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>
99 #define RSND_RATES SNDRV_PCM_RATE_8000_96000
100 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
102 static const struct of_device_id rsnd_of_match[] = {
103 { .compatible = "renesas,rcar_sound-gen1", .data = (void *)RSND_GEN1 },
104 { .compatible = "renesas,rcar_sound-gen2", .data = (void *)RSND_GEN2 },
105 { .compatible = "renesas,rcar_sound-gen3", .data = (void *)RSND_GEN2 }, /* gen2 compatible */
108 MODULE_DEVICE_TABLE(of, rsnd_of_match);
113 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
115 if (mod->type != type) {
116 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
117 struct device *dev = rsnd_priv_to_dev(priv);
119 dev_warn(dev, "%s[%d] is not your expected module\n",
120 rsnd_mod_name(mod), rsnd_mod_id(mod));
124 char *rsnd_mod_name(struct rsnd_mod *mod)
126 if (!mod || !mod->ops)
129 return mod->ops->name;
132 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
133 struct rsnd_mod *mod)
135 if (!mod || !mod->ops || !mod->ops->dma_req)
138 return mod->ops->dma_req(io, mod);
141 u32 *rsnd_mod_get_status(struct rsnd_dai_stream *io,
142 struct rsnd_mod *mod,
143 enum rsnd_mod_type type)
148 int rsnd_mod_init(struct rsnd_priv *priv,
149 struct rsnd_mod *mod,
150 struct rsnd_mod_ops *ops,
152 u32* (*get_status)(struct rsnd_dai_stream *io,
153 struct rsnd_mod *mod,
154 enum rsnd_mod_type type),
155 enum rsnd_mod_type type,
158 int ret = clk_prepare(clk);
168 mod->get_status = get_status;
173 void rsnd_mod_quit(struct rsnd_mod *mod)
176 clk_unprepare(mod->clk);
180 void rsnd_mod_interrupt(struct rsnd_mod *mod,
181 void (*callback)(struct rsnd_mod *mod,
182 struct rsnd_dai_stream *io))
184 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
185 struct rsnd_dai_stream *io;
186 struct rsnd_dai *rdai;
189 for_each_rsnd_dai(rdai, priv, i) {
190 io = &rdai->playback;
191 if (mod == io->mod[mod->type])
195 if (mod == io->mod[mod->type])
200 int rsnd_io_is_working(struct rsnd_dai_stream *io)
202 /* see rsnd_dai_stream_init/quit() */
203 return !!io->substream;
206 void rsnd_set_slot(struct rsnd_dai *rdai,
210 rdai->slots_num = num;
213 int rsnd_get_slot(struct rsnd_dai_stream *io)
215 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
220 int rsnd_get_slot_num(struct rsnd_dai_stream *io)
222 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
224 return rdai->slots_num;
227 int rsnd_get_slot_width(struct rsnd_dai_stream *io)
229 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
230 int chan = runtime->channels;
232 /* Multi channel Mode */
233 if (rsnd_ssi_multi_slaves(io))
234 chan /= rsnd_get_slot_num(io);
236 /* TDM Extend Mode needs 8ch */
246 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
248 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
249 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
250 struct device *dev = rsnd_priv_to_dev(priv);
252 switch (runtime->sample_bits) {
259 dev_warn(dev, "not supported sample bits\n");
264 u32 rsnd_get_adinr_chan(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
266 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
267 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
268 struct device *dev = rsnd_priv_to_dev(priv);
269 u32 chan = runtime->channels;
279 dev_warn(dev, "not supported channel\n");
290 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
292 struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
293 struct rsnd_mod *target;
294 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
295 u32 val = 0x76543210;
298 if (rsnd_io_is_play(io)) {
299 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
301 target = src ? src : ssi;
303 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
305 target = cmd ? cmd : ssi;
308 mask <<= runtime->channels * 4;
311 switch (runtime->sample_bits) {
313 val |= 0x67452301 & ~mask;
316 val |= 0x76543210 & ~mask;
321 * exchange channeles on SRC if possible,
322 * otherwise, R/L volume settings on DVC
323 * changes inverted channels
334 #define rsnd_mod_call(idx, io, func, param...) \
336 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \
337 struct rsnd_mod *mod = (io)->mod[idx]; \
338 struct device *dev = rsnd_priv_to_dev(priv); \
339 u32 *status = mod->get_status(io, mod, idx); \
340 u32 mask = 0xF << __rsnd_mod_shift_##func; \
341 u8 val = (*status >> __rsnd_mod_shift_##func) & 0xF; \
