2 * Renesas R-Car 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.
14 #include <linux/delay.h>
16 #define RSND_SSI_NAME_SIZE 16
21 #define FORCE (1 << 31) /* Fixed */
22 #define DMEN (1 << 28) /* DMA Enable */
23 #define UIEN (1 << 27) /* Underflow Interrupt Enable */
24 #define OIEN (1 << 26) /* Overflow Interrupt Enable */
25 #define IIEN (1 << 25) /* Idle Mode Interrupt Enable */
26 #define DIEN (1 << 24) /* Data Interrupt Enable */
27 #define CHNL_4 (1 << 22) /* Channels */
28 #define CHNL_6 (2 << 22) /* Channels */
29 #define CHNL_8 (3 << 22) /* Channels */
30 #define DWL_8 (0 << 19) /* Data Word Length */
31 #define DWL_16 (1 << 19) /* Data Word Length */
32 #define DWL_18 (2 << 19) /* Data Word Length */
33 #define DWL_20 (3 << 19) /* Data Word Length */
34 #define DWL_22 (4 << 19) /* Data Word Length */
35 #define DWL_24 (5 << 19) /* Data Word Length */
36 #define DWL_32 (6 << 19) /* Data Word Length */
38 #define SWL_32 (3 << 16) /* R/W System Word Length */
39 #define SCKD (1 << 15) /* Serial Bit Clock Direction */
40 #define SWSD (1 << 14) /* Serial WS Direction */
41 #define SCKP (1 << 13) /* Serial Bit Clock Polarity */
42 #define SWSP (1 << 12) /* Serial WS Polarity */
43 #define SDTA (1 << 10) /* Serial Data Alignment */
44 #define PDTA (1 << 9) /* Parallel Data Alignment */
45 #define DEL (1 << 8) /* Serial Data Delay */
46 #define CKDV(v) (v << 4) /* Serial Clock Division Ratio */
47 #define TRMD (1 << 1) /* Transmit/Receive Mode Select */
48 #define EN (1 << 0) /* SSI Module Enable */
53 #define UIRQ (1 << 27) /* Underflow Error Interrupt Status */
54 #define OIRQ (1 << 26) /* Overflow Error Interrupt Status */
55 #define IIRQ (1 << 25) /* Idle Mode Interrupt Status */
56 #define DIRQ (1 << 24) /* Data Interrupt Status Flag */
61 #define CONT (1 << 8) /* WS Continue Function */
62 #define WS_MODE (1 << 0) /* WS Mode */
64 #define SSI_NAME "ssi"
82 #define RSND_SSI_CLK_PIN_SHARE (1 << 0)
83 #define RSND_SSI_NO_BUSIF (1 << 1) /* SSI+DMA without BUSIF */
85 #define for_each_rsnd_ssi(pos, priv, i) \
87 (i < rsnd_ssi_nr(priv)) && \
88 ((pos) = ((struct rsnd_ssi *)(priv)->ssi + i)); \
91 #define rsnd_ssi_get(priv, id) ((struct rsnd_ssi *)(priv->ssi) + id)
92 #define rsnd_ssi_to_dma(mod) ((ssi)->dma)
93 #define rsnd_ssi_nr(priv) ((priv)->ssi_nr)
94 #define rsnd_mod_to_ssi(_mod) container_of((_mod), struct rsnd_ssi, mod)
95 #define rsnd_ssi_mode_flags(p) ((p)->flags)
96 #define rsnd_ssi_is_parent(ssi, io) ((ssi) == rsnd_io_to_mod_ssip(io))
97 #define rsnd_ssi_is_multi_slave(mod, io) \
98 (rsnd_ssi_multi_slaves(io) & (1 << rsnd_mod_id(mod)))
99 #define rsnd_ssi_is_run_mods(mod, io) \
100 (rsnd_ssi_run_mods(io) & (1 << rsnd_mod_id(mod)))
102 int rsnd_ssi_use_busif(struct rsnd_dai_stream *io)
104 struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io);
105 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
108 if (!rsnd_ssi_is_dma_mode(mod))
111 if (!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_NO_BUSIF))
113 if (rsnd_io_to_mod_src(io))
119 static void rsnd_ssi_status_clear(struct rsnd_mod *mod)
121 rsnd_mod_write(mod, SSISR, 0);
124 static u32 rsnd_ssi_status_get(struct rsnd_mod *mod)
126 return rsnd_mod_read(mod, SSISR);
129 static void rsnd_ssi_status_check(struct rsnd_mod *mod,
132 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
133 struct device *dev = rsnd_priv_to_dev(priv);
137 for (i = 0; i < 1024; i++) {
138 status = rsnd_ssi_status_get(mod);
145 dev_warn(dev, "%s[%d] status check failed\n",
146 rsnd_mod_name(mod), rsnd_mod_id(mod));
149 static u32 rsnd_ssi_multi_slaves(struct rsnd_dai_stream *io)
151 struct rsnd_mod *mod;
152 enum rsnd_mod_type types[] = {
160 for (i = 0; i < ARRAY_SIZE(types); i++) {
161 mod = rsnd_io_to_mod(io, types[i]);
165 mask |= 1 << rsnd_mod_id(mod);
171 static u32 rsnd_ssi_run_mods(struct rsnd_dai_stream *io)
173 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
174 struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io);
177 mods = rsnd_ssi_multi_slaves_runtime(io) |
178 1 << rsnd_mod_id(ssi_mod);
181 mods |= 1 << rsnd_mod_id(ssi_parent_mod);
186 u32 rsnd_ssi_multi_slaves_runtime(struct rsnd_dai_stream *io)
188 if (rsnd_runtime_is_ssi_multi(io))
189 return rsnd_ssi_multi_slaves(io);
194 static int rsnd_ssi_master_clk_start(struct rsnd_mod *mod,
195 struct rsnd_dai_stream *io)
197 struct rsnd_priv *priv = rsnd_io_to_priv(io);
198 struct device *dev = rsnd_priv_to_dev(priv);
199 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
200 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
201 struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io);
202 int chan = rsnd_runtime_channel_for_ssi(io);
204 int ssi_clk_mul_table[] = {
205 1, 2, 4, 8, 16, 6, 12,
207 unsigned int main_rate;
208 unsigned int rate = rsnd_io_is_play(io) ?
209 rsnd_src_get_out_rate(priv, io) :
210 rsnd_src_get_in_rate(priv, io);
212 if (!rsnd_rdai_is_clk_master(rdai))
215 if (ssi_parent_mod && !rsnd_ssi_is_parent(mod, io))
218 if (rsnd_ssi_is_multi_slave(mod, io))
221 if (ssi->usrcnt > 1) {
222 if (ssi->rate != rate) {
223 dev_err(dev, "SSI parent/child should use same rate\n");
231 * Find best clock, and try to start ADG
233 for (j = 0; j < ARRAY_SIZE(ssi_clk_mul_table); j++) {
236 * It will set SSIWSR.CONT here, but SSICR.CKDV = 000
237 * with it is not allowed. (SSIWSR.WS_MODE with
238 * SSICR.CKDV = 000 is not allowed either).
239 * Skip it. See SSICR.CKDV
245 * this driver is assuming that
246 * system word is 32bit x chan
247 * see rsnd_ssi_init()
249 main_rate = rate * 32 * chan * ssi_clk_mul_table[j];
251 ret = rsnd_adg_ssi_clk_try_start(mod, main_rate);
253 ssi->cr_clk = FORCE | SWL_32 |
254 SCKD | SWSD | CKDV(j);
259 dev_dbg(dev, "%s[%d] outputs %u Hz\n",
261 rsnd_mod_id(mod), rate);
267 dev_err(dev, "unsupported clock rate\n");
271 static void rsnd_ssi_master_clk_stop(struct rsnd_mod *mod,
272 struct rsnd_dai_stream *io)
274 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
275 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
276 struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io);
278 if (!rsnd_rdai_is_clk_master(rdai))
281 if (ssi_parent_mod && !rsnd_ssi_is_parent(mod, io))
290 rsnd_adg_ssi_clk_stop(mod);
293 static void rsnd_ssi_config_init(struct rsnd_mod *mod,
294 struct rsnd_dai_stream *io)
296 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
297 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
298 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
304 is_tdm = rsnd_runtime_is_ssi_tdm(io);
307 * always use 32bit system word.
308 * see also rsnd_ssi_master_clk_enable()
310 cr_own = FORCE | SWL_32 | PDTA;
312 if (rdai->bit_clk_inv)
314 if (rdai->frm_clk_inv ^ is_tdm)
316 if (rdai->data_alignment)
320 if (rsnd_io_is_play(io))
323 switch (runtime->sample_bits) {
332 if (rsnd_ssi_is_dma_mode(mod)) {
333 cr_mode = UIEN | OIEN | /* over/under run */
334 DMEN; /* DMA : enable DMA */
336 cr_mode = DIEN; /* PIO : enable Data interrupt */
342 * rsnd_ssiu_init_gen2()
350 ssi->cr_own = cr_own;
351 ssi->cr_mode = cr_mode;
355 static void rsnd_ssi_register_setup(struct rsnd_mod *mod)
357 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
359 rsnd_mod_write(mod, SSIWSR, ssi->wsr);
360 rsnd_mod_write(mod, SSICR, ssi->cr_own |
362 ssi->cr_mode); /* without EN */
366 * SSI mod common functions
368 static int rsnd_ssi_init(struct rsnd_mod *mod,
369 struct rsnd_dai_stream *io,
370 struct rsnd_priv *priv)
372 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
375 if (!rsnd_ssi_is_run_mods(mod, io))
380 rsnd_mod_power_on(mod);
382 ret = rsnd_ssi_master_clk_start(mod, io);
386 if (!rsnd_ssi_is_parent(mod, io))
387 rsnd_ssi_config_init(mod, io);
389 rsnd_ssi_register_setup(mod);
391 /* clear error status */
392 rsnd_ssi_status_clear(mod);
397 static int rsnd_ssi_quit(struct rsnd_mod *mod,
398 struct rsnd_dai_stream *io,
399 struct rsnd_priv *priv)
401 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
402 struct device *dev = rsnd_priv_to_dev(priv);
404 if (!rsnd_ssi_is_run_mods(mod, io))
408 dev_err(dev, "%s[%d] usrcnt error\n",
409 rsnd_mod_name(mod), rsnd_mod_id(mod));
413 if (!rsnd_ssi_is_parent(mod, io))
416 rsnd_ssi_master_clk_stop(mod, io);
418 rsnd_mod_power_off(mod);
425 static int rsnd_ssi_hw_params(struct rsnd_mod *mod,
426 struct rsnd_dai_stream *io,
427 struct snd_pcm_substream *substream,
428 struct snd_pcm_hw_params *params)
430 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
431 int chan = params_channels(params);
435 * It will happen if SSI has parent/child connection.
437 if (ssi->usrcnt > 1) {
439 * it is error if child <-> parent SSI uses
440 * different channels.
442 if (ssi->chan != chan)
451 static int rsnd_ssi_start(struct rsnd_mod *mod,
452 struct rsnd_dai_stream *io,
453 struct rsnd_priv *priv)
455 if (!rsnd_ssi_is_run_mods(mod, io))
459 * EN will be set via SSIU :: SSI_CONTROL
460 * if Multi channel mode
462 if (rsnd_ssi_multi_slaves_runtime(io))
465 rsnd_mod_bset(mod, SSICR, EN, EN);
470 static int rsnd_ssi_stop(struct rsnd_mod *mod,
471 struct rsnd_dai_stream *io,
472 struct rsnd_priv *priv)
474 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
477 if (!rsnd_ssi_is_run_mods(mod, io))
481 * don't stop if not last user
491 * and, wait all data was sent
496 rsnd_mod_write(mod, SSICR, cr | EN);
497 rsnd_ssi_status_check(mod, DIRQ);
501 * and, wait idle state
503 rsnd_mod_write(mod, SSICR, cr); /* disabled all */
504 rsnd_ssi_status_check(mod, IIRQ);
509 static int rsnd_ssi_irq(struct rsnd_mod *mod,
510 struct rsnd_dai_stream *io,
511 struct rsnd_priv *priv,
516 if (rsnd_is_gen1(priv))
519 if (rsnd_ssi_is_parent(mod, io))
522 if (!rsnd_ssi_is_run_mods(mod, io))
526 val = rsnd_ssi_is_dma_mode(mod) ? 0x0e000000 : 0x0f000000;
528 rsnd_mod_write(mod, SSI_INT_ENABLE, val);
533 static void __rsnd_ssi_interrupt(struct rsnd_mod *mod,
534 struct rsnd_dai_stream *io)
536 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
537 int is_dma = rsnd_ssi_is_dma_mode(mod);
539 bool elapsed = false;
542 spin_lock(&priv->lock);
544 /* ignore all cases if not working */
545 if (!rsnd_io_is_working(io))
546 goto rsnd_ssi_interrupt_out;
548 status = rsnd_ssi_status_get(mod);
551 if (!is_dma && (status & DIRQ)) {
552 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
553 u32 *buf = (u32 *)(runtime->dma_area +
554 rsnd_dai_pointer_offset(io, 0));
557 switch (runtime->sample_bits) {
564 * 8/16/32 data can be assesse to TDR/RDR register
565 * directly as 32bit data
566 * see rsnd_ssi_init()
568 if (rsnd_io_is_play(io))
569 rsnd_mod_write(mod, SSITDR, (*buf) << shift);
571 *buf = (rsnd_mod_read(mod, SSIRDR) >> shift);
573 elapsed = rsnd_dai_pointer_update(io, sizeof(*buf));
577 if (is_dma && (status & (UIRQ | OIRQ)))
580 rsnd_ssi_status_clear(mod);
581 rsnd_ssi_interrupt_out:
582 spin_unlock(&priv->lock);
585 rsnd_dai_period_elapsed(io);
588 snd_pcm_stop_xrun(io->substream);
592 static irqreturn_t rsnd_ssi_interrupt(int irq, void *data)
594 struct rsnd_mod *mod = data;
596 rsnd_mod_interrupt(mod, __rsnd_ssi_interrupt);
604 static void rsnd_ssi_parent_attach(struct rsnd_mod *mod,
605 struct rsnd_dai_stream *io)
607 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
608 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
610 if (!__rsnd_ssi_is_pin_sharing(mod))
613 if (!rsnd_rdai_is_clk_master(rdai))
616 switch (rsnd_mod_id(mod)) {
619 rsnd_dai_connect(rsnd_ssi_mod_get(priv, 0), io, RSND_MOD_SSIP);
622 rsnd_dai_connect(rsnd_ssi_mod_get(priv, 3), io, RSND_MOD_SSIP);
625 rsnd_dai_connect(rsnd_ssi_mod_get(priv, 7), io, RSND_MOD_SSIP);
630 static int rsnd_ssi_pcm_new(struct rsnd_mod *mod,
631 struct rsnd_dai_stream *io,
632 struct snd_soc_pcm_runtime *rtd)
635 * rsnd_rdai_is_clk_master() will be enabled after set_fmt,
636 * and, pcm_new will be called after it.
637 * This function reuse pcm_new at this point.
639 rsnd_ssi_parent_attach(mod, io);
644 static int rsnd_ssi_common_probe(struct rsnd_mod *mod,
645 struct rsnd_dai_stream *io,
646 struct rsnd_priv *priv)
648 struct device *dev = rsnd_priv_to_dev(priv);
649 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
653 * SSIP/SSIU/IRQ are not needed on
656 if (rsnd_ssi_is_multi_slave(mod, io))
660 * It can't judge ssi parent at this point
661 * see rsnd_ssi_pcm_new()
664 ret = rsnd_ssiu_attach(io, mod);
668 ret = devm_request_irq(dev, ssi->irq,
676 static struct rsnd_mod_ops rsnd_ssi_pio_ops = {
678 .probe = rsnd_ssi_common_probe,
679 .init = rsnd_ssi_init,
680 .quit = rsnd_ssi_quit,
681 .start = rsnd_ssi_start,
682 .stop = rsnd_ssi_stop,
684 .pcm_new = rsnd_ssi_pcm_new,
685 .hw_params = rsnd_ssi_hw_params,
688 static int rsnd_ssi_dma_probe(struct rsnd_mod *mod,
689 struct rsnd_dai_stream *io,
690 struct rsnd_priv *priv)
692 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
693 int dma_id = 0; /* not needed */
697 * SSIP/SSIU/IRQ/DMA are not needed on
700 if (rsnd_ssi_is_multi_slave(mod, io))
703 ret = rsnd_ssi_common_probe(mod, io, priv);
707 /* SSI probe might be called many times in MUX multi path */
708 ret = rsnd_dma_attach(io, mod, &ssi->dma, dma_id);
713 static int rsnd_ssi_dma_remove(struct rsnd_mod *mod,
714 struct rsnd_dai_stream *io,
715 struct rsnd_priv *priv)
717 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
718 struct rsnd_mod *pure_ssi_mod = rsnd_io_to_mod_ssi(io);
719 struct device *dev = rsnd_priv_to_dev(priv);
722 /* Do nothing if non SSI (= SSI parent, multi SSI) mod */
723 if (pure_ssi_mod != mod)
726 /* PIO will request IRQ again */
727 devm_free_irq(dev, irq, mod);
732 static int rsnd_ssi_fallback(struct rsnd_mod *mod,
733 struct rsnd_dai_stream *io,
734 struct rsnd_priv *priv)
736 struct device *dev = rsnd_priv_to_dev(priv);
741 * SSI .probe might be called again.
743 * rsnd_rdai_continuance_probe()
745 mod->ops = &rsnd_ssi_pio_ops;
747 dev_info(dev, "%s[%d] fallback to PIO mode\n",
748 rsnd_mod_name(mod), rsnd_mod_id(mod));
753 static struct dma_chan *rsnd_ssi_dma_req(struct rsnd_dai_stream *io,
754 struct rsnd_mod *mod)
756 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
757 int is_play = rsnd_io_is_play(io);
760 if (rsnd_ssi_use_busif(io))
761 name = is_play ? "rxu" : "txu";
763 name = is_play ? "rx" : "tx";
765 return rsnd_dma_request_channel(rsnd_ssi_of_node(priv),
769 static struct rsnd_mod_ops rsnd_ssi_dma_ops = {
771 .dma_req = rsnd_ssi_dma_req,
772 .probe = rsnd_ssi_dma_probe,
773 .remove = rsnd_ssi_dma_remove,
774 .init = rsnd_ssi_init,
775 .quit = rsnd_ssi_quit,
776 .start = rsnd_ssi_start,
777 .stop = rsnd_ssi_stop,
779 .pcm_new = rsnd_ssi_pcm_new,
780 .fallback = rsnd_ssi_fallback,
781 .hw_params = rsnd_ssi_hw_params,
784 int rsnd_ssi_is_dma_mode(struct rsnd_mod *mod)
786 return mod->ops == &rsnd_ssi_dma_ops;
793 static struct rsnd_mod_ops rsnd_ssi_non_ops = {
800 static void rsnd_ssi_connect(struct rsnd_mod *mod,
801 struct rsnd_dai_stream *io)
803 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
804 enum rsnd_mod_type types[] = {
810 enum rsnd_mod_type type;
813 /* try SSI -> SSIM1 -> SSIM2 -> SSIM3 */
814 for (i = 0; i < ARRAY_SIZE(types); i++) {
816 if (!rsnd_io_to_mod(io, type)) {
817 rsnd_dai_connect(mod, io, type);
818 rsnd_set_slot(rdai, 2 * (i + 1), (i + 1));
824 void rsnd_parse_connect_ssi(struct rsnd_dai *rdai,
825 struct device_node *playback,
826 struct device_node *capture)
828 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
829 struct device_node *node;
830 struct device_node *np;
831 struct rsnd_mod *mod;
834 node = rsnd_ssi_of_node(priv);
839 for_each_child_of_node(node, np) {
840 mod = rsnd_ssi_mod_get(priv, i);
842 rsnd_ssi_connect(mod, &rdai->playback);
844 rsnd_ssi_connect(mod, &rdai->capture);
851 struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id)
853 if (WARN_ON(id < 0 || id >= rsnd_ssi_nr(priv)))
856 return rsnd_mod_get(rsnd_ssi_get(priv, id));
859 int __rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod)
861 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
863 return !!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_CLK_PIN_SHARE);
866 static u32 *rsnd_ssi_get_status(struct rsnd_dai_stream *io,
867 struct rsnd_mod *mod,
868 enum rsnd_mod_type type)
871 * SSIP (= SSI parent) needs to be special, otherwise,
872 * 2nd SSI might doesn't start. see also rsnd_mod_call()
874 * We can't include parent SSI status on SSI, because we don't know
875 * how many SSI requests parent SSI. Thus, it is localed on "io" now.
878 * Capture : SSI1 (needs SSI0)
880 * 1) start Capture -> SSI0/SSI1 are started.
881 * 2) start Playback -> SSI0 doesn't work, because it is already
882 * marked as "started" on 1)
884 * OTOH, using each mod's status is good for MUX case.
885 * It doesn't need to start in 2nd start
887 * IO-0: SRC0 -> CTU1 -+-> MUX -> DVC -> SSIU -> SSI0
889 * IO-1: SRC1 -> CTU2 -+
891 * 1) start IO-0 -> start SSI0
892 * 2) start IO-1 -> SSI0 doesn't need to start, because it is
893 * already started on 1)
895 if (type == RSND_MOD_SSIP)
896 return &io->parent_ssi_status;
898 return rsnd_mod_get_status(io, mod, type);
901 int rsnd_ssi_probe(struct rsnd_priv *priv)
903 struct device_node *node;
904 struct device_node *np;
905 struct device *dev = rsnd_priv_to_dev(priv);
906 struct rsnd_mod_ops *ops;
908 struct rsnd_ssi *ssi;
909 char name[RSND_SSI_NAME_SIZE];
912 node = rsnd_ssi_of_node(priv);
916 nr = of_get_child_count(node);
919 goto rsnd_ssi_probe_done;
922 ssi = devm_kzalloc(dev, sizeof(*ssi) * nr, GFP_KERNEL);
925 goto rsnd_ssi_probe_done;
932 for_each_child_of_node(node, np) {
933 ssi = rsnd_ssi_get(priv, i);
935 snprintf(name, RSND_SSI_NAME_SIZE, "%s.%d",
938 clk = devm_clk_get(dev, name);
941 goto rsnd_ssi_probe_done;
944 if (of_get_property(np, "shared-pin", NULL))
945 ssi->flags |= RSND_SSI_CLK_PIN_SHARE;
947 if (of_get_property(np, "no-busif", NULL))
948 ssi->flags |= RSND_SSI_NO_BUSIF;
950 ssi->irq = irq_of_parse_and_map(np, 0);
953 goto rsnd_ssi_probe_done;
956 ops = &rsnd_ssi_non_ops;
957 if (of_property_read_bool(np, "pio-transfer"))
958 ops = &rsnd_ssi_pio_ops;
960 ops = &rsnd_ssi_dma_ops;
962 ret = rsnd_mod_init(priv, rsnd_mod_get(ssi), ops, clk,
963 rsnd_ssi_get_status, RSND_MOD_SSI, i);
965 goto rsnd_ssi_probe_done;
978 void rsnd_ssi_remove(struct rsnd_priv *priv)
980 struct rsnd_ssi *ssi;
983 for_each_rsnd_ssi(ssi, priv, i) {
984 rsnd_mod_quit(rsnd_mod_get(ssi));