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 char *rsnd_mod_dma_name(struct rsnd_mod *mod)
143 if (!mod || !mod->ops)
146 if (!mod->ops->dma_name)
147 return mod->ops->name;
149 return mod->ops->dma_name(mod);
152 void rsnd_mod_init(struct rsnd_priv *priv,
153 struct rsnd_mod *mod,
154 struct rsnd_mod_ops *ops,
155 enum rsnd_mod_type type,
167 void rsnd_dma_stop(struct rsnd_dma *dma)
169 dmaengine_terminate_all(dma->chan);
172 static void rsnd_dma_complete(void *data)
174 struct rsnd_dma *dma = (struct rsnd_dma *)data;
175 struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
176 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
179 * Renesas sound Gen1 needs 1 DMAC,
181 * In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri.
182 * But, Audio-DMAC-peri-peri doesn't have interrupt,
183 * and this driver is assuming that here.
185 * If Audio-DMAC-peri-peri has interrpt,
186 * rsnd_dai_pointer_update() will be called twice,
187 * ant it will breaks io->byte_pos
190 rsnd_dai_pointer_update(io, io->byte_per_period);
193 void rsnd_dma_start(struct rsnd_dma *dma)
195 struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
196 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
197 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
198 struct snd_pcm_substream *substream = io->substream;
199 struct device *dev = rsnd_priv_to_dev(priv);
200 struct dma_async_tx_descriptor *desc;
202 desc = dmaengine_prep_dma_cyclic(dma->chan,
203 (dma->addr) ? dma->addr :
204 substream->runtime->dma_addr,
205 snd_pcm_lib_buffer_bytes(substream),
206 snd_pcm_lib_period_bytes(substream),
208 DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
211 dev_err(dev, "dmaengine_prep_slave_sg() fail\n");
215 desc->callback = rsnd_dma_complete;
216 desc->callback_param = dma;
218 if (dmaengine_submit(desc) < 0) {
219 dev_err(dev, "dmaengine_submit() fail\n");
223 dma_async_issue_pending(dma->chan);
226 int rsnd_dma_available(struct rsnd_dma *dma)
231 #define DMA_NAME_SIZE 16
232 #define MOD_MAX 4 /* MEM/SSI/SRC/DVC */
233 static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod)
236 return snprintf(dma_name, DMA_NAME_SIZE / 2, "%s%d",
237 rsnd_mod_dma_name(mod), rsnd_mod_id(mod));
239 return snprintf(dma_name, DMA_NAME_SIZE / 2, "mem");
243 static void rsnd_dma_of_name(struct rsnd_mod *mod_from,
244 struct rsnd_mod *mod_to,
249 index = _rsnd_dma_of_name(dma_name + index, mod_from);
250 *(dma_name + index++) = '_';
251 index = _rsnd_dma_of_name(dma_name + index, mod_to);
254 static void rsnd_dma_of_path(struct rsnd_dma *dma,
256 struct rsnd_mod **mod_from,
257 struct rsnd_mod **mod_to)
259 struct rsnd_mod *this = rsnd_dma_to_mod(dma);
260 struct rsnd_dai_stream *io = rsnd_mod_to_io(this);
261 struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
262 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
263 struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
264 struct rsnd_mod *mod[MOD_MAX];
268 for (i = 0; i < MOD_MAX; i++)
278 * mem -> SRC -> DVC -> SSI
280 mod[0] = NULL; /* for "mem" */
282 for (i = 1; i < MOD_MAX; i++) {
289 if ((!is_play) && (this == src))
292 mod[i] = (is_play) ? src : dvc;
294 mod[i] = (is_play) ? dvc : src;
307 *mod_from = mod[index - 1];
308 *mod_to = mod[index];
310 *mod_from = mod[index];
311 *mod_to = mod[index - 1];
315 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma,
318 struct device *dev = rsnd_priv_to_dev(priv);
319 struct dma_slave_config cfg;
320 struct rsnd_mod *mod_from;
321 struct rsnd_mod *mod_to;
322 char dma_name[DMA_NAME_SIZE];
327 dev_err(dev, "it already has dma channel\n");
332 dma_cap_set(DMA_SLAVE, mask);
334 rsnd_dma_of_path(dma, is_play, &mod_from, &mod_to);
