1 // SPDX-License-Identifier: GPL-2.0
3 // Renesas R-Car SSIU/SSI support
5 // Copyright (C) 2013 Renesas Solutions Corp.
6 // Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
9 // Kuninori Morimoto <morimoto.kuninori@renesas.com>
12 * you can enable below define if you don't need
13 * SSI interrupt status debug message when debugging
14 * see rsnd_dbg_irq_status()
16 * #define RSND_DEBUG_NO_IRQ_STATUS 1
19 #include <sound/simple_card_utils.h>
20 #include <linux/delay.h>
22 #define RSND_SSI_NAME_SIZE 16
27 #define FORCE (1 << 31) /* Fixed */
28 #define DMEN (1 << 28) /* DMA Enable */
29 #define UIEN (1 << 27) /* Underflow Interrupt Enable */
30 #define OIEN (1 << 26) /* Overflow Interrupt Enable */
31 #define IIEN (1 << 25) /* Idle Mode Interrupt Enable */
32 #define DIEN (1 << 24) /* Data Interrupt Enable */
33 #define CHNL_4 (1 << 22) /* Channels */
34 #define CHNL_6 (2 << 22) /* Channels */
35 #define CHNL_8 (3 << 22) /* Channels */
36 #define DWL_MASK (7 << 19) /* Data Word Length mask */
37 #define DWL_8 (0 << 19) /* Data Word Length */
38 #define DWL_16 (1 << 19) /* Data Word Length */
39 #define DWL_18 (2 << 19) /* Data Word Length */
40 #define DWL_20 (3 << 19) /* Data Word Length */
41 #define DWL_22 (4 << 19) /* Data Word Length */
42 #define DWL_24 (5 << 19) /* Data Word Length */
43 #define DWL_32 (6 << 19) /* Data Word Length */
45 #define SWL_32 (3 << 16) /* R/W System Word Length */
46 #define SCKD (1 << 15) /* Serial Bit Clock Direction */
47 #define SWSD (1 << 14) /* Serial WS Direction */
48 #define SCKP (1 << 13) /* Serial Bit Clock Polarity */
49 #define SWSP (1 << 12) /* Serial WS Polarity */
50 #define SDTA (1 << 10) /* Serial Data Alignment */
51 #define PDTA (1 << 9) /* Parallel Data Alignment */
52 #define DEL (1 << 8) /* Serial Data Delay */
53 #define CKDV(v) (v << 4) /* Serial Clock Division Ratio */
54 #define TRMD (1 << 1) /* Transmit/Receive Mode Select */
55 #define EN (1 << 0) /* SSI Module Enable */
60 #define UIRQ (1 << 27) /* Underflow Error Interrupt Status */
61 #define OIRQ (1 << 26) /* Overflow Error Interrupt Status */
62 #define IIRQ (1 << 25) /* Idle Mode Interrupt Status */
63 #define DIRQ (1 << 24) /* Data Interrupt Status Flag */
68 #define CONT (1 << 8) /* WS Continue Function */
69 #define WS_MODE (1 << 0) /* WS Mode */
71 #define SSI_NAME "ssi"
95 #define RSND_SSI_CLK_PIN_SHARE (1 << 0)
96 #define RSND_SSI_NO_BUSIF (1 << 1) /* SSI+DMA without BUSIF */
97 #define RSND_SSI_HDMI0 (1 << 2) /* for HDMI0 */
98 #define RSND_SSI_HDMI1 (1 << 3) /* for HDMI1 */
99 #define RSND_SSI_PROBED (1 << 4)
101 #define for_each_rsnd_ssi(pos, priv, i) \
103 (i < rsnd_ssi_nr(priv)) && \
104 ((pos) = ((struct rsnd_ssi *)(priv)->ssi + i)); \
107 #define rsnd_ssi_get(priv, id) ((struct rsnd_ssi *)(priv->ssi) + id)
108 #define rsnd_ssi_nr(priv) ((priv)->ssi_nr)
109 #define rsnd_mod_to_ssi(_mod) container_of((_mod), struct rsnd_ssi, mod)
110 #define rsnd_ssi_is_parent(ssi, io) ((ssi) == rsnd_io_to_mod_ssip(io))
111 #define rsnd_ssi_is_multi_slave(mod, io) \
112 (rsnd_ssi_multi_slaves(io) & (1 << rsnd_mod_id(mod)))
113 #define rsnd_ssi_is_run_mods(mod, io) \
114 (rsnd_ssi_run_mods(io) & (1 << rsnd_mod_id(mod)))
115 #define rsnd_ssi_can_output_clk(mod) (!__rsnd_ssi_is_pin_sharing(mod))
117 int rsnd_ssi_hdmi_port(struct rsnd_dai_stream *io)
119 struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io);
120 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
122 if (rsnd_flags_has(ssi, RSND_SSI_HDMI0))
123 return RSND_SSI_HDMI_PORT0;
125 if (rsnd_flags_has(ssi, RSND_SSI_HDMI1))
126 return RSND_SSI_HDMI_PORT1;
131 int rsnd_ssi_use_busif(struct rsnd_dai_stream *io)
133 struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io);
134 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
137 if (!rsnd_ssi_is_dma_mode(mod))
140 if (!(rsnd_flags_has(ssi, RSND_SSI_NO_BUSIF)))
142 if (rsnd_io_to_mod_src(io))
148 static void rsnd_ssi_status_clear(struct rsnd_mod *mod)
150 rsnd_mod_write(mod, SSISR, 0);
153 static u32 rsnd_ssi_status_get(struct rsnd_mod *mod)
155 return rsnd_mod_read(mod, SSISR);
158 static void rsnd_ssi_status_check(struct rsnd_mod *mod,
161 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
162 struct device *dev = rsnd_priv_to_dev(priv);
166 for (i = 0; i < 1024; i++) {
167 status = rsnd_ssi_status_get(mod);
174 dev_warn(dev, "%s[%d] status check failed\n",
175 rsnd_mod_name(mod), rsnd_mod_id(mod));
178 static u32 rsnd_ssi_multi_slaves(struct rsnd_dai_stream *io)
180 struct rsnd_mod *mod;
181 enum rsnd_mod_type types[] = {
189 for (i = 0; i < ARRAY_SIZE(types); i++) {
190 mod = rsnd_io_to_mod(io, types[i]);
194 mask |= 1 << rsnd_mod_id(mod);
200 static u32 rsnd_ssi_run_mods(struct rsnd_dai_stream *io)
202 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
203 struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io);
206 mods = rsnd_ssi_multi_slaves_runtime(io) |
207 1 << rsnd_mod_id(ssi_mod);
210 mods |= 1 << rsnd_mod_id(ssi_parent_mod);
215 u32 rsnd_ssi_multi_slaves_runtime(struct rsnd_dai_stream *io)
217 if (rsnd_runtime_is_ssi_multi(io))
218 return rsnd_ssi_multi_slaves(io);
223 unsigned int rsnd_ssi_clk_query(struct rsnd_priv *priv,
224 int param1, int param2, int *idx)
226 int ssi_clk_mul_table[] = {
227 1, 2, 4, 8, 16, 6, 12,
230 unsigned int main_rate;
232 for (j = 0; j < ARRAY_SIZE(ssi_clk_mul_table); j++) {
235 * It will set SSIWSR.CONT here, but SSICR.CKDV = 000
236 * with it is not allowed. (SSIWSR.WS_MODE with
237 * SSICR.CKDV = 000 is not allowed either).
238 * Skip it. See SSICR.CKDV
244 * this driver is assuming that
245 * system word is 32bit x chan
246 * see rsnd_ssi_init()
248 main_rate = 32 * param1 * param2 * ssi_clk_mul_table[j];
250 ret = rsnd_adg_clk_query(priv, main_rate);
263 static int rsnd_ssi_master_clk_start(struct rsnd_mod *mod,
264 struct rsnd_dai_stream *io)
266 struct rsnd_priv *priv = rsnd_io_to_priv(io);
267 struct device *dev = rsnd_priv_to_dev(priv);
268 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
269 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
270 int chan = rsnd_runtime_channel_for_ssi(io);
272 unsigned int main_rate;
273 unsigned int rate = rsnd_io_is_play(io) ?
274 rsnd_src_get_out_rate(priv, io) :
275 rsnd_src_get_in_rate(priv, io);
277 if (!rsnd_rdai_is_clk_master(rdai))
280 if (!rsnd_ssi_can_output_clk(mod))
283 if (rsnd_ssi_is_multi_slave(mod, io))
286 if (ssi->usrcnt > 1) {
287 if (ssi->rate != rate) {
288 dev_err(dev, "SSI parent/child should use same rate\n");
295 main_rate = rsnd_ssi_clk_query(priv, rate, chan, &idx);
297 dev_err(dev, "unsupported clock rate\n");
301 ret = rsnd_adg_ssi_clk_try_start(mod, main_rate);
306 * SSI clock will be output contiguously
308 * This means, rsnd_ssi_master_clk_start()
309 * and rsnd_ssi_register_setup() are necessary
312 * SSICR : FORCE, SCKD, SWSD
315 ssi->cr_clk = FORCE | SWL_32 | SCKD | SWSD | CKDV(idx);
319 dev_dbg(dev, "%s[%d] outputs %u Hz\n",
321 rsnd_mod_id(mod), rate);
326 static void rsnd_ssi_master_clk_stop(struct rsnd_mod *mod,
327 struct rsnd_dai_stream *io)
329 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
330 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
332 if (!rsnd_rdai_is_clk_master(rdai))
335 if (!rsnd_ssi_can_output_clk(mod))
344 rsnd_adg_ssi_clk_stop(mod);
347 static void rsnd_ssi_config_init(struct rsnd_mod *mod,
348 struct rsnd_dai_stream *io)
350 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
351 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
352 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
353 u32 cr_own = ssi->cr_own;
354 u32 cr_mode = ssi->cr_mode;
358 is_tdm = rsnd_runtime_is_ssi_tdm(io);
361 * always use 32bit system word.
362 * see also rsnd_ssi_master_clk_enable()
364 cr_own |= FORCE | SWL_32;
366 if (rdai->bit_clk_inv)
368 if (rdai->frm_clk_inv ^ is_tdm)
370 if (rdai->data_alignment)
376 * We shouldn't exchange SWSP after running.
377 * This means, parent needs to care it.
379 if (rsnd_ssi_is_parent(mod, io))
382 if (rsnd_io_is_play(io))
386 switch (snd_pcm_format_width(runtime->format)) {
395 if (rsnd_ssi_is_dma_mode(mod)) {
396 cr_mode = UIEN | OIEN | /* over/under run */
397 DMEN; /* DMA : enable DMA */
399 cr_mode = DIEN; /* PIO : enable Data interrupt */
405 * rsnd_ssiu_init_gen2()
413 ssi->cr_own = cr_own;
414 ssi->cr_mode = cr_mode;
418 static void rsnd_ssi_register_setup(struct rsnd_mod *mod)
420 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
422 rsnd_mod_write(mod, SSIWSR, ssi->wsr);
423 rsnd_mod_write(mod, SSICR, ssi->cr_own |
430 * SSI mod common functions
432 static int rsnd_ssi_init(struct rsnd_mod *mod,
433 struct rsnd_dai_stream *io,
434 struct rsnd_priv *priv)
436 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
439 if (!rsnd_ssi_is_run_mods(mod, io))
444 rsnd_mod_power_on(mod);
446 ret = rsnd_ssi_master_clk_start(mod, io);
450 rsnd_ssi_config_init(mod, io);
452 rsnd_ssi_register_setup(mod);
454 /* clear error status */
455 rsnd_ssi_status_clear(mod);
460 static int rsnd_ssi_quit(struct rsnd_mod *mod,
461 struct rsnd_dai_stream *io,
462 struct rsnd_priv *priv)
464 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
465 struct device *dev = rsnd_priv_to_dev(priv);
467 if (!rsnd_ssi_is_run_mods(mod, io))
471 dev_err(dev, "%s[%d] usrcnt error\n",
472 rsnd_mod_name(mod), rsnd_mod_id(mod));
476 rsnd_ssi_master_clk_stop(mod, io);
478 rsnd_mod_power_off(mod);
491 static int rsnd_ssi_hw_params(struct rsnd_mod *mod,
492 struct rsnd_dai_stream *io,
493 struct snd_pcm_substream *substream,
494 struct snd_pcm_hw_params *params)
496 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
497 int chan = params_channels(params);
500 * snd_pcm_ops::hw_params will be called *before*
501 * snd_soc_dai_ops::trigger. Thus, ssi->usrcnt is 0
507 * It will happen if SSI has parent/child connection.
508 * it is error if child <-> parent SSI uses
509 * different channels.
