2 * Renesas R-Car SRU/SCU/SSIU/SSI support
4 * Copyright (C) 2013 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
8 * Kuninori Morimoto <morimoto.kuninori@renesas.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
16 * Renesas R-Car sound device structure
20 * SRU : Sound Routing Unit
21 * - SRC : Sampling Rate Converter
23 * - CTU : Channel Count Conversion Unit
25 * - DVC : Digital Volume and Mute Function
26 * - SSI : Serial Sound Interface
30 * SCU : Sampling Rate Converter Unit
31 * - SRC : Sampling Rate Converter
33 * - CTU : Channel Count Conversion Unit
35 * - DVC : Digital Volume and Mute Function
36 * SSIU : Serial Sound Interface Unit
37 * - SSI : Serial Sound Interface
45 * | ** this depends on Gen1/Gen2
49 * | ** these depend on data path
50 * | ** gen and platform data control it
54 * | +- playback -> [mod] -> [mod] -> [mod] -> ...
57 * | +- capture -> [mod] -> [mod] -> [mod] -> ...
61 * | +- playback -> [mod] -> [mod] -> [mod] -> ...
64 * | +- capture -> [mod] -> [mod] -> [mod] -> ...
67 * | ** these control ssi
76 * | ** these control src
86 * for_each_rsnd_dai(xx, priv, xx)
87 * rdai[0] => rdai[1] => rdai[2] => ...
89 * for_each_rsnd_mod(xx, rdai, xx)
90 * [mod] => [mod] => [mod] => ...
92 * rsnd_dai_call(xxx, fn )
93 * [mod]->fn() -> [mod]->fn() -> [mod]->fn()...
96 #include <linux/pm_runtime.h>
99 #define RSND_RATES SNDRV_PCM_RATE_8000_96000
100 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
102 static const struct rsnd_of_data rsnd_of_data_gen1 = {
106 static const struct rsnd_of_data rsnd_of_data_gen2 = {
110 static const struct of_device_id rsnd_of_match[] = {
111 { .compatible = "renesas,rcar_sound-gen1", .data = &rsnd_of_data_gen1 },
112 { .compatible = "renesas,rcar_sound-gen2", .data = &rsnd_of_data_gen2 },
113 { .compatible = "renesas,rcar_sound-gen3", .data = &rsnd_of_data_gen2 }, /* gen2 compatible */
116 MODULE_DEVICE_TABLE(of, rsnd_of_match);
119 * rsnd_platform functions
121 #define rsnd_platform_call(priv, dai, func, param...) \
122 (!(priv->info->func) ? 0 : \
123 priv->info->func(param))
125 #define rsnd_is_enable_path(io, name) \
126 ((io)->info ? (io)->info->name : NULL)
127 #define rsnd_info_id(priv, io, name) \
128 ((io)->info->name - priv->info->name##_info)
130 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
132 if (mod->type != type) {
133 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
134 struct device *dev = rsnd_priv_to_dev(priv);
136 dev_warn(dev, "%s[%d] is not your expected module\n",
137 rsnd_mod_name(mod), rsnd_mod_id(mod));
144 char *rsnd_mod_name(struct rsnd_mod *mod)
146 if (!mod || !mod->ops)
149 return mod->ops->name;
152 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
153 struct rsnd_mod *mod)
155 if (!mod || !mod->ops || !mod->ops->dma_req)
158 return mod->ops->dma_req(io, mod);
161 int rsnd_mod_init(struct rsnd_priv *priv,
162 struct rsnd_mod *mod,
163 struct rsnd_mod_ops *ops,
165 enum rsnd_mod_type type,
168 int ret = clk_prepare(clk);
182 void rsnd_mod_quit(struct rsnd_mod *mod)
185 clk_unprepare(mod->clk);
188 void rsnd_mod_interrupt(struct rsnd_mod *mod,
189 void (*callback)(struct rsnd_mod *mod,
190 struct rsnd_dai_stream *io))
192 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
193 struct rsnd_dai_stream *io;
194 struct rsnd_dai *rdai;
197 for_each_rsnd_dai(rdai, priv, i) {
198 io = &rdai->playback;
199 if (mod == io->mod[mod->type])
203 if (mod == io->mod[mod->type])
208 int rsnd_io_is_working(struct rsnd_dai_stream *io)
210 /* see rsnd_dai_stream_init/quit() */
211 return !!io->substream;
217 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
219 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
220 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
221 struct device *dev = rsnd_priv_to_dev(priv);
222 u32 adinr = runtime->channels;
224 switch (runtime->sample_bits) {
232 dev_warn(dev, "not supported sample bits\n");
239 u32 rsnd_get_adinr_chan(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
241 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
242 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
243 struct device *dev = rsnd_priv_to_dev(priv);
244 u32 chan = runtime->channels;
254 dev_warn(dev, "not supported channel\n");
265 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
267 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
268 struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
269 struct rsnd_mod *target = src ? src : ssi;
270 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
271 u32 val = 0x76543210;
274 mask <<= runtime->channels * 4;
277 switch (runtime->sample_bits) {
279 val |= 0x67452301 & ~mask;
282 val |= 0x76543210 & ~mask;
287 * exchange channeles on SRC if possible,
288 * otherwise, R/L volume settings on DVC
289 * changes inverted channels
300 #define rsnd_mod_call(mod, io, func, param...) \
302 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \
303 struct device *dev = rsnd_priv_to_dev(priv); \
304 u32 mask = 0xF << __rsnd_mod_shift_##func; \
305 u8 val = (mod->status >> __rsnd_mod_shift_##func) & 0xF; \
306 u8 add = ((val + __rsnd_mod_add_##func) & 0xF); \
308 int call = (val == __rsnd_mod_call_##func) && (mod)->ops->func; \
309 mod->status = (mod->status & ~mask) + \
310 (add << __rsnd_mod_shift_##func); \
311 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \
312 rsnd_mod_name(mod), rsnd_mod_id(mod), \
313 mod->status, call ? #func : ""); \
315 ret = (mod)->ops->func(mod, io, param); \
319 #define rsnd_dai_call(fn, io, param...) \
321 struct rsnd_mod *mod; \
323 for (i = 0; i < RSND_MOD_MAX; i++) { \
324 mod = (io)->mod[i]; \
327 ret |= rsnd_mod_call(mod, io, fn, param); \
332 static int rsnd_dai_connect(struct rsnd_mod *mod,
333 struct rsnd_dai_stream *io)
335 struct rsnd_priv *priv;
341 priv = rsnd_mod_to_priv(mod);
342 dev = rsnd_priv_to_dev(priv);
344 io->mod[mod->type] = mod;
346 dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
347 rsnd_mod_name(mod), rsnd_mod_id(mod),
348 rsnd_io_is_play(io) ? "Playback" : "Capture");
353 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
354 struct rsnd_dai_stream *io)
356 io->mod[mod->type] = NULL;
359 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
361 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
364 return priv->rdai + id;
367 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
368 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
370 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
372 return rsnd_rdai_get(priv, dai->id);
376 * rsnd_soc_dai functions
378 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
380 struct snd_pcm_substream *substream = io->substream;
381 struct snd_pcm_runtime *runtime = substream->runtime;
382 int pos = io->byte_pos + additional;
384 pos %= (runtime->periods * io->byte_per_period);
389 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
391 io->byte_pos += byte;
393 if (io->byte_pos >= io->next_period_byte) {
394 struct snd_pcm_substream *substream = io->substream;
395 struct snd_pcm_runtime *runtime = substream->runtime;
398 io->next_period_byte += io->byte_per_period;
400 if (io->period_pos >= runtime->periods) {
403 io->next_period_byte = io->byte_per_period;
412 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
414 struct snd_pcm_substream *substream = io->substream;
417 * this function should be called...
419 * - if rsnd_dai_pointer_update() returns true
420 * - without spin lock
423 snd_pcm_period_elapsed(substream);
426 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
427 struct snd_pcm_substream *substream)
429 struct snd_pcm_runtime *runtime = substream->runtime;
431 io->substream = substream;
434 io->byte_per_period = runtime->period_size *
436 samples_to_bytes(runtime, 1);
437 io->next_period_byte = io->byte_per_period;
440 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
442 io->substream = NULL;
446 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
448 struct snd_soc_pcm_runtime *rtd = substream->private_data;
454 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
455 struct snd_pcm_substream *substream)
457 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
458 return &rdai->playback;
460 return &rdai->capture;
463 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
464 struct snd_soc_dai *dai)
466 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
467 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
468 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
469 int ssi_id = rsnd_mod_id(rsnd_io_to_mod_ssi(io));
473 spin_lock_irqsave(&priv->lock, flags);
476 case SNDRV_PCM_TRIGGER_START:
477 rsnd_dai_stream_init(io, substream);
479 ret = rsnd_platform_call(priv, dai, start, ssi_id);
481 goto dai_trigger_end;
483 ret = rsnd_dai_call(init, io, priv);
485 goto dai_trigger_end;
487 ret = rsnd_dai_call(start, io, priv);
489 goto dai_trigger_end;
491 case SNDRV_PCM_TRIGGER_STOP:
492 ret = rsnd_dai_call(stop, io, priv);
494 ret |= rsnd_dai_call(quit, io, priv);
496 ret |= rsnd_platform_call(priv, dai, stop, ssi_id);
498 rsnd_dai_stream_quit(io);
505 spin_unlock_irqrestore(&priv->lock, flags);
510 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
512 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
514 /* set master/slave audio interface */
515 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
516 case SND_SOC_DAIFMT_CBM_CFM:
517 rdai->clk_master = 0;
519 case SND_SOC_DAIFMT_CBS_CFS:
520 rdai->clk_master = 1; /* codec is slave, cpu is master */
527 rdai->bit_clk_inv = 0;
528 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
529 case SND_SOC_DAIFMT_I2S:
531 rdai->data_alignment = 0;
532 rdai->frm_clk_inv = 0;
534 case SND_SOC_DAIFMT_LEFT_J:
536 rdai->data_alignment = 0;
537 rdai->frm_clk_inv = 1;
539 case SND_SOC_DAIFMT_RIGHT_J:
541 rdai->data_alignment = 1;
542 rdai->frm_clk_inv = 1;
546 /* set clock inversion */
547 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
548 case SND_SOC_DAIFMT_NB_IF:
549 rdai->bit_clk_inv = rdai->bit_clk_inv;
550 rdai->frm_clk_inv = !rdai->frm_clk_inv;
552 case SND_SOC_DAIFMT_IB_NF:
553 rdai->bit_clk_inv = !rdai->bit_clk_inv;
554 rdai->frm_clk_inv = rdai->frm_clk_inv;
556 case SND_SOC_DAIFMT_IB_IF:
557 rdai->bit_clk_inv = !rdai->bit_clk_inv;
558 rdai->frm_clk_inv = !rdai->frm_clk_inv;
560 case SND_SOC_DAIFMT_NB_NF:
568 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
569 .trigger = rsnd_soc_dai_trigger,
570 .set_fmt = rsnd_soc_dai_set_fmt,
573 #define rsnd_path_add(priv, io, type) \
575 struct rsnd_mod *mod; \
579 if (rsnd_is_enable_path(io, type)) { \
580 id = rsnd_info_id(priv, io, type); \
582 mod = rsnd_##type##_mod_get(priv, id); \
583 ret = rsnd_dai_connect(mod, io); \
589 #define rsnd_path_remove(priv, io, type) \
591 struct rsnd_mod *mod; \
594 if (rsnd_is_enable_path(io, type)) { \
595 id = rsnd_info_id(priv, io, type); \
597 mod = rsnd_##type##_mod_get(priv, id); \
598 rsnd_dai_disconnect(mod, io); \
603 void rsnd_path_parse(struct rsnd_priv *priv,
604 struct rsnd_dai_stream *io)
606 struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
607 struct rsnd_mod *mix = rsnd_io_to_mod_mix(io);
608 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
609 struct rsnd_mod *cmd;
610 struct device *dev = rsnd_priv_to_dev(priv);
613 /* Gen1 is not supported */
614 if (rsnd_is_gen1(priv))
621 struct rsnd_dai *rdai;
633 * it is assuming that integrater is well understanding about
634 * data path. Here doesn't check impossible connection,
638 for_each_rsnd_dai(rdai, priv, i) {
639 io = &rdai->playback;
640 if (mix == rsnd_io_to_mod_mix(io))
641 data |= path[rsnd_mod_id(src)];
644 if (mix == rsnd_io_to_mod_mix(io))
645 data |= path[rsnd_mod_id(src)];
649 * We can't use ctu = rsnd_io_ctu() here.
