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);
114 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
116 if (mod->type != type) {
117 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
118 struct device *dev = rsnd_priv_to_dev(priv);
120 dev_warn(dev, "%s[%d] is not your expected module\n",
121 rsnd_mod_name(mod), rsnd_mod_id(mod));
126 char *rsnd_mod_name(struct rsnd_mod *mod)
128 if (!mod || !mod->ops)
131 return mod->ops->name;
134 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
135 struct rsnd_mod *mod)
137 if (!mod || !mod->ops || !mod->ops->dma_req)
140 return mod->ops->dma_req(io, mod);
143 u32 *rsnd_mod_get_status(struct rsnd_dai_stream *io,
144 struct rsnd_mod *mod,
145 enum rsnd_mod_type type)
150 int rsnd_mod_init(struct rsnd_priv *priv,
151 struct rsnd_mod *mod,
152 struct rsnd_mod_ops *ops,
154 u32* (*get_status)(struct rsnd_dai_stream *io,
155 struct rsnd_mod *mod,
156 enum rsnd_mod_type type),
157 enum rsnd_mod_type type,
160 int ret = clk_prepare(clk);
170 mod->get_status = get_status;
175 void rsnd_mod_quit(struct rsnd_mod *mod)
178 clk_unprepare(mod->clk);
182 void rsnd_mod_interrupt(struct rsnd_mod *mod,
183 void (*callback)(struct rsnd_mod *mod,
184 struct rsnd_dai_stream *io))
186 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
187 struct rsnd_dai_stream *io;
188 struct rsnd_dai *rdai;
191 for_each_rsnd_dai(rdai, priv, i) {
192 io = &rdai->playback;
193 if (mod == io->mod[mod->type])
197 if (mod == io->mod[mod->type])
202 int rsnd_io_is_working(struct rsnd_dai_stream *io)
204 /* see rsnd_dai_stream_init/quit() */
205 return !!io->substream;
208 void rsnd_set_slot(struct rsnd_dai *rdai,
212 rdai->slots_num = num;
215 int rsnd_get_slot(struct rsnd_dai_stream *io)
217 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
222 int rsnd_get_slot_num(struct rsnd_dai_stream *io)
224 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
226 return rdai->slots_num;
229 int rsnd_runtime_channel_original(struct rsnd_dai_stream *io)
231 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
233 return runtime->channels;
236 int rsnd_runtime_channel_after_ctu(struct rsnd_dai_stream *io)
238 int chan = rsnd_runtime_channel_original(io);
239 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io);
242 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod);
245 return converted_chan;
251 int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io)
253 int chan = rsnd_io_is_play(io) ?
254 rsnd_runtime_channel_after_ctu(io) :
255 rsnd_runtime_channel_original(io);
258 if (rsnd_runtime_is_ssi_multi(io))
259 chan /= rsnd_get_slot_num(io);
261 /* TDM Extend Mode needs 8ch */
268 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io)
270 int slots = rsnd_get_slot_num(io);
271 int chan = rsnd_io_is_play(io) ?
272 rsnd_runtime_channel_after_ctu(io) :
273 rsnd_runtime_channel_original(io);
275 return (chan >= 6) && (slots > 1);
278 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io)
280 return rsnd_runtime_channel_for_ssi(io) >= 6;
286 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
288 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
289 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
290 struct device *dev = rsnd_priv_to_dev(priv);
292 switch (runtime->sample_bits) {
299 dev_warn(dev, "not supported sample bits\n");
307 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
309 struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
310 struct rsnd_mod *target;
311 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
312 u32 val = 0x76543210;
315 if (rsnd_io_is_play(io)) {
316 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
318 target = src ? src : ssi;
320 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
322 target = cmd ? cmd : ssi;
325 mask <<= runtime->channels * 4;
328 switch (runtime->sample_bits) {
330 val |= 0x67452301 & ~mask;
333 val |= 0x76543210 & ~mask;
338 * exchange channeles on SRC if possible,
339 * otherwise, R/L volume settings on DVC
340 * changes inverted channels
351 #define rsnd_mod_call(idx, io, func, param...) \
353 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \
354 struct rsnd_mod *mod = (io)->mod[idx]; \
355 struct device *dev = rsnd_priv_to_dev(priv); \
356 u32 *status = mod->get_status(io, mod, idx); \
357 u32 mask = 0xF << __rsnd_mod_shift_##func; \
358 u8 val = (*status >> __rsnd_mod_shift_##func) & 0xF; \
359 u8 add = ((val + __rsnd_mod_add_##func) & 0xF); \
361 int call = (val == __rsnd_mod_call_##func) && (mod)->ops->func; \
365 *status = (*status & ~mask) + \
366 (add << __rsnd_mod_shift_##func); \
367 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \
368 rsnd_mod_name(mod), rsnd_mod_id(mod), \
369 *status, call ? #func : ""); \
371 ret = (mod)->ops->func(mod, io, param); \
373 dev_dbg(dev, "%s[%d] : rsnd_mod_call error %d\n", \
374 rsnd_mod_name(mod), rsnd_mod_id(mod), ret); \
378 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
412 #define rsnd_dai_call(fn, io, param...) \
414 struct rsnd_mod *mod; \
415 int type, is_play = rsnd_io_is_play(io); \
417 for (i = 0; i < RSND_MOD_MAX; i++) { \
418 type = rsnd_mod_sequence[is_play][i]; \
419 mod = (io)->mod[type]; \
422 ret |= rsnd_mod_call(type, io, fn, param); \
427 int rsnd_dai_connect(struct rsnd_mod *mod,
428 struct rsnd_dai_stream *io,
429 enum rsnd_mod_type type)
431 struct rsnd_priv *priv;
437 if (io->mod[type] == mod)
443 priv = rsnd_mod_to_priv(mod);
444 dev = rsnd_priv_to_dev(priv);
448 dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
449 rsnd_mod_name(mod), rsnd_mod_id(mod),
450 rsnd_io_is_play(io) ? "Playback" : "Capture");
455 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
456 struct rsnd_dai_stream *io,
457 enum rsnd_mod_type type)
459 io->mod[type] = NULL;
462 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
464 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
467 return priv->rdai + id;
470 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
471 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
473 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
475 return rsnd_rdai_get(priv, dai->id);
479 * rsnd_soc_dai functions
481 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
483 struct snd_pcm_substream *substream = io->substream;
484 struct snd_pcm_runtime *runtime = substream->runtime;
485 int pos = io->byte_pos + additional;
487 pos %= (runtime->periods * io->byte_per_period);
492 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
494 io->byte_pos += byte;
496 if (io->byte_pos >= io->next_period_byte) {
497 struct snd_pcm_substream *substream = io->substream;
498 struct snd_pcm_runtime *runtime = substream->runtime;
501 io->next_period_byte += io->byte_per_period;
503 if (io->period_pos >= runtime->periods) {
506 io->next_period_byte = io->byte_per_period;
515 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
517 struct snd_pcm_substream *substream = io->substream;
520 * this function should be called...
522 * - if rsnd_dai_pointer_update() returns true
523 * - without spin lock
526 snd_pcm_period_elapsed(substream);
529 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
530 struct snd_pcm_substream *substream)
532 struct snd_pcm_runtime *runtime = substream->runtime;
534 io->substream = substream;
537 io->byte_per_period = runtime->period_size *
539 samples_to_bytes(runtime, 1);
540 io->next_period_byte = io->byte_per_period;
543 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
545 io->substream = NULL;
549 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
551 struct snd_soc_pcm_runtime *rtd = substream->private_data;
557 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
558 struct snd_pcm_substream *substream)
560 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
561 return &rdai->playback;
563 return &rdai->capture;
566 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
567 struct snd_soc_dai *dai)
569 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
570 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
571 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
575 spin_lock_irqsave(&priv->lock, flags);
578 case SNDRV_PCM_TRIGGER_START:
579 case SNDRV_PCM_TRIGGER_RESUME:
580 rsnd_dai_stream_init(io, substream);
582 ret = rsnd_dai_call(init, io, priv);
584 goto dai_trigger_end;
586 ret = rsnd_dai_call(start, io, priv);
588 goto dai_trigger_end;
590 ret = rsnd_dai_call(irq, io, priv, 1);
592 goto dai_trigger_end;
595 case SNDRV_PCM_TRIGGER_STOP:
596 case SNDRV_PCM_TRIGGER_SUSPEND:
597 ret = rsnd_dai_call(irq, io, priv, 0);
599 ret |= rsnd_dai_call(stop, io, priv);
601 ret |= rsnd_dai_call(quit, io, priv);
603 rsnd_dai_stream_quit(io);
610 spin_unlock_irqrestore(&priv->lock, flags);
615 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
617 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
619 /* set master/slave audio interface */
620 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
621 case SND_SOC_DAIFMT_CBM_CFM:
622 rdai->clk_master = 0;
624 case SND_SOC_DAIFMT_CBS_CFS:
625 rdai->clk_master = 1; /* codec is slave, cpu is master */
632 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
633 case SND_SOC_DAIFMT_I2S:
635 rdai->data_alignment = 0;
636 rdai->frm_clk_inv = 0;
638 case SND_SOC_DAIFMT_LEFT_J:
640 rdai->data_alignment = 0;
641 rdai->frm_clk_inv = 1;
643 case SND_SOC_DAIFMT_RIGHT_J:
645 rdai->data_alignment = 1;
646 rdai->frm_clk_inv = 1;
650 /* set clock inversion */
651 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
652 case SND_SOC_DAIFMT_NB_IF:
653 rdai->bit_clk_inv = rdai->bit_clk_inv;
654 rdai->frm_clk_inv = !rdai->frm_clk_inv;
656 case SND_SOC_DAIFMT_IB_NF:
657 rdai->bit_clk_inv = !rdai->bit_clk_inv;
658 rdai->frm_clk_inv = rdai->frm_clk_inv;
660 case SND_SOC_DAIFMT_IB_IF:
661 rdai->bit_clk_inv = !rdai->bit_clk_inv;
662 rdai->frm_clk_inv = !rdai->frm_clk_inv;
664 case SND_SOC_DAIFMT_NB_NF:
672 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
673 u32 tx_mask, u32 rx_mask,
674 int slots, int slot_width)
676 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
677 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
678 struct device *dev = rsnd_priv_to_dev(priv);
682 /* TDM Extend Mode */
683 rsnd_set_slot(rdai, slots, 1);
686 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
693 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
694 .trigger = rsnd_soc_dai_trigger,
695 .set_fmt = rsnd_soc_dai_set_fmt,
696 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot,
699 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
700 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
701 struct device_node *node,
702 struct device_node *playback,
703 struct device_node *capture)
705 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
706 struct device_node *np;
707 struct rsnd_mod *mod;
714 for_each_child_of_node(node, np) {
715 mod = mod_get(priv, i);
717 rsnd_dai_connect(mod, &rdai->playback, mod->type);
719 rsnd_dai_connect(mod, &rdai->capture, mod->type);
726 static int rsnd_dai_probe(struct rsnd_priv *priv)
728 struct device_node *dai_node;
729 struct device_node *dai_np;
730 struct device_node *playback, *capture;
731 struct rsnd_dai_stream *io_playback;
732 struct rsnd_dai_stream *io_capture;
733 struct snd_soc_dai_driver *rdrv, *drv;
734 struct rsnd_dai *rdai;
735 struct device *dev = rsnd_priv_to_dev(priv);
739 dai_node = rsnd_dai_of_node(priv);
740 nr = of_get_child_count(dai_node);
743 goto rsnd_dai_probe_done;
746 rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL);
747 rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL);
748 if (!rdrv || !rdai) {
750 goto rsnd_dai_probe_done;
761 for_each_child_of_node(dai_node, dai_np) {
762 rdai = rsnd_rdai_get(priv, dai_i);
764 io_playback = &rdai->playback;
765 io_capture = &rdai->capture;
767 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
770 drv->name = rdai->name;
771 drv->ops = &rsnd_soc_dai_ops;
773 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE,
774 "DAI%d Playback", dai_i);
775 drv->playback.rates = RSND_RATES;
776 drv->playback.formats = RSND_FMTS;
777 drv->playback.channels_min = 2;
778 drv->playback.channels_max = 6;
779 drv->playback.stream_name = rdai->playback.name;
781 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
782 "DAI%d Capture", dai_i);
783 drv->capture.rates = RSND_RATES;
784 drv->capture.formats = RSND_FMTS;
785 drv->capture.channels_min = 2;
786 drv->capture.channels_max = 6;
787 drv->capture.stream_name = rdai->capture.name;
789 rdai->playback.rdai = rdai;
790 rdai->capture.rdai = rdai;
791 rsnd_set_slot(rdai, 2, 1); /* default */
793 for (io_i = 0;; io_i++) {
794 playback = of_parse_phandle(dai_np, "playback", io_i);
795 capture = of_parse_phandle(dai_np, "capture", io_i);
797 if (!playback && !capture)
800 rsnd_parse_connect_ssi(rdai, playback, capture);
801 rsnd_parse_connect_src(rdai, playback, capture);
802 rsnd_parse_connect_ctu(rdai, playback, capture);
803 rsnd_parse_connect_mix(rdai, playback, capture);
804 rsnd_parse_connect_dvc(rdai, playback, capture);
806 of_node_put(playback);
807 of_node_put(capture);
812 dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
813 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ",
814 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- ");
820 of_node_put(dai_node);
828 static struct snd_pcm_hardware rsnd_pcm_hardware = {
829 .info = SNDRV_PCM_INFO_INTERLEAVED |
830 SNDRV_PCM_INFO_MMAP |
831 SNDRV_PCM_INFO_MMAP_VALID,
832 .buffer_bytes_max = 64 * 1024,
833 .period_bytes_min = 32,
834 .period_bytes_max = 8192,
840 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
842 struct snd_pcm_runtime *runtime = substream->runtime;
845 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
847 ret = snd_pcm_hw_constraint_integer(runtime,
848 SNDRV_PCM_HW_PARAM_PERIODS);
853 static int rsnd_hw_params(struct snd_pcm_substream *substream,
854 struct snd_pcm_hw_params *hw_params)
856 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
857 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
858 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
861 ret = rsnd_dai_call(hw_params, io, substream, hw_params);
865 return snd_pcm_lib_malloc_pages(substream,
866 params_buffer_bytes(hw_params));
869 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
871 struct snd_pcm_runtime *runtime = substream->runtime;
872 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
873 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
874 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
876 return bytes_to_frames(runtime, io->byte_pos);
879 static struct snd_pcm_ops rsnd_pcm_ops = {
880 .open = rsnd_pcm_open,
881 .ioctl = snd_pcm_lib_ioctl,
882 .hw_params = rsnd_hw_params,
883 .hw_free = snd_pcm_lib_free_pages,
884 .pointer = rsnd_pointer,
890 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
891 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
892 struct snd_ctl_elem_info *uinfo)
894 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
897 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
898 uinfo->count = cfg->size;
899 uinfo->value.enumerated.items = cfg->max;
900 if (uinfo->value.enumerated.item >= cfg->max)
901 uinfo->value.enumerated.item = cfg->max - 1;
902 strlcpy(uinfo->value.enumerated.name,
903 cfg->texts[uinfo->value.enumerated.item],
904 sizeof(uinfo->value.enumerated.name));
906 uinfo->count = cfg->size;
907 uinfo->value.integer.min = 0;
908 uinfo->value.integer.max = cfg->max;
909 uinfo->type = (cfg->max == 1) ?
910 SNDRV_CTL_ELEM_TYPE_BOOLEAN :
911 SNDRV_CTL_ELEM_TYPE_INTEGER;
917 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
918 struct snd_ctl_elem_value *uc)
920 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
923 for (i = 0; i < cfg->size; i++)
925 uc->value.enumerated.item[i] = cfg->val[i];
927 uc->value.integer.value[i] = cfg->val[i];
932 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
933 struct snd_ctl_elem_value *uc)
935 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
936 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
939 for (i = 0; i < cfg->size; i++) {
941 change |= (uc->value.enumerated.item[i] != cfg->val[i]);
942 cfg->val[i] = uc->value.enumerated.item[i];
944 change |= (uc->value.integer.value[i] != cfg->val[i]);
945 cfg->val[i] = uc->value.integer.value[i];
949 if (change && cfg->update)
950 cfg->update(cfg->io, mod);
955 static int __rsnd_kctrl_new(struct rsnd_mod *mod,
956 struct rsnd_dai_stream *io,
957 struct snd_soc_pcm_runtime *rtd,
958 const unsigned char *name,
959 struct rsnd_kctrl_cfg *cfg,
960 void (*update)(struct rsnd_dai_stream *io,
961 struct rsnd_mod *mod))
963 struct snd_card *card = rtd->card->snd_card;
964 struct snd_kcontrol *kctrl;
965 struct snd_kcontrol_new knew = {
966 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
968 .info = rsnd_kctrl_info,
970 .get = rsnd_kctrl_get,
971 .put = rsnd_kctrl_put,
972 .private_value = (unsigned long)cfg,
976 kctrl = snd_ctl_new1(&knew, mod);
980 ret = snd_ctl_add(card, kctrl);
982 snd_ctl_free_one(kctrl);
986 cfg->update = update;
994 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg)
996 snd_ctl_remove(cfg->card, cfg->kctrl);
999 int rsnd_kctrl_new_m(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_m *_cfg,
1009 if (ch_size > RSND_MAX_CHANNELS)
1012 _cfg->cfg.max = max;
1013 _cfg->cfg.size = ch_size;
1014 _cfg->cfg.val = _cfg->val;
1015 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1018 int rsnd_kctrl_new_s(struct rsnd_mod *mod,
1019 struct rsnd_dai_stream *io,
1020 struct snd_soc_pcm_runtime *rtd,
1021 const unsigned char *name,
1022 void (*update)(struct rsnd_dai_stream *io,
1023 struct rsnd_mod *mod),
1024 struct rsnd_kctrl_cfg_s *_cfg,
1027 _cfg->cfg.max = max;
1029 _cfg->cfg.val = &_cfg->val;
1030 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1033 int rsnd_kctrl_new_e(struct rsnd_mod *mod,
1034 struct rsnd_dai_stream *io,
1035 struct snd_soc_pcm_runtime *rtd,
1036 const unsigned char *name,
1037 struct rsnd_kctrl_cfg_s *_cfg,
1038 void (*update)(struct rsnd_dai_stream *io,
1039 struct rsnd_mod *mod),
1040 const char * const *texts,
1043 _cfg->cfg.max = max;
1045 _cfg->cfg.val = &_cfg->val;
1046 _cfg->cfg.texts = texts;
1047 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1054 #define PREALLOC_BUFFER (32 * 1024)
1055 #define PREALLOC_BUFFER_MAX (32 * 1024)
1057 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1059 struct snd_soc_dai *dai = rtd->cpu_dai;
1060 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1063 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1067 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1071 return snd_pcm_lib_preallocate_pages_for_all(
1074 rtd->card->snd_card->dev,
1075 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1078 static struct snd_soc_platform_driver rsnd_soc_platform = {
1079 .ops = &rsnd_pcm_ops,
1080 .pcm_new = rsnd_pcm_new,
1083 static const struct snd_soc_component_driver rsnd_soc_component = {
1087 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1088 struct rsnd_dai_stream *io)
1092 ret = rsnd_dai_call(probe, io, priv);
1093 if (ret == -EAGAIN) {
1094 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1098 * Fallback to PIO mode
1102 * call "remove" for SSI/SRC/DVC
1103 * SSI will be switch to PIO mode if it was DMA mode
1106 * rsnd_ssi_fallback()
1108 rsnd_dai_call(remove, io, priv);
1111 * remove all mod from io
1112 * and, re connect ssi
1114 for (i = 0; i < RSND_MOD_MAX; i++)
1115 rsnd_dai_disconnect((io)->mod[i], io, i);
1116 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1121 rsnd_dai_call(fallback, io, priv);
1125 * DAI has SSI which is PIO mode only now.
1127 ret = rsnd_dai_call(probe, io, priv);
1136 static int rsnd_probe(struct platform_device *pdev)
1138 struct rsnd_priv *priv;
1139 struct device *dev = &pdev->dev;
1140 struct rsnd_dai *rdai;
1141 int (*probe_func[])(struct rsnd_priv *priv) = {
1159 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1161 dev_err(dev, "priv allocate failed\n");
1166 priv->flags = (unsigned long)of_device_get_match_data(dev);
1167 spin_lock_init(&priv->lock);
1172 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1173 ret = probe_func[i](priv);
1178 for_each_rsnd_dai(rdai, priv, i) {
1179 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1181 goto exit_snd_probe;
1183 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1185 goto exit_snd_probe;
1188 dev_set_drvdata(dev, priv);
1193 ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1195 dev_err(dev, "cannot snd soc register\n");
1199 ret = snd_soc_register_component(dev, &rsnd_soc_component,
1200 priv->daidrv, rsnd_rdai_nr(priv));
1202 dev_err(dev, "cannot snd dai register\n");
1206 pm_runtime_enable(dev);
1208 dev_info(dev, "probed\n");
1212 snd_soc_unregister_platform(dev);
1214 for_each_rsnd_dai(rdai, priv, i) {
1215 rsnd_dai_call(remove, &rdai->playback, priv);
1216 rsnd_dai_call(remove, &rdai->capture, priv);
1222 static int rsnd_remove(struct platform_device *pdev)
1224 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1225 struct rsnd_dai *rdai;
1226 void (*remove_func[])(struct rsnd_priv *priv) = {
1238 pm_runtime_disable(&pdev->dev);
1240 for_each_rsnd_dai(rdai, priv, i) {
1241 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1242 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1245 for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1246 remove_func[i](priv);
1248 snd_soc_unregister_component(&pdev->dev);
1249 snd_soc_unregister_platform(&pdev->dev);
1254 static struct platform_driver rsnd_driver = {
1256 .name = "rcar_sound",
1257 .of_match_table = rsnd_of_match,
1259 .probe = rsnd_probe,
1260 .remove = rsnd_remove,
1262 module_platform_driver(rsnd_driver);
1264 MODULE_LICENSE("GPL");
1265 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1266 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1267 MODULE_ALIAS("platform:rcar-pcm-audio");