Lines Matching +full:ssi +full:- +full:dma +full:- +full:channel
1 // SPDX-License-Identifier: GPL-2.0
3 // Renesas R-Car SSIU/SSI support
13 * SSI interrupt status debug message when debugging
30 #define DMEN (1u << 28) /* DMA Enable */
63 #define EN (1 << 0) /* SSI Module Enable */
79 #define SSI_NAME "ssi"
103 #define RSND_SSI_NO_BUSIF (1 << 1) /* SSI+DMA without BUSIF */
109 ((pos) = ((struct rsnd_ssi *)(priv)->ssi + i)); \
112 #define rsnd_ssi_get(priv, id) ((struct rsnd_ssi *)(priv->ssi) + id)
113 #define rsnd_ssi_nr(priv) ((priv)->ssi_nr)
115 #define rsnd_ssi_is_parent(ssi, io) ((ssi) == rsnd_io_to_mod_ssip(io)) argument
125 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_use_busif() local
131 if (!(rsnd_flags_has(ssi, RSND_SSI_NO_BUSIF))) in rsnd_ssi_use_busif()
272 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_master_clk_start() local
294 if (ssi->usrcnt > 0) { in rsnd_ssi_master_clk_start()
295 if (ssi->rate != rate) { in rsnd_ssi_master_clk_start()
296 dev_err(dev, "SSI parent/child should use same rate\n"); in rsnd_ssi_master_clk_start()
297 return -EINVAL; in rsnd_ssi_master_clk_start()
300 if (ssi->chan != chan) { in rsnd_ssi_master_clk_start()
301 dev_err(dev, "SSI parent/child should use same chan\n"); in rsnd_ssi_master_clk_start()
302 return -EINVAL; in rsnd_ssi_master_clk_start()
308 ret = -EIO; in rsnd_ssi_master_clk_start()
318 * SSI clock will be output contiguously in rsnd_ssi_master_clk_start()
322 * for SSI parent in rsnd_ssi_master_clk_start()
327 ssi->cr_clk = FORCE | rsnd_rdai_width_to_swl(rdai) | in rsnd_ssi_master_clk_start()
329 ssi->wsr = CONT; in rsnd_ssi_master_clk_start()
330 ssi->rate = rate; in rsnd_ssi_master_clk_start()
331 ssi->chan = chan; in rsnd_ssi_master_clk_start()
348 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_master_clk_stop() local
356 if (ssi->usrcnt > 1) in rsnd_ssi_master_clk_stop()
359 ssi->cr_clk = 0; in rsnd_ssi_master_clk_stop()
360 ssi->rate = 0; in rsnd_ssi_master_clk_stop()
361 ssi->chan = 0; in rsnd_ssi_master_clk_stop()
373 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_config_init() local
374 u32 cr_own = ssi->cr_own; in rsnd_ssi_config_init()
375 u32 cr_mode = ssi->cr_mode; in rsnd_ssi_config_init()
376 u32 wsr = ssi->wsr; in rsnd_ssi_config_init()
390 if (rdai->bit_clk_inv) in rsnd_ssi_config_init()
392 if (rdai->frm_clk_inv && !is_tdm) in rsnd_ssi_config_init()
394 if (rdai->data_alignment) in rsnd_ssi_config_init()
396 if (rdai->sys_delay) in rsnd_ssi_config_init()
420 width = snd_pcm_format_width(runtime->format); in rsnd_ssi_config_init()
423 * The SWL and DWL bits in SSICR should be fixed at 32-bit in rsnd_ssi_config_init()
448 DMEN; /* DMA : enable DMA */ in rsnd_ssi_config_init()
454 ssi->cr_own = cr_own; in rsnd_ssi_config_init()
455 ssi->cr_mode = cr_mode; in rsnd_ssi_config_init()
456 ssi->wsr = wsr; in rsnd_ssi_config_init()
461 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_register_setup() local
463 rsnd_mod_write(mod, SSIWSR, ssi->wsr); in rsnd_ssi_register_setup()
464 rsnd_mod_write(mod, SSICR, ssi->cr_own | in rsnd_ssi_register_setup()
465 ssi->cr_clk | in rsnd_ssi_register_setup()
466 ssi->cr_mode | in rsnd_ssi_register_setup()
467 ssi->cr_en); in rsnd_ssi_register_setup()
471 * SSI mod common functions
477 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_init() local
487 ssi->usrcnt++; in rsnd_ssi_init()
507 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_quit() local
