diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc/shared/include/spictrl.h')
| -rw-r--r-- | c/src/lib/libbsp/sparc/shared/include/spictrl.h | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/include/spictrl.h b/c/src/lib/libbsp/sparc/shared/include/spictrl.h deleted file mode 100644 index 98922fbd30..0000000000 --- a/c/src/lib/libbsp/sparc/shared/include/spictrl.h +++ /dev/null @@ -1,126 +0,0 @@ -/* - * SPICTRL SPI Driver interface. - * - * COPYRIGHT (c) 2009. - * Cobham Gaisler AB. - * - * 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 __SPICTRL_H__ -#define __SPICTRL_H__ - -#ifdef __cplusplus -extern "C" { -#endif - -extern void spictrl_register_drv (void); - -/*** REGISTER LAYOUT ***/ -struct spictrl_regs { - volatile unsigned int capability; /* 0x00 */ - volatile unsigned int resv[7]; /* 0x04 */ - volatile unsigned int mode; /* 0x20 */ - volatile unsigned int event; /* 0x24 */ - volatile unsigned int mask; /* 0x28 */ - volatile unsigned int command; /* 0x2c */ - volatile unsigned int tx; /* 0x30 */ - volatile unsigned int rx; /* 0x34 */ - volatile unsigned int slvsel; /* 0x38 */ - volatile unsigned int am_slvsel; /* 0x3c */ - volatile unsigned int am_cfg; /* 0x40 */ - volatile unsigned int am_period; /* 0x44 */ - int reserved0[2]; - volatile unsigned int am_mask[4]; /* 0x50-0x5C */ - int reserved1[(0x200-0x60)/4]; - volatile unsigned int am_tx[128]; /* 0x200-0x3FC */ - volatile unsigned int am_rx[128]; /* 0x400-0x5FC */ -}; - -/* -- About automated periodic transfer mode -- - * - * Core must support this feature. - * - * The SPI core must be configured in periodic mode before - * writing the data into the transfer FIFO which will be used - * mutiple times in different transfers, it will also make - * the receive FIFO to be updated. - * - * In periodic mode the following sequence is performed, - * 1. start() - * 2. ioctl(CONFIG, &config) - Enable periodic mode - * 3. set_address() - * 4. write() - Fills TX FIFO, this has some constraints - * 5. ioctl(START) - Starts the periodic transmission of the TX FIFO - * 6. read() - Read one response of the tranistted data. It will - * hang until data is available. If hanging is not an - * options use ioctl(STATUS) - * 7. go back to 6. - * - * 8. ioctl(STOP) - Stop to set up a new periodic or normal transfer - * 9. stop() - * - * Note that the the read length must equal the total write length. - */ - -/* Custom SPICTRL driver ioctl commands */ -#define SPICTRL_IOCTL_PERIOD_START 5000 /* Start automated periodic transfer mode */ -#define SPICTRL_IOCTL_PERIOD_STOP 5001 /* Stop to SPI core from doing periodic transfers */ -#define SPICTRL_IOCTL_CONFIG 5002 /* Configure Periodic transfer mode (before calling write() and START) */ -#define SPICTRL_IOCTL_STATUS 5003 /* Get status */ - -#define SPICTRL_IOCTL_PERIOD_READ 5005 /* Write transmit registers and mask register - * (only in automatic periodic mode) - * Note that it is probably prefferred to read - * the received words using the read() using - * operations instead. - */ -#define SPICTRL_IOCTL_PERIOD_WRITE 5006 /* Read receive registers and mask register - * (only in automatic periodic mode) */ -#define SPICTRL_IOCTL_REGS 5007 /* Get SPICTRL Register */ - -/* SPICTRL_IOCTL_CONFIG argument */ -struct spictrl_ioctl_config { - int clock_gap; /* Clock GAP between */ - unsigned int flags; /* Normal mode flags */ - int periodic_mode; /* 1=Enables Automated periodic transfers if supported by hardware */ - unsigned int period; /* Number of clocks between automated transfers are started */ - unsigned int period_flags; /* Options */ - unsigned int period_slvsel; /* Slave Select when transfer is not active, default is 0xffffffff */ -}; -#define SPICTRL_FLAGS_TAC 0x10 - -#define SPICTRL_PERIOD_FLAGS_ERPT 0x80 /* Trigger start-period from external signal */ -#define SPICTRL_PERIOD_FLAGS_SEQ 0x40 -#define SPICTRL_PERIOD_FLAGS_STRICT 0x20 -#define SPICTRL_PERIOD_FLAGS_OVTB 0x10 -#define SPICTRL_PERIOD_FLAGS_OVDB 0x08 -#define SPICTRL_PERIOD_FLAGS_ASEL 0x04 -#define SPICTRL_PERIOD_FLAGS_EACT 0x01 - -/* SPICTRL_IOCTL_PERIOD_READ and SPICTRL_IOCTL_PERIOD_WRITE Argument data structure - * - * Note that the order of reading the mask registers are different for read/write - * operation. See options notes. - */ -struct spictrl_period_io { - int options; /* READ: bit0=Read Mask Registers into masks[]. - * bit1=Read Receive registers according to masks[] - * (after reading masks). - * - * WRITE: bit0=Update Mask accoring to masks[]. - * bit1=Update Transmit registers according to masks[]. - * (before reading masks) - */ - unsigned int masks[4]; - - void *data; /* Data read sequentially according to masks[] bit. */ -}; - -#ifdef __cplusplus -} -#endif - -#endif |