511 if (ssi->chan != chan)
520 static int rsnd_ssi_start(struct rsnd_mod *mod,
521 struct rsnd_dai_stream *io,
522 struct rsnd_priv *priv)
524 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
526 if (!rsnd_ssi_is_run_mods(mod, io))
530 * EN will be set via SSIU :: SSI_CONTROL
531 * if Multi channel mode
533 if (rsnd_ssi_multi_slaves_runtime(io))
537 * EN is for data output.
538 * SSI parent EN is not needed.
540 if (rsnd_ssi_is_parent(mod, io))
545 rsnd_mod_write(mod, SSICR, ssi->cr_own |
553 static int rsnd_ssi_stop(struct rsnd_mod *mod,
554 struct rsnd_dai_stream *io,
555 struct rsnd_priv *priv)
557 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
560 if (!rsnd_ssi_is_run_mods(mod, io))
563 if (rsnd_ssi_is_parent(mod, io))
571 * Playback: Wait all data was sent
572 * Capture: It might not receave data. Do nothing
574 if (rsnd_io_is_play(io)) {
575 rsnd_mod_write(mod, SSICR, cr | EN);
576 rsnd_ssi_status_check(mod, DIRQ);
581 * and, wait idle state
583 rsnd_mod_write(mod, SSICR, cr); /* disabled all */
584 rsnd_ssi_status_check(mod, IIRQ);
591 static int rsnd_ssi_irq(struct rsnd_mod *mod,
592 struct rsnd_dai_stream *io,
593 struct rsnd_priv *priv,
598 if (rsnd_is_gen1(priv))
601 if (rsnd_ssi_is_parent(mod, io))
604 if (!rsnd_ssi_is_run_mods(mod, io))
608 val = rsnd_ssi_is_dma_mode(mod) ? 0x0e000000 : 0x0f000000;
610 rsnd_mod_write(mod, SSI_INT_ENABLE, val);
615 static bool rsnd_ssi_pio_interrupt(struct rsnd_mod *mod,
616 struct rsnd_dai_stream *io);
617 static void __rsnd_ssi_interrupt(struct rsnd_mod *mod,
618 struct rsnd_dai_stream *io)
620 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
621 struct device *dev = rsnd_priv_to_dev(priv);
622 int is_dma = rsnd_ssi_is_dma_mode(mod);
624 bool elapsed = false;
627 spin_lock(&priv->lock);
629 /* ignore all cases if not working */
630 if (!rsnd_io_is_working(io))
631 goto rsnd_ssi_interrupt_out;
633 status = rsnd_ssi_status_get(mod);
636 if (!is_dma && (status & DIRQ))
637 elapsed = rsnd_ssi_pio_interrupt(mod, io);
640 if (is_dma && (status & (UIRQ | OIRQ))) {
641 rsnd_dbg_irq_status(dev, "%s[%d] err status : 0x%08x\n",
642 rsnd_mod_name(mod), rsnd_mod_id(mod), status);
647 rsnd_ssi_status_clear(mod);
648 rsnd_ssi_interrupt_out:
649 spin_unlock(&priv->lock);
652 rsnd_dai_period_elapsed(io);
655 snd_pcm_stop_xrun(io->substream);
659 static irqreturn_t rsnd_ssi_interrupt(int irq, void *data)
661 struct rsnd_mod *mod = data;
663 rsnd_mod_interrupt(mod, __rsnd_ssi_interrupt);
671 static void rsnd_ssi_parent_attach(struct rsnd_mod *mod,
672 struct rsnd_dai_stream *io)
674 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
675 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
677 if (!__rsnd_ssi_is_pin_sharing(mod))
680 if (!rsnd_rdai_is_clk_master(rdai))
683 switch (rsnd_mod_id(mod)) {
686 rsnd_dai_connect(rsnd_ssi_mod_get(priv, 0), io, RSND_MOD_SSIP);
689 rsnd_dai_connect(rsnd_ssi_mod_get(priv, 3), io, RSND_MOD_SSIP);
692 rsnd_dai_connect(rsnd_ssi_mod_get(priv, 7), io, RSND_MOD_SSIP);
697 static int rsnd_ssi_pcm_new(struct rsnd_mod *mod,
698 struct rsnd_dai_stream *io,
699 struct snd_soc_pcm_runtime *rtd)
702 * rsnd_rdai_is_clk_master() will be enabled after set_fmt,
703 * and, pcm_new will be called after it.
704 * This function reuse pcm_new at this point.
706 rsnd_ssi_parent_attach(mod, io);
711 static int rsnd_ssi_common_probe(struct rsnd_mod *mod,
712 struct rsnd_dai_stream *io,
713 struct rsnd_priv *priv)
715 struct device *dev = rsnd_priv_to_dev(priv);
716 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
720 * SSIP/SSIU/IRQ are not needed on
723 if (rsnd_ssi_is_multi_slave(mod, io))
727 * It can't judge ssi parent at this point
728 * see rsnd_ssi_pcm_new()
731 ret = rsnd_ssiu_attach(io, mod);
736 * SSI might be called again as PIO fallback
737 * It is easy to manual handling for IRQ request/free
739 * OTOH, this function might be called many times if platform is
740 * using MIX. It needs xxx_attach() many times on xxx_probe().
741 * Because of it, we can't control .probe/.remove calling count by
743 * But it don't need to call request_irq() many times.
744 * Let's control it by RSND_SSI_PROBED flag.
746 if (!rsnd_flags_has(ssi, RSND_SSI_PROBED)) {
747 ret = request_irq(ssi->irq,
752 rsnd_flags_set(ssi, RSND_SSI_PROBED);
758 static int rsnd_ssi_common_remove(struct rsnd_mod *mod,
759 struct rsnd_dai_stream *io,
760 struct rsnd_priv *priv)
762 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
763 struct rsnd_mod *pure_ssi_mod = rsnd_io_to_mod_ssi(io);
765 /* Do nothing if non SSI (= SSI parent, multi SSI) mod */
766 if (pure_ssi_mod != mod)
769 /* PIO will request IRQ again */
770 if (rsnd_flags_has(ssi, RSND_SSI_PROBED)) {
771 free_irq(ssi->irq, mod);
773 rsnd_flags_del(ssi, RSND_SSI_PROBED);
782 static bool rsnd_ssi_pio_interrupt(struct rsnd_mod *mod,
783 struct rsnd_dai_stream *io)
785 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
786 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
787 u32 *buf = (u32 *)(runtime->dma_area + ssi->byte_pos);
790 bool elapsed = false;
792 if (snd_pcm_format_width(runtime->format) == 24)
796 * 8/16/32 data can be assesse to TDR/RDR register
797 * directly as 32bit data
798 * see rsnd_ssi_init()
800 if (rsnd_io_is_play(io))
801 rsnd_mod_write(mod, SSITDR, (*buf) << shift);
803 *buf = (rsnd_mod_read(mod, SSIRDR) >> shift);
805 byte_pos = ssi->byte_pos + sizeof(*buf);
807 if (byte_pos >= ssi->next_period_byte) {
808 int period_pos = byte_pos / ssi->byte_per_period;
810 if (period_pos >= runtime->periods) {
815 ssi->next_period_byte = (period_pos + 1) * ssi->byte_per_period;
820 WRITE_ONCE(ssi->byte_pos, byte_pos);
825 static int rsnd_ssi_pio_init(struct rsnd_mod *mod,
826 struct rsnd_dai_stream *io,
827 struct rsnd_priv *priv)
829 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
830 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
832 if (!rsnd_ssi_is_parent(mod, io)) {
834 ssi->byte_per_period = runtime->period_size *
836 samples_to_bytes(runtime, 1);
837 ssi->next_period_byte = ssi->byte_per_period;
840 return rsnd_ssi_init(mod, io, priv);
843 static int rsnd_ssi_pio_pointer(struct rsnd_mod *mod,
844 struct rsnd_dai_stream *io,
845 snd_pcm_uframes_t *pointer)
847 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
848 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
850 *pointer = bytes_to_frames(runtime, READ_ONCE(ssi->byte_pos));
855 static struct rsnd_mod_ops rsnd_ssi_pio_ops = {
857 .probe = rsnd_ssi_common_probe,
858 .remove = rsnd_ssi_common_remove,
859 .init = rsnd_ssi_pio_init,
860 .quit = rsnd_ssi_quit,
861 .start = rsnd_ssi_start,
862 .stop = rsnd_ssi_stop,
864 .pointer = rsnd_ssi_pio_pointer,
865 .pcm_new = rsnd_ssi_pcm_new,
866 .hw_params = rsnd_ssi_hw_params,
869 static int rsnd_ssi_dma_probe(struct rsnd_mod *mod,
870 struct rsnd_dai_stream *io,
871 struct rsnd_priv *priv)
873 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
877 * SSIP/SSIU/IRQ/DMA are not needed on
880 if (rsnd_ssi_is_multi_slave(mod, io))
883 ret = rsnd_ssi_common_probe(mod, io, priv);
887 /* SSI probe might be called many times in MUX multi path */
888 ret = rsnd_dma_attach(io, mod, &ssi->dma);
893 static int rsnd_ssi_fallback(struct rsnd_mod *mod,
894 struct rsnd_dai_stream *io,
895 struct rsnd_priv *priv)
897 struct device *dev = rsnd_priv_to_dev(priv);
902 * SSI .probe might be called again.
904 * rsnd_rdai_continuance_probe()
906 mod->ops = &rsnd_ssi_pio_ops;
908 dev_info(dev, "%s[%d] fallback to PIO mode\n",
909 rsnd_mod_name(mod), rsnd_mod_id(mod));
914 static struct dma_chan *rsnd_ssi_dma_req(struct rsnd_dai_stream *io,
915 struct rsnd_mod *mod)
917 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
918 int is_play = rsnd_io_is_play(io);
921 if (rsnd_ssi_use_busif(io))
922 name = is_play ? "rxu" : "txu";
924 name = is_play ? "rx" : "tx";
926 return rsnd_dma_request_channel(rsnd_ssi_of_node(priv),
930 static struct rsnd_mod_ops rsnd_ssi_dma_ops = {
932 .dma_req = rsnd_ssi_dma_req,
933 .probe = rsnd_ssi_dma_probe,
934 .remove = rsnd_ssi_common_remove,
935 .init = rsnd_ssi_init,
936 .quit = rsnd_ssi_quit,
937 .start = rsnd_ssi_start,
938 .stop = rsnd_ssi_stop,
940 .pcm_new = rsnd_ssi_pcm_new,
941 .fallback = rsnd_ssi_fallback,
942 .hw_params = rsnd_ssi_hw_params,
945 int rsnd_ssi_is_dma_mode(struct rsnd_mod *mod)
947 return mod->ops == &rsnd_ssi_dma_ops;
954 static void rsnd_ssi_connect(struct rsnd_mod *mod,
955 struct rsnd_dai_stream *io)
957 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
958 enum rsnd_mod_type types[] = {
964 enum rsnd_mod_type type;
967 /* try SSI -> SSIM1 -> SSIM2 -> SSIM3 */
968 for (i = 0; i < ARRAY_SIZE(types); i++) {
970 if (!rsnd_io_to_mod(io, type)) {
971 rsnd_dai_connect(mod, io, type);
972 rsnd_rdai_channels_set(rdai, (i + 1) * 2);
973 rsnd_rdai_ssi_lane_set(rdai, (i + 1));
979 void rsnd_parse_connect_ssi(struct rsnd_dai *rdai,
980 struct device_node *playback,
981 struct device_node *capture)
983 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
984 struct device_node *node;
985 struct device_node *np;
986 struct rsnd_mod *mod;
989 node = rsnd_ssi_of_node(priv);
994 for_each_child_of_node(node, np) {
995 mod = rsnd_ssi_mod_get(priv, i);
997 rsnd_ssi_connect(mod, &rdai->playback);
999 rsnd_ssi_connect(mod, &rdai->capture);
1006 static void __rsnd_ssi_parse_hdmi_connection(struct rsnd_priv *priv,
1007 struct rsnd_dai_stream *io,
1008 struct device_node *remote_ep)
1010 struct device *dev = rsnd_priv_to_dev(priv);
1011 struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io);
1012 struct rsnd_ssi *ssi;
1013 struct device_node *remote_node = of_graph_get_port_parent(remote_ep);
1015 /* support Gen3 only */
1016 if (!rsnd_is_gen3(priv))
1022 ssi = rsnd_mod_to_ssi(mod);
1025 if (strstr(remote_node->full_name, "hdmi@fead0000")) {
1026 rsnd_flags_set(ssi, RSND_SSI_HDMI0);
1027 dev_dbg(dev, "%s[%d] connected to HDMI0\n",
1028 rsnd_mod_name(mod), rsnd_mod_id(mod));
1032 if (strstr(remote_node->full_name, "hdmi@feae0000")) {
1033 rsnd_flags_set(ssi, RSND_SSI_HDMI1);
1034 dev_dbg(dev, "%s[%d] connected to HDMI1\n",
1035 rsnd_mod_name(mod), rsnd_mod_id(mod));
1039 void rsnd_ssi_parse_hdmi_connection(struct rsnd_priv *priv,
1040 struct device_node *endpoint,
1043 struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
1044 struct device_node *remote_ep;
1046 remote_ep = of_graph_get_remote_endpoint(endpoint);
1050 __rsnd_ssi_parse_hdmi_connection(priv, &rdai->playback, remote_ep);
1051 __rsnd_ssi_parse_hdmi_connection(priv, &rdai->capture, remote_ep);
1054 struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id)
1056 if (WARN_ON(id < 0 || id >= rsnd_ssi_nr(priv)))
1059 return rsnd_mod_get(rsnd_ssi_get(priv, id));
1062 int __rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod)
1067 return !!(rsnd_flags_has(rsnd_mod_to_ssi(mod), RSND_SSI_CLK_PIN_SHARE));
1070 static u32 *rsnd_ssi_get_status(struct rsnd_dai_stream *io,
1071 struct rsnd_mod *mod,
1072 enum rsnd_mod_type type)
1075 * SSIP (= SSI parent) needs to be special, otherwise,
1076 * 2nd SSI might doesn't start. see also rsnd_mod_call()
1078 * We can't include parent SSI status on SSI, because we don't know
1079 * how many SSI requests parent SSI. Thus, it is localed on "io" now.
1082 * Capture : SSI1 (needs SSI0)
1084 * 1) start Capture -> SSI0/SSI1 are started.
1085 * 2) start Playback -> SSI0 doesn't work, because it is already
1086 * marked as "started" on 1)
1088 * OTOH, using each mod's status is good for MUX case.
1089 * It doesn't need to start in 2nd start
1091 * IO-0: SRC0 -> CTU1 -+-> MUX -> DVC -> SSIU -> SSI0
1093 * IO-1: SRC1 -> CTU2 -+
1095 * 1) start IO-0 -> start SSI0
1096 * 2) start IO-1 -> SSI0 doesn't need to start, because it is
1097 * already started on 1)
1099 if (type == RSND_MOD_SSIP)
1100 return &io->parent_ssi_status;
1102 return rsnd_mod_get_status(io, mod, type);
1105 int rsnd_ssi_probe(struct rsnd_priv *priv)
1107 struct device_node *node;
1108 struct device_node *np;
1109 struct device *dev = rsnd_priv_to_dev(priv);
1110 struct rsnd_mod_ops *ops;
1112 struct rsnd_ssi *ssi;
1113 char name[RSND_SSI_NAME_SIZE];
1116 node = rsnd_ssi_of_node(priv);
1120 nr = of_get_child_count(node);
1123 goto rsnd_ssi_probe_done;
1126 ssi = devm_kcalloc(dev, nr, sizeof(*ssi), GFP_KERNEL);
1129 goto rsnd_ssi_probe_done;
1136 for_each_child_of_node(node, np) {
1137 if (!of_device_is_available(np))
1140 ssi = rsnd_ssi_get(priv, i);
1142 snprintf(name, RSND_SSI_NAME_SIZE, "%s.%d",
1145 clk = devm_clk_get(dev, name);
1149 goto rsnd_ssi_probe_done;
1152 if (of_get_property(np, "shared-pin", NULL))
1153 rsnd_flags_set(ssi, RSND_SSI_CLK_PIN_SHARE);
1155 if (of_get_property(np, "no-busif", NULL))
1156 rsnd_flags_set(ssi, RSND_SSI_NO_BUSIF);
1158 ssi->irq = irq_of_parse_and_map(np, 0);
1162 goto rsnd_ssi_probe_done;
1165 if (of_property_read_bool(np, "pio-transfer"))
1166 ops = &rsnd_ssi_pio_ops;
1168 ops = &rsnd_ssi_dma_ops;
1170 ret = rsnd_mod_init(priv, rsnd_mod_get(ssi), ops, clk,
1171 rsnd_ssi_get_status, RSND_MOD_SSI, i);
1174 goto rsnd_ssi_probe_done;
1182 rsnd_ssi_probe_done:
1188 void rsnd_ssi_remove(struct rsnd_priv *priv)
1190 struct rsnd_ssi *ssi;
1193 for_each_rsnd_ssi(ssi, priv, i) {
1194 rsnd_mod_quit(rsnd_mod_get(ssi));