soc/uniphier/aio-compress.c

29 	struct uniphier_aio_sub *sub = &aio->sub[compr->direction];
37 	sub->compr_area = kzalloc(size, GFP_KERNEL);
38 	if (!sub->compr_area)
41 	if (sub->swm->dir == PORT_DIR_OUTPUT)
44 	sub->compr_addr = dma_map_single(dev, sub->compr_area, size, dma_dir);
45 	if (dma_mapping_error(dev, sub->compr_addr)) {
46 		kfree(sub->compr_area);
47 		sub->compr_area = NULL;
52 	sub->compr_bytes = size;
62 	struct uniphier_aio_sub *sub = &aio->sub[compr->direction];
65 	if (sub->swm->dir == PORT_DIR_OUTPUT)
68 	dma_unmap_single(dev, sub->compr_addr, sub->compr_bytes, dma_dir);
69 	kfree(sub->compr_area);
70 	sub->compr_area = NULL;
80 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];
83 	if (sub->cstream)
86 	sub->cstream = cstream;
87 	sub->pass_through = 1;
88 	sub->use_mmap = false;
94 	ret = aio_init(sub);
106 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];
116 	sub->cstream = NULL;
127 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];
129 	*params = sub->cparams.codec;
140 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];
155 	sub->iec_pc = IEC61937_PC_AAC;
157 	sub->cparams = *params;
158 	sub->setting = 1;
160 	aio_port_reset(sub);
161 	aio_src_reset(sub);
171 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];
173 	sub->setting = 0;
184 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];
189 	ret = aiodma_ch_set_param(sub);
193 	spin_lock_irqsave(&sub->lock, flags);
194 	ret = aiodma_rb_set_buffer(sub, sub->compr_addr,
195 				   sub->compr_addr + sub->compr_bytes,
197 	spin_unlock_irqrestore(&sub->lock, flags);
201 	ret = aio_port_set_param(sub, sub->pass_through, &sub->params);
204 	ret = aio_oport_set_stream_type(sub, sub->iec_pc);
207 	aio_port_set_enable(sub, 1);
209 	ret = aio_if_set_param(sub, sub->pass_through);
223 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];
228 	spin_lock_irqsave(&sub->lock, flags);
231 		aiodma_rb_sync(sub, sub->compr_addr, sub->compr_bytes, bytes);
232 		aiodma_ch_set_enable(sub, 1);
233 		sub->running = 1;
237 		sub->running = 0;
238 		aiodma_ch_set_enable(sub, 0);
245 	spin_unlock_irqrestore(&sub->lock, flags);
257 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];
262 	spin_lock_irqsave(&sub->lock, flags);
264 	aiodma_rb_sync(sub, sub->compr_addr, sub->compr_bytes, bytes);
266 	if (sub->swm->dir == PORT_DIR_OUTPUT) {
267 		pos = sub->rd_offs;
269 		tstamp->copied_total = sub->rd_total / 2;
271 		pos = sub->wr_offs;
272 		tstamp->copied_total = sub->rd_total;
276 	spin_unlock_irqrestore(&sub->lock, flags);
281 static int aio_compr_send_to_hw(struct uniphier_aio_sub *sub,
285 	u32 *dstbuf = (u32 *)(sub->compr_area + sub->wr_offs);
302 			sub->iec_header = true;
306 			if (sub->iec_header && sub->iec_pc != pc) {
308 				sub->iec_pc = pc;
309 				ret = aio_oport_set_stream_type(sub, pc);
313 			sub->iec_header = false;
332 	struct uniphier_aio_sub *sub = &aio->sub[cstream->direction];
333 	size_t cnt = min_t(size_t, count, aio_rb_space_to_end(sub) / 2);
342 	if (sub->swm->dir == PORT_DIR_OUTPUT) {
343 		dma_addr_t dmapos = sub->compr_addr + sub->wr_offs;
349 		ret = aio_compr_send_to_hw(sub, buf, s);
352 		dma_addr_t dmapos = sub->compr_addr + sub->rd_offs;
357 		ret = copy_to_user(buf, sub->compr_area + sub->rd_offs, s);
363 	spin_lock_irqsave(&sub->lock, flags);
365 	sub->threshold = 2 * bytes;
366 	aiodma_rb_set_threshold(sub, sub->compr_bytes, 2 * bytes);
368 	if (sub->swm->dir == PORT_DIR_OUTPUT) {
369 		sub->wr_offs += s;
370 		if (sub->wr_offs >= sub->compr_bytes)
371 			sub->wr_offs -= sub->compr_bytes;
373 		sub->rd_offs += s;
374 		if (sub->rd_offs >= sub->compr_bytes)
375 			sub->rd_offs -= sub->compr_bytes;
377 	aiodma_rb_sync(sub, sub->compr_addr, sub->compr_bytes, bytes);
379 	spin_unlock_irqrestore(&sub->lock, flags);