diff options
Diffstat (limited to 'bsps/bfin/include/libcpu/twiRegs.h')
| -rw-r--r-- | bsps/bfin/include/libcpu/twiRegs.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/bsps/bfin/include/libcpu/twiRegs.h b/bsps/bfin/include/libcpu/twiRegs.h new file mode 100644 index 0000000000..c776f7886e --- /dev/null +++ b/bsps/bfin/include/libcpu/twiRegs.h @@ -0,0 +1,118 @@ +/* Blackfin Two Wire Interface Registers + * + * Copyright (c) 2008 Kallisti Labs, Los Gatos, CA, USA + * written by Allan Hessenflow <allanh@kallisti.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#ifndef _twiRegs_h_ +#define _twiRegs_h_ + + +/* register addresses */ + +#define TWI_CLKDIV_OFFSET 0x0000 +#define TWI_CONTROL_OFFSET 0x0004 +#define TWI_SLAVE_CTL_OFFSET 0x0008 +#define TWI_SLAVE_STAT_OFFSET 0x000c +#define TWI_SLAVE_ADDR_OFFSET 0x0010 +#define TWI_MASTER_CTL_OFFSET 0x0014 +#define TWI_MASTER_STAT_OFFSET 0x0018 +#define TWI_MASTER_ADDR_OFFSET 0x001c +#define TWI_INT_STAT_OFFSET 0x0020 +#define TWI_INT_MASK_OFFSET 0x0024 +#define TWI_FIFO_CTL_OFFSET 0x0028 +#define TWI_FIFO_STAT_OFFSET 0x002c +#define TWI_XMT_DATA8_OFFSET 0x0080 +#define TWI_XMT_DATA16_OFFSET 0x0084 +#define TWI_RCV_DATA8_OFFSET 0x0088 +#define TWI_RCV_DATA16_OFFSET 0x008c + + +/* register fields */ + +#define TWI_CLKDIV_CLKHI_MASK 0xff00 +#define TWI_CLKDIV_CLKHI_SHIFT 8 +#define TWI_CLKDIV_CLKLOW_MASK 0x00ff +#define TWI_CLKDIV_CLKLOW_SHIFT 0 + +#define TWI_CONTROL_SCCB 0x0200 +#define TWI_CONTROL_TWI_ENA 0x0080 +#define TWI_CONTROL_PRESCALE_MASK 0x007f +#define TWI_CONTROL_PRESCALE_SHIFT 0 + +#define TWI_SLAVE_CTL_GEN 0x0010 +#define TWI_SLAVE_CTL_NAK 0x0008 +#define TWI_SLAVE_CTL_STDVAL 0x0004 +#define TWI_SLAVE_CTL_SEN 0x0001 + +#define TWI_SLAVE_STAT_GCALL 0x0002 +#define TWI_SLAVE_STAT_SDIR 0x0001 + +#define TWI_SLAVE_ADDR_SADDR_MASK 0x007f +#define TWI_SLAVE_ADDR_SADDR_SHIFT 0 + +#define TWI_MASTER_CTL_SCLOVR 0x8000 +#define TWI_MASTER_CTL_SDAOVR 0x4000 +#define TWI_MASTER_CTL_DCNT_MASK 0x3fc0 +#define TWI_MASTER_CTL_DCNT_SHIFT 6 +#define TWI_MASTER_CTL_RSTART 0x0020 +#define TWI_MASTER_CTL_STOP 0x0010 +#define TWI_MASTER_CTL_FAST 0x0008 +#define TWI_MASTER_CTL_MDIR 0x0004 +#define TWI_MASTER_CTL_MEN 0x0001 + +#define TWI_MASTER_STAT_BUSBUSY 0x0100 +#define TWI_MASTER_STAT_SCLSEN 0x0080 +#define TWI_MASTER_STAT_SDASEN 0x0040 +#define TWI_MASTER_STAT_BUFWRERR 0x0020 +#define TWI_MASTER_STAT_BUFRDERR 0x0010 +#define TWI_MASTER_STAT_DNAK 0x0008 +#define TWI_MASTER_STAT_ANAK 0x0004 +#define TWI_MASTER_STAT_LOSTARB 0x0002 +#define TWI_MASTER_STAT_MPROG 0x0001 + +#define TWI_MASTER_ADDR_MADDR_MASK 0x007f +#define TWI_MASTER_ADDR_MADDR_SHIFT 0 + +#define TWI_INT_STAT_RCVSERV 0x0080 +#define TWI_INT_STAT_XMTSERV 0x0040 +#define TWI_INT_STAT_MERR 0x0020 +#define TWI_INT_STAT_MCOMP 0x0010 +#define TWI_INT_STAT_SOVF 0x0008 +#define TWI_INT_STAT_SERR 0x0004 +#define TWI_INT_STAT_SCOMP 0x0002 +#define TWI_INT_STAT_SINIT 0x0001 + +#define TWI_INT_MASK_RCVSERVM 0x0080 +#define TWI_INT_MASK_XMTSERVM 0x0040 +#define TWI_INT_MASK_MERRM 0x0020 +#define TWI_INT_MASK_MCOMPM 0x0010 +#define TWI_INT_MASK_SOVFM 0x0008 +#define TWI_INT_MASK_SERRM 0x0004 +#define TWI_INT_MASK_SCOMPM 0x0002 +#define TWI_INT_MASK_SINITM 0x0001 + +#define TWI_FIFO_CTL_RCVINTLEN 0x0008 +#define TWI_FIFO_CTL_XMTINTLEN 0x0004 +#define TWI_FIFO_CTL_RCVFLUSH 0x0002 +#define TWI_FIFO_CTL_XMTFLUSH 0x0001 + +#define TWI_FIFO_STAT_RCVSTAT_MASK 0x000c +#define TWI_FIFO_STAT_RCVSTAT_EMPTY 0x0000 +#define TWI_FIFO_STAT_RCVSTAT_SHIFT 2 +#define TWI_FIFO_STAT_XMTSTAT_MASK 0x0003 +#define TWI_FIFO_STAT_XMTSTAT_FULL 0x0003 +#define TWI_FIFO_STAT_XMTSTAT_SHIFT 0 + +#define TWI_XMT_DATA8_XMTDATA8_MASK 0x00ff +#define TWI_XMT_DATA8_XMTDATA8_SHIFT 0 + +#define TWI_RCV_DATA8_RCVDATA8_MASK 0x00ff +#define TWI_RCV_DATA8_RCVDATA8_SHIFT 0 + + +#endif /* _twiRegs_h_ */ |