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> |
f2390880 | 12 | #include <linux/module.h> |
fa558c28 | 13 | #include <linux/of.h> |
f2390880 | 14 | #include <linux/platform_device.h> |
ca919fe4 | 15 | #include <linux/string.h> |
f2390880 KM |
16 | #include <sound/simple_card.h> |
17 | ||
45fce594 JFM |
18 | struct simple_card_data { |
19 | struct snd_soc_card snd_card; | |
20 | unsigned int daifmt; | |
21 | struct asoc_simple_dai cpu_dai; | |
22 | struct asoc_simple_dai codec_dai; | |
23 | struct snd_soc_dai_link snd_link; | |
24 | }; | |
25 | ||
a4a2992c | 26 | static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai, |
30d0341e | 27 | struct asoc_simple_dai *set) |
a4a2992c | 28 | { |
4763ebe2 | 29 | int ret; |
a4a2992c | 30 | |
30d0341e XL |
31 | if (set->fmt) { |
32 | ret = snd_soc_dai_set_fmt(dai, set->fmt); | |
4763ebe2 XL |
33 | if (ret && ret != -ENOTSUPP) { |
34 | dev_err(dai->dev, "simple-card: set_fmt error\n"); | |
35 | goto err; | |
36 | } | |
e244bb9b KM |
37 | } |
38 | ||
4763ebe2 | 39 | if (set->sysclk) { |
a4a2992c | 40 | ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0); |
4763ebe2 XL |
41 | if (ret && ret != -ENOTSUPP) { |
42 | dev_err(dai->dev, "simple-card: set_sysclk error\n"); | |
43 | goto err; | |
44 | } | |
45 | } | |
46 | ||
47 | ret = 0; | |
a4a2992c | 48 | |
4763ebe2 | 49 | err: |
a4a2992c KM |
50 | return ret; |
51 | } | |
52 | ||
f2390880 KM |
53 | static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd) |
54 | { | |
b367a325 | 55 | struct simple_card_data *priv = |
ba194a4d | 56 | snd_soc_card_get_drvdata(rtd->card); |
f2390880 KM |
57 | struct snd_soc_dai *codec = rtd->codec_dai; |
58 | struct snd_soc_dai *cpu = rtd->cpu_dai; | |
f2390880 KM |
59 | int ret; |
60 | ||
30d0341e | 61 | ret = __asoc_simple_card_dai_init(codec, &priv->codec_dai); |
a4a2992c KM |
62 | if (ret < 0) |
63 | return ret; | |
f2390880 | 64 | |
30d0341e | 65 | ret = __asoc_simple_card_dai_init(cpu, &priv->cpu_dai); |
a4a2992c KM |
66 | if (ret < 0) |
67 | return ret; | |
f2390880 KM |
68 | |
69 | return 0; | |
70 | } | |
71 | ||
fa558c28 KM |
72 | static int |
73 | asoc_simple_card_sub_parse_of(struct device_node *np, | |
30d0341e | 74 | unsigned int daifmt, |
fa558c28 | 75 | struct asoc_simple_dai *dai, |
52008472 JFM |
76 | const struct device_node **p_node, |
77 | const char **name) | |
fa558c28 | 78 | { |
201a0eac | 79 | struct device_node *node; |
fa558c28 KM |
80 | struct clk *clk; |
81 | int ret; | |
82 | ||
83 | /* | |
84 | * get node via "sound-dai = <&phandle port>" | |
85 | * it will be used as xxx_of_node on soc_bind_dai_link() | |
86 | */ | |
201a0eac JFM |
87 | node = of_parse_phandle(np, "sound-dai", 0); |
88 | if (!node) | |
fa558c28 | 89 | return -ENODEV; |
201a0eac | 90 | *p_node = node; |
fa558c28 KM |
91 | |
92 | /* get dai->name */ | |
52008472 | 93 | ret = snd_soc_of_get_dai_name(np, name); |
fa558c28 KM |
94 | if (ret < 0) |
95 | goto parse_error; | |
96 | ||
97 | /* | |
98 | * bitclock-inversion, frame-inversion | |
99 | * bitclock-master, frame-master | |
100 | * and specific "format" if it has | |
101 | */ | |
102 | dai->fmt = snd_soc_of_parse_daifmt(np, NULL); | |
30d0341e | 103 | dai->fmt |= daifmt; |
fa558c28 KM |
104 | |
105 | /* | |
106 | * dai->sysclk come from | |
107 | * "clocks = <&xxx>" (if system has common clock) | |
108 | * or "system-clock-frequency = <xxx>" | |
71467e46 | 109 | * or device's module clock. |
fa558c28 | 110 | */ |
71467e46 XL |
111 | if (of_property_read_bool(np, "clocks")) { |
112 | clk = of_clk_get(np, 0); | |
113 | if (IS_ERR(clk)) { | |
114 | ret = PTR_ERR(clk); | |
115 | goto parse_error; | |
116 | } | |
117 | ||
118 | dai->sysclk = clk_get_rate(clk); | |
119 | } else if (of_property_read_bool(np, "system-clock-frequency")) { | |
