root/sound/soc/sprd/sprd-pcm-dma.h

INCLUDED FROM

   1 // SPDX-License-Identifier: GPL-2.0
   2 
   3 #ifndef __SPRD_PCM_DMA_H
   4 #define __SPRD_PCM_DMA_H
   5 
   6 #define DRV_NAME                "sprd_pcm_dma"
   7 #define SPRD_PCM_CHANNEL_MAX    2
   8 
   9 extern const struct snd_compr_ops sprd_platform_compr_ops;
  10 
  11 struct sprd_pcm_dma_params {
  12         dma_addr_t dev_phys[SPRD_PCM_CHANNEL_MAX];
  13         u32 datawidth[SPRD_PCM_CHANNEL_MAX];
  14         u32 fragment_len[SPRD_PCM_CHANNEL_MAX];
  15         const char *chan_name[SPRD_PCM_CHANNEL_MAX];
  16 };
  17 
  18 struct sprd_compr_playinfo {
  19         int total_time;
  20         int current_time;
  21         int total_data_length;
  22         int current_data_offset;
  23 };
  24 
  25 struct sprd_compr_params {
  26         u32 direction;
  27         u32 rate;
  28         u32 sample_rate;
  29         u32 channels;
  30         u32 format;
  31         u32 period;
  32         u32 periods;
  33         u32 info_phys;
  34         u32 info_size;
  35 };
  36 
  37 struct sprd_compr_callback {
  38         void (*drain_notify)(void *data);
  39         void *drain_data;
  40 };
  41 
  42 struct sprd_compr_ops {
  43         int (*open)(int str_id, struct sprd_compr_callback *cb);
  44         int (*close)(int str_id);
  45         int (*start)(int str_id);
  46         int (*stop)(int str_id);
  47         int (*pause)(int str_id);
  48         int (*pause_release)(int str_id);
  49         int (*drain)(int received_total);
  50         int (*set_params)(int str_id, struct sprd_compr_params *params);
  51 };
  52 
  53 struct sprd_compr_data {
  54         struct sprd_compr_ops *ops;
  55         struct sprd_pcm_dma_params *dma_params;
  56 };
  57 
  58 #endif /* __SPRD_PCM_DMA_H */