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);
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 *ssiu = rsnd_io_to_mod_ssiu(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 : ssiu;
320 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
322 target = cmd ? cmd : ssiu;
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 struct rsnd_mod *rsnd_mod_next(int *iterator,
352 struct rsnd_dai_stream *io,
353 enum rsnd_mod_type *array,
356 struct rsnd_mod *mod;
357 enum rsnd_mod_type type;
358 int max = array ? array_size : RSND_MOD_MAX;
360 for (; *iterator < max; (*iterator)++) {
361 type = (array) ? array[*iterator] : *iterator;
372 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
406 static int rsnd_status_update(u32 *status,
407 int shift, int add, int timing)
409 u32 mask = 0xF << shift;
410 u8 val = (*status >> shift) & 0xF;
411 u8 next_val = (val + add) & 0xF;
412 int func_call = (val == timing);
414 if (next_val == 0xF) /* underflow case */
417 *status = (*status & ~mask) + (next_val << shift);
422 #define rsnd_dai_call(fn, io, param...) \
424 struct rsnd_priv *priv = rsnd_io_to_priv(io); \
425 struct device *dev = rsnd_priv_to_dev(priv); \
426 struct rsnd_mod *mod; \
427 int is_play = rsnd_io_is_play(io); \
429 enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \
430 for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \
432 u32 *status = mod->get_status(io, mod, types[i]); \
433 int func_call = rsnd_status_update(status, \
434 __rsnd_mod_shift_##fn, \
435 __rsnd_mod_add_##fn, \
436 __rsnd_mod_call_##fn); \
437 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \
438 rsnd_mod_name(mod), rsnd_mod_id(mod), *status, \
439 (func_call && (mod)->ops->fn) ? #fn : ""); \
440 if (func_call && (mod)->ops->fn) \
441 tmp = (mod)->ops->fn(mod, io, param); \
443 dev_err(dev, "%s[%d] : %s error %d\n", \
444 rsnd_mod_name(mod), rsnd_mod_id(mod), \
451 int rsnd_dai_connect(struct rsnd_mod *mod,
452 struct rsnd_dai_stream *io,
453 enum rsnd_mod_type type)
455 struct rsnd_priv *priv;
461 if (io->mod[type] == mod)
467 priv = rsnd_mod_to_priv(mod);
468 dev = rsnd_priv_to_dev(priv);
472 dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
473 rsnd_mod_name(mod), rsnd_mod_id(mod),
474 rsnd_io_is_play(io) ? "Playback" : "Capture");
479 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
480 struct rsnd_dai_stream *io,
481 enum rsnd_mod_type type)
483 io->mod[type] = NULL;
486 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
488 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
491 return priv->rdai + id;
494 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
495 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
497 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
499 return rsnd_rdai_get(priv, dai->id);
503 * rsnd_soc_dai functions
505 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
507 struct snd_pcm_substream *substream = io->substream;
508 struct snd_pcm_runtime *runtime = substream->runtime;
509 int pos = io->byte_pos + additional;
511 pos %= (runtime->periods * io->byte_per_period);
516 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
518 io->byte_pos += byte;
520 if (io->byte_pos >= io->next_period_byte) {
521 struct snd_pcm_substream *substream = io->substream;
522 struct snd_pcm_runtime *runtime = substream->runtime;
525 io->next_period_byte += io->byte_per_period;
527 if (io->period_pos >= runtime->periods) {
530 io->next_period_byte = io->byte_per_period;
539 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
541 struct snd_pcm_substream *substream = io->substream;
544 * this function should be called...
546 * - if rsnd_dai_pointer_update() returns true
547 * - without spin lock
550 snd_pcm_period_elapsed(substream);
553 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
554 struct snd_pcm_substream *substream)
556 struct snd_pcm_runtime *runtime = substream->runtime;
558 io->substream = substream;
561 io->byte_per_period = runtime->period_size *
563 samples_to_bytes(runtime, 1);
564 io->next_period_byte = io->byte_per_period;
567 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
569 io->substream = NULL;
573 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
575 struct snd_soc_pcm_runtime *rtd = substream->private_data;
581 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
582 struct snd_pcm_substream *substream)
584 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
585 return &rdai->playback;
587 return &rdai->capture;
590 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
591 struct snd_soc_dai *dai)
593 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
594 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
595 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
599 spin_lock_irqsave(&priv->lock, flags);
602 case SNDRV_PCM_TRIGGER_START:
603 case SNDRV_PCM_TRIGGER_RESUME:
604 rsnd_dai_stream_init(io, substream);
606 ret = rsnd_dai_call(init, io, priv);
608 goto dai_trigger_end;
610 ret = rsnd_dai_call(start, io, priv);
612 goto dai_trigger_end;
614 ret = rsnd_dai_call(irq, io, priv, 1);
616 goto dai_trigger_end;
619 case SNDRV_PCM_TRIGGER_STOP:
620 case SNDRV_PCM_TRIGGER_SUSPEND:
621 ret = rsnd_dai_call(irq, io, priv, 0);
623 ret |= rsnd_dai_call(stop, io, priv);
625 ret |= rsnd_dai_call(quit, io, priv);
627 rsnd_dai_stream_quit(io);
634 spin_unlock_irqrestore(&priv->lock, flags);
639 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
641 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
643 /* set master/slave audio interface */
644 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
645 case SND_SOC_DAIFMT_CBM_CFM:
646 rdai->clk_master = 0;
648 case SND_SOC_DAIFMT_CBS_CFS:
649 rdai->clk_master = 1; /* codec is slave, cpu is master */
656 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
657 case SND_SOC_DAIFMT_I2S:
659 rdai->data_alignment = 0;
660 rdai->frm_clk_inv = 0;
662 case SND_SOC_DAIFMT_LEFT_J:
664 rdai->data_alignment = 0;
665 rdai->frm_clk_inv = 1;
667 case SND_SOC_DAIFMT_RIGHT_J:
669 rdai->data_alignment = 1;
670 rdai->frm_clk_inv = 1;
674 /* set clock inversion */
675 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
676 case SND_SOC_DAIFMT_NB_IF:
677 rdai->frm_clk_inv = !rdai->frm_clk_inv;
679 case SND_SOC_DAIFMT_IB_NF:
680 rdai->bit_clk_inv = !rdai->bit_clk_inv;
682 case SND_SOC_DAIFMT_IB_IF:
683 rdai->bit_clk_inv = !rdai->bit_clk_inv;
684 rdai->frm_clk_inv = !rdai->frm_clk_inv;
686 case SND_SOC_DAIFMT_NB_NF:
694 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
695 u32 tx_mask, u32 rx_mask,
696 int slots, int slot_width)
698 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
699 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
700 struct device *dev = rsnd_priv_to_dev(priv);
704 /* TDM Extend Mode */
705 rsnd_set_slot(rdai, slots, 1);
708 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
715 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
716 struct snd_soc_dai *dai)
718 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
719 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
722 * call rsnd_dai_call without spinlock
724 return rsnd_dai_call(nolock_start, io, priv);
727 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
728 struct snd_soc_dai *dai)
730 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
731 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
734 * call rsnd_dai_call without spinlock
736 rsnd_dai_call(nolock_stop, io, priv);
739 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
740 .startup = rsnd_soc_dai_startup,
741 .shutdown = rsnd_soc_dai_shutdown,
742 .trigger = rsnd_soc_dai_trigger,
743 .set_fmt = rsnd_soc_dai_set_fmt,
744 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot,
747 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
748 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
749 struct device_node *node,
750 struct device_node *playback,
751 struct device_node *capture)
753 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
754 struct device_node *np;
755 struct rsnd_mod *mod;
762 for_each_child_of_node(node, np) {
763 mod = mod_get(priv, i);
765 rsnd_dai_connect(mod, &rdai->playback, mod->type);
767 rsnd_dai_connect(mod, &rdai->capture, mod->type);
774 static int rsnd_dai_probe(struct rsnd_priv *priv)
776 struct device_node *dai_node;
777 struct device_node *dai_np;
778 struct device_node *playback, *capture;
779 struct rsnd_dai_stream *io_playback;
780 struct rsnd_dai_stream *io_capture;
781 struct snd_soc_dai_driver *rdrv, *drv;
782 struct rsnd_dai *rdai;
783 struct device *dev = rsnd_priv_to_dev(priv);
787 dai_node = rsnd_dai_of_node(priv);
788 nr = of_get_child_count(dai_node);
791 goto rsnd_dai_probe_done;
794 rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL);
795 rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL);
796 if (!rdrv || !rdai) {
798 goto rsnd_dai_probe_done;
809 for_each_child_of_node(dai_node, dai_np) {
810 rdai = rsnd_rdai_get(priv, dai_i);
812 io_playback = &rdai->playback;
813 io_capture = &rdai->capture;
815 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
818 drv->name = rdai->name;
819 drv->ops = &rsnd_soc_dai_ops;
821 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE,
822 "DAI%d Playback", dai_i);
823 drv->playback.rates = RSND_RATES;
824 drv->playback.formats = RSND_FMTS;
825 drv->playback.channels_min = 2;
826 drv->playback.channels_max = 6;
827 drv->playback.stream_name = rdai->playback.name;
829 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
830 "DAI%d Capture", dai_i);
831 drv->capture.rates = RSND_RATES;
832 drv->capture.formats = RSND_FMTS;
833 drv->capture.channels_min = 2;
834 drv->capture.channels_max = 6;
835 drv->capture.stream_name = rdai->capture.name;
837 rdai->playback.rdai = rdai;
838 rdai->capture.rdai = rdai;
839 rsnd_set_slot(rdai, 2, 1); /* default */
841 for (io_i = 0;; io_i++) {
842 playback = of_parse_phandle(dai_np, "playback", io_i);
843 capture = of_parse_phandle(dai_np, "capture", io_i);
845 if (!playback && !capture)
848 rsnd_parse_connect_ssi(rdai, playback, capture);
849 rsnd_parse_connect_src(rdai, playback, capture);
850 rsnd_parse_connect_ctu(rdai, playback, capture);
851 rsnd_parse_connect_mix(rdai, playback, capture);
852 rsnd_parse_connect_dvc(rdai, playback, capture);
854 of_node_put(playback);
855 of_node_put(capture);
860 dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
861 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ",
862 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- ");
868 of_node_put(dai_node);
876 static struct snd_pcm_hardware rsnd_pcm_hardware = {
877 .info = SNDRV_PCM_INFO_INTERLEAVED |
878 SNDRV_PCM_INFO_MMAP |
879 SNDRV_PCM_INFO_MMAP_VALID,
880 .buffer_bytes_max = 64 * 1024,
881 .period_bytes_min = 32,
882 .period_bytes_max = 8192,
888 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
890 struct snd_pcm_runtime *runtime = substream->runtime;
893 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
895 ret = snd_pcm_hw_constraint_integer(runtime,
896 SNDRV_PCM_HW_PARAM_PERIODS);
901 static int rsnd_hw_params(struct snd_pcm_substream *substream,
902 struct snd_pcm_hw_params *hw_params)
904 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
905 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
906 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
909 ret = rsnd_dai_call(hw_params, io, substream, hw_params);
913 return snd_pcm_lib_malloc_pages(substream,
914 params_buffer_bytes(hw_params));
917 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
919 struct snd_pcm_runtime *runtime = substream->runtime;
920 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
921 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
922 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
924 return bytes_to_frames(runtime, io->byte_pos);
927 static struct snd_pcm_ops rsnd_pcm_ops = {
928 .open = rsnd_pcm_open,
929 .ioctl = snd_pcm_lib_ioctl,
930 .hw_params = rsnd_hw_params,
931 .hw_free = snd_pcm_lib_free_pages,
932 .pointer = rsnd_pointer,
938 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
939 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
940 struct snd_ctl_elem_info *uinfo)
942 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
945 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
946 uinfo->count = cfg->size;
947 uinfo->value.enumerated.items = cfg->max;
948 if (uinfo->value.enumerated.item >= cfg->max)
949 uinfo->value.enumerated.item = cfg->max - 1;
950 strlcpy(uinfo->value.enumerated.name,
951 cfg->texts[uinfo->value.enumerated.item],
952 sizeof(uinfo->value.enumerated.name));
954 uinfo->count = cfg->size;
955 uinfo->value.integer.min = 0;
956 uinfo->value.integer.max = cfg->max;
957 uinfo->type = (cfg->max == 1) ?
958 SNDRV_CTL_ELEM_TYPE_BOOLEAN :
959 SNDRV_CTL_ELEM_TYPE_INTEGER;
965 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
966 struct snd_ctl_elem_value *uc)
968 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
971 for (i = 0; i < cfg->size; i++)
973 uc->value.enumerated.item[i] = cfg->val[i];
975 uc->value.integer.value[i] = cfg->val[i];
980 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
981 struct snd_ctl_elem_value *uc)
983 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
984 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
987 for (i = 0; i < cfg->size; i++) {
989 change |= (uc->value.enumerated.item[i] != cfg->val[i]);
990 cfg->val[i] = uc->value.enumerated.item[i];
992 change |= (uc->value.integer.value[i] != cfg->val[i]);
993 cfg->val[i] = uc->value.integer.value[i];
997 if (change && cfg->update)
998 cfg->update(cfg->io, mod);
1003 static int __rsnd_kctrl_new(struct rsnd_mod *mod,
1004 struct rsnd_dai_stream *io,
1005 struct snd_soc_pcm_runtime *rtd,
1006 const unsigned char *name,
1007 struct rsnd_kctrl_cfg *cfg,
1008 void (*update)(struct rsnd_dai_stream *io,
1009 struct rsnd_mod *mod))
1011 struct snd_card *card = rtd->card->snd_card;
1012 struct snd_kcontrol *kctrl;
1013 struct snd_kcontrol_new knew = {
1014 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1016 .info = rsnd_kctrl_info,
1018 .get = rsnd_kctrl_get,
1019 .put = rsnd_kctrl_put,
1020 .private_value = (unsigned long)cfg,
1024 kctrl = snd_ctl_new1(&knew, mod);
1028 ret = snd_ctl_add(card, kctrl);
1030 snd_ctl_free_one(kctrl);
1034 cfg->update = update;
1042 int rsnd_kctrl_new_m(struct rsnd_mod *mod,
1043 struct rsnd_dai_stream *io,
1044 struct snd_soc_pcm_runtime *rtd,
1045 const unsigned char *name,
1046 void (*update)(struct rsnd_dai_stream *io,
1047 struct rsnd_mod *mod),
1048 struct rsnd_kctrl_cfg_m *_cfg,
1052 if (ch_size > RSND_MAX_CHANNELS)
1055 _cfg->cfg.max = max;
1056 _cfg->cfg.size = ch_size;
1057 _cfg->cfg.val = _cfg->val;
1058 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1061 int rsnd_kctrl_new_s(struct rsnd_mod *mod,
1062 struct rsnd_dai_stream *io,
1063 struct snd_soc_pcm_runtime *rtd,
1064 const unsigned char *name,
1065 void (*update)(struct rsnd_dai_stream *io,
1066 struct rsnd_mod *mod),
1067 struct rsnd_kctrl_cfg_s *_cfg,
1070 _cfg->cfg.max = max;
1072 _cfg->cfg.val = &_cfg->val;
1073 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1076 int rsnd_kctrl_new_e(struct rsnd_mod *mod,
1077 struct rsnd_dai_stream *io,
1078 struct snd_soc_pcm_runtime *rtd,
1079 const unsigned char *name,
1080 struct rsnd_kctrl_cfg_s *_cfg,
1081 void (*update)(struct rsnd_dai_stream *io,
1082 struct rsnd_mod *mod),
1083 const char * const *texts,
1086 _cfg->cfg.max = max;
1088 _cfg->cfg.val = &_cfg->val;
1089 _cfg->cfg.texts = texts;
1090 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1097 #define PREALLOC_BUFFER (32 * 1024)
1098 #define PREALLOC_BUFFER_MAX (32 * 1024)
1100 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1102 struct snd_soc_dai *dai = rtd->cpu_dai;
1103 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1106 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1110 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1114 return snd_pcm_lib_preallocate_pages_for_all(
1116 SNDRV_DMA_TYPE_CONTINUOUS,
1117 snd_dma_continuous_data(GFP_KERNEL),
1118 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1121 static struct snd_soc_platform_driver rsnd_soc_platform = {
1122 .ops = &rsnd_pcm_ops,
1123 .pcm_new = rsnd_pcm_new,
1126 static const struct snd_soc_component_driver rsnd_soc_component = {
1130 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1131 struct rsnd_dai_stream *io)
1135 ret = rsnd_dai_call(probe, io, priv);
1136 if (ret == -EAGAIN) {
1137 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1138 struct rsnd_mod *mod;
1142 * Fallback to PIO mode
1146 * call "remove" for SSI/SRC/DVC
1147 * SSI will be switch to PIO mode if it was DMA mode
1150 * rsnd_ssi_fallback()
1152 rsnd_dai_call(remove, io, priv);
1155 * remove all mod from io
1156 * and, re connect ssi
1158 for_each_rsnd_mod(i, mod, io)
1159 rsnd_dai_disconnect(mod, io, i);
1160 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1165 rsnd_dai_call(fallback, io, priv);
1169 * DAI has SSI which is PIO mode only now.
1171 ret = rsnd_dai_call(probe, io, priv);
1180 static int rsnd_probe(struct platform_device *pdev)
1182 struct rsnd_priv *priv;
1183 struct device *dev = &pdev->dev;
1184 struct rsnd_dai *rdai;
1185 int (*probe_func[])(struct rsnd_priv *priv) = {
1203 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1205 dev_err(dev, "priv allocate failed\n");
1210 priv->flags = (unsigned long)of_device_get_match_data(dev);
1211 spin_lock_init(&priv->lock);
1216 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1217 ret = probe_func[i](priv);
1222 for_each_rsnd_dai(rdai, priv, i) {
1223 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1225 goto exit_snd_probe;
1227 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1229 goto exit_snd_probe;
1232 dev_set_drvdata(dev, priv);
1237 ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1239 dev_err(dev, "cannot snd soc register\n");
1243 ret = snd_soc_register_component(dev, &rsnd_soc_component,
1244 priv->daidrv, rsnd_rdai_nr(priv));
1246 dev_err(dev, "cannot snd dai register\n");
1250 pm_runtime_enable(dev);
1252 dev_info(dev, "probed\n");
1256 snd_soc_unregister_platform(dev);
1258 for_each_rsnd_dai(rdai, priv, i) {
1259 rsnd_dai_call(remove, &rdai->playback, priv);
1260 rsnd_dai_call(remove, &rdai->capture, priv);
1266 static int rsnd_remove(struct platform_device *pdev)
1268 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1269 struct rsnd_dai *rdai;
1270 void (*remove_func[])(struct rsnd_priv *priv) = {
1282 pm_runtime_disable(&pdev->dev);
1284 for_each_rsnd_dai(rdai, priv, i) {
1285 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1286 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1289 for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1290 remove_func[i](priv);
1292 snd_soc_unregister_component(&pdev->dev);
1293 snd_soc_unregister_platform(&pdev->dev);
1298 static int rsnd_suspend(struct device *dev)
1300 struct rsnd_priv *priv = dev_get_drvdata(dev);
1302 rsnd_adg_clk_disable(priv);
1307 static int rsnd_resume(struct device *dev)
1309 struct rsnd_priv *priv = dev_get_drvdata(dev);
1311 rsnd_adg_clk_enable(priv);
1316 static struct dev_pm_ops rsnd_pm_ops = {
1317 .suspend = rsnd_suspend,
1318 .resume = rsnd_resume,
1321 static struct platform_driver rsnd_driver = {
1323 .name = "rcar_sound",
1325 .of_match_table = rsnd_of_match,
1327 .probe = rsnd_probe,
1328 .remove = rsnd_remove,
1330 module_platform_driver(rsnd_driver);
1332 MODULE_LICENSE("GPL");
1333 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1334 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1335 MODULE_ALIAS("platform:rcar-pcm-audio");