335 rsnd_dma_of_name(mod_from, mod_to, dma_name);
338 cfg.direction = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
339 cfg.src_addr = rsnd_gen_dma_addr(priv, mod_from, is_play, 1);
340 cfg.dst_addr = rsnd_gen_dma_addr(priv, mod_to, is_play, 0);
341 cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
342 cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
344 dev_dbg(dev, "dma : %s %pad -> %pad\n",
345 dma_name, &cfg.src_addr, &cfg.dst_addr);
347 dma->chan = dma_request_slave_channel_compat(mask, shdma_chan_filter,
351 dev_err(dev, "can't get dma channel\n");
355 ret = dmaengine_slave_config(dma->chan, &cfg);
357 goto rsnd_dma_init_err;
359 dma->addr = is_play ? cfg.src_addr : cfg.dst_addr;
360 dma->dir = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
365 rsnd_dma_quit(priv, dma);
370 void rsnd_dma_quit(struct rsnd_priv *priv,
371 struct rsnd_dma *dma)
374 dma_release_channel(dma->chan);
382 u32 rsnd_get_adinr(struct rsnd_mod *mod)
384 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
385 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
386 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
387 struct device *dev = rsnd_priv_to_dev(priv);
388 u32 adinr = runtime->channels;
390 switch (runtime->sample_bits) {
398 dev_warn(dev, "not supported sample bits\n");
408 #define __rsnd_mod_call(mod, func, rdai...) \
410 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \
411 struct device *dev = rsnd_priv_to_dev(priv); \
412 dev_dbg(dev, "%s [%d] %s\n", \
413 rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \
414 (mod)->ops->func(mod, rdai); \
417 #define rsnd_mod_call(mod, func, rdai...) \
418 (!(mod) ? -ENODEV : \
419 !((mod)->ops->func) ? 0 : \
420 __rsnd_mod_call(mod, func, rdai))
422 #define rsnd_dai_call(fn, io, rdai...) \
424 struct rsnd_mod *mod; \
426 for (i = 0; i < RSND_MOD_MAX; i++) { \
427 mod = (io)->mod[i]; \
430 ret = rsnd_mod_call(mod, fn, rdai); \
437 static int rsnd_dai_connect(struct rsnd_mod *mod,
438 struct rsnd_dai_stream *io)
443 if (io->mod[mod->type]) {
444 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
445 struct device *dev = rsnd_priv_to_dev(priv);
447 dev_err(dev, "%s%d is not empty\n",
453 io->mod[mod->type] = mod;
459 int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai)
461 int id = rdai - priv->rdai;
463 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
469 struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id)
471 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
474 return priv->rdai + id;
477 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
479 struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
481 return rsnd_dai_get(priv, dai->id);
484 int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io)
486 return &rdai->playback == io;
490 * rsnd_soc_dai functions
492 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
494 struct snd_pcm_substream *substream = io->substream;
495 struct snd_pcm_runtime *runtime = substream->runtime;
496 int pos = io->byte_pos + additional;
498 pos %= (runtime->periods * io->byte_per_period);
503 void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
505 io->byte_pos += byte;
507 if (io->byte_pos >= io->next_period_byte) {
508 struct snd_pcm_substream *substream = io->substream;
509 struct snd_pcm_runtime *runtime = substream->runtime;
512 io->next_period_byte += io->byte_per_period;
514 if (io->period_pos >= runtime->periods) {
517 io->next_period_byte = io->byte_per_period;
520 snd_pcm_period_elapsed(substream);
524 static int rsnd_dai_stream_init(struct rsnd_dai_stream *io,
525 struct snd_pcm_substream *substream)
527 struct snd_pcm_runtime *runtime = substream->runtime;
529 io->substream = substream;
