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Commit | Line | Data |
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89dd0842 JS |
1 | /* |
2 | * Freescale MPC5200 Audio DMA driver | |
3 | */ | |
4 | ||
5 | #ifndef __SOUND_SOC_FSL_MPC5200_DMA_H__ | |
6 | #define __SOUND_SOC_FSL_MPC5200_DMA_H__ | |
7 | ||
dbcc3475 JS |
8 | #define PSC_STREAM_NAME_LEN 32 |
9 | ||
89dd0842 | 10 | /** |
dbcc3475 | 11 | * psc_ac97_stream - Data specific to a single stream (playback or capture) |
89dd0842 | 12 | * @active: flag indicating if the stream is active |
cebe7767 | 13 | * @psc_dma: pointer back to parent psc_dma data structure |
89dd0842 JS |
14 | * @bcom_task: bestcomm task structure |
15 | * @irq: irq number for bestcomm task | |
89dd0842 JS |
16 | * @period_end: physical address of end of DMA region |
17 | * @period_next_pt: physical address of next DMA buffer to enqueue | |
18 | * @period_bytes: size of DMA period in bytes | |
19 | */ | |
cebe7767 | 20 | struct psc_dma_stream { |
dbcc3475 | 21 | struct snd_pcm_runtime *runtime; |
89dd0842 | 22 | int active; |
cebe7767 | 23 | struct psc_dma *psc_dma; |
89dd0842 JS |
24 | struct bcom_task *bcom_task; |
25 | int irq; | |
26 | struct snd_pcm_substream *stream; | |
8f159d72 GL |
27 | int period_next; |
28 | int period_current; | |
89dd0842 | 29 | int period_bytes; |
c4878274 | 30 | int period_count; |
89dd0842 JS |
31 | }; |
32 | ||
33 | /** | |
cebe7767 | 34 | * psc_dma - Private driver data |
89dd0842 JS |
35 | * @name: short name for this device ("PSC0", "PSC1", etc) |
36 | * @psc_regs: pointer to the PSC's registers | |
37 | * @fifo_regs: pointer to the PSC's FIFO registers | |
38 | * @irq: IRQ of this PSC | |
39 | * @dev: struct device pointer | |
40 | * @dai: the CPU DAI for this device | |
41 | * @sicr: Base value used in serial interface control register; mode is ORed | |
42 | * with this value. | |
43 | * @playback: Playback stream context data | |
44 | * @capture: Capture stream context data | |
45 | */ | |
cebe7767 | 46 | struct psc_dma { |
89dd0842 JS |
47 | char name[32]; |
48 | struct mpc52xx_psc __iomem *psc_regs; | |
49 | struct mpc52xx_psc_fifo __iomem *fifo_regs; | |
50 | unsigned int irq; | |
51 | struct device *dev; | |
89dd0842 | 52 | spinlock_t lock; |
0827d6ba | 53 | struct mutex mutex; |
89dd0842 | 54 | u32 sicr; |
dbcc3475 JS |
55 | uint sysclk; |
56 | int imr; | |
57 | int id; | |
58 | unsigned int slots; | |
89dd0842 JS |
59 | |
60 | /* per-stream data */ | |
cebe7767 JS |
61 | struct psc_dma_stream playback; |
62 | struct psc_dma_stream capture; | |
89dd0842 JS |
63 | |
64 | /* Statistics */ | |
65 | struct { | |
dbcc3475 JS |
66 | unsigned long overrun_count; |
67 | unsigned long underrun_count; | |
89dd0842 JS |
68 | } stats; |
69 | }; | |
70 | ||
dbcc3475 JS |
71 | int mpc5200_audio_dma_create(struct of_device *op); |
72 | int mpc5200_audio_dma_destroy(struct of_device *op); | |
89dd0842 | 73 | |
dbcc3475 | 74 | extern struct snd_soc_platform mpc5200_audio_dma_platform; |
89dd0842 JS |
75 | |
76 | #endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */ |