes */ |
8c0b8230 | 294 | if (of_property_read_bool(node, "simple-audio-card,routing")) { |
b367a325 | 295 | ret = snd_soc_of_parse_audio_routing(&priv->snd_card, |
8c0b8230 | 296 | "simple-audio-card,routing"); |
f87a3e82 XL |
297 | if (ret) |
298 | return ret; | |
299 | } | |
d4c22094 | 300 | |
b3ca11ff JS |
301 | dev_dbg(dev, "New simple-card: %s\n", priv->snd_card.name ? |
302 | priv->snd_card.name : ""); | |
303 | ||
304 | if (multi) { | |
305 | struct device_node *np = NULL; | |
306 | int i; | |
307 | for (i = 0; (np = of_get_next_child(node, np)); i++) { | |
308 | dev_dbg(dev, "\tlink %d:\n", i); | |
309 | ret = simple_card_dai_link_of(np, dev, dai_link + i, | |
310 | dai_props + i); | |
311 | if (ret < 0) { | |
312 | of_node_put(np); | |
313 | return ret; | |
314 | } | |
6a91a17b | 315 | } |
b3ca11ff JS |
316 | } else { |
317 | ret = simple_card_dai_link_of(node, dev, dai_link, dai_props); | |
6a91a17b | 318 | if (ret < 0) |
b3ca11ff | 319 | return ret; |
6a91a17b | 320 | } |
dd41e0c4 | 321 | |
2772555b | 322 | if (!priv->snd_card.name) |
b3ca11ff | 323 | priv->snd_card.name = priv->snd_card.dai_link->name; |
f687d900 | 324 | |
fa558c28 KM |
325 | return 0; |
326 | } | |
327 | ||
e512e001 JFM |
328 | /* update the reference count of the devices nodes at end of probe */ |
329 | static int asoc_simple_card_unref(struct platform_device *pdev) | |
330 | { | |
331 | struct snd_soc_card *card = platform_get_drvdata(pdev); | |
332 | struct snd_soc_dai_link *dai_link; | |
333 | struct device_node *np; | |
334 | int num_links; | |
335 | ||
336 | for (num_links = 0, dai_link = card->dai_link; | |
337 | num_links < card->num_links; | |
338 | num_links++, dai_link++) { | |
339 | np = (struct device_node *) dai_link->cpu_of_node; | |
340 | if (np) | |
341 | of_node_put(np); | |
342 | np = (struct device_node *) dai_link->codec_of_node; | |
343 | if (np) | |
344 | of_node_put(np); | |
345 | } | |
346 | return 0; | |
347 | } | |
348 | ||
f2390880 KM |
349 | static int asoc_simple_card_probe(struct platform_device *pdev) |
350 | { | |
45fce594 | 351 | struct simple_card_data *priv; |
5ca8ba41 | 352 | struct snd_soc_dai_link *dai_link; |
fa558c28 | 353 | struct device_node *np = pdev->dev.of_node; |
f89983ef | 354 | struct device *dev = &pdev->dev; |
6a91a17b JFM |
355 | int num_links, multi, ret; |
356 | ||
357 | /* get the number of DAI links */ | |
358 | if (np && of_get_child_by_name(np, "simple-audio-card,dai-link")) { | |
359 | num_links = of_get_child_count(np); | |
360 | multi = 1; | |
361 | } else { | |
362 | num_links = 1; | |
363 | multi = 0; | |
364 | } | |
f2390880 | 365 | |
cf7dc23c JFM |
366 | /* allocate the private data and the DAI link array */ |
367 | priv = devm_kzalloc(dev, | |
6a91a17b | 368 | sizeof(*priv) + sizeof(*dai_link) * num_links, |
cf7dc23c | 369 | GFP_KERNEL); |
ca65b492 | 370 | if (!priv) |
ca919fe4 XL |
371 | return -ENOMEM; |
372 | ||
201a0eac JFM |
373 | /* |
374 | * init snd_soc_card | |
375 | */ | |
ca65b492 JFM |
376 | priv->snd_card.owner = THIS_MODULE; |
377 | priv->snd_card.dev = dev; | |
cf7dc23c | 378 | dai_link = priv->dai_link; |
ca65b492 | 379 | priv->snd_card.dai_link = dai_link; |
6a91a17b | 380 | priv->snd_card.num_links = num_links; |
201a0eac | 381 | |
cf7dc23c JFM |
382 | /* get room for the other properties */ |
383 | priv->dai_props = devm_kzalloc(dev, | |
6a91a17b | 384 | sizeof(*priv->dai_props) * num_links, |
cf7dc23c JFM |
385 | GFP_KERNEL); |
386 | if (!priv->dai_props) | |
387 | return -ENOMEM; | |