342 u8 add = ((val + __rsnd_mod_add_##func) & 0xF); \
344 int call = (val == __rsnd_mod_call_##func) && (mod)->ops->func; \
348 *status = (*status & ~mask) + \
349 (add << __rsnd_mod_shift_##func); \
350 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \
351 rsnd_mod_name(mod), rsnd_mod_id(mod), \
352 *status, call ? #func : ""); \
354 ret = (mod)->ops->func(mod, io, param); \
356 dev_dbg(dev, "%s[%d] : rsnd_mod_call error %d\n", \
357 rsnd_mod_name(mod), rsnd_mod_id(mod), ret); \
361 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
395 #define rsnd_dai_call(fn, io, param...) \
397 struct rsnd_mod *mod; \
398 int type, is_play = rsnd_io_is_play(io); \
400 for (i = 0; i < RSND_MOD_MAX; i++) { \
401 type = rsnd_mod_sequence[is_play][i]; \
402 mod = (io)->mod[type]; \
405 ret |= rsnd_mod_call(type, io, fn, param); \
410 int rsnd_dai_connect(struct rsnd_mod *mod,
411 struct rsnd_dai_stream *io,
412 enum rsnd_mod_type type)
414 struct rsnd_priv *priv;
420 if (io->mod[type] == mod)
426 priv = rsnd_mod_to_priv(mod);
427 dev = rsnd_priv_to_dev(priv);
431 dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
432 rsnd_mod_name(mod), rsnd_mod_id(mod),
433 rsnd_io_is_play(io) ? "Playback" : "Capture");
438 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
439 struct rsnd_dai_stream *io,
440 enum rsnd_mod_type type)
442 io->mod[type] = NULL;
445 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
447 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
450 return priv->rdai + id;
453 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
454 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
456 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
458 return rsnd_rdai_get(priv, dai->id);
462 * rsnd_soc_dai functions
464 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
466 struct snd_pcm_substream *substream = io->substream;
467 struct snd_pcm_runtime *runtime = substream->runtime;
468 int pos = io->byte_pos + additional;
470 pos %= (runtime->periods * io->byte_per_period);
475 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
477 io->byte_pos += byte;
479 if (io->byte_pos >= io->next_period_byte) {
480 struct snd_pcm_substream *substream = io->substream;
481 struct snd_pcm_runtime *runtime = substream->runtime;
484 io->next_period_byte += io->byte_per_period;
486 if (io->period_pos >= runtime->periods) {
489 io->next_period_byte = io->byte_per_period;
498 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
500 struct snd_pcm_substream *substream = io->substream;
503 * this function should be called...
505 * - if rsnd_dai_pointer_update() returns true
506 * - without spin lock
509 snd_pcm_period_elapsed(substream);
512 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
513 struct snd_pcm_substream *substream)
515 struct snd_pcm_runtime *runtime = substream->runtime;
517 io->substream = substream;
520 io->byte_per_period = runtime->period_size *
522 samples_to_bytes(runtime, 1);
523 io->next_period_byte = io->byte_per_period;
526 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
528 io->substream = NULL;
532 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
534 struct snd_soc_pcm_runtime *rtd = substream->private_data;
540 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
541 struct snd_pcm_substream *substream)
543 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
544 return &rdai->playback;
546 return &rdai->capture;
549 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
550 struct snd_soc_dai *dai)
552 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
553 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
554 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
558 spin_lock_irqsave(&priv->lock, flags);
561 case SNDRV_PCM_TRIGGER_START:
562 rsnd_dai_stream_init(io, substream);
564 ret = rsnd_dai_call(init, io, priv);
566 goto dai_trigger_end;
568 ret = rsnd_dai_call(start, io, priv);
570 goto dai_trigger_end;
572 ret = rsnd_dai_call(irq, io, priv, 1);
574 goto dai_trigger_end;
577 case SNDRV_PCM_TRIGGER_STOP:
578 ret = rsnd_dai_call(irq, io, priv, 0);
580 ret |= rsnd_dai_call(stop, io, priv);
582 ret |= rsnd_dai_call(quit, io, priv);
584 rsnd_dai_stream_quit(io);
591 spin_unlock_irqrestore(&priv->lock, flags);
596 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
598 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
600 /* set master/slave audio interface */
601 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
602 case SND_SOC_DAIFMT_CBM_CFM:
603 rdai->clk_master = 0;
605 case SND_SOC_DAIFMT_CBS_CFS:
606 rdai->clk_master = 1; /* codec is slave, cpu is master */
613 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
614 case SND_SOC_DAIFMT_I2S:
616 rdai->data_alignment = 0;
617 rdai->frm_clk_inv = 0;
619 case SND_SOC_DAIFMT_LEFT_J:
621 rdai->data_alignment = 0;
622 rdai->frm_clk_inv = 1;
624 case SND_SOC_DAIFMT_RIGHT_J:
626 rdai->data_alignment = 1;
627 rdai->frm_clk_inv = 1;
631 /* set clock inversion */
632 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
633 case SND_SOC_DAIFMT_NB_IF:
634 rdai->bit_clk_inv = rdai->bit_clk_inv;
635 rdai->frm_clk_inv = !rdai->frm_clk_inv;
637 case SND_SOC_DAIFMT_IB_NF:
638 rdai->bit_clk_inv = !rdai->bit_clk_inv;
639 rdai->frm_clk_inv = rdai->frm_clk_inv;
641 case SND_SOC_DAIFMT_IB_IF:
642 rdai->bit_clk_inv = !rdai->bit_clk_inv;
643 rdai->frm_clk_inv = !rdai->frm_clk_inv;
645 case SND_SOC_DAIFMT_NB_NF:
653 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
654 u32 tx_mask, u32 rx_mask,
655 int slots, int slot_width)
657 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
658 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
659 struct device *dev = rsnd_priv_to_dev(priv);
663 /* TDM Extend Mode */
664 rsnd_set_slot(rdai, slots, 1);
667 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
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,
677 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot,
680 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
681 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
682 struct device_node *node,
683 struct device_node *playback,
684 struct device_node *capture)
686 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
687 struct device_node *np;
688 struct rsnd_mod *mod;
695 for_each_child_of_node(node, np) {
696 mod = mod_get(priv, i);
698 rsnd_dai_connect(mod, &rdai->playback, mod->type);
700 rsnd_dai_connect(mod, &rdai->capture, mod->type);
707 static int rsnd_dai_probe(struct rsnd_priv *priv)
709 struct device_node *dai_node;
710 struct device_node *dai_np;
711 struct device_node *playback, *capture;
712 struct rsnd_dai_stream *io_playback;
713 struct rsnd_dai_stream *io_capture;
714 struct snd_soc_dai_driver *rdrv, *drv;
715 struct rsnd_dai *rdai;
716 struct device *dev = rsnd_priv_to_dev(priv);
720 dai_node = rsnd_dai_of_node(priv);
721 nr = of_get_child_count(dai_node);
724 goto rsnd_dai_probe_done;
727 rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL);
728 rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL);
729 if (!rdrv || !rdai) {
731 goto rsnd_dai_probe_done;
742 for_each_child_of_node(dai_node, dai_np) {
743 rdai = rsnd_rdai_get(priv, dai_i);
745 io_playback = &rdai->playback;
746 io_capture = &rdai->capture;
748 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
751 drv->name = rdai->name;
752 drv->ops = &rsnd_soc_dai_ops;
754 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE,
755 "DAI%d Playback", dai_i);
756 drv->playback.rates = RSND_RATES;
757 drv->playback.formats = RSND_FMTS;
758 drv->playback.channels_min = 2;
759 drv->playback.channels_max = 6;
760 drv->playback.stream_name = rdai->playback.name;
762 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
763 "DAI%d Capture", dai_i);
764 drv->capture.rates = RSND_RATES;
765 drv->capture.formats = RSND_FMTS;
766 drv->capture.channels_min = 2;
767 drv->capture.channels_max = 6;
768 drv->capture.stream_name = rdai->capture.name;
770 rdai->playback.rdai = rdai;
771 rdai->capture.rdai = rdai;
772 rsnd_set_slot(rdai, 2, 1); /* default */
774 for (io_i = 0;; io_i++) {
775 playback = of_parse_phandle(dai_np, "playback", io_i);
776 capture = of_parse_phandle(dai_np, "capture", io_i);
778 if (!playback && !capture)
781 rsnd_parse_connect_ssi(rdai, playback, capture);
782 rsnd_parse_connect_src(rdai, playback, capture);
783 rsnd_parse_connect_ctu(rdai, playback, capture);
784 rsnd_parse_connect_mix(rdai, playback, capture);
785 rsnd_parse_connect_dvc(rdai, playback, capture);
787 of_node_put(playback);
788 of_node_put(capture);
793 dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
794 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ",
795 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- ");
801 of_node_put(dai_node);
809 static struct snd_pcm_hardware rsnd_pcm_hardware = {
810 .info = SNDRV_PCM_INFO_INTERLEAVED |
811 SNDRV_PCM_INFO_MMAP |
812 SNDRV_PCM_INFO_MMAP_VALID,
813 .buffer_bytes_max = 64 * 1024,
814 .period_bytes_min = 32,
815 .period_bytes_max = 8192,
821 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
823 struct snd_pcm_runtime *runtime = substream->runtime;
826 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
828 ret = snd_pcm_hw_constraint_integer(runtime,
829 SNDRV_PCM_HW_PARAM_PERIODS);
834 static int rsnd_hw_params(struct snd_pcm_substream *substream,
835 struct snd_pcm_hw_params *hw_params)
837 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
838 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
839 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
842 ret = rsnd_dai_call(hw_params, io, substream, hw_params);
846 return snd_pcm_lib_malloc_pages(substream,
847 params_buffer_bytes(hw_params));
850 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
852 struct snd_pcm_runtime *runtime = substream->runtime;
853 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
854 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
855 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
857 return bytes_to_frames(runtime, io->byte_pos);
860 static struct snd_pcm_ops rsnd_pcm_ops = {
861 .open = rsnd_pcm_open,
862 .ioctl = snd_pcm_lib_ioctl,
863 .hw_params = rsnd_hw_params,
864 .hw_free = snd_pcm_lib_free_pages,
865 .pointer = rsnd_pointer,
871 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
872 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
873 struct snd_ctl_elem_info *uinfo)
875 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
878 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
879 uinfo->count = cfg->size;
880 uinfo->value.enumerated.items = cfg->max;
881 if (uinfo->value.enumerated.item >= cfg->max)
882 uinfo->value.enumerated.item = cfg->max - 1;
883 strlcpy(uinfo->value.enumerated.name,
884 cfg->texts[uinfo->value.enumerated.item],
885 sizeof(uinfo->value.enumerated.name));
887 uinfo->count = cfg->size;
888 uinfo->value.integer.min = 0;
889 uinfo->value.integer.max = cfg->max;
890 uinfo->type = (cfg->max == 1) ?
891 SNDRV_CTL_ELEM_TYPE_BOOLEAN :
892 SNDRV_CTL_ELEM_TYPE_INTEGER;
898 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
899 struct snd_ctl_elem_value *uc)
901 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
904 for (i = 0; i < cfg->size; i++)
906 uc->value.enumerated.item[i] = cfg->val[i];
908 uc->value.integer.value[i] = cfg->val[i];
913 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
914 struct snd_ctl_elem_value *uc)
916 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
917 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
920 for (i = 0; i < cfg->size; i++) {
922 change |= (uc->value.enumerated.item[i] != cfg->val[i]);
923 cfg->val[i] = uc->value.enumerated.item[i];
925 change |= (uc->value.integer.value[i] != cfg->val[i]);
926 cfg->val[i] = uc->value.integer.value[i];
931 cfg->update(cfg->io, mod);
936 static int __rsnd_kctrl_new(struct rsnd_mod *mod,
937 struct rsnd_dai_stream *io,
938 struct snd_soc_pcm_runtime *rtd,
939 const unsigned char *name,
940 struct rsnd_kctrl_cfg *cfg,
941 void (*update)(struct rsnd_dai_stream *io,
942 struct rsnd_mod *mod))
944 struct snd_card *card = rtd->card->snd_card;
945 struct snd_kcontrol *kctrl;
946 struct snd_kcontrol_new knew = {
947 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
949 .info = rsnd_kctrl_info,
951 .get = rsnd_kctrl_get,
952 .put = rsnd_kctrl_put,
953 .private_value = (unsigned long)cfg,
957 kctrl = snd_ctl_new1(&knew, mod);
961 ret = snd_ctl_add(card, kctrl);
963 snd_ctl_free_one(kctrl);
967 cfg->update = update;
975 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg)
977 snd_ctl_remove(cfg->card, cfg->kctrl);
980 int rsnd_kctrl_new_m(struct rsnd_mod *mod,
981 struct rsnd_dai_stream *io,
982 struct snd_soc_pcm_runtime *rtd,
983 const unsigned char *name,
984 void (*update)(struct rsnd_dai_stream *io,
985 struct rsnd_mod *mod),
986 struct rsnd_kctrl_cfg_m *_cfg,
990 if (ch_size > RSND_DVC_CHANNELS)
994 _cfg->cfg.size = ch_size;
995 _cfg->cfg.val = _cfg->val;
996 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
999 int rsnd_kctrl_new_s(struct rsnd_mod *mod,
1000 struct rsnd_dai_stream *io,
1001 struct snd_soc_pcm_runtime *rtd,
1002 const unsigned char *name,
