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_mod *mod,
153 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");
352 goto rsnd_dma_channel_err;
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);
366 rsnd_dma_channel_err:
369 * DMA failed. try to PIO mode
371 * rsnd_ssi_fallback()
372 * rsnd_rdai_continuance_probe()
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, param...) \
417 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \
418 struct device *dev = rsnd_priv_to_dev(priv); \
419 u32 mask = 1 << __rsnd_mod_shift_##func; \
420 u32 call = __rsnd_mod_call_##func << __rsnd_mod_shift_##func; \
422 if ((mod->status & mask) == call) { \
423 dev_dbg(dev, "%s[%d] %s\n", \
424 rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \
425 ret = (mod)->ops->func(mod, param); \
426 mod->status = (mod->status & ~mask) | (~call & mask); \
431 #define rsnd_mod_call(mod, func, param...) \
432 (!(mod) ? -ENODEV : \
433 !((mod)->ops->func) ? 0 : \
434 __rsnd_mod_call(mod, func, param))
436 #define rsnd_dai_call(fn, io, param...) \
438 struct rsnd_mod *mod; \
440 for (i = 0; i < RSND_MOD_MAX; i++) { \
441 mod = (io)->mod[i]; \
444 ret = rsnd_mod_call(mod, fn, param); \
451 static int rsnd_dai_connect(struct rsnd_mod *mod,
452 struct rsnd_dai_stream *io)
457 if (io->mod[mod->type]) {
458 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
459 struct device *dev = rsnd_priv_to_dev(priv);
461 dev_err(dev, "%s%d is not empty\n",
467 io->mod[mod->type] = mod;
473 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
474 struct rsnd_dai_stream *io)
477 io->mod[mod->type] = NULL;
480 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
482 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
485 return priv->rdai + id;
488 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
490 struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
492 return rsnd_rdai_get(priv, dai->id);
496 * rsnd_soc_dai functions
498 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
500 struct snd_pcm_substream *substream = io->substream;
501 struct snd_pcm_runtime *runtime = substream->runtime;
502 int pos = io->byte_pos + additional;
504 pos %= (runtime->periods * io->byte_per_period);
509 void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
511 io->byte_pos += byte;
513 if (io->byte_pos >= io->next_period_byte) {
514 struct snd_pcm_substream *substream = io->substream;
515 struct snd_pcm_runtime *runtime = substream->runtime;
518 io->next_period_byte += io->byte_per_period;
520 if (io->period_pos >= runtime->periods) {
523 io->next_period_byte = io->byte_per_period;
526 snd_pcm_period_elapsed(substream);
530 static int rsnd_dai_stream_init(struct rsnd_dai_stream *io,
531 struct snd_pcm_substream *substream)
533 struct snd_pcm_runtime *runtime = substream->runtime;
535 io->substream = substream;
538 io->byte_per_period = runtime->period_size *
540 samples_to_bytes(runtime, 1);
541 io->next_period_byte = io->byte_per_period;
547 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
549 struct snd_soc_pcm_runtime *rtd = substream->private_data;
555 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
556 struct snd_pcm_substream *substream)
558 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
559 return &rdai->playback;
561 return &rdai->capture;
564 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
565 struct snd_soc_dai *dai)
567 struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
568 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
569 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
570 int ssi_id = rsnd_mod_id(rsnd_io_to_mod_ssi(io));
574 rsnd_lock(priv, flags);
577 case SNDRV_PCM_TRIGGER_START:
578 ret = rsnd_dai_stream_init(io, substream);
580 goto dai_trigger_end;
582 ret = rsnd_platform_call(priv, dai, start, ssi_id);
