Commit | Line | Data |
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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; | |
23 | unsigned int daifmt; | |
24 | struct asoc_simple_dai cpu_dai; | |
25 | struct asoc_simple_dai codec_dai; | |
26 | struct snd_soc_dai_link snd_link; | |
27 | }; | |
28 | ||
a4a2992c | 29 | static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai, |
30d0341e | 30 | struct asoc_simple_dai *set) |
a4a2992c | 31 | { |
4763ebe2 | 32 | int ret; |
a4a2992c | 33 | |
30d0341e XL |
34 | if (set->fmt) { |
35 | ret = snd_soc_dai_set_fmt(dai, set->fmt); | |
4763ebe2 XL |
36 | if (ret && ret != -ENOTSUPP) { |
37 | dev_err(dai->dev, "simple-card: set_fmt error\n"); | |
38 | goto err; | |
39 | } | |
e244bb9b KM |
40 | } |
41 | ||
4763ebe2 | 42 | if (set->sysclk) { |
a4a2992c | 43 | ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0); |
4763ebe2 XL |
44 | if (ret && ret != -ENOTSUPP) { |
45 | dev_err(dai->dev, "simple-card: set_sysclk error\n"); | |
46 | goto err; | |
47 | } | |
48 | } | |
49 | ||
6ff62eed XL |
50 | if (set->slots) { |
51 | ret = snd_soc_dai_set_tdm_slot(dai, 0, 0, | |
52 | set->slots, | |
53 | set->slot_width); | |
54 | if (ret && ret != -ENOTSUPP) { | |
55 | dev_err(dai->dev, "simple-card: set_tdm_slot error\n"); | |
56 | goto err; | |
57 | } | |
58 | } | |
59 | ||
4763ebe2 | 60 | ret = 0; |
a4a2992c | 61 | |
4763ebe2 | 62 | err: |
a4a2992c KM |
63 | return ret; |
64 | } | |
65 | ||
f2390880 KM |
66 | static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd) |
67 | { | |
b367a325 | 68 | struct simple_card_data *priv = |
ba194a4d | 69 | 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; | |
f2390880 KM |
72 | int ret; |
73 | ||
30d0341e | 74 | ret = __asoc_simple_card_dai_init(codec, &priv->codec_dai); |
a4a2992c KM |
75 | if (ret < 0) |
76 | return ret; | |
f2390880 | 77 | |
30d0341e | 78 | ret = __asoc_simple_card_dai_init(cpu, &priv->cpu_dai); |
a4a2992c KM |
79 | if (ret < 0) |
80 | return ret; | |
f2390880 KM |
81 | |
82 | return 0; | |
83 | } | |
84 | ||
fa558c28 KM |
85 | static int |
86 | asoc_simple_card_sub_parse_of(struct device_node *np, | |
30d0341e | 87 | unsigned int daifmt, |
fa558c28 | 88 | struct asoc_simple_dai *dai, |
52008472 JFM |
89 | const struct device_node **p_node, |
90 | const char **name) | |
fa558c28 | 91 | { |
201a0eac | 92 | struct device_node *node; |
fa558c28 KM |
93 | struct clk *clk; |
94 | int ret; | |
95 | ||
96 | /* | |
97 | * get node via "sound-dai = <&phandle port>" | |
98 | * it will be used as xxx_of_node on soc_bind_dai_link() | |
99 | */ | |
201a0eac JFM |
100 | node = of_parse_phandle(np, "sound-dai", 0); |
101 | if (!node) | |
fa558c28 | 102 | return -ENODEV; |
201a0eac | 103 | *p_node = node; |
fa558c28 KM |
104 | |
105 | /* get dai->name */ | |
52008472 | 106 | ret = snd_soc_of_get_dai_name(np, name); |
fa558c28 KM |
107 | if (ret < 0) |
108 | goto parse_error; | |
109 | ||
6ff62eed XL |
110 | /* parse TDM slot */ |
111 | ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width); | |
112 | if (ret) | |
113 | goto parse_error; | |
114 | ||
fa558c28 KM |
115 | /* |
116 | * bitclock-inversion, frame-inversion | |
117 | * bitclock-master, frame-master | |
118 | * and specific "format" if it has | |
119 | */ | |
120 | dai->fmt = snd_soc_of_parse_daifmt(np, NULL); | |
30d0341e | 121 | dai->fmt |= daifmt; |
fa558c28 KM |
122 | |
123 | /* | |
124 | * dai->sysclk come from | |
125 | * "clocks = <&xxx>" (if system has common clock) | |
126 | * or "system-clock-frequency = <xxx>" | |
71467e46 | 127 | * or device's module clock. |
fa558c28 | 128 | */ |
71467e46 XL |
129 | if (of_property_read_bool(np, "clocks")) { |
130 | clk = of_clk_get(np, 0); | |
131 | if (IS_ERR(clk)) { | |
132 | ret = PTR_ERR(clk); | |
133 | goto parse_error; | |
134 | } | |
135 | ||
136 | dai->sysclk = clk_get_rate(clk); | |
137 | } else if (of_property_read_bool(np, "system-clock-frequency")) { | |
fa558c28 KM |
138 | of_property_read_u32(np, |
139 | "system-clock-frequency", | |
140 | &dai->sysclk); | |
71467e46 | 141 | } else { |
201a0eac | 142 | clk = of_clk_get(node, 0); |
e2a19ac6 XL |
143 | if (!IS_ERR(clk)) |
144 | dai->sysclk = clk_get_rate(clk); | |
71467e46 | 145 | } |
fa558c28 KM |
146 | |
147 | ret = 0; | |
148 | ||
149 | parse_error: | |
201a0eac | 150 | of_node_put(node); |
fa558c28 KM |
151 | |
152 | return ret; | |
153 | } | |
154 | ||
155 | static int asoc_simple_card_parse_of(struct device_node *node, | |
b367a325 | 156 | struct simple_card_data *priv, |
201a0eac | 157 | struct device *dev) |
fa558c28 | 158 | { |
b367a325 | 159 | struct snd_soc_dai_link *dai_link = priv->snd_card.dai_link; |
fa558c28 KM |
160 | struct device_node *np; |
161 | char *name; | |
d4c22094 | 162 | int ret; |
fa558c28 | 163 | |
2772555b XL |
164 | /* parsing the card name from DT */ |
165 | snd_soc_of_parse_card_name(&priv->snd_card, "simple-audio-card,name"); | |
166 | ||
fa558c28 | 167 | /* get CPU/CODEC common format via simple-audio-card,format */ |
b367a325 | 168 | priv->daifmt = snd_soc_of_parse_daifmt(node, "simple-audio-card,") & |
fa558c28 KM |
169 | (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK); |
170 | ||
9d681f5b XL |
171 | /* off-codec widgets */ |
172 | if (of_property_read_bool(node, "simple-audio-card,widgets")) { | |
173 | ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card, | |
174 | "simple-audio-card,widgets"); | |
175 | if (ret) | |
176 | return ret; | |
177 | } | |
178 | ||
d4c22094 | 179 | /* DAPM routes */ |
8c0b8230 | 180 | if (of_property_read_bool(node, "simple-audio-card,routing")) { |
b367a325 | 181 | ret = snd_soc_of_parse_audio_routing(&priv->snd_card, |
8c0b8230 | 182 | "simple-audio-card,routing"); |
f87a3e82 XL |
183 | if (ret) |
184 | return ret; | |
185 | } | |
d4c22094 | 186 | |
fa558c28 KM |
187 | /* CPU sub-node */ |
188 | ret = -EINVAL; | |
189 | np = of_get_child_by_name(node, "simple-audio-card,cpu"); | |
190 | if (np) | |
