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415f1cb2 KM |
1 | /* |
2 | * Renesas Sampling Rate Convert Sound Card for DPCM | |
3 | * | |
4 | * Copyright (C) 2015 Renesas Solutions Corp. | |
5 | * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
6 | * | |
7 | * based on ${LINUX}/sound/soc/generic/simple-card.c | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
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 | ||
24 | struct rsrc_card_of_data { | |
25 | const char *prefix; | |
26 | const struct snd_soc_dapm_route *routes; | |
27 | int num_routes; | |
28 | }; | |
29 | ||
30 | static const struct snd_soc_dapm_route routes_ssi0_ak4642[] = { | |
31 | {"ak4642 Playback", NULL, "DAI0 Playback"}, | |
32 | {"DAI0 Capture", NULL, "ak4642 Capture"}, | |
33 | }; | |
34 | ||
35 | static const struct rsrc_card_of_data routes_of_ssi0_ak4642 = { | |
36 | .prefix = "ak4642", | |
37 | .routes = routes_ssi0_ak4642, | |
38 | .num_routes = ARRAY_SIZE(routes_ssi0_ak4642), | |
39 | }; | |
40 | ||
41 | static const struct of_device_id rsrc_card_of_match[] = { | |
42 | { .compatible = "renesas,rsrc-card,lager", .data = &routes_of_ssi0_ak4642 }, | |
43 | { .compatible = "renesas,rsrc-card,koelsch", .data = &routes_of_ssi0_ak4642 }, | |
b7419dd7 | 44 | { .compatible = "renesas,rsrc-card", }, |
415f1cb2 KM |
45 | {}, |
46 | }; | |
47 | MODULE_DEVICE_TABLE(of, rsrc_card_of_match); | |
48 | ||
04700027 | 49 | #define DAI_NAME_NUM 32 |
415f1cb2 | 50 | struct rsrc_card_dai { |
415f1cb2 | 51 | unsigned int sysclk; |
6dad9758 KM |
52 | unsigned int tx_slot_mask; |
53 | unsigned int rx_slot_mask; | |
54 | int slots; | |
55 | int slot_width; | |
415f1cb2 | 56 | struct clk *clk; |
04700027 | 57 | char dai_name[DAI_NAME_NUM]; |
415f1cb2 KM |
58 | }; |
59 | ||
415f1cb2 KM |
60 | #define IDX_CPU 0 |
61 | #define IDX_CODEC 1 | |
62 | struct rsrc_card_priv { | |
63 | struct snd_soc_card snd_card; | |
415f1cb2 | 64 | struct snd_soc_codec_conf codec_conf; |
04700027 | 65 | struct rsrc_card_dai *dai_props; |
3433bf07 KM |
66 | struct snd_soc_dai_link *dai_link; |
67 | int dai_num; | |
af7e2be9 | 68 | u32 convert_rate; |
f90432fc | 69 | u32 convert_channels; |
415f1cb2 KM |
70 | }; |
71 | ||
72 | #define rsrc_priv_to_dev(priv) ((priv)->snd_card.dev) | |
8bd616c4 KM |
73 | #define rsrc_priv_to_link(priv, i) ((priv)->snd_card.dai_link + (i)) |
74 | #define rsrc_priv_to_props(priv, i) ((priv)->dai_props + (i)) | |
415f1cb2 KM |
75 | |
76 | static int rsrc_card_startup(struct snd_pcm_substream *substream) | |
77 | { | |
78 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
79 | struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card); | |
04700027 | 80 | struct rsrc_card_dai *dai_props = |
1a497983 | 81 | rsrc_priv_to_props(priv, rtd->num); |
415f1cb2 | 82 | |
04700027 | 83 | return clk_prepare_enable(dai_props->clk); |
415f1cb2 KM |
84 | } |
85 | ||
86 | static void rsrc_card_shutdown(struct snd_pcm_substream *substream) | |
87 | { | |
88 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
89 | struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card); | |
04700027 | 90 | struct rsrc_card_dai *dai_props = |
