1 /* SPDX-License-Identifier: GPL-2.0 */
7 #ifndef _FSL_ASRC_COMMON_H
8 #define _FSL_ASRC_COMMON_H
14 enum asrc_pair_index {
15 ASRC_INVALID_PAIR = -1,
22 #define PAIR_CTX_NUM 0x4
25 * fsl_asrc_pair: ASRC Pair common data
27 * @asrc: pointer to its parent module
28 * @error: error record
29 * @index: pair index (ASRC_PAIR_A, ASRC_PAIR_B, ASRC_PAIR_C)
30 * @channels: occupied channel number
31 * @desc: input and output dma descriptors
32 * @dma_chan: inputer and output DMA channels
33 * @dma_data: private dma data
34 * @pos: hardware pointer position
35 * @private: pair private area
37 struct fsl_asrc_pair {
38 struct fsl_asrc *asrc;
41 enum asrc_pair_index index;
42 unsigned int channels;
44 struct dma_async_tx_descriptor *desc[2];
45 struct dma_chan *dma_chan[2];
46 struct imx_dma_data dma_data;
53 * fsl_asrc: ASRC common data
55 * @dma_params_rx: DMA parameters for receive channel
56 * @dma_params_tx: DMA parameters for transmit channel
57 * @pdev: platform device pointer
58 * @regmap: regmap handler
59 * @paddr: physical address to the base address of registers
60 * @mem_clk: clock source to access register
61 * @ipg_clk: clock source to drive peripheral
62 * @spba_clk: SPBA clock (optional, depending on SoC design)
63 * @lock: spin lock for resource protection
64 * @pair: pair pointers
65 * @channel_avail: non-occupied channel numbers
66 * @asrc_rate: default sample rate for ASoC Back-Ends
67 * @asrc_format: default sample format for ASoC Back-Ends
68 * @use_edma: edma is used
69 * @get_dma_channel: function pointer
70 * @request_pair: function pointer
71 * @release_pair: function pointer
72 * @get_fifo_addr: function pointer
73 * @pair_priv_size: size of pair private struct.
74 * @private: private data structure
77 struct snd_dmaengine_dai_dma_data dma_params_rx;
78 struct snd_dmaengine_dai_dma_data dma_params_tx;
79 struct platform_device *pdev;
80 struct regmap *regmap;
85 spinlock_t lock; /* spin lock for resource protection */
87 struct fsl_asrc_pair *pair[PAIR_CTX_NUM];
88 unsigned int channel_avail;
91 snd_pcm_format_t asrc_format;
94 struct dma_chan *(*get_dma_channel)(struct fsl_asrc_pair *pair, bool dir);
95 int (*request_pair)(int channels, struct fsl_asrc_pair *pair);
96 void (*release_pair)(struct fsl_asrc_pair *pair);
97 int (*get_fifo_addr)(u8 dir, enum asrc_pair_index index);
98 size_t pair_priv_size;
103 #define DRV_NAME "fsl-asrc-dai"
104 extern struct snd_soc_component_driver fsl_asrc_component;
106 #endif /* _FSL_ASRC_COMMON_H */