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Diffstat (limited to 'sound/soc/fsl/mpc5200_dma.h')
-rw-r--r--sound/soc/fsl/mpc5200_dma.h24
1 files changed, 16 insertions, 8 deletions
diff --git a/sound/soc/fsl/mpc5200_dma.h b/sound/soc/fsl/mpc5200_dma.h
index 8d396bb9d9f..22208b373fb 100644
--- a/sound/soc/fsl/mpc5200_dma.h
+++ b/sound/soc/fsl/mpc5200_dma.h
@@ -13,26 +13,25 @@
* @psc_dma: pointer back to parent psc_dma data structure
* @bcom_task: bestcomm task structure
* @irq: irq number for bestcomm task
- * @period_start: physical address of start of DMA region
* @period_end: physical address of end of DMA region
* @period_next_pt: physical address of next DMA buffer to enqueue
* @period_bytes: size of DMA period in bytes
+ * @ac97_slot_bits: Enable bits for turning on the correct AC97 slot
*/
struct psc_dma_stream {
struct snd_pcm_runtime *runtime;
- snd_pcm_uframes_t appl_ptr;
-
int active;
struct psc_dma *psc_dma;
struct bcom_task *bcom_task;
int irq;
struct snd_pcm_substream *stream;
- dma_addr_t period_start;
- dma_addr_t period_end;
- dma_addr_t period_next_pt;
- dma_addr_t period_current_pt;
+ int period_next;
+ int period_current;
int period_bytes;
- int period_size;
+ int period_count;
+
+ /* AC97 state */
+ u32 ac97_slot_bits;
};
/**
@@ -73,6 +72,15 @@ struct psc_dma {
} stats;
};
+/* Utility for retrieving psc_dma_stream structure from a substream */
+inline struct psc_dma_stream *
+to_psc_dma_stream(struct snd_pcm_substream *substream, struct psc_dma *psc_dma)
+{
+ if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
+ return &psc_dma->capture;
+ return &psc_dma->playback;
+}
+
int mpc5200_audio_dma_create(struct of_device *op);
int mpc5200_audio_dma_destroy(struct of_device *op);