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>
97 #include <linux/shdma-base.h>
100 #define RSND_RATES SNDRV_PCM_RATE_8000_96000
101 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
103 static struct rsnd_of_data rsnd_of_data_gen1
= {
107 static struct rsnd_of_data rsnd_of_data_gen2
= {
111 static struct of_device_id rsnd_of_match
[] = {
112 { .compatible
= "renesas,rcar_sound-gen1", .data
= &rsnd_of_data_gen1
},
113 { .compatible
= "renesas,rcar_sound-gen2", .data
= &rsnd_of_data_gen2
},
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)
133 char *rsnd_mod_name(struct rsnd_mod
*mod
)
135 if (!mod
|| !mod
->ops
)
138 return mod
->ops
->name
;
141 char *rsnd_mod_dma_name(struct rsnd_mod
*mod
)
143 if (!mod
|| !mod
->ops
)
146 if (!mod
->ops
->dma_name
)
147 return mod
->ops
->name
;
149 return mod
->ops
->dma_name(mod
);
152 void rsnd_mod_init(struct rsnd_mod
*mod
,
153 struct rsnd_mod_ops
*ops
,
155 enum rsnd_mod_type type
,
167 void rsnd_dma_stop(struct rsnd_dma
*dma
)
169 dmaengine_terminate_all(dma
->chan
);
172 static void rsnd_dma_complete(void *data
)
174 struct rsnd_dma
*dma
= (struct rsnd_dma
*)data
;
175 struct rsnd_mod
*mod
= rsnd_dma_to_mod(dma
);
176 struct rsnd_dai_stream
*io
= rsnd_mod_to_io(mod
);
179 * Renesas sound Gen1 needs 1 DMAC,
181 * In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri.
182 * But, Audio-DMAC-peri-peri doesn't have interrupt,
183 * and this driver is assuming that here.
185 * If Audio-DMAC-peri-peri has interrpt,
186 * rsnd_dai_pointer_update() will be called twice,
187 * ant it will breaks io->byte_pos
190 rsnd_dai_pointer_update(io
, io
->byte_per_period
);
193 void rsnd_dma_start(struct rsnd_dma
*dma
)
195 struct rsnd_mod
*mod
= rsnd_dma_to_mod(dma
);
196 struct rsnd_priv
*priv
= rsnd_mod_to_priv(mod
);
197 struct rsnd_dai_stream
*io
= rsnd_mod_to_io(mod
);
198 struct snd_pcm_substream
*substream
= io
->substream
;
199 struct device
*dev
= rsnd_priv_to_dev(priv
);
200 struct dma_async_tx_descriptor
*desc
;
202 desc
= dmaengine_prep_dma_cyclic(dma
->chan
,
203 (dma
->addr
) ? dma
->addr
:
204 substream
->runtime
->dma_addr
,
205 snd_pcm_lib_buffer_bytes(substream
),
206 snd_pcm_lib_period_bytes(substream
),
208 DMA_PREP_INTERRUPT
| DMA_CTRL_ACK
);
211 dev_err(dev
, "dmaengine_prep_slave_sg() fail\n");
215 desc
->callback
= rsnd_dma_complete
;
216 desc
->callback_param
= dma
;
218 if (dmaengine_submit(desc
) < 0) {
219 dev_err(dev
, "dmaengine_submit() fail\n");
223 dma_async_issue_pending(dma
->chan
);
226 int rsnd_dma_available(struct rsnd_dma
*dma
)
231 #define DMA_NAME_SIZE 16
232 #define MOD_MAX 4 /* MEM/SSI/SRC/DVC */
233 static int _rsnd_dma_of_name(char *dma_name
, struct rsnd_mod
*mod
)
236 return snprintf(dma_name
, DMA_NAME_SIZE
/ 2, "%s%d",
237 rsnd_mod_dma_name(mod
), rsnd_mod_id(mod
));
239 return snprintf(dma_name
, DMA_NAME_SIZE
/ 2, "mem");
243 static void rsnd_dma_of_name(struct rsnd_mod
*mod_from
,
244 struct rsnd_mod
*mod_to
,
249 index
= _rsnd_dma_of_name(dma_name
+ index
, mod_from
);
250 *(dma_name
+ index
++) = '_';
251 index
= _rsnd_dma_of_name(dma_name
+ index
, mod_to
);
254 static void rsnd_dma_of_path(struct rsnd_dma
*dma
,
256 struct rsnd_mod
**mod_from
,
257 struct rsnd_mod
**mod_to
)
259 struct rsnd_mod
*this = rsnd_dma_to_mod(dma
);
260 struct rsnd_dai_stream
*io
= rsnd_mod_to_io(this);
261 struct rsnd_mod
*ssi
= rsnd_io_to_mod_ssi(io
);
262 struct rsnd_mod
*src
= rsnd_io_to_mod_src(io
);
263 struct rsnd_mod
*dvc
= rsnd_io_to_mod_dvc(io
);
264 struct rsnd_mod
*mod
[MOD_MAX
];
268 for (i
= 0; i
< MOD_MAX
; i
++)
278 * mem -> SRC -> DVC -> SSI
280 mod
[0] = NULL
; /* for "mem" */
282 for (i
= 1; i
< MOD_MAX
; i
++) {
289 if ((!is_play
) && (this == src
))
292 mod
[i
] = (is_play
) ? src
: dvc
;
294 mod
[i
] = (is_play
) ? dvc
: src
;
307 *mod_from
= mod
[index
- 1];
308 *mod_to
= mod
[index
];
310 *mod_from
= mod
[index
];
311 *mod_to
= mod
[index
- 1];
315 int rsnd_dma_init(struct rsnd_priv
*priv
, struct rsnd_dma
*dma
,
318 struct device
*dev
= rsnd_priv_to_dev(priv
);
319 struct dma_slave_config cfg
;
320 struct rsnd_mod
*mod_from
;
321 struct rsnd_mod
*mod_to
;
322 char dma_name
[DMA_NAME_SIZE
];
327 dev_err(dev
, "it already has dma channel\n");
332 dma_cap_set(DMA_SLAVE
, mask
);
334 rsnd_dma_of_path(dma
, is_play
, &mod_from
, &mod_to
);
335 rsnd_dma_of_name(mod_from
, mod_to
, dma_name
);
338 cfg
.direction
= is_play
? DMA_MEM_TO_DEV
: DMA_DEV_TO_MEM
;
339 cfg
.src_addr
= rsnd_gen_dma_addr(priv
, mod_from
, is_play
, 1);
340 cfg
.dst_addr
= rsnd_gen_dma_addr(priv
, mod_to
, is_play
, 0);
341 cfg
.src_addr_width
= DMA_SLAVE_BUSWIDTH_4_BYTES
;
342 cfg
.dst_addr_width
= DMA_SLAVE_BUSWIDTH_4_BYTES
;
344 dev_dbg(dev
, "dma : %s %pad -> %pad\n",
345 dma_name
, &cfg
.src_addr
, &cfg
.dst_addr
);
347 dma
->chan
= dma_request_slave_channel_compat(mask
, shdma_chan_filter
,
351 dev_err(dev
, "can't get dma channel\n");
352 goto rsnd_dma_channel_err
;
355 ret
= dmaengine_slave_config(dma
->chan
, &cfg
);
357 goto rsnd_dma_init_err
;
359 dma
->addr
= is_play
? cfg
.src_addr
: cfg
.dst_addr
;
360 dma
->dir
= is_play
? DMA_MEM_TO_DEV
: DMA_DEV_TO_MEM
;
365 rsnd_dma_quit(priv
, dma
);
366 rsnd_dma_channel_err
:
369 * DMA failed. try to PIO mode
371 * rsnd_ssi_fallback()
372 * rsnd_rdai_continuance_probe()
377 void rsnd_dma_quit(struct rsnd_priv
*priv
,
378 struct rsnd_dma
*dma
)
381 dma_release_channel(dma
->chan
);
389 u32
rsnd_get_adinr(struct rsnd_mod
*mod
)
391 struct rsnd_priv
*priv
= rsnd_mod_to_priv(mod
);
392 struct rsnd_dai_stream
*io
= rsnd_mod_to_io(mod
);
393 struct snd_pcm_runtime
*runtime
= rsnd_io_to_runtime(io
);
394 struct device
*dev
= rsnd_priv_to_dev(priv
);
395 u32 adinr
= runtime
->channels
;
397 switch (runtime
->sample_bits
) {
405 dev_warn(dev
, "not supported sample bits\n");
415 #define __rsnd_mod_call(mod, func, param...) \
417 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \
418 struct device *dev = rsnd_priv_to_dev(priv); \
419 u32 mask = 1 << __rsnd_mod_shift_##func; \
420 u32 call = __rsnd_mod_call_##func << __rsnd_mod_shift_##func; \
422 if ((mod->status & mask) == call) { \
423 dev_dbg(dev, "%s[%d] %s\n", \
424 rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \
425 ret = (mod)->ops->func(mod, param); \
426 mod->status = (mod->status & ~mask) | (~call & mask); \
431 #define rsnd_mod_call(mod, func, param...) \
432 (!(mod) ? -ENODEV : \
433 !((mod)->ops->func) ? 0 : \
434 __rsnd_mod_call(mod, func, param))
436 #define rsnd_dai_call(fn, io, param...) \
438 struct rsnd_mod *mod; \
440 for (i = 0; i < RSND_MOD_MAX; i++) { \
441 mod = (io)->mod[i]; \
444 ret = rsnd_mod_call(mod, fn, param); \
451 static int rsnd_dai_connect(struct rsnd_mod
*mod
,
452 struct rsnd_dai_stream
*io
)
457 if (io
->mod
[mod
->type
]) {
458 struct rsnd_priv
*priv
= rsnd_mod_to_priv(mod
);
459 struct device
*dev
= rsnd_priv_to_dev(priv
);
461 dev_err(dev
, "%s%d is not empty\n",
467 io
->mod
[mod
->type
] = mod
;
473 static void rsnd_dai_disconnect(struct rsnd_mod
*mod
,
474 struct rsnd_dai_stream
*io
)
477 io
->mod
[mod
->type
] = NULL
;
480 struct rsnd_dai
*rsnd_rdai_get(struct rsnd_priv
*priv
, int id
)
482 if ((id
< 0) || (id
>= rsnd_rdai_nr(priv
)))
485 return priv
->rdai
+ id
;
488 static struct rsnd_dai
*rsnd_dai_to_rdai(struct snd_soc_dai
*dai
)
490 struct rsnd_priv
*priv
= snd_soc_dai_get_drvdata(dai
);
492 return rsnd_rdai_get(priv
, dai
->id
);
496 * rsnd_soc_dai functions
498 int rsnd_dai_pointer_offset(struct rsnd_dai_stream
*io
, int additional
)
500 struct snd_pcm_substream
*substream
= io
->substream
;
501 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
502 int pos
= io
->byte_pos
+ additional
;
504 pos
%= (runtime
->periods
* io
->byte_per_period
);
509 void rsnd_dai_pointer_update(struct rsnd_dai_stream
*io
, int byte
)
511 io
->byte_pos
+= byte
;
513 if (io
->byte_pos
>= io
->next_period_byte
) {
514 struct snd_pcm_substream
*substream
= io
->substream
;
515 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
518 io
->next_period_byte
+= io
->byte_per_period
;
520 if (io
->period_pos
>= runtime
->periods
) {
523 io
->next_period_byte
= io
->byte_per_period
;
526 snd_pcm_period_elapsed(substream
);
530 static int rsnd_dai_stream_init(struct rsnd_dai_stream
*io
,
531 struct snd_pcm_substream
*substream
)
533 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
535 io
->substream
