3  * atmel-pcm.c  --  ALSA PCM interface for the Atmel atmel SoC.
10  * Based on at91-pcm. by:
14  * Based on pxa2xx-pcm.c by:
30 #include <sound/pcm.h>
34 #include "atmel-pcm.h"
37 static int atmel_pcm_preallocate_dma_buffer(struct snd_pcm *pcm,  in atmel_pcm_preallocate_dma_buffer()  argument
40 	struct snd_pcm_substream *substream = pcm->streams[stream].substream;  in atmel_pcm_preallocate_dma_buffer()
45 	buf->dev.dev = pcm->card->dev;  in atmel_pcm_preallocate_dma_buffer()
47 	buf->area = dma_alloc_coherent(pcm->card->dev, size,  in atmel_pcm_preallocate_dma_buffer()
49 	pr_debug("atmel-pcm: alloc dma buffer: area=%p, addr=%p, size=%zu\n",  in atmel_pcm_preallocate_dma_buffer()
72 	struct snd_pcm *pcm = rtd->pcm;  in atmel_pcm_new()  local
79 	if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {  in atmel_pcm_new()
80 		pr_debug("atmel-pcm: allocating PCM playback DMA buffer\n");  in atmel_pcm_new()
81 		ret = atmel_pcm_preallocate_dma_buffer(pcm,  in atmel_pcm_new()
87 	if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {  in atmel_pcm_new()
88 		pr_debug("atmel-pcm: allocating PCM capture DMA buffer\n");  in atmel_pcm_new()
89 		ret = atmel_pcm_preallocate_dma_buffer(pcm,  in atmel_pcm_new()
99 			   struct snd_pcm *pcm)  in atmel_pcm_free()  argument
106 		substream = pcm->streams[stream].substream;  in atmel_pcm_free()
113 		dma_free_coherent(pcm->card->dev, buf->bytes,  in atmel_pcm_free()
163 		pr_warn("atmel-pcm: buffer %s on %s (SSC_SR=%#x, count=%d)\n",  in atmel_pcm_dma_irq()
200  * PCM operations
223 	pr_debug("atmel-pcm: "  in atmel_pcm_hw_params()
268 	pr_debug("atmel-pcm:buffer_size = %ld,"  in atmel_pcm_trigger()
287 		pr_debug("atmel-pcm: trigger: "  in atmel_pcm_trigger()
400 MODULE_DESCRIPTION("Atmel PCM module");