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 void rsnd_mod_init(struct rsnd_priv
*priv
,
142 struct rsnd_mod
*mod
,
143 struct rsnd_mod_ops
*ops
,
144 enum rsnd_mod_type type
,
156 static void __rsnd_dma_start(struct rsnd_dma
*dma
);
157 static void rsnd_dma_continue(struct rsnd_dma
*dma
)
159 /* push next A or B plane */
160 dma
->submit_loop
= 1;
161 schedule_work(&dma
->work
);
164 void rsnd_dma_start(struct rsnd_dma
*dma
)
166 /* push both A and B plane*/
168 dma
->submit_loop
= 2;
169 __rsnd_dma_start(dma
);
172 void rsnd_dma_stop(struct rsnd_dma
*dma
)
174 dma
->submit_loop
= 0;
175 cancel_work_sync(&dma
->work
);
176 dmaengine_terminate_all(dma
->chan
);
179 static void rsnd_dma_complete(void *data
)
181 struct rsnd_dma
*dma
= (struct rsnd_dma
*)data
;
182 struct rsnd_mod
*mod
= rsnd_dma_to_mod(dma
);
183 struct rsnd_priv
*priv
= rsnd_mod_to_priv(rsnd_dma_to_mod(dma
));
184 struct rsnd_dai_stream
*io
= rsnd_mod_to_io(mod
);
187 rsnd_lock(priv
, flags
);
190 * Renesas sound Gen1 needs 1 DMAC,
192 * In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri.
193 * But, Audio-DMAC-peri-peri doesn't have interrupt,
194 * and this driver is assuming that here.
196 * If Audio-DMAC-peri-peri has interrpt,
197 * rsnd_dai_pointer_update() will be called twice,
198 * ant it will breaks io->byte_pos
200 if (dma
->submit_loop
)
201 rsnd_dma_continue(dma
);
203 rsnd_unlock(priv
, flags
);
205 rsnd_dai_pointer_update(io
, io
->byte_per_period
);
208 static void __rsnd_dma_start(struct rsnd_dma
*dma
)
210 struct rsnd_mod
*mod
= rsnd_dma_to_mod(dma
);
211 struct rsnd_priv
*priv
= rsnd_mod_to_priv(mod
);
212 struct rsnd_dai_stream
*io
= rsnd_mod_to_io(mod
);
213 struct snd_pcm_runtime
*runtime
= rsnd_io_to_runtime(io
);
214 struct device
*dev
= rsnd_priv_to_dev(priv
);
215 struct dma_async_tx_descriptor
*desc
;
217 size_t len
= io
->byte_per_period
;
220 for (i
= 0; i
< dma
->submit_loop
; i
++) {
222 buf
= runtime
->dma_addr
+
223 rsnd_dai_pointer_offset(io
, dma
->offset
+ len
);
226 desc
= dmaengine_prep_slave_single(
227 dma
->chan
, buf
, len
, dma
->dir
,
228 DMA_PREP_INTERRUPT
| DMA_CTRL_ACK
);
230 dev_err(dev
, "dmaengine_prep_slave_sg() fail\n");
234 desc
->callback
= rsnd_dma_complete
;
235 desc
->callback_param
= dma
;
237 if (dmaengine_submit(desc
) < 0) {
238 dev_err(dev
, "dmaengine_submit() fail\n");
242 dma_async_issue_pending(dma
->chan
);
246 static void rsnd_dma_do_work(struct work_struct
*work
)
248 struct rsnd_dma
*dma
= container_of(work
, struct rsnd_dma
, work
);
250 __rsnd_dma_start(dma
);
253 int rsnd_dma_available(struct rsnd_dma
*dma
)
258 #define DMA_NAME_SIZE 16
259 #define MOD_MAX 4 /* MEM/SSI/SRC/DVC */
260 static int _rsnd_dma_of_name(char *dma_name
, struct rsnd_mod
*mod
)
263 return snprintf(dma_name
, DMA_NAME_SIZE
/ 2, "%s%d",
264 rsnd_mod_name(mod
), rsnd_mod_id(mod
));
266 return snprintf(dma_name
, DMA_NAME_SIZE
/ 2, "mem");
270 static void rsnd_dma_of_name(struct rsnd_dma
*dma
,
271 int is_play
, char *dma_name
)
273 struct rsnd_mod
*this = rsnd_dma_to_mod(dma
);
274 struct rsnd_dai_stream
*io
= rsnd_mod_to_io(this);
275 struct rsnd_mod
*ssi
= rsnd_io_to_mod_ssi(io
);
276 struct rsnd_mod
*src
= rsnd_io_to_mod_src(io
);
277 struct rsnd_mod
*dvc
= rsnd_io_to_mod_dvc(io
);
278 struct rsnd_mod
*mod
[MOD_MAX
];
279 struct rsnd_mod
*src_mod
, *dst_mod
;
283 for (i
= 0; i
< MOD_MAX
; i
++)
293 * mem -> SRC -> DVC -> SSI
295 mod
[0] = NULL
; /* for "mem" */
297 for (i
= 1; i
< MOD_MAX
; i
++) {
316 src_mod
= mod
[index
- 1];
317 dst_mod
= mod
[index
];
319 src_mod
= mod
[index
];
320 dst_mod
= mod
[index
- 1];
324 index
= _rsnd_dma_of_name(dma_name
+ index
, src_mod
);
325 *(dma_name
+ index
++) = '_';
326 index
= _rsnd_dma_of_name(dma_name
+ index
, dst_mod
);
329 int rsnd_dma_init(struct rsnd_priv
*priv
, struct rsnd_dma
*dma
,
332 struct device
*dev
= rsnd_priv_to_dev(priv
);
333 struct dma_slave_config cfg
;
334 char dma_name
[DMA_NAME_SIZE
];
339 dev_err(dev
, "it already has dma channel\n");
344 dma_cap_set(DMA_SLAVE
, mask
);
347 rsnd_dma_of_name(dma
, is_play
, dma_name
);
349 snprintf(dma_name
, DMA_NAME_SIZE
,
350 is_play
? "tx" : "rx");
352 dev_dbg(dev
, "dma name : %s\n", dma_name
);
354 dma
->chan
= dma_request_slave_channel_compat(mask
, shdma_chan_filter
,
358 dev_err(dev
, "can't get dma channel\n");
362 rsnd_gen_dma_addr(priv
, dma
, &cfg
, is_play
, id
);
364 ret
= dmaengine_slave_config(dma
->chan
, &cfg
);
366 goto rsnd_dma_init_err
;
368 dma
->dir
= is_play
? DMA_TO_DEVICE
: DMA_FROM_DEVICE
;
369 INIT_WORK(&dma
->work
, rsnd_dma_do_work
);
374 rsnd_dma_quit(priv
, dma
);
379 void rsnd_dma_quit(struct rsnd_priv
*priv
,
380 struct rsnd_dma
*dma
)
383 dma_release_channel(dma
->chan
);
391 u32
rsnd_get_adinr(struct rsnd_mod
*mod
)
393 struct rsnd_priv
*priv
= rsnd_mod_to_priv(mod
);
394 struct rsnd_dai_stream
*io
= rsnd_mod_to_io(mod
);
395 struct snd_pcm_runtime
*runtime
= rsnd_io_to_runtime(io
);
396 struct device
*dev
= rsnd_priv_to_dev(priv
);
397 u32 adinr
= runtime
->channels
;
399 switch (runtime
->sample_bits
) {
407 dev_warn(dev
, "not supported sample bits\n");
417 #define __rsnd_mod_call(mod, func, rdai...) \
419 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \
420 struct device *dev = rsnd_priv_to_dev(priv); \
421 dev_dbg(dev, "%s [%d] %s\n", \
422 rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \
423 (mod)->ops->func(mod, rdai); \
426 #define rsnd_mod_call(mod, func, rdai...) \
427 (!(mod) ? -ENODEV : \
428 !((mod)->ops->func) ? 0 : \
429 __rsnd_mod_call(mod, func, rdai))
431 #define rsnd_dai_call(fn, io, rdai...) \
433 struct rsnd_mod *mod; \
435 for (i = 0; i < RSND_MOD_MAX; i++) { \
436 mod = (io)->mod[i]; \
439 ret = rsnd_mod_call(mod, fn, rdai); \
446 static int rsnd_dai_connect(struct rsnd_mod
*mod
,
447 struct rsnd_dai_stream
*io
)
452 if (io
->mod
[mod
->type
]) {
453 struct rsnd_priv
*priv
= rsnd_mod_to_priv(mod
);
454 struct device
*dev
= rsnd_priv_to_dev(priv
);
456 dev_err(dev
, "%s%d is not empty\n",
462 io
->mod
[mod
->type
] = mod
;
468 int rsnd_dai_id(struct rsnd_priv
*priv
, struct rsnd_dai
*rdai
)
470 int id
= rdai
- priv
->rdai
;
472 if ((id
< 0) || (id
>= rsnd_rdai_nr(priv
)))
478 struct rsnd_dai
*rsnd_dai_get(struct rsnd_priv
*priv
, int id
)
480 if ((id
< 0) || (id
>= rsnd_rdai_nr(priv
)))
483 return priv
->rdai
+ id
;
486 static struct rsnd_dai
*rsnd_dai_to_rdai(struct snd_soc_dai
*dai
)
488 struct rsnd_priv
*priv
= snd_soc_dai_get_drvdata(dai
);
490 return rsnd_dai_get(priv
, dai
->id
);
493 int rsnd_dai_is_play(struct rsnd_dai
*rdai
, struct rsnd_dai_stream
*io
)
495 return &rdai
->playback
== io
;
499 * rsnd_soc_dai functions
501 int rsnd_dai_pointer_offset(struct rsnd_dai_stream
*io
, int additional
)
503 struct snd_pcm_substream
*substream
= io
->substream
;
504 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
505 int pos
= io
->byte_pos
+ additional
;
507 pos
%= (runtime
->periods
* io
->byte_per_period
);
512 void rsnd_dai_pointer_update(struct rsnd_dai_stream
*io
, int byte
)
514 io
->byte_pos
+= byte
;
516 if (io
->byte_pos
>= io
->next_period_byte
) {
517 struct snd_pcm_substream
*substream
= io
->substream
;
518 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
521 io
->next_period_byte
+= io
->byte_per_period
;
523 if (io
->period_pos
>= runtime
->periods
) {
526 io
->next_period_byte
= io
->byte_per_period
;
529 snd_pcm_period_elapsed(substream
);
533 static int rsnd_dai_stream_init(struct rsnd_dai_stream
*io
,
534 struct snd_pcm_substream
*substream
)
536 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
538 io
->substream
= substream
;
541 io
->byte_per_period
= runtime
->period_size
*
543 samples_to_bytes(runtime
, 1);
544 io
->next_period_byte
= io
->byte_per_period
;
550 struct snd_soc_dai
*rsnd_substream_to_dai(struct snd_pcm_substream
*substream
)
552 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
558 struct rsnd_dai_stream
*rsnd_rdai_to_io(struct rsnd_dai
*rdai
,
559 struct snd_pcm_substream
*substream
)
561 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
562 return &rdai
->playback
;
564 return &rdai
->capture
;
567 static int rsnd_soc_dai_trigger(struct snd_pcm_substream
*substream
, int cmd
,
568 struct snd_soc_dai
*dai
)
570 struct rsnd_priv
*priv
= snd_soc_dai_get_drvdata(dai
);
571 struct rsnd_dai
*rdai
= rsnd_dai_to_rdai(dai
);
572 struct rsnd_dai_stream
*io
= rsnd_rdai_to_io(rdai
, substream
);
573 int ssi_id
= rsnd_mod_id(rsnd_io_to_mod_ssi(io
));
577 rsnd_lock(priv
, flags
);
580 case SNDRV_PCM_TRIGGER_START
:
581 ret
= rsnd_dai_stream_init(io
, substream
);
583 goto dai_trigger_end
;
585 ret
= rsnd_platform_call(priv
, dai
, start
, ssi_id
);
587 goto dai_trigger_end
;
589 ret
= rsnd_dai_call(init
, io
, rdai
);
591 goto dai_trigger_end
;
593 ret
= rsnd_dai_call(start
, io
, rdai
);
595 goto dai_trigger_end
;
597 case SNDRV_PCM_TRIGGER_STOP
:
598 ret
= rsnd_dai_call(stop
, io
, rdai
);
600 goto dai_trigger_end
;
602 ret
= rsnd_dai_call(quit
, io
, rdai
);
604 goto dai_trigger_end
;
606 ret
= rsnd_platform_call(priv
, dai
, stop
, ssi_id
);
608 goto dai_trigger_end
;
615 rsnd_unlock(priv
, flags
);
620 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
622 struct rsnd_dai
*rdai
= rsnd_dai_to_rdai(dai
);
624 /* set master/slave audio interface */
625 switch (fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
626 case SND_SOC_DAIFMT_CBM_CFM
:
627 rdai
->clk_master
= 0;
629 case SND_SOC_DAIFMT_CBS_CFS
:
630 rdai
->clk_master
= 1; /* codec is slave, cpu is master */
636 /* set clock inversion */
637 switch (fmt
& SND_SOC_DAIFMT_INV_MASK
) {
638 case SND_SOC_DAIFMT_NB_IF
:
639 rdai
->bit_clk_inv
= 0;
640 rdai
->frm_clk_inv
= 1;
642 case SND_SOC_DAIFMT_IB_NF
:
643 rdai
->bit_clk_inv
= 1;
644 rdai
->frm_clk_inv
= 0;
646 case SND_SOC_DAIFMT_IB_IF
:
647 rdai
->bit_clk_inv
= 1;
648 rdai
->frm_clk_inv
= 1;
650 case SND_SOC_DAIFMT_NB_NF
:
652 rdai
->bit_clk_inv
= 0;
653 rdai
->frm_clk_inv
= 0;
658 switch (fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
659 case SND_SOC_DAIFMT_I2S
:
661 rdai
->data_alignment
= 0;
663 case SND_SOC_DAIFMT_LEFT_J
:
665 rdai
->data_alignment
= 0;
667 case SND_SOC_DAIFMT_RIGHT_J
:
669 rdai
->data_alignment
= 1;
676 static const struct snd_soc_dai_ops rsnd_soc_dai_ops
= {
677 .trigger
= rsnd_soc_dai_trigger
,
678 .set_fmt
= rsnd_soc_dai_set_fmt
,
681 #define rsnd_path_parse(priv, io, type) \
683 struct rsnd_mod *mod; \
687 if (rsnd_is_enable_path(io, type)) { \
688 id = rsnd_info_id(priv, io, type); \
690 mod = rsnd_##type##_mod_get(priv, id); \
691 ret = rsnd_dai_connect(mod, io); \
697 static int rsnd_path_init(struct rsnd_priv
*priv
,
698 struct rsnd_dai
*rdai
,
699 struct rsnd_dai_stream
*io
)
704 * Gen1 is created by SRU/SSI, and this SRU is base module of
705 * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU)
708 * Gen1 SRU = Gen2 SCU + SSIU + etc
710 * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
715 ret
= rsnd_path_parse(priv
, io
, src
);
720 ret
= rsnd_path_parse(priv
, io
, ssi
);
725 ret
= rsnd_path_parse(priv
, io
, dvc
);
732 static void rsnd_of_parse_dai(struct platform_device
*pdev
,
733 const struct rsnd_of_data
*of_data
,
734 struct rsnd_priv
*priv
)
736 struct device_node
*dai_node
, *dai_np
;
737 struct device_node
*ssi_node
, *ssi_np
;
738 struct device_node
*src_node
, *src_np
;
739 struct device_node
*playback
, *capture
;
740 struct rsnd_dai_platform_info
*dai_info
;
741 struct rcar_snd_info
*info
= rsnd_priv_to_info(priv
);
742 struct device
*dev
= &pdev
->dev
;
744 int dai_i
, ssi_i
, src_i
;
749 dai_node
= of_get_child_by_name(dev
->of_node
, "rcar_sound,dai");
753 nr
= of_get_child_count(dai_node
);
757 dai_info
= devm_kzalloc(dev
,
758 sizeof(struct rsnd_dai_platform_info
) * nr
,
761 dev_err(dev
, "dai info allocation error\n");
765 info
->dai_info_nr
= nr
;
766 info
->dai_info
= dai_info
;
768 ssi_node
= of_get_child_by_name(dev
->of_node
, "rcar_sound,ssi");
769 src_node
= of_get_child_by_name(dev
->of_node
, "rcar_sound,src");
771 #define mod_parse(name) \
773 struct rsnd_##name##_platform_info *name##_info; \
776 for_each_child_of_node(name##_node, name##_np) { \
777 name##_info = info->name##_info + name##_i; \
779 if (name##_np == playback) \
780 dai_info->playback.name = name##_info; \
781 if (name##_np == capture) \
782 dai_info->capture.name = name##_info; \
792 for_each_child_of_node(dai_node
, dai_np
) {
793 dai_info
= info
->dai_info
+ dai_i
;
797 playback
= of_parse_phandle(dai_np
, "playback", i
);
798 capture
= of_parse_phandle(dai_np
, "capture", i