= substream
;
538 io
->byte_per_period
= runtime
->period_size
*
540 samples_to_bytes(runtime
, 1);
541 io
->next_period_byte
= io
->byte_per_period
;
547 struct snd_soc_dai
*rsnd_substream_to_dai(struct snd_pcm_substream
*substream
)
549 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
555 struct rsnd_dai_stream
*rsnd_rdai_to_io(struct rsnd_dai
*rdai
,
556 struct snd_pcm_substream
*substream
)
558 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
559 return &rdai
->playback
;
561 return &rdai
->capture
;
564 static int rsnd_soc_dai_trigger(struct snd_pcm_substream
*substream
, int cmd
,
565 struct snd_soc_dai
*dai
)
567 struct rsnd_priv
*priv
= snd_soc_dai_get_drvdata(dai
);
568 struct rsnd_dai
*rdai
= rsnd_dai_to_rdai(dai
);
569 struct rsnd_dai_stream
*io
= rsnd_rdai_to_io(rdai
, substream
);
570 int ssi_id
= rsnd_mod_id(rsnd_io_to_mod_ssi(io
));
574 rsnd_lock(priv
, flags
);
577 case SNDRV_PCM_TRIGGER_START
:
578 ret
= rsnd_dai_stream_init(io
, substream
);
580 goto dai_trigger_end
;
582 ret
= rsnd_platform_call(priv
, dai
, start
, ssi_id
);
584 goto dai_trigger_end
;
586 ret
= rsnd_dai_call(init
, io
, priv
);
588 goto dai_trigger_end
;
590 ret
= rsnd_dai_call(start
, io
, priv
);
592 goto dai_trigger_end
;
594 case SNDRV_PCM_TRIGGER_STOP
:
595 ret
= rsnd_dai_call(stop
, io
, priv
);
597 goto dai_trigger_end
;
599 ret
= rsnd_dai_call(quit
, io
, priv
);
601 goto dai_trigger_end
;
603 ret
= rsnd_platform_call(priv
, dai
, stop
, ssi_id
);
605 goto dai_trigger_end
;
612 rsnd_unlock(priv
, flags
);
617 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
619 struct rsnd_dai
*rdai
= rsnd_dai_to_rdai(dai
);
621 /* set master/slave audio interface */
622 switch (fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
623 case SND_SOC_DAIFMT_CBM_CFM
:
624 rdai
->clk_master
= 0;
626 case SND_SOC_DAIFMT_CBS_CFS
:
627 rdai
->clk_master
= 1; /* codec is slave, cpu is master */
634 switch (fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
635 case SND_SOC_DAIFMT_I2S
:
637 rdai
->data_alignment
= 0;
638 rdai
->frm_clk_inv
= 0;
640 case SND_SOC_DAIFMT_LEFT_J
:
642 rdai
->data_alignment
= 0;
643 rdai
->frm_clk_inv
= 1;
645 case SND_SOC_DAIFMT_RIGHT_J
:
647 rdai
->data_alignment
= 1;
648 rdai
->frm_clk_inv
= 1;
652 /* set clock inversion */
653 switch (fmt
& SND_SOC_DAIFMT_INV_MASK
) {
654 case SND_SOC_DAIFMT_NB_IF
:
655 rdai
->bit_clk_inv
= rdai
->bit_clk_inv
;
656 rdai
->frm_clk_inv
= !rdai
->frm_clk_inv
;
658 case SND_SOC_DAIFMT_IB_NF
:
659 rdai
->bit_clk_inv
= !rdai
->bit_clk_inv
;
660 rdai
->frm_clk_inv
= rdai
->frm_clk_inv
;
662 case SND_SOC_DAIFMT_IB_IF
:
663 rdai
->bit_clk_inv
= !rdai
->bit_clk_inv
;
664 rdai
->frm_clk_inv
= !rdai
->frm_clk_inv
;
666 case SND_SOC_DAIFMT_NB_NF
:
674 static const struct snd_soc_dai_ops rsnd_soc_dai_ops
= {
675 .trigger
= rsnd_soc_dai_trigger
,
676 .set_fmt
= rsnd_soc_dai_set_fmt
,
679 #define rsnd_path_parse(priv, io, type) \
681 struct rsnd_mod *mod; \
685 if (rsnd_is_enable_path(io, type)) { \
686 id = rsnd_info_id(priv, io, type); \
688 mod = rsnd_##type##_mod_get(priv, id); \
689 ret = rsnd_dai_connect(mod, io); \
695 #define rsnd_path_break(priv, io, type) \
697 struct rsnd_mod *mod; \
700 if (rsnd_is_enable_path(io, type)) { \
701 id = rsnd_info_id(priv, io, type); \
703 mod = rsnd_##type##_mod_get(priv, id); \
704 rsnd_dai_disconnect(mod, io); \
709 static int rsnd_path_init(struct rsnd_priv
*priv
,
710 struct rsnd_dai
*rdai
,
711 struct rsnd_dai_stream
*io
)
716 * Gen1 is created by SRU/SSI, and this SRU is base module of
717 * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU)
720 * Gen1 SRU = Gen2 SCU + SSIU + etc
722 * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
727 ret
= rsnd_path_parse(priv
, io
, src
);
732 ret
= rsnd_path_parse(priv
, io
, ssi
);
737 ret
= rsnd_path_parse(priv
, io
, dvc
);
744 static void rsnd_of_parse_dai(struct platform_device
*pdev
,
745 const struct rsnd_of_data
*of_data
,
746 struct rsnd_priv
*priv
)
748 struct device_node
*dai_node
, *dai_np
;
749 struct device_node
*ssi_node
, *ssi_np
;
750 struct device_node
*src_node
, *src_np
;
751 struct device_node
*dvc_node
, *dvc_np
;
752 struct device_node
*playback
, *capture
;
753 struct rsnd_dai_platform_info
*dai_info
;
754 struct rcar_snd_info
*info
= rsnd_priv_to_info(priv
);
755 struct device
*dev
= &pdev
->dev
;
757 int dai_i
, ssi_i
, src_i
, dvc_i
;
762 dai_node
= of_get_child_by_name(dev
->of_node
, "rcar_sound,dai");
766 nr
= of_get_child_count(dai_node
);
770 dai_info
= devm_kzalloc(dev
,
771 sizeof(struct rsnd_dai_platform_info
) * nr
,
774 dev_err(dev
, "dai info allocation error\n");
778 info
->dai_info_nr
= nr
;
779 info
->dai_info
= dai_info
;
781 ssi_node
= of_get_child_by_name(dev
->of_node
, "rcar_sound,ssi");
782 src_node
= of_get_child_by_name(dev
->of_node
, "rcar_sound,src");
783 dvc_node
= of_get_child_by_name(dev
->of_node
, "rcar_sound,dvc");
785 #define mod_parse(name) \
787 struct rsnd_##name##_platform_info *name##_info; \
790 for_each_child_of_node(name##_node, name##_np) { \
791 name##_info = info->name##_info + name##_i; \
793 if (name##_np == playback) \
794 dai_info->playback.name = name##_info; \
795 if (name##_np == capture) \
796 dai_info->capture.name = name##_info; \
806 for_each_child_of_node(dai_node
, dai_np
) {
807 dai_info
= info
->dai_info
+ dai_i
;
811 playback
= of_parse_phandle(dai_np
, "playback", i
);
812 capture
= of_parse_phandle(dai_np
, "capture", i
);
814 if (!playback
&& !capture
)
821 of_node_put(playback
);
822 of_node_put(capture
);
829 static int rsnd_dai_probe(struct platform_device
*pdev
,
830 const struct rsnd_of_data
*of_data
,
831 struct rsnd_priv
*priv
)
833 struct snd_soc_dai_driver
*drv
;
834 struct rcar_snd_info
*info
= rsnd_priv_to_info(priv
);
835 struct rsnd_dai
*rdai
;
836 struct rsnd_ssi_platform_info
*pmod
, *cmod
;
837 struct device
*dev
= rsnd_priv_to_dev(priv
);
841 rsnd_of_parse_dai(pdev
, of_data
, priv
);
843 dai_nr
= info
->dai_info_nr
;
845 dev_err(dev
, "no dai\n");
849 drv
= devm_kzalloc(dev
, sizeof(*drv
) * dai_nr
, GFP_KERNEL
);
850 rdai
= devm_kzalloc(dev
, sizeof(*rdai
) * dai_nr
, GFP_KERNEL
);
852 dev_err(dev
, "dai allocate failed\n");
856 priv
->rdai_nr
= dai_nr
;
860 for (i
= 0; i
< dai_nr
; i
++) {
862 pmod
= info
->dai_info
[i
].playback
.ssi
;
863 cmod
= info
->dai_info
[i
].capture
.ssi
;
868 snprintf(rdai
[i
].name
, RSND_DAI_NAME_SIZE
, "rsnd-dai.%d", i
);
872 * init snd_soc_dai_driver
874 drv
[i
].name
= rdai
[i
].name
;
875 drv
[i
].ops
= &rsnd_soc_dai_ops
;
877 drv
[i
].playback
.rates
= RSND_RATES
;
878 drv
[i
].playback
.formats
= RSND_FMTS
;
879 drv
[i
].playback
.channels_min
= 2;
880 drv
[i
].playback
.channels_max
= 2;
882 rdai
[i
].playback
.info
= &info
->dai_info
[i
].playback
;
883 rdai
[i
].playback
.rdai
= rdai
+ i
;
884 rsnd_path_init(priv
, &rdai
[i
], &rdai
[i
].playback
);
887 drv
[i
].capture
.rates
= RSND_RATES
;
888 drv
[i
].capture
.formats
= RSND_FMTS
;
889 drv
[i
].capture
.channels_min
= 2;
890 drv
[i
].capture
.channels_max
= 2;
892 rdai
[i
].capture
.info
= &info
->dai_info
[i
].capture
;
893 rdai
[i
].capture
.rdai
= rdai
+ i
;
894 rsnd_path_init(priv
, &rdai
[i
], &rdai
[i
].capture
);
897 dev_dbg(dev
, "%s (%s/%s)\n", rdai
[i
].name
,
898 pmod
? "play" : " -- ",
899 cmod
? "capture" : " -- ");
908 static struct snd_pcm_hardware rsnd_pcm_hardware
= {
909 .info
= SNDRV_PCM_INFO_INTERLEAVED
|
910 SNDRV_PCM_INFO_MMAP
|
911 SNDRV_PCM_INFO_MMAP_VALID
,
912 .buffer_bytes_max
= 64 * 1024,
913 .period_bytes_min
= 32,
914 .period_bytes_max
= 8192,
920 static int rsnd_pcm_open(struct snd_pcm_substream
*substream
)
922 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
925 snd_soc_set_runtime_hwparams(substream
, &rsnd_pcm_hardware
);
927 ret
= snd_pcm_hw_constraint_integer(runtime
,
928 SNDRV_PCM_HW_PARAM_PERIODS
);
933 static int rsnd_hw_params(struct snd_pcm_substream
*substream
,
934 struct snd_pcm_hw_params
*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
];
1026 static int __rsnd_kctrl_new(struct rsnd_mod
*mod
,
1027 struct snd_soc_pcm_runtime
*rtd
,
1028 const unsigned char *name
,
1029 struct rsnd_kctrl_cfg
*cfg
,
1030 void (*update
)(struct rsnd_mod
*mod
))
1032 struct snd_card
*card
= rtd
->card
->snd_card
;
1033 struct snd_kcontrol
*kctrl
;
1034 struct snd_kcontrol_new knew
= {
1035 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
1037 .info
= rsnd_kctrl_info
,
1038 .get
= rsnd_kctrl_get
,
1039 .put
= rsnd_kctrl_put
,
1040 .private_value
= (unsigned long)cfg
,
1044 kctrl
= snd_ctl_new1(&knew
, mod
);
1048 ret
= snd_ctl_add(card
, kctrl
);
1050 snd_ctl_free_one(kctrl
);
1054 cfg
->update
= update
;
1061 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg
*cfg
)
1063 snd_ctl_remove(cfg
->card
, cfg
->kctrl
);
1066 int rsnd_kctrl_new_m(struct rsnd_mod
*mod
,
1067 struct snd_soc_pcm_runtime
*rtd
,
1068 const unsigned char *name
,
1069 void (*update
)(struct rsnd_mod
*mod
),
1070 struct rsnd_kctrl_cfg_m
*_cfg
,
1073 _cfg
->cfg
.max
= max
;
1074 _cfg
->cfg
.size
= RSND_DVC_CHANNELS
;
1075 _cfg
->cfg
.val
= _cfg
->val
;
1076 return __rsnd_kctrl_new(mod
, rtd
, name
, &_cfg
->cfg
, update
);
1079 int rsnd_kctrl_new_s(struct rsnd_mod
*mod
,
1080 struct snd_soc_pcm_runtime
*rtd
,
1081 const unsigned char *name
,
1082 void (*update
)(struct rsnd_mod
*mod
),
1083 struct rsnd_kctrl_cfg_s
*_cfg
,
1086 _cfg
->cfg
.max
= max
;
1088 _cfg
->cfg
.val
= &_cfg
->val
;
1089 return __rsnd_kctrl_new(mod
, rtd
, name
, &_cfg
->cfg
, update
);
1092 int rsnd_kctrl_new_e(struct rsnd_mod
*mod
,
1093 struct snd_soc_pcm_runtime
*rtd
,
1094 const unsigned char *name
,
1095 struct rsnd_kctrl_cfg_s
*_cfg
,
1096 void (*update
)(struct rsnd_mod
*mod
),
1097 const char * const *texts
,
1100 _cfg
->cfg
.max
= max
;
1102 _cfg
->cfg
.val
= &_cfg
->val
;
1103 _cfg
->cfg
.texts
= texts
;
1104 return __rsnd_kctrl_new(mod
, rtd
, name
, &_cfg
->cfg
, update
);
1111 #define PREALLOC_BUFFER (32 * 1024)
1112 #define PREALLOC_BUFFER_MAX (32 * 1024)
1114 static int rsnd_pcm_new(struct snd_soc_pcm_runtime
*rtd
)
1116 struct snd_soc_dai
*dai
= rtd
->cpu_dai
;
1117 struct rsnd_dai
*rdai
= rsnd_dai_to_rdai(dai
);
1120 ret
= rsnd_dai_call(pcm_new
, &rdai
->playback
, rtd
);
1124 ret
= rsnd_dai_call(pcm_new
, &rdai
->capture
, rtd
);
1128 return snd_pcm_lib_preallocate_pages_for_all(
1131 rtd
->card
->snd_card
->dev
,
1132 PREALLOC_BUFFER
, PREALLOC_BUFFER_MAX
);
1135 static struct snd_soc_platform_driver rsnd_soc_platform
= {
1136 .ops
= &rsnd_pcm_ops
,
1137 .pcm_new
= rsnd_pcm_new
,
1140 static const struct snd_soc_component_driver rsnd_soc_component
= {
1144 static int rsnd_rdai_continuance_probe(struct rsnd_priv
*priv
,
1145 struct rsnd_dai_stream
*io
)
1149 ret
= rsnd_dai_call(probe
, io
, priv
);
1150 if (ret
== -EAGAIN
) {
1152 * Fallback to PIO mode
1156 * call "remove" for SSI/SRC/DVC
1157 * SSI will be switch to PIO mode if it was DMA mode
1160 * rsnd_ssi_fallback()
1162 rsnd_dai_call(remove
, io
, priv
);
1165 * remove SRC/DVC from DAI,
1167 rsnd_path_break(priv
, io
, src
);
1168 rsnd_path_break(priv
, io
, dvc
);
1173 rsnd_dai_call(fallback
, io
, priv
);
1177 * DAI has SSI which is PIO mode only now.
1179 ret
= rsnd_dai_call(probe
, io
, priv
);
1188 static int rsnd_probe(struct platform_device
*pdev
)
1190 struct rcar_snd_info
*info
;
1191 struct rsnd_priv
*priv
;
1192 struct device
*dev
= &pdev
->dev
;
1193 struct rsnd_dai
*rdai
;
1194 const struct of_device_id
*of_id
= of_match_device(rsnd_of_match
, dev
);
1195 const struct rsnd_of_data
*of_data
;
1196 int (*probe_func
[])(struct platform_device
*pdev
,
1197 const struct rsnd_of_data
*of_data
,
1198 struct rsnd_priv
*priv
) = {
1211 info
= devm_kzalloc(&pdev
->dev
,
1212 sizeof(struct rcar_snd_info
), GFP_KERNEL
);
1213 of_data
= of_id
->data
;
1215 info
= pdev
->dev
.platform_data
;
1219 dev_err(dev
, "driver needs R-Car sound information\n");
1226 priv
= devm_kzalloc(dev
, sizeof(*priv
), GFP_KERNEL
);
1228 dev_err(dev
, "priv allocate failed\n");
1234 spin_lock_init(&priv
->lock
);
1239 for (i
= 0; i
< ARRAY_SIZE(probe_func
); i
++) {
1240 ret
= probe_func
[i
](pdev
, of_data
, priv
);
1245 for_each_rsnd_dai(rdai
, priv
, i
) {
1246 ret
= rsnd_rdai_continuance_probe(priv
, &rdai
->playback
);
1248 goto exit_snd_probe
;
1250 ret
= rsnd_rdai_continuance_probe(priv
, &rdai
->capture
);
1252 goto exit_snd_probe
;
1255 dev_set_drvdata(dev
, priv
);
1260 ret
= snd_soc_register_platform(dev
, &rsnd_soc_platform
);
1262 dev_err(dev
, "cannot snd soc register\n");
1266 ret
= snd_soc_register_component(dev
, &rsnd_soc_component
,
1267 priv
->daidrv
, rsnd_rdai_nr(priv
));
1269 dev_err(dev
, "cannot snd dai register\n");
1273 pm_runtime_enable(dev
);
1275 dev_info(dev
, "probed\n");
1279 snd_soc_unregister_platform(dev
);
1281 for_each_rsnd_dai(rdai
, priv
, i
) {
1282 rsnd_dai_call(remove
, &rdai
->playback
, priv
);
1283 rsnd_dai_call(remove
, &rdai
->capture
, priv
);
1289 static int rsnd_remove(struct platform_device
*pdev
)
1291 struct rsnd_priv
*priv
= dev_get_drvdata(&pdev
->dev
);
1292 struct rsnd_dai
*rdai
;
1295 pm_runtime_disable(&pdev
->dev
);
1297 for_each_rsnd_dai(rdai
, priv
, i
) {
1298 ret
|= rsnd_dai_call(remove
, &rdai
->playback
, priv
);
1299 ret
|= rsnd_dai_call(remove
, &rdai
->capture
, priv
);
1302 snd_soc_unregister_component(&pdev
->dev
);
1303 snd_soc_unregister_platform(&pdev
->dev
);
1308 static struct platform_driver rsnd_driver
= {
1310 .name
= "rcar_sound",
1311 .of_match_table
= rsnd_of_match
,
1313 .probe
= rsnd_probe
,
1314 .remove
= rsnd_remove
,
1316 module_platform_driver(rsnd_driver
);
1318 MODULE_LICENSE("GPL");
1319 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1320 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1321 MODULE_ALIAS("platform:rcar-pcm-audio");