/* SPDX-License-Identifier: GPL-2.0 */ /* * fsl_asrc.h - Freescale ASRC ALSA SoC header file * * Copyright (C) 2014 Freescale Semiconductor, Inc. * * Author: Nicolin Chen */ #ifndef _FSL_ASRC_H #define _FSL_ASRC_H #define IN 0 #define OUT 1 #define ASRC_DMA_BUFFER_NUM 2 #define ASRC_INPUTFIFO_THRESHOLD 32 #define ASRC_OUTPUTFIFO_THRESHOLD 32 #define ASRC_FIFO_THRESHOLD_MIN 0 #define ASRC_FIFO_THRESHOLD_MAX 63 #define ASRC_DMA_BUFFER_SIZE (1024 * 48 * 4) #define ASRC_MAX_BUFFER_SIZE (1024 * 48) #define ASRC_OUTPUT_LAST_SAMPLE 8 #define IDEAL_RATIO_RATE 1000000 #define REG_ASRCTR 0x00 #define REG_ASRIER 0x04 #define REG_ASRCNCR 0x0C #define REG_ASRCFG 0x10 #define REG_ASRCSR 0x14 #define REG_ASRCDR1 0x18 #define REG_ASRCDR2 0x1C #define REG_ASRCDR(i) ((i < 2) ? REG_ASRCDR1 : REG_ASRCDR2) #define REG_ASRSTR 0x20 #define REG_ASRRA 0x24 #define REG_ASRRB 0x28 #define REG_ASRRC 0x2C #define REG_ASRPM1 0x40 #define REG_ASRPM2 0x44 #define REG_ASRPM3 0x48 #define REG_ASRPM4 0x4C #define REG_ASRPM5 0x50 #define REG_ASRTFR1 0x54 #define REG_ASRCCR 0x5C #define REG_ASRDIA 0x60 #define REG_ASRDOA 0x64 #define REG_ASRDIB 0x68 #define REG_ASRDOB 0x6C #define REG_ASRDIC 0x70 #define REG_ASRDOC 0x74 #define REG_ASRDI(i) (REG_ASRDIA + (i << 3)) #define REG_ASRDO(i) (REG_ASRDOA + (i << 3)) #define REG_ASRDx(x, i) ((x) == IN ? REG_ASRDI(i) : REG_ASRDO(i)) #define REG_ASRIDRHA 0x80 #define REG_ASRIDRLA 0x84 #define REG_ASRIDRHB 0x88 #define REG_ASRIDRLB 0x8C #define REG_ASRIDRHC 0x90 #define REG_ASRIDRLC 0x94 #define REG_ASRIDRH(i) (REG_ASRIDRHA + (i << 3)) #define REG_ASRIDRL(i) (REG_ASRIDRLA + (i << 3)) #define REG_ASR76K 0x98 #define REG_ASR56K 0x9C #define REG_ASRMCRA 0xA0 #define REG_ASRFSTA 0xA4 #define REG_ASRMCRB 0xA8 #define REG_ASRFSTB 0xAC #define REG_ASRMCRC 0xB0 #define REG_ASRFSTC 0xB4 #define REG_ASRMCR(i) (REG_ASRMCRA + (i << 3)) #define REG_ASRFST(i) (REG_ASRFSTA + (i << 3)) #define REG_ASRMCR1A 0xC0 #define REG_ASRMCR1B 0xC4 #define REG_ASRMCR1C 0xC8 #define REG_ASRMCR1(i) (REG_ASRMCR1A + (i << 2)) /* REG0 0x00 REG_ASRCTR */ #define ASRCTR_ATSi_SHIFT(i) (20 + i) #define ASRCTR_ATSi_MASK(i) (1 << ASRCTR_ATSi_SHIFT(i)) #define ASRCTR_ATS(i) (1 << ASRCTR_ATSi_SHIFT(i)) #define ASRCTR_USRi_SHIFT(i) (14 + (i << 1)) #define ASRCTR_USRi_MASK(i) (1 << ASRCTR_USRi_SHIFT(i)) #define ASRCTR_USR(i) (1 << ASRCTR_USRi_SHIFT(i)) #define ASRCTR_IDRi_SHIFT(i) (13 + (i << 1)) #define ASRCTR_IDRi_MASK(i) (1 << ASRCTR_IDRi_SHIFT(i)) #define ASRCTR_IDR(i) (1 << ASRCTR_IDRi_SHIFT(i)) #define ASRCTR_SRST_SHIFT 4 #define ASRCTR_SRST_MASK (1 << ASRCTR_SRST_SHIFT) #define ASRCTR_SRST (1 << ASRCTR_SRST_SHIFT) #define ASRCTR_ASRCEi_SHIFT(i) (1 + i) #define ASRCTR_ASRCEi_MASK(i) (1 << ASRCTR_ASRCEi_SHIFT(i)) #define ASRCTR_ASRCE(i) (1 << ASRCTR_ASRCEi_SHIFT(i)) #define ASRCTR_ASRCEi_ALL_MASK (0x7 << ASRCTR_ASRCEi_SHIFT(0)) #define ASRCTR_ASRCEN_SHIFT 0 #define ASRCTR_ASRCEN_MASK (1 << ASRCTR_ASRCEN_SHIFT) #define ASRCTR_ASRCEN (1 << ASRCTR_ASRCEN_SHIFT) /* REG1 0x04 REG_ASRIER */ #define ASRIER_AFPWE_SHIFT 7 #define ASRIER_AFPWE_MASK (1 << ASRIER_AFPWE_SHIFT) #define ASRIER_AFPWE (1 << ASRIER_AFPWE_SHIFT) #define ASRIER_AOLIE_SHIFT 6 #define ASRIER_AOLIE_MASK (1 << ASRIER_AOLIE_SHIFT) #define ASRIER_AOLIE (1 << ASRIER_AOLIE_SHIFT) #define ASRIER_ADOEi_SHIFT(i) (3 + i) #define ASRIER_ADOEi_MASK(i) (1 << ASRIER_ADOEi_SHIFT(i)) #define ASRIER_ADOE(i) (1 << ASRIER_ADOEi_SHIFT(i)) #define ASRIER_ADIEi_SHIFT(i) (0 + i) #define ASRIER_ADIEi_MASK(i) (1 << ASRIER_ADIEi_SHIFT(i)) #define ASRIER_ADIE(i) (1 << ASRIER_ADIEi_SHIFT(i)) /* REG2 0x0C REG_ASRCNCR */ #define ASRCNCR_ANCi_SHIFT(i, b) (b * i) #define ASRCNCR_ANCi_MASK(i, b) (((1 << b) - 1) << ASRCNCR_ANCi_SHIFT(i, b)) #define ASRCNCR_ANCi(i, v, b) ((v << ASRCNCR_ANCi_SHIFT(i, b)) & ASRCNCR_ANCi_MASK(i, b)) /* REG3 0x10 REG_ASRCFG */ #define ASRCFG_INIRQi_SHIFT(i) (21 + i) #define ASRCFG_INIRQi_MASK(i) (1 << ASRCFG_INIRQi_SHIFT(i)) #define ASRCFG_INIRQi (1 << ASRCFG_INIRQi_SHIFT(i)) #define ASRCFG_NDPRi_SHIFT(i) (18 + i) #define ASRCFG_NDPRi_MASK(i) (1 << ASRCFG_NDPRi_SHIFT(i)) #define ASRCFG_NDPRi_ALL_SHIFT 18 #define ASRCFG_NDPRi_ALL_MASK (7 << ASRCFG_NDPRi_ALL_SHIFT) #define ASRCFG_NDPRi (1 << ASRCFG_NDPRi_SHIFT(i)) #define ASRCFG_POSTMODi_SHIFT(i) (8 + (i << 2)) #define ASRCFG_POSTMODi_WIDTH 2 #define ASRCFG_POSTMODi_MASK(i) (((1 << ASRCFG_POSTMODi_WIDTH) - 1) << ASRCFG_POSTMODi_SHIFT(i)) #define ASRCFG_POSTMODi_ALL_MASK (ASRCFG_POSTMODi_MASK(0) | ASRCFG_POSTMODi_MASK(1) | ASRCFG_POSTMODi_MASK(2)) #define ASRCFG_POSTMOD(i, v) ((v) << ASRCFG_POSTMODi_SHIFT(i)) #define ASRCFG_POSTMODi_UP(i) (0 << ASRCFG_POSTMODi_SHIFT(i)) #define ASRCFG_POSTMODi_DCON(i) (1 << ASRCFG_POSTMODi_SHIFT(i)) #define ASRCFG_POSTMODi_DOWN(i) (2 << ASRCFG_POSTMODi_SHIFT(i)) #define ASRCFG_PREMODi_SHIFT(i) (6 + (i << 2)) #define ASRCFG_PREMODi_WIDTH 2 #define ASRCFG_PREMODi_MASK(i) (((1 << ASRCFG_PREMODi_WIDTH) - 1) << ASRCFG_PREMODi_SHIFT(i)) #define ASRCFG_PREMODi_ALL_MASK (ASRCFG_PREMODi_MASK(0) | ASRCFG_PREMODi_MASK(1) | ASRCFG_PREMODi_MASK(2)) #define ASRCFG_PREMOD(i, v) ((v) << ASRCFG_PREMODi_SHIFT(i)) #define ASRCFG_PREMODi_UP(i) (0 << ASRCFG_PREMODi_SHIFT(i)) #define ASRCFG_PREMODi_DCON(i) (1 << ASRCFG_PREMODi_SHIFT(i)) #define ASRCFG_PREMODi_DOWN(i) (2 << ASRCFG_PREMODi_SHIFT(i)) #define ASRCFG_PREMODi_BYPASS(i) (3 << ASRCFG_PREMODi_SHIFT(i)) /* REG4 0x14 REG_ASRCSR */ #define ASRCSR_AxCSi_WIDTH 4 #define ASRCSR_AxCSi_MASK ((1 << ASRCSR_AxCSi_WIDTH) - 1) #define ASRCSR_AOCSi_SHIFT(i) (12 + (i << 2)) #define ASRCSR_AOCSi_MASK(i) (((1 << ASRCSR_AxCSi_WIDTH) - 1) << ASRCSR_AOCSi_SHIFT(i)) #define ASRCSR_AOCS(i, v) ((v) << ASRCSR_AOCSi_SHIFT(i)) #define ASRCSR_AICSi_SHIFT(i) (i << 2) #define ASRCSR_AICSi_MASK(i) (((1 << ASRCSR_AxCSi_WIDTH) - 1) << ASRCSR_AICSi_SHIFT(i)) #define ASRCSR_AICS(i, v) ((v) << ASRCSR_AICSi_SHIFT(i)) /* REG5&6 0x18 & 0x1C REG_ASRCDR1 & ASRCDR2 */ #define ASRCDRi_AxCPi_WIDTH 3 #define ASRCDRi_AICPi_SHIFT(i) (0 + (i % 2) * 6) #define ASRCDRi_AICPi_MASK(i) (((1 << ASRCDRi_AxCPi_WIDTH) - 1) << ASRCDRi_AICPi_SHIFT(i)) #define ASRCDRi_AICP(i, v) ((v) << ASRCDRi_AICPi_SHIFT(i)) #define ASRCDRi_AICDi_SHIFT(i) (3 + (i % 2) * 6) #define ASRCDRi_AICDi_MASK(i) (((1 << ASRCDRi_AxCPi_WIDTH) - 1) << ASRCDRi_AICDi_SHIFT(i)) #define ASRCDRi_AICD(i, v) ((v) << ASRCDRi_AICDi_SHIFT(i)) #define ASRCDRi_AOCPi_SHIFT(i) ((i < 2) ? 12 + i * 6 : 6) #define ASRCDRi_AOCPi_MASK(i) (((1 << ASRCDRi_AxCPi_WIDTH) - 1) << ASRCDRi_AOCPi_SHIFT(i)) #define ASRCDRi_AOCP(i, v) ((v) << ASRCDRi_AOCPi_SHIFT(i)) #define ASRCDRi_AOCDi_SHIFT(i) ((i < 2) ? 15 + i * 6 : 9) #define ASRCDRi_AOCDi_MASK(i) (((1 << ASRCDRi_AxCPi_WIDTH) - 1) << ASRCDRi_AOCDi_SHIFT(i)) #define ASRCDRi_AOCD(i, v) ((v) << ASRCDRi_AOCDi_SHIFT(i)) /* REG7 0x20 REG_ASRSTR */ #define ASRSTR_DSLCNT_SHIFT 21 #define ASRSTR_DSLCNT_MASK (1 << ASRSTR_DSLCNT_SHIFT) #define ASRSTR_DSLCNT (1 << ASRSTR_DSLCNT_SHIFT) #define ASRSTR_ATQOL_SHIFT 20 #define ASRSTR_ATQOL_MASK (1 << ASRSTR_ATQOL_SHIFT) #define ASRSTR_ATQOL (1 << ASRSTR_ATQOL_SHIFT) #define ASRSTR_AOOLi_SHIFT(i) (17 + i) #define ASRSTR_AOOLi_MASK(i) (1 << ASRSTR_AOOLi_SHIFT(i)) #define ASRSTR_AOOL(i) (1 << ASRSTR_AOOLi_SHIFT(i)) #define ASRSTR_AIOLi_SHIFT(i) (14 + i) #define ASRSTR_AIOLi_MASK(i) (1 << ASRSTR_AIOLi_SHIFT(i)) #define ASRSTR_AIOL(i) (1 << ASRSTR_AIOLi_SHIFT(i)) #define ASRSTR_AODOi_SHIFT(i) (11 + i) #define ASRSTR_AODOi_MASK(i) (1 << ASRSTR_AODOi_SHIFT(i)) #define ASRSTR_AODO(i) (1 << ASRSTR_AODOi_SHIFT(i)) #define ASRSTR_AIDUi_SHIFT(i) (8 + i) #define ASRSTR_AIDUi_MASK(i) (1 << ASRSTR_AIDUi_SHIFT(i)) #define ASRSTR_AIDU(i) (1 << ASRSTR_AIDUi_SHIFT(i)) #define ASRSTR_FPWT_SHIFT 7 #define ASRSTR_FPWT_MASK (1 << ASRSTR_FPWT_SHIFT) #define ASRSTR_FPWT (1 << ASRSTR_FPWT_SHIFT) #define ASRSTR_AOLE_SHIFT 6 #define ASRSTR_AOLE_MASK (1 << ASRSTR_AOLE_SHIFT) #define ASRSTR_AOLE (1 << ASRSTR_AOLE_SHIFT) #define ASRSTR_AODEi_SHIFT(i) (3 + i) #define ASRSTR_AODFi_MASK(i) (1 << ASRSTR_AODEi_SHIFT(i)) #define ASRSTR_AODF(i) (1 << ASRSTR_AODEi_SHIFT(i)) #define ASRSTR_AIDEi_SHIFT(i) (0 + i) #define ASRSTR_AIDEi_MASK(i) (1 << ASRSTR_AIDEi_SHIFT(i)) #define ASRSTR_AIDE(i) (1 << ASRSTR_AIDEi_SHIFT(i)) /* REG10 0x54 REG_ASRTFR1 */ #define ASRTFR1_TF_BASE_WIDTH 7 #define ASRTFR1_TF_BASE_SHIFT 6 #define ASRTFR1_TF_BASE_MASK (((1 << ASRTFR1_TF_BASE_WIDTH) - 1) << ASRTFR1_TF_BASE_SHIFT) #define ASRTFR1_TF_BASE(i) ((i) << ASRTFR1_TF_BASE_SHIFT) /* * REG22 0xA0 REG_ASRMCRA * REG24 0xA8 REG_ASRMCRB * REG26 0xB0 REG_ASRMCRC */ #define ASRMCRi_ZEROBUFi_SHIFT 23 #define ASRMCRi_ZEROBUFi_MASK (1 << ASRMCRi_ZEROBUFi_SHIFT) #define ASRMCRi_ZEROBUFi (1 << ASRMCRi_ZEROBUFi_SHIFT) #define ASRMCRi_EXTTHRSHi_SHIFT 22 #define ASRMCRi_EXTTHRSHi_MASK (1 << ASRMCRi_EXTTHRSHi_SHIFT) #define ASRMCRi_EXTTHRSHi (1 << ASRMCRi_EXTTHRSHi_SHIFT) #define ASRMCRi_BUFSTALLi_SHIFT 21 #define ASRMCRi_BUFSTALLi_MASK (1 << ASRMCRi_BUFSTALLi_SHIFT) #define ASRMCRi_BUFSTALLi (1 << ASRMCRi_BUFSTALLi_SHIFT) #define ASRMCRi_BYPASSPOLYi_SHIFT 20 #define ASRMCRi_BYPASSPOLYi_MASK (1 << ASRMCRi_BYPASSPOLYi_SHIFT) #define ASRMCRi_BYPASSPOLYi (1 << ASRMCRi_BYPASSPOLYi_SHIFT) #define ASRMCRi_OUTFIFO_THRESHOLD_WIDTH 6 #define ASRMCRi_OUTFIFO_THRESHOLD_SHIFT 12 #define ASRMCRi_OUTFIFO_THRESHOLD_MASK (((1 << ASRMCRi_OUTFIFO_THRESHOLD_WIDTH) - 1) << ASRMCRi_OUTFIFO_THRESHOLD_SHIFT) #define ASRMCRi_OUTFIFO_THRESHOLD(v) (((v) << ASRMCRi_OUTFIFO_THRESHOLD_SHIFT) & ASRMCRi_OUTFIFO_THRESHOLD_MASK) #define ASRMCRi_RSYNIFi_SHIFT 11 #define ASRMCRi_RSYNIFi_MASK (1 << ASRMCRi_RSYNIFi_SHIFT) #define ASRMCRi_RSYNIFi (1 << ASRMCRi_RSYNIFi_SHIFT) #define ASRMCRi_RSYNOFi_SHIFT 10 #define ASRMCRi_RSYNOFi_MASK (1 << ASRMCRi_RSYNOFi_SHIFT) #define ASRMCRi_RSYNOFi (1 << ASRMCRi_RSYNOFi_SHIFT) #define ASRMCRi_INFIFO_THRESHOLD_WIDTH 6 #define ASRMCRi_INFIFO_THRESHOLD_SHIFT 0 #define ASRMCRi_INFIFO_THRESHOLD_MASK (((1 << ASRMCRi_INFIFO_THRESHOLD_WIDTH) - 1) << ASRMCRi_INFIFO_THRESHOLD_SHIFT) #define ASRMCRi_INFIFO_THRESHOLD(v) (((v) << ASRMCRi_INFIFO_THRESHOLD_SHIFT) & ASRMCRi_INFIFO_THRESHOLD_MASK) /* * REG23 0xA4 REG_ASRFSTA * REG25 0xAC REG_ASRFSTB * REG27 0xB4 REG_ASRFSTC */ #define ASRFSTi_OAFi_SHIFT 23 #define ASRFSTi_OAFi_MASK (1 << ASRFSTi_OAFi_SHIFT) #define ASRFSTi_OAFi (1 << ASRFSTi_OAFi_SHIFT) #define ASRFSTi_OUTPUT_FIFO_WIDTH 7 #define ASRFSTi_OUTPUT_FIFO_SHIFT 12 #define ASRFSTi_OUTPUT_FIFO_MASK (((1 << ASRFSTi_OUTPUT_FIFO_WIDTH) - 1) << ASRFSTi_OUTPUT_FIFO_SHIFT) #define ASRFSTi_IAEi_SHIFT 11 #define ASRFSTi_IAEi_MASK (1 << ASRFSTi_IAEi_SHIFT) #define ASRFSTi_IAEi (1 << ASRFSTi_IAEi_SHIFT) #define ASRFSTi_INPUT_FIFO_WIDTH 7 #define ASRFSTi_INPUT_FIFO_SHIFT 0 #define ASRFSTi_INPUT_FIFO_MASK ((1 << ASRFSTi_INPUT_FIFO_WIDTH) - 1) /* REG28 0xC0 & 0xC4 & 0xC8 REG_ASRMCR1i */ #define ASRMCR1i_IWD_WIDTH 3 #define ASRMCR1i_IWD_SHIFT 9 #define ASRMCR1i_IWD_MASK (((1 << ASRMCR1i_IWD_WIDTH) - 1) << ASRMCR1i_IWD_SHIFT) #define ASRMCR1i_IWD(v) ((v) << ASRMCR1i_IWD_SHIFT) #define ASRMCR1i_IMSB_SHIFT 8 #define ASRMCR1i_IMSB_MASK (1 << ASRMCR1i_IMSB_SHIFT) #define ASRMCR1i_IMSB_MSB (1 << ASRMCR1i_IMSB_SHIFT) #define ASRMCR1i_IMSB_LSB (0 << ASRMCR1i_IMSB_SHIFT) #define ASRMCR1i_OMSB_SHIFT 2 #define ASRMCR1i_OMSB_MASK (1 << ASRMCR1i_OMSB_SHIFT) #define ASRMCR1i_OMSB_MSB (1 << ASRMCR1i_OMSB_SHIFT) #define ASRMCR1i_OMSB_LSB (0 << ASRMCR1i_OMSB_SHIFT) #define ASRMCR1i_OSGN_SHIFT 1 #define ASRMCR1i_OSGN_MASK (1 << ASRMCR1i_OSGN_SHIFT) #define ASRMCR1i_OSGN (1 << ASRMCR1i_OSGN_SHIFT) #define ASRMCR1i_OW16_SHIFT 0 #define ASRMCR1i_OW16_MASK (1 << ASRMCR1i_OW16_SHIFT) #define ASRMCR1i_OW16(v) ((v) << ASRMCR1i_OW16_SHIFT) enum asrc_pair_index { ASRC_INVALID_PAIR = -1, ASRC_PAIR_A = 0, ASRC_PAIR_B = 1, ASRC_PAIR_C = 2, }; #define ASRC_PAIR_MAX_NUM (ASRC_PAIR_C + 1) enum asrc_inclk { INCLK_NONE = 0x03, INCLK_ESAI_RX = 0x00, INCLK_SSI1_RX = 0x01, INCLK_SSI2_RX = 0x02, INCLK_SSI3_RX = 0x07, INCLK_SPDIF_RX = 0x04, INCLK_MLB_CLK = 0x05, INCLK_PAD = 0x06, INCLK_ESAI_TX = 0x08, INCLK_SSI1_TX = 0x09, INCLK_SSI2_TX = 0x0a, INCLK_SSI3_TX = 0x0b, INCLK_SPDIF_TX = 0x0c, INCLK_ASRCK1_CLK = 0x0f, }; enum asrc_outclk { OUTCLK_NONE = 0x03, OUTCLK_ESAI_TX = 0x00, OUTCLK_SSI1_TX = 0x01, OUTCLK_SSI2_TX = 0x02, OUTCLK_SSI3_TX = 0x07, OUTCLK_SPDIF_TX = 0x04, OUTCLK_MLB_CLK = 0x05, OUTCLK_PAD = 0x06, OUTCLK_ESAI_RX = 0x08, OUTCLK_SSI1_RX = 0x09, OUTCLK_SSI2_RX = 0x0a, OUTCLK_SSI3_RX = 0x0b, OUTCLK_SPDIF_RX = 0x0c, OUTCLK_ASRCK1_CLK = 0x0f, }; #define ASRC_CLK_MAX_NUM 16 enum asrc_word_width { ASRC_WIDTH_24_BIT = 0, ASRC_WIDTH_16_BIT = 1, ASRC_WIDTH_8_BIT = 2, }; struct asrc_config { enum asrc_pair_index pair; unsigned int channel_num; unsigned int buffer_num; unsigned int dma_buffer_size; unsigned int input_sample_rate; unsigned int output_sample_rate; snd_pcm_format_t input_format; snd_pcm_format_t output_format; enum asrc_inclk inclk; enum asrc_outclk outclk; }; struct asrc_req { unsigned int chn_num; enum asrc_pair_index index; }; struct asrc_querybuf { unsigned int buffer_index; unsigned int input_length; unsigned int output_length; unsigned long input_offset; unsigned long output_offset; }; struct asrc_convert_buffer { void *input_buffer_vaddr; void *output_buffer_vaddr; unsigned int input_buffer_length; unsigned int output_buffer_length; }; struct asrc_status_flags { enum asrc_pair_index index; unsigned int overload_error; }; enum asrc_error_status { ASRC_TASK_Q_OVERLOAD = 0x01, ASRC_OUTPUT_TASK_OVERLOAD = 0x02, ASRC_INPUT_TASK_OVERLOAD = 0x04, ASRC_OUTPUT_BUFFER_OVERFLOW = 0x08, ASRC_INPUT_BUFFER_UNDERRUN = 0x10, }; struct dma_block { dma_addr_t dma_paddr; void *dma_vaddr; unsigned int length; }; /** * fsl_asrc_pair: ASRC Pair private data * * @asrc_priv: pointer to its parent module * @config: configuration profile * @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 * @private: pair private area */ struct fsl_asrc_pair { struct fsl_asrc *asrc_priv; struct asrc_config *config; 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; void *private; }; /** * fsl_asrc_pair: ASRC private 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) * @asrck_clk: clock sources to driver ASRC internal logic * @lock: spin lock for resource protection * @pair: pair pointers * @channel_bits: width of ASRCNCR register for each pair * @channel_avail: non-occupied channel numbers * @asrc_rate: default sample rate for ASoC Back-Ends * @asrc_width: default sample width for ASoC Back-Ends * @regcache_cfg: store register value of REG_ASRCFG */ 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; struct clk *asrck_clk[ASRC_CLK_MAX_NUM]; spinlock_t lock; struct fsl_asrc_pair *pair[ASRC_PAIR_MAX_NUM]; unsigned int channel_bits; unsigned int channel_avail; int asrc_rate; int asrc_width; u32 regcache_cfg; }; #define DRV_NAME "fsl-asrc-dai" extern struct snd_soc_component_driver fsl_asrc_component; struct dma_chan *fsl_asrc_get_dma_channel(struct fsl_asrc_pair *pair, bool dir); int fsl_asrc_request_pair(int channels, struct fsl_asrc_pair *pair); void fsl_asrc_release_pair(struct fsl_asrc_pair *pair); #endif /* _FSL_ASRC_H */