fa558c28 KM |
120 | of_property_read_u32(np, |
121 | "system-clock-frequency", | |
122 | &dai->sysclk); | |
71467e46 | 123 | } else { |
201a0eac | 124 | clk = of_clk_get(node, 0); |
e2a19ac6 XL |
125 | if (!IS_ERR(clk)) |
126 | dai->sysclk = clk_get_rate(clk); | |
71467e46 | 127 | } |
fa558c28 KM |
128 | |
129 | ret = 0; | |
130 | ||
131 | parse_error: | |
201a0eac | 132 | of_node_put(node); |
fa558c28 KM |
133 | |
134 | return ret; | |
135 | } | |
136 | ||
137 | static int asoc_simple_card_parse_of(struct device_node *node, | |
b367a325 | 138 | struct simple_card_data *priv, |
201a0eac | 139 | struct device *dev) |
fa558c28 | 140 | { |
b367a325 | 141 | struct snd_soc_dai_link *dai_link = priv->snd_card.dai_link; |
fa558c28 KM |
142 | struct device_node *np; |
143 | char *name; | |
d4c22094 | 144 | int ret; |
fa558c28 | 145 | |
2772555b XL |
146 | /* parsing the card name from DT */ |
147 | snd_soc_of_parse_card_name(&priv->snd_card, "simple-audio-card,name"); | |
148 | ||
fa558c28 | 149 | /* get CPU/CODEC common format via simple-audio-card,format */ |
b367a325 | 150 | priv->daifmt = snd_soc_of_parse_daifmt(node, "simple-audio-card,") & |
fa558c28 KM |
151 | (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK); |
152 | ||
9d681f5b XL |
153 | /* off-codec widgets */ |
154 | if (of_property_read_bool(node, "simple-audio-card,widgets")) { | |
155 | ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card, | |
156 | "simple-audio-card,widgets"); | |
157 | if (ret) | |
158 | return ret; | |
159 | } | |
160 | ||
d4c22094 | 161 | /* DAPM routes */ |
8c0b8230 | 162 | if (of_property_read_bool(node, "simple-audio-card,routing")) { |
b367a325 | 163 | ret = snd_soc_of_parse_audio_routing(&priv->snd_card, |
8c0b8230 | 164 | "simple-audio-card,routing"); |
f87a3e82 XL |
165 | if (ret) |
166 | return ret; | |
167 | } | |
d4c22094 | 168 | |
fa558c28 KM |
169 | /* CPU sub-node */ |
170 | ret = -EINVAL; | |
171 | np = of_get_child_by_name(node, "simple-audio-card,cpu"); | |
172 | if (np) | |
30d0341e | 173 | ret = asoc_simple_card_sub_parse_of(np, priv->daifmt, |
b367a325 | 174 | &priv->cpu_dai, |
52008472 JFM |
175 | &dai_link->cpu_of_node, |
176 | &dai_link->cpu_dai_name); | |
fa558c28 KM |
177 | if (ret < 0) |
178 | return ret; | |
179 | ||
180 | /* CODEC sub-node */ | |
181 | ret = -EINVAL; | |
182 | np = of_get_child_by_name(node, "simple-audio-card,codec"); | |
183 | if (np) | |
30d0341e | 184 | ret = asoc_simple_card_sub_parse_of(np, priv->daifmt, |
b367a325 | 185 | &priv->codec_dai, |
52008472 JFM |
186 | &dai_link->codec_of_node, |
187 | &dai_link->codec_dai_name); | |
fa558c28 KM |
188 | if (ret < 0) |
189 | return ret; | |
190 | ||
52008472 | 191 | if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) |
dd41e0c4 XL |
192 | return -EINVAL; |
193 | ||
fa558c28 KM |
194 | /* card name is created from CPU/CODEC dai name */ |
195 | name = devm_kzalloc(dev, | |
52008472 JFM |
196 | strlen(dai_link->cpu_dai_name) + |
197 | strlen(dai_link->codec_dai_name) + 2, | |
fa558c28 | 198 | GFP_KERNEL); |
52008472 JFM |
199 | sprintf(name, "%s-%s", dai_link->cpu_dai_name, |
200 | dai_link->codec_dai_name); | |
2772555b XL |
201 | if (!priv->snd_card.name) |
202 | priv->snd_card.name = name; | |
5ca8ba41 | 203 | dai_link->name = dai_link->stream_name = name; |
fa558c28 KM |
204 | |
205 | /* simple-card assumes platform == cpu */ | |
5ca8ba41 | 206 | dai_link->platform_of_node = dai_link->cpu_of_node; |
fa558c28 | 207 | |
2bee9914 | 208 | dev_dbg(dev, "card-name : %s\n", name); |
b367a325 | 209 | dev_dbg(dev, "platform : %04x\n", priv->daifmt); |
fa558c28 | 210 | dev_dbg(dev, "cpu : %s / %04x / %d\n", |
52008472 | 211 | dai_link->cpu_dai_name, |
b367a325 JFM |
212 | priv->cpu_dai.fmt, |
213 | priv->cpu_dai.sysclk); | |