650 * Since, ID of dvc/mix are 0 or 1 (= same as CMD number)
651 * but ctu IDs are 0 - 7 (= CTU00 - CTU13)
664 data = path[rsnd_mod_id(src)];
669 dev_dbg(dev, "ctu/mix path = 0x%08x", data);
671 rsnd_mod_write(cmd, CMD_ROUTE_SLCT, data);
673 rsnd_mod_write(cmd, CMD_CTRL, 0x10);
676 static int rsnd_path_init(struct rsnd_priv *priv,
677 struct rsnd_dai *rdai,
678 struct rsnd_dai_stream *io)
683 * Gen1 is created by SRU/SSI, and this SRU is base module of
684 * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU)
687 * Gen1 SRU = Gen2 SCU + SSIU + etc
689 * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
694 ret = rsnd_path_add(priv, io, ssi);
699 ret = rsnd_path_add(priv, io, src);
704 ret = rsnd_path_add(priv, io, ctu);
709 ret = rsnd_path_add(priv, io, mix);
714 ret = rsnd_path_add(priv, io, dvc);
721 static void rsnd_of_parse_dai(struct platform_device *pdev,
722 const struct rsnd_of_data *of_data,
723 struct rsnd_priv *priv)
725 struct device_node *dai_node, *dai_np;
726 struct device_node *ssi_node, *ssi_np;
727 struct device_node *src_node, *src_np;
728 struct device_node *ctu_node, *ctu_np;
729 struct device_node *mix_node, *mix_np;
730 struct device_node *dvc_node, *dvc_np;
731 struct device_node *playback, *capture;
732 struct rsnd_dai_platform_info *dai_info;
733 struct rcar_snd_info *info = rsnd_priv_to_info(priv);
734 struct device *dev = &pdev->dev;
736 int dai_i, ssi_i, src_i, ctu_i, mix_i, dvc_i;
741 dai_node = of_get_child_by_name(dev->of_node, "rcar_sound,dai");
745 nr = of_get_child_count(dai_node);
749 dai_info = devm_kzalloc(dev,
750 sizeof(struct rsnd_dai_platform_info) * nr,
753 dev_err(dev, "dai info allocation error\n");
757 info->dai_info_nr = nr;
758 info->dai_info = dai_info;
760 ssi_node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi");
761 src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src");
762 ctu_node = of_get_child_by_name(dev->of_node, "rcar_sound,ctu");
763 mix_node = of_get_child_by_name(dev->of_node, "rcar_sound,mix");
764 dvc_node = of_get_child_by_name(dev->of_node, "rcar_sound,dvc");
766 #define mod_parse(name) \
768 struct rsnd_##name##_platform_info *name##_info; \
771 for_each_child_of_node(name##_node, name##_np) { \
772 name##_info = info->name##_info + name##_i; \
774 if (name##_np == playback) \
775 dai_info->playback.name = name##_info; \
776 if (name##_np == capture) \
777 dai_info->capture.name = name##_info; \
787 for_each_child_of_node(dai_node, dai_np) {
788 dai_info = info->dai_info + dai_i;
792 playback = of_parse_phandle(dai_np, "playback", i);
793 capture = of_parse_phandle(dai_np, "capture", i);
795 if (!playback && !capture)
804 of_node_put(playback);
805 of_node_put(capture);
812 static int rsnd_dai_probe(struct platform_device *pdev,
813 const struct rsnd_of_data *of_data,
814 struct rsnd_priv *priv)
816 struct snd_soc_dai_driver *drv;
817 struct rcar_snd_info *info = rsnd_priv_to_info(priv);
818 struct rsnd_dai *rdai;
819 struct rsnd_ssi_platform_info *pmod, *cmod;
820 struct device *dev = rsnd_priv_to_dev(priv);
824 rsnd_of_parse_dai(pdev, of_data, priv);
826 dai_nr = info->dai_info_nr;
828 dev_err(dev, "no dai\n");
832 drv = devm_kzalloc(dev, sizeof(*drv) * dai_nr, GFP_KERNEL);
833 rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL);
835 dev_err(dev, "dai allocate failed\n");
839 priv->rdai_nr = dai_nr;
843 for (i = 0; i < dai_nr; i++) {
845 pmod = info->dai_info[i].playback.ssi;
846 cmod = info->dai_info[i].capture.ssi;
851 snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i);
855 * init snd_soc_dai_driver
857 drv[i].name = rdai[i].name;
858 drv[i].ops = &rsnd_soc_dai_ops;
860 snprintf(rdai[i].playback.name, RSND_DAI_NAME_SIZE,
861 "DAI%d Playback", i);
863 drv[i].playback.rates = RSND_RATES;
864 drv[i].playback.formats = RSND_FMTS;
865 drv[i].playback.channels_min = 2;
866 drv[i].playback.channels_max = 2;
867 drv[i].playback.stream_name = rdai[i].playback.name;
869 rdai[i].playback.info = &info->dai_info[i].playback;
870 rdai[i].playback.rdai = rdai + i;
871 rsnd_path_init(priv, &rdai[i], &rdai[i].playback);
874 snprintf(rdai[i].capture.name, RSND_DAI_NAME_SIZE,
877 drv[i].capture.rates = RSND_RATES;
878 drv[i].capture.formats = RSND_FMTS;
879 drv[i].capture.channels_min = 2;
880 drv[i].capture.channels_max = 2;
881 drv[i].capture.stream_name = rdai[i].capture.name;
883 rdai[i].capture.info = &info->dai_info[i].capture;
884 rdai[i].capture.rdai = rdai + i;
885 rsnd_path_init(priv, &rdai[i], &rdai[i].capture);
888 dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name,
889 pmod ? "play" : " -- ",
890 cmod ? "capture" : " -- ");
899 static struct snd_pcm_hardware rsnd_pcm_hardware = {
900 .info = SNDRV_PCM_INFO_INTERLEAVED |
901 SNDRV_PCM_INFO_MMAP |
902 SNDRV_PCM_INFO_MMAP_VALID,
903 .buffer_bytes_max = 64 * 1024,
904 .period_bytes_min = 32,
905 .period_bytes_max = 8192,
911 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
913 struct snd_pcm_runtime *runtime = substream->runtime;
916 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
918 ret = snd_pcm_hw_constraint_integer(runtime,
919 SNDRV_PCM_HW_PARAM_PERIODS);
924 static int rsnd_hw_params(struct snd_pcm_substream *substream,
925 struct snd_pcm_hw_params *hw_params)
927 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
928 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
929 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
932 ret = rsnd_dai_call(hw_params, io, substream, hw_params);
936 return snd_pcm_lib_malloc_pages(substream,
937 params_buffer_bytes(hw_params));
940 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
942 struct snd_pcm_runtime *runtime = substream->runtime;
943 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
944 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
945 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
947 return bytes_to_frames(runtime, io->byte_pos);
950 static struct snd_pcm_ops rsnd_pcm_ops = {
951 .open = rsnd_pcm_open,
952 .ioctl = snd_pcm_lib_ioctl,
953 .hw_params = rsnd_hw_params,
954 .hw_free = snd_pcm_lib_free_pages,
955 .pointer = rsnd_pointer,
961 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
962 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
963 struct snd_ctl_elem_info *uinfo)
965 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
968 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
969 uinfo->count = cfg->size;
970 uinfo->value.enumerated.items = cfg->max;
971 if (uinfo->value.enumerated.item >= cfg->max)
972 uinfo->value.enumerated.item = cfg->max - 1;
973 strlcpy(uinfo->value.enumerated.name,
974 cfg->texts[uinfo->value.enumerated.item],
975 sizeof(uinfo->value.enumerated.name));
977 uinfo->count = cfg->size;
978 uinfo->value.integer.min = 0;
979 uinfo->value.integer.max = cfg->max;
980 uinfo->type = (cfg->max == 1) ?
981 SNDRV_CTL_ELEM_TYPE_BOOLEAN :
982 SNDRV_CTL_ELEM_TYPE_INTEGER;
988 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
989 struct snd_ctl_elem_value *uc)
991 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
994 for (i = 0; i < cfg->size; i++)
996 uc->value.enumerated.item[i] = cfg->val[i];
998 uc->value.integer.value[i] = cfg->val[i];
1003 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1004 struct snd_ctl_elem_value *uc)
1006 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
1007 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
1010 for (i = 0; i < cfg->size; i++) {
1012 change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1013 cfg->val[i] = uc->value.enumerated.item[i];
1015 change |= (uc->value.integer.value[i] != cfg->val[i]);
1016 cfg->val[i] = uc->value.integer.value[i];
1020 if (change && cfg->update)
1021 cfg->update(cfg->io, mod);
1026 static int __rsnd_kctrl_new(struct rsnd_mod *mod,
1027 struct rsnd_dai_stream *io,
1028 struct snd_soc_pcm_runtime *rtd,
1029 const unsigned char *name,
1030 struct rsnd_kctrl_cfg *cfg,
1031 void (*update)(struct rsnd_dai_stream *io,
1032 struct rsnd_mod *mod))
1034 struct snd_soc_card *soc_card = rtd->card;
1035 struct snd_card *card = rtd->card->snd_card;
1036 struct snd_kcontrol *kctrl;
1037 struct snd_kcontrol_new knew = {
1038 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1040 .info = rsnd_kctrl_info,
1041 .index = rtd - soc_card->rtd,
1042 .get = rsnd_kctrl_get,
1043 .put = rsnd_kctrl_put,
1044 .private_value = (unsigned long)cfg,
1048 kctrl = snd_ctl_new1(&knew, mod);
1052 ret = snd_ctl_add(card, kctrl);
1056 cfg->update = update;
1064 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg)
1066 snd_ctl_remove(cfg->card, cfg->kctrl);
1069 int rsnd_kctrl_new_m(struct rsnd_mod *mod,
1070 struct rsnd_dai_stream *io,
1071 struct snd_soc_pcm_runtime *rtd,
1072 const unsigned char *name,
1073 void (*update)(struct rsnd_dai_stream *io,
1074 struct rsnd_mod *mod),
1075 struct rsnd_kctrl_cfg_m *_cfg,
1078 _cfg->cfg.max = max;
1079 _cfg->cfg.size = RSND_DVC_CHANNELS;
1080 _cfg->cfg.val = _cfg->val;
1081 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1084 int rsnd_kctrl_new_s(struct rsnd_mod *mod,
1085 struct rsnd_dai_stream *io,
1086 struct snd_soc_pcm_runtime *rtd,
1087 const unsigned char *name,
1088 void (*update)(struct rsnd_dai_stream *io,
1089 struct rsnd_mod *mod),
1090 struct rsnd_kctrl_cfg_s *_cfg,
1093 _cfg->cfg.max = max;
1095 _cfg->cfg.val = &_cfg->val;
1096 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1099 int rsnd_kctrl_new_e(struct rsnd_mod *mod,
1100 struct rsnd_dai_stream *io,
1101 struct snd_soc_pcm_runtime *rtd,
1102 const unsigned char *name,
1103 struct rsnd_kctrl_cfg_s *_cfg,
1104 void (*update)(struct rsnd_dai_stream *io,
1105 struct rsnd_mod *mod),
1106 const char * const *texts,
1109 _cfg->cfg.max = max;
1111 _cfg->cfg.val = &_cfg->val;
1112 _cfg->cfg.texts = texts;
1113 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1120 #define PREALLOC_BUFFER (32 * 1024)
1121 #define PREALLOC_BUFFER_MAX (32 * 1024)
1123 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1125 struct snd_soc_dai *dai = rtd->cpu_dai;
1126 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1129 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1133 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1137 return snd_pcm_lib_preallocate_pages_for_all(
1140 rtd->card->snd_card->dev,
1141 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1144 static struct snd_soc_platform_driver rsnd_soc_platform = {
1145 .ops = &rsnd_pcm_ops,
1146 .pcm_new = rsnd_pcm_new,
1149 static const struct snd_soc_component_driver rsnd_soc_component = {
1153 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1154 struct rsnd_dai_stream *io)
1158 ret = rsnd_dai_call(probe, io, priv);
1159 if (ret == -EAGAIN) {
1161 * Fallback to PIO mode
1165 * call "remove" for SSI/SRC/DVC
1166 * SSI will be switch to PIO mode if it was DMA mode
1169 * rsnd_ssi_fallback()
1171 rsnd_dai_call(remove, io, priv);
1174 * remove SRC/DVC from DAI,
1176 rsnd_path_remove(priv, io, src);
1177 rsnd_path_remove(priv, io, dvc);
1182 rsnd_dai_call(fallback, io, priv);
1186 * DAI has SSI which is PIO mode only now.
1188 ret = rsnd_dai_call(probe, io, priv);
1197 static int rsnd_probe(struct platform_device *pdev)
1199 struct rcar_snd_info *info;
1200 struct rsnd_priv *priv;
1201 struct device *dev = &pdev->dev;
1202 struct rsnd_dai *rdai;
1203 const struct of_device_id *of_id = of_match_device(rsnd_of_match, dev);
1204 const struct rsnd_of_data *of_data;
1205 int (*probe_func[])(struct platform_device *pdev,
1206 const struct rsnd_of_data *of_data,
1207 struct rsnd_priv *priv) = {
1220 info = devm_kzalloc(&pdev->dev, sizeof(struct rcar_snd_info),
1224 of_data = of_id->data;
1229 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1231 dev_err(dev, "priv allocate failed\n");
1237 spin_lock_init(&priv->lock);
1242 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1243 ret = probe_func[i](pdev, of_data, priv);
1248 for_each_rsnd_dai(rdai, priv, i) {
1249 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1251 goto exit_snd_probe;
1253 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1255 goto exit_snd_probe;
1258 dev_set_drvdata(dev, priv);
1263 ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1265 dev_err(dev, "cannot snd soc register\n");
1269 ret = snd_soc_register_component(dev, &rsnd_soc_component,
1270 priv->daidrv, rsnd_rdai_nr(priv));
1272 dev_err(dev, "cannot snd dai register\n");
1276 pm_runtime_enable(dev);
1278 dev_info(dev, "probed\n");
1282 snd_soc_unregister_platform(dev);
1284 for_each_rsnd_dai(rdai, priv, i) {
1285 rsnd_dai_call(remove, &rdai->playback, priv);
1286 rsnd_dai_call(remove, &rdai->capture, priv);
1292 static int rsnd_remove(struct platform_device *pdev)
1294 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1295 struct rsnd_dai *rdai;
1296 void (*remove_func[])(struct platform_device *pdev,
1297 struct rsnd_priv *priv) = {
1306 pm_runtime_disable(&pdev->dev);
1308 for_each_rsnd_dai(rdai, priv, i) {
1309 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1310 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1313 for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1314 remove_func[i](pdev, priv);
1316 snd_soc_unregister_component(&pdev->dev);
1317 snd_soc_unregister_platform(&pdev->dev);
1322 static struct platform_driver rsnd_driver = {
1324 .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");