30d0341e | 191 | ret = asoc_simple_card_sub_parse_of(np, priv->daifmt, |
b367a325 | 192 | &priv->cpu_dai, |
52008472 JFM |
193 | &dai_link->cpu_of_node, |
194 | &dai_link->cpu_dai_name); | |
fa558c28 KM |
195 | if (ret < 0) |
196 | return ret; | |
197 | ||
198 | /* CODEC sub-node */ | |
199 | ret = -EINVAL; | |
200 | np = of_get_child_by_name(node, "simple-audio-card,codec"); | |
201 | if (np) | |
30d0341e | 202 | ret = asoc_simple_card_sub_parse_of(np, priv->daifmt, |
b367a325 | 203 | &priv->codec_dai, |
52008472 JFM |
204 | &dai_link->codec_of_node, |
205 | &dai_link->codec_dai_name); | |
fa558c28 KM |
206 | if (ret < 0) |
207 | return ret; | |
208 | ||
52008472 | 209 | if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) |
dd41e0c4 XL |
210 | return -EINVAL; |
211 | ||
fa558c28 KM |
212 | /* card name is created from CPU/CODEC dai name */ |
213 | name = devm_kzalloc(dev, | |
52008472 JFM |
214 | strlen(dai_link->cpu_dai_name) + |
215 | strlen(dai_link->codec_dai_name) + 2, | |
fa558c28 | 216 | GFP_KERNEL); |
52008472 JFM |
217 | sprintf(name, "%s-%s", dai_link->cpu_dai_name, |
218 | dai_link->codec_dai_name); | |
2772555b XL |
219 | if (!priv->snd_card.name) |
220 | priv->snd_card.name = name; | |
5ca8ba41 | 221 | dai_link->name = dai_link->stream_name = name; |
fa558c28 KM |
222 | |
223 | /* simple-card assumes platform == cpu */ | |
5ca8ba41 | 224 | dai_link->platform_of_node = dai_link->cpu_of_node; |
fa558c28 | 225 | |
2bee9914 | 226 | dev_dbg(dev, "card-name : %s\n", name); |
b367a325 | 227 | dev_dbg(dev, "platform : %04x\n", priv->daifmt); |
fa558c28 | 228 | dev_dbg(dev, "cpu : %s / %04x / %d\n", |
52008472 | 229 | dai_link->cpu_dai_name, |
b367a325 JFM |
230 | priv->cpu_dai.fmt, |
231 | priv->cpu_dai.sysclk); | |
fa558c28 | 232 | dev_dbg(dev, "codec : %s / %04x / %d\n", |
52008472 | 233 | dai_link->codec_dai_name, |
b367a325 JFM |
234 | priv->codec_dai.fmt, |
235 | priv->codec_dai.sysclk); | |
fa558c28 | 236 | |
f687d900 KM |
237 | /* |
238 | * soc_bind_dai_link() will check cpu name | |
239 | * after of_node matching if dai_link has cpu_dai_name. | |
240 | * but, it will never match if name was created by fmt_single_name() | |
241 | * remove cpu_dai_name to escape name matching. | |
242 | * see | |
243 | * fmt_single_name() | |
244 | * fmt_multiple_name() | |
245 | */ | |
246 | dai_link->cpu_dai_name = NULL; | |
247 | ||
fa558c28 KM |
248 | return 0; |
249 | } | |
250 | ||
f2390880 KM |
251 | static int asoc_simple_card_probe(struct platform_device *pdev) |
252 | { | |
45fce594 | 253 | struct simple_card_data *priv; |
5ca8ba41 | 254 | struct snd_soc_dai_link *dai_link; |
fa558c28 | 255 | struct device_node *np = pdev->dev.of_node; |
f89983ef | 256 | struct device *dev = &pdev->dev; |
ca919fe4 | 257 | int ret; |
f2390880 | 258 | |
ca65b492 JFM |
259 | priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); |
260 | if (!priv) | |
ca919fe4 XL |
261 | return -ENOMEM; |
262 | ||
201a0eac JFM |
263 | /* |
