linux/sound/soc/davinci/davinci-mcasp.h

/*
 * ALSA SoC McASP Audio Layer for TI DAVINCI processor
 *
 * MCASP related definitions
 *
 * Author: Nirmal Pandey <n-pandey@ti.com>,
 *         Suresh Rajashekara <suresh.r@ti.com>
 *         Steve Chen <schen@.mvista.com>
 *
 * Copyright:   (C) 2009 MontaVista Software, Inc., <source@mvista.com>
 * Copyright:   (C) 2009  Texas Instruments, India
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef DAVINCI_MCASP_H
#define DAVINCI_MCASP_H

/*
 * McASP register definitions
 */
#define DAVINCI_MCASP_PID_REG		0x00
#define DAVINCI_MCASP_PWREMUMGT_REG	0x04

#define DAVINCI_MCASP_PFUNC_REG		0x10
#define DAVINCI_MCASP_PDIR_REG		0x14
#define DAVINCI_MCASP_PDOUT_REG		0x18
#define DAVINCI_MCASP_PDSET_REG		0x1c

#define DAVINCI_MCASP_PDCLR_REG		0x20

#define DAVINCI_MCASP_TLGC_REG		0x30
#define DAVINCI_MCASP_TLMR_REG		0x34

#define DAVINCI_MCASP_GBLCTL_REG	0x44
#define DAVINCI_MCASP_AMUTE_REG		0x48
#define DAVINCI_MCASP_LBCTL_REG		0x4c

#define DAVINCI_MCASP_TXDITCTL_REG	0x50

#define DAVINCI_MCASP_GBLCTLR_REG	0x60
#define DAVINCI_MCASP_RXMASK_REG	0x64
#define DAVINCI_MCASP_RXFMT_REG		0x68
#define DAVINCI_MCASP_RXFMCTL_REG	0x6c

#define DAVINCI_MCASP_ACLKRCTL_REG	0x70
#define DAVINCI_MCASP_AHCLKRCTL_REG	0x74
#define DAVINCI_MCASP_RXTDM_REG		0x78
#define DAVINCI_MCASP_EVTCTLR_REG	0x7c

#define DAVINCI_MCASP_RXSTAT_REG	0x80
#define DAVINCI_MCASP_RXTDMSLOT_REG	0x84
#define DAVINCI_MCASP_RXCLKCHK_REG	0x88
#define DAVINCI_MCASP_REVTCTL_REG	0x8c

#define DAVINCI_MCASP_GBLCTLX_REG	0xa0
#define DAVINCI_MCASP_TXMASK_REG	0xa4
#define DAVINCI_MCASP_TXFMT_REG		0xa8
#define DAVINCI_MCASP_TXFMCTL_REG	0xac

#define DAVINCI_MCASP_ACLKXCTL_REG	0xb0
#define DAVINCI_MCASP_AHCLKXCTL_REG	0xb4
#define DAVINCI_MCASP_TXTDM_REG		0xb8
#define DAVINCI_MCASP_EVTCTLX_REG	0xbc

#define DAVINCI_MCASP_TXSTAT_REG	0xc0
#define DAVINCI_MCASP_TXTDMSLOT_REG	0xc4
#define DAVINCI_MCASP_TXCLKCHK_REG	0xc8
#define DAVINCI_MCASP_XEVTCTL_REG	0xcc

/* Left(even TDM Slot) Channel Status Register File */
#define DAVINCI_MCASP_DITCSRA_REG	0x100
/* Right(odd TDM slot) Channel Status Register File */
#define DAVINCI_MCASP_DITCSRB_REG	0x118
/* Left(even TDM slot) User Data Register File */
#define DAVINCI_MCASP_DITUDRA_REG	0x130
/* Right(odd TDM Slot) User Data Register File */
#define DAVINCI_MCASP_DITUDRB_REG	0x148

/* Serializer n Control Register */
#define DAVINCI_MCASP_XRSRCTL_BASE_REG	0x180
#define DAVINCI_MCASP_XRSRCTL_REG(n)	(DAVINCI_MCASP_XRSRCTL_BASE_REG + \
						(n << 2))

/* Transmit Buffer for Serializer n */
#define DAVINCI_MCASP_TXBUF_REG(n)	(0x200 + (n << 2))
/* Receive Buffer for Serializer n */
#define DAVINCI_MCASP_RXBUF_REG(n)	(0x280 + (n << 2))