584 goto dai_trigger_end;
586 ret = rsnd_dai_call(init, io, priv);
588 goto dai_trigger_end;
590 ret = rsnd_dai_call(start, io, priv);
592 goto dai_trigger_end;
594 case SNDRV_PCM_TRIGGER_STOP:
595 ret = rsnd_dai_call(stop, io, priv);
597 goto dai_trigger_end;
599 ret = rsnd_dai_call(quit, io, priv);
601 goto dai_trigger_end;
603 ret = rsnd_platform_call(priv, dai, stop, ssi_id);
605 goto dai_trigger_end;
612 rsnd_unlock(priv, flags);
617 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
619 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
621 /* set master/slave audio interface */
622 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
623 case SND_SOC_DAIFMT_CBM_CFM:
624 rdai->clk_master = 0;
626 case SND_SOC_DAIFMT_CBS_CFS:
627 rdai->clk_master = 1; /* codec is slave, cpu is master */
634 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
635 case SND_SOC_DAIFMT_I2S:
637 rdai->data_alignment = 0;
638 rdai->frm_clk_inv = 0;
640 case SND_SOC_DAIFMT_LEFT_J:
642 rdai->data_alignment = 0;
643 rdai->frm_clk_inv = 1;
645 case SND_SOC_DAIFMT_RIGHT_J:
647 rdai->data_alignment = 1;
648 rdai->frm_clk_inv = 1;
652 /* set clock inversion */
653 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
654 case SND_SOC_DAIFMT_NB_IF:
655 rdai->bit_clk_inv = rdai->bit_clk_inv;
656 rdai->frm_clk_inv = !rdai->frm_clk_inv;
658 case SND_SOC_DAIFMT_IB_NF:
659 rdai->bit_clk_inv = !rdai->bit_clk_inv;
660 rdai->frm_clk_inv = rdai->frm_clk_inv;
662 case SND_SOC_DAIFMT_IB_IF:
663 rdai->bit_clk_inv = !rdai->bit_clk_inv;
664 rdai->frm_clk_inv = !rdai->frm_clk_inv;
666 case SND_SOC_DAIFMT_NB_NF:
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 #define rsnd_path_break(priv, io, type) \
697 struct rsnd_mod *mod; \
700 if (rsnd_is_enable_path(io, type)) { \
701 id = rsnd_info_id(priv, io, type); \
703 mod = rsnd_##type##_mod_get(priv, id); \
704 rsnd_dai_disconnect(mod, io); \
709 static int rsnd_path_init(struct rsnd_priv *priv,
710 struct rsnd_dai *rdai,
711 struct rsnd_dai_stream *io)
716 * Gen1 is created by SRU/SSI, and this SRU is base module of
717 * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU)
720 * Gen1 SRU = Gen2 SCU + SSIU + etc
722 * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
727 ret = rsnd_path_parse(priv, io, src);
732 ret = rsnd_path_parse(priv, io, ssi);
737 ret = rsnd_path_parse(priv, io, dvc);
744 static void rsnd_of_parse_dai(struct platform_device *pdev,
745 const struct rsnd_of_data *of_data,
746 struct rsnd_priv *priv)
748 struct device_node *dai_node, *dai_np;
749 struct device_node *ssi_node, *ssi_np;
750 struct device_node *src_node, *src_np;
751 struct device_node *dvc_node, *dvc_np;
752 struct device_node *playback, *capture;
753 struct rsnd_dai_platform_info *dai_info;
754 struct rcar_snd_info *info = rsnd_priv_to_info(priv);
755 struct device *dev = &pdev->dev;
757 int dai_i, ssi_i, src_i, dvc_i;
762 dai_node = of_get_child_by_name(dev->of_node, "rcar_sound,dai");
766 nr = of_get_child_count(dai_node);
770 dai_info = devm_kzalloc(dev,
771 sizeof(struct rsnd_dai_platform_info) * nr,
774 dev_err(dev, "dai info allocation error\n");
778 info->dai_info_nr = nr;
779 info->dai_info = dai_info;
781 ssi_node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi");
782 src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src");
783 dvc_node = of_get_child_by_name(dev->of_node, "rcar_sound,dvc");
785 #define mod_parse(name) \
787 struct rsnd_##name##_platform_info *name##_info; \
790 for_each_child_of_node(name##_node, name##_np) { \
791 name##_info = info->name##_info + name##_i; \
793 if (name##_np == playback) \
794 dai_info->playback.name = name##_info; \
795 if (name##_np == capture) \
796 dai_info->capture.name = name##_info; \
806 for_each_child_of_node(dai_node, dai_np) {
807 dai_info = info->dai_info + dai_i;
811 playback = of_parse_phandle(dai_np, "playback", i);
812 capture = of_parse_phandle(dai_np, "capture", i);
814 if (!playback && !capture)
821 of_node_put(playback);
822 of_node_put(capture);
829 static int rsnd_dai_probe(struct platform_device *pdev,
830 const struct rsnd_of_data *of_data,
831 struct rsnd_priv *priv)
833 struct snd_soc_dai_driver *drv;
834 struct rcar_snd_info *info = rsnd_priv_to_info(priv);
835 struct rsnd_dai *rdai;
836 struct rsnd_ssi_platform_info *pmod, *cmod;
837 struct device *dev = rsnd_priv_to_dev(priv);
841 rsnd_of_parse_dai(pdev, of_data, priv);
843 dai_nr = info->dai_info_nr;
845 dev_err(dev, "no dai\n");
849 drv = devm_kzalloc(dev, sizeof(*drv) * dai_nr, GFP_KERNEL);
850 rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL);
852 dev_err(dev, "dai allocate failed\n");
856 priv->rdai_nr = dai_nr;
860 for (i = 0; i < dai_nr; i++) {
862 pmod = info->dai_info[i].playback.ssi;
863 cmod = info->dai_info[i].capture.ssi;
868 snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i);
872 * init snd_soc_dai_driver
874 drv[i].name = rdai[i].name;
875 drv[i].ops = &rsnd_soc_dai_ops;
877 drv[i].playback.rates = RSND_RATES;
878 drv[i].playback.formats = RSND_FMTS;
879 drv[i].playback.channels_min = 2;
880 drv[i].playback.channels_max = 2;
882 rdai[i].playback.info = &info->dai_info[i].playback;
883 rdai[i].playback.rdai = rdai + i;
884 rsnd_path_init(priv, &rdai[i], &rdai[i].playback);
887 drv[i].capture.rates = RSND_RATES;
888 drv[i].capture.formats = RSND_FMTS;
889 drv[i].capture.channels_min = 2;
890 drv[i].capture.channels_max = 2;
892 rdai[i].capture.info = &info->dai_info[i].capture;
893 rdai[i].capture.rdai = rdai + i;
894 rsnd_path_init(priv, &rdai[i], &rdai[i].capture);
897 dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name,
898 pmod ? "play" : " -- ",
899 cmod ? "capture" : " -- ");
908 static struct snd_pcm_hardware rsnd_pcm_hardware = {
909 .info = SNDRV_PCM_INFO_INTERLEAVED |
910 SNDRV_PCM_INFO_MMAP |
911 SNDRV_PCM_INFO_MMAP_VALID,
912 .buffer_bytes_max = 64 * 1024,
913 .period_bytes_min = 32,
914 .period_bytes_max = 8192,
920 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
922 struct snd_pcm_runtime *runtime = substream->runtime;
925 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
927 ret = snd_pcm_hw_constraint_integer(runtime,
928 SNDRV_PCM_HW_PARAM_PERIODS);
933 static int rsnd_hw_params(struct snd_pcm_substream *substream,
934 struct snd_pcm_hw_params *hw_params)
936 return snd_pcm_lib_malloc_pages(substream,
937 params_buffer_bytes(hw_params));
940 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
942 struct snd_pcm_runtime *runtime = substream->runtime;
943 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
944 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
945 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
947 return bytes_to_frames(runtime, io->byte_pos);
950 static struct snd_pcm_ops rsnd_pcm_ops = {
951 .open = rsnd_pcm_open,
952 .ioctl = snd_pcm_lib_ioctl,
953 .hw_params = rsnd_hw_params,
954 .hw_free = snd_pcm_lib_free_pages,
955 .pointer = rsnd_pointer,
961 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
962 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
963 struct snd_ctl_elem_info *uinfo)
965 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
968 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
969 uinfo->count = cfg->size;
970 uinfo->value.enumerated.items = cfg->max;
971 if (uinfo->value.enumerated.item >= cfg->max)
972 uinfo->value.enumerated.item = cfg->max - 1;
973 strlcpy(uinfo->value.enumerated.name,
974 cfg->texts[uinfo->value.enumerated.item],
975 sizeof(uinfo->value.enumerated.name));
977 uinfo->count = cfg->size;
978 uinfo->value.integer.min = 0;
979 uinfo->value.integer.max = cfg->max;
980 uinfo->type = (cfg->max == 1) ?
981 SNDRV_CTL_ELEM_TYPE_BOOLEAN :
982 SNDRV_CTL_ELEM_TYPE_INTEGER;
988 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
989 struct snd_ctl_elem_value *uc)
991 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
994 for (i = 0; i < cfg->size; i++)
996 uc->value.enumerated.item[i] = cfg->val[i];
998 uc->value.integer.value[i] = cfg->val[i];
1003 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1004 struct snd_ctl_elem_value *uc)
1006 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
1007 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
1010 for (i = 0; i < cfg->size; i++) {
1012 change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1013 cfg->val[i] = uc->value.enumerated.item[i];
1015 change |= (uc->value.integer.value[i] != cfg->val[i]);
1016 cfg->val[i] = uc->value.integer.value[i];
1026 static int __rsnd_kctrl_new(struct rsnd_mod *mod,
1027 struct snd_soc_pcm_runtime *rtd,
1028 const unsigned char *name,
1029 struct rsnd_kctrl_cfg *cfg,
1030 void (*update)(struct rsnd_mod *mod))
1032 struct snd_card *card = rtd->card->snd_card;
1033 struct snd_kcontrol *kctrl;
1034 struct snd_kcontrol_new knew = {
1035 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1037 .info = rsnd_kctrl_info,
1038 .get = rsnd_kctrl_get,
1039 .put = rsnd_kctrl_put,
1040 .private_value = (unsigned long)cfg,
1044 kctrl = snd_ctl_new1(&knew, mod);
1048 ret = snd_ctl_add(card, kctrl);
1050 snd_ctl_free_one(kctrl);
1054 cfg->update = update;
1061 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg)
1063 snd_ctl_remove(cfg->card, cfg->kctrl);
1066 int rsnd_kctrl_new_m(struct rsnd_mod *mod,
1067 struct snd_soc_pcm_runtime *rtd,
1068 const unsigned char *name,
1069 void (*update)(struct rsnd_mod *mod),
1070 struct rsnd_kctrl_cfg_m *_cfg,
1073 _cfg->cfg.max = max;
1074 _cfg->cfg.size = RSND_DVC_CHANNELS;
1075 _cfg->cfg.val = _cfg->val;
1076 return __rsnd_kctrl_new(mod, rtd, name, &_cfg->cfg, update);
1079 int rsnd_kctrl_new_s(struct rsnd_mod *mod,
1080 struct snd_soc_pcm_runtime *rtd,
1081 const unsigned char *name,
1082 void (*update)(struct rsnd_mod *mod),
1083 struct rsnd_kctrl_cfg_s *_cfg,
1086 _cfg->cfg.max = max;
1088 _cfg->cfg.val = &_cfg->val;
1089 return __rsnd_kctrl_new(mod, rtd, name, &_cfg->cfg, update);
1092 int rsnd_kctrl_new_e(struct rsnd_mod *mod,
1093 struct snd_soc_pcm_runtime *rtd,
1094 const unsigned char *name,
1095 struct rsnd_kctrl_cfg_s *_cfg,
1096 void (*update)(struct rsnd_mod *mod),
1097 const char * const *texts,
1100 _cfg->cfg.max = max;
1102 _cfg->cfg.val = &_cfg->val;
1103 _cfg->cfg.texts = texts;
1104 return __rsnd_kctrl_new(mod, rtd, name, &_cfg->cfg, update);
1111 #define PREALLOC_BUFFER (32 * 1024)
1112 #define PREALLOC_BUFFER_MAX (32 * 1024)
1114 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1116 struct snd_soc_dai *dai = rtd->cpu_dai;
1117 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1120 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1124 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1128 return snd_pcm_lib_preallocate_pages_for_all(
1131 rtd->card->snd_card->dev,
1132 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1135 static struct snd_soc_platform_driver rsnd_soc_platform = {
1136 .ops = &rsnd_pcm_ops,
1137 .pcm_new = rsnd_pcm_new,
1140 static const struct snd_soc_component_driver rsnd_soc_component = {
1144 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1145 struct rsnd_dai_stream *io)
1149 ret = rsnd_dai_call(probe, io, priv);
1150 if (ret == -EAGAIN) {
1152 * Fallback to PIO mode
1156 * call "remove" for SSI/SRC/DVC
1157 * SSI will be switch to PIO mode if it was DMA mode
1160 * rsnd_ssi_fallback()
1162 rsnd_dai_call(remove, io, priv);
1165 * remove SRC/DVC from DAI,
1167 rsnd_path_break(priv, io, src);
1168 rsnd_path_break(priv, io, dvc);
1173 rsnd_dai_call(fallback, io, priv);
1177 * DAI has SSI which is PIO mode only now.
1179 ret = rsnd_dai_call(probe, io, priv);
1188 static int rsnd_probe(struct platform_device *pdev)
1190 struct rcar_snd_info *info;
1191 struct rsnd_priv *priv;
1192 struct device *dev = &pdev->dev;
1193 struct rsnd_dai *rdai;
1194 const struct of_device_id *of_id = of_match_device(rsnd_of_match, dev);
1195 const struct rsnd_of_data *of_data;
1196 int (*probe_func[])(struct platform_device *pdev,
1197 const struct rsnd_of_data *of_data,
1198 struct rsnd_priv *priv) = {
1211 info = devm_kzalloc(&pdev->dev,
1212 sizeof(struct rcar_snd_info), GFP_KERNEL);
1213 of_data = of_id->data;
1215 info = pdev->dev.platform_data;
1219 dev_err(dev, "driver needs R-Car sound information\n");
1226 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1228 dev_err(dev, "priv allocate failed\n");
1234 spin_lock_init(&priv->lock);
1239 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1240 ret = probe_func[i](pdev, of_data, priv);
1245 for_each_rsnd_dai(rdai, priv, i) {
1246 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1248 goto exit_snd_probe;
1250 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1252 goto exit_snd_probe;
1258 ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1260 dev_err(dev, "cannot snd soc register\n");
1264 ret = snd_soc_register_component(dev, &rsnd_soc_component,
1265 priv->daidrv, rsnd_rdai_nr(priv));
1267 dev_err(dev, "cannot snd dai register\n");
1271 dev_set_drvdata(dev, priv);
1273 pm_runtime_enable(dev);
1275 dev_info(dev, "probed\n");
1279 snd_soc_unregister_platform(dev);
1281 for_each_rsnd_dai(rdai, priv, i) {
1282 rsnd_dai_call(remove, &rdai->playback, priv);
1283 rsnd_dai_call(remove, &rdai->capture, priv);
1289 static int rsnd_remove(struct platform_device *pdev)
1291 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1292 struct rsnd_dai *rdai;
1295 pm_runtime_disable(&pdev->dev);
1297 for_each_rsnd_dai(rdai, priv, i) {
1298 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1299 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1302 snd_soc_unregister_component(&pdev->dev);
1303 snd_soc_unregister_platform(&pdev->dev);
1308 static struct platform_driver rsnd_driver = {
1310 .name = "rcar_sound",
1311 .of_match_table = rsnd_of_match,
1313 .probe = rsnd_probe,
1314 .remove = rsnd_remove,
1316 module_platform_driver(rsnd_driver);
1318 MODULE_LICENSE("GPL");
1319 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1320 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1321 MODULE_ALIAS("platform:rcar-pcm-audio");