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/*
* bfin_sport.h - interface to Blackfin SPORTs
*
* Copyright 2004-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __BFIN_SPORT_H__
#define __BFIN_SPORT_H__
/* Sport mode: it can be set to TDM, i2s or others */
#define NORM_MODE 0x0
#define TDM_MODE 0x1
#define I2S_MODE 0x2
/* Data format, normal, a-law or u-law */
#define NORM_FORMAT 0x0
#define ALAW_FORMAT 0x2
#define ULAW_FORMAT 0x3
/* Function driver which use sport must initialize the structure */
struct sport_config {
/* TDM (multichannels), I2S or other mode */
unsigned int mode:3;
/* if TDM mode is selected, channels must be set */
int channels; /* Must be in 8 units */
unsigned int frame_delay:4; /* Delay between frame sync pulse and first bit */
/* I2S mode */
unsigned int right_first:1; /* Right stereo channel first */
/* In mormal mode, the following item need to be set */
unsigned int lsb_first:1; /* order of transmit or receive data */
unsigned int fsync:1; /* Frame sync required */
unsigned int data_indep:1; /* data independent frame sync generated */
unsigned int act_low:1; /* Active low TFS */
unsigned int late_fsync:1; /* Late frame sync */
unsigned int tckfe:1;
unsigned int sec_en:1; /* Secondary side enabled */
/* Choose clock source */
unsigned int int_clk:1; /* Internal or external clock */
/* If external clock is used, the following fields are ignored */
int serial_clk;
int fsync_clk;
unsigned int data_format:2; /* Normal, u-law or a-law */
int word_len; /* How length of the word in bits, 3-32 bits */
int dma_enabled;
};
/* Userspace interface */
#define SPORT_IOC_MAGIC 'P'
#define SPORT_IOC_CONFIG _IOWR('P', 0x01, struct sport_config)
#ifdef __KERNEL__
#include <linux/types.h>
/*
* All Blackfin system MMRs are padded to 32bits even if the register
* itself is only 16bits. So use a helper macro to streamline this.
*/
#define __BFP(m) u16 m; u16 __pad_##m
struct sport_register {
__BFP(tcr1);
__BFP(tcr2);
__BFP(tclkdiv);
__BFP(tfsdiv);
union {
u32 tx32;
u16 tx16;
};
u32 __pad_tx;
union {
u32 rx32; /* use the anomaly wrapper below */
u16 rx16;
};
u32 __pad_rx;
__BFP(rcr1);
__BFP(rcr2);
__BFP(rclkdiv);
__BFP(rfsdiv);
__BFP(stat);
__BFP(chnl);
__BFP(mcmc1);
__BFP(mcmc2);
u32 mtcs0;
u32 mtcs1;
u32 mtcs2;
u32 mtcs3;
u32 mrcs0;
u32 mrcs1;
u32 mrcs2;
u32 mrcs3;
};
#undef __BFP
#define bfin_read_sport_rx32(base) \
({ \
struct sport_register *__mmrs = (void *)base; \
u32 __ret; \
unsigned long flags; \
if (ANOMALY_05000473) \
local_irq_save(flags); \
__ret = __mmrs->rx32; \
if (ANOMALY_05000473) \
local_irq_restore(flags); \
__ret; \
})
#endif
/* SPORT_TCR1 Masks */
#define TSPEN 0x0001 /* TX enable */
#define ITCLK 0x0002 /* Internal TX Clock Select */
#define TDTYPE 0x000C /* TX Data Formatting Select */
#define DTYPE_NORM 0x0000 /* Data Format Normal */
#define DTYPE_ULAW 0x0008 /* Compand Using u-Law */