1a497983 | 91 | rsrc_priv_to_props(priv, rtd->num); |
415f1cb2 | 92 | |
04700027 | 93 | clk_disable_unprepare(dai_props->clk); |
415f1cb2 KM |
94 | } |
95 | ||
96 | static struct snd_soc_ops rsrc_card_ops = { | |
97 | .startup = rsrc_card_startup, | |
98 | .shutdown = rsrc_card_shutdown, | |
99 | }; | |
100 | ||
04700027 | 101 | static int rsrc_card_dai_init(struct snd_soc_pcm_runtime *rtd) |
415f1cb2 | 102 | { |
04700027 KM |
103 | struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card); |
104 | struct snd_soc_dai *dai; | |
105 | struct snd_soc_dai_link *dai_link; | |
106 | struct rsrc_card_dai *dai_props; | |
1a497983 | 107 | int num = rtd->num; |
415f1cb2 KM |
108 | int ret; |
109 | ||
04700027 KM |
110 | dai_link = rsrc_priv_to_link(priv, num); |
111 | dai_props = rsrc_priv_to_props(priv, num); | |
112 | dai = dai_link->dynamic ? | |
113 | rtd->cpu_dai : | |
114 | rtd->codec_dai; | |
115 | ||
04700027 KM |
116 | if (dai_props->sysclk) { |
117 | ret = snd_soc_dai_set_sysclk(dai, 0, dai_props->sysclk, 0); | |
415f1cb2 | 118 | if (ret && ret != -ENOTSUPP) { |
415f1cb2 | 119 | dev_err(dai->dev, "set_sysclk error\n"); |
415f1cb2 KM |
120 | goto err; |
121 | } | |
122 | } | |
123 | ||
6dad9758 KM |
124 | if (dai_props->slots) { |
125 | ret = snd_soc_dai_set_tdm_slot(dai, | |
126 | dai_props->tx_slot_mask, | |
127 | dai_props->rx_slot_mask, | |
128 | dai_props->slots, | |
129 | dai_props->slot_width); | |
415f1cb2 | 130 | if (ret && ret != -ENOTSUPP) { |
6dad9758 | 131 | dev_err(dai->dev, "set_tdm_slot error\n"); |
415f1cb2 KM |
132 | goto err; |
133 | } | |
134 | } | |
135 | ||
136 | ret = 0; | |
137 | ||
138 | err: | |
139 | return ret; | |
140 | } | |
141 | ||
af7e2be9 KM |
142 | static int rsrc_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, |
143 | struct snd_pcm_hw_params *params) | |
144 | { | |
145 | struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card); | |
146 | struct snd_interval *rate = hw_param_interval(params, | |
147 | SNDRV_PCM_HW_PARAM_RATE); | |
f90432fc KM |
148 | struct snd_interval *channels = hw_param_interval(params, |
149 | SNDRV_PCM_HW_PARAM_CHANNELS); | |
af7e2be9 | 150 | |
f90432fc KM |
151 | if (priv->convert_rate) |
152 | rate->min = | |
153 | rate->max = priv->convert_rate; | |
af7e2be9 | 154 | |
f90432fc KM |
155 | if (priv->convert_channels) |
156 | channels->min = | |
157 | channels->max = priv->convert_channels; | |
af7e2be9 KM |
158 | |
159 | return 0; | |
160 | } | |
161 | ||
fe3bd184 | 162 | static int rsrc_card_parse_daifmt(struct device_node *node, |
af998f85 | 163 | struct device_node *codec, |
fe3bd184 | 164 | struct rsrc_card_priv *priv, |
af998f85 KM |
165 | struct snd_soc_dai_link *dai_link, |
166 | unsigned int *retfmt) | |
fe3bd184 KM |
167 | { |
168 | struct device_node *bitclkmaster = NULL; | |
169 | struct device_node *framemaster = NULL; | |
fe3bd184 KM |
170 | unsigned int daifmt; |
171 | ||
172 | daifmt = snd_soc_of_parse_daifmt(node, NULL, | |
173 | &bitclkmaster, &framemaster); | |
174 | daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK; | |
175 | ||
176 | if (!bitclkmaster && !framemaster) | |
177 | return -EINVAL; | |
178 | ||
179 | if (codec == bitclkmaster) | |
180 | daifmt |= (codec == framemaster) ? | |
181 | SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS; | |
182 | else | |
183 | daifmt |= (codec == framemaster) ? | |
184 | SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS; | |
185 | ||
fe3bd184 KM |
186 | of_node_put(bitclkmaster); |
187 | of_node_put(framemaster); | |
188 | ||
af998f85 KM |
189 | *retfmt = daifmt; |
190 | ||
fe3bd184 KM |
191 | return 0; |
192 | } | |
193 | ||
04700027 KM |
194 | static int rsrc_card_parse_links(struct device_node *np, |
195 | struct rsrc_card_priv *priv, | |
196 | int idx, bool is_fe) | |
415f1cb2 | 197 | { |
04700027 KM |
198 | struct snd_soc_dai_link *dai_link = rsrc_priv_to_link(priv, idx); |
199 | struct rsrc_card_dai *dai_props = rsrc_priv_to_props(priv, idx); | |
415f1cb2 | 200 | struct of_phandle_args args; |
415f1cb2 KM |
201 | int ret; |
202 | ||
415f1cb2 KM |
203 | /* |
204 | * Get node via "sound-dai = <&phandle port>" | |
205 | * it will be used as xxx_of_node on soc_bind_dai_link() | |
206 | */ | |
207 | ret = of_parse_phandle_with_args(np, "sound-dai", | |
208 | "#sound-dai-cells", 0, &args); | |
209 | if (ret) | |
210 | return ret; | |
211 | ||
6dad9758 KM |
212 | /* Parse TDM slot */ |
213 | ret = snd_soc_of_parse_tdm_slot(np, | |
214 | &dai_props->tx_slot_mask, | |
215 | &dai_props->rx_slot_mask, | |
216 | &dai_props->slots, | |
217 | &dai_props->slot_width); | |
218 | if (ret) | |
219 | return ret; | |
220 | ||
04700027 KM |
221 | if (is_fe) { |
222 | /* BE is dummy */ | |
223 | dai_link->codec_of_node = NULL; | |
224 | dai_link->codec_dai_name = "snd-soc-dummy-dai"; | |
225 | dai_link->codec_name = "snd-soc-dummy"; | |
226 | ||
227 | /* FE settings */ | |
228 | dai_link->dynamic = 1; | |
229 | dai_link->dpcm_merged_format = 1; | |
230 | dai_link->cpu_of_node = args.np; | |
575f1f92 KM |
231 | ret = snd_soc_of_get_dai_name(np, &dai_link->cpu_dai_name); |
232 | if (ret < 0) | |
233 | return ret; | |
04700027 KM |
234 | |
235 | /* set dai_name */ | |
236 | snprintf(dai_props->dai_name, DAI_NAME_NUM, "fe.%s", | |
237 | dai_link->cpu_dai_name); | |
238 | ||
239 | /* | |
240 | * In soc_bind_dai_link() will check cpu name after | |
241 | * of_node matching if dai_link has cpu_dai_name. | |
242 | * but, it will never match if name was created by | |
243 | * fmt_single_name() remove cpu_dai_name if cpu_args | |
244 | * was 0. See: | |
245 | * fmt_single_name() | |
246 | * fmt_multiple_name() | |
247 | */ | |
248 | if (!args.args_count) | |
249 | dai_link->cpu_dai_name = NULL; | |
250 | } else { | |
251 | struct device *dev = rsrc_priv_to_dev(priv); | |
252 | const struct rsrc_card_of_data *of_data; | |
415f1cb2 | 253 | |
6a16c176 | 254 | of_data = of_device_get_match_data(dev); |
415f1cb2 | 255 | |
04700027 KM |
256 | /* FE is dummy */ |
257 | dai_link->cpu_of_node = NULL; | |
258 | dai_link->cpu_dai_name = "snd-soc-dummy-dai"; | |
259 | dai_link->cpu_name = "snd-soc-dummy"; | |
415f1cb2 | 260 | |
04700027 KM |
261 | /* BE settings */ |
262 | dai_link->no_pcm = 1; | |
263 | dai_link->be_hw_params_fixup = rsrc_card_be_hw_params_fixup; | |
264 | dai_link->codec_of_node = args.np; | |
575f1f92 KM |
265 | ret = snd_soc_of_get_dai_name(np, &dai_link->codec_dai_name); |
266 | if (ret < 0) | |
267 | return ret; | |
04700027 KM |
268 | |
269 | /* additional name prefix */ | |
b7419dd7 KM |
270 | if (of_data) { |
271 | priv->codec_conf.of_node = dai_link->codec_of_node; | |
272 | priv->codec_conf.name_prefix = of_data->prefix; | |
273 | } else { | |
274 | snd_soc_of_parse_audio_prefix(&priv->snd_card, | |
275 | &priv->codec_conf, | |
276 | dai_link->codec_of_node, | |
277 | "audio-prefix"); | |
278 | } | |
04700027 KM |
279 | |
280 | /* set dai_name */ | |
281 | snprintf(dai_props->dai_name, DAI_NAME_NUM, "be.%s", | |
282 | dai_link->codec_dai_name); | |
415f1cb2 KM |
283 | } |
284 | ||
04700027 KM |
285 | /* Simple Card assumes platform == cpu */ |
286 | dai_link->platform_of_node = dai_link->cpu_of_node; | |
287 | dai_link->dpcm_playback = 1; | |
288 | dai_link->dpcm_capture = 1; | |
289 | dai_link->name = dai_props->dai_name; | |
290 | dai_link->stream_name = dai_props->dai_name; | |
291 | dai_link->ops = &rsrc_card_ops; | |
292 | dai_link->init = rsrc_card_dai_init; | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
297 | static int rsrc_card_parse_clk(struct device_node *np, | |
298 | struct rsrc_card_priv *priv, | |
299 | int idx, bool is_fe) | |
300 | { | |
301 | struct snd_soc_dai_link *dai_link = rsrc_priv_to_link(priv, idx); | |
302 | struct rsrc_card_dai *dai_props = rsrc_priv_to_props(priv, idx); | |
303 | struct clk *clk; | |
304 | struct device_node *of_np = is_fe ? dai_link->cpu_of_node : | |
305 | dai_link->codec_of_node; | |
306 | u32 val; | |
307 | ||
415f1cb2 KM |
308 | /* |
309 | * Parse dai->sysclk come from "clocks = <&xxx>" | |
310 | * (if system has common clock) | |
311 | * or "system-clock-frequency = <xxx>" | |
312 | * or device's module clock. | |
313 | */ | |
314 | if (of_property_read_bool(np, "clocks")) { | |
315 | clk = of_clk_get(np, 0); | |
061015f7 KM |
316 | if (IS_ERR(clk)) |
317 | return PTR_ERR(clk); | |
415f1cb2 | 318 | |
04700027 KM |
319 | dai_props->sysclk = clk_get_rate(clk); |
320 | dai_props->clk = clk; | |
415f1cb2 | 321 | } else if (!of_property_read_u32(np, "system-clock-frequency", &val)) { |
04700027 | 322 | dai_props->sysclk = val; |
415f1cb2 | 323 | } else { |
04700027 | 324 | clk = of_clk_get(of_np, 0); |
415f1cb2 | 325 | if (!IS_ERR(clk)) |
04700027 | 326 | dai_props->sysclk = clk_get_rate(clk); |
415f1cb2 KM |
327 | } |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
af998f85 KM |
332 | static int rsrc_card_dai_sub_link_of(struct device_node *node, |
333 | struct device_node *np, | |
334 | struct rsrc_card_priv *priv, | |
335 | int idx, bool is_fe) | |
415f1cb2 KM |
336 | { |
337 | struct device *dev = rsrc_priv_to_dev(priv); | |
ae638b72 | 338 | struct snd_soc_dai_link *dai_link = rsrc_priv_to_link(priv, idx); |
04700027 | 339 | struct rsrc_card_dai *dai_props = rsrc_priv_to_props(priv, idx); |
04700027 | 340 | int ret; |
415f1cb2 | 341 | |
04700027 | 342 | ret = rsrc_card_parse_links(np, priv, idx, is_fe); |
