ASoC: Main rewite of the mpc5200 audio DMA code

Rewrite the mpc5200 audio DMA code to support both I2S and AC97.
Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/fsl/Kconfig

@@ -25,7 +25,6 @@ config SND_SOC_MPC8610_HPCD
 config SND_SOC_MPC5200_I2S
 	tristate "Freescale MPC5200 PSC in I2S mode driver"
 	depends on PPC_MPC52xx && PPC_BESTCOMM
-	select SND_SOC_OF_SIMPLE
 	select SND_MPC52xx_DMA
 	select PPC_BESTCOMM_GEN_BD
 	help

sound/soc/fsl/mpc5200_dma.h

@@ -5,8 +5,10 @@
 #ifndef __SOUND_SOC_FSL_MPC5200_DMA_H__
 #define __SOUND_SOC_FSL_MPC5200_DMA_H__
 
+#define PSC_STREAM_NAME_LEN 32
+
 /**
- * psc_dma_stream - Data specific to a single stream (playback or capture)
+ * psc_ac97_stream - Data specific to a single stream (playback or capture)
  * @active:		flag indicating if the stream is active
  * @psc_dma:		pointer back to parent psc_dma data structure
  * @bcom_task:		bestcomm task structure
@@ -17,6 +19,9 @@
  * @period_bytes:	size of DMA period in bytes
  */
 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;
@@ -27,6 +32,7 @@ struct psc_dma_stream {
 	dma_addr_t period_next_pt;
 	dma_addr_t period_current_pt;
 	int period_bytes;
+	int period_size;
 };
 
 /**
@@ -48,9 +54,12 @@ struct psc_dma {
 	struct mpc52xx_psc_fifo __iomem *fifo_regs;
 	unsigned int irq;
 	struct device *dev;
-	struct snd_soc_dai dai;
 	spinlock_t lock;
 	u32 sicr;
+	uint sysclk;
+	int imr;
+	int id;
+	unsigned int slots;
 
 	/* per-stream data */
 	struct psc_dma_stream playback;
@@ -58,24 +67,14 @@ struct psc_dma {
 
 	/* Statistics */
 	struct {
-		int overrun_count;
-		int underrun_count;
+		unsigned long overrun_count;
+		unsigned long underrun_count;
 	} stats;
 };
 
+int mpc5200_audio_dma_create(struct of_device *op);
+int mpc5200_audio_dma_destroy(struct of_device *op);
 
-int psc_dma_startup(struct snd_pcm_substream *substream,
-			   struct snd_soc_dai *dai);
-
-int psc_dma_hw_free(struct snd_pcm_substream *substream,
-			   struct snd_soc_dai *dai);
-
-void psc_dma_shutdown(struct snd_pcm_substream *substream,
-			     struct snd_soc_dai *dai);
-
-int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
-			   struct snd_soc_dai *dai);
-
-extern struct snd_soc_platform psc_dma_pcm_soc_platform;
+extern struct snd_soc_platform mpc5200_audio_dma_platform;
 
 #endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */

sound/soc/fsl/mpc5200_psc_i2s.h

+/*
+ * Freescale MPC5200 PSC in I2S mode
+ * ALSA SoC Digital Audio Interface (DAI) driver
+ *
+ */
+
+#ifndef __SOUND_SOC_FSL_MPC52xx_PSC_I2S_H__
+#define __SOUND_SOC_FSL_MPC52xx_PSC_I2S_H__
+
+extern struct snd_soc_dai psc_i2s_dai[];
+
+#endif /* __SOUND_SOC_FSL_MPC52xx_PSC_I2S_H__ */