![Mike Frysinger](/assets/img/avatar_default.png)
Rather than have every SPORT driver copy & paste things, declare the C structure and MMR bitmasks in one place for everyone to use. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
196 lines
5.8 KiB
C
196 lines
5.8 KiB
C
/*
|
|
* 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
|
|
|
|
/* Workaround defBF*.h SPORT MMRs till they get cleansed */
|
|
#undef DTYPE_NORM
|
|
#undef SLEN
|
|
#undef SP_WOFF
|
|
#undef SP_WSIZE
|
|
|
|
/* 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
|