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 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
125 struct rsnd_mod *mod)
127 if (!mod || !mod->ops || !mod->ops->dma_req)
130 return mod->ops->dma_req(io, mod);
133 u32 *rsnd_mod_get_status(struct rsnd_dai_stream *io,
134 struct rsnd_mod *mod,
135 enum rsnd_mod_type type)
140 int rsnd_mod_init(struct rsnd_priv *priv,
141 struct rsnd_mod *mod,
142 struct rsnd_mod_ops *ops,
144 u32* (*get_status)(struct rsnd_dai_stream *io,
145 struct rsnd_mod *mod,
146 enum rsnd_mod_type type),
147 enum rsnd_mod_type type,
150 int ret = clk_prepare(clk);
160 mod->get_status = get_status;
165 void rsnd_mod_quit(struct rsnd_mod *mod)
167 clk_unprepare(mod->clk);
171 void rsnd_mod_interrupt(struct rsnd_mod *mod,
172 void (*callback)(struct rsnd_mod *mod,
173 struct rsnd_dai_stream *io))
175 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
176 struct rsnd_dai_stream *io;
177 struct rsnd_dai *rdai;
180 for_each_rsnd_dai(rdai, priv, i) {
181 io = &rdai->playback;
182 if (mod == io->mod[mod->type])
186 if (mod == io->mod[mod->type])
191 int rsnd_io_is_working(struct rsnd_dai_stream *io)
193 /* see rsnd_dai_stream_init/quit() */
195 return snd_pcm_running(io->substream);
200 int rsnd_runtime_channel_original(struct rsnd_dai_stream *io)
202 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
204 return runtime->channels;
207 int rsnd_runtime_channel_after_ctu(struct rsnd_dai_stream *io)
209 int chan = rsnd_runtime_channel_original(io);
210 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io);
213 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod);
216 return converted_chan;
222 int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io)
224 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
225 int chan = rsnd_io_is_play(io) ?
226 rsnd_runtime_channel_after_ctu(io) :
227 rsnd_runtime_channel_original(io);
230 if (rsnd_runtime_is_ssi_multi(io))
231 chan /= rsnd_rdai_ssi_lane_get(rdai);
233 /* TDM Extend Mode needs 8ch */
240 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io)
242 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
243 int lane = rsnd_rdai_ssi_lane_get(rdai);
244 int chan = rsnd_io_is_play(io) ?
245 rsnd_runtime_channel_after_ctu(io) :
246 rsnd_runtime_channel_original(io);
248 return (chan > 2) && (lane > 1);
251 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io)
253 return rsnd_runtime_channel_for_ssi(io) >= 6;
259 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
261 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
262 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
263 struct device *dev = rsnd_priv_to_dev(priv);
265 switch (runtime->sample_bits) {
272 dev_warn(dev, "not supported sample bits\n");
280 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
282 struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io);
283 struct rsnd_mod *target;
284 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
285 u32 val = 0x76543210;
289 * *Hardware* L/R and *Software* L/R are inverted.
290 * We need to care about inversion timing to control
291 * Playback/Capture correctly.
292 * The point is [DVC] needs *Hardware* L/R, [MEM] needs *Software* L/R
294 * sL/R : software L/R
295 * hL/R : hardware L/R
296 * (*) : conversion timing
299 * sL/R (*) hL/R hL/R hL/R hL/R hL/R
300 * [MEM] -> [SRC] -> [DVC] -> [CMD] -> [SSIU] -> [SSI] -> codec
303 * hL/R hL/R hL/R hL/R hL/R (*) sL/R
304 * codec -> [SSI] -> [SSIU] -> [SRC] -> [DVC] -> [CMD] -> [MEM]
306 if (rsnd_io_is_play(io)) {
307 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
309 target = src ? src : ssiu;
311 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
313 target = cmd ? cmd : ssiu;
316 mask <<= runtime->channels * 4;
319 switch (runtime->sample_bits) {
321 val |= 0x67452301 & ~mask;
324 val |= 0x76543210 & ~mask;
329 * exchange channeles on SRC if possible,
330 * otherwise, R/L volume settings on DVC
331 * changes inverted channels
339 u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod)
341 enum rsnd_mod_type playback_mods[] = {
346 enum rsnd_mod_type capture_mods[] = {
351 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
352 struct rsnd_mod *tmod = NULL;
353 enum rsnd_mod_type *mods =
354 rsnd_io_is_play(io) ?
355 playback_mods : capture_mods;
359 * This is needed for 24bit data
360 * We need to shift 8bit
362 * Linux 24bit data is located as 0x00******
363 * HW 24bit data is located as 0x******00
366 switch (runtime->sample_bits) {
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 dev_dbg(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); \
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 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
552 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
554 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
556 return rsnd_rdai_get(priv, dai->id);
560 * rsnd_soc_dai functions
562 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
564 struct snd_pcm_substream *substream = io->substream;
567 * this function should be called...
569 * - if rsnd_dai_pointer_update() returns true
570 * - without spin lock
573 snd_pcm_period_elapsed(substream);
576 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
577 struct snd_pcm_substream *substream)
579 io->substream = substream;
582 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
584 io->substream = NULL;
588 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
590 struct snd_soc_pcm_runtime *rtd = substream->private_data;
596 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
597 struct snd_pcm_substream *substream)
599 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
600 return &rdai->playback;
602 return &rdai->capture;
605 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
606 struct snd_soc_dai *dai)
608 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
609 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
610 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
614 spin_lock_irqsave(&priv->lock, flags);
617 case SNDRV_PCM_TRIGGER_START:
618 case SNDRV_PCM_TRIGGER_RESUME:
619 rsnd_dai_stream_init(io, substream);
621 ret = rsnd_dai_call(init, io, priv);
623 goto dai_trigger_end;
625 ret = rsnd_dai_call(start, io, priv);
627 goto dai_trigger_end;
629 ret = rsnd_dai_call(irq, io, priv, 1);
631 goto dai_trigger_end;
634 case SNDRV_PCM_TRIGGER_STOP:
635 case SNDRV_PCM_TRIGGER_SUSPEND:
636 ret = rsnd_dai_call(irq, io, priv, 0);
638 ret |= rsnd_dai_call(stop, io, priv);
640 ret |= rsnd_dai_call(quit, io, priv);
642 rsnd_dai_stream_quit(io);
649 spin_unlock_irqrestore(&priv->lock, flags);
654 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
656 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
658 /* set master/slave audio interface */
659 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
660 case SND_SOC_DAIFMT_CBM_CFM:
661 rdai->clk_master = 0;
663 case SND_SOC_DAIFMT_CBS_CFS:
664 rdai->clk_master = 1; /* codec is slave, cpu is master */
671 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
672 case SND_SOC_DAIFMT_I2S:
674 rdai->data_alignment = 0;
675 rdai->frm_clk_inv = 0;
677 case SND_SOC_DAIFMT_LEFT_J:
679 rdai->data_alignment = 0;
680 rdai->frm_clk_inv = 1;
682 case SND_SOC_DAIFMT_RIGHT_J:
684 rdai->data_alignment = 1;
685 rdai->frm_clk_inv = 1;
689 /* set clock inversion */
690 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
691 case SND_SOC_DAIFMT_NB_IF:
692 rdai->frm_clk_inv = !rdai->frm_clk_inv;
694 case SND_SOC_DAIFMT_IB_NF:
695 rdai->bit_clk_inv = !rdai->bit_clk_inv;
697 case SND_SOC_DAIFMT_IB_IF:
698 rdai->bit_clk_inv = !rdai->bit_clk_inv;
699 rdai->frm_clk_inv = !rdai->frm_clk_inv;
701 case SND_SOC_DAIFMT_NB_NF:
709 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
710 u32 tx_mask, u32 rx_mask,
711 int slots, int slot_width)
713 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
714 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
715 struct device *dev = rsnd_priv_to_dev(priv);
721 /* TDM Extend Mode */
722 rsnd_rdai_channels_set(rdai, slots);
723 rsnd_rdai_ssi_lane_set(rdai, 1);
726 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
733 static unsigned int rsnd_soc_hw_channels_list[] = {
737 static unsigned int rsnd_soc_hw_rate_list[] = {
752 static int rsnd_soc_hw_rule(struct rsnd_priv *priv,
753 unsigned int *list, int list_num,
754 struct snd_interval *baseline, struct snd_interval *iv)
756 struct snd_interval p;
760 snd_interval_any(&p);
764 for (i = 0; i < list_num; i++) {
766 if (!snd_interval_test(iv, list[i]))
769 rate = rsnd_ssi_clk_query(priv,
770 baseline->min, list[i], NULL);
772 p.min = min(p.min, list[i]);
773 p.max = max(p.max, list[i]);
776 rate = rsnd_ssi_clk_query(priv,
777 baseline->max, list[i], NULL);
779 p.min = min(p.min, list[i]);
780 p.max = max(p.max, list[i]);