264 | * init snd_soc_card | |
265 | */ | |
ca65b492 JFM |
266 | priv->snd_card.owner = THIS_MODULE; |
267 | priv->snd_card.dev = dev; | |
268 | dai_link = &priv->snd_link; | |
269 | priv->snd_card.dai_link = dai_link; | |
270 | priv->snd_card.num_links = 1; | |
201a0eac | 271 | |
fa558c28 | 272 | if (np && of_device_is_available(np)) { |
ca919fe4 | 273 | |
ca65b492 | 274 | ret = asoc_simple_card_parse_of(np, priv, dev); |
ca919fe4 XL |
275 | if (ret < 0) { |
276 | if (ret != -EPROBE_DEFER) | |
277 | dev_err(dev, "parse error %d\n", ret); | |
278 | return ret; | |
fa558c28 KM |
279 | } |
280 | } else { | |
ca65b492 JFM |
281 | struct asoc_simple_card_info *cinfo; |
282 | ||
283 | cinfo = dev->platform_data; | |
284 | if (!cinfo) { | |
34787d0a XL |
285 | dev_err(dev, "no info for asoc-simple-card\n"); |
286 | return -EINVAL; | |
287 | } | |
fa558c28 | 288 | |
7722f830 JFM |
289 | if (!cinfo->name || |
290 | !cinfo->card || | |
291 | !cinfo->codec_dai.name || | |
292 | !cinfo->codec || | |
293 | !cinfo->platform || | |
294 | !cinfo->cpu_dai.name) { | |
295 | dev_err(dev, "insufficient asoc_simple_card_info settings\n"); | |
296 | return -EINVAL; | |
297 | } | |
2bee9914 | 298 | |
ca65b492 | 299 | priv->snd_card.name = cinfo->card; |
5ca8ba41 JFM |
300 | dai_link->name = cinfo->name; |
301 | dai_link->stream_name = cinfo->name; | |
302 | dai_link->platform_name = cinfo->platform; | |
303 | dai_link->codec_name = cinfo->codec; | |
52008472 JFM |
304 | dai_link->cpu_dai_name = cinfo->cpu_dai.name; |
305 | dai_link->codec_dai_name = cinfo->codec_dai.name; | |
ca65b492 JFM |
306 | memcpy(&priv->cpu_dai, &cinfo->cpu_dai, |
307 | sizeof(priv->cpu_dai)); | |
308 | memcpy(&priv->codec_dai, &cinfo->codec_dai, | |
309 | sizeof(priv->codec_dai)); | |
f2390880 KM |
310 | } |
311 | ||
312 | /* | |
313 | * init snd_soc_dai_link | |
314 | */ | |
5ca8ba41 | 315 | dai_link->init = asoc_simple_card_dai_init; |
f2390880 | 316 | |
ca65b492 | 317 | snd_soc_card_set_drvdata(&priv->snd_card, priv); |
f2390880 | 318 | |
ca65b492 | 319 | return devm_snd_soc_register_card(&pdev->dev, &priv->snd_card); |
f2390880 KM |
320 | } |
321 | ||
fa558c28 KM |
322 | static const struct of_device_id asoc_simple_of_match[] = { |
323 | { .compatible = "simple-audio-card", }, | |
324 | {}, | |
325 | }; | |
326 | MODULE_DEVICE_TABLE(of, asoc_simple_of_match); | |
327 | ||
f2390880 KM |
328 | static struct platform_driver asoc_simple_card = { |
329 | .driver = { | |
330 | .name = "asoc-simple-card", | |
c445be35 | 331 | .owner = THIS_MODULE, |
fa558c28 | 332 | .of_match_table = asoc_simple_of_match, |
f2390880 KM |
333 | }, |
334 | .probe = asoc_simple_card_probe, | |
f2390880 KM |
335 | }; |
336 | ||
337 | module_platform_driver(asoc_simple_card); | |
338 | ||
c445be35 | 339 | MODULE_ALIAS("platform:asoc-simple-card"); |
f2390880 KM |
340 | MODULE_LICENSE("GPL"); |
341 | MODULE_DESCRIPTION("ASoC Simple Sound Card"); | |
342 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |