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