784 return snd_interval_refine(iv, &p);
787 static int rsnd_soc_hw_rule_rate(struct snd_pcm_hw_params *params,
788 struct snd_pcm_hw_rule *rule)
790 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
791 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
792 struct snd_interval ic;
793 struct snd_soc_dai *dai = rule->private;
794 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
795 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
798 * possible sampling rate limitation is same as
799 * 2ch if it supports multi ssi
802 if (1 < rsnd_rdai_ssi_lane_get(rdai)) {
807 return rsnd_soc_hw_rule(priv, rsnd_soc_hw_rate_list,
808 ARRAY_SIZE(rsnd_soc_hw_rate_list),
813 static int rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params,
814 struct snd_pcm_hw_rule *rule)
816 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
817 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
818 struct snd_interval ic;
819 struct snd_soc_dai *dai = rule->private;
820 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
821 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
824 * possible sampling rate limitation is same as
825 * 2ch if it supports multi ssi
828 if (1 < rsnd_rdai_ssi_lane_get(rdai)) {
833 return rsnd_soc_hw_rule(priv, rsnd_soc_hw_channels_list,
834 ARRAY_SIZE(rsnd_soc_hw_channels_list),
838 static const struct snd_pcm_hardware rsnd_pcm_hardware = {
839 .info = SNDRV_PCM_INFO_INTERLEAVED |
840 SNDRV_PCM_INFO_MMAP |
841 SNDRV_PCM_INFO_MMAP_VALID,
842 .buffer_bytes_max = 64 * 1024,
843 .period_bytes_min = 32,
844 .period_bytes_max = 8192,
850 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
851 struct snd_soc_dai *dai)
853 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
854 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
855 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
856 struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint;
857 struct snd_pcm_runtime *runtime = substream->runtime;
858 unsigned int max_channels = rsnd_rdai_channels_get(rdai);
864 * It depends on Platform design
866 constraint->list = rsnd_soc_hw_channels_list;
867 constraint->count = 0;
868 constraint->mask = 0;
870 for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) {
871 if (rsnd_soc_hw_channels_list[i] > max_channels)
873 constraint->count = i + 1;
876 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
878 snd_pcm_hw_constraint_list(runtime, 0,
879 SNDRV_PCM_HW_PARAM_CHANNELS, constraint);
881 snd_pcm_hw_constraint_integer(runtime,
882 SNDRV_PCM_HW_PARAM_PERIODS);
885 * Sampling Rate / Channel Limitation
886 * It depends on Clock Master Mode
888 if (rsnd_rdai_is_clk_master(rdai)) {
889 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
890 rsnd_soc_hw_rule_rate, dai,
891 SNDRV_PCM_HW_PARAM_CHANNELS, -1);
892 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
893 rsnd_soc_hw_rule_channels, dai,
894 SNDRV_PCM_HW_PARAM_RATE, -1);
898 * call rsnd_dai_call without spinlock
900 ret = rsnd_dai_call(nolock_start, io, priv);
902 rsnd_dai_call(nolock_stop, io, priv);
907 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
908 struct snd_soc_dai *dai)
910 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
911 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
912 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
915 * call rsnd_dai_call without spinlock
917 rsnd_dai_call(nolock_stop, io, priv);
920 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
921 .startup = rsnd_soc_dai_startup,
922 .shutdown = rsnd_soc_dai_shutdown,
923 .trigger = rsnd_soc_dai_trigger,
924 .set_fmt = rsnd_soc_dai_set_fmt,
925 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot,
928 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
929 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
930 struct device_node *node,
931 struct device_node *playback,
932 struct device_node *capture)
934 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
935 struct device_node *np;
936 struct rsnd_mod *mod;
943 for_each_child_of_node(node, np) {
944 mod = mod_get(priv, i);
946 rsnd_dai_connect(mod, &rdai->playback, mod->type);
948 rsnd_dai_connect(mod, &rdai->capture, mod->type);
955 static struct device_node *rsnd_dai_of_node(struct rsnd_priv *priv,
958 struct device *dev = rsnd_priv_to_dev(priv);
959 struct device_node *np = dev->of_node;
960 struct device_node *dai_node;
961 struct device_node *ret;
966 * parse both previous dai (= rcar_sound,dai), and
967 * graph dai (= ports/port)
969 dai_node = of_get_child_by_name(np, RSND_NODE_DAI);
972 goto of_node_compatible;
