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 scu
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)
104 * rsnd_platform functions
106 #define rsnd_platform_call(priv, dai, func, param...) \
107 (!(priv->info->func) ? 0 : \
108 priv->info->func(param))
113 char *rsnd_mod_name(struct rsnd_mod
*mod
)
115 if (!mod
|| !mod
->ops
)
118 return mod
->ops
->name
;
121 void rsnd_mod_init(struct rsnd_priv
*priv
,
122 struct rsnd_mod
*mod
,
123 struct rsnd_mod_ops
*ops
,
129 INIT_LIST_HEAD(&mod
->list
);
135 static void rsnd_dma_continue(struct rsnd_dma
*dma
)
137 /* push next A or B plane */
138 dma
->submit_loop
= 1;
139 schedule_work(&dma
->work
);
142 void rsnd_dma_start(struct rsnd_dma
*dma
)
144 /* push both A and B plane*/
145 dma
->submit_loop
= 2;
146 schedule_work(&dma
->work
);
149 void rsnd_dma_stop(struct rsnd_dma
*dma
)
151 dma
->submit_loop
= 0;
152 cancel_work_sync(&dma
->work
);
153 dmaengine_terminate_all(dma
->chan
);
156 static void rsnd_dma_complete(void *data
)
158 struct rsnd_dma
*dma
= (struct rsnd_dma
*)data
;
159 struct rsnd_priv
*priv
= dma
->priv
;
162 rsnd_lock(priv
, flags
);
166 if (dma
->submit_loop
)
167 rsnd_dma_continue(dma
);
169 rsnd_unlock(priv
, flags
);
172 static void rsnd_dma_do_work(struct work_struct
*work
)
174 struct rsnd_dma
*dma
= container_of(work
, struct rsnd_dma
, work
);
175 struct rsnd_priv
*priv
= dma
->priv
;
176 struct device
*dev
= rsnd_priv_to_dev(priv
);
177 struct dma_async_tx_descriptor
*desc
;
182 for (i
= 0; i
< dma
->submit_loop
; i
++) {
184 if (dma
->inquiry(dma
, &buf
, &len
) < 0)
187 desc
= dmaengine_prep_slave_single(
188 dma
->chan
, buf
, len
, dma
->dir
,
189 DMA_PREP_INTERRUPT
| DMA_CTRL_ACK
);
191 dev_err(dev
, "dmaengine_prep_slave_sg() fail\n");
195 desc
->callback
= rsnd_dma_complete
;
196 desc
->callback_param
= dma
;
198 if (dmaengine_submit(desc
) < 0) {
199 dev_err(dev
, "dmaengine_submit() fail\n");
203 dma_async_issue_pending(dma
->chan
);
207 int rsnd_dma_available(struct rsnd_dma
*dma
)
212 int rsnd_dma_init(struct rsnd_priv
*priv
, struct rsnd_dma
*dma
,
214 int (*inquiry
)(struct rsnd_dma
*dma
,
215 dma_addr_t
*buf
, int *len
),
216 int (*complete
)(struct rsnd_dma
*dma
))
218 struct device
*dev
= rsnd_priv_to_dev(priv
);
219 struct dma_slave_config cfg
;
224 dev_err(dev
, "it already has dma channel\n");
229 dma_cap_set(DMA_SLAVE
, mask
);
231 dma
->chan
= dma_request_slave_channel_compat(mask
, shdma_chan_filter
,
233 is_play
? "tx" : "rx");
235 dev_err(dev
, "can't get dma channel\n");
240 cfg
.dst_addr
= 0; /* use default addr when playback */
241 cfg
.src_addr
= 0; /* use default addr when capture */
242 cfg
.direction
= is_play
? DMA_MEM_TO_DEV
: DMA_DEV_TO_MEM
;
244 ret
= dmaengine_slave_config(dma
->chan
, &cfg
);
246 goto rsnd_dma_init_err
;
248 dma
->dir
= is_play
? DMA_TO_DEVICE
: DMA_FROM_DEVICE
;
250 dma
->inquiry
= inquiry
;
251 dma
->complete
= complete
;
252 INIT_WORK(&dma
->work
, rsnd_dma_do_work
);
257 rsnd_dma_quit(priv
, dma
);
262 void rsnd_dma_quit(struct rsnd_priv
*priv
,
263 struct rsnd_dma
*dma
)
266 dma_release_channel(dma
->chan
);
274 #define rsnd_dai_call(rdai, io, fn) \
276 struct rsnd_mod *mod, *n; \
278 for_each_rsnd_mod(mod, n, io) { \
279 ret = rsnd_mod_call(mod, fn, rdai, io); \
286 int rsnd_dai_connect(struct rsnd_dai
*rdai
,
287 struct rsnd_mod
*mod
,
288 struct rsnd_dai_stream
*io
)
293 if (!list_empty(&mod
->list
)) {
294 struct rsnd_priv
*priv
= rsnd_mod_to_priv(mod
);
295 struct device
*dev
= rsnd_priv_to_dev(priv
);
297 dev_err(dev
, "%s%d is not empty\n",
303 list_add_tail(&mod
->list
, &io
->head
);
308 int rsnd_dai_disconnect(struct rsnd_mod
*mod
)
310 list_del_init(&mod
->list
);
315 int rsnd_dai_id(struct rsnd_priv
*priv
, struct rsnd_dai
*rdai
)
317 int id
= rdai
- priv
->rdai
;
319 if ((id
< 0) || (id
>= rsnd_dai_nr(priv
)))
325 struct rsnd_dai
*rsnd_dai_get(struct rsnd_priv
*priv
, int id
)
327 if ((id
< 0) || (id
>= rsnd_dai_nr(priv
)))
330 return priv
->rdai
+ id
;
333 static struct rsnd_dai
*rsnd_dai_to_rdai(struct snd_soc_dai
*dai
)
335 struct rsnd_priv
*priv
= snd_soc_dai_get_drvdata(dai
);
337 return rsnd_dai_get(priv
, dai
->id
);
340 int rsnd_dai_is_play(struct rsnd_dai
*rdai
, struct rsnd_dai_stream
*io
)
342 return &rdai
->playback
== io
;
346 * rsnd_soc_dai functions
348 int rsnd_dai_pointer_offset(struct rsnd_dai_stream
*io
, int additional
)
350 struct snd_pcm_substream
*substream
= io
->substream
;
351 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
352 int pos
= io
->byte_pos
+ additional
;
354 pos
%= (runtime
->periods
* io
->byte_per_period
);
359 void rsnd_dai_pointer_update(struct rsnd_dai_stream
*io
, int byte
)
361 io
->byte_pos
+= byte
;
363 if (io
->byte_pos
>= io
->next_period_byte
) {
364 struct snd_pcm_substream
*substream
= io
->substream
;
365 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
368 io
->next_period_byte
+= io
->byte_per_period
;
370 if (io
->period_pos
>= runtime
->periods
) {
373 io
->next_period_byte
= io
->byte_per_period
;
376 snd_pcm_period_elapsed(substream
);
380 static int rsnd_dai_stream_init(struct rsnd_dai_stream
*io
,
381 struct snd_pcm_substream
*substream
)
383 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
385 if (!list_empty(&io
->head
))
388 INIT_LIST_HEAD(&io
->head
);
389 io
->substream
= substream
;
392 io
->byte_per_period
= runtime
->period_size
*
394 samples_to_bytes(runtime
, 1);
395 io
->next_period_byte
= io
->byte_per_period
;
401 struct snd_soc_dai
*rsnd_substream_to_dai(struct snd_pcm_substream
*substream
)
403 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
409 struct rsnd_dai_stream
*rsnd_rdai_to_io(struct rsnd_dai
*rdai
,
410 struct snd_pcm_substream
*substream
)
412 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
413 return &rdai
->playback
;
415 return &rdai
->capture
;
418 static int rsnd_soc_dai_trigger(struct snd_pcm_substream
*substream
, int cmd
,
419 struct snd_soc_dai
*dai
)
421 struct rsnd_priv
*priv
= snd_soc_dai_get_drvdata(dai
);
422 struct rsnd_dai
*rdai
= rsnd_dai_to_rdai(dai
);
423 struct rsnd_dai_stream
*io
= rsnd_rdai_to_io(rdai
, substream
);
424 struct rsnd_mod
*mod
= rsnd_ssi_mod_get_frm_dai(priv
,
425 rsnd_dai_id(priv
, rdai
),
426 rsnd_dai_is_play(rdai
, io
));
427 int ssi_id
= rsnd_mod_id(mod
);
431 rsnd_lock(priv
, flags
);
434 case SNDRV_PCM_TRIGGER_START
:
435 ret
= rsnd_dai_stream_init(io
, substream
);
437 goto dai_trigger_end
;
439 ret
= rsnd_platform_call(priv
, dai
, start
, ssi_id
);
441 goto dai_trigger_end
;
443 ret
= rsnd_gen_path_init(priv
, rdai
, io
);
445 goto dai_trigger_end
;
447 ret
= rsnd_dai_call(rdai
, io
, init
);
449 goto dai_trigger_end
;
451 ret
= rsnd_dai_call(rdai
, io
, start
);
453 goto dai_trigger_end
;
455 case SNDRV_PCM_TRIGGER_STOP
:
456 ret
= rsnd_dai_call(rdai
, io
, stop
);
458 goto dai_trigger_end
;
460 ret
= rsnd_dai_call(rdai
, io
, quit
);
462 goto dai_trigger_end
;
464 ret
= rsnd_gen_path_exit(priv
, rdai
, io
);
466 goto dai_trigger_end
;
468 ret
= rsnd_platform_call(priv
, dai
, stop
, ssi_id
);
470 goto dai_trigger_end
;
477 rsnd_unlock(priv
, flags
);
482 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
484 struct rsnd_dai
*rdai
= rsnd_dai_to_rdai(dai
);
486 /* set master/slave audio interface */
487 switch (fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
488 case SND_SOC_DAIFMT_CBM_CFM
:
489 rdai
->clk_master
= 1;
491 case SND_SOC_DAIFMT_CBS_CFS
:
492 rdai
->clk_master
= 0;
498 /* set clock inversion */
499 switch (fmt
& SND_SOC_DAIFMT_INV_MASK
) {
500 case SND_SOC_DAIFMT_NB_IF
:
501 rdai
->bit_clk_inv
= 0;
502 rdai
->frm_clk_inv
= 1;
504 case SND_SOC_DAIFMT_IB_NF
:
505 rdai
->bit_clk_inv
= 1;
506 rdai
->frm_clk_inv
= 0;
508 case SND_SOC_DAIFMT_IB_IF
:
509 rdai
->bit_clk_inv
= 1;
510 rdai
->frm_clk_inv
= 1;
512 case SND_SOC_DAIFMT_NB_NF
:
514 rdai
->bit_clk_inv
= 0;
515 rdai
->frm_clk_inv
= 0;
520 switch (fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
521 case SND_SOC_DAIFMT_I2S
:
523 rdai
->data_alignment
= 0;
525 case SND_SOC_DAIFMT_LEFT_J
:
527 rdai
->data_alignment
= 0;
529 case SND_SOC_DAIFMT_RIGHT_J
:
531 rdai
->data_alignment
= 1;
538 static const struct snd_soc_dai_ops rsnd_soc_dai_ops
= {
539 .trigger
= rsnd_soc_dai_trigger
,
540 .set_fmt
= rsnd_soc_dai_set_fmt
,
543 static int rsnd_dai_probe(struct platform_device
*pdev
,
544 struct rcar_snd_info
*info
,
545 struct rsnd_priv
*priv
)
547 struct snd_soc_dai_driver
*drv
;
548 struct rsnd_dai
*rdai
;
549 struct rsnd_mod
*pmod
, *cmod
;
550 struct device
*dev
= rsnd_priv_to_dev(priv
);
555 for (dai_nr
= 0; dai_nr
< 32; dai_nr
++) {
556 pmod
= rsnd_ssi_mod_get_frm_dai(priv
, dai_nr
, 1);
557 cmod
= rsnd_ssi_mod_get_frm_dai(priv
, dai_nr
, 0);
564 dev_err(dev
, "no dai\n");
568 drv
= devm_kzalloc(dev
, sizeof(*drv
) * dai_nr
, GFP_KERNEL
);
569 rdai
= devm_kzalloc(dev
, sizeof(*rdai
) * dai_nr
, GFP_KERNEL
);
571 dev_err(dev
, "dai allocate failed\n");
575 for (i
= 0; i
< dai_nr
; i
++) {
577 pmod
= rsnd_ssi_mod_get_frm_dai(priv
, i
, 1);
578 cmod
= rsnd_ssi_mod_get_frm_dai(priv
, i
, 0);
583 INIT_LIST_HEAD(&rdai
[i
].playback
.head
);
584 INIT_LIST_HEAD(&rdai
[i
].capture
.head
);
586 snprintf(rdai
[i
].name
, RSND_DAI_NAME_SIZE
, "rsnd-dai.%d", i
);
589 * init snd_soc_dai_driver
591 drv
[i
].name
= rdai
[i
].name
;
592 drv
[i
].ops
= &rsnd_soc_dai_ops
;
594 drv
[i
].playback
.rates
= RSND_RATES
;
595 drv
[i
].playback
.formats
= RSND_FMTS
;
596 drv
[i
].playback
.channels_min
= 2;
597 drv
[i
].playback
.channels_max
= 2;
600 drv
[i
].capture
.rates
= RSND_RATES
;
601 drv
[i
].capture
.formats
= RSND_FMTS
;
602 drv
[i
].capture
.channels_min
= 2;
603 drv
[i
].capture
.channels_max
= 2;
606 dev_dbg(dev
, "%s (%s/%s)\n", rdai
[i
].name
,
607 pmod
? "play" : " -- ",
608 cmod
? "capture" : " -- ");
611 priv
->dai_nr
= dai_nr
;
618 static void rsnd_dai_remove(struct platform_device
*pdev
,
619 struct rsnd_priv
*priv
)
626 static struct snd_pcm_hardware rsnd_pcm_hardware
= {
627 .info
= SNDRV_PCM_INFO_INTERLEAVED
|
628 SNDRV_PCM_INFO_MMAP
|
629 SNDRV_PCM_INFO_MMAP_VALID
|
630 SNDRV_PCM_INFO_PAUSE
,
631 .formats
= RSND_FMTS
,
637 .buffer_bytes_max
= 64 * 1024,
638 .period_bytes_min
= 32,
639 .period_bytes_max
= 8192,
645 static int rsnd_pcm_open(struct snd_pcm_substream
*substream
)
647 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
650 snd_soc_set_runtime_hwparams(substream
, &rsnd_pcm_hardware
);
652 ret
= snd_pcm_hw_constraint_integer(runtime
,
653 SNDRV_PCM_HW_PARAM_PERIODS
);
658 static int rsnd_hw_params(struct snd_pcm_substream
*substream
,
659 struct snd_pcm_hw_params
*hw_params
)
661 return snd_pcm_lib_malloc_pages(substream
,
662 params_buffer_bytes(hw_params
));
665 static snd_pcm_uframes_t
rsnd_pointer(struct snd_pcm_substream
*substream
)
667 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
668 struct snd_soc_dai
*dai
= rsnd_substream_to_dai(substream
);
669 struct rsnd_dai
*rdai
= rsnd_dai_to_rdai(dai
);
670 struct rsnd_dai_stream
*io
= rsnd_rdai_to_io(rdai
, substream
);
672 return bytes_to_frames(runtime
, io
->byte_pos
);
675 static struct snd_pcm_ops rsnd_pcm_ops
= {
676 .open
= rsnd_pcm_open
,
677 .ioctl
= snd_pcm_lib_ioctl
,
678 .hw_params
= rsnd_hw_params
,
679 .hw_free
= snd_pcm_lib_free_pages
,
680 .pointer
= rsnd_pointer
,
687 #define PREALLOC_BUFFER (32 * 1024)
688 #define PREALLOC_BUFFER_MAX (32 * 1024)
690 static int rsnd_pcm_new(struct snd_soc_pcm_runtime
*rtd
)
692 return snd_pcm_lib_preallocate_pages_for_all(
695 rtd
->card
->snd_card
->dev
,
696 PREALLOC_BUFFER
, PREALLOC_BUFFER_MAX
);
699 static void rsnd_pcm_free(struct snd_pcm
*pcm
)
701 snd_pcm_lib_preallocate_free_for_all(pcm
);
704 static struct snd_soc_platform_driver rsnd_soc_platform
= {
705 .ops
= &rsnd_pcm_ops
,
706 .pcm_new
= rsnd_pcm_new
,
707 .pcm_free
= rsnd_pcm_free
,
710 static const struct snd_soc_component_driver rsnd_soc_component
= {
717 static int rsnd_probe(struct platform_device
*pdev
)
719 struct rcar_snd_info
*info
;
720 struct rsnd_priv
*priv
;
721 struct device
*dev
= &pdev
->dev
;
724 info
= pdev
->dev
.platform_data
;
726 dev_err(dev
, "driver needs R-Car sound information\n");
733 priv
= devm_kzalloc(dev
, sizeof(*priv
), GFP_KERNEL
);
735 dev_err(dev
, "priv allocate failed\n");
741 spin_lock_init(&priv
->lock
);
746 ret
= rsnd_gen_probe(pdev
, info
, priv
);
750 ret
= rsnd_scu_probe(pdev
, info
, priv
);
754 ret
= rsnd_adg_probe(pdev
, info
, priv
);
758 ret
= rsnd_ssi_probe(pdev
, info
, priv
);
762 ret
= rsnd_dai_probe(pdev
, info
, priv
);
769 ret
= snd_soc_register_platform(dev
, &rsnd_soc_platform
);
771 dev_err(dev
, "cannot snd soc register\n");
775 ret
= snd_soc_register_component(dev
, &rsnd_soc_component
,
776 priv
->daidrv
, rsnd_dai_nr(priv
));
778 dev_err(dev
, "cannot snd dai register\n");
782 dev_set_drvdata(dev
, priv
);
784 pm_runtime_enable(dev
);
786 dev_info(dev
, "probed\n");
790 snd_soc_unregister_platform(dev
);
795 static int rsnd_remove(struct platform_device
*pdev
)
797 struct rsnd_priv
*priv
= dev_get_drvdata(&pdev
->dev
);
799 pm_runtime_disable(&pdev
->dev
);
804 rsnd_ssi_remove(pdev
, priv
);
805 rsnd_adg_remove(pdev
, priv
);
806 rsnd_scu_remove(pdev
, priv
);
807 rsnd_dai_remove(pdev
, priv
);
808 rsnd_gen_remove(pdev
, priv
);
813 static struct platform_driver rsnd_driver
= {
815 .name
= "rcar_sound",
818 .remove
= rsnd_remove
,
820 module_platform_driver(rsnd_driver
);
822 MODULE_LICENSE("GPL");
823 MODULE_DESCRIPTION("Renesas R-Car audio driver");
824 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
825 MODULE_ALIAS("platform:rcar-pcm-audio");