1 // SPDX-License-Identifier: GPL-2.0
3 // Renesas R-Car SRU/SCU/SSIU/SSI support
5 // Copyright (C) 2013 Renesas Solutions Corp.
6 // Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
9 // Kuninori Morimoto <morimoto.kuninori@renesas.com>
12 * Renesas R-Car sound device structure
16 * SRU : Sound Routing Unit
17 * - SRC : Sampling Rate Converter
19 * - CTU : Channel Count Conversion Unit
21 * - DVC : Digital Volume and Mute Function
22 * - SSI : Serial Sound Interface
26 * SCU : Sampling Rate Converter Unit
27 * - SRC : Sampling Rate Converter
29 * - CTU : Channel Count Conversion Unit
31 * - DVC : Digital Volume and Mute Function
32 * SSIU : Serial Sound Interface Unit
33 * - SSI : Serial Sound Interface
41 * | ** this depends on Gen1/Gen2
45 * | ** these depend on data path
46 * | ** gen and platform data control it
50 * | +- playback -> [mod] -> [mod] -> [mod] -> ...
53 * | +- capture -> [mod] -> [mod] -> [mod] -> ...
57 * | +- playback -> [mod] -> [mod] -> [mod] -> ...
60 * | +- capture -> [mod] -> [mod] -> [mod] -> ...
63 * | ** these control ssi
72 * | ** these control src
82 * for_each_rsnd_dai(xx, priv, xx)
83 * rdai[0] => rdai[1] => rdai[2] => ...
85 * for_each_rsnd_mod(xx, rdai, xx)
86 * [mod] => [mod] => [mod] => ...
88 * rsnd_dai_call(xxx, fn )
89 * [mod]->fn() -> [mod]->fn() -> [mod]->fn()...
94 * you can enable below define if you don't need
95 * DAI status debug message when debugging
96 * see rsnd_dbg_dai_call()
98 * #define RSND_DEBUG_NO_DAI_CALL 1
101 #include <linux/pm_runtime.h>
104 #define RSND_RATES SNDRV_PCM_RATE_8000_192000
105 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
107 static const struct of_device_id rsnd_of_match[] = {
108 { .compatible = "renesas,rcar_sound-gen1", .data = (void *)RSND_GEN1 },
109 { .compatible = "renesas,rcar_sound-gen2", .data = (void *)RSND_GEN2 },
110 { .compatible = "renesas,rcar_sound-gen3", .data = (void *)RSND_GEN3 },
113 MODULE_DEVICE_TABLE(of, rsnd_of_match);
118 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
120 if (mod->type != type) {
121 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
122 struct device *dev = rsnd_priv_to_dev(priv);
124 dev_warn(dev, "%s[%d] is not your expected module\n",
125 rsnd_mod_name(mod), rsnd_mod_id(mod));
129 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
130 struct rsnd_mod *mod)
132 if (!mod || !mod->ops || !mod->ops->dma_req)
135 return mod->ops->dma_req(io, mod);
138 u32 *rsnd_mod_get_status(struct rsnd_dai_stream *io,
139 struct rsnd_mod *mod,
140 enum rsnd_mod_type type)
145 int rsnd_mod_init(struct rsnd_priv *priv,
146 struct rsnd_mod *mod,
147 struct rsnd_mod_ops *ops,
149 u32* (*get_status)(struct rsnd_dai_stream *io,
150 struct rsnd_mod *mod,
151 enum rsnd_mod_type type),
152 enum rsnd_mod_type type,
155 int ret = clk_prepare(clk);
165 mod->get_status = get_status;
170 void rsnd_mod_quit(struct rsnd_mod *mod)
172 clk_unprepare(mod->clk);
176 void rsnd_mod_interrupt(struct rsnd_mod *mod,
177 void (*callback)(struct rsnd_mod *mod,
178 struct rsnd_dai_stream *io))
180 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
181 struct rsnd_dai_stream *io;
182 struct rsnd_dai *rdai;
185 for_each_rsnd_dai(rdai, priv, i) {
186 io = &rdai->playback;
187 if (mod == io->mod[mod->type])
191 if (mod == io->mod[mod->type])
196 int rsnd_io_is_working(struct rsnd_dai_stream *io)
198 /* see rsnd_dai_stream_init/quit() */
200 return snd_pcm_running(io->substream);
205 int rsnd_runtime_channel_original_with_params(struct rsnd_dai_stream *io,
206 struct snd_pcm_hw_params *params)
208 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
211 * params will be added when refine
213 * __rsnd_soc_hw_rule_rate()
214 * __rsnd_soc_hw_rule_channels()
217 return params_channels(params);
219 return runtime->channels;
222 int rsnd_runtime_channel_after_ctu_with_params(struct rsnd_dai_stream *io,
223 struct snd_pcm_hw_params *params)
225 int chan = rsnd_runtime_channel_original_with_params(io, params);
226 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io);
229 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod);
232 return converted_chan;
238 int rsnd_runtime_channel_for_ssi_with_params(struct rsnd_dai_stream *io,
239 struct snd_pcm_hw_params *params)
241 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
242 int chan = rsnd_io_is_play(io) ?
243 rsnd_runtime_channel_after_ctu_with_params(io, params) :
244 rsnd_runtime_channel_original_with_params(io, params);
247 if (rsnd_runtime_is_ssi_multi(io))
248 chan /= rsnd_rdai_ssi_lane_get(rdai);
250 /* TDM Extend Mode needs 8ch */
257 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io)
259 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
260 int lane = rsnd_rdai_ssi_lane_get(rdai);
261 int chan = rsnd_io_is_play(io) ?
262 rsnd_runtime_channel_after_ctu(io) :
263 rsnd_runtime_channel_original(io);
265 return (chan > 2) && (lane > 1);
268 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io)
270 return rsnd_runtime_channel_for_ssi(io) >= 6;
276 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
278 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
279 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
280 struct device *dev = rsnd_priv_to_dev(priv);
282 switch (snd_pcm_format_width(runtime->format)) {
289 dev_warn(dev, "not supported sample bits\n");
297 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
299 struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io);
300 struct rsnd_mod *target;
301 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
304 * *Hardware* L/R and *Software* L/R are inverted for 16bit data.
308 * We need to care about inversion timing to control
309 * Playback/Capture correctly.
310 * The point is [DVC] needs *Hardware* L/R, [MEM] needs *Software* L/R
312 * sL/R : software L/R
313 * hL/R : hardware L/R
314 * (*) : conversion timing
317 * sL/R (*) hL/R hL/R hL/R hL/R hL/R
318 * [MEM] -> [SRC] -> [DVC] -> [CMD] -> [SSIU] -> [SSI] -> codec
321 * hL/R hL/R hL/R hL/R hL/R (*) sL/R
322 * codec -> [SSI] -> [SSIU] -> [SRC] -> [DVC] -> [CMD] -> [MEM]
324 if (rsnd_io_is_play(io)) {
325 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
327 target = src ? src : ssiu;
329 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
331 target = cmd ? cmd : ssiu;
334 /* Non target mod or 24bit data needs normal DALIGN */
335 if ((snd_pcm_format_width(runtime->format) != 16) ||
338 /* Target mod needs inverted DALIGN when 16bit */
343 u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod)
345 enum rsnd_mod_type playback_mods[] = {
350 enum rsnd_mod_type capture_mods[] = {
355 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
356 struct rsnd_mod *tmod = NULL;
357 enum rsnd_mod_type *mods =
358 rsnd_io_is_play(io) ?
359 playback_mods : capture_mods;
363 * This is needed for 24bit data
364 * We need to shift 8bit
366 * Linux 24bit data is located as 0x00******
367 * HW 24bit data is located as 0x******00
370 if (snd_pcm_format_width(runtime->format) == 16)
373 for (i = 0; i < ARRAY_SIZE(playback_mods); i++) {
374 tmod = rsnd_io_to_mod(io, mods[i]);
382 if (rsnd_io_is_play(io))
383 return (0 << 20) | /* shift to Left */
384 (8 << 16); /* 8bit */
386 return (1 << 20) | /* shift to Right */
387 (8 << 16); /* 8bit */
393 struct rsnd_mod *rsnd_mod_next(int *iterator,
394 struct rsnd_dai_stream *io,
395 enum rsnd_mod_type *array,
398 struct rsnd_mod *mod;
399 enum rsnd_mod_type type;
400 int max = array ? array_size : RSND_MOD_MAX;
402 for (; *iterator < max; (*iterator)++) {
403 type = (array) ? array[*iterator] : *iterator;
404 mod = rsnd_io_to_mod(io, type);
412 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
446 static int rsnd_status_update(u32 *status,
447 int shift, int add, int timing)
449 u32 mask = 0xF << shift;
450 u8 val = (*status >> shift) & 0xF;
451 u8 next_val = (val + add) & 0xF;
452 int func_call = (val == timing);
454 if (next_val == 0xF) /* underflow case */
457 *status = (*status & ~mask) + (next_val << shift);
462 #define rsnd_dai_call(fn, io, param...) \
464 struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io)); \
465 struct rsnd_mod *mod; \
466 int is_play = rsnd_io_is_play(io); \
468 enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \
469 for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \
471 u32 *status = mod->get_status(io, mod, types[i]); \
472 int func_call = rsnd_status_update(status, \
473 __rsnd_mod_shift_##fn, \
474 __rsnd_mod_add_##fn, \