977 dai_node = of_graph_get_next_endpoint(np, NULL);
986 of_node_put(dai_node);
991 static void __rsnd_dai_probe(struct rsnd_priv *priv,
992 struct device_node *dai_np,
993 int dai_i, int is_graph)
995 struct device_node *playback, *capture;
996 struct rsnd_dai_stream *io_playback;
997 struct rsnd_dai_stream *io_capture;
998 struct snd_soc_dai_driver *drv;
999 struct rsnd_dai *rdai;
1000 struct device *dev = rsnd_priv_to_dev(priv);
1003 rdai = rsnd_rdai_get(priv, dai_i);
1004 drv = priv->daidrv + dai_i;
1005 io_playback = &rdai->playback;
1006 io_capture = &rdai->capture;
1008 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
1011 drv->name = rdai->name;
1012 drv->ops = &rsnd_soc_dai_ops;
1014 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE,
1015 "DAI%d Playback", dai_i);
1016 drv->playback.rates = RSND_RATES;
1017 drv->playback.formats = RSND_FMTS;
1018 drv->playback.channels_min = 2;
1019 drv->playback.channels_max = 8;
1020 drv->playback.stream_name = rdai->playback.name;
1022 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
1023 "DAI%d Capture", dai_i);
1024 drv->capture.rates = RSND_RATES;
1025 drv->capture.formats = RSND_FMTS;
1026 drv->capture.channels_min = 2;
1027 drv->capture.channels_max = 8;
1028 drv->capture.stream_name = rdai->capture.name;
1030 rdai->playback.rdai = rdai;
1031 rdai->capture.rdai = rdai;
1032 rsnd_rdai_channels_set(rdai, 2); /* default 2ch */
1033 rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */
1035 for (io_i = 0;; io_i++) {
1036 playback = of_parse_phandle(dai_np, "playback", io_i);
1037 capture = of_parse_phandle(dai_np, "capture", io_i);
1039 if (!playback && !capture)
1042 rsnd_parse_connect_ssi(rdai, playback, capture);
1043 rsnd_parse_connect_src(rdai, playback, capture);
1044 rsnd_parse_connect_ctu(rdai, playback, capture);
1045 rsnd_parse_connect_mix(rdai, playback, capture);
1046 rsnd_parse_connect_dvc(rdai, playback, capture);
1048 of_node_put(playback);
1049 of_node_put(capture);
1052 dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
1053 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ",
1054 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- ");
1057 static int rsnd_dai_probe(struct rsnd_priv *priv)
1059 struct device_node *dai_node;
1060 struct device_node *dai_np;
1061 struct snd_soc_dai_driver *rdrv;
1062 struct device *dev = rsnd_priv_to_dev(priv);
1063 struct rsnd_dai *rdai;
1068 dai_node = rsnd_dai_of_node(priv, &is_graph);
1070 nr = of_graph_get_endpoint_count(dai_node);
1072 nr = of_get_child_count(dai_node);
1077 rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL);
1078 rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL);
1083 priv->daidrv = rdrv;
1091 for_each_endpoint_of_node(dai_node, dai_np) {
1092 __rsnd_dai_probe(priv, dai_np, dai_i, is_graph);
1093 rsnd_ssi_parse_hdmi_connection(priv, dai_np, dai_i);
1097 for_each_child_of_node(dai_node, dai_np)
1098 __rsnd_dai_probe(priv, dai_np, dai_i++, is_graph);
1107 static int rsnd_hw_params(struct snd_pcm_substream *substream,
1108 struct snd_pcm_hw_params *hw_params)
1110 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1111 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1112 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1115 ret = rsnd_dai_call(hw_params, io, substream, hw_params);
1119 return snd_pcm_lib_malloc_pages(substream,
1120 params_buffer_bytes(hw_params));
1123 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
1125 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1126 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1127 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1128 snd_pcm_uframes_t pointer = 0;
1130 rsnd_dai_call(pointer, io, &pointer);
1135 static const struct snd_pcm_ops rsnd_pcm_ops = {
1136 .ioctl = snd_pcm_lib_ioctl,
1137 .hw_params = rsnd_hw_params,
1138 .hw_free = snd_pcm_lib_free_pages,
1139 .pointer = rsnd_pointer,
1145 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
1146 struct snd_ctl_elem_info *uinfo)
1148 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1151 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1152 uinfo->count = cfg->size;
1153 uinfo->value.enumerated.items = cfg->max;
1154 if (uinfo->value.enumerated.item >= cfg->max)
1155 uinfo->value.enumerated.item = cfg->max - 1;
1156 strlcpy(uinfo->value.enumerated.name,
1157 cfg->texts[uinfo->value.enumerated.item],
1158 sizeof(uinfo->value.enumerated.name));
1160 uinfo->count = cfg->size;
1161 uinfo->value.integer.min = 0;
1162 uinfo->value.integer.max = cfg->max;
1163 uinfo->type = (cfg->max == 1) ?