415f1cb2 | 343 | if (ret < 0) |
04700027 | 344 | return ret; |
415f1cb2 | 345 | |
04700027 KM |
346 | ret = rsrc_card_parse_clk(np, priv, idx, is_fe); |
347 | if (ret < 0) | |
348 | return ret; | |
415f1cb2 | 349 | |
04700027 KM |
350 | dev_dbg(dev, "\t%s / %04x / %d\n", |
351 | dai_props->dai_name, | |
ae638b72 | 352 | dai_link->dai_fmt, |
04700027 | 353 | dai_props->sysclk); |
415f1cb2 KM |
354 | |
355 | return ret; | |
356 | } | |
357 | ||
af998f85 KM |
358 | static int rsrc_card_dai_link_of(struct device_node *node, |
359 | struct rsrc_card_priv *priv) | |
360 | { | |
361 | struct snd_soc_dai_link *dai_link; | |
362 | struct device_node *np; | |
363 | unsigned int daifmt = 0; | |
364 | int ret, i; | |
365 | bool is_fe; | |
366 | ||
367 | /* find 1st codec */ | |
368 | i = 0; | |
369 | for_each_child_of_node(node, np) { | |
370 | dai_link = rsrc_priv_to_link(priv, i); | |
371 | ||
372 | if (strcmp(np->name, "codec") == 0) { | |
373 | ret = rsrc_card_parse_daifmt(node, np, priv, | |
374 | dai_link, &daifmt); | |
375 | if (ret < 0) | |
376 | return ret; | |
377 | break; | |
378 | } | |
379 | i++; | |
380 | } | |
381 | ||
382 | i = 0; | |
383 | for_each_child_of_node(node, np) { | |
384 | dai_link = rsrc_priv_to_link(priv, i); | |
385 | dai_link->dai_fmt = daifmt; | |
386 | ||
387 | is_fe = false; | |
388 | if (strcmp(np->name, "cpu") == 0) | |
389 | is_fe = true; | |
390 | ||
391 | ret = rsrc_card_dai_sub_link_of(node, np, priv, i, is_fe); | |
392 | if (ret < 0) | |
393 | return ret; | |
394 | i++; | |
395 | } | |
396 | ||
397 | return 0; | |
398 | } | |
399 | ||
415f1cb2 | 400 | static int rsrc_card_parse_of(struct device_node *node, |
3c7e64dd KM |
401 | struct rsrc_card_priv *priv, |
402 | struct device *dev) | |
415f1cb2 | 403 | { |
6a16c176 | 404 | const struct rsrc_card_of_data *of_data = of_device_get_match_data(dev); |
04700027 | 405 | struct rsrc_card_dai *props; |
3433bf07 | 406 | struct snd_soc_dai_link *links; |
415f1cb2 | 407 | int ret; |
af998f85 | 408 | int num; |
415f1cb2 KM |
409 | |
410 | if (!node) | |
411 | return -EINVAL; | |
412 | ||
3433bf07 KM |
413 | num = of_get_child_count(node); |
414 | props = devm_kzalloc(dev, sizeof(*props) * num, GFP_KERNEL); | |
415 | links = devm_kzalloc(dev, sizeof(*links) * num, GFP_KERNEL); | |
416 | if (!props || !links) | |
417 | return -ENOMEM; | |
418 | ||
419 | priv->dai_props = props; | |
420 | priv->dai_link = links; | |
421 | priv->dai_num = num; | |
422 | ||
3c7e64dd KM |
423 | /* Init snd_soc_card */ |
424 | priv->snd_card.owner = THIS_MODULE; | |
425 | priv->snd_card.dev = dev; | |
426 | priv->snd_card.dai_link = priv->dai_link; | |
3433bf07 | 427 | priv->snd_card.num_links = num; |
3c7e64dd KM |
428 | priv->snd_card.codec_conf = &priv->codec_conf; |
429 | priv->snd_card.num_configs = 1; | |
b7419dd7 KM |
430 | |
431 | if (of_data) { | |
432 | priv->snd_card.of_dapm_routes = of_data->routes; | |
433 | priv->snd_card.num_of_dapm_routes = of_data->num_routes; | |
434 | } else { | |
435 | snd_soc_of_parse_audio_routing(&priv->snd_card, | |
436 | "audio-routing"); | |
437 | } | |
415f1cb2 | 438 | |
04700027 KM |
439 | /* Parse the card name from DT */ |