532 io->byte_per_period = runtime->period_size *
534 samples_to_bytes(runtime, 1);
535 io->next_period_byte = io->byte_per_period;
541 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
543 struct snd_soc_pcm_runtime *rtd = substream->private_data;
549 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
550 struct snd_pcm_substream *substream)
552 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
553 return &rdai->playback;
555 return &rdai->capture;
558 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
559 struct snd_soc_dai *dai)
561 struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
562 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
563 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
564 int ssi_id = rsnd_mod_id(rsnd_io_to_mod_ssi(io));
568 rsnd_lock(priv, flags);
571 case SNDRV_PCM_TRIGGER_START:
572 ret = rsnd_dai_stream_init(io, substream);
574 goto dai_trigger_end;
576 ret = rsnd_platform_call(priv, dai, start, ssi_id);
578 goto dai_trigger_end;
580 ret = rsnd_dai_call(init, io, rdai);
582 goto dai_trigger_end;
584 ret = rsnd_dai_call(start, io, rdai);
586 goto dai_trigger_end;
588 case SNDRV_PCM_TRIGGER_STOP:
589 ret = rsnd_dai_call(stop, io, rdai);
591 goto dai_trigger_end;
593 ret = rsnd_dai_call(quit, io, rdai);
595 goto dai_trigger_end;
597 ret = rsnd_platform_call(priv, dai, stop, ssi_id);
599 goto dai_trigger_end;
606 rsnd_unlock(priv, flags);
611 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
613 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
615 /* set master/slave audio interface */
616 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
617 case SND_SOC_DAIFMT_CBM_CFM:
618 rdai->clk_master = 0;
620 case SND_SOC_DAIFMT_CBS_CFS:
621 rdai->clk_master = 1; /* codec is slave, cpu is master */
628 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
629 case SND_SOC_DAIFMT_I2S:
631 rdai->data_alignment = 0;
632 rdai->frm_clk_inv = 0;
634 case SND_SOC_DAIFMT_LEFT_J:
636 rdai->data_alignment = 0;
637 rdai->frm_clk_inv = 1;
639 case SND_SOC_DAIFMT_RIGHT_J:
641 rdai->data_alignment = 1;
642 rdai->frm_clk_inv = 1;
646 /* set clock inversion */
647 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
648 case SND_SOC_DAIFMT_NB_IF:
649 rdai->bit_clk_inv = rdai->bit_clk_inv;
650 rdai->frm_clk_inv = !rdai->frm_clk_inv;
652 case SND_SOC_DAIFMT_IB_NF:
653 rdai->bit_clk_inv = !rdai->bit_clk_inv;
654 rdai->frm_clk_inv = rdai->frm_clk_inv;
656 case SND_SOC_DAIFMT_IB_IF:
657 rdai->bit_clk_inv = !rdai->bit_clk_inv;
658 rdai->frm_clk_inv = !rdai->frm_clk_inv;
660 case SND_SOC_DAIFMT_NB_NF:
668 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
669 .trigger = rsnd_soc_dai_trigger,
670 .set_fmt = rsnd_soc_dai_set_fmt,
673 #define rsnd_path_parse(priv, io, type) \
675 struct rsnd_mod *mod; \
679 if (rsnd_is_enable_path(io, type)) { \
680 id = rsnd_info_id(priv, io, type); \
682 mod = rsnd_##type##_mod_get(priv, id); \
683 ret = rsnd_dai_connect(mod, io); \
689 static int rsnd_path_init(struct rsnd_priv *priv,
690 struct rsnd_dai *rdai,
691 struct rsnd_dai_stream *io)
696 * Gen1 is created by SRU/SSI, and this SRU is base module of
697 * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU)
700 * Gen1 SRU = Gen2 SCU + SSIU + etc
702 * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
707 ret = rsnd_path_parse(priv, io, src);
712 ret = rsnd_path_parse(priv, io, ssi);
717 ret = rsnd_path_parse(priv, io, dvc);
724 static void rsnd_of_parse_dai(struct platform_device *pdev,
725 const struct rsnd_of_data *of_data,
726 struct rsnd_priv *priv)
728 struct device_node *dai_node, *dai_np;
729 struct device_node *ssi_node, *ssi_np;
730 struct device_node *src_node, *src_np;
731 struct device_node *dvc_node, *dvc_np;
732 struct device_node *playback, *capture;
733 struct rsnd_dai_platform_info *dai_info;
734 struct rcar_snd_info *info = rsnd_priv_to_info(priv);
735 struct device *dev = &pdev->dev;
737 int dai_i, ssi_i, src_i, dvc_i;
742 dai_node = of_get_child_by_name(dev->of_node, "rcar_sound,dai");
746 nr = of_get_child_count(dai_node);
750 dai_info = devm_kzalloc(dev,
751 sizeof(struct rsnd_dai_platform_info) * nr,
754 dev_err(dev, "dai info allocation error\n");
758 info->dai_info_nr = nr;
759 info->dai_info = dai_info;
761 ssi_node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi");
762 src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src");
763 dvc_node = of_get_child_by_name(dev->of_node, "rcar_sound,dvc");
765 #define mod_parse(name) \
767 struct rsnd_##name##_platform_info *name##_info; \
770 for_each_child_of_node(name##_node, name##_np) { \
771 name##_info = info->name##_info + name##_i; \
773 if (name##_np == playback) \
774 dai_info->playback.name = name##_info; \
775 if (name##_np == capture) \
776 dai_info->capture.name = name##_info; \
786 for_each_child_of_node(dai_node, dai_np) {
787 dai_info = info->dai_info + dai_i;
791 playback = of_parse_phandle(dai_np, "playback", i);
792 capture = of_parse_phandle(dai_np, "capture", i);
794 if (!playback && !capture)
801 of_node_put(playback);
802 of_node_put(capture);
809 static int rsnd_dai_probe(struct platform_device *pdev,
810 const struct rsnd_of_data *of_data,
811 struct rsnd_priv *priv)
813 struct snd_soc_dai_driver *drv;
814 struct rcar_snd_info *info = rsnd_priv_to_info(priv);
815 struct rsnd_dai *rdai;
816 struct rsnd_ssi_platform_info *pmod, *cmod;
817 struct device *dev = rsnd_priv_to_dev(priv);
821 rsnd_of_parse_dai(pdev, of_data, priv);
823 dai_nr = info->dai_info_nr;
825 dev_err(dev, "no dai\n");
829 drv = devm_kzalloc(dev, sizeof(*drv) * dai_nr, GFP_KERNEL);
830 rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL);
832 dev_err(dev, "dai allocate failed\n");
836 priv->rdai_nr = dai_nr;
840 for (i = 0; i < dai_nr; i++) {
841 rdai[i].info = &info->dai_info[i];
843 pmod = rdai[i].info->playback.ssi;
844 cmod = rdai[i].info->capture.ssi;
849 snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i);
852 * init snd_soc_dai_driver
854 drv[i].name = rdai[i].name;
855 drv[i].ops = &rsnd_soc_dai_ops;
857 drv[i].playback.rates = RSND_RATES;
858 drv[i].playback.formats = RSND_FMTS;
859 drv[i].playback.channels_min = 2;
860 drv[i].playback.channels_max = 2;
862 rdai[i].playback.info = &info->dai_info[i].playback;
863 rsnd_path_init(priv, &rdai[i], &rdai[i].playback);
866 drv[i].capture.rates = RSND_RATES;
867 drv[i].capture.formats = RSND_FMTS;
868 drv[i].capture.channels_min = 2;
869 drv[i].capture.channels_max = 2;
871 rdai[i].capture.info = &info->dai_info[i].capture;
872 rsnd_path_init(priv, &rdai[i], &rdai[i].capture);
875 dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name,
876 pmod ? "play" : " -- ",
877 cmod ? "capture" : " -- ");
886 static struct snd_pcm_hardware rsnd_pcm_hardware = {
887 .info = SNDRV_PCM_INFO_INTERLEAVED |
888 SNDRV_PCM_INFO_MMAP |
889 SNDRV_PCM_INFO_MMAP_VALID |
890 SNDRV_PCM_INFO_PAUSE,
891 .buffer_bytes_max = 64 * 1024,
892 .period_bytes_min = 32,
893 .period_bytes_max = 8192,
899 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
901 struct snd_pcm_runtime *runtime = substream->runtime;
904 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
906 ret = snd_pcm_hw_constraint_integer(runtime,
907 SNDRV_PCM_HW_PARAM_PERIODS);
912 static int rsnd_hw_params(struct snd_pcm_substream *substream,
913 struct snd_pcm_hw_params *hw_params)
915 return snd_pcm_lib_malloc_pages(substream,
916 params_buffer_bytes(hw_params));
