1 // SPDX-License-Identifier: GPL-2.0
3 // Renesas R-Car SRC support
28 	u32 convert_rate; /* sampling rate convert */
34 #define rsnd_src_get(priv, id) ((struct rsnd_src *)(priv->src) + id)
35 #define rsnd_src_nr(priv) ((priv)->src_nr)
36 #define rsnd_src_sync_is_enabled(mod) (rsnd_mod_to_src(mod)->sen.val)
44 	     ((pos) = (struct rsnd_src *)(priv)->src + i);	\
49  *		image of SRC (Sampling Rate Converter)
51  * 96kHz   <-> +-----+	48kHz	+-----+	 48kHz	+-------+
52  * 48kHz   <-> | SRC | <------>	| SSI |	<----->	| codec |
53  * 44.1kHz <-> +-----+		+-----+		+-------+
92 		return src->convert_rate;  in rsnd_src_convert_rate()
94 	convert_rate = src->sync.val;  in rsnd_src_convert_rate()
97 		convert_rate = src->convert_rate;  in rsnd_src_convert_rate()
100 		convert_rate = runtime->rate;  in rsnd_src_convert_rate()
116 	 * runtime_rate -> [SRC] -> convert_rate  in rsnd_src_get_rate()
119 	 * convert_rate -> [SRC] -> runtime_rate  in rsnd_src_get_rate()
123 		return runtime->rate;  in rsnd_src_get_rate()
127 	 * otherwise, return runtime->rate as usual  in rsnd_src_get_rate()
133 		rate = runtime->rate;  in rsnd_src_get_rate()
144 	struct snd_soc_pcm_runtime *fe = substream->private_data;  in rsnd_src_hw_params()
148 	 * sampling rate convert. Then, SRC should be FE.  in rsnd_src_hw_params()
155 	src->convert_rate = 0;  in rsnd_src_hw_params()
156 	if (fe->dai_link->dynamic) {  in rsnd_src_hw_params()
157 		int stream = substream->stream;  in rsnd_src_hw_params()
161 		list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {  in rsnd_src_hw_params()
162 			be_params = &dpcm->hw_params;  in rsnd_src_hw_params()
165 				src->convert_rate = params_rate(be_params);  in rsnd_src_hw_params()
193 	/* 6 - 1/6 are very enough ratio for SRC_BSDSR */  in rsnd_src_set_convert_rate()
251 		bsdsr = 0x02400000; /* 6 - 1/6 */  in rsnd_src_set_convert_rate()
252 		bsisr = 0x00100060; /* 6 - 1/6 */  in rsnd_src_set_convert_rate()
255 		bsdsr = 0x01800000; /* 6 - 1/6 */  in rsnd_src_set_convert_rate()
256 		bsisr = 0x00100060 ;/* 6 - 1/6 */  in rsnd_src_set_convert_rate()
291 	int irq = src->irq;  in rsnd_src_irq()
299 	 * IRQ is not supported on non-DT  in rsnd_src_irq()
311 	 * ignore over flow error when rsnd_src_sync_is_enabled()  in rsnd_src_irq()
344 	 * ignore over flow error when rsnd_src_sync_is_enabled()  in rsnd_src_error_occurred()
397 	src->sync.val = 0;  in rsnd_src_init()
421 	src->sync.val = 0;  in rsnd_src_quit()
432 	spin_lock(&priv->lock);  in __rsnd_src_interrupt()
444 	spin_unlock(&priv->lock);  in __rsnd_src_interrupt()
447 		snd_pcm_stop_xrun(io->substream);  in __rsnd_src_interrupt()
465 	int irq = src->irq;  in rsnd_src_probe_()
470 		 * IRQ is not supported on non-DT  in rsnd_src_probe_()
482 	ret = rsnd_dma_attach(io, mod, &src->dma);  in rsnd_src_probe_()
514 			       &src->sen, 1);  in rsnd_src_pcm_new()
524 			       &src->sync, 192000);  in rsnd_src_pcm_new()
570 		ret = -EINVAL;  in rsnd_src_probe()
576 		ret = -ENOMEM;  in rsnd_src_probe()
580 	priv->src_nr	= nr;  in rsnd_src_probe()
581 	priv->src	= src;  in rsnd_src_probe()
593 		src->irq = irq_of_parse_and_map(np, 0);  in rsnd_src_probe()
594 		if (!src->irq) {  in rsnd_src_probe()
595 			ret = -EINVAL;  in rsnd_src_probe()