pci/tw686x/tw686x-audio.c

38 		struct tw686x_audio_channel *ac = &dev->audio_channels[ch];
45 		spin_lock_irqsave(&ac->lock, flags);
48 		if (!ac->ss || !ac->curr_bufs[0] || !ac->curr_bufs[1]) {
49 			spin_unlock_irqrestore(&ac->lock, flags);
53 		if (!list_empty(&ac->buf_list)) {
54 			next = list_first_entry(&ac->buf_list,
56 			list_move_tail(&next->list, &ac->buf_list);
57 			done = ac->curr_bufs[!pb];
58 			ac->curr_bufs[pb] = next;
60 		spin_unlock_irqrestore(&ac->lock, flags);
68 		desc = &ac->dma_descs[pb];
76 		ac->ptr = done->dma - ac->buf[0].dma;
77 		snd_pcm_period_elapsed(ac->ss);
107 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];
111 	ac->ss = ss;
124 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];
126 	ac->ss = NULL;
133 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];
149 	tw686x_disable_channel(dev, AUDIO_CHANNEL_OFFSET + ac->ch);
177 	spin_lock_irqsave(&ac->lock, flags);
178 	INIT_LIST_HEAD(&ac->buf_list);
181 		ac->buf[i].dma = rt->dma_addr + period_size * i;
182 		ac->buf[i].virt = rt->dma_area + period_size * i;
183 		INIT_LIST_HEAD(&ac->buf[i].list);
184 		list_add_tail(&ac->buf[i].list, &ac->buf_list);
187 	p_buf =	list_first_entry(&ac->buf_list, struct tw686x_audio_buf, list);
188 	list_move_tail(&p_buf->list, &ac->buf_list);
190 	b_buf =	list_first_entry(&ac->buf_list, struct tw686x_audio_buf, list);
191 	list_move_tail(&b_buf->list, &ac->buf_list);
193 	ac->curr_bufs[0] = p_buf;
194 	ac->curr_bufs[1] = b_buf;
195 	ac->ptr = 0;
198 		reg_write(dev, ADMA_P_ADDR[ac->ch], p_buf->dma);
199 		reg_write(dev, ADMA_B_ADDR[ac->ch], b_buf->dma);
202 	spin_unlock_irqrestore(&ac->lock, flags);
214 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];
220 		if (ac->curr_bufs[0] && ac->curr_bufs[1]) {
224 				AUDIO_CHANNEL_OFFSET + ac->ch);
236 		tw686x_disable_channel(dev, AUDIO_CHANNEL_OFFSET + ac->ch);
239 		spin_lock_irqsave(&ac->lock, flags);
240 		ac->curr_bufs[0] = NULL;
241 		ac->curr_bufs[1] = NULL;
242 		spin_unlock_irqrestore(&ac->lock, flags);
253 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];
255 	return bytes_to_frames(ss->runtime, ac->ptr);
296 				  struct tw686x_audio_channel *ac)
301 		if (!ac->dma_descs[pb].virt)
303 		dma_free_coherent(&dev->pci_dev->dev, ac->dma_descs[pb].size,
304 				  ac->dma_descs[pb].virt,
305 				  ac->dma_descs[pb].phys);
306 		ac->dma_descs[pb].virt = NULL;
311 				  struct tw686x_audio_channel *ac)
324 		u32 reg = pb ? ADMA_B_ADDR[ac->ch] : ADMA_P_ADDR[ac->ch];
329 					  &ac->dma_descs[pb].phys, GFP_KERNEL);
333 				ac->ch, pb ? "B" : "P");
336 		ac->dma_descs[pb].virt = virt;
337 		ac->dma_descs[pb].size = AUDIO_DMA_SIZE_MAX;
338 		reg_write(dev, reg, ac->dma_descs[pb].phys);
384 		struct tw686x_audio_channel *ac;
386 		ac = &dev->audio_channels[ch];
387 		spin_lock_init(&ac->lock);
388 		ac->dev = dev;
389 		ac->ch = ch;
391 		err = tw686x_audio_dma_alloc(dev, ac);