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_priv
*priv
,
153 struct rsnd_mod
*mod
,
154 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");
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
);
370 void rsnd_dma_quit(struct rsnd_priv
*priv
,
371 struct rsnd_dma
*dma
)
374 dma_release_channel(dma
->chan
);
382 u32
rsnd_get_adinr(struct rsnd_mod
*mod
)
384 struct rsnd_priv
*priv
= rsnd_mod_to_priv(mod
);
385 struct rsnd_dai_stream
*io
= rsnd_mod_to_io(mod
);
386 struct snd_pcm_runtime
*runtime
= rsnd_io_to_runtime(io
);
387 struct device
*dev
= rsnd_priv_to_dev(priv
);
388 u32 adinr
= runtime
->channels
;
390 switch (runtime
->sample_bits
) {
398 dev_warn(dev
, "not supported sample bits\n");
408 #define __rsnd_mod_call(mod, func, rdai...) \
410 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \
411 struct device *dev = rsnd_priv_to_dev(priv); \
412 dev_dbg(dev, "%s [%d] %s\n", \
413 rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \
414 (mod)->ops->func(mod, rdai); \
417 #define rsnd_mod_call(mod, func, rdai...) \
418 (!(mod) ? -ENODEV : \
419 !((mod)->ops->func) ? 0 : \
420 __rsnd_mod_call(mod, func, rdai))
422 #define rsnd_dai_call(fn, io, rdai...) \
424 struct rsnd_mod *mod; \
426 for (i = 0; i < RSND_MOD_MAX; i++) { \
427 mod = (io)->mod[i]; \
430 ret = rsnd_mod_call(mod, fn, rdai); \
437 static int rsnd_dai_connect(struct rsnd_mod
*mod
,
438 struct rsnd_dai_stream
*io
)
443 if (io
->mod
[mod
->type
]) {
444 struct rsnd_priv
*priv
= rsnd_mod_to_priv(mod
);
445 struct device
*dev
= rsnd_priv_to_dev(priv
);
447 dev_err(dev
, "%s%d is not empty\n",
453 io
->mod
[mod
->type
] = mod
;
459 int rsnd_dai_id(struct rsnd_priv
*priv
, struct rsnd_dai
*rdai
)
461 int id
= rdai
- priv
->rdai
;
463 if ((id
< 0) || (id
>= rsnd_rdai_nr(priv
)))
469 struct rsnd_dai
*rsnd_dai_get(struct rsnd_priv
*priv
, int id
)
471 if ((id
< 0) || (id
>= rsnd_rdai_nr(priv
)))
474 return priv
->rdai
+ id
;
477 static struct rsnd_dai
*rsnd_dai_to_rdai(struct snd_soc_dai
*dai
)
479 struct rsnd_priv
*priv
= snd_soc_dai_get_drvdata(dai
);
481 return rsnd_dai_get(priv
, dai
->id
);
484 int rsnd_dai_is_play(struct rsnd_dai
*rdai
, struct rsnd_dai_stream
*io
)
486 return &rdai
->playback
== io
;
490 * rsnd_soc_dai functions
492 int rsnd_dai_pointer_offset(struct rsnd_dai_stream
*io
, int additional
)
494 struct snd_pcm_substream
*substream
= io
->substream
;
495 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
496 int pos
= io
->byte_pos
+ additional
;
498 pos
%= (runtime
->periods
* io
->byte_per_period
);
503 void rsnd_dai_pointer_update(struct rsnd_dai_stream
*io
, int byte
)
505 io
->byte_pos
+= byte
;
507 if (io
->byte_pos
>= io
->next_period_byte
) {
508 struct snd_pcm_substream
*substream
= io
->substream
;
509 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
512 io
->next_period_byte
+= io
->byte_per_period
;
514 if (io
->period_pos
>= runtime
->periods
) {
517 io
->next_period_byte
= io
->byte_per_period
;
520 snd_pcm_period_elapsed(substream
);
524 static int rsnd_dai_stream_init(struct rsnd_dai_stream
*io
,
525 struct snd_pcm_substream
*substream
)
527 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
529 io
->substream
= substream
;
532 io
->byte_per_period
= runtime
->period_size
*
534 samples_to_bytes(runtime
, 1);
535 io
->next_period_byte
= io
->byte_per_period
;
541 struct snd_soc_dai
*rsnd_substream_to_dai(struct snd_pcm_substream
*substream
)
543 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
549 struct rsnd_dai_stream
*rsnd_rdai_to_io(struct rsnd_dai
*rdai
,
550 struct snd_pcm_substream
*substream
)
552 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
553 return &rdai
->playback
;
555 return &rdai
->capture
;
558 static int rsnd_soc_dai_trigger(struct snd_pcm_substream
*substream
, int cmd
,
559 struct snd_soc_dai
*dai
)
561 struct rsnd_priv
*priv
= snd_soc_dai_get_drvdata(dai
);
562 struct rsnd_dai
*rdai
= rsnd_dai_to_rdai(dai
);
563 struct rsnd_dai_stream
*io
= rsnd_rdai_to_io(rdai
, substream
);
564 int ssi_id
= rsnd_mod_id(rsnd_io_to_mod_ssi(io
));
568 rsnd_lock(priv
, flags
);
571 case SNDRV_PCM_TRIGGER_START
:
572 ret
= rsnd_dai_stream_init(io
, substream
);
574 goto dai_trigger_end
;
576 ret
= rsnd_platform_call(priv
, dai
, start
, ssi_id
);
578 goto dai_trigger_end
;
580 ret
= rsnd_dai_call(init
, io
, rdai
);
582 goto dai_trigger_end
;
584 ret
= rsnd_dai_call(start
, io
, rdai
);
586 goto dai_trigger_end
;
588 case SNDRV_PCM_TRIGGER_STOP
:
589 ret
= rsnd_dai_call(stop
, io
, rdai
);
591 goto dai_trigger_end
;
593 ret
= rsnd_dai_call(quit
, io
, rdai
);
595 goto dai_trigger_end
;
597 ret
= rsnd_platform_call(priv
, dai
, stop
, ssi_id
);
599 goto dai_trigger_end
;
606 rsnd_unlock(priv
, flags
);
611 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
613 struct rsnd_dai
*rdai
= rsnd_dai_to_rdai(dai
);
615 /* set master/slave audio interface */
616 switch (fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
617 case SND_SOC_DAIFMT_CBM_CFM
:
618 rdai
->clk_master
= 0;
620 case SND_SOC_DAIFMT_CBS_CFS
:
621 rdai
->clk_master
= 1; /* codec is slave, cpu is master */
628 switch (fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
629 case SND_SOC_DAIFMT_I2S
:
631 rdai
->data_alignment
= 0;
632 rdai
->frm_clk_inv
= 0;
634 case SND_SOC_DAIFMT_LEFT_J
:
636 rdai
->data_alignment
= 0;
637 rdai
->frm_clk_inv
= 1;
639 case SND_SOC_DAIFMT_RIGHT_J
:
641 rdai
->data_alignment
= 1;
642 rdai
->frm_clk_inv
= 1;
646 /* set clock inversion */
647 switch (fmt
& SND_SOC_DAIFMT_INV_MASK
) {
648 case SND_SOC_DAIFMT_NB_IF
:
649 rdai
->bit_clk_inv
= rdai
->bit_clk_inv
;
650 rdai
->frm_clk_inv
= !rdai
->frm_clk_inv
;
652 case SND_SOC_DAIFMT_IB_NF
:
653 rdai
->bit_clk_inv
= !rdai
->bit_clk_inv
;
654 rdai
->frm_clk_inv
= rdai
->frm_clk_inv
;
656 case SND_SOC_DAIFMT_IB_IF
:
657 rdai
->bit_clk_inv
= !rdai
->bit_clk_inv
;
658 rdai
->frm_clk_inv
= !rdai
->frm_clk_inv
;
660 case SND_SOC_DAIFMT_NB_NF
:
668 static const struct snd_soc_dai_ops rsnd_soc_dai_ops
= {
669 .trigger
= rsnd_soc_dai_trigger
,
670 .set_fmt
= rsnd_soc_dai_set_fmt
,
673 #define rsnd_path_parse(priv, io, type) \
675 struct rsnd_mod *mod; \
679 if (rsnd_is_enable_path(io, type)) { \
680 id = rsnd_info_id(priv, io, type); \
682 mod = rsnd_##type##_mod_get(priv, id); \
683 ret = rsnd_dai_connect(mod, io); \
689 static int rsnd_path_init(struct rsnd_priv
*priv
,
690 struct rsnd_dai
*rdai
,
691 struct rsnd_dai_stream
*io
)
696 * Gen1 is created by SRU/SSI, and this SRU is base module of
697 * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU)
700 * Gen1 SRU = Gen2 SCU + SSIU + etc
702 * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
707 ret
= rsnd_path_parse(priv
, io
, src
);
712 ret
= rsnd_path_parse(priv
, io
, ssi
);
717 ret
= rsnd_path_parse(priv
, io
, dvc
);
724 static void rsnd_of_parse_dai(struct platform_device
*pdev
,
725 const struct rsnd_of_data
*of_data
,
726 struct rsnd_priv
*priv
)
728 struct device_node
*dai_node
, *dai_np
;
729 struct device_node
*ssi_node
, *ssi_np
;
730 struct device_node
*src_node
, *src_np
;
731 struct device_node
*dvc_node
, *dvc_np
;
732 struct device_node
*playback
, *capture
;
733 struct rsnd_dai_platform_info
*dai_info
;
734 struct rcar_snd_info
*info
= rsnd_priv_to_info(priv
);
735 struct device
*dev
= &pdev
->dev
;
737 int dai_i
, ssi_i
, src_i
, dvc_i
;
742 dai_node
= of_get_child_by_name(dev
->of_node
, "rcar_sound,dai");
746 nr
= of_get_child_count(dai_node
);
750 dai_info
= devm_kzalloc(dev
,
751 sizeof(struct rsnd_dai_platform_info
) * nr
,
754 dev_err(dev
, "dai info allocation error\n");
758 info
->dai_info_nr
= nr
;
759 info
->dai_info
= dai_info
;
761 ssi_node
= of_get_child_by_name(dev
->of_node
, "rcar_sound,ssi");
762 src_node
= of_get_child_by_name(dev
->of_node
, "rcar_sound,src");
763 dvc_node
= of_get_child_by_name(dev
->of_node
, "rcar_sound,dvc");
765 #define mod_parse(name) \
767 struct rsnd_##name##_platform_info *name##_info; \
770 for_each_child_of_node(name##_node, name##_np) { \
771 name##_info = info->name##_info + name##_i; \
773 if (name##_np == playback) \
774 dai_info->playback.name = name##_info; \
775 if (name##_np == capture) \
776 dai_info->capture.name = name##_info; \
786 for_each_child_of_node(dai_node
, dai_np
) {
787 dai_info
= info
->dai_info
+ dai_i
;
791 playback
= of_parse_phandle(dai_np
, "playback", i
);
792 capture
= of_parse_phandle(dai_np
, "capture", i
);
794 if (!playback
&& !capture
)
802 of_node_put(playback
);
804 of_node_put(capture
);
811 static int rsnd_dai_probe(struct platform_device
*pdev
,
812 const struct rsnd_of_data
*of_data
,
813 struct rsnd_priv
*priv
)
815 struct snd_soc_dai_driver
*drv
;
816 struct rcar_snd_info
*info
= rsnd_priv_to_info(priv
);
817 struct rsnd_dai
*rdai
;
818 struct rsnd_ssi_platform_info
*pmod
, *cmod
;
819 struct device
*dev
= rsnd_priv_to_dev(priv
);
823 rsnd_of_parse_dai(pdev
, of_data
, priv
);
825 dai_nr
= info
->dai_info_nr
;
827 dev_err(dev
, "no dai\n");
831 drv
= devm_kzalloc(dev
, sizeof(*drv
) * dai_nr
, GFP_KERNEL
);
832 rdai
= devm_kzalloc(dev
, sizeof(*rdai
) * dai_nr
, GFP_KERNEL
);
834 dev_err(dev
, "dai allocate failed\n");
838 priv
->rdai_nr
= dai_nr
;
842 for (i
= 0; i
< dai_nr
; i
++) {
843 rdai
[i
].info
= &info
->dai_info
[i
];
845 pmod
= rdai
[i
].info
->playback
.ssi
;
846 cmod
= rdai
[i
].info
->capture
.ssi
;
851 snprintf(rdai
[i
].name
, RSND_DAI_NAME_SIZE
, "rsnd-dai.%d", i
);
854 * init snd_soc_dai_driver
856 drv
[i
].name
= rdai
[i
].name
;
857 drv
[i
].ops
= &rsnd_soc_dai_ops
;
859 drv
[i
].playback
.rates
= RSND_RATES
;
860 drv
[i
].playback
.formats
= RSND_FMTS
;
861 drv
[i
].playback
.channels_min
= 2;
862 drv
[i
].playback
.channels_max
= 2;
864 rdai
[i
].playback
.info
= &info
->dai_info
[i
].playback
;
865 rsnd_path_init(priv
, &rdai
[i
], &rdai
[i
].playback
);
868 drv
[i
].capture
.rates
= RSND_RATES
;
869 drv
[i
].capture
.formats
= RSND_FMTS
;
870 drv
[i
].capture
.channels_min
= 2;
871 drv
[i
].capture
.channels_max
= 2;
873 rdai
[i
].capture
.info
= &info
->dai_info
[i
].capture
;
874 rsnd_path_init(priv
, &rdai
[i
], &rdai
[i
].capture
);
877 dev_dbg(dev
, "%s (%s/%s)\n", rdai
[i
].name
,
878 pmod
? "play" : " -- ",
879 cmod
? "capture" : " -- ");
888 static struct snd_pcm_hardware rsnd_pcm_hardware
= {
889 .info
= SNDRV_PCM_INFO_INTERLEAVED
|
890 SNDRV_PCM_INFO_MMAP
|
891 SNDRV_PCM_INFO_MMAP_VALID
|
892 SNDRV_PCM_INFO_PAUSE
,
893 .buffer_bytes_max
= 64 * 1024,
894 .period_bytes_min
= 32,
895 .period_bytes_max
= 8192,
901 static int rsnd_pcm_open(struct snd_pcm_substream
*substream
)
903 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
906 snd_soc_set_runtime_hwparams(substream
, &rsnd_pcm_hardware
);
908 ret
= snd_pcm_hw_constraint_integer(runtime
,
909 SNDRV_PCM_HW_PARAM_PERIODS
);
914 static int rsnd_hw_params(struct snd_pcm_substream
*substream
,
915 struct snd_pcm_hw_params
*hw_params
)
917 return snd_pcm_lib_malloc_pages(substream
,
918 params_buffer_bytes(hw_params
));
921 static snd_pcm_uframes_t
rsnd_pointer(struct snd_pcm_substream
*substream
)
923 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
924 struct snd_soc_dai
*dai
= rsnd_substream_to_dai(substream
);
925 struct rsnd_dai
*rdai
= rsnd_dai_to_rdai(dai
);
926 struct rsnd_dai_stream
*io
= rsnd_rdai_to_io(rdai
, substream
);
928 return bytes_to_frames(runtime
, io
->byte_pos
);
931 static struct snd_pcm_ops rsnd_pcm_ops
= {
932 .open
= rsnd_pcm_open
,
933 .ioctl
= snd_pcm_lib_ioctl
,
934 .hw_params
= rsnd_hw_params
,
935 .hw_free
= snd_pcm_lib_free_pages
,
936 .pointer
= rsnd_pointer
,
943 #define PREALLOC_BUFFER (32 * 1024)
944 #define PREALLOC_BUFFER_MAX (32 * 1024)
946 static int rsnd_pcm_new(struct snd_soc_pcm_runtime
*rtd
)
948 struct snd_soc_dai
*dai
= rtd
->cpu_dai
;
949 struct rsnd_dai
*rdai
= rsnd_dai_to_rdai(dai
);
952 ret
= rsnd_dai_call(pcm_new
, &rdai
->playback
, rdai
, rtd
);
956 ret
= rsnd_dai_call(pcm_new
, &rdai
->capture
, rdai
, rtd
);
960 return snd_pcm_lib_preallocate_pages_for_all(
963 rtd
->card
->snd_card
->dev
,
964 PREALLOC_BUFFER
, PREALLOC_BUFFER_MAX
);
967 static void rsnd_pcm_free(struct snd_pcm
*pcm
)
969 snd_pcm_lib_preallocate_free_for_all(pcm
);
972 static struct snd_soc_platform_driver rsnd_soc_platform
= {
973 .ops
= &rsnd_pcm_ops
,
974 .pcm_new
= rsnd_pcm_new
,
975 .pcm_free
= rsnd_pcm_free
,
978 static const struct snd_soc_component_driver rsnd_soc_component
= {
985 static int rsnd_probe(struct platform_device
*pdev
)
987 struct rcar_snd_info
*info
;
988 struct rsnd_priv
*priv
;
989 struct device
*dev
= &pdev
->dev
;
990 struct rsnd_dai
*rdai
;
991 const struct of_device_id
*of_id
= of_match_device(rsnd_of_match
, dev
);
992 const struct rsnd_of_data
*of_data
;
993 int (*probe_func
[])(struct platform_device
*pdev
,
994 const struct rsnd_of_data
*of_data
,
995 struct rsnd_priv
*priv
) = {
1008 info
= devm_kzalloc(&pdev
->dev
,
1009 sizeof(struct rcar_snd_info
), GFP_KERNEL
);
1010 of_data
= of_id
->data
;
1012 info
= pdev
->dev
.platform_data
;
1016 dev_err(dev
, "driver needs R-Car sound information\n");
1023 priv
= devm_kzalloc(dev
, sizeof(*priv
), GFP_KERNEL
);
1025 dev_err(dev
, "priv allocate failed\n");
1031 spin_lock_init(&priv
->lock
);
1036 for (i
= 0; i
< ARRAY_SIZE(probe_func
); i
++) {
1037 ret
= probe_func
[i
](pdev
, of_data
, priv
);
1042 for_each_rsnd_dai(rdai
, priv
, i
) {
1043 ret
= rsnd_dai_call(probe
, &rdai
->playback
, rdai
);
1045 goto exit_snd_probe
;
1047 ret
= rsnd_dai_call(probe
, &rdai
->capture
, rdai
);
1049 goto exit_snd_probe
;
1055 ret
= snd_soc_register_platform(dev
, &rsnd_soc_platform
);
1057 dev_err(dev
, "cannot snd soc register\n");
1061 ret
= snd_soc_register_component(dev
, &rsnd_soc_component
,
1062 priv
->daidrv
, rsnd_rdai_nr(priv
));
1064 dev_err(dev
, "cannot snd dai register\n");
1068 dev_set_drvdata(dev
, priv
);
1070 pm_runtime_enable(dev
);
1072 dev_info(dev
, "probed\n");
1076 snd_soc_unregister_platform(dev
);
1078 for_each_rsnd_dai(rdai
, priv
, i
) {
1079 rsnd_dai_call(remove
, &rdai
->playback
, rdai
);
1080 rsnd_dai_call(remove
, &rdai
->capture
, rdai
);
1086 static int rsnd_remove(struct platform_device
*pdev
)
1088 struct rsnd_priv
*priv
= dev_get_drvdata(&pdev
->dev
);
1089 struct rsnd_dai
*rdai
;
1092 pm_runtime_disable(&pdev
->dev
);
1094 for_each_rsnd_dai(rdai
, priv
, i
) {
1095 ret
|= rsnd_dai_call(remove
, &rdai
->playback
, rdai
);
1096 ret
|= rsnd_dai_call(remove
, &rdai
->capture
, rdai
);
1102 static struct platform_driver rsnd_driver
= {
1104 .name
= "rcar_sound",
1105 .of_match_table
= rsnd_of_match
,
1107 .probe
= rsnd_probe
,
1108 .remove
= rsnd_remove
,
1110 module_platform_driver(rsnd_driver
);
1112 MODULE_LICENSE("GPL");
1113 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1114 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1115 MODULE_ALIAS("platform:rcar-pcm-audio");