diff options
Diffstat (limited to 'arch/blackfin/include/asm/bfin_sport.h')
| -rw-r--r-- | arch/blackfin/include/asm/bfin_sport.h | 227 |
1 files changed, 130 insertions, 97 deletions
diff --git a/arch/blackfin/include/asm/bfin_sport.h b/arch/blackfin/include/asm/bfin_sport.h index b558908..9626cf7 100644 --- a/arch/blackfin/include/asm/bfin_sport.h +++ b/arch/blackfin/include/asm/bfin_sport.h @@ -1,7 +1,7 @@ /* - * bfin_sport.h - userspace header for bfin sport driver + * bfin_sport.h - interface to Blackfin SPORTs * - * Copyright 2004-2008 Analog Devices Inc. + * Copyright 2004-2009 Analog Devices Inc. * * Licensed under the GPL-2 or later. */ @@ -9,16 +9,6 @@ #ifndef __BFIN_SPORT_H__ #define __BFIN_SPORT_H__ -#ifdef __KERNEL__ -#include <linux/cdev.h> -#include <linux/mutex.h> -#include <linux/sched.h> -#include <linux/wait.h> -#endif - -#define SPORT_MAJOR 237 -#define SPORT_NR_DEVS 2 - /* Sport mode: it can be set to TDM, i2s or others */ #define NORM_MODE 0x0 #define TDM_MODE 0x1 @@ -35,7 +25,7 @@ struct sport_config { unsigned int mode:3; /* if TDM mode is selected, channels must be set */ - int channels; /* Must be in 8 units */ + int channels; /* Must be in 8 units */ unsigned int frame_delay:4; /* Delay between frame sync pulse and first bit */ /* I2S mode */ @@ -69,94 +59,137 @@ struct sport_config { #ifdef __KERNEL__ -struct sport_register { - unsigned short tcr1; - unsigned short reserved0; - unsigned short tcr2; - unsigned short reserved1; - unsigned short tclkdiv; - unsigned short reserved2; - unsigned short tfsdiv; - unsigned short reserved3; - unsigned long tx; - unsigned long reserved_l0; - unsigned long rx; - unsigned long reserved_l1; - unsigned short rcr1; - unsigned short reserved4; - unsigned short rcr2; - unsigned short reserved5; - unsigned short rclkdiv; - unsigned short reserved6; - unsigned short rfsdiv; - unsigned short reserved7; - unsigned short stat; - unsigned short reserved8; - unsigned short chnl; - unsigned short reserved9; - unsigned short mcmc1; - unsigned short reserved10; - unsigned short mcmc2; - unsigned short reserved11; - unsigned long mtcs0; - unsigned long mtcs1; - unsigned long mtcs2; - unsigned long mtcs3; - unsigned long mrcs0; - unsigned long mrcs1; - unsigned long mrcs2; - unsigned long mrcs3; -}; - -struct sport_dev { - struct cdev cdev; /* Char device structure */ - - int sport_num; +#include <linux/types.h> - int dma_rx_chan; - int dma_tx_chan; - - int rx_irq; - unsigned char *rx_buf; /* Buffer store the received data */ - int rx_len; /* How many bytes will be received */ - int rx_received; /* How many bytes has been received */ - - int tx_irq; - const unsigned char *tx_buf; - int tx_len; - int tx_sent; - - int err_irq; - - struct mutex mutex; /* mutual exclusion semaphore */ - struct task_struct *task; - - wait_queue_head_t waitq; - int wait_con; - struct sport_register *regs; - struct sport_config config; +/* + * 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 -#define SPORT_TCR1 0 -#define SPORT_TCR2 1 -#define SPORT_TCLKDIV 2 -#define SPORT_TFSDIV 3 -#define SPORT_RCR1 8 -#define SPORT_RCR2 9 -#define SPORT_RCLKDIV 10 -#define SPORT_RFSDIV 11 -#define SPORT_CHANNEL 13 -#define SPORT_MCMC1 14 -#define SPORT_MCMC2 15 -#define SPORT_MTCS0 16 -#define SPORT_MTCS1 17 -#define SPORT_MTCS2 18 -#define SPORT_MTCS3 19 -#define SPORT_MRCS0 20 -#define SPORT_MRCS1 21 -#define SPORT_MRCS2 22 -#define SPORT_MRCS3 23 +/* 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 |