fa558c28 | 214 | dev_dbg(dev, "codec : %s / %04x / %d\n", |
52008472 | 215 | dai_link->codec_dai_name, |
b367a325 JFM |
216 | priv->codec_dai.fmt, |
217 | priv->codec_dai.sysclk); | |
fa558c28 KM |
218 | |
219 | return 0; | |
220 | } | |
221 | ||
f2390880 KM |
222 | static int asoc_simple_card_probe(struct platform_device *pdev) |
223 | { | |
45fce594 | 224 | struct simple_card_data *priv; |
5ca8ba41 | 225 | struct snd_soc_dai_link *dai_link; |
fa558c28 | 226 | struct device_node *np = pdev->dev.of_node; |
f89983ef | 227 | struct device *dev = &pdev->dev; |
ca919fe4 | 228 | int ret; |
f2390880 | 229 | |
ca65b492 JFM |
230 | priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); |
231 | if (!priv) | |
ca919fe4 XL |
232 | return -ENOMEM; |
233 | ||
201a0eac JFM |
234 | /* |
235 | * init snd_soc_card | |
236 | */ | |
ca65b492 JFM |
237 | priv->snd_card.owner = THIS_MODULE; |
238 | priv->snd_card.dev = dev; | |
239 | dai_link = &priv->snd_link; | |
240 | priv->snd_card.dai_link = dai_link; | |
241 | priv->snd_card.num_links = 1; | |
201a0eac | 242 | |
fa558c28 | 243 | if (np && of_device_is_available(np)) { |
ca919fe4 | 244 | |
ca65b492 | 245 | ret = asoc_simple_card_parse_of(np, priv, dev); |
ca919fe4 XL |
246 | if (ret < 0) { |
247 | if (ret != -EPROBE_DEFER) | |
248 | dev_err(dev, "parse error %d\n", ret); | |
249 | return ret; | |
fa558c28 KM |
250 | } |
251 | } else { | |
ca65b492 JFM |
252 | struct asoc_simple_card_info *cinfo; |
253 | ||
254 | cinfo = dev->platform_data; | |
255 | if (!cinfo) { | |
34787d0a XL |
256 | dev_err(dev, "no info for asoc-simple-card\n"); |
257 | return -EINVAL; | |
258 | } | |
fa558c28 | 259 | |
7722f830 JFM |
260 | if (!cinfo->name || |
261 | !cinfo->card || | |
262 | !cinfo->codec_dai.name || | |
263 | !cinfo->codec || | |
264 | !cinfo->platform || | |
265 | !cinfo->cpu_dai.name) { | |
266 | dev_err(dev, "insufficient asoc_simple_card_info settings\n"); | |
267 | return -EINVAL; | |
268 | } | |
2bee9914 | 269 | |
ca65b492 | 270 | priv->snd_card.name = cinfo->card; |
5ca8ba41 JFM |
271 | dai_link->name = cinfo->name; |
272 | dai_link->stream_name = cinfo->name; | |
273 | dai_link->platform_name = cinfo->platform; | |
274 | dai_link->codec_name = cinfo->codec; | |
52008472 JFM |
275 | dai_link->cpu_dai_name = cinfo->cpu_dai.name; |
276 | dai_link->codec_dai_name = cinfo->codec_dai.name; | |
ca65b492 JFM |
277 | memcpy(&priv->cpu_dai, &cinfo->cpu_dai, |
278 | sizeof(priv->cpu_dai)); | |
279 | memcpy(&priv->codec_dai, &cinfo->codec_dai, | |
280 | sizeof(priv->codec_dai)); | |
f2390880 KM |
281 | } |
282 | ||
283 | /* | |
284 | * init snd_soc_dai_link | |
285 | */ | |
5ca8ba41 | 286 | dai_link->init = asoc_simple_card_dai_init; |
f2390880 | 287 | |
ca65b492 | 288 | snd_soc_card_set_drvdata(&priv->snd_card, priv); |
f2390880 | 289 | |
ca65b492 | 290 | return devm_snd_soc_register_card(&pdev->dev, &priv->snd_card); |
f2390880 KM |
291 | } |
292 | ||
fa558c28 KM |
293 | static const struct of_device_id asoc_simple_of_match[] = { |
294 | { .compatible = "simple-audio-card", }, | |
295 | {}, | |
296 | }; | |
297 | MODULE_DEVICE_TABLE(of, asoc_simple_of_match); | |
298 | ||
f2390880 KM |
299 | static struct platform_driver asoc_simple_card = { |
300 | .driver = { | |
301 | .name = "asoc-simple-card", | |
c445be35 | 302 | .owner = THIS_MODULE, |
fa558c28 | 303 | .of_match_table = asoc_simple_of_match, |
f2390880 KM |
304 | }, |
305 | .probe = asoc_simple_card_probe, | |
f2390880 KM |
306 | }; |
307 | ||
308 | module_platform_driver(asoc_simple_card); | |
309 | ||
c445be35 | 310 | MODULE_ALIAS("platform:asoc-simple-card"); |
f2390880 KM |
311 | MODULE_LICENSE("GPL"); |
312 | MODULE_DESCRIPTION("ASoC Simple Sound Card"); | |
313 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |