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_192000
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_runtime_channel_original(struct rsnd_dai_stream *io)
229 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
231 return runtime->channels;
234 int rsnd_runtime_channel_after_ctu(struct rsnd_dai_stream *io)
236 int chan = rsnd_runtime_channel_original(io);
237 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io);
240 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod);
243 return converted_chan;
249 int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io)
251 int chan = rsnd_io_is_play(io) ?
252 rsnd_runtime_channel_after_ctu(io) :
253 rsnd_runtime_channel_original(io);
256 if (rsnd_runtime_is_ssi_multi(io))
257 chan /= rsnd_get_slot_num(io);
259 /* TDM Extend Mode needs 8ch */
266 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io)
268 int slots = rsnd_get_slot_num(io);
269 int chan = rsnd_io_is_play(io) ?
270 rsnd_runtime_channel_after_ctu(io) :
271 rsnd_runtime_channel_original(io);
273 return (chan >= 6) && (slots > 1);
276 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io)
278 return rsnd_runtime_channel_for_ssi(io) >= 6;
284 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
286 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
287 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
288 struct device *dev = rsnd_priv_to_dev(priv);
290 switch (runtime->sample_bits) {
297 dev_warn(dev, "not supported sample bits\n");
305 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
307 struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io);
308 struct rsnd_mod *target;
309 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
310 u32 val = 0x76543210;
313 if (rsnd_io_is_play(io)) {
314 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
316 target = src ? src : ssiu;
318 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
320 target = cmd ? cmd : ssiu;
323 mask <<= runtime->channels * 4;
326 switch (runtime->sample_bits) {
328 val |= 0x67452301 & ~mask;
331 val |= 0x76543210 & ~mask;
336 * exchange channeles on SRC if possible,
337 * otherwise, R/L volume settings on DVC
338 * changes inverted channels
349 struct rsnd_mod *rsnd_mod_next(int *iterator,
350 struct rsnd_dai_stream *io,
351 enum rsnd_mod_type *array,
354 struct rsnd_mod *mod;
355 enum rsnd_mod_type type;
356 int max = array ? array_size : RSND_MOD_MAX;
358 for (; *iterator < max; (*iterator)++) {
359 type = (array) ? array[*iterator] : *iterator;
370 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
404 static int rsnd_status_update(u32 *status,
405 int shift, int add, int timing)
407 u32 mask = 0xF << shift;
408 u8 val = (*status >> shift) & 0xF;
409 u8 next_val = (val + add) & 0xF;
410 int func_call = (val == timing);
412 if (next_val == 0xF) /* underflow case */
415 *status = (*status & ~mask) + (next_val << shift);
420 #define rsnd_dai_call(fn, io, param...) \
422 struct rsnd_priv *priv = rsnd_io_to_priv(io); \
423 struct device *dev = rsnd_priv_to_dev(priv); \
424 struct rsnd_mod *mod; \
425 int is_play = rsnd_io_is_play(io); \
427 enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \
428 for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \
430 u32 *status = mod->get_status(io, mod, types[i]); \
431 int func_call = rsnd_status_update(status, \
432 __rsnd_mod_shift_##fn, \
433 __rsnd_mod_add_##fn, \
434 __rsnd_mod_call_##fn); \
435 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \
436 rsnd_mod_name(mod), rsnd_mod_id(mod), *status, \
437 (func_call && (mod)->ops->fn) ? #fn : ""); \
438 if (func_call && (mod)->ops->fn) \
439 tmp = (mod)->ops->fn(mod, io, param); \
441 dev_err(dev, "%s[%d] : %s error %d\n", \
442 rsnd_mod_name(mod), rsnd_mod_id(mod), \
449 int rsnd_dai_connect(struct rsnd_mod *mod,
450 struct rsnd_dai_stream *io,
451 enum rsnd_mod_type type)
453 struct rsnd_priv *priv;
459 if (io->mod[type] == mod)
465 priv = rsnd_mod_to_priv(mod);
466 dev = rsnd_priv_to_dev(priv);
470 dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
471 rsnd_mod_name(mod), rsnd_mod_id(mod),
472 rsnd_io_is_play(io) ? "Playback" : "Capture");
477 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
478 struct rsnd_dai_stream *io,
479 enum rsnd_mod_type type)
481 io->mod[type] = NULL;
484 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
486 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
489 return priv->rdai + id;
492 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
493 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
495 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
497 return rsnd_rdai_get(priv, dai->id);
501 * rsnd_soc_dai functions
503 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
505 struct snd_pcm_substream *substream = io->substream;
506 struct snd_pcm_runtime *runtime = substream->runtime;
507 int pos = io->byte_pos + additional;
509 pos %= (runtime->periods * io->byte_per_period);
514 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
516 io->byte_pos += byte;
518 if (io->byte_pos >= io->next_period_byte) {
519 struct snd_pcm_substream *substream = io->substream;
520 struct snd_pcm_runtime *runtime = substream->runtime;
523 io->next_period_byte += io->byte_per_period;
525 if (io->period_pos >= runtime->periods) {
528 io->next_period_byte = io->byte_per_period;
537 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
539 struct snd_pcm_substream *substream = io->substream;
542 * this function should be called...
544 * - if rsnd_dai_pointer_update() returns true
545 * - without spin lock
548 snd_pcm_period_elapsed(substream);
551 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
552 struct snd_pcm_substream *substream)
554 struct snd_pcm_runtime *runtime = substream->runtime;
556 io->substream = substream;
559 io->byte_per_period = runtime->period_size *
561 samples_to_bytes(runtime, 1);
562 io->next_period_byte = io->byte_per_period;
565 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
567 io->substream = NULL;
571 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
573 struct snd_soc_pcm_runtime *rtd = substream->private_data;
579 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
580 struct snd_pcm_substream *substream)
582 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
583 return &rdai->playback;
585 return &rdai->capture;
588 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
589 struct snd_soc_dai *dai)
591 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
592 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
593 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
597 spin_lock_irqsave(&priv->lock, flags);
600 case SNDRV_PCM_TRIGGER_START:
601 case SNDRV_PCM_TRIGGER_RESUME:
602 rsnd_dai_stream_init(io, substream);
604 ret = rsnd_dai_call(init, io, priv);
606 goto dai_trigger_end;
608 ret = rsnd_dai_call(start, io, priv);
610 goto dai_trigger_end;
612 ret = rsnd_dai_call(irq, io, priv, 1);
614 goto dai_trigger_end;
617 case SNDRV_PCM_TRIGGER_STOP:
618 case SNDRV_PCM_TRIGGER_SUSPEND:
619 ret = rsnd_dai_call(irq, io, priv, 0);
621 ret |= rsnd_dai_call(stop, io, priv);
623 ret |= rsnd_dai_call(quit, io, priv);
625 rsnd_dai_stream_quit(io);
632 spin_unlock_irqrestore(&priv->lock, flags);
637 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
639 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
641 /* set master/slave audio interface */
642 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
643 case SND_SOC_DAIFMT_CBM_CFM:
644 rdai->clk_master = 0;
646 case SND_SOC_DAIFMT_CBS_CFS:
647 rdai->clk_master = 1; /* codec is slave, cpu is master */
654 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
655 case SND_SOC_DAIFMT_I2S:
657 rdai->data_alignment = 0;
658 rdai->frm_clk_inv = 0;
660 case SND_SOC_DAIFMT_LEFT_J:
662 rdai->data_alignment = 0;
663 rdai->frm_clk_inv = 1;
665 case SND_SOC_DAIFMT_RIGHT_J:
667 rdai->data_alignment = 1;
668 rdai->frm_clk_inv = 1;
672 /* set clock inversion */
673 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
674 case SND_SOC_DAIFMT_NB_IF:
675 rdai->frm_clk_inv = !rdai->frm_clk_inv;
677 case SND_SOC_DAIFMT_IB_NF:
678 rdai->bit_clk_inv = !rdai->bit_clk_inv;
680 case SND_SOC_DAIFMT_IB_IF:
681 rdai->bit_clk_inv = !rdai->bit_clk_inv;
682 rdai->frm_clk_inv = !rdai->frm_clk_inv;
684 case SND_SOC_DAIFMT_NB_NF:
692 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
693 u32 tx_mask, u32 rx_mask,
694 int slots, int slot_width)
696 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
697 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
698 struct device *dev = rsnd_priv_to_dev(priv);
702 /* TDM Extend Mode */
703 rsnd_set_slot(rdai, slots, 1);
706 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
713 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
714 struct snd_soc_dai *dai)
716 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
717 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
720 * call rsnd_dai_call without spinlock
722 return rsnd_dai_call(nolock_start, io, priv);
725 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
726 struct snd_soc_dai *dai)
728 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
729 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
732 * call rsnd_dai_call without spinlock
734 rsnd_dai_call(nolock_stop, io, priv);
737 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
738 .startup = rsnd_soc_dai_startup,
739 .shutdown = rsnd_soc_dai_shutdown,
740 .trigger = rsnd_soc_dai_trigger,
741 .set_fmt = rsnd_soc_dai_set_fmt,
742 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot,
745 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
746 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
747 struct device_node *node,
748 struct device_node *playback,
749 struct device_node *capture)
751 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
752 struct device_node *np;
753 struct rsnd_mod *mod;
760 for_each_child_of_node(node, np) {
761 mod = mod_get(priv, i);
763 rsnd_dai_connect(mod, &rdai->playback, mod->type);
765 rsnd_dai_connect(mod, &rdai->capture, mod->type);
772 static int rsnd_dai_probe(struct rsnd_priv *priv)
774 struct device_node *dai_node;
775 struct device_node *dai_np;
776 struct device_node *playback, *capture;
777 struct rsnd_dai_stream *io_playback;
778 struct rsnd_dai_stream *io_capture;
779 struct snd_soc_dai_driver *rdrv, *drv;
780 struct rsnd_dai *rdai;
781 struct device *dev = rsnd_priv_to_dev(priv);
785 dai_node = rsnd_dai_of_node(priv);
786 nr = of_get_child_count(dai_node);
789 goto rsnd_dai_probe_done;
792 rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL);
793 rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL);
794 if (!rdrv || !rdai) {
796 goto rsnd_dai_probe_done;
807 for_each_child_of_node(dai_node, dai_np) {
808 rdai = rsnd_rdai_get(priv, dai_i);
810 io_playback = &rdai->playback;
811 io_capture = &rdai->capture;
813 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
816 drv->name = rdai->name;
817 drv->ops = &rsnd_soc_dai_ops;
819 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE,
820 "DAI%d Playback", dai_i);
821 drv->playback.rates = RSND_RATES;
822 drv->playback.formats = RSND_FMTS;
823 drv->playback.channels_min = 2;
824 drv->playback.channels_max = 6;
825 drv->playback.stream_name = rdai->playback.name;
827 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
828 "DAI%d Capture", dai_i);
829 drv->capture.rates = RSND_RATES;
830 drv->capture.formats = RSND_FMTS;
831 drv->capture.channels_min = 2;
832 drv->capture.channels_max = 6;
833 drv->capture.stream_name = rdai->capture.name;
835 rdai->playback.rdai = rdai;
836 rdai->capture.rdai = rdai;
837 rsnd_set_slot(rdai, 2, 1); /* default */
839 for (io_i = 0;; io_i++) {
840 playback = of_parse_phandle(dai_np, "playback", io_i);
841 capture = of_parse_phandle(dai_np, "capture", io_i);
843 if (!playback && !capture)
846 rsnd_parse_connect_ssi(rdai, playback, capture);
847 rsnd_parse_connect_src(rdai, playback, capture);
848 rsnd_parse_connect_ctu(rdai, playback, capture);
849 rsnd_parse_connect_mix(rdai, playback, capture);
850 rsnd_parse_connect_dvc(rdai, playback, capture);
852 of_node_put(playback);
853 of_node_put(capture);
858 dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
859 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ",
860 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- ");
866 of_node_put(dai_node);
874 static struct snd_pcm_hardware rsnd_pcm_hardware = {
875 .info = SNDRV_PCM_INFO_INTERLEAVED |
876 SNDRV_PCM_INFO_MMAP |
877 SNDRV_PCM_INFO_MMAP_VALID,
878 .buffer_bytes_max = 64 * 1024,
879 .period_bytes_min = 32,
880 .period_bytes_max = 8192,
886 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
888 struct snd_pcm_runtime *runtime = substream->runtime;
891 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
893 ret = snd_pcm_hw_constraint_integer(runtime,
894 SNDRV_PCM_HW_PARAM_PERIODS);
899 static int rsnd_hw_params(struct snd_pcm_substream *substream,
900 struct snd_pcm_hw_params *hw_params)
902 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
903 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
904 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
907 ret = rsnd_dai_call(hw_params, io, substream, hw_params);
911 return snd_pcm_lib_malloc_pages(substream,
912 params_buffer_bytes(hw_params));
915 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
917 struct snd_pcm_runtime *runtime = substream->runtime;
918 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
919 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
920 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
922 return bytes_to_frames(runtime, io->byte_pos);
925 static struct snd_pcm_ops rsnd_pcm_ops = {
926 .open = rsnd_pcm_open,
927 .ioctl = snd_pcm_lib_ioctl,
928 .hw_params = rsnd_hw_params,
929 .hw_free = snd_pcm_lib_free_pages,
930 .pointer = rsnd_pointer,
936 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
937 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
938 struct snd_ctl_elem_info *uinfo)
940 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
943 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
944 uinfo->count = cfg->size;
945 uinfo->value.enumerated.items = cfg->max;
946 if (uinfo->value.enumerated.item >= cfg->max)
947 uinfo->value.enumerated.item = cfg->max - 1;
948 strlcpy(uinfo->value.enumerated.name,
949 cfg->texts[uinfo->value.enumerated.item],
950 sizeof(uinfo->value.enumerated.name));
952 uinfo->count = cfg->size;
953 uinfo->value.integer.min = 0;
954 uinfo->value.integer.max = cfg->max;
955 uinfo->type = (cfg->max == 1) ?
956 SNDRV_CTL_ELEM_TYPE_BOOLEAN :
957 SNDRV_CTL_ELEM_TYPE_INTEGER;
963 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
964 struct snd_ctl_elem_value *uc)
966 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
969 for (i = 0; i < cfg->size; i++)
971 uc->value.enumerated.item[i] = cfg->val[i];
973 uc->value.integer.value[i] = cfg->val[i];
978 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
979 struct snd_ctl_elem_value *uc)
981 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
982 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
985 for (i = 0; i < cfg->size; i++) {
987 change |= (uc->value.enumerated.item[i] != cfg->val[i]);
988 cfg->val[i] = uc->value.enumerated.item[i];
990 change |= (uc->value.integer.value[i] != cfg->val[i]);
991 cfg->val[i] = uc->value.integer.value[i];
995 if (change && cfg->update)
996 cfg->update(cfg->io, mod);
1001 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg)
1003 cfg->cfg.val = cfg->val;
1008 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg)
1010 cfg->cfg.val = &cfg->val;
1015 int rsnd_kctrl_new(struct rsnd_mod *mod,
1016 struct rsnd_dai_stream *io,
1017 struct snd_soc_pcm_runtime *rtd,
1018 const unsigned char *name,
1019 void (*update)(struct rsnd_dai_stream *io,
1020 struct rsnd_mod *mod),
1021 struct rsnd_kctrl_cfg *cfg,
1022 const char * const *texts,
1026 struct snd_card *card = rtd->card->snd_card;
1027 struct snd_kcontrol *kctrl;
1028 struct snd_kcontrol_new knew = {
1029 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1031 .info = rsnd_kctrl_info,
1033 .get = rsnd_kctrl_get,
1034 .put = rsnd_kctrl_put,
1035 .private_value = (unsigned long)cfg,
1039 if (size > RSND_MAX_CHANNELS)
1042 kctrl = snd_ctl_new1(&knew, mod);
1046 ret = snd_ctl_add(card, kctrl);
1053 cfg->update = update;
1065 #define PREALLOC_BUFFER (32 * 1024)
1066 #define PREALLOC_BUFFER_MAX (32 * 1024)
1068 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1070 struct snd_soc_dai *dai = rtd->cpu_dai;
1071 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1074 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1078 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1082 return snd_pcm_lib_preallocate_pages_for_all(
1084 SNDRV_DMA_TYPE_CONTINUOUS,
1085 snd_dma_continuous_data(GFP_KERNEL),
1086 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1089 static struct snd_soc_platform_driver rsnd_soc_platform = {
1090 .ops = &rsnd_pcm_ops,
1091 .pcm_new = rsnd_pcm_new,
1094 static const struct snd_soc_component_driver rsnd_soc_component = {
1098 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1099 struct rsnd_dai_stream *io)
1103 ret = rsnd_dai_call(probe, io, priv);
1104 if (ret == -EAGAIN) {
1105 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1106 struct rsnd_mod *mod;
1110 * Fallback to PIO mode
1114 * call "remove" for SSI/SRC/DVC
1115 * SSI will be switch to PIO mode if it was DMA mode
1118 * rsnd_ssi_fallback()
1120 rsnd_dai_call(remove, io, priv);
1123 * remove all mod from io
1124 * and, re connect ssi
1126 for_each_rsnd_mod(i, mod, io)
1127 rsnd_dai_disconnect(mod, io, i);
1128 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1133 rsnd_dai_call(fallback, io, priv);
1137 * DAI has SSI which is PIO mode only now.
1139 ret = rsnd_dai_call(probe, io, priv);
1148 static int rsnd_probe(struct platform_device *pdev)
1150 struct rsnd_priv *priv;
1151 struct device *dev = &pdev->dev;
1152 struct rsnd_dai *rdai;
1153 int (*probe_func[])(struct rsnd_priv *priv) = {
1171 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1173 dev_err(dev, "priv allocate failed\n");
1178 priv->flags = (unsigned long)of_device_get_match_data(dev);
1179 spin_lock_init(&priv->lock);
1184 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1185 ret = probe_func[i](priv);
1190 for_each_rsnd_dai(rdai, priv, i) {
1191 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1193 goto exit_snd_probe;
1195 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1197 goto exit_snd_probe;
1200 dev_set_drvdata(dev, priv);
1205 ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1207 dev_err(dev, "cannot snd soc register\n");
1211 ret = snd_soc_register_component(dev, &rsnd_soc_component,
1212 priv->daidrv, rsnd_rdai_nr(priv));
1214 dev_err(dev, "cannot snd dai register\n");
1218 pm_runtime_enable(dev);
1220 dev_info(dev, "probed\n");
1224 snd_soc_unregister_platform(dev);
1226 for_each_rsnd_dai(rdai, priv, i) {
1227 rsnd_dai_call(remove, &rdai->playback, priv);
1228 rsnd_dai_call(remove, &rdai->capture, priv);
1234 static int rsnd_remove(struct platform_device *pdev)
1236 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1237 struct rsnd_dai *rdai;
1238 void (*remove_func[])(struct rsnd_priv *priv) = {
1250 pm_runtime_disable(&pdev->dev);
1252 for_each_rsnd_dai(rdai, priv, i) {
1253 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1254 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1257 for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1258 remove_func[i](priv);
1260 snd_soc_unregister_component(&pdev->dev);
1261 snd_soc_unregister_platform(&pdev->dev);
1266 static int rsnd_suspend(struct device *dev)
1268 struct rsnd_priv *priv = dev_get_drvdata(dev);
1270 rsnd_adg_clk_disable(priv);
1275 static int rsnd_resume(struct device *dev)
1277 struct rsnd_priv *priv = dev_get_drvdata(dev);
1279 rsnd_adg_clk_enable(priv);
1284 static struct dev_pm_ops rsnd_pm_ops = {
1285 .suspend = rsnd_suspend,
1286 .resume = rsnd_resume,
1289 static struct platform_driver rsnd_driver = {
1291 .name = "rcar_sound",
1293 .of_match_table = rsnd_of_match,
1295 .probe = rsnd_probe,
1296 .remove = rsnd_remove,
1298 module_platform_driver(rsnd_driver);
1300 MODULE_LICENSE("GPL");
1301 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1302 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1303 MODULE_ALIAS("platform:rcar-pcm-audio");