475 __rsnd_mod_call_##fn); \
476 rsnd_dbg_dai_call(dev, "%s[%d]\t0x%08x %s\n", \
477 rsnd_mod_name(mod), rsnd_mod_id(mod), *status, \
478 (func_call && (mod)->ops->fn) ? #fn : ""); \
479 if (func_call && (mod)->ops->fn) \
480 tmp = (mod)->ops->fn(mod, io, param); \
481 if (tmp && (tmp != -EPROBE_DEFER)) \
482 dev_err(dev, "%s[%d] : %s error %d\n", \
483 rsnd_mod_name(mod), rsnd_mod_id(mod), \
490 int rsnd_dai_connect(struct rsnd_mod *mod,
491 struct rsnd_dai_stream *io,
492 enum rsnd_mod_type type)
494 struct rsnd_priv *priv;
500 if (io->mod[type] == mod)
506 priv = rsnd_mod_to_priv(mod);
507 dev = rsnd_priv_to_dev(priv);
511 dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
512 rsnd_mod_name(mod), rsnd_mod_id(mod),
513 rsnd_io_is_play(io) ? "Playback" : "Capture");
518 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
519 struct rsnd_dai_stream *io,
520 enum rsnd_mod_type type)
522 io->mod[type] = NULL;
525 int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai,
528 if (max_channels > 0)
529 rdai->max_channels = max_channels;
531 return rdai->max_channels;
534 int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai,
538 rdai->ssi_lane = ssi_lane;
540 return rdai->ssi_lane;
543 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
545 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
548 return priv->rdai + id;
551 static struct snd_soc_dai_driver
552 *rsnd_daidrv_get(struct rsnd_priv *priv, int id)
554 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
557 return priv->daidrv + id;
560 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
561 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
563 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
565 return rsnd_rdai_get(priv, dai->id);
569 * rsnd_soc_dai functions
571 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
573 struct snd_pcm_substream *substream = io->substream;
576 * this function should be called...
578 * - if rsnd_dai_pointer_update() returns true
579 * - without spin lock
582 snd_pcm_period_elapsed(substream);
585 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
586 struct snd_pcm_substream *substream)
588 io->substream = substream;
591 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
593 io->substream = NULL;
597 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
599 struct snd_soc_pcm_runtime *rtd = substream->private_data;
605 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
606 struct snd_pcm_substream *substream)
608 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
609 return &rdai->playback;
611 return &rdai->capture;
614 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
615 struct snd_soc_dai *dai)
617 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
618 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
619 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
623 spin_lock_irqsave(&priv->lock, flags);
626 case SNDRV_PCM_TRIGGER_START:
627 case SNDRV_PCM_TRIGGER_RESUME:
628 ret = rsnd_dai_call(init, io, priv);
630 goto dai_trigger_end;
632 ret = rsnd_dai_call(start, io, priv);
634 goto dai_trigger_end;
636 ret = rsnd_dai_call(irq, io, priv, 1);
638 goto dai_trigger_end;
641 case SNDRV_PCM_TRIGGER_STOP:
642 case SNDRV_PCM_TRIGGER_SUSPEND:
643 ret = rsnd_dai_call(irq, io, priv, 0);
645 ret |= rsnd_dai_call(stop, io, priv);
647 ret |= rsnd_dai_call(quit, io, priv);
655 spin_unlock_irqrestore(&priv->lock, flags);
660 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
662 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
664 /* set master/slave audio interface */
665 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
666 case SND_SOC_DAIFMT_CBM_CFM:
667 rdai->clk_master = 0;
669 case SND_SOC_DAIFMT_CBS_CFS:
670 rdai->clk_master = 1; /* codec is slave, cpu is master */
677 rdai->bit_clk_inv = 0;
678 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
679 case SND_SOC_DAIFMT_I2S:
681 rdai->data_alignment = 0;
682 rdai->frm_clk_inv = 0;
684 case SND_SOC_DAIFMT_LEFT_J:
686 rdai->data_alignment = 0;
687 rdai->frm_clk_inv = 1;
689 case SND_SOC_DAIFMT_RIGHT_J:
691 rdai->data_alignment = 1;
692 rdai->frm_clk_inv = 1;
696 /* set clock inversion */
697 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
698 case SND_SOC_DAIFMT_NB_IF:
699 rdai->frm_clk_inv = !rdai->frm_clk_inv;
701 case SND_SOC_DAIFMT_IB_NF:
702 rdai->bit_clk_inv = !rdai->bit_clk_inv;
704 case SND_SOC_DAIFMT_IB_IF:
705 rdai->bit_clk_inv = !rdai->bit_clk_inv;
706 rdai->frm_clk_inv = !rdai->frm_clk_inv;
708 case SND_SOC_DAIFMT_NB_NF:
716 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
717 u32 tx_mask, u32 rx_mask,
718 int slots, int slot_width)
720 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
721 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
722 struct device *dev = rsnd_priv_to_dev(priv);
728 /* TDM Extend Mode */
729 rsnd_rdai_channels_set(rdai, slots);
730 rsnd_rdai_ssi_lane_set(rdai, 1);
733 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
740 static unsigned int rsnd_soc_hw_channels_list[] = {
744 static unsigned int rsnd_soc_hw_rate_list[] = {
759 static int rsnd_soc_hw_rule(struct rsnd_priv *priv,
760 unsigned int *list, int list_num,
761 struct snd_interval *baseline, struct snd_interval *iv)
763 struct snd_interval p;
767 snd_interval_any(&p);
771 for (i = 0; i < list_num; i++) {
773 if (!snd_interval_test(iv, list[i]))
776 rate = rsnd_ssi_clk_query(priv,
777 baseline->min, list[i], NULL);
779 p.min = min(p.min, list[i]);
780 p.max = max(p.max, list[i]);
783 rate = rsnd_ssi_clk_query(priv,
784 baseline->max, list[i], NULL);
786 p.min = min(p.min, list[i]);
787 p.max = max(p.max, list[i]);
791 return snd_interval_refine(iv, &p);
794 static int __rsnd_soc_hw_rule_rate(struct snd_pcm_hw_params *params,
795 struct snd_pcm_hw_rule *rule,
798 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
799 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
800 struct snd_interval ic;
801 struct snd_soc_dai *dai = rule->private;
802 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
803 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
804 struct rsnd_dai_stream *io = is_play ? &rdai->playback : &rdai->capture;
807 * possible sampling rate limitation is same as
808 * 2ch if it supports multi ssi
809 * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init())
813 ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params);
815 return rsnd_soc_hw_rule(priv, rsnd_soc_hw_rate_list,
816 ARRAY_SIZE(rsnd_soc_hw_rate_list),
820 static int rsnd_soc_hw_rule_rate_playback(struct snd_pcm_hw_params *params,
821 struct snd_pcm_hw_rule *rule)
823 return __rsnd_soc_hw_rule_rate(params, rule, 1);
826 static int rsnd_soc_hw_rule_rate_capture(struct snd_pcm_hw_params *params,
827 struct snd_pcm_hw_rule *rule)
829 return __rsnd_soc_hw_rule_rate(params, rule, 0);
832 static int __rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params,
833 struct snd_pcm_hw_rule *rule,
836 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
837 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
838 struct snd_interval ic;
839 struct snd_soc_dai *dai = rule->private;
840 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
841 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
842 struct rsnd_dai_stream *io = is_play ? &rdai->playback : &rdai->capture;
845 * possible sampling rate limitation is same as
846 * 2ch if it supports multi ssi
847 * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init())
851 ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params);
853 return rsnd_soc_hw_rule(priv, rsnd_soc_hw_channels_list,
854 ARRAY_SIZE(rsnd_soc_hw_channels_list),
858 static int rsnd_soc_hw_rule_channels_playback(struct snd_pcm_hw_params *params,
859 struct snd_pcm_hw_rule *rule)
861 return __rsnd_soc_hw_rule_channels(params, rule, 1);
864 static int rsnd_soc_hw_rule_channels_capture(struct snd_pcm_hw_params *params,
865 struct snd_pcm_hw_rule *rule)
867 return __rsnd_soc_hw_rule_channels(params, rule, 0);
870 static const struct snd_pcm_hardware rsnd_pcm_hardware = {
871 .info = SNDRV_PCM_INFO_INTERLEAVED |
872 SNDRV_PCM_INFO_MMAP |
873 SNDRV_PCM_INFO_MMAP_VALID,
874 .buffer_bytes_max = 64 * 1024,
875 .period_bytes_min = 32,
876 .period_bytes_max = 8192,
882 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
883 struct snd_soc_dai *dai)
885 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
886 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
887 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
888 struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint;
889 struct snd_pcm_runtime *runtime = substream->runtime;
890 unsigned int max_channels = rsnd_rdai_channels_get(rdai);
894 rsnd_dai_stream_init(io, substream);
898 * It depends on Platform design
900 constraint->list = rsnd_soc_hw_channels_list;
901 constraint->count = 0;
902 constraint->mask = 0;
904 for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) {
905 if (rsnd_soc_hw_channels_list[i] > max_channels)
907 constraint->count = i + 1;
910 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
912 snd_pcm_hw_constraint_list(runtime, 0,
913 SNDRV_PCM_HW_PARAM_CHANNELS, constraint);
915 snd_pcm_hw_constraint_integer(runtime,
916 SNDRV_PCM_HW_PARAM_PERIODS);
919 * Sampling Rate / Channel Limitation
920 * It depends on Clock Master Mode
922 if (rsnd_rdai_is_clk_master(rdai)) {
923 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
925 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
926 is_play ? rsnd_soc_hw_rule_rate_playback :
927 rsnd_soc_hw_rule_rate_capture,
929 SNDRV_PCM_HW_PARAM_CHANNELS, -1);
930 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
931 is_play ? rsnd_soc_hw_rule_channels_playback :
932 rsnd_soc_hw_rule_channels_capture,
934 SNDRV_PCM_HW_PARAM_RATE, -1);
938 * call rsnd_dai_call without spinlock
940 ret = rsnd_dai_call(nolock_start, io, priv);
942 rsnd_dai_call(nolock_stop, io, priv);
947 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
948 struct snd_soc_dai *dai)
950 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
951 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
952 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
955 * call rsnd_dai_call without spinlock
957 rsnd_dai_call(nolock_stop, io, priv);
959 rsnd_dai_stream_quit(io);
962 static int rsnd_soc_dai_prepare(struct snd_pcm_substream *substream,
963 struct snd_soc_dai *dai)
965 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
966 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
967 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
969 return rsnd_dai_call(prepare, io, priv);
972 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
973 .startup = rsnd_soc_dai_startup,
974 .shutdown = rsnd_soc_dai_shutdown,
975 .trigger = rsnd_soc_dai_trigger,
976 .set_fmt = rsnd_soc_dai_set_fmt,
977 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot,
978 .prepare = rsnd_soc_dai_prepare,
981 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
982 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
983 struct device_node *node,
984 struct device_node *playback,
985 struct device_node *capture)
987 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
988 struct device_node *np;
989 struct rsnd_mod *mod;
996 for_each_child_of_node(node, np) {
997 mod = mod_get(priv, i);
999 rsnd_dai_connect(mod, &rdai->playback, mod->type);
1001 rsnd_dai_connect(mod, &rdai->capture, mod->type);
1008 static struct device_node *rsnd_dai_of_node(struct rsnd_priv *priv,
1011 struct device *dev = rsnd_priv_to_dev(priv);
1012 struct device_node *np = dev->of_node;
1013 struct device_node *dai_node;
1014 struct device_node *ret;
1019 * parse both previous dai (= rcar_sound,dai), and
1020 * graph dai (= ports/port)
1022 dai_node = of_get_child_by_name(np, RSND_NODE_DAI);
1025 goto of_node_compatible;
1030 dai_node = of_graph_get_next_endpoint(np, NULL);
1039 of_node_put(dai_node);
1044 static void __rsnd_dai_probe(struct rsnd_priv *priv,
1045 struct device_node *dai_np,
1048 struct device_node *playback, *capture;
1049 struct rsnd_dai_stream *io_playback;
1050 struct rsnd_dai_stream *io_capture;
1051 struct snd_soc_dai_driver *drv;
1052 struct rsnd_dai *rdai;
1053 struct device *dev = rsnd_priv_to_dev(priv);
1056 rdai = rsnd_rdai_get(priv, dai_i);
1057 drv = rsnd_daidrv_get(priv, dai_i);
1058 io_playback = &rdai->playback;
1059 io_capture = &rdai->capture;
1061 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
1064 drv->name = rdai->name;
1065 drv->ops = &rsnd_soc_dai_ops;
1067 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE,
1068 "DAI%d Playback", dai_i);
1069 drv->playback.rates = RSND_RATES;
1070 drv->playback.formats = RSND_FMTS;
1071 drv->playback.channels_min = 2;
1072 drv->playback.channels_max = 8;
1073 drv->playback.stream_name = rdai->playback.name;
1075 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
1076 "DAI%d Capture", dai_i);
1077 drv->capture.rates = RSND_RATES;
1078 drv->capture.formats = RSND_FMTS;
1079 drv->capture.channels_min = 2;
1080 drv->capture.channels_max = 8;
1081 drv->capture.stream_name = rdai->capture.name;
1083 rdai->playback.rdai = rdai;
1084 rdai->capture.rdai = rdai;
1085 rsnd_rdai_channels_set(rdai, 2); /* default 2ch */
1086 rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */
1088 for (io_i = 0;; io_i++) {
1089 playback = of_parse_phandle(dai_np, "playback", io_i);
1090 capture = of_parse_phandle(dai_np, "capture", io_i);
1092 if (!playback && !capture)
1095 rsnd_parse_connect_ssi(rdai, playback, capture);
1096 rsnd_parse_connect_src(rdai, playback, capture);
1097 rsnd_parse_connect_ctu(rdai, playback, capture);
1098 rsnd_parse_connect_mix(rdai, playback, capture);
1099 rsnd_parse_connect_dvc(rdai, playback, capture);
1101 of_node_put(playback);
1102 of_node_put(capture);
1105 if (rsnd_ssi_is_pin_sharing(io_capture) ||
1106 rsnd_ssi_is_pin_sharing(io_playback)) {
1107 /* should have symmetric_rates if pin sharing */
1108 drv->symmetric_rates = 1;
1111 dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
1112 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ",
1113 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- ");
1116 static int rsnd_dai_probe(struct rsnd_priv *priv)
1118 struct device_node *dai_node;
1119 struct device_node *dai_np;
1120 struct snd_soc_dai_driver *rdrv;
1121 struct device *dev = rsnd_priv_to_dev(priv);
1122 struct rsnd_dai *rdai;
1127 dai_node = rsnd_dai_of_node(priv, &is_graph);
1129 nr = of_graph_get_endpoint_count(dai_node);
1131 nr = of_get_child_count(dai_node);
1136 rdrv = devm_kcalloc(dev, nr, sizeof(*rdrv), GFP_KERNEL);
1137 rdai = devm_kcalloc(dev, nr, sizeof(*rdai), GFP_KERNEL);
1142 priv->daidrv = rdrv;
1150 for_each_endpoint_of_node(dai_node, dai_np) {
1151 __rsnd_dai_probe(priv, dai_np, dai_i);
1152 rsnd_ssi_parse_hdmi_connection(priv, dai_np, dai_i);
1156 for_each_child_of_node(dai_node, dai_np)
1157 __rsnd_dai_probe(priv, dai_np, dai_i++);
1166 static int rsnd_hw_params(struct snd_pcm_substream *substream,
1167 struct snd_pcm_hw_params *hw_params)
1169 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1170 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1171 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1174 ret = rsnd_dai_call(hw_params, io, substream, hw_params);
1178 return snd_pcm_lib_malloc_pages(substream,
1179 params_buffer_bytes(hw_params));
1182 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
1184 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1185 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1186 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1187 snd_pcm_uframes_t pointer = 0;
1189 rsnd_dai_call(pointer, io, &pointer);
1194 static const struct snd_pcm_ops rsnd_pcm_ops = {
1195 .ioctl = snd_pcm_lib_ioctl,
1196 .hw_params = rsnd_hw_params,
1197 .hw_free = snd_pcm_lib_free_pages,
1198 .pointer = rsnd_pointer,
1204 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
1205 struct snd_ctl_elem_info *uinfo)
1207 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1210 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1211 uinfo->count = cfg->size;
1212 uinfo->value.enumerated.items = cfg->max;
1213 if (uinfo->value.enumerated.item >= cfg->max)
1214 uinfo->value.enumerated.item = cfg->max - 1;
1215 strlcpy(uinfo->value.enumerated.name,
1216 cfg->texts[uinfo->value.enumerated.item],
1217 sizeof(uinfo->value.enumerated.name));
1219 uinfo->count = cfg->size;
1220 uinfo->value.integer.min = 0;
1221 uinfo->value.integer.max = cfg->max;
1222 uinfo->type = (cfg->max == 1) ?
1223 SNDRV_CTL_ELEM_TYPE_BOOLEAN :
1224 SNDRV_CTL_ELEM_TYPE_INTEGER;
1230 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
1231 struct snd_ctl_elem_value *uc)
1233 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1236 for (i = 0; i < cfg->size; i++)
1238 uc->value.enumerated.item[i] = cfg->val[i];
1240 uc->value.integer.value[i] = cfg->val[i];
1245 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1246 struct snd_ctl_elem_value *uc)
1248 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1251 if (!cfg->accept(cfg->io))
1254 for (i = 0; i < cfg->size; i++) {
1256 change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1257 cfg->val[i] = uc->value.enumerated.item[i];
1259 change |= (uc->value.integer.value[i] != cfg->val[i]);
1260 cfg->val[i] = uc->value.integer.value[i];
1264 if (change && cfg->update)
1265 cfg->update(cfg->io, cfg->mod);
1270 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io)
1275 int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io)
1277 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
1282 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg)
1284 cfg->cfg.val = cfg->val;
1289 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg)
1291 cfg->cfg.val = &cfg->val;
1296 const char * const volume_ramp_rate[] = {
1297 "128 dB/1 step", /* 00000 */
1298 "64 dB/1 step", /* 00001 */
1299 "32 dB/1 step", /* 00010 */
1300 "16 dB/1 step", /* 00011 */
1301 "8 dB/1 step", /* 00100 */
1302 "4 dB/1 step", /* 00101 */
1303 "2 dB/1 step", /* 00110 */
1304 "1 dB/1 step", /* 00111 */
1305 "0.5 dB/1 step", /* 01000 */
1306 "0.25 dB/1 step", /* 01001 */
1307 "0.125 dB/1 step", /* 01010 = VOLUME_RAMP_MAX_MIX */
1308 "0.125 dB/2 steps", /* 01011 */
1309 "0.125 dB/4 steps", /* 01100 */
1310 "0.125 dB/8 steps", /* 01101 */
1311 "0.125 dB/16 steps", /* 01110 */
1312 "0.125 dB/32 steps", /* 01111 */
1313 "0.125 dB/64 steps", /* 10000 */
1314 "0.125 dB/128 steps", /* 10001 */
1315 "0.125 dB/256 steps", /* 10010 */
1316 "0.125 dB/512 steps", /* 10011 */
1317 "0.125 dB/1024 steps", /* 10100 */
1318 "0.125 dB/2048 steps", /* 10101 */
1319 "0.125 dB/4096 steps", /* 10110 */
1320 "0.125 dB/8192 steps", /* 10111 = VOLUME_RAMP_MAX_DVC */
1323 int rsnd_kctrl_new(struct rsnd_mod *mod,
1324 struct rsnd_dai_stream *io,
1325 struct snd_soc_pcm_runtime *rtd,
1326 const unsigned char *name,
1327 int (*accept)(struct rsnd_dai_stream *io),
1328 void (*update)(struct rsnd_dai_stream *io,
1329 struct rsnd_mod *mod),
1330 struct rsnd_kctrl_cfg *cfg,
1331 const char * const *texts,
1335 struct snd_card *card = rtd->card->snd_card;
1336 struct snd_kcontrol *kctrl;
1337 struct snd_kcontrol_new knew = {
1338 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1340 .info = rsnd_kctrl_info,
1342 .get = rsnd_kctrl_get,
1343 .put = rsnd_kctrl_put,
1348 * 1) Avoid duplicate register for DVC with MIX case
1349 * 2) Allow duplicate register for MIX
1350 * 3) re-register if card was rebinded
1352 list_for_each_entry(kctrl, &card->controls, list) {
1353 struct rsnd_kctrl_cfg *c = kctrl->private_data;
1359 if (size > RSND_MAX_CHANNELS)
1362 kctrl = snd_ctl_new1(&knew, cfg);
1366 ret = snd_ctl_add(card, kctrl);
1373 cfg->accept = accept;
1374 cfg->update = update;
1387 #define PREALLOC_BUFFER (32 * 1024)
1388 #define PREALLOC_BUFFER_MAX (32 * 1024)
1390 static int rsnd_preallocate_pages(struct snd_soc_pcm_runtime *rtd,
1391 struct rsnd_dai_stream *io,
1394 struct rsnd_priv *priv = rsnd_io_to_priv(io);
1395 struct device *dev = rsnd_priv_to_dev(priv);
1396 struct snd_pcm_substream *substream;
1400 * use Audio-DMAC dev if we can use IPMMU
1402 * rsnd_dmaen_attach()
1407 for (substream = rtd->pcm->streams[stream].substream;
1409 substream = substream->next) {
1410 err = snd_pcm_lib_preallocate_pages(substream,
1413 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1421 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1423 struct snd_soc_dai *dai = rtd->cpu_dai;
1424 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1427 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1431 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1435 ret = rsnd_preallocate_pages(rtd, &rdai->playback,
1436 SNDRV_PCM_STREAM_PLAYBACK);
1440 ret = rsnd_preallocate_pages(rtd, &rdai->capture,
1441 SNDRV_PCM_STREAM_CAPTURE);
1448 static const struct snd_soc_component_driver rsnd_soc_component = {
1449 .ops = &rsnd_pcm_ops,
1450 .pcm_new = rsnd_pcm_new,
1454 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1455 struct rsnd_dai_stream *io)
1459 ret = rsnd_dai_call(probe, io, priv);
1460 if (ret == -EAGAIN) {
1461 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1462 struct rsnd_mod *mod;
1466 * Fallback to PIO mode
1470 * call "remove" for SSI/SRC/DVC
1471 * SSI will be switch to PIO mode if it was DMA mode
1474 * rsnd_ssi_fallback()
1476 rsnd_dai_call(remove, io, priv);
1479 * remove all mod from io
1480 * and, re connect ssi
1482 for_each_rsnd_mod(i, mod, io)
1483 rsnd_dai_disconnect(mod, io, i);
1484 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1489 rsnd_dai_call(fallback, io, priv);
1493 * DAI has SSI which is PIO mode only now.
1495 ret = rsnd_dai_call(probe, io, priv);
1504 static int rsnd_probe(struct platform_device *pdev)
1506 struct rsnd_priv *priv;
1507 struct device *dev = &pdev->dev;
1508 struct rsnd_dai *rdai;
1509 int (*probe_func[])(struct rsnd_priv *priv) = {
1527 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1532 priv->flags = (unsigned long)of_device_get_match_data(dev);
1533 spin_lock_init(&priv->lock);
1538 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1539 ret = probe_func[i](priv);
1544 for_each_rsnd_dai(rdai, priv, i) {
1545 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1547 goto exit_snd_probe;
1549 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1551 goto exit_snd_probe;
1554 dev_set_drvdata(dev, priv);
1559 ret = devm_snd_soc_register_component(dev, &rsnd_soc_component,
1560 priv->daidrv, rsnd_rdai_nr(priv));
1562 dev_err(dev, "cannot snd dai register\n");
1563 goto exit_snd_probe;
1566 pm_runtime_enable(dev);
1568 dev_info(dev, "probed\n");
1572 for_each_rsnd_dai(rdai, priv, i) {
1573 rsnd_dai_call(remove, &rdai->playback, priv);
1574 rsnd_dai_call(remove, &rdai->capture, priv);
1578 * adg is very special mod which can't use rsnd_dai_call(remove),
1579 * and it registers ADG clock on probe.
1580 * It should be unregister if probe failed.
1581 * Mainly it is assuming -EPROBE_DEFER case
1583 rsnd_adg_remove(priv);
1588 static int rsnd_remove(struct platform_device *pdev)
1590 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1591 struct rsnd_dai *rdai;
1592 void (*remove_func[])(struct rsnd_priv *priv) = {
1604 snd_soc_disconnect_sync(&pdev->dev);
1606 pm_runtime_disable(&pdev->dev);
1608 for_each_rsnd_dai(rdai, priv, i) {
1609 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1610 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1613 for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1614 remove_func[i](priv);
1619 static int __maybe_unused rsnd_suspend(struct device *dev)
1621 struct rsnd_priv *priv = dev_get_drvdata(dev);
1623 rsnd_adg_clk_disable(priv);
1628 static int __maybe_unused rsnd_resume(struct device *dev)
1630 struct rsnd_priv *priv = dev_get_drvdata(dev);
1632 rsnd_adg_clk_enable(priv);
1637 static const struct dev_pm_ops rsnd_pm_ops = {
1638 SET_SYSTEM_SLEEP_PM_OPS(rsnd_suspend, rsnd_resume)
1641 static struct platform_driver rsnd_driver = {
1643 .name = "rcar_sound",
1645 .of_match_table = rsnd_of_match,
1647 .probe = rsnd_probe,
1648 .remove = rsnd_remove,
1650 module_platform_driver(rsnd_driver);
1652 MODULE_LICENSE("GPL v2");
1653 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1654 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1655 MODULE_ALIAS("platform:rcar-pcm-audio");