919 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
921 struct snd_pcm_runtime *runtime = substream->runtime;
922 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
923 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
924 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
926 return bytes_to_frames(runtime, io->byte_pos);
929 static struct snd_pcm_ops rsnd_pcm_ops = {
930 .open = rsnd_pcm_open,
931 .ioctl = snd_pcm_lib_ioctl,
932 .hw_params = rsnd_hw_params,
933 .hw_free = snd_pcm_lib_free_pages,
934 .pointer = rsnd_pointer,
941 #define PREALLOC_BUFFER (32 * 1024)
942 #define PREALLOC_BUFFER_MAX (32 * 1024)
944 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
946 struct snd_soc_dai *dai = rtd->cpu_dai;
947 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
950 ret = rsnd_dai_call(pcm_new, &rdai->playback, rdai, rtd);
954 ret = rsnd_dai_call(pcm_new, &rdai->capture, rdai, rtd);
958 return snd_pcm_lib_preallocate_pages_for_all(
961 rtd->card->snd_card->dev,
962 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
965 static void rsnd_pcm_free(struct snd_pcm *pcm)
967 snd_pcm_lib_preallocate_free_for_all(pcm);
970 static struct snd_soc_platform_driver rsnd_soc_platform = {
971 .ops = &rsnd_pcm_ops,
972 .pcm_new = rsnd_pcm_new,
973 .pcm_free = rsnd_pcm_free,
976 static const struct snd_soc_component_driver rsnd_soc_component = {
983 static int rsnd_probe(struct platform_device *pdev)
985 struct rcar_snd_info *info;
986 struct rsnd_priv *priv;
987 struct device *dev = &pdev->dev;
988 struct rsnd_dai *rdai;
989 const struct of_device_id *of_id = of_match_device(rsnd_of_match, dev);
990 const struct rsnd_of_data *of_data;
991 int (*probe_func[])(struct platform_device *pdev,
992 const struct rsnd_of_data *of_data,
993 struct rsnd_priv *priv) = {
1006 info = devm_kzalloc(&pdev->dev,
1007 sizeof(struct rcar_snd_info), GFP_KERNEL);
1008 of_data = of_id->data;
1010 info = pdev->dev.platform_data;
1014 dev_err(dev, "driver needs R-Car sound information\n");
1021 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1023 dev_err(dev, "priv allocate failed\n");
1029 spin_lock_init(&priv->lock);
1034 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1035 ret = probe_func[i](pdev, of_data, priv);
1040 for_each_rsnd_dai(rdai, priv, i) {
1041 ret = rsnd_dai_call(probe, &rdai->playback, rdai);
1043 goto exit_snd_probe;
1045 ret = rsnd_dai_call(probe, &rdai->capture, rdai);
1047 goto exit_snd_probe;
1053 ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1055 dev_err(dev, "cannot snd soc register\n");
1059 ret = snd_soc_register_component(dev, &rsnd_soc_component,
1060 priv->daidrv, rsnd_rdai_nr(priv));
1062 dev_err(dev, "cannot snd dai register\n");
1066 dev_set_drvdata(dev, priv);
1068 pm_runtime_enable(dev);
1070 dev_info(dev, "probed\n");
1074 snd_soc_unregister_platform(dev);
1076 for_each_rsnd_dai(rdai, priv, i) {
1077 rsnd_dai_call(remove, &rdai->playback, rdai);
1078 rsnd_dai_call(remove, &rdai->capture, rdai);
1084 static int rsnd_remove(struct platform_device *pdev)
1086 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1087 struct rsnd_dai *rdai;
1090 pm_runtime_disable(&pdev->dev);
1092 for_each_rsnd_dai(rdai, priv, i) {
1093 ret |= rsnd_dai_call(remove, &rdai->playback, rdai);
1094 ret |= rsnd_dai_call(remove, &rdai->capture, rdai);
1100 static struct platform_driver rsnd_driver = {
1102 .name = "rcar_sound",
1103 .of_match_table = rsnd_of_match,
1105 .probe = rsnd_probe,
1106 .remove = rsnd_remove,
1108 module_platform_driver(rsnd_driver);
1110 MODULE_LICENSE("GPL");
1111 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1112 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1113 MODULE_ALIAS("platform:rcar-pcm-audio");