diff options
Diffstat (limited to 'bsps/powerpc/include/mpc83xx/mpc83xx_spidrv.h')
| -rw-r--r-- | bsps/powerpc/include/mpc83xx/mpc83xx_spidrv.h | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/bsps/powerpc/include/mpc83xx/mpc83xx_spidrv.h b/bsps/powerpc/include/mpc83xx/mpc83xx_spidrv.h new file mode 100644 index 0000000000..92fe66831a --- /dev/null +++ b/bsps/powerpc/include/mpc83xx/mpc83xx_spidrv.h @@ -0,0 +1,172 @@ +/*===============================================================*\ +| Project: RTEMS support for MPC83xx | ++-----------------------------------------------------------------+ +| Copyright (c) 2007 | +| Embedded Brains GmbH | +| Obere Lagerstr. 30 | +| D-82178 Puchheim | +| Germany | +| rtems@embedded-brains.de | ++-----------------------------------------------------------------+ +| 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. | +| | ++-----------------------------------------------------------------+ +| this file contains the MPC83xx SPI driver declarations | +| NOTE: this driver has the same API as a I2C driver | +\*===============================================================*/ +#ifndef _MPC83XX_SPIDRV_H +#define _MPC83XX_SPIDRV_H + +#include <mpc83xx/mpc83xx.h> +#include <rtems/libi2c.h> +#include <rtems/irq.h> + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct mpc83xx_spi_softc { + m83xxSPIRegisters_t *reg_ptr; + int initialized; + rtems_irq_number irq_number; + uint32_t base_frq; /* input frq for baud rate divider */ + rtems_id irq_sema_id; + uint32_t curr_addr; /* current spi address */ + uint32_t idle_char; + uint8_t bytes_per_char; + uint8_t bit_shift; +} mpc83xx_spi_softc_t ; + +typedef struct { + rtems_libi2c_bus_t bus_desc; + mpc83xx_spi_softc_t softc; +} mpc83xx_spi_desc_t; + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +rtems_status_code mpc83xx_spi_init +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| initialize the driver | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + rtems_libi2c_bus_t *bh /* bus specifier structure */ + ); +/*-------------------------------------------------------------------------*\ +| Return Value: | +| o = ok or error code | +\*=========================================================================*/ + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +int mpc83xx_spi_read_write_bytes +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| transmit/receive some bytes from SPI device | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + rtems_libi2c_bus_t *bh, /* bus specifier structure */ + unsigned char *rbuf, /* buffer to store bytes */ + const unsigned char *tbuf, /* buffer to send bytes */ + int len /* number of bytes to transceive */ + ); +/*-------------------------------------------------------------------------*\ +| Return Value: | +| number of bytes received or (negative) error code | +\*=========================================================================*/ + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +int mpc83xx_spi_read_bytes +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| receive some bytes from SPI device | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + rtems_libi2c_bus_t *bh, /* bus specifier structure */ + unsigned char *buf, /* buffer to store bytes */ + int len /* number of bytes to receive */ + ); +/*-------------------------------------------------------------------------*\ +| Return Value: | +| number of bytes received or (negative) error code | +\*=========================================================================*/ + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +int mpc83xx_spi_write_bytes +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| send some bytes to SPI device | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + rtems_libi2c_bus_t *bh, /* bus specifier structure */ + unsigned char *buf, /* buffer to send */ + int len /* number of bytes to send */ + + ); +/*-------------------------------------------------------------------------*\ +| Return Value: | +| number of bytes sent or (negative) error code | +\*=========================================================================*/ + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +rtems_status_code mpc83xx_spi_set_tfr_mode +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| set SPI to desired baudrate/clock mode/character mode | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + rtems_libi2c_bus_t *bh, /* bus specifier structure */ + const rtems_libi2c_tfr_mode_t *tfr_mode /* transfer mode info */ + ); +/*-------------------------------------------------------------------------*\ +| Return Value: | +| rtems_status_code | +\*=========================================================================*/ + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +int mpc83xx_spi_ioctl +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| perform selected ioctl function for SPI | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + rtems_libi2c_bus_t *bh, /* bus specifier structure */ + int cmd, /* ioctl command code */ + void *arg /* additional argument array */ + ); +/*-------------------------------------------------------------------------*\ +| Return Value: | +| rtems_status_code | +\*=========================================================================*/ + +#ifdef __cplusplus +} +#endif + + +#endif /* _MPC83XX_I2CDRV_H */ |