1164 SNDRV_CTL_ELEM_TYPE_BOOLEAN :
1165 SNDRV_CTL_ELEM_TYPE_INTEGER;
1171 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
1172 struct snd_ctl_elem_value *uc)
1174 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1177 for (i = 0; i < cfg->size; i++)
1179 uc->value.enumerated.item[i] = cfg->val[i];
1181 uc->value.integer.value[i] = cfg->val[i];
1186 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1187 struct snd_ctl_elem_value *uc)
1189 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1192 if (!cfg->accept(cfg->io))
1195 for (i = 0; i < cfg->size; i++) {
1197 change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1198 cfg->val[i] = uc->value.enumerated.item[i];
1200 change |= (uc->value.integer.value[i] != cfg->val[i]);
1201 cfg->val[i] = uc->value.integer.value[i];
1205 if (change && cfg->update)
1206 cfg->update(cfg->io, cfg->mod);
1211 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io)
1216 int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io)
1218 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
1223 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg)
1225 cfg->cfg.val = cfg->val;
1230 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg)
1232 cfg->cfg.val = &cfg->val;
1237 const char * const volume_ramp_rate[] = {
1238 "128 dB/1 step", /* 00000 */
1239 "64 dB/1 step", /* 00001 */
1240 "32 dB/1 step", /* 00010 */
1241 "16 dB/1 step", /* 00011 */
1242 "8 dB/1 step", /* 00100 */
1243 "4 dB/1 step", /* 00101 */
1244 "2 dB/1 step", /* 00110 */
1245 "1 dB/1 step", /* 00111 */
1246 "0.5 dB/1 step", /* 01000 */
1247 "0.25 dB/1 step", /* 01001 */
1248 "0.125 dB/1 step", /* 01010 = VOLUME_RAMP_MAX_MIX */
1249 "0.125 dB/2 steps", /* 01011 */
1250 "0.125 dB/4 steps", /* 01100 */
1251 "0.125 dB/8 steps", /* 01101 */
1252 "0.125 dB/16 steps", /* 01110 */
1253 "0.125 dB/32 steps", /* 01111 */
1254 "0.125 dB/64 steps", /* 10000 */
1255 "0.125 dB/128 steps", /* 10001 */
1256 "0.125 dB/256 steps", /* 10010 */
1257 "0.125 dB/512 steps", /* 10011 */
1258 "0.125 dB/1024 steps", /* 10100 */
1259 "0.125 dB/2048 steps", /* 10101 */
1260 "0.125 dB/4096 steps", /* 10110 */
1261 "0.125 dB/8192 steps", /* 10111 = VOLUME_RAMP_MAX_DVC */
1264 int rsnd_kctrl_new(struct rsnd_mod *mod,
1265 struct rsnd_dai_stream *io,
1266 struct snd_soc_pcm_runtime *rtd,
1267 const unsigned char *name,
1268 int (*accept)(struct rsnd_dai_stream *io),
1269 void (*update)(struct rsnd_dai_stream *io,
1270 struct rsnd_mod *mod),
1271 struct rsnd_kctrl_cfg *cfg,
1272 const char * const *texts,
1276 struct snd_card *card = rtd->card->snd_card;
1277 struct snd_kcontrol *kctrl;
1278 struct snd_kcontrol_new knew = {
1279 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1281 .info = rsnd_kctrl_info,
1283 .get = rsnd_kctrl_get,
1284 .put = rsnd_kctrl_put,
1288 if (size > RSND_MAX_CHANNELS)
1291 kctrl = snd_ctl_new1(&knew, cfg);
1295 ret = snd_ctl_add(card, kctrl);
1302 cfg->accept = accept;
1303 cfg->update = update;
1316 #define PREALLOC_BUFFER (32 * 1024)
1317 #define PREALLOC_BUFFER_MAX (32 * 1024)
1319 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1321 struct snd_soc_dai *dai = rtd->cpu_dai;
1322 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1325 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1329 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1333 return snd_pcm_lib_preallocate_pages_for_all(
1335 SNDRV_DMA_TYPE_CONTINUOUS,
1336 snd_dma_continuous_data(GFP_KERNEL),
1337 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1340 static const struct snd_soc_platform_driver rsnd_soc_platform = {
1341 .ops = &rsnd_pcm_ops,
1342 .pcm_new = rsnd_pcm_new,
1345 static const struct snd_soc_component_driver rsnd_soc_component = {
1349 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1350 struct rsnd_dai_stream *io)
1354 ret = rsnd_dai_call(probe, io, priv);
1355 if (ret == -EAGAIN) {
1356 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1357 struct rsnd_mod *mod;
1361 * Fallback to PIO mode
1365 * call "remove" for SSI/SRC/DVC
1366 * SSI will be switch to PIO mode if it was DMA mode
1369 * rsnd_ssi_fallback()
1371 rsnd_dai_call(remove, io, priv);
1374 * remove all mod from io
1375 * and, re connect ssi
1377 for_each_rsnd_mod(i, mod, io)
1378 rsnd_dai_disconnect(mod, io, i);
1379 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1384 rsnd_dai_call(fallback, io, priv);
1388 * DAI has SSI which is PIO mode only now.
1390 ret = rsnd_dai_call(probe, io, priv);
1399 static int rsnd_probe(struct platform_device *pdev)
1401 struct rsnd_priv *priv;
1402 struct device *dev = &pdev->dev;
1403 struct rsnd_dai *rdai;
1404 int (*probe_func[])(struct rsnd_priv *priv) = {
1422 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1427 priv->flags = (unsigned long)of_device_get_match_data(dev);
1428 spin_lock_init(&priv->lock);
1433 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1434 ret = probe_func[i](priv);
1439 for_each_rsnd_dai(rdai, priv, i) {
1440 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1442 goto exit_snd_probe;
1444 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1446 goto exit_snd_probe;
1449 dev_set_drvdata(dev, priv);
1454 ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1456 dev_err(dev, "cannot snd soc register\n");
1460 ret = snd_soc_register_component(dev, &rsnd_soc_component,
1461 priv->daidrv, rsnd_rdai_nr(priv));
1463 dev_err(dev, "cannot snd dai register\n");
1467 pm_runtime_enable(dev);
1469 dev_info(dev, "probed\n");
1473 snd_soc_unregister_platform(dev);
1475 for_each_rsnd_dai(rdai, priv, i) {
1476 rsnd_dai_call(remove, &rdai->playback, priv);
1477 rsnd_dai_call(remove, &rdai->capture, priv);
1483 static int rsnd_remove(struct platform_device *pdev)
1485 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1486 struct rsnd_dai *rdai;
1487 void (*remove_func[])(struct rsnd_priv *priv) = {
1499 pm_runtime_disable(&pdev->dev);
1501 for_each_rsnd_dai(rdai, priv, i) {
1502 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1503 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1506 for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1507 remove_func[i](priv);
1509 snd_soc_unregister_component(&pdev->dev);
1510 snd_soc_unregister_platform(&pdev->dev);
1515 static int rsnd_suspend(struct device *dev)
1517 struct rsnd_priv *priv = dev_get_drvdata(dev);
1519 rsnd_adg_clk_disable(priv);
1524 static int rsnd_resume(struct device *dev)
1526 struct rsnd_priv *priv = dev_get_drvdata(dev);
1528 rsnd_adg_clk_enable(priv);
1533 static const struct dev_pm_ops rsnd_pm_ops = {
1534 .suspend = rsnd_suspend,
1535 .resume = rsnd_resume,
1538 static struct platform_driver rsnd_driver = {
1540 .name = "rcar_sound",
1542 .of_match_table = rsnd_of_match,
1544 .probe = rsnd_probe,
1545 .remove = rsnd_remove,
1547 module_platform_driver(rsnd_driver);
1549 MODULE_LICENSE("GPL");
1550 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1551 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1552 MODULE_ALIAS("platform:rcar-pcm-audio");