513 if (!ssi->usrcnt) { in rsnd_ssi_quit()
515 return -EIO; in rsnd_ssi_quit()
522 ssi->usrcnt--; in rsnd_ssi_quit()
524 if (!ssi->usrcnt) { in rsnd_ssi_quit()
525 ssi->cr_own = 0; in rsnd_ssi_quit()
526 ssi->cr_mode = 0; in rsnd_ssi_quit()
527 ssi->wsr = 0; in rsnd_ssi_quit()
541 if (fmt_width > rdai->chan_width) { in rsnd_ssi_hw_params()
545 dev_err(dev, "invalid combination of slot-width and format-data-width\n"); in rsnd_ssi_hw_params()
546 return -EINVAL; in rsnd_ssi_hw_params()
556 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_start() local
563 * if Multi channel mode in rsnd_ssi_start()
570 * SSI parent EN is not needed. in rsnd_ssi_start()
575 ssi->cr_en = EN; in rsnd_ssi_start()
577 rsnd_mod_write(mod, SSICR, ssi->cr_own | in rsnd_ssi_start()
578 ssi->cr_clk | in rsnd_ssi_start()
579 ssi->cr_mode | in rsnd_ssi_start()
580 ssi->cr_en); in rsnd_ssi_start()
589 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_stop() local
598 cr = ssi->cr_own | in rsnd_ssi_stop()
599 ssi->cr_clk; in rsnd_ssi_stop()
607 rsnd_mod_write(mod, SSICR, cr | ssi->cr_en); in rsnd_ssi_stop()
611 /* In multi-SSI mode, stop is performed by setting ssi0129 in in rsnd_ssi_stop()
618 * disable SSI, in rsnd_ssi_stop()
624 ssi->cr_en = 0; in rsnd_ssi_stop()
683 spin_lock(&priv->lock); in __rsnd_ssi_interrupt()
695 /* DMA only */ in __rsnd_ssi_interrupt()
707 spin_unlock(&priv->lock); in __rsnd_ssi_interrupt()
710 snd_pcm_period_elapsed(io->substream); in __rsnd_ssi_interrupt()
713 snd_pcm_stop_xrun(io->substream); in __rsnd_ssi_interrupt()
731 * SSIP (= SSI parent) needs to be special, otherwise, in rsnd_ssi_get_status()
732 * 2nd SSI might doesn't start. see also rsnd_mod_call() in rsnd_ssi_get_status()
734 * We can't include parent SSI status on SSI, because we don't know in rsnd_ssi_get_status()
735 * how many SSI requests parent SSI. Thus, it is localed on "io" now. in rsnd_ssi_get_status()
740 * 1) start Capture -> SSI0/SSI1 are started. in rsnd_ssi_get_status()
741 * 2) start Playback -> SSI0 doesn't work, because it is already in rsnd_ssi_get_status()
747 * IO-0: SRC0 -> CTU1 -+-> MUX -> DVC -> SSIU -> SSI0 in rsnd_ssi_get_status()
749 * IO-1: SRC1 -> CTU2 -+ in rsnd_ssi_get_status()
751 * 1) start IO-0 -> start SSI0 in rsnd_ssi_get_status()
752 * 2) start IO-1 -> SSI0 doesn't need to start, because it is in rsnd_ssi_get_status()
756 return &io->parent_ssi_status; in rsnd_ssi_get_status()
762 * SSI PIO
813 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_common_probe() local
818 * SSI Multi secondaries in rsnd_ssi_common_probe()
824 * It can't judge ssi parent at this point in rsnd_ssi_common_probe()
829 * SSI might be called again as PIO fallback in rsnd_ssi_common_probe()
835 * mod->status. in rsnd_ssi_common_probe()
839 if (!rsnd_flags_has(ssi, RSND_SSI_PROBED)) { in rsnd_ssi_common_probe()
840 ret = request_irq(ssi->irq, in rsnd_ssi_common_probe()
845 rsnd_flags_set(ssi, RSND_SSI_PROBED); in rsnd_ssi_common_probe()
855 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_common_remove() local
858 /* Do nothing if non SSI (= SSI parent, multi SSI) mod */ in rsnd_ssi_common_remove()
863 if (rsnd_flags_has(ssi, RSND_SSI_PROBED)) { in rsnd_ssi_common_remove()
864 free_irq(ssi->irq, mod); in rsnd_ssi_common_remove()
866 rsnd_flags_del(ssi, RSND_SSI_PROBED); in rsnd_ssi_common_remove()
873 * SSI PIO functions
879 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_pio_interrupt() local
880 u32 *buf = (u32 *)(runtime->dma_area + ssi->byte_pos); in rsnd_ssi_pio_interrupt()
885 if (snd_pcm_format_width(runtime->format) == 24) in rsnd_ssi_pio_interrupt()
898 byte_pos = ssi->byte_pos + sizeof(*buf); in rsnd_ssi_pio_interrupt()
900 if (byte_pos >= ssi->next_period_byte) { in rsnd_ssi_pio_interrupt()
901 int period_pos = byte_pos / ssi->byte_per_period; in rsnd_ssi_pio_interrupt()
903 if (period_pos >= runtime->periods) { in rsnd_ssi_pio_interrupt()
908 ssi->next_period_byte = (period_pos + 1) * ssi->byte_per_period; in rsnd_ssi_pio_interrupt()
913 WRITE_ONCE(ssi->byte_pos, byte_pos); in rsnd_ssi_pio_interrupt()
923 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_pio_init() local
926 ssi->byte_pos = 0; in rsnd_ssi_pio_init()
927 ssi->byte_per_period = runtime->period_size * in rsnd_ssi_pio_init()
928 runtime->channels * in rsnd_ssi_pio_init()
930 ssi->next_period_byte = ssi->byte_per_period; in rsnd_ssi_pio_init()
940 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_pio_pointer() local
943 *pointer = bytes_to_frames(runtime, READ_ONCE(ssi->byte_pos)); in rsnd_ssi_pio_pointer()
970 * SSIP/SSIU/IRQ/DMA are not needed on in rsnd_ssi_dma_probe()
971 * SSI Multi secondaries in rsnd_ssi_dma_probe()
980 /* SSI probe might be called many times in MUX multi path */ in rsnd_ssi_dma_probe()
981 ret = rsnd_dma_attach(io, mod, &io->dma); in rsnd_ssi_dma_probe()
995 * SSI .probe might be called again. in rsnd_ssi_fallback()
999 mod->ops = &rsnd_ssi_pio_ops; in rsnd_ssi_fallback()
1018 * If not, "rcar_sound.ssi" will be used. in rsnd_ssi_dma_req()
1039 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_debug_info() local
1043 seq_printf(m, "bit_clk_inv: %d\n", rdai->bit_clk_inv); in rsnd_ssi_debug_info()
1044 seq_printf(m, "frm_clk_inv: %d\n", rdai->frm_clk_inv); in rsnd_ssi_debug_info()
1050 seq_printf(m, "chan: %d\n", ssi->chan); in rsnd_ssi_debug_info()
1051 seq_printf(m, "user: %d\n", ssi->usrcnt); in rsnd_ssi_debug_info()
1080 return mod->ops == &rsnd_ssi_dma_ops; in rsnd_ssi_is_dma_mode()
1084 * ssi mod function
1099 /* try SSI -> SSIM1 -> SSIM2 -> SSIM3 */ in rsnd_ssi_connect()
1138 rsnd_ssi_connect(mod, &rdai->playback); in rsnd_parse_connect_ssi()
1140 rsnd_ssi_connect(mod, &rdai->capture); in rsnd_parse_connect_ssi()
1170 struct rsnd_ssi *ssi; in rsnd_ssi_probe() local
1176 return -EINVAL; in rsnd_ssi_probe()
1180 ret = -EINVAL; in rsnd_ssi_probe()
1184 ssi = devm_kcalloc(dev, nr, sizeof(*ssi), GFP_KERNEL); in rsnd_ssi_probe()
1185 if (!ssi) { in rsnd_ssi_probe()
1186 ret = -ENOMEM; in rsnd_ssi_probe()
1190 priv->ssi = ssi; in rsnd_ssi_probe()
1191 priv->ssi_nr = nr; in rsnd_ssi_probe()
1200 ret = -EINVAL; in rsnd_ssi_probe()
1205 ssi = rsnd_ssi_get(priv, i); in rsnd_ssi_probe()
1217 if (of_property_read_bool(np, "shared-pin")) in rsnd_ssi_probe()
1218 rsnd_flags_set(ssi, RSND_SSI_CLK_PIN_SHARE); in rsnd_ssi_probe()
1220 if (of_property_read_bool(np, "no-busif")) in rsnd_ssi_probe()
1221 rsnd_flags_set(ssi, RSND_SSI_NO_BUSIF); in rsnd_ssi_probe()
1223 ssi->irq = irq_of_parse_and_map(np, 0); in rsnd_ssi_probe()
1224 if (!ssi->irq) { in rsnd_ssi_probe()
1225 ret = -EINVAL; in rsnd_ssi_probe()
1230 if (of_property_read_bool(np, "pio-transfer")) in rsnd_ssi_probe()
1235 ret = rsnd_mod_init(priv, rsnd_mod_get(ssi), ops, clk, in rsnd_ssi_probe()
1255 struct rsnd_ssi *ssi; in rsnd_ssi_remove() local
1258 for_each_rsnd_ssi(ssi, priv, i) { in rsnd_ssi_remove()
1259 rsnd_mod_quit(rsnd_mod_get(ssi)); in rsnd_ssi_remove()