109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
/*
|
||
|
|
* Copyright 2019 NXP
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _FSL_ASRC_COMMON_H
|
||
|
|
#define _FSL_ASRC_COMMON_H
|
||
|
|
|
||
|
|
/* directions */
|
||
|
|
#define IN 0
|
||
|
|
#define OUT 1
|
||
|
|
|
||
|
|
enum asrc_pair_index {
|
||
|
|
ASRC_INVALID_PAIR = -1,
|
||
|
|
ASRC_PAIR_A = 0,
|
||
|
|
ASRC_PAIR_B = 1,
|
||
|
|
ASRC_PAIR_C = 2,
|
||
|
|
ASRC_PAIR_D = 3,
|
||
|
|
};
|
||
|
|
|
||
|
|
#define PAIR_CTX_NUM 0x4
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fsl_asrc_pair: ASRC Pair common data
|
||
|
|
*
|
||
|
|
* @asrc: pointer to its parent module
|
||
|
|
* @error: error record
|
||
|
|
* @index: pair index (ASRC_PAIR_A, ASRC_PAIR_B, ASRC_PAIR_C)
|
||
|
|
* @channels: occupied channel number
|
||
|
|
* @desc: input and output dma descriptors
|
||
|
|
* @dma_chan: inputer and output DMA channels
|
||
|
|
* @dma_data: private dma data
|
||
|
|
* @pos: hardware pointer position
|
||
|
|
* @req_dma_chan: flag to release dev_to_dev chan
|
||
|
|
* @private: pair private area
|
||
|
|
*/
|
||
|
|
struct fsl_asrc_pair {
|
||
|
|
struct fsl_asrc *asrc;
|
||
|
|
unsigned int error;
|
||
|
|
|
||
|
|
enum asrc_pair_index index;
|
||
|
|
unsigned int channels;
|
||
|
|
|
||
|
|
struct dma_async_tx_descriptor *desc[2];
|
||
|
|
struct dma_chan *dma_chan[2];
|
||
|
|
struct imx_dma_data dma_data;
|
||
|
|
unsigned int pos;
|
||
|
|
bool req_dma_chan;
|
||
|
|
|
||
|
|
void *private;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fsl_asrc: ASRC common data
|
||
|
|
*
|
||
|
|
* @dma_params_rx: DMA parameters for receive channel
|
||
|
|
* @dma_params_tx: DMA parameters for transmit channel
|
||
|
|
* @pdev: platform device pointer
|
||
|
|
* @regmap: regmap handler
|
||
|
|
* @paddr: physical address to the base address of registers
|
||
|
|
* @mem_clk: clock source to access register
|
||
|
|
* @ipg_clk: clock source to drive peripheral
|
||
|
|
* @spba_clk: SPBA clock (optional, depending on SoC design)
|
||
|
|
* @lock: spin lock for resource protection
|
||
|
|
* @pair: pair pointers
|
||
|
|
* @channel_avail: non-occupied channel numbers
|
||
|
|
* @asrc_rate: default sample rate for ASoC Back-Ends
|
||
|
|
* @asrc_format: default sample format for ASoC Back-Ends
|
||
|
|
* @use_edma: edma is used
|
||
|
|
* @get_dma_channel: function pointer
|
||
|
|
* @request_pair: function pointer
|
||
|
|
* @release_pair: function pointer
|
||
|
|
* @get_fifo_addr: function pointer
|
||
|
|
* @pair_priv_size: size of pair private struct.
|
||
|
|
* @private: private data structure
|
||
|
|
*/
|
||
|
|
struct fsl_asrc {
|
||
|
|
struct snd_dmaengine_dai_dma_data dma_params_rx;
|
||
|
|
struct snd_dmaengine_dai_dma_data dma_params_tx;
|
||
|
|
struct platform_device *pdev;
|
||
|
|
struct regmap *regmap;
|
||
|
|
unsigned long paddr;
|
||
|
|
struct clk *mem_clk;
|
||
|
|
struct clk *ipg_clk;
|
||
|
|
struct clk *spba_clk;
|
||
|
|
spinlock_t lock; /* spin lock for resource protection */
|
||
|
|
|
||
|
|
struct fsl_asrc_pair *pair[PAIR_CTX_NUM];
|
||
|
|
unsigned int channel_avail;
|
||
|
|
|
||
|
|
int asrc_rate;
|
||
|
|
snd_pcm_format_t asrc_format;
|
||
|
|
bool use_edma;
|
||
|
|
|
||
|
|
struct dma_chan *(*get_dma_channel)(struct fsl_asrc_pair *pair, bool dir);
|
||
|
|
int (*request_pair)(int channels, struct fsl_asrc_pair *pair);
|
||
|
|
void (*release_pair)(struct fsl_asrc_pair *pair);
|
||
|
|
int (*get_fifo_addr)(u8 dir, enum asrc_pair_index index);
|
||
|
|
size_t pair_priv_size;
|
||
|
|
|
||
|
|
void *private;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define DRV_NAME "fsl-asrc-dai"
|
||
|
|
extern struct snd_soc_component_driver fsl_asrc_component;
|
||
|
|
|
||
|
|
#endif /* _FSL_ASRC_COMMON_H */
|