);
800 if (!playback
&& !capture
)
807 of_node_put(playback
);
809 of_node_put(capture
);
816 static int rsnd_dai_probe(struct platform_device
*pdev
,
817 const struct rsnd_of_data
*of_data
,
818 struct rsnd_priv
*priv
)
820 struct snd_soc_dai_driver
*drv
;
821 struct rcar_snd_info
*info
= rsnd_priv_to_info(priv
);
822 struct rsnd_dai
*rdai
;
823 struct rsnd_ssi_platform_info
*pmod
, *cmod
;
824 struct device
*dev
= rsnd_priv_to_dev(priv
);
828 rsnd_of_parse_dai(pdev
, of_data
, priv
);
830 dai_nr
= info
->dai_info_nr
;
832 dev_err(dev
, "no dai\n");
836 drv
= devm_kzalloc(dev
, sizeof(*drv
) * dai_nr
, GFP_KERNEL
);
837 rdai
= devm_kzalloc(dev
, sizeof(*rdai
) * dai_nr
, GFP_KERNEL
);
839 dev_err(dev
, "dai allocate failed\n");
843 priv
->rdai_nr
= dai_nr
;
847 for (i
= 0; i
< dai_nr
; i
++) {
848 rdai
[i
].info
= &info
->dai_info
[i
];
850 pmod
= rdai
[i
].info
->playback
.ssi
;
851 cmod
= rdai
[i
].info
->capture
.ssi
;
856 snprintf(rdai
[i
].name
, RSND_DAI_NAME_SIZE
, "rsnd-dai.%d", i
);
859 * init snd_soc_dai_driver
861 drv
[i
].name
= rdai
[i
].name
;
862 drv
[i
].ops
= &rsnd_soc_dai_ops
;
864 drv
[i
].playback
.rates
= RSND_RATES
;
865 drv
[i
].playback
.formats
= RSND_FMTS
;
866 drv
[i
].playback
.channels_min
= 2;
867 drv
[i
].playback
.channels_max
= 2;
869 rdai
[i
].playback
.info
= &info
->dai_info
[i
].playback
;
870 rsnd_path_init(priv
, &rdai
[i
], &rdai
[i
].playback
);
873 drv
[i
].capture
.rates
= RSND_RATES
;
874 drv
[i
].capture
.formats
= RSND_FMTS
;
875 drv
[i
].capture
.channels_min
= 2;
876 drv
[i
].capture
.channels_max
= 2;
878 rdai
[i
].capture
.info
= &info
->dai_info
[i
].capture
;
879 rsnd_path_init(priv
, &rdai
[i
], &rdai
[i
].capture
);
882 dev_dbg(dev
, "%s (%s/%s)\n", rdai
[i
].name
,
883 pmod
? "play" : " -- ",
884 cmod
? "capture" : " -- ");
893 static struct snd_pcm_hardware rsnd_pcm_hardware
= {
894 .info
= SNDRV_PCM_INFO_INTERLEAVED
|
895 SNDRV_PCM_INFO_MMAP
|
896 SNDRV_PCM_INFO_MMAP_VALID
|
897 SNDRV_PCM_INFO_PAUSE
,
898 .buffer_bytes_max
= 64 * 1024,
899 .period_bytes_min
= 32,
900 .period_bytes_max
= 8192,
906 static int rsnd_pcm_open(struct snd_pcm_substream
*substream
)
908 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
911 snd_soc_set_runtime_hwparams(substream
, &rsnd_pcm_hardware
);
913 ret
= snd_pcm_hw_constraint_integer(runtime
,
914 SNDRV_PCM_HW_PARAM_PERIODS
);
919 static int rsnd_hw_params(struct snd_pcm_substream
*substream
,
920 struct snd_pcm_hw_params
*hw_params
)
922 return snd_pcm_lib_malloc_pages(substream
,
923 params_buffer_bytes(hw_params
));
926 static snd_pcm_uframes_t
rsnd_pointer(struct snd_pcm_substream
*substream
)
928 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
929 struct snd_soc_dai
*dai
= rsnd_substream_to_dai(substream
);
930 struct rsnd_dai
*rdai
= rsnd_dai_to_rdai(dai
);
931 struct rsnd_dai_stream
*io
= rsnd_rdai_to_io(rdai
, substream
);
933 return bytes_to_frames(runtime
, io
->byte_pos
);
936 static struct snd_pcm_ops rsnd_pcm_ops
= {
937 .open
= rsnd_pcm_open
,
938 .ioctl
= snd_pcm_lib_ioctl
,
939 .hw_params
= rsnd_hw_params
,
940 .hw_free
= snd_pcm_lib_free_pages
,
941 .pointer
= rsnd_pointer
,
948 #define PREALLOC_BUFFER (32 * 1024)
949 #define PREALLOC_BUFFER_MAX (32 * 1024)
951 static int rsnd_pcm_new(struct snd_soc_pcm_runtime
*rtd
)
953 struct rsnd_priv
*priv
= snd_soc_dai_get_drvdata(rtd
->cpu_dai
);
954 struct rsnd_dai
*rdai
;
957 for_each_rsnd_dai(rdai
, priv
, i
) {
958 ret
= rsnd_dai_call(pcm_new
, &rdai
->playback
, rdai
, rtd
);
962 ret
= rsnd_dai_call(pcm_new
, &rdai
->capture
, rdai
, rtd
);
967 return snd_pcm_lib_preallocate_pages_for_all(
970 rtd
->card
->snd_card
->dev
,
971 PREALLOC_BUFFER
, PREALLOC_BUFFER_MAX
);
974 static void rsnd_pcm_free(struct snd_pcm
*pcm
)
976 snd_pcm_lib_preallocate_free_for_all(pcm
);
979 static struct snd_soc_platform_driver rsnd_soc_platform
= {
980 .ops
= &rsnd_pcm_ops
,
981 .pcm_new
= rsnd_pcm_new
,
982 .pcm_free
= rsnd_pcm_free
,
985 static const struct snd_soc_component_driver rsnd_soc_component
= {
992 static int rsnd_probe(struct platform_device
*pdev
)
994 struct rcar_snd_info
*info
;
995 struct rsnd_priv
*priv
;
996 struct device
*dev
= &pdev
->dev
;
997 struct rsnd_dai
*rdai
;
998 const struct of_device_id
*of_id
= of_match_device(rsnd_of_match
, dev
);
999 const struct rsnd_of_data
*of_data
;
1000 int (*probe_func
[])(struct platform_device
*pdev
,
1001 const struct rsnd_of_data
*of_data
,
1002 struct rsnd_priv
*priv
) = {
1015 info
= devm_kzalloc(&pdev
->dev
,
1016 sizeof(struct rcar_snd_info
), GFP_KERNEL
);
1017 of_data
= of_id
->data
;
1019 info
= pdev
->dev
.platform_data
;
1023 dev_err(dev
, "driver needs R-Car sound information\n");
1030 priv
= devm_kzalloc(dev
, sizeof(*priv
), GFP_KERNEL
);
1032 dev_err(dev
, "priv allocate failed\n");
1038 spin_lock_init(&priv
->lock
);
1043 for (i
= 0; i
< ARRAY_SIZE(probe_func
); i
++) {
1044 ret
= probe_func
[i
](pdev
, of_data
, priv
);
1049 for_each_rsnd_dai(rdai
, priv
, i
) {
1050 ret
= rsnd_dai_call(probe
, &rdai
->playback
, rdai
);
1054 ret
= rsnd_dai_call(probe
, &rdai
->capture
, rdai
);
1062 ret
= snd_soc_register_platform(dev
, &rsnd_soc_platform
);
1064 dev_err(dev
, "cannot snd soc register\n");
1068 ret
= snd_soc_register_component(dev
, &rsnd_soc_component
,
1069 priv
->daidrv
, rsnd_rdai_nr(priv
));
1071 dev_err(dev
, "cannot snd dai register\n");
1075 dev_set_drvdata(dev
, priv
);
1077 pm_runtime_enable(dev
);
1079 dev_info(dev
, "probed\n");
1083 snd_soc_unregister_platform(dev
);
1088 static int rsnd_remove(struct platform_device
*pdev
)
1090 struct rsnd_priv
*priv
= dev_get_drvdata(&pdev
->dev
);
1091 struct rsnd_dai
*rdai
;
1094 pm_runtime_disable(&pdev
->dev
);
1096 for_each_rsnd_dai(rdai
, priv
, i
) {
1097 ret
= rsnd_dai_call(remove
, &rdai
->playback
, rdai
);
1101 ret
= rsnd_dai_call(remove
, &rdai
->capture
, rdai
);
1109 static struct platform_driver rsnd_driver
= {
1111 .name
= "rcar_sound",
1112 .of_match_table
= rsnd_of_match
,
1114 .probe
= rsnd_probe
,
1115 .remove
= rsnd_remove
,
1117 module_platform_driver(rsnd_driver
);
1119 MODULE_LICENSE("GPL");
1120 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1121 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1122 MODULE_ALIAS("platform:rcar-pcm-audio");