1003 void (*update)(struct rsnd_dai_stream *io,
1004 struct rsnd_mod *mod),
1005 struct rsnd_kctrl_cfg_s *_cfg,
1008 _cfg->cfg.max = max;
1010 _cfg->cfg.val = &_cfg->val;
1011 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1014 int rsnd_kctrl_new_e(struct rsnd_mod *mod,
1015 struct rsnd_dai_stream *io,
1016 struct snd_soc_pcm_runtime *rtd,
1017 const unsigned char *name,
1018 struct rsnd_kctrl_cfg_s *_cfg,
1019 void (*update)(struct rsnd_dai_stream *io,
1020 struct rsnd_mod *mod),
1021 const char * const *texts,
1024 _cfg->cfg.max = max;
1026 _cfg->cfg.val = &_cfg->val;
1027 _cfg->cfg.texts = texts;
1028 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1035 #define PREALLOC_BUFFER (32 * 1024)
1036 #define PREALLOC_BUFFER_MAX (32 * 1024)
1038 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1040 struct snd_soc_dai *dai = rtd->cpu_dai;
1041 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1044 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1048 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1052 return snd_pcm_lib_preallocate_pages_for_all(
1055 rtd->card->snd_card->dev,
1056 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1059 static struct snd_soc_platform_driver rsnd_soc_platform = {
1060 .ops = &rsnd_pcm_ops,
1061 .pcm_new = rsnd_pcm_new,
1064 static const struct snd_soc_component_driver rsnd_soc_component = {
1068 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1069 struct rsnd_dai_stream *io)
1073 ret = rsnd_dai_call(probe, io, priv);
1074 if (ret == -EAGAIN) {
1075 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1079 * Fallback to PIO mode
1083 * call "remove" for SSI/SRC/DVC
1084 * SSI will be switch to PIO mode if it was DMA mode
1087 * rsnd_ssi_fallback()
1089 rsnd_dai_call(remove, io, priv);
1092 * remove all mod from io
1093 * and, re connect ssi
1095 for (i = 0; i < RSND_MOD_MAX; i++)
1096 rsnd_dai_disconnect((io)->mod[i], io, i);
1097 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1102 rsnd_dai_call(fallback, io, priv);
1106 * DAI has SSI which is PIO mode only now.
1108 ret = rsnd_dai_call(probe, io, priv);
1117 static int rsnd_probe(struct platform_device *pdev)
1119 struct rsnd_priv *priv;
1120 struct device *dev = &pdev->dev;
1121 struct rsnd_dai *rdai;
1122 const struct of_device_id *of_id = of_match_device(rsnd_of_match, dev);
1123 int (*probe_func[])(struct rsnd_priv *priv) = {
1141 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1143 dev_err(dev, "priv allocate failed\n");
1148 priv->flags = (unsigned long)of_id->data;
1149 spin_lock_init(&priv->lock);
1154 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1155 ret = probe_func[i](priv);
1160 for_each_rsnd_dai(rdai, priv, i) {
1161 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1163 goto exit_snd_probe;
1165 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1167 goto exit_snd_probe;
1170 dev_set_drvdata(dev, priv);
1175 ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1177 dev_err(dev, "cannot snd soc register\n");
1181 ret = snd_soc_register_component(dev, &rsnd_soc_component,
1182 priv->daidrv, rsnd_rdai_nr(priv));
1184 dev_err(dev, "cannot snd dai register\n");
1188 pm_runtime_enable(dev);
1190 dev_info(dev, "probed\n");
1194 snd_soc_unregister_platform(dev);
1196 for_each_rsnd_dai(rdai, priv, i) {
1197 rsnd_dai_call(remove, &rdai->playback, priv);
1198 rsnd_dai_call(remove, &rdai->capture, priv);
1204 static int rsnd_remove(struct platform_device *pdev)
1206 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1207 struct rsnd_dai *rdai;
1208 void (*remove_func[])(struct rsnd_priv *priv) = {
1220 pm_runtime_disable(&pdev->dev);
1222 for_each_rsnd_dai(rdai, priv, i) {
1223 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1224 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1227 for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1228 remove_func[i](priv);
1230 snd_soc_unregister_component(&pdev->dev);
1231 snd_soc_unregister_platform(&pdev->dev);
1236 static struct platform_driver rsnd_driver = {
1238 .name = "rcar_sound",
1239 .of_match_table = rsnd_of_match,
1241 .probe = rsnd_probe,
1242 .remove = rsnd_remove,
1244 module_platform_driver(rsnd_driver);
1246 MODULE_LICENSE("GPL");
1247 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1248 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1249 MODULE_ALIAS("platform:rcar-pcm-audio");