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/*
* fsl_asrc.h - Freescale ASRC ALSA SoC header file
*
* Copyright (C) 2014 Freescale Semiconductor, Inc.
*
* Author: Nicolin Chen <nicoleotsuka@gmail.com>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
#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 (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_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_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_OAFi_SHIFT)
#define ASRFSTi_IAEi (1 << ASRFSTi_OAFi_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;
enum asrc_word_width input_word_width;
enum asrc_word_width output_word_width;
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
* @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
*/
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 *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;
};
extern struct snd_soc_platform_driver fsl_asrc_platform;
struct dma_chan *fsl_asrc_get_dma_channel(struct fsl_asrc_pair *pair, bool dir);
#endif /* _FSL_ASRC_H */
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