Lines Matching full:stream
41 struct audio_stream stream[2]; /* playback & capture */ member
44 static void au1000_release_dma_link(struct audio_stream *stream) in au1000_release_dma_link() argument
49 stream->period_size = 0; in au1000_release_dma_link()
50 stream->periods = 0; in au1000_release_dma_link()
51 pointer = stream->buffer; in au1000_release_dma_link()
58 } while (pointer != stream->buffer); in au1000_release_dma_link()
59 stream->buffer = NULL; in au1000_release_dma_link()
62 static int au1000_setup_dma_link(struct audio_stream *stream, in au1000_setup_dma_link() argument
66 struct snd_pcm_substream *substream = stream->substream; in au1000_setup_dma_link()
74 if (stream->period_size == period_bytes && in au1000_setup_dma_link()
75 stream->periods == periods) in au1000_setup_dma_link()
78 au1000_release_dma_link(stream); in au1000_setup_dma_link()
80 stream->period_size = period_bytes; in au1000_setup_dma_link()
81 stream->periods = periods; in au1000_setup_dma_link()
83 stream->buffer = kmalloc(sizeof(struct pcm_period), GFP_KERNEL); in au1000_setup_dma_link()
84 if (!stream->buffer) in au1000_setup_dma_link()
86 pointer = stream->buffer; in au1000_setup_dma_link()
94 au1000_release_dma_link(stream); in au1000_setup_dma_link()
100 pointer->next = stream->buffer; in au1000_setup_dma_link()
104 static void au1000_dma_stop(struct audio_stream *stream) in au1000_dma_stop() argument
106 if (stream->buffer) in au1000_dma_stop()
107 disable_dma(stream->dma); in au1000_dma_stop()
110 static void au1000_dma_start(struct audio_stream *stream) in au1000_dma_start() argument
112 if (!stream->buffer) in au1000_dma_start()
115 init_dma(stream->dma); in au1000_dma_start()
116 if (get_dma_active_buffer(stream->dma) == 0) { in au1000_dma_start()
117 clear_dma_done0(stream->dma); in au1000_dma_start()
118 set_dma_addr0(stream->dma, stream->buffer->start); in au1000_dma_start()
119 set_dma_count0(stream->dma, stream->period_size >> 1); in au1000_dma_start()
120 set_dma_addr1(stream->dma, stream->buffer->next->start); in au1000_dma_start()
121 set_dma_count1(stream->dma, stream->period_size >> 1); in au1000_dma_start()
123 clear_dma_done1(stream->dma); in au1000_dma_start()
124 set_dma_addr1(stream->dma, stream->buffer->start); in au1000_dma_start()
125 set_dma_count1(stream->dma, stream->period_size >> 1); in au1000_dma_start()
126 set_dma_addr0(stream->dma, stream->buffer->next->start); in au1000_dma_start()
127 set_dma_count0(stream->dma, stream->period_size >> 1); in au1000_dma_start()
129 enable_dma_buffers(stream->dma); in au1000_dma_start()
130 start_dma(stream->dma); in au1000_dma_start()
135 struct audio_stream *stream = (struct audio_stream *)ptr; in au1000_dma_interrupt() local
136 struct snd_pcm_substream *substream = stream->substream; in au1000_dma_interrupt()
138 switch (get_dma_buffer_done(stream->dma)) { in au1000_dma_interrupt()
140 stream->buffer = stream->buffer->next; in au1000_dma_interrupt()
141 clear_dma_done0(stream->dma); in au1000_dma_interrupt()
142 set_dma_addr0(stream->dma, stream->buffer->next->start); in au1000_dma_interrupt()
143 set_dma_count0(stream->dma, stream->period_size >> 1); in au1000_dma_interrupt()
144 enable_dma_buffer0(stream->dma); in au1000_dma_interrupt()
147 stream->buffer = stream->buffer->next; in au1000_dma_interrupt()
148 clear_dma_done1(stream->dma); in au1000_dma_interrupt()
149 set_dma_addr1(stream->dma, stream->buffer->next->start); in au1000_dma_interrupt()
150 set_dma_count1(stream->dma, stream->period_size >> 1); in au1000_dma_interrupt()
151 enable_dma_buffer1(stream->dma); in au1000_dma_interrupt()
154 pr_debug("DMA %d missed interrupt.\n", stream->dma); in au1000_dma_interrupt()
155 au1000_dma_stop(stream); in au1000_dma_interrupt()
156 au1000_dma_start(stream); in au1000_dma_interrupt()
159 pr_debug("DMA %d empty irq.\n", stream->dma); in au1000_dma_interrupt()
186 return &(ctx->stream[ss->stream]); in ss_to_as()
193 int *dmaids, s = substream->stream; in alchemy_pcm_open()
202 ctx->stream[s].dma = request_au1000_dma(dmaids[s], name, in alchemy_pcm_open()
204 &ctx->stream[s]); in alchemy_pcm_open()
205 set_dma_mode(ctx->stream[s].dma, in alchemy_pcm_open()
206 get_dma_mode(ctx->stream[s].dma) & ~DMA_NC); in alchemy_pcm_open()
208 ctx->stream[s].substream = substream; in alchemy_pcm_open()
209 ctx->stream[s].buffer = NULL; in alchemy_pcm_open()
218 int stype = substream->stream; in alchemy_pcm_close()
220 ctx->stream[stype].substream = NULL; in alchemy_pcm_close()
221 free_au1000_dma(ctx->stream[stype].dma); in alchemy_pcm_close()
229 struct audio_stream *stream = ss_to_as(substream); in alchemy_pcm_hw_params() local
236 err = au1000_setup_dma_link(stream, in alchemy_pcm_hw_params()
247 struct audio_stream *stream = ss_to_as(substream); in alchemy_pcm_hw_free() local
248 au1000_release_dma_link(stream); in alchemy_pcm_hw_free()
254 struct audio_stream *stream = ss_to_as(substream); in alchemy_pcm_trigger() local
259 au1000_dma_start(stream); in alchemy_pcm_trigger()
262 au1000_dma_stop(stream); in alchemy_pcm_trigger()
273 struct audio_stream *stream = ss_to_as(ss); in alchemy_pcm_pointer() local
276 location = get_dma_residue(stream->dma); in alchemy_pcm_pointer()
277 location = stream->buffer->relative_end - location; in alchemy_pcm_pointer()