/* McASP FIFO Registers */
#define DAVINCI_MCASP_V2_AFIFO_BASE	(0x1010)
#define DAVINCI_MCASP_V3_AFIFO_BASE	(0x1000)

/* FIFO register offsets from AFIFO base */
#define MCASP_WFIFOCTL_OFFSET		(0x0)
#define MCASP_WFIFOSTS_OFFSET		(0x4)
#define MCASP_RFIFOCTL_OFFSET		(0x8)
#define MCASP_RFIFOSTS_OFFSET		(0xc)

/*
 * DAVINCI_MCASP_PWREMUMGT_REG - Power Down and Emulation Management
 *     Register Bits
 */
#define MCASP_FREE	BIT(0)
#define MCASP_SOFT	BIT(1)

/*
 * DAVINCI_MCASP_PFUNC_REG - Pin Function / GPIO Enable Register Bits
 */
#define AXR(n)		(1<<n)
#define PFUNC_AMUTE	BIT(25)
#define ACLKX		BIT(26)
#define AHCLKX		BIT(27)
#define AFSX		BIT(28)
#define ACLKR		BIT(29)
#define AHCLKR		BIT(30)
#define AFSR		BIT(31)

/*
 * DAVINCI_MCASP_PDIR_REG - Pin Direction Register Bits
 */
#define AXR(n)		(1<<n)
#define PDIR_AMUTE	BIT(25)
#define ACLKX		BIT(26)
#define AHCLKX		BIT(27)
#define AFSX		BIT(28)
#define ACLKR		BIT(29)
#define AHCLKR		BIT(30)
#define AFSR		BIT(31)

/*
 * DAVINCI_MCASP_TXDITCTL_REG - Transmit DIT Control Register Bits
 */
#define DITEN	BIT(0)	/* Transmit DIT mode enable/disable */
#define VA	BIT(2)
#define VB	BIT(3)

/*
 * DAVINCI_MCASP_TXFMT_REG - Transmit Bitstream Format Register Bits
 */
#define TXROT(val)	(val)
#define TXSEL		BIT(3)
#define TXSSZ(val)	(val<<4)
#define TXPBIT(val)	(val<<8)
#define TXPAD(val)	(val<<13)
#define TXORD		BIT(15)
#define FSXDLY(val)	(val<<16)

/*
 * DAVINCI_MCASP_RXFMT_REG - Receive Bitstream Format Register Bits
 */
#define RXROT(val)	(val)
#define RXSEL		BIT(3)
#define RXSSZ(val)	(val<<4)
#define RXPBIT(val)	(val<<8)
#define RXPAD(val)	(val<<13)
#define RXORD		BIT(15)
#define FSRDLY(val)	(val<<16)

/*
 * DAVINCI_MCASP_TXFMCTL_REG -  Transmit Frame Control Register Bits
 */
#define FSXPOL		BIT(0)
#define AFSXE		BIT(1)
#define FSXDUR		BIT(4)
#define FSXMOD(val)	(val<<7)

/*
 * DAVINCI_MCASP_RXFMCTL_REG - Receive Frame Control Register Bits
 */
#define FSRPOL		BIT(0)
#define AFSRE		BIT(1)
#define FSRDUR		BIT(4)
#define FSRMOD(val)	(val<<7)

/*
 * DAVINCI_MCASP_ACLKXCTL_REG - Transmit Clock Control Register Bits
 */
#define ACLKXDIV(val)	(val)
#define ACLKXE		BIT(5)
#define TX_ASYNC	BIT(6)
#define ACLKXPOL	BIT(7)
#define ACLKXDIV_MASK	0x1f

/*
 * DAVINCI_MCASP_ACLKRCTL_REG Receive Clock Control Register Bits
 */
#define ACLKRDIV(val)	(val)
#define ACLKRE		BIT(5)
#define RX_ASYNC	BIT(6)
#define ACLKRPOL	BIT(7)
#define ACLKRDIV_MASK	0x1f

/*
 * DAVINCI_MCASP_AHCLKXCTL_REG - High Frequency Transmit Clock Control
 *     Register Bits
 */
#define AHCLKXDIV(val)	(val)
#define AHCLKXPOL	BIT(14)
#define AHCLKXE		BIT(15)
#define AHCLKXDIV_MASK	0xfff

/*
 * DAVINCI_MCASP_AHCLKRCTL_REG - High Frequency Receive Clock Control
 *     Register Bits
 */
#define AHCLKRDIV(val)	(val)
#define AHCLKRPOL	BIT(14)
#define AHCLKRE		BIT(15)
#define AHCLKRDIV_MASK	0xfff

/*
 * DAVINCI_MCASP_XRSRCTL_BASE_REG -  Serializer Control Register Bits
 */
#define MODE(val)	(val)
#define DISMOD_3STATE	(0x0)
#define DISMOD_LOW	(0x2 << 2)
#define DISMOD_HIGH	(0x3 << 2)
#define DISMOD_MASK	DISMOD_HIGH
#define TXSTATE		BIT(4)
#define RXSTATE		BIT(5)
#define SRMOD_MASK	3
#define SRMOD_INACTIVE	0

/*
 * DAVINCI_MCASP_LBCTL_REG - Loop Back Control Register Bits
 */
#define LBEN		BIT(0)
#define LBORD		BIT(1)
#define LBGENMODE(val)	(val<<2)

/*
 * DAVINCI_MCASP_TXTDMSLOT_REG - Transmit TDM Slot Register configuration
 */
#define TXTDMS(n)	(1<<n)

/*
 * DAVINCI_MCASP_RXTDMSLOT_REG - Receive TDM Slot Register configuration
 */
#define RXTDMS(n)	(1<<n)

/*
 * DAVINCI_MCASP_GBLCTL_REG -  Global Control Register Bits
 */
#define RXCLKRST	BIT(0)	/* Receiver Clock Divider Reset */
#define RXHCLKRST	BIT(1)	/* Receiver High Frequency Clock Divider */
#define RXSERCLR	BIT(2)	/* Receiver Serializer Clear */
#define RXSMRST		BIT(3)	/* Receiver State Machine Reset */
#define RXFSRST		BIT(4)	/* Frame Sync Generator Reset */
#define TXCLKRST	BIT(8)	/* Transmitter Clock Divider Reset */
#define TXHCLKRST	BIT(9)	/* Transmitter High Frequency Clock Divider*/
#define TXSERCLR	BIT(10)	/* Transmit Serializer Clear */
#define TXSMRST		BIT(11)	/* Transmitter State Machine Reset */
#define TXFSRST		BIT(12)	/* Frame Sync Generator Reset */

/*
 * DAVINCI_MCASP_TXSTAT_REG - Transmitter Status Register Bits
 * DAVINCI_MCASP_RXSTAT_REG - Receiver Status Register Bits
 */
#define XRERR		BIT(8) /* Transmit/Receive error */
#define XRDATA		BIT(5) /* Transmit/Receive data ready */

/*
 * DAVINCI_MCASP_AMUTE_REG -  Mute Control Register Bits
 */
#define MUTENA(val)	(val)
#define MUTEINPOL	BIT(2)
#define MUTEINENA	BIT(3)
#define MUTEIN		BIT(4)
#define MUTER		BIT(5)
#define MUTEX		BIT(6)
#define MUTEFSR		BIT(7)
#define MUTEFSX		BIT(8)
#define MUTEBADCLKR	BIT(9)
#define MUTEBADCLKX	BIT(10)
#define MUTERXDMAERR	BIT(11)
#define MUTETXDMAERR	BIT(12)

/*
 * DAVINCI_MCASP_REVTCTL_REG - Receiver DMA Event Control Register bits
 */
#define RXDATADMADIS	BIT(0)

/*
 * DAVINCI_MCASP_XEVTCTL_REG - Transmitter DMA Event Control Register bits
 */
#define TXDATADMADIS	BIT(0)

/*
 * DAVINCI_MCASP_EVTCTLR_REG - Receiver Interrupt Control Register Bits
 */
#define ROVRN		BIT(0)

/*
 * DAVINCI_MCASP_EVTCTLX_REG - Transmitter Interrupt Control Register Bits
 */
#define XUNDRN		BIT(0)

/*
 * DAVINCI_MCASP_W[R]FIFOCTL - Write/Read FIFO Control Register bits
 */
#define FIFO_ENABLE	BIT(16)
#define NUMEVT_MASK	(0xFF << 8)
#define NUMEVT(x)	(((x) & 0xFF) << 8)
#define NUMDMA_MASK	(0xFF)

/* clock divider IDs */
#define MCASP_CLKDIV_AUXCLK		0 /* HCLK divider from AUXCLK */
#define MCASP_CLKDIV_BCLK		1 /* BCLK divider from HCLK */
#define MCASP_CLKDIV_BCLK_FS_RATIO	2 /* to set BCLK FS ration */

#endif	/* DAVINCI_MCASP_H */