1 // SPDX-License-Identifier: GPL-2.0
5 // Copyright (c) 2017-2018 Socionext Inc.
9 #include <linux/dma-mapping.h>
26 	struct snd_compr *compr = rtd->compr;  in uniphier_aio_comprdma_new()
27 	struct device *dev = compr->card->dev;  in uniphier_aio_comprdma_new()
29 	struct uniphier_aio_sub *sub = &aio->sub[compr->direction];  in uniphier_aio_comprdma_new()  local
37 	sub->compr_area = kzalloc(size, GFP_KERNEL);  in uniphier_aio_comprdma_new()
38 	if (!sub->compr_area)  in uniphier_aio_comprdma_new()
39 		return -ENOMEM;  in uniphier_aio_comprdma_new()
41 	if (sub->swm->dir == PORT_DIR_OUTPUT)  in uniphier_aio_comprdma_new()
44 	sub->compr_addr = dma_map_single(dev, sub->compr_area, size, dma_dir);  in uniphier_aio_comprdma_new()
45 	if (dma_mapping_error(dev, sub->compr_addr)) {  in uniphier_aio_comprdma_new()
46 		kfree(sub->compr_area);  in uniphier_aio_comprdma_new()
47 		sub->compr_area = NULL;  in uniphier_aio_comprdma_new()
49 		return -ENOMEM;  in uniphier_aio_comprdma_new()
52 	sub->compr_bytes = size;  in uniphier_aio_comprdma_new()
59 	struct snd_compr *compr = rtd->compr;  in uniphier_aio_comprdma_free()
60 	struct device *dev = compr->card->dev;  in uniphier_aio_comprdma_free()
62 	struct uniphier_aio_sub *sub = &aio->sub[compr->direction];  in uniphier_aio_comprdma_free()  local
65 	if (sub->swm->dir == PORT_DIR_OUTPUT)  in uniphier_aio_comprdma_free()
68 	dma_unmap_single(dev, sub->compr_addr, sub->compr_bytes, dma_dir);  in uniphier_aio_comprdma_free()
69 	kfree(sub->compr_area);  in uniphier_aio_comprdma_free()
70 	sub->compr_area = NULL;  in uniphier_aio_comprdma_free()
78 	struct snd_soc_pcm_runtime *rtd = cstream->private_data;  in uniphier_aio_compr_open()
80 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];  in uniphier_aio_compr_open()  local
83 	if (sub->cstream)  in uniphier_aio_compr_open()
84 		return -EBUSY;  in uniphier_aio_compr_open()
86 	sub->cstream = cstream;  in uniphier_aio_compr_open()
87 	sub->pass_through = 1;  in uniphier_aio_compr_open()
88 	sub->use_mmap = false;  in uniphier_aio_compr_open()
94 	ret = aio_init(sub);  in uniphier_aio_compr_open()
104 	struct snd_soc_pcm_runtime *rtd = cstream->private_data;  in uniphier_aio_compr_free()
106 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];  in uniphier_aio_compr_free()  local
116 	sub->cstream = NULL;  in uniphier_aio_compr_free()
125 	struct snd_soc_pcm_runtime *rtd = cstream->private_data;  in uniphier_aio_compr_get_params()
127 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];  in uniphier_aio_compr_get_params()  local
129 	*params = sub->cparams.codec;  in uniphier_aio_compr_get_params()
138 	struct snd_soc_pcm_runtime *rtd = cstream->private_data;  in uniphier_aio_compr_set_params()
140 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];  in uniphier_aio_compr_set_params()  local
141 	struct device *dev = &aio->chip->pdev->dev;  in uniphier_aio_compr_set_params()
143 	if (params->codec.id != SND_AUDIOCODEC_IEC61937) {  in uniphier_aio_compr_set_params()
145 			params->codec.id);  in uniphier_aio_compr_set_params()
146 		return -EINVAL;  in uniphier_aio_compr_set_params()
148 	if (params->codec.profile != SND_AUDIOPROFILE_IEC61937_SPDIF) {  in uniphier_aio_compr_set_params()
150 			params->codec.profile);  in uniphier_aio_compr_set_params()
151 		return -EINVAL;  in uniphier_aio_compr_set_params()
154 	/* IEC frame type will be changed after received valid data */  in uniphier_aio_compr_set_params()
155 	sub->iec_pc = IEC61937_PC_AAC;  in uniphier_aio_compr_set_params()
157 	sub->cparams = *params;  in uniphier_aio_compr_set_params()
158 	sub->setting = 1;  in uniphier_aio_compr_set_params()
160 	aio_port_reset(sub);  in uniphier_aio_compr_set_params()
161 	aio_src_reset(sub);  in uniphier_aio_compr_set_params()
169 	struct snd_soc_pcm_runtime *rtd = cstream->private_data;  in uniphier_aio_compr_hw_free()
171 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];  in uniphier_aio_compr_hw_free()  local
173 	sub->setting = 0;  in uniphier_aio_compr_hw_free()
181 	struct snd_soc_pcm_runtime *rtd = cstream->private_data;  in uniphier_aio_compr_prepare()
182 	struct snd_compr_runtime *runtime = cstream->runtime;  in uniphier_aio_compr_prepare()
184 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];  in uniphier_aio_compr_prepare()  local
185 	int bytes = runtime->fragment_size;  in uniphier_aio_compr_prepare()
189 	ret = aiodma_ch_set_param(sub);  in uniphier_aio_compr_prepare()
193 	spin_lock_irqsave(&sub->lock, flags);  in uniphier_aio_compr_prepare()
194 	ret = aiodma_rb_set_buffer(sub, sub->compr_addr,  in uniphier_aio_compr_prepare()
195 				   sub->compr_addr + sub->compr_bytes,  in uniphier_aio_compr_prepare()
197 	spin_unlock_irqrestore(&sub->lock, flags);  in uniphier_aio_compr_prepare()
201 	ret = aio_port_set_param(sub, sub->pass_through, &sub->params);  in uniphier_aio_compr_prepare()
204 	ret = aio_oport_set_stream_type(sub, sub->iec_pc);  in uniphier_aio_compr_prepare()
207 	aio_port_set_enable(sub, 1);  in uniphier_aio_compr_prepare()
209 	ret = aio_if_set_param(sub, sub->pass_through);  in uniphier_aio_compr_prepare()
220 	struct snd_soc_pcm_runtime *rtd = cstream->private_data;  in uniphier_aio_compr_trigger()
221 	struct snd_compr_runtime *runtime = cstream->runtime;  in uniphier_aio_compr_trigger()
223 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];  in uniphier_aio_compr_trigger()  local
224 	struct device *dev = &aio->chip->pdev->dev;  in uniphier_aio_compr_trigger()
225 	int bytes = runtime->fragment_size, ret = 0;  in uniphier_aio_compr_trigger()
228 	spin_lock_irqsave(&sub->lock, flags);  in uniphier_aio_compr_trigger()
231 		aiodma_rb_sync(sub, sub->compr_addr, sub->compr_bytes, bytes);  in uniphier_aio_compr_trigger()
232 		aiodma_ch_set_enable(sub, 1);  in uniphier_aio_compr_trigger()
233 		sub->running = 1;  in uniphier_aio_compr_trigger()
237 		sub->running = 0;  in uniphier_aio_compr_trigger()
238 		aiodma_ch_set_enable(sub, 0);  in uniphier_aio_compr_trigger()
243 		ret = -EINVAL;  in uniphier_aio_compr_trigger()
245 	spin_unlock_irqrestore(&sub->lock, flags);  in uniphier_aio_compr_trigger()
254 	struct snd_soc_pcm_runtime *rtd = cstream->private_data;  in uniphier_aio_compr_pointer()
255 	struct snd_compr_runtime *runtime = cstream->runtime;  in uniphier_aio_compr_pointer()
257 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];  in uniphier_aio_compr_pointer()  local
258 	int bytes = runtime->fragment_size;  in uniphier_aio_compr_pointer()
262 	spin_lock_irqsave(&sub->lock, flags);  in uniphier_aio_compr_pointer()
264 	aiodma_rb_sync(sub, sub->compr_addr, sub->compr_bytes, bytes);  in uniphier_aio_compr_pointer()
266 	if (sub->swm->dir == PORT_DIR_OUTPUT) {  in uniphier_aio_compr_pointer()
267 		pos = sub->rd_offs;  in uniphier_aio_compr_pointer()
269 		tstamp->copied_total = sub->rd_total / 2;  in uniphier_aio_compr_pointer()
271 		pos = sub->wr_offs;  in uniphier_aio_compr_pointer()
272 		tstamp->copied_total = sub->rd_total;  in uniphier_aio_compr_pointer()
274 	tstamp->byte_offset = pos;  in uniphier_aio_compr_pointer()
276 	spin_unlock_irqrestore(&sub->lock, flags);  in uniphier_aio_compr_pointer()
281 static int aio_compr_send_to_hw(struct uniphier_aio_sub *sub,  in aio_compr_send_to_hw()  argument
285 	u32 *dstbuf = (u32 *)(sub->compr_area + sub->wr_offs);  in aio_compr_send_to_hw()
302 			sub->iec_header = true;  in aio_compr_send_to_hw()
306 			if (sub->iec_header && sub->iec_pc != pc) {  in aio_compr_send_to_hw()
307 				/* Force overwrite IEC frame type */  in aio_compr_send_to_hw()
308 				sub->iec_pc = pc;  in aio_compr_send_to_hw()
309 				ret = aio_oport_set_stream_type(sub, pc);  in aio_compr_send_to_hw()
313 			sub->iec_header = false;  in aio_compr_send_to_hw()
318 		dstsize -= sizeof(u32) * 2;  in aio_compr_send_to_hw()
328 	struct snd_soc_pcm_runtime *rtd = cstream->private_data;  in uniphier_aio_compr_copy()
329 	struct snd_compr_runtime *runtime = cstream->runtime;  in uniphier_aio_compr_copy()
330 	struct device *carddev = rtd->compr->card->dev;  in uniphier_aio_compr_copy()
332 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];  in uniphier_aio_compr_copy()  local
333 	size_t cnt = min_t(size_t, count, aio_rb_space_to_end(sub) / 2);  in uniphier_aio_compr_copy()
334 	int bytes = runtime->fragment_size;  in uniphier_aio_compr_copy()
342 	if (sub->swm->dir == PORT_DIR_OUTPUT) {  in uniphier_aio_compr_copy()
343 		dma_addr_t dmapos = sub->compr_addr + sub->wr_offs;  in uniphier_aio_compr_copy()
349 		ret = aio_compr_send_to_hw(sub, buf, s);  in uniphier_aio_compr_copy()
352 		dma_addr_t dmapos = sub->compr_addr + sub->rd_offs;  in uniphier_aio_compr_copy()
357 		ret = copy_to_user(buf, sub->compr_area + sub->rd_offs, s);  in uniphier_aio_compr_copy()
361 		return -EFAULT;  in uniphier_aio_compr_copy()
363 	spin_lock_irqsave(&sub->lock, flags);  in uniphier_aio_compr_copy()
365 	sub->threshold = 2 * bytes;  in uniphier_aio_compr_copy()
366 	aiodma_rb_set_threshold(sub, sub->compr_bytes, 2 * bytes);  in uniphier_aio_compr_copy()
368 	if (sub->swm->dir == PORT_DIR_OUTPUT) {  in uniphier_aio_compr_copy()
369 		sub->wr_offs += s;  in uniphier_aio_compr_copy()
370 		if (sub->wr_offs >= sub->compr_bytes)  in uniphier_aio_compr_copy()
371 			sub->wr_offs -= sub->compr_bytes;  in uniphier_aio_compr_copy()
373 		sub->rd_offs += s;  in uniphier_aio_compr_copy()
374 		if (sub->rd_offs >= sub->compr_bytes)  in uniphier_aio_compr_copy()
375 			sub->rd_offs -= sub->compr_bytes;  in uniphier_aio_compr_copy()
377 	aiodma_rb_sync(sub, sub->compr_addr, sub->compr_bytes, bytes);  in uniphier_aio_compr_copy()
379 	spin_unlock_irqrestore(&sub->lock, flags);  in uniphier_aio_compr_copy()
388 	caps->num_codecs = 1;  in uniphier_aio_compr_get_caps()
389 	caps->min_fragment_size = AUD_MIN_FRAGMENT_SIZE;  in uniphier_aio_compr_get_caps()
390 	caps->max_fragment_size = AUD_MAX_FRAGMENT_SIZE;  in uniphier_aio_compr_get_caps()
391 	caps->min_fragments = AUD_MIN_FRAGMENT;  in uniphier_aio_compr_get_caps()
392 	caps->max_fragments = AUD_MAX_FRAGMENT;  in uniphier_aio_compr_get_caps()
393 	caps->codecs[0] = SND_AUDIOCODEC_IEC61937;  in uniphier_aio_compr_get_caps()
415 	if (codec->codec == SND_AUDIOCODEC_IEC61937)  in uniphier_aio_compr_get_codec_caps()
418 		return -EINVAL;  in uniphier_aio_compr_get_codec_caps()