503 lines
12 KiB
C
503 lines
12 KiB
C
/*
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* Copyright (C) ST-Ericsson SA 2012
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*
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* Author: Ola Lilja <ola.o.lilja@stericsson.com>,
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* for ST-Ericsson.
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*
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* License terms:
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#ifndef UX500_MSP_I2S_H
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#define UX500_MSP_I2S_H
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#include <linux/platform_device.h>
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#include <linux/platform_data/asoc-ux500-msp.h>
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#define MSP_INPUT_FREQ_APB 48000000
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/*** Stereo mode. Used for APB data accesses as 16 bits accesses (mono),
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* 32 bits accesses (stereo).
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***/
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enum msp_stereo_mode {
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MSP_MONO,
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MSP_STEREO
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};
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/* Direction (Transmit/Receive mode) */
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enum msp_direction {
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MSP_TX = 1,
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MSP_RX = 2
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};
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/* Transmit and receive configuration register */
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#define MSP_BIG_ENDIAN 0x00000000
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#define MSP_LITTLE_ENDIAN 0x00001000
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#define MSP_UNEXPECTED_FS_ABORT 0x00000000
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#define MSP_UNEXPECTED_FS_IGNORE 0x00008000
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#define MSP_NON_MODE_BIT_MASK 0x00009000
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/* Global configuration register */
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#define RX_ENABLE 0x00000001
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#define RX_FIFO_ENABLE 0x00000002
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#define RX_SYNC_SRG 0x00000010
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#define RX_CLK_POL_RISING 0x00000020
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#define RX_CLK_SEL_SRG 0x00000040
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#define TX_ENABLE 0x00000100
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#define TX_FIFO_ENABLE 0x00000200
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#define TX_SYNC_SRG_PROG 0x00001800
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#define TX_SYNC_SRG_AUTO 0x00001000
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#define TX_CLK_POL_RISING 0x00002000
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#define TX_CLK_SEL_SRG 0x00004000
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#define TX_EXTRA_DELAY_ENABLE 0x00008000
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#define SRG_ENABLE 0x00010000
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#define FRAME_GEN_ENABLE 0x00100000
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#define SRG_CLK_SEL_APB 0x00000000
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#define RX_FIFO_SYNC_HI 0x00000000
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#define TX_FIFO_SYNC_HI 0x00000000
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#define SPI_CLK_MODE_NORMAL 0x00000000
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#define MSP_FRAME_SIZE_AUTO -1
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#define MSP_DR 0x00
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#define MSP_GCR 0x04
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#define MSP_TCF 0x08
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#define MSP_RCF 0x0c
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#define MSP_SRG 0x10
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#define MSP_FLR 0x14
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#define MSP_DMACR 0x18
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#define MSP_IMSC 0x20
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#define MSP_RIS 0x24
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#define MSP_MIS 0x28
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#define MSP_ICR 0x2c
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#define MSP_MCR 0x30
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#define MSP_RCV 0x34
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#define MSP_RCM 0x38
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#define MSP_TCE0 0x40
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#define MSP_TCE1 0x44
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#define MSP_TCE2 0x48
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#define MSP_TCE3 0x4c
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#define MSP_RCE0 0x60
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#define MSP_RCE1 0x64
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#define MSP_RCE2 0x68
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#define MSP_RCE3 0x6c
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#define MSP_IODLY 0x70
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#define MSP_ITCR 0x80
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#define MSP_ITIP 0x84
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#define MSP_ITOP 0x88
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#define MSP_TSTDR 0x8c
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#define MSP_PID0 0xfe0
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#define MSP_PID1 0xfe4
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#define MSP_PID2 0xfe8
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#define MSP_PID3 0xfec
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#define MSP_CID0 0xff0
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#define MSP_CID1 0xff4
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#define MSP_CID2 0xff8
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#define MSP_CID3 0xffc
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/* Protocol dependant parameters list */
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#define RX_ENABLE_MASK BIT(0)
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#define RX_FIFO_ENABLE_MASK BIT(1)
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#define RX_FSYNC_MASK BIT(2)
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#define DIRECT_COMPANDING_MASK BIT(3)
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#define RX_SYNC_SEL_MASK BIT(4)
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#define RX_CLK_POL_MASK BIT(5)
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#define RX_CLK_SEL_MASK BIT(6)
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#define LOOPBACK_MASK BIT(7)
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#define TX_ENABLE_MASK BIT(8)
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#define TX_FIFO_ENABLE_MASK BIT(9)
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#define TX_FSYNC_MASK BIT(10)
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#define TX_MSP_TDR_TSR BIT(11)
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#define TX_SYNC_SEL_MASK (BIT(12) | BIT(11))
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#define TX_CLK_POL_MASK BIT(13)
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#define TX_CLK_SEL_MASK BIT(14)
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#define TX_EXTRA_DELAY_MASK BIT(15)
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#define SRG_ENABLE_MASK BIT(16)
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#define SRG_CLK_POL_MASK BIT(17)
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#define SRG_CLK_SEL_MASK (BIT(19) | BIT(18))
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#define FRAME_GEN_EN_MASK BIT(20)
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#define SPI_CLK_MODE_MASK (BIT(22) | BIT(21))
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#define SPI_BURST_MODE_MASK BIT(23)
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#define RXEN_SHIFT 0
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#define RFFEN_SHIFT 1
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#define RFSPOL_SHIFT 2
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#define DCM_SHIFT 3
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#define RFSSEL_SHIFT 4
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#define RCKPOL_SHIFT 5
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#define RCKSEL_SHIFT 6
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#define LBM_SHIFT 7
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#define TXEN_SHIFT 8
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#define TFFEN_SHIFT 9
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#define TFSPOL_SHIFT 10
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#define TFSSEL_SHIFT 11
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#define TCKPOL_SHIFT 13
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#define TCKSEL_SHIFT 14
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#define TXDDL_SHIFT 15
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#define SGEN_SHIFT 16
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#define SCKPOL_SHIFT 17
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#define SCKSEL_SHIFT 18
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#define FGEN_SHIFT 20
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#define SPICKM_SHIFT 21
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#define TBSWAP_SHIFT 28
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#define RCKPOL_MASK BIT(0)
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#define TCKPOL_MASK BIT(0)
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#define SPICKM_MASK (BIT(1) | BIT(0))
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#define MSP_RX_CLKPOL_BIT(n) ((n & RCKPOL_MASK) << RCKPOL_SHIFT)
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#define MSP_TX_CLKPOL_BIT(n) ((n & TCKPOL_MASK) << TCKPOL_SHIFT)
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#define P1ELEN_SHIFT 0
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#define P1FLEN_SHIFT 3
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#define DTYP_SHIFT 10
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#define ENDN_SHIFT 12
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#define DDLY_SHIFT 13
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#define FSIG_SHIFT 15
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#define P2ELEN_SHIFT 16
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#define P2FLEN_SHIFT 19
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#define P2SM_SHIFT 26
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#define P2EN_SHIFT 27
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#define FSYNC_SHIFT 15
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#define P1ELEN_MASK 0x00000007
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#define P2ELEN_MASK 0x00070000
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#define P1FLEN_MASK 0x00000378
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#define P2FLEN_MASK 0x03780000
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#define DDLY_MASK 0x00003000
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#define DTYP_MASK 0x00000600
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#define P2SM_MASK 0x04000000
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#define P2EN_MASK 0x08000000
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#define ENDN_MASK 0x00001000
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#define TFSPOL_MASK 0x00000400
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#define TBSWAP_MASK 0x30000000
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#define COMPANDING_MODE_MASK 0x00000c00
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#define FSYNC_MASK 0x00008000
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#define MSP_P1_ELEM_LEN_BITS(n) (n & P1ELEN_MASK)
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#define MSP_P2_ELEM_LEN_BITS(n) (((n) << P2ELEN_SHIFT) & P2ELEN_MASK)
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#define MSP_P1_FRAME_LEN_BITS(n) (((n) << P1FLEN_SHIFT) & P1FLEN_MASK)
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#define MSP_P2_FRAME_LEN_BITS(n) (((n) << P2FLEN_SHIFT) & P2FLEN_MASK)
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#define MSP_DATA_DELAY_BITS(n) (((n) << DDLY_SHIFT) & DDLY_MASK)
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#define MSP_DATA_TYPE_BITS(n) (((n) << DTYP_SHIFT) & DTYP_MASK)
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#define MSP_P2_START_MODE_BIT(n) ((n << P2SM_SHIFT) & P2SM_MASK)
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#define MSP_P2_ENABLE_BIT(n) ((n << P2EN_SHIFT) & P2EN_MASK)
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#define MSP_SET_ENDIANNES_BIT(n) ((n << ENDN_SHIFT) & ENDN_MASK)
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#define MSP_FSYNC_POL(n) ((n << TFSPOL_SHIFT) & TFSPOL_MASK)
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#define MSP_DATA_WORD_SWAP(n) ((n << TBSWAP_SHIFT) & TBSWAP_MASK)
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#define MSP_SET_COMPANDING_MODE(n) ((n << DTYP_SHIFT) & \
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COMPANDING_MODE_MASK)
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#define MSP_SET_FSYNC_IGNORE(n) ((n << FSYNC_SHIFT) & FSYNC_MASK)
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/* Flag register */
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#define RX_BUSY BIT(0)
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#define RX_FIFO_EMPTY BIT(1)
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#define RX_FIFO_FULL BIT(2)
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#define TX_BUSY BIT(3)
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#define TX_FIFO_EMPTY BIT(4)
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#define TX_FIFO_FULL BIT(5)
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#define RBUSY_SHIFT 0
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#define RFE_SHIFT 1
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#define RFU_SHIFT 2
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#define TBUSY_SHIFT 3
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#define TFE_SHIFT 4
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#define TFU_SHIFT 5
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/* Multichannel control register */
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#define RMCEN_SHIFT 0
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#define RMCSF_SHIFT 1
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#define RCMPM_SHIFT 3
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#define TMCEN_SHIFT 5
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#define TNCSF_SHIFT 6
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/* Sample rate generator register */
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#define SCKDIV_SHIFT 0
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#define FRWID_SHIFT 10
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#define FRPER_SHIFT 16
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#define SCK_DIV_MASK 0x0000003FF
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#define FRAME_WIDTH_BITS(n) (((n) << FRWID_SHIFT) & 0x0000FC00)
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#define FRAME_PERIOD_BITS(n) (((n) << FRPER_SHIFT) & 0x1FFF0000)
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/* DMA controller register */
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#define RX_DMA_ENABLE BIT(0)
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#define TX_DMA_ENABLE BIT(1)
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#define RDMAE_SHIFT 0
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#define TDMAE_SHIFT 1
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/* Interrupt Register */
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#define RX_SERVICE_INT BIT(0)
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#define RX_OVERRUN_ERROR_INT BIT(1)
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#define RX_FSYNC_ERR_INT BIT(2)
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#define RX_FSYNC_INT BIT(3)
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#define TX_SERVICE_INT BIT(4)
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#define TX_UNDERRUN_ERR_INT BIT(5)
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#define TX_FSYNC_ERR_INT BIT(6)
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#define TX_FSYNC_INT BIT(7)
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#define ALL_INT 0x000000ff
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/* MSP test control register */
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#define MSP_ITCR_ITEN BIT(0)
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#define MSP_ITCR_TESTFIFO BIT(1)
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#define RMCEN_BIT 0
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#define RMCSF_BIT 1
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#define RCMPM_BIT 3
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#define TMCEN_BIT 5
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#define TNCSF_BIT 6
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/* Single or dual phase mode */
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enum msp_phase_mode {
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MSP_SINGLE_PHASE,
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MSP_DUAL_PHASE
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};
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/* Frame length */
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enum msp_frame_length {
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MSP_FRAME_LEN_1 = 0,
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MSP_FRAME_LEN_2 = 1,
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MSP_FRAME_LEN_4 = 3,
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MSP_FRAME_LEN_8 = 7,
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MSP_FRAME_LEN_12 = 11,
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MSP_FRAME_LEN_16 = 15,
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MSP_FRAME_LEN_20 = 19,
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MSP_FRAME_LEN_32 = 31,
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MSP_FRAME_LEN_48 = 47,
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MSP_FRAME_LEN_64 = 63
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};
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/* Element length */
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enum msp_elem_length {
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MSP_ELEM_LEN_8 = 0,
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MSP_ELEM_LEN_10 = 1,
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MSP_ELEM_LEN_12 = 2,
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MSP_ELEM_LEN_14 = 3,
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MSP_ELEM_LEN_16 = 4,
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MSP_ELEM_LEN_20 = 5,
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MSP_ELEM_LEN_24 = 6,
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MSP_ELEM_LEN_32 = 7
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};
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enum msp_data_xfer_width {
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MSP_DATA_TRANSFER_WIDTH_BYTE,
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MSP_DATA_TRANSFER_WIDTH_HALFWORD,
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MSP_DATA_TRANSFER_WIDTH_WORD
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};
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enum msp_frame_sync {
