2 * Renesas R-Car SRU/SCU/SSIU/SSI support
4 * Copyright (C) 2013 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
8 * Kuninori Morimoto <morimoto.kuninori@renesas.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
16 * Renesas R-Car sound device structure
20 * SRU : Sound Routing Unit
21 * - SRC : Sampling Rate Converter
23 * - CTU : Channel Count Conversion Unit
25 * - DVC : Digital Volume and Mute Function
26 * - SSI : Serial Sound Interface
30 * SCU : Sampling Rate Converter Unit
31 * - SRC : Sampling Rate Converter
33 * - CTU : Channel Count Conversion Unit
35 * - DVC : Digital Volume and Mute Function
36 * SSIU : Serial Sound Interface Unit
37 * - SSI : Serial Sound Interface
45 * | ** this depends on Gen1/Gen2
49 * | ** these depend on data path
50 * | ** gen and platform data control it
54 * | +- playback -> [mod] -> [mod] -> [mod] -> ...
57 * | +- capture -> [mod] -> [mod] -> [mod] -> ...
61 * | +- playback -> [mod] -> [mod] -> [mod] -> ...
64 * | +- capture -> [mod] -> [mod] -> [mod] -> ...
67 * | ** these control ssi
76 * | ** these control src
86 * for_each_rsnd_dai(xx, priv, xx)
87 * rdai[0] => rdai[1] => rdai[2] => ...
89 * for_each_rsnd_mod(xx, rdai, xx)
90 * [mod] => [mod] => [mod] => ...
92 * rsnd_dai_call(xxx, fn )
93 * [mod]->fn() -> [mod]->fn() -> [mod]->fn()...
96 #include <linux/pm_runtime.h>
97 #include <linux/shdma-base.h>
100 #define RSND_RATES SNDRV_PCM_RATE_8000_96000
101 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
103 static struct rsnd_of_data rsnd_of_data_gen1 = {
107 static struct rsnd_of_data rsnd_of_data_gen2 = {
111 static struct of_device_id rsnd_of_match[] = {
112 { .compatible = "renesas,rcar_sound-gen1", .data = &rsnd_of_data_gen1 },
113 { .compatible = "renesas,rcar_sound-gen2", .data = &rsnd_of_data_gen2 },
116 MODULE_DEVICE_TABLE(of, rsnd_of_match);
119 * rsnd_platform functions
121 #define rsnd_platform_call(priv, dai, func, param...) \
122 (!(priv->info->func) ? 0 : \
123 priv->info->func(param))
125 #define rsnd_is_enable_path(io, name) \
126 ((io)->info ? (io)->info->name : NULL)
127 #define rsnd_info_id(priv, io, name) \
128 ((io)->info->name - priv->info->name##_info)
133 char *rsnd_mod_name(struct rsnd_mod *mod)
135 if (!mod || !mod->ops)
138 return mod->ops->name;
141 void rsnd_mod_init(struct rsnd_priv *priv,
142 struct rsnd_mod *mod,
143 struct rsnd_mod_ops *ops,
144 enum rsnd_mod_type type,
156 static void __rsnd_dma_start(struct rsnd_dma *dma);
157 static void rsnd_dma_continue(struct rsnd_dma *dma)
159 /* push next A or B plane */
160 dma->submit_loop = 1;
161 schedule_work(&dma->work);
164 void rsnd_dma_start(struct rsnd_dma *dma)
166 /* push both A and B plane*/
168 dma->submit_loop = 2;
169 __rsnd_dma_start(dma);
172 void rsnd_dma_stop(struct rsnd_dma *dma)
174 dma->submit_loop = 0;
175 cancel_work_sync(&dma->work);
176 dmaengine_terminate_all(dma->chan);
179 static void rsnd_dma_complete(void *data)
181 struct rsnd_dma *dma = (struct rsnd_dma *)data;
182 struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
183 struct rsnd_priv *priv = rsnd_mod_to_priv(rsnd_dma_to_mod(dma));
184 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
187 rsnd_lock(priv, flags);
190 * Renesas sound Gen1 needs 1 DMAC,
192 * In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri.
193 * But, Audio-DMAC-peri-peri doesn't have interrupt,
194 * and this driver is assuming that here.
196 * If Audio-DMAC-peri-peri has interrpt,
197 * rsnd_dai_pointer_update() will be called twice,
198 * ant it will breaks io->byte_pos
200 if (dma->submit_loop)
201 rsnd_dma_continue(dma);
203 rsnd_unlock(priv, flags);
205 rsnd_dai_pointer_update(io, io->byte_per_period);
208 static void __rsnd_dma_start(struct rsnd_dma *dma)
210 struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
211 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
212 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
213 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
214 struct device *dev = rsnd_priv_to_dev(priv);
215 struct dma_async_tx_descriptor *desc;
217 size_t len = io->byte_per_period;
220 for (i = 0; i < dma->submit_loop; i++) {
222 buf = runtime->dma_addr +
223 rsnd_dai_pointer_offset(io, dma->offset + len);
226 desc = dmaengine_prep_slave_single(
227 dma->chan, buf, len, dma->dir,
228 DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
230 dev_err(dev, "dmaengine_prep_slave_sg() fail\n");
234 desc->callback = rsnd_dma_complete;
235 desc->callback_param = dma;
237 if (dmaengine_submit(desc) < 0) {
238 dev_err(dev, "dmaengine_submit() fail\n");
242 dma_async_issue_pending(dma->chan);
246 static void rsnd_dma_do_work(struct work_struct *work)
248 struct rsnd_dma *dma = container_of(work, struct rsnd_dma, work);
250 __rsnd_dma_start(dma);
253 int rsnd_dma_available(struct rsnd_dma *dma)
258 #define DMA_NAME_SIZE 16
259 #define MOD_MAX 4 /* MEM/SSI/SRC/DVC */
260 static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod)
263 return snprintf(dma_name, DMA_NAME_SIZE / 2, "%s%d",
264 rsnd_mod_name(mod), rsnd_mod_id(mod));
266 return snprintf(dma_name, DMA_NAME_SIZE / 2, "mem");
270 static void rsnd_dma_of_name(struct rsnd_dma *dma,
271 int is_play, char *dma_name)
273 struct rsnd_mod *this = rsnd_dma_to_mod(dma);
274 struct rsnd_dai_stream *io = rsnd_mod_to_io(this);
275 struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
276 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
277 struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
278 struct rsnd_mod *mod[MOD_MAX];
279 struct rsnd_mod *src_mod, *dst_mod;
283 for (i = 0; i < MOD_MAX; i++)
293 * mem -> SRC -> DVC -> SSI
295 mod[0] = NULL; /* for "mem" */
297 for (i = 1; i < MOD_MAX; i++) {
314 src_mod = mod[index - 1];
315 dst_mod = mod[index];
317 src_mod = mod[index];
318 dst_mod = mod[index + 1];
322 index = _rsnd_dma_of_name(dma_name + index, src_mod);
323 *(dma_name + index++) = '_';
324 index = _rsnd_dma_of_name(dma_name + index, dst_mod);
327 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma,
330 struct device *dev = rsnd_priv_to_dev(priv);
331 struct dma_slave_config cfg;
332 char dma_name[DMA_NAME_SIZE];
337 dev_err(dev, "it already has dma channel\n");
342 dma_cap_set(DMA_SLAVE, mask);
345 rsnd_dma_of_name(dma, is_play, dma_name);
347 snprintf(dma_name, DMA_NAME_SIZE,
348 is_play ? "tx" : "rx");
350 dev_dbg(dev, "dma name : %s\n", dma_name);
352 dma->chan = dma_request_slave_channel_compat(mask, shdma_chan_filter,
356 dev_err(dev, "can't get dma channel\n");
360 rsnd_gen_dma_addr(priv, dma, &cfg, is_play, id);
362 ret = dmaengine_slave_config(dma->chan, &cfg);
364 goto rsnd_dma_init_err;
366 dma->dir = is_play ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
367 INIT_WORK(&dma->work, rsnd_dma_do_work);
372 rsnd_dma_quit(priv, dma);
377 void rsnd_dma_quit(struct rsnd_priv *priv,
378 struct rsnd_dma *dma)
381 dma_release_channel(dma->chan);
389 u32 rsnd_get_adinr(struct rsnd_mod *mod)
391 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
392 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
393 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
394 struct device *dev = rsnd_priv_to_dev(priv);
395 u32 adinr = runtime->channels;
397 switch (runtime->sample_bits) {
405 dev_warn(dev, "not supported sample bits\n");
415 #define __rsnd_mod_call(mod, func, rdai...) \
417 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \
418 struct device *dev = rsnd_priv_to_dev(priv); \
419 dev_dbg(dev, "%s [%d] %s\n", \
420 rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \
421 (mod)->ops->func(mod, rdai); \
424 #define rsnd_mod_call(mod, func, rdai...) \
425 (!(mod) ? -ENODEV : \
426 !((mod)->ops->func) ? 0 : \
427 __rsnd_mod_call(mod, func, rdai))
429 #define rsnd_dai_call(fn, io, rdai...) \
431 struct rsnd_mod *mod; \
433 for (i = 0; i < RSND_MOD_MAX; i++) { \
434 mod = (io)->mod[i]; \
437 ret = rsnd_mod_call(mod, fn, rdai); \
444 static int rsnd_dai_connect(struct rsnd_mod *mod,
445 struct rsnd_dai_stream *io)
450 if (io->mod[mod->type]) {
451 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
452 struct device *dev = rsnd_priv_to_dev(priv);
454 dev_err(dev, "%s%d is not empty\n",
460 io->mod[mod->type] = mod;
466 int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai)
468 int id = rdai - priv->rdai;
470 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
476 struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id)
478 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
481 return priv->rdai + id;
484 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
486 struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
488 return rsnd_dai_get(priv, dai->id);
491 int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io)
493 return &rdai->playback == io;
497 * rsnd_soc_dai functions
499 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
501 struct snd_pcm_substream *substream = io->substream;
502 struct snd_pcm_runtime *runtime = substream->runtime;
503 int pos = io->byte_pos + additional;
505 pos %= (runtime->periods * io->byte_per_period);
510 void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
512 io->byte_pos += byte;
514 if (io->byte_pos >= io->next_period_byte) {
515 struct snd_pcm_substream *substream = io->substream;
516 struct snd_pcm_runtime *runtime = substream->runtime;
519 io->next_period_byte += io->byte_per_period;
521 if (io->period_pos >= runtime->periods) {
524 io->next_period_byte = io->byte_per_period;
527 snd_pcm_period_elapsed(substream);
531 static int rsnd_dai_stream_init(struct rsnd_dai_stream *io,
532 struct snd_pcm_substream *substream)
534 struct snd_pcm_runtime *runtime = substream->runtime;
536 io->substream = substream;
539 io->byte_per_period = runtime->period_size *
541 samples_to_bytes(runtime, 1);
542 io->next_period_byte = io->byte_per_period;
548 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
550 struct snd_soc_pcm_runtime *rtd = substream->private_data;
556 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
557 struct snd_pcm_substream *substream)
559 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
560 return &rdai->playback;
562 return &rdai->capture;
565 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
566 struct snd_soc_dai *dai)
568 struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
569 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
570 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
571 int ssi_id = rsnd_mod_id(rsnd_io_to_mod_ssi(io));
575 rsnd_lock(priv, flags);
578 case SNDRV_PCM_TRIGGER_START:
579 ret = rsnd_dai_stream_init(io, substream);
581 goto dai_trigger_end;
583 ret = rsnd_platform_call(priv, dai, start, ssi_id);
585 goto dai_trigger_end;
587 ret = rsnd_dai_call(init, io, rdai);
589 goto dai_trigger_end;
591 ret = rsnd_dai_call(start, io, rdai);
593 goto dai_trigger_end;
595 case SNDRV_PCM_TRIGGER_STOP:
596 ret = rsnd_dai_call(stop, io, rdai);
598 goto dai_trigger_end;
600 ret = rsnd_dai_call(quit, io, rdai);
602 goto dai_trigger_end;
604 ret = rsnd_platform_call(priv, dai, stop, ssi_id);
606 goto dai_trigger_end;
613 rsnd_unlock(priv, flags);
618 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
620 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
622 /* set master/slave audio interface */
623 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
624 case SND_SOC_DAIFMT_CBM_CFM:
625 rdai->clk_master = 0;
627 case SND_SOC_DAIFMT_CBS_CFS:
628 rdai->clk_master = 1; /* codec is slave, cpu is master */
634 /* set clock inversion */
635 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
636 case SND_SOC_DAIFMT_NB_IF:
637 rdai->bit_clk_inv = 0;
638 rdai->frm_clk_inv = 1;
640 case SND_SOC_DAIFMT_IB_NF:
641 rdai->bit_clk_inv = 1;
642 rdai->frm_clk_inv = 0;
644 case SND_SOC_DAIFMT_IB_IF:
645 rdai->bit_clk_inv = 1;
646 rdai->frm_clk_inv = 1;
648 case SND_SOC_DAIFMT_NB_NF:
650 rdai->bit_clk_inv = 0;
651 rdai->frm_clk_inv = 0;
656 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
657 case SND_SOC_DAIFMT_I2S:
659 rdai->data_alignment = 0;
661 case SND_SOC_DAIFMT_LEFT_J:
663 rdai->data_alignment = 0;
665 case SND_SOC_DAIFMT_RIGHT_J:
667 rdai->data_alignment = 1;
674 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
675 .trigger = rsnd_soc_dai_trigger,
676 .set_fmt = rsnd_soc_dai_set_fmt,
679 #define rsnd_path_parse(priv, io, type) \
681 struct rsnd_mod *mod; \
685 if (rsnd_is_enable_path(io, type)) { \
686 id = rsnd_info_id(priv, io, type); \
688 mod = rsnd_##type##_mod_get(priv, id); \
689 ret = rsnd_dai_connect(mod, io); \
695 static int rsnd_path_init(struct rsnd_priv *priv,
696 struct rsnd_dai *rdai,
697 struct rsnd_dai_stream *io)
702 * Gen1 is created by SRU/SSI, and this SRU is base module of
703 * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU)
706 * Gen1 SRU = Gen2 SCU + SSIU + etc
708 * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
713 ret = rsnd_path_parse(priv, io, src);
718 ret = rsnd_path_parse(priv, io, ssi);
723 ret = rsnd_path_parse(priv, io, dvc);
730 static void rsnd_of_parse_dai(struct platform_device *pdev,
731 const struct rsnd_of_data *of_data,
732 struct rsnd_priv *priv)
734 struct device_node *dai_node, *dai_np;
735 struct device_node *ssi_node, *ssi_np;
736 struct device_node *src_node, *src_np;
737 struct device_node *playback, *capture;
738 struct rsnd_dai_platform_info *dai_info;
739 struct rcar_snd_info *info = rsnd_priv_to_info(priv);
740 struct device *dev = &pdev->dev;
742 int dai_i, ssi_i, src_i;
747 dai_node = of_get_child_by_name(dev->of_node, "rcar_sound,dai");
751 nr = of_get_child_count(dai_node);
755 dai_info = devm_kzalloc(dev,
756 sizeof(struct rsnd_dai_platform_info) * nr,
759 dev_err(dev, "dai info allocation error\n");
763 info->dai_info_nr = nr;
764 info->dai_info = dai_info;
766 ssi_node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi");
767 src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src");
769 #define mod_parse(name) \
771 struct rsnd_##name##_platform_info *name##_info; \
774 for_each_child_of_node(name##_node, name##_np) { \
775 name##_info = info->name##_info + name##_i; \
777 if (name##_np == playback) \
778 dai_info->playback.name = name##_info; \
779 if (name##_np == capture) \
780 dai_info->capture.name = name##_info; \
790 for_each_child_of_node(dai_node, dai_np) {
791 dai_info = info->dai_info + dai_i;
795 playback = of_parse_phandle(dai_np, "playback", i);
796 capture = of_parse_phandle(dai_np, "capture", i);
798 if (!playback && !capture)
805 of_node_put(playback);
807 of_node_put(capture);
814 static int rsnd_dai_probe(struct platform_device *pdev,
815 const struct rsnd_of_data *of_data,
816 struct rsnd_priv *priv)
818 struct snd_soc_dai_driver *drv;
819 struct rcar_snd_info *info = rsnd_priv_to_info(priv);
820 struct rsnd_dai *rdai;
821 struct rsnd_ssi_platform_info *pmod, *cmod;
822 struct device *dev = rsnd_priv_to_dev(priv);
826 rsnd_of_parse_dai(pdev, of_data, priv);
828 dai_nr = info->dai_info_nr;
830 dev_err(dev, "no dai\n");
834 drv = devm_kzalloc(dev, sizeof(*drv) * dai_nr, GFP_KERNEL);
835 rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL);
837 dev_err(dev, "dai allocate failed\n");
841 priv->rdai_nr = dai_nr;
845 for (i = 0; i < dai_nr; i++) {
846 rdai[i].info = &info->dai_info[i];
848 pmod = rdai[i].info->playback.ssi;
849 cmod = rdai[i].info->capture.ssi;
854 snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i);
857 * init snd_soc_dai_driver
859 drv[i].name = rdai[i].name;
860 drv[i].ops = &rsnd_soc_dai_ops;
862 drv[i].playback.rates = RSND_RATES;
863 drv[i].playback.formats = RSND_FMTS;
864 drv[i].playback.channels_min = 2;
865 drv[i].playback.channels_max = 2;
867 rdai[i].playback.info = &info->dai_info[i].playback;
868 rsnd_path_init(priv, &rdai[i], &rdai[i].playback);
871 drv[i].capture.rates = RSND_RATES;
872 drv[i].capture.formats = RSND_FMTS;
873 drv[i].capture.channels_min = 2;
874 drv[i].capture.channels_max = 2;
876 rdai[i].capture.info = &info->dai_info[i].capture;
877 rsnd_path_init(priv, &rdai[i], &rdai[i].capture);
880 dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name,
881 pmod ? "play" : " -- ",
882 cmod ? "capture" : " -- ");
891 static struct snd_pcm_hardware rsnd_pcm_hardware = {
892 .info = SNDRV_PCM_INFO_INTERLEAVED |
893 SNDRV_PCM_INFO_MMAP |
894 SNDRV_PCM_INFO_MMAP_VALID |
895 SNDRV_PCM_INFO_PAUSE,
896 .buffer_bytes_max = 64 * 1024,
897 .period_bytes_min = 32,
898 .period_bytes_max = 8192,
904 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
906 struct snd_pcm_runtime *runtime = substream->runtime;
909 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
911 ret = snd_pcm_hw_constraint_integer(runtime,
912 SNDRV_PCM_HW_PARAM_PERIODS);
917 static int rsnd_hw_params(struct snd_pcm_substream *substream,
918 struct snd_pcm_hw_params *hw_params)
920 return snd_pcm_lib_malloc_pages(substream,
921 params_buffer_bytes(hw_params));
924 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
926 struct snd_pcm_runtime *runtime = substream->runtime;
927 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
928 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
929 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
931 return bytes_to_frames(runtime, io->byte_pos);
934 static struct snd_pcm_ops rsnd_pcm_ops = {
935 .open = rsnd_pcm_open,
936 .ioctl = snd_pcm_lib_ioctl,
937 .hw_params = rsnd_hw_params,
938 .hw_free = snd_pcm_lib_free_pages,
939 .pointer = rsnd_pointer,
946 #define PREALLOC_BUFFER (32 * 1024)
947 #define PREALLOC_BUFFER_MAX (32 * 1024)
949 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
951 struct rsnd_priv *priv = snd_soc_dai_get_drvdata(rtd->cpu_dai);
952 struct rsnd_dai *rdai;
955 for_each_rsnd_dai(rdai, priv, i) {
956 ret = rsnd_dai_call(pcm_new, &rdai->playback, rdai, rtd);
960 ret = rsnd_dai_call(pcm_new, &rdai->capture, rdai, rtd);
965 return snd_pcm_lib_preallocate_pages_for_all(
968 rtd->card->snd_card->dev,
969 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
972 static void rsnd_pcm_free(struct snd_pcm *pcm)
974 snd_pcm_lib_preallocate_free_for_all(pcm);
977 static struct snd_soc_platform_driver rsnd_soc_platform = {
978 .ops = &rsnd_pcm_ops,
979 .pcm_new = rsnd_pcm_new,
980 .pcm_free = rsnd_pcm_free,
983 static const struct snd_soc_component_driver rsnd_soc_component = {
990 static int rsnd_probe(struct platform_device *pdev)
992 struct rcar_snd_info *info;
993 struct rsnd_priv *priv;
994 struct device *dev = &pdev->dev;
995 struct rsnd_dai *rdai;
996 const struct of_device_id *of_id = of_match_device(rsnd_of_match, dev);
997 const struct rsnd_of_data *of_data;
998 int (*probe_func[])(struct platform_device *pdev,
999 const struct rsnd_of_data *of_data,
1000 struct rsnd_priv *priv) = {
1013 info = devm_kzalloc(&pdev->dev,
1014 sizeof(struct rcar_snd_info), GFP_KERNEL);
1015 of_data = of_id->data;
1017 info = pdev->dev.platform_data;
1021 dev_err(dev, "driver needs R-Car sound information\n");
1028 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1030 dev_err(dev, "priv allocate failed\n");
1036 spin_lock_init(&priv->lock);
1041 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1042 ret = probe_func[i](pdev, of_data, priv);
1047 for_each_rsnd_dai(rdai, priv, i) {
1048 ret = rsnd_dai_call(probe, &rdai->playback, rdai);
1052 ret = rsnd_dai_call(probe, &rdai->capture, rdai);
1060 ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1062 dev_err(dev, "cannot snd soc register\n");
1066 ret = snd_soc_register_component(dev, &rsnd_soc_component,
1067 priv->daidrv, rsnd_rdai_nr(priv));
1069 dev_err(dev, "cannot snd dai register\n");
1073 dev_set_drvdata(dev, priv);
1075 pm_runtime_enable(dev);
1077 dev_info(dev, "probed\n");
1081 snd_soc_unregister_platform(dev);
1086 static int rsnd_remove(struct platform_device *pdev)
1088 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1089 struct rsnd_dai *rdai;
1092 pm_runtime_disable(&pdev->dev);
1094 for_each_rsnd_dai(rdai, priv, i) {
1095 ret = rsnd_dai_call(remove, &rdai->playback, rdai);
1099 ret = rsnd_dai_call(remove, &rdai->capture, rdai);
1107 static struct platform_driver rsnd_driver = {
1109 .name = "rcar_sound",
1110 .of_match_table = rsnd_of_match,
1112 .probe = rsnd_probe,
1113 .remove = rsnd_remove,
1115 module_platform_driver(rsnd_driver);
1117 MODULE_LICENSE("GPL");
1118 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1119 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1120 MODULE_ALIAS("platform:rcar-pcm-audio");