440 | snd_soc_of_parse_card_name(&priv->snd_card, "card-name"); | |
441 | ||
af7e2be9 KM |
442 | /* sampling rate convert */ |
443 | of_property_read_u32(node, "convert-rate", &priv->convert_rate); | |
444 | ||
f90432fc KM |
445 | /* channels transfer */ |
446 | of_property_read_u32(node, "convert-channels", &priv->convert_channels); | |
447 | ||
448 | dev_dbg(dev, "New rsrc-audio-card: %s\n", | |
449 | priv->snd_card.name ? priv->snd_card.name : ""); | |
450 | dev_dbg(dev, "SRC : convert_rate %d\n", priv->convert_rate); | |
451 | dev_dbg(dev, "CTU : convert_channels %d\n", priv->convert_channels); | |
415f1cb2 | 452 | |
af998f85 KM |
453 | ret = rsrc_card_dai_link_of(node, priv); |
454 | if (ret < 0) | |
455 | return ret; | |
415f1cb2 KM |
456 | |
457 | if (!priv->snd_card.name) | |
458 | priv->snd_card.name = priv->snd_card.dai_link->name; | |
459 | ||
460 | return 0; | |
461 | } | |
462 | ||
463 | /* Decrease the reference count of the device nodes */ | |
464 | static int rsrc_card_unref(struct snd_soc_card *card) | |
465 | { | |
466 | struct snd_soc_dai_link *dai_link; | |
467 | int num_links; | |
468 | ||
469 | for (num_links = 0, dai_link = card->dai_link; | |
470 | num_links < card->num_links; | |
471 | num_links++, dai_link++) { | |
472 | of_node_put(dai_link->cpu_of_node); | |
473 | of_node_put(dai_link->codec_of_node); | |
474 | } | |
475 | return 0; | |
476 | } | |
477 | ||
478 | static int rsrc_card_probe(struct platform_device *pdev) | |
479 | { | |
480 | struct rsrc_card_priv *priv; | |
415f1cb2 KM |
481 | struct device_node *np = pdev->dev.of_node; |
482 | struct device *dev = &pdev->dev; | |
483 | int ret; | |
484 | ||
485 | /* Allocate the private data */ | |
486 | priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); | |
487 | if (!priv) | |
488 | return -ENOMEM; | |
489 | ||
3c7e64dd | 490 | ret = rsrc_card_parse_of(np, priv, dev); |
415f1cb2 KM |
491 | if (ret < 0) { |
492 | if (ret != -EPROBE_DEFER) | |
493 | dev_err(dev, "parse error %d\n", ret); | |
494 | goto err; | |
495 | } | |
496 | ||
497 | snd_soc_card_set_drvdata(&priv->snd_card, priv); | |
498 | ||
499 | ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card); | |
500 | if (ret >= 0) | |
501 | return ret; | |
502 | err: | |
503 | rsrc_card_unref(&priv->snd_card); | |
504 | ||
505 | return ret; | |
506 | } | |
507 | ||
508 | static int rsrc_card_remove(struct platform_device *pdev) | |
509 | { | |
510 | struct snd_soc_card *card = platform_get_drvdata(pdev); | |
511 | ||
512 | return rsrc_card_unref(card); | |
513 | } | |
514 | ||
515 | static struct platform_driver rsrc_card = { | |
516 | .driver = { | |
517 | .name = "renesas-src-audio-card", | |
518 | .of_match_table = rsrc_card_of_match, | |
519 | }, | |
520 | .probe = rsrc_card_probe, | |
521 | .remove = rsrc_card_remove, | |
522 | }; | |
523 | ||
524 | module_platform_driver(rsrc_card); | |
525 | ||
526 | MODULE_ALIAS("platform:renesas-src-audio-card"); | |
527 | MODULE_LICENSE("GPL"); | |
528 | MODULE_DESCRIPTION("Renesas Sampling Rate Convert Sound Card"); | |
529 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |