diff options
Diffstat (limited to 'sound/soc/atmel/atmel-pcm.h')
| -rw-r--r-- | sound/soc/atmel/atmel-pcm.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sound/soc/atmel/atmel-pcm.h b/sound/soc/atmel/atmel-pcm.h index 5e0a95e64329..bb45d20e7250 100644 --- a/sound/soc/atmel/atmel-pcm.h +++ b/sound/soc/atmel/atmel-pcm.h @@ -36,6 +36,8 @@ #include <linux/atmel-ssc.h> +#define ATMEL_SSC_DMABUF_SIZE (64 * 1024) + /* * Registers and status bits that are required by the PCM driver. */ @@ -50,6 +52,7 @@ struct atmel_pdc_regs { struct atmel_ssc_mask { u32 ssc_enable; /* SSC recv/trans enable */ u32 ssc_disable; /* SSC recv/trans disable */ + u32 ssc_error; /* SSC error conditions */ u32 ssc_endx; /* SSC ENDTX or ENDRX */ u32 ssc_endbuf; /* SSC TXBUFE or RXBUFF */ u32 pdc_enable; /* PDC recv/trans enable */ @@ -80,4 +83,35 @@ struct atmel_pcm_dma_params { #define ssc_readx(base, reg) (__raw_readl((base) + (reg))) #define ssc_writex(base, reg, value) __raw_writel((value), (base) + (reg)) +int atmel_pcm_new(struct snd_soc_pcm_runtime *rtd); +void atmel_pcm_free(struct snd_pcm *pcm); +int atmel_pcm_mmap(struct snd_pcm_substream *substream, + struct vm_area_struct *vma); + +#ifdef CONFIG_SND_ATMEL_SOC_PDC +int atmel_pcm_pdc_platform_register(struct device *dev); +void atmel_pcm_pdc_platform_unregister(struct device *dev); +#else +static inline int atmel_pcm_pdc_platform_register(struct device *dev) +{ + return 0; +} +static inline void atmel_pcm_pdc_platform_unregister(struct device *dev) +{ +} +#endif + +#ifdef CONFIG_SND_ATMEL_SOC_DMA +int atmel_pcm_dma_platform_register(struct device *dev); +void atmel_pcm_dma_platform_unregister(struct device *dev); +#else +static inline int atmel_pcm_dma_platform_register(struct device *dev) +{ + return 0; +} +static inline void atmel_pcm_dma_platform_unregister(struct device *dev) +{ +} +#endif + #endif /* _ATMEL_PCM_H */ |