Lines Matching full:ssi
3 // Renesas R-Car SSIU/SSI support
13 * SSI interrupt status debug message when debugging
61 #define EN (1 << 0) /* SSI Module Enable */
77 #define SSI_NAME "ssi"
101 #define RSND_SSI_NO_BUSIF (1 << 1) /* SSI+DMA without BUSIF */
107 ((pos) = ((struct rsnd_ssi *)(priv)->ssi + i)); \
110 #define rsnd_ssi_get(priv, id) ((struct rsnd_ssi *)(priv->ssi) + id)
113 #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()
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()
319 * SSI clock will be output contiguously in rsnd_ssi_master_clk_start()
323 * for SSI parent in rsnd_ssi_master_clk_start()
328 ssi->cr_clk = FORCE | rsnd_rdai_width_to_swl(rdai) | in rsnd_ssi_master_clk_start()
330 ssi->wsr = CONT; in rsnd_ssi_master_clk_start()
331 ssi->rate = rate; in rsnd_ssi_master_clk_start()
332 ssi->chan = chan; in rsnd_ssi_master_clk_start()
344 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_master_clk_stop() local
352 if (ssi->usrcnt > 1) in rsnd_ssi_master_clk_stop()
355 ssi->cr_clk = 0; in rsnd_ssi_master_clk_stop()
356 ssi->rate = 0; in rsnd_ssi_master_clk_stop()
357 ssi->chan = 0; in rsnd_ssi_master_clk_stop()
369 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_config_init() local
370 u32 cr_own = ssi->cr_own; in rsnd_ssi_config_init()
371 u32 cr_mode = ssi->cr_mode; in rsnd_ssi_config_init()
372 u32 wsr = ssi->wsr; in rsnd_ssi_config_init()
403 wsr = ssi->wsr; in rsnd_ssi_config_init()
486 ssi->cr_own = cr_own; in rsnd_ssi_config_init()
487 ssi->cr_mode = cr_mode; in rsnd_ssi_config_init()
488 ssi->wsr = wsr; in rsnd_ssi_config_init()
493 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_register_setup() local
495 rsnd_mod_write(mod, SSIWSR, ssi->wsr); in rsnd_ssi_register_setup()
496 rsnd_mod_write(mod, SSICR, ssi->cr_own | in rsnd_ssi_register_setup()
497 ssi->cr_clk | in rsnd_ssi_register_setup()
498 ssi->cr_mode | in rsnd_ssi_register_setup()
499 ssi->cr_en); in rsnd_ssi_register_setup()
503 * SSI mod common functions
509 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_init() local
519 ssi->usrcnt++; in rsnd_ssi_init()
539 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_quit() local
552 if (!ssi->usrcnt) { in rsnd_ssi_quit()
561 ssi->usrcnt--; in rsnd_ssi_quit()
563 if (!ssi->usrcnt) { in rsnd_ssi_quit()
564 ssi->cr_own = 0; in rsnd_ssi_quit()
565 ssi->cr_mode = 0; in rsnd_ssi_quit()
566 ssi->wsr = 0; in rsnd_ssi_quit()
627 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_start() local
641 * SSI parent EN is not needed. in rsnd_ssi_start()
646 ssi->cr_en = EN; in rsnd_ssi_start()
648 rsnd_mod_write(mod, SSICR, ssi->cr_own | in rsnd_ssi_start()
649 ssi->cr_clk | in rsnd_ssi_start()
650 ssi->cr_mode | in rsnd_ssi_start()
651 ssi->cr_en); in rsnd_ssi_start()
660 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_stop() local
669 cr = ssi->cr_own | in rsnd_ssi_stop()
670 ssi->cr_clk; in rsnd_ssi_stop()
678 rsnd_mod_write(mod, SSICR, cr | ssi->cr_en); in rsnd_ssi_stop()
682 /* In multi-SSI mode, stop is performed by setting ssi0129 in in rsnd_ssi_stop()
689 * disable SSI, in rsnd_ssi_stop()
695 ssi->cr_en = 0; in rsnd_ssi_stop()
851 * SSIP (= SSI parent) needs to be special, otherwise, in rsnd_ssi_get_status()
852 * 2nd SSI might doesn't start. see also rsnd_mod_call() in rsnd_ssi_get_status()
854 * We can't include parent SSI status on SSI, because we don't know in rsnd_ssi_get_status()
855 * how many SSI requests parent SSI. Thus, it is localed on "io" now. in rsnd_ssi_get_status()
882 * SSI PIO
933 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_common_probe() local
938 * SSI Multi secondaries in rsnd_ssi_common_probe()
944 * It can't judge ssi parent at this point in rsnd_ssi_common_probe()
949 * SSI might be called again as PIO fallback in rsnd_ssi_common_probe()
959 if (!rsnd_flags_has(ssi, RSND_SSI_PROBED)) { in rsnd_ssi_common_probe()
960 ret = request_irq(ssi->irq, in rsnd_ssi_common_probe()
965 rsnd_flags_set(ssi, RSND_SSI_PROBED); in rsnd_ssi_common_probe()
975 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_common_remove() local
978 /* Do nothing if non SSI (= SSI parent, multi SSI) mod */ in rsnd_ssi_common_remove()
983 if (rsnd_flags_has(ssi, RSND_SSI_PROBED)) { in rsnd_ssi_common_remove()
984 free_irq(ssi->irq, mod); in rsnd_ssi_common_remove()
986 rsnd_flags_del(ssi, RSND_SSI_PROBED); in rsnd_ssi_common_remove()
993 * SSI PIO functions
999 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_pio_interrupt() local
1000 u32 *buf = (u32 *)(runtime->dma_area + ssi->byte_pos); in rsnd_ssi_pio_interrupt()
1018 byte_pos = ssi->byte_pos + sizeof(*buf); in rsnd_ssi_pio_interrupt()
1020 if (byte_pos >= ssi->next_period_byte) { in rsnd_ssi_pio_interrupt()
1021 int period_pos = byte_pos / ssi->byte_per_period; in rsnd_ssi_pio_interrupt()
1028 ssi->next_period_byte = (period_pos + 1) * ssi->byte_per_period; in rsnd_ssi_pio_interrupt()
1033 WRITE_ONCE(ssi->byte_pos, byte_pos); in rsnd_ssi_pio_interrupt()
1043 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_pio_init() local
1046 ssi->byte_pos = 0; in rsnd_ssi_pio_init()
1047 ssi->byte_per_period = runtime->period_size * in rsnd_ssi_pio_init()
1050 ssi->next_period_byte = ssi->byte_per_period; in rsnd_ssi_pio_init()
1060 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); in rsnd_ssi_pio_pointer() local
1063 *pointer = bytes_to_frames(runtime, READ_ONCE(ssi->byte_pos)); in rsnd_ssi_pio_pointer()
1091 * SSI Multi secondaries in rsnd_ssi_dma_probe()
1100 /* SSI probe might be called many times in MUX multi path */ in rsnd_ssi_dma_probe()
1115 * SSI .probe might be called again. in rsnd_ssi_fallback()
1138 * If not, "rcar_sound.ssi" will be used. in rsnd_ssi_dma_req()
1175 * ssi mod function
1190 /* try SSI -> SSIM1 -> SSIM2 -> SSIM3 */ in rsnd_ssi_connect()
1252 struct rsnd_ssi *ssi; in rsnd_ssi_probe() local
1266 ssi = devm_kcalloc(dev, nr, sizeof(*ssi), GFP_KERNEL); in rsnd_ssi_probe()
1267 if (!ssi) { in rsnd_ssi_probe()
1272 priv->ssi = ssi; in rsnd_ssi_probe()
1280 ssi = rsnd_ssi_get(priv, i); in rsnd_ssi_probe()
1293 rsnd_flags_set(ssi, RSND_SSI_CLK_PIN_SHARE); in rsnd_ssi_probe()
1296 rsnd_flags_set(ssi, RSND_SSI_NO_BUSIF); in rsnd_ssi_probe()
1298 ssi->irq = irq_of_parse_and_map(np, 0); in rsnd_ssi_probe()
1299 if (!ssi->irq) { in rsnd_ssi_probe()
1310 ret = rsnd_mod_init(priv, rsnd_mod_get(ssi), ops, clk, in rsnd_ssi_probe()
1330 struct rsnd_ssi *ssi; in rsnd_ssi_remove() local
1333 for_each_rsnd_ssi(ssi, priv, i) { in rsnd_ssi_remove()
1334 rsnd_mod_quit(rsnd_mod_get(ssi)); in rsnd_ssi_remove()