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MSP_FSYNC_UNIGNORE = 0,
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MSP_FSYNC_IGNORE = 1,
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};
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enum msp_phase2_start_mode {
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MSP_PHASE2_START_MODE_IMEDIATE,
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MSP_PHASE2_START_MODE_FSYNC
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};
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enum msp_btf {
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MSP_BTF_MS_BIT_FIRST = 0,
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MSP_BTF_LS_BIT_FIRST = 1
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};
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enum msp_fsync_pol {
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MSP_FSYNC_POL_ACT_HI = 0,
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MSP_FSYNC_POL_ACT_LO = 1
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};
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/* Data delay (in bit clock cycles) */
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enum msp_delay {
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MSP_DELAY_0 = 0,
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MSP_DELAY_1 = 1,
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MSP_DELAY_2 = 2,
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MSP_DELAY_3 = 3
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};
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/* Configurations of clocks (transmit, receive or sample rate generator) */
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enum msp_edge {
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MSP_FALLING_EDGE = 0,
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MSP_RISING_EDGE = 1,
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};
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enum msp_hws {
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MSP_SWAP_NONE = 0,
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MSP_SWAP_BYTE_PER_WORD = 1,
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MSP_SWAP_BYTE_PER_HALF_WORD = 2,
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MSP_SWAP_HALF_WORD_PER_WORD = 3
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};
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enum msp_compress_mode {
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MSP_COMPRESS_MODE_LINEAR = 0,
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MSP_COMPRESS_MODE_MU_LAW = 2,
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MSP_COMPRESS_MODE_A_LAW = 3
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};
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enum msp_expand_mode {
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MSP_EXPAND_MODE_LINEAR = 0,
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MSP_EXPAND_MODE_LINEAR_SIGNED = 1,
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MSP_EXPAND_MODE_MU_LAW = 2,
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MSP_EXPAND_MODE_A_LAW = 3
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};
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#define MSP_FRAME_PERIOD_IN_MONO_MODE 256
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#define MSP_FRAME_PERIOD_IN_STEREO_MODE 32
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#define MSP_FRAME_WIDTH_IN_STEREO_MODE 16
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enum msp_protocol {
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MSP_I2S_PROTOCOL,
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MSP_PCM_PROTOCOL,
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MSP_PCM_COMPAND_PROTOCOL,
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MSP_INVALID_PROTOCOL
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};
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/*
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* No of registers to backup during
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* suspend resume
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*/
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#define MAX_MSP_BACKUP_REGS 36
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enum i2s_direction_t {
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MSP_DIR_TX = 0x01,
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MSP_DIR_RX = 0x02,
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};
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enum msp_data_size {
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MSP_DATA_BITS_DEFAULT = -1,
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MSP_DATA_BITS_8 = 0x00,
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MSP_DATA_BITS_10,
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MSP_DATA_BITS_12,
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MSP_DATA_BITS_14,
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MSP_DATA_BITS_16,
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MSP_DATA_BITS_20,
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MSP_DATA_BITS_24,
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MSP_DATA_BITS_32,
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};
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enum msp_state {
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MSP_STATE_IDLE = 0,
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MSP_STATE_CONFIGURED = 1,
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MSP_STATE_RUNNING = 2,
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};
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enum msp_rx_comparison_enable_mode {
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MSP_COMPARISON_DISABLED = 0,
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MSP_COMPARISON_NONEQUAL_ENABLED = 2,
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MSP_COMPARISON_EQUAL_ENABLED = 3
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};
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struct msp_multichannel_config {
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bool rx_multichannel_enable;
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bool tx_multichannel_enable;
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enum msp_rx_comparison_enable_mode rx_comparison_enable_mode;
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u8 padding;
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u32 comparison_value;
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u32 comparison_mask;
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u32 rx_channel_0_enable;
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u32 rx_channel_1_enable;
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u32 rx_channel_2_enable;
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u32 rx_channel_3_enable;
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u32 tx_channel_0_enable;
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u32 tx_channel_1_enable;
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u32 tx_channel_2_enable;
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u32 tx_channel_3_enable;
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};
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struct msp_protdesc {
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u32 rx_phase_mode;
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u32 tx_phase_mode;
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u32 rx_phase2_start_mode;
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u32 tx_phase2_start_mode;
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u32 rx_byte_order;
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u32 tx_byte_order;
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u32 rx_frame_len_1;
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u32 rx_frame_len_2;
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u32 tx_frame_len_1;
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u32 tx_frame_len_2;
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u32 rx_elem_len_1;
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u32 rx_elem_len_2;
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u32 tx_elem_len_1;
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u32 tx_elem_len_2;
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u32 rx_data_delay;
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u32 tx_data_delay;
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u32 rx_clk_pol;
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u32 tx_clk_pol;
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u32 rx_fsync_pol;
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u32 tx_fsync_pol;
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u32 rx_half_word_swap;
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u32 tx_half_word_swap;
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u32 compression_mode;
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u32 expansion_mode;
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u32 frame_sync_ignore;
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u32 frame_period;
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u32 frame_width;
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u32 clocks_per_frame;
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};
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struct ux500_msp_config {
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unsigned int f_inputclk;
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unsigned int rx_clk_sel;
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unsigned int tx_clk_sel;
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unsigned int srg_clk_sel;
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unsigned int rx_fsync_pol;
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unsigned int tx_fsync_pol;
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unsigned int rx_fsync_sel;
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unsigned int tx_fsync_sel;
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unsigned int rx_fifo_config;
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unsigned int tx_fifo_config;
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unsigned int loopback_enable;
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unsigned int tx_data_enable;
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unsigned int default_protdesc;
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struct msp_protdesc protdesc;
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int multichannel_configured;
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struct msp_multichannel_config multichannel_config;
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unsigned int direction;
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unsigned int protocol;
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unsigned int frame_freq;
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enum msp_data_size data_size;
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unsigned int def_elem_len;
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unsigned int iodelay;
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};
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struct ux500_msp_dma_params {
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unsigned int data_size;
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dma_addr_t tx_rx_addr;
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struct stedma40_chan_cfg *dma_cfg;
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};
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struct ux500_msp {
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int id;
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void __iomem *registers;
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struct device *dev;
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struct ux500_msp_dma_params playback_dma_data;
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struct ux500_msp_dma_params capture_dma_data;
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enum msp_state msp_state;
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int def_elem_len;
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unsigned int dir_busy;
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int loopback_enable;
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unsigned int f_bitclk;
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};
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struct msp_i2s_platform_data;
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int ux500_msp_i2s_init_msp(struct platform_device *pdev,
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struct ux500_msp **msp_p,
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struct msp_i2s_platform_data *platform_data);
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void ux500_msp_i2s_cleanup_msp(struct platform_device *pdev,
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struct ux500_msp *msp);
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int ux500_msp_i2s_open(struct ux500_msp *msp, struct ux500_msp_config *config);
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int ux500_msp_i2s_close(struct ux500_msp *msp,
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unsigned int dir);
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int ux500_msp_i2s_trigger(struct ux500_msp *msp, int cmd,
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int direction);
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#endif
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