1 // SPDX-License-Identifier: GPL-2.0
3 // Renesas R-Car SSIU/SSI support
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)
294 	if (ssi->usrcnt > 0) {  in rsnd_ssi_master_clk_start()
295 		if (ssi->rate != rate) {  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()
302 			return -EINVAL;  in rsnd_ssi_master_clk_start()
308 	ret = -EIO;  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()
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()
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()
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()
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()
487 	ssi->usrcnt++;  in rsnd_ssi_init()
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()
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()
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()
624 	ssi->cr_en = 0;  in rsnd_ssi_stop()
683 	spin_lock(&priv->lock);  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()
737 	 *	Playback: SSI0  in rsnd_ssi_get_status()
738 	 *	Capture : SSI1 (needs SSI0)  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()
744 	 * OTOH, using each mod's status is good for MUX case.  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()
835 	 * mod->status.  in rsnd_ssi_common_probe()
840 		ret = request_irq(ssi->irq,  in rsnd_ssi_common_probe()
864 		free_irq(ssi->irq, mod);  in rsnd_ssi_common_remove()
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()
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()
943 	*pointer = bytes_to_frames(runtime, READ_ONCE(ssi->byte_pos));  in rsnd_ssi_pio_pointer()
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()
999 	mod->ops = &rsnd_ssi_pio_ops;  in rsnd_ssi_fallback()
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()
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()
1176 		return -EINVAL;  in rsnd_ssi_probe()
1180 		ret = -EINVAL;  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()
1217 		if (of_property_read_bool(np, "shared-pin"))  in rsnd_ssi_probe()
1220 		if (of_property_read_bool(np, "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()