#define DTYPE_ALAW 0x000C /* Compand Using A-Law */
#define TLSBIT 0x0010 /* TX Bit Order */
#define ITFS 0x0200 /* Internal TX Frame Sync Select */
#define TFSR 0x0400 /* TX Frame Sync Required Select */
#define DITFS 0x0800 /* Data Independent TX Frame Sync Select */
#define LTFS 0x1000 /* Low TX Frame Sync Select */
#define LATFS 0x2000 /* Late TX Frame Sync Select */
#define TCKFE 0x4000 /* TX Clock Falling Edge Select */
/* SPORT_TCR2 Masks */
#define SLEN 0x001F /* SPORT TX Word Length (2 - 31) */
#define DP_SLEN(x) BFIN_DEPOSIT(SLEN, x)
#define EX_SLEN(x) BFIN_EXTRACT(SLEN, x)
#define TXSE 0x0100 /* TX Secondary Enable */
#define TSFSE 0x0200 /* TX Stereo Frame Sync Enable */
#define TRFST 0x0400 /* TX Right-First Data Order */
/* SPORT_RCR1 Masks */
#define RSPEN 0x0001 /* RX enable */
#define IRCLK 0x0002 /* Internal RX Clock Select */
#define RDTYPE 0x000C /* RX Data Formatting Select */
/* DTYPE_* defined above */
#define RLSBIT 0x0010 /* RX Bit Order */
#define IRFS 0x0200 /* Internal RX Frame Sync Select */
#define RFSR 0x0400 /* RX Frame Sync Required Select */
#define LRFS 0x1000 /* Low RX Frame Sync Select */
#define LARFS 0x2000 /* Late RX Frame Sync Select */
#define RCKFE 0x4000 /* RX Clock Falling Edge Select */
/* SPORT_RCR2 Masks */
/* SLEN defined above */
#define RXSE 0x0100 /* RX Secondary Enable */
#define RSFSE 0x0200 /* RX Stereo Frame Sync Enable */
#define RRFST 0x0400 /* Right-First Data Order */
/* SPORT_STAT Masks */
#define RXNE 0x0001 /* RX FIFO Not Empty Status */
#define RUVF 0x0002 /* RX Underflow Status */
#define ROVF 0x0004 /* RX Overflow Status */
#define TXF 0x0008 /* TX FIFO Full Status */
#define TUVF 0x0010 /* TX Underflow Status */
#define TOVF 0x0020 /* TX Overflow Status */
#define TXHRE 0x0040 /* TX Hold Register Empty */
/* SPORT_MCMC1 Masks */
#define SP_WOFF 0x03FF /* Multichannel Window Offset Field */
#define DP_SP_WOFF(x) BFIN_DEPOSIT(SP_WOFF, x)
#define EX_SP_WOFF(x) BFIN_EXTRACT(SP_WOFF, x)
#define SP_WSIZE 0xF000 /* Multichannel Window Size Field */
#define DP_SP_WSIZE(x) BFIN_DEPOSIT(SP_WSIZE, x)
#define EX_SP_WSIZE(x) BFIN_EXTRACT(SP_WSIZE, x)
/* SPORT_MCMC2 Masks */
#define MCCRM 0x0003 /* Multichannel Clock Recovery Mode */
#define REC_BYPASS 0x0000 /* Bypass Mode (No Clock Recovery) */
#define REC_2FROM4 0x0002 /* Recover 2 MHz Clock from 4 MHz Clock */
#define REC_8FROM16 0x0003 /* Recover 8 MHz Clock from 16 MHz Clock */
#define MCDTXPE 0x0004 /* Multichannel DMA Transmit Packing */
#define MCDRXPE 0x0008 /* Multichannel DMA Receive Packing */
#define MCMEN 0x0010 /* Multichannel Frame Mode Enable */
#define FSDR 0x0080 /* Multichannel Frame Sync to Data Relationship */
#define MFD 0xF000 /* Multichannel Frame Delay */
#define DP_MFD(x) BFIN_DEPOSIT(MFD, x)
#define EX_MFD(x) BFIN_EXTRACT(MFD, x)
#endif
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