1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright 2019 NXP 4 * 5 */ 6 7 #ifndef _FSL_ASRC_COMMON_H 8 #define _FSL_ASRC_COMMON_H 9 10 /* directions */ 11 #define IN 0 12 #define OUT 1 13 14 enum asrc_pair_index { 15 ASRC_INVALID_PAIR = -1, 16 ASRC_PAIR_A = 0, 17 ASRC_PAIR_B = 1, 18 ASRC_PAIR_C = 2, 19 ASRC_PAIR_D = 3, 20 }; 21 22 #define PAIR_CTX_NUM 0x4 23 24 /** 25 * struct fsl_asrc_m2m_cap - capability data 26 * @fmt_in: input sample format 27 * @fmt_out: output sample format 28 * @chan_min: minimum channel number 29 * @chan_max: maximum channel number 30 * @rate_in: minimum rate 31 * @rate_out: maximum rete 32 */ 33 struct fsl_asrc_m2m_cap { 34 u64 fmt_in; 35 u64 fmt_out; 36 int chan_min; 37 int chan_max; 38 const unsigned int *rate_in; 39 int rate_in_count; 40 const unsigned int *rate_out; 41 int rate_out_count; 42 }; 43 44 /** 45 * fsl_asrc_pair: ASRC Pair common data 46 * 47 * @asrc: pointer to its parent module 48 * @error: error record 49 * @index: pair index (ASRC_PAIR_A, ASRC_PAIR_B, ASRC_PAIR_C) 50 * @channels: occupied channel number 51 * @desc: input and output dma descriptors 52 * @dma_chan: inputer and output DMA channels 53 * @dma_data: private dma data 54 * @pos: hardware pointer position 55 * @req_dma_chan: flag to release dev_to_dev chan 56 * @private: pair private area 57 * @complete: dma task complete 58 * @sample_format: format of m2m 59 * @rate: rate of m2m 60 * @buf_len: buffer length of m2m 61 * @dma_buffer: buffer pointers 62 * @first_convert: start of conversion 63 * @ratio_mod_flag: flag for new ratio modifier 64 * @ratio_mod: ratio modification 65 */ 66 struct fsl_asrc_pair { 67 struct fsl_asrc *asrc; 68 unsigned int error; 69 70 enum asrc_pair_index index; 71 unsigned int channels; 72 73 struct dma_async_tx_descriptor *desc[2]; 74 struct dma_chan *dma_chan[2]; 75 struct imx_dma_data dma_data; 76 unsigned int pos; 77 bool req_dma_chan; 78 79 void *private; 80 81 /* used for m2m */ 82 struct completion complete[2]; 83 snd_pcm_format_t sample_format[2]; 84 unsigned int rate[2]; 85 unsigned int buf_len[2]; 86 struct snd_dma_buffer dma_buffer[2]; 87 unsigned int first_convert; 88 bool ratio_mod_flag; 89 unsigned int ratio_mod; 90 }; 91 92 /** 93 * fsl_asrc: ASRC common data 94 * 95 * @dma_params_rx: DMA parameters for receive channel 96 * @dma_params_tx: DMA parameters for transmit channel 97 * @pdev: platform device pointer 98 * @regmap: regmap handler 99 * @paddr: physical address to the base address of registers 100 * @mem_clk: clock source to access register 101 * @ipg_clk: clock source to drive peripheral 102 * @spba_clk: SPBA clock (optional, depending on SoC design) 103 * @card: compress sound card 104 * @lock: spin lock for resource protection 105 * @pair: pair pointers 106 * @channel_avail: non-occupied channel numbers 107 * @asrc_rate: default sample rate for ASoC Back-Ends 108 * @asrc_format: default sample format for ASoC Back-Ends 109 * @use_edma: edma is used 110 * @get_dma_channel: function pointer 111 * @request_pair: function pointer 112 * @release_pair: function pointer 113 * @get_fifo_addr: function pointer 114 * @m2m_get_cap: function pointer 115 * @m2m_prepare: function pointer 116 * @m2m_start: function pointer 117 * @m2m_unprepare: function pointer 118 * @m2m_stop: function pointer 119 * @m2m_calc_out_len: function pointer 120 * @m2m_get_maxburst: function pointer 121 * @m2m_pair_suspend: function pointer 122 * @m2m_pair_resume: function pointer 123 * @m2m_set_ratio_mod: function pointer 124 * @get_output_fifo_size: function pointer 125 * @pair_priv_size: size of pair private struct. 126 * @private: private data structure 127 */ 128 struct fsl_asrc { 129 struct snd_dmaengine_dai_dma_data dma_params_rx; 130 struct snd_dmaengine_dai_dma_data dma_params_tx; 131 struct platform_device *pdev; 132 struct regmap *regmap; 133 unsigned long paddr; 134 struct clk *mem_clk; 135 struct clk *ipg_clk; 136 struct clk *spba_clk; 137 struct snd_card *card; 138 spinlock_t lock; /* spin lock for resource protection */ 139 140 struct fsl_asrc_pair *pair[PAIR_CTX_NUM]; 141 unsigned int channel_avail; 142 143 int asrc_rate; 144 snd_pcm_format_t asrc_format; 145 bool use_edma; 146 147 struct dma_chan *(*get_dma_channel)(struct fsl_asrc_pair *pair, bool dir); 148 int (*request_pair)(int channels, struct fsl_asrc_pair *pair); 149 void (*release_pair)(struct fsl_asrc_pair *pair); 150 int (*get_fifo_addr)(u8 dir, enum asrc_pair_index index); 151 int (*m2m_get_cap)(struct fsl_asrc_m2m_cap *cap); 152 153 int (*m2m_prepare)(struct fsl_asrc_pair *pair); 154 int (*m2m_start)(struct fsl_asrc_pair *pair); 155 int (*m2m_unprepare)(struct fsl_asrc_pair *pair); 156 int (*m2m_stop)(struct fsl_asrc_pair *pair); 157 158 int (*m2m_calc_out_len)(struct fsl_asrc_pair *pair, int input_buffer_length); 159 int (*m2m_get_maxburst)(u8 dir, struct fsl_asrc_pair *pair); 160 int (*m2m_pair_suspend)(struct fsl_asrc_pair *pair); 161 int (*m2m_pair_resume)(struct fsl_asrc_pair *pair); 162 int (*m2m_set_ratio_mod)(struct fsl_asrc_pair *pair, int val); 163 164 unsigned int (*get_output_fifo_size)(struct fsl_asrc_pair *pair); 165 size_t pair_priv_size; 166 167 void *private; 168 }; 169 170 #define DRV_NAME "fsl-asrc-dai" 171 extern struct snd_soc_component_driver fsl_asrc_component; 172 173 int fsl_asrc_m2m_init(struct fsl_asrc *asrc); 174 void fsl_asrc_m2m_exit(struct fsl_asrc *asrc); 175 int fsl_asrc_m2m_resume(struct fsl_asrc *asrc); 176 int fsl_asrc_m2m_suspend(struct fsl_asrc *asrc); 177 178 #endif /* _FSL_ASRC_COMMON_H */ 179