388 | ||
fa558c28 | 389 | if (np && of_device_is_available(np)) { |
ca919fe4 | 390 | |
6a91a17b | 391 | ret = asoc_simple_card_parse_of(np, priv, dev, multi); |
ca919fe4 XL |
392 | if (ret < 0) { |
393 | if (ret != -EPROBE_DEFER) | |
394 | dev_err(dev, "parse error %d\n", ret); | |
e512e001 | 395 | goto err; |
fa558c28 | 396 | } |
6a91a17b JFM |
397 | |
398 | /* | |
399 | * soc_bind_dai_link() will check cpu name | |
400 | * after of_node matching if dai_link has cpu_dai_name. | |
401 | * but, it will never match if name was created by fmt_single_name() | |
402 | * remove cpu_dai_name to escape name matching. | |
403 | * see | |
404 | * fmt_single_name() | |
405 | * fmt_multiple_name() | |
406 | */ | |
407 | if (num_links == 1) | |
408 | dai_link->cpu_dai_name = NULL; | |
409 | ||
fa558c28 | 410 | } else { |
ca65b492 JFM |
411 | struct asoc_simple_card_info *cinfo; |
412 | ||
413 | cinfo = dev->platform_data; | |
414 | if (!cinfo) { | |
34787d0a XL |
415 | dev_err(dev, "no info for asoc-simple-card\n"); |
416 | return -EINVAL; | |
417 | } | |
fa558c28 | 418 | |
781cbebe NC |
419 | if (!cinfo->name || |
420 | !cinfo->codec_dai.name || | |
421 | !cinfo->codec || | |
422 | !cinfo->platform || | |
7722f830 JFM |
423 | !cinfo->cpu_dai.name) { |
424 | dev_err(dev, "insufficient asoc_simple_card_info settings\n"); | |
425 | return -EINVAL; | |
426 | } | |
2bee9914 | 427 | |
12ffa6fc | 428 | priv->snd_card.name = (cinfo->card) ? cinfo->card : cinfo->name; |
5ca8ba41 JFM |
429 | dai_link->name = cinfo->name; |
430 | dai_link->stream_name = cinfo->name; | |
431 | dai_link->platform_name = cinfo->platform; | |
432 | dai_link->codec_name = cinfo->codec; | |
52008472 JFM |
433 | dai_link->cpu_dai_name = cinfo->cpu_dai.name; |
434 | dai_link->codec_dai_name = cinfo->codec_dai.name; | |
cf7dc23c JFM |
435 | memcpy(&priv->dai_props->cpu_dai, &cinfo->cpu_dai, |
436 | sizeof(priv->dai_props->cpu_dai)); | |
437 | memcpy(&priv->dai_props->codec_dai, &cinfo->codec_dai, | |
438 | sizeof(priv->dai_props->codec_dai)); | |
81985bd6 | 439 | |
cf7dc23c JFM |
440 | priv->dai_props->cpu_dai.fmt |= cinfo->daifmt; |
441 | priv->dai_props->codec_dai.fmt |= cinfo->daifmt; | |
f2390880 KM |
442 | } |
443 | ||
444 | /* | |
445 | * init snd_soc_dai_link | |
446 | */ | |
5ca8ba41 | 447 | dai_link->init = asoc_simple_card_dai_init; |
f2390880 | 448 | |
ca65b492 | 449 | snd_soc_card_set_drvdata(&priv->snd_card, priv); |
f2390880 | 450 | |
e512e001 JFM |
451 | ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card); |
452 | ||
453 | err: | |
454 | asoc_simple_card_unref(pdev); | |
455 | return ret; | |
f2390880 KM |
456 | } |
457 | ||
fa558c28 KM |
458 | static const struct of_device_id asoc_simple_of_match[] = { |
459 | { .compatible = "simple-audio-card", }, | |
460 | {}, | |
461 | }; | |
462 | MODULE_DEVICE_TABLE(of, asoc_simple_of_match); | |
463 | ||
f2390880 KM |
464 | static struct platform_driver asoc_simple_card = { |
465 | .driver = { | |
781cbebe | 466 | .name = "asoc-simple-card", |
c445be35 | 467 | .owner = THIS_MODULE, |
fa558c28 | 468 | .of_match_table = asoc_simple_of_match, |
f2390880 | 469 | }, |
781cbebe | 470 | .probe = asoc_simple_card_probe, |
f2390880 KM |
471 | }; |
472 | ||
473 | module_platform_driver(asoc_simple_card); | |
474 | ||
c445be35 | 475 | MODULE_ALIAS("platform:asoc-simple-card"); |
f2390880 KM |
476 | MODULE_LICENSE("GPL"); |
477 | MODULE_DESCRIPTION("ASoC Simple Sound Card"); | |
478 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |