/* * Freescale MPC5200 Audio DMA driver */ #ifndef __SOUND_SOC_FSL_MPC5200_DMA_H__ #define __SOUND_SOC_FSL_MPC5200_DMA_H__ #define PSC_STREAM_NAME_LEN 32 /** * 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 * @irq: irq number for bestcomm task * @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; int active; struct psc_dma *psc_dma; struct bcom_task *bcom_task; int irq; struct snd_pcm_substream *stream; int period_next; int period_current; int period_bytes; int period_count; /* AC97 state */ u32 ac97_slot_bits; }; /** * psc_dma - Private driver data * @name: short name for this device ("PSC0", "PSC1", etc) * @psc_regs: pointer to the PSC's registers * @fifo_regs: pointer to the PSC's FIFO registers * @irq: IRQ of this PSC * @dev: struct device pointer * @dai: the CPU DAI for this device * @sicr: Base value used in serial interface control register; mode is ORed * with this value. * @playback: Playback stream context data * @capture: Capture stream context data */ struct psc_dma { char name[32]; struct mpc52xx_psc __iomem *psc_regs; struct mpc52xx_psc_fifo __iomem *fifo_regs; unsigned int irq; struct device *dev; spinlock_t lock; struct mutex mutex; u32 sicr; uint sysclk; int imr; int id; unsigned int slots; /* per-stream data */ struct psc_dma_stream playback; struct psc_dma_stream capture; /* Statistics */ struct { unsigned long overrun_count; unsigned long underrun_count; } stats; }; /* Utility for retrieving psc_dma_stream structure from a substream */
static 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; }Contributors
| Person | Tokens | Prop | Commits | CommitProp | |
| grant likely | grant likely | 41 | 100.00% | 2 | 100.00% |
| Total | 41 | 100.00% | 2 | 100.00% |
| Person | Tokens | Prop | Commits | CommitProp | |
| jon smirl | jon smirl | 125 | 62.19% | 3 | 30.00% |
| grant likely | grant likely | 58 | 28.86% | 6 | 60.00% |
| eric millbrandt | eric millbrandt | 18 | 8.96% | 1 | 10.00% |
| Total | 201 | 100.00% | 10 | 100.00% |