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13#include <linux/clk.h>
14#include <linux/device.h>
15#include <linux/module.h>
16#include <linux/of.h>
17#include <linux/of_device.h>
18#include <linux/platform_device.h>
19#include <linux/string.h>
20#include <sound/jack.h>
21#include <sound/soc.h>
22#include <sound/soc-dai.h>
23#include <sound/simple_card_utils.h>
24
25struct simple_card_data {
26 struct snd_soc_card snd_card;
27 struct snd_soc_codec_conf codec_conf;
28 struct asoc_simple_dai *dai_props;
29 struct snd_soc_dai_link *dai_link;
30 struct asoc_simple_card_data adata;
31};
32
33#define simple_priv_to_card(priv) (&(priv)->snd_card)
34#define simple_priv_to_props(priv, i) ((priv)->dai_props + (i))
35#define simple_priv_to_dev(priv) (simple_priv_to_card(priv)->dev)
36#define simple_priv_to_link(priv, i) (simple_priv_to_card(priv)->dai_link + (i))
37
38#define DAI "sound-dai"
39#define CELL "#sound-dai-cells"
40#define PREFIX "simple-audio-card,"
41
42static int asoc_simple_card_startup(struct snd_pcm_substream *substream)
43{
44 struct snd_soc_pcm_runtime *rtd = substream->private_data;
45 struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
46 struct asoc_simple_dai *dai_props =
47 simple_priv_to_props(priv, rtd->num);
48
49 return asoc_simple_card_clk_enable(dai_props);
50}
51
52static void asoc_simple_card_shutdown(struct snd_pcm_substream *substream)
53{
54 struct snd_soc_pcm_runtime *rtd = substream->private_data;
55 struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
56 struct asoc_simple_dai *dai_props =
57 simple_priv_to_props(priv, rtd->num);
58
59 asoc_simple_card_clk_disable(dai_props);
60}
61
62static const struct snd_soc_ops asoc_simple_card_ops = {
63 .startup = asoc_simple_card_startup,
64 .shutdown = asoc_simple_card_shutdown,
65};
66
67static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
68{
69 struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
70 struct snd_soc_dai *dai;
71 struct snd_soc_dai_link *dai_link;
72 struct asoc_simple_dai *dai_props;
73 int num = rtd->num;
74
75 dai_link = simple_priv_to_link(priv, num);
76 dai_props = simple_priv_to_props(priv, num);
77 dai = dai_link->dynamic ?
78 rtd->cpu_dai :
79 rtd->codec_dai;
80
81 return asoc_simple_card_init_dai(dai, dai_props);
82}
83
84static int asoc_simple_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
85 struct snd_pcm_hw_params *params)
86{
87 struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
88
89 asoc_simple_card_convert_fixup(&priv->adata, params);
90
91 return 0;
92}
93
94static int asoc_simple_card_dai_link_of(struct device_node *np,
95 struct simple_card_data *priv,
96 unsigned int daifmt,
97 int idx, bool is_fe)
98{
99 struct device *dev = simple_priv_to_dev(priv);
100 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
101 struct asoc_simple_dai *dai_props = simple_priv_to_props(priv, idx);
102 struct snd_soc_card *card = simple_priv_to_card(priv);
103 int ret;
104
105 if (is_fe) {
106 int is_single_links = 0;
107
108
109 dai_link->codec_of_node = NULL;
110 dai_link->codec_dai_name = "snd-soc-dummy-dai";
111 dai_link->codec_name = "snd-soc-dummy";
112
113
114 dai_link->dynamic = 1;
115 dai_link->dpcm_merged_format = 1;
116
117 ret = asoc_simple_card_parse_cpu(np, dai_link, DAI, CELL,
118 &is_single_links);
119 if (ret)
120 return ret;
121
122 ret = asoc_simple_card_parse_clk_cpu(dev, np, dai_link, dai_props);
123 if (ret < 0)
124 return ret;
125
126 ret = asoc_simple_card_set_dailink_name(dev, dai_link,
127 "fe.%s",
128 dai_link->cpu_dai_name);
129 if (ret < 0)
130 return ret;
131
132 asoc_simple_card_canonicalize_cpu(dai_link, is_single_links);
133 } else {
134
135 dai_link->cpu_of_node = NULL;
136 dai_link->cpu_dai_name = "snd-soc-dummy-dai";
137 dai_link->cpu_name = "snd-soc-dummy";
138
139
140 dai_link->no_pcm = 1;
141 dai_link->be_hw_params_fixup = asoc_simple_card_be_hw_params_fixup;
142
143 ret = asoc_simple_card_parse_codec(np, dai_link, DAI, CELL);
144 if (ret < 0)
145 return ret;
146
147 ret = asoc_simple_card_parse_clk_codec(dev, np, dai_link, dai_props);
148 if (ret < 0)
149 return ret;
150
151 ret = asoc_simple_card_set_dailink_name(dev, dai_link,
152 "be.%s",
153 dai_link->codec_dai_name);
154 if (ret < 0)
155 return ret;
156
157 snd_soc_of_parse_audio_prefix(card,
158 &priv->codec_conf,
159 dai_link->codec_of_node,
160 PREFIX "prefix");
161 }
162
163 ret = asoc_simple_card_of_parse_tdm(np, dai_props);
164 if (ret)
165 return ret;
166
167 ret = asoc_simple_card_canonicalize_dailink(dai_link);
168 if (ret < 0)
169 return ret;
170
171 dai_link->dai_fmt = daifmt;
172 dai_link->dpcm_playback = 1;
173 dai_link->dpcm_capture = 1;
174 dai_link->ops = &asoc_simple_card_ops;
175 dai_link->init = asoc_simple_card_dai_init;
176
177 return 0;
178}
179
180static int asoc_simple_card_parse_of(struct simple_card_data *priv)
181
182{
183 struct device *dev = simple_priv_to_dev(priv);
184 struct device_node *np;
185 struct snd_soc_card *card = simple_priv_to_card(priv);
186 struct device_node *node = dev->of_node;
187 unsigned int daifmt = 0;
188 bool is_fe;
189 int ret, i;
190
191 if (!node)
192 return -EINVAL;
193
194 ret = asoc_simple_card_of_parse_routing(card, PREFIX, 0);
195 if (ret < 0)
196 return ret;
197
198 asoc_simple_card_parse_convert(dev, PREFIX, &priv->adata);
199
200
201 np = of_get_child_by_name(node, PREFIX "codec");
202 if (!np)
203 return -ENODEV;
204
205 ret = asoc_simple_card_parse_daifmt(dev, node, np, PREFIX, &daifmt);
206 if (ret < 0)
207 return ret;
208
209 i = 0;
210 for_each_child_of_node(node, np) {
211 is_fe = false;
212 if (strcmp(np->name, PREFIX "cpu") == 0)
213 is_fe = true;
214
215 ret = asoc_simple_card_dai_link_of(np, priv, daifmt, i, is_fe);
216 if (ret < 0)
217 return ret;
218 i++;
219 }
220
221 ret = asoc_simple_card_parse_card_name(card, PREFIX);
222 if (ret < 0)
223 return ret;
224
225 return 0;
226}
227
228static int asoc_simple_card_probe(struct platform_device *pdev)
229{
230 struct simple_card_data *priv;
231 struct snd_soc_dai_link *dai_link;
232 struct asoc_simple_dai *dai_props;
233 struct snd_soc_card *card;
234 struct device *dev = &pdev->dev;
235 struct device_node *np = dev->of_node;
236 int num, ret;
237
238
239 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
240 if (!priv)
241 return -ENOMEM;
242
243 num = of_get_child_count(np);
244
245 dai_props = devm_kzalloc(dev, sizeof(*dai_props) * num, GFP_KERNEL);
246 dai_link = devm_kzalloc(dev, sizeof(*dai_link) * num, GFP_KERNEL);
247 if (!dai_props || !dai_link)
248 return -ENOMEM;
249
250 priv->dai_props = dai_props;
251 priv->dai_link = dai_link;
252
253
254 card = simple_priv_to_card(priv);
255 card->owner = THIS_MODULE;
256 card->dev = dev;
257 card->dai_link = priv->dai_link;
258 card->num_links = num;
259 card->codec_conf = &priv->codec_conf;
260 card->num_configs = 1;
261
262 ret = asoc_simple_card_parse_of(priv);
263 if (ret < 0) {
264 if (ret != -EPROBE_DEFER)
265 dev_err(dev, "parse error %d\n", ret);
266 goto err;
267 }
268
269 snd_soc_card_set_drvdata(card, priv);
270
271 ret = devm_snd_soc_register_card(dev, card);
272 if (ret < 0)
273 goto err;
274
275 return 0;
276err:
277 asoc_simple_card_clean_reference(card);
278
279 return ret;
280}
281
282static int asoc_simple_card_remove(struct platform_device *pdev)
283{
284 struct snd_soc_card *card = platform_get_drvdata(pdev);
285
286 return asoc_simple_card_clean_reference(card);
287}
288
289static const struct of_device_id asoc_simple_of_match[] = {
290 { .compatible = "renesas,rsrc-card", },
291 { .compatible = "simple-scu-audio-card", },
292 {},
293};
294MODULE_DEVICE_TABLE(of, asoc_simple_of_match);
295
296static struct platform_driver asoc_simple_card = {
297 .driver = {
298 .name = "simple-scu-audio-card",
299 .of_match_table = asoc_simple_of_match,
300 },
301 .probe = asoc_simple_card_probe,
302 .remove = asoc_simple_card_remove,
303};
304
305module_platform_driver(asoc_simple_card);
306
307MODULE_ALIAS("platform:asoc-simple-scu-card");
308MODULE_LICENSE("GPL v2");
309MODULE_DESCRIPTION("ASoC Simple SCU Sound Card");
310MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
311
