diff options
Diffstat (limited to 'bsps/m68k/gen68360/spi/m360_spi.c')
| -rw-r--r-- | bsps/m68k/gen68360/spi/m360_spi.c | 852 |
1 files changed, 852 insertions, 0 deletions
diff --git a/bsps/m68k/gen68360/spi/m360_spi.c b/bsps/m68k/gen68360/spi/m360_spi.c new file mode 100644 index 0000000000..f60b5b6a51 --- /dev/null +++ b/bsps/m68k/gen68360/spi/m360_spi.c @@ -0,0 +1,852 @@ +/*===============================================================*\ +| Project: RTEMS support for PGH360 | ++-----------------------------------------------------------------+ +| Copyright (c) 2008 | +| 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 M360 SPI driver | +\*===============================================================*/ +#include <stdlib.h> +#include <bsp.h> +#include <rtems/m68k/m68360.h> +#include <rtems/m68k/m360_spi.h> +#include <rtems/error.h> +#include <rtems/bspIo.h> +#include <errno.h> +#include <rtems/libi2c.h> + +#undef DEBUG +static m360_spi_softc_t *m360_spi_softc_ptr; +/* + * this is a dummy receive buffer for sequences, + * where only send data are available + */ +uint8_t m360_spi_dummy_rxbuf[2]; +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +static rtems_status_code m360_spi_baud_to_mode +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| determine proper divider value | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + uint32_t baudrate, /* desired baudrate */ + uint32_t *spimode /* result value */ +) +/*-------------------------------------------------------------------------*\ +| Return Value: | +| o = ok or error code | +\*=========================================================================*/ +{ + uint32_t divider; + uint16_t tmpmode = 0; + /* + * determine clock divider and DIV16 bit + */ + divider = m360_clock_rate/baudrate; + if (divider > 64) { + tmpmode = M360_SPMODE_DIV16; + divider /= 16; + } + if ((divider < 1) || + (divider > 64)) { + return RTEMS_INVALID_NUMBER; + } + else { + tmpmode |= M360_SPMODE_PM(divider/4-1); + } + *spimode = tmpmode; + return RTEMS_SUCCESSFUL; +} + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +static rtems_status_code m360_spi_char_mode +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| determine proper value for character size | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + m360_spi_softc_t *softc_ptr, /* handle */ + uint32_t bits_per_char, /* bits per character */ + bool lsb_first, /* TRUE: send LSB first */ + uint16_t *spimode /* result value */ +) +/*-------------------------------------------------------------------------*\ +| Return Value: | +| o = ok or error code | +\*=========================================================================*/ +{ + uint16_t tmpmode; + + /* + * calculate data format + */ + if ((bits_per_char >= 4) && + (bits_per_char <= 16)) { + tmpmode = M360_SPMODE_CLEN( bits_per_char-1); + } + else { + return RTEMS_INVALID_NUMBER; + } + + *spimode = tmpmode; + return 0; +} + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +static int m360_spi_wait +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| wait for spi to become idle | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + m360_spi_softc_t *softc_ptr /* handle */ +) +/*-------------------------------------------------------------------------*\ +| Return Value: | +| o = ok or error code | +\*=========================================================================*/ +{ + uint16_t act_status; + rtems_status_code rc; + uint32_t tout; + +#if defined(DEBUG) + printk("m360_spi_wait called... "); +#endif + if (softc_ptr->initialized) { + /* + * allow interrupts, when receiver is not empty + */ + m360.spim = (M360_SPIE_TXE | M360_SPIE_TXB | + M360_SPIE_BSY | M360_SPIE_MME); + + rc = rtems_semaphore_obtain(softc_ptr->irq_sema_id, + RTEMS_WAIT, + RTEMS_NO_TIMEOUT); + if (rc != RTEMS_SUCCESSFUL) { + return rc; + } + } + else { + tout = 0; + do { + if (tout++ > 1000000) { +#if defined(DEBUG) + printk("... exit with RTEMS_TIMEOUT\r\n"); +#endif + return RTEMS_TIMEOUT; + } + /* + * wait for SPI to terminate + */ + } while (!(m360.spie & M360_SPIE_TXB)); + } + + act_status = m360.spie; + if ((act_status & (M360_SPIE_TXE | M360_SPIE_TXB | + M360_SPIE_BSY | M360_SPIE_MME))!= M360_SPIE_TXB) { +#if defined(DEBUG) + printk("... exit with RTEMS_IO_ERROR," + "act_status=0x%04x,mask=0x%04x,desired_status=0x%04x\r\n", + act_status,status_mask,desired_status); +#endif + return RTEMS_IO_ERROR; + } +#if defined(DEBUG) + printk("... exit OK\r\n"); +#endif + return RTEMS_SUCCESSFUL; +} + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +static rtems_isr m360_spi_irq_handler +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| handle interrupts | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + rtems_vector_number v /* vector number */ +) +/*-------------------------------------------------------------------------*\ +| Return Value: | +| <none> | +\*=========================================================================*/ +{ + m360_spi_softc_t *softc_ptr = m360_spi_softc_ptr; + + /* + * disable interrupt mask + */ + m360.spim = 0; + if (softc_ptr->initialized) { + rtems_semaphore_release(softc_ptr->irq_sema_id); + } +} + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +static void m360_spi_install_irq_handler +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| (un-)install the interrupt handler | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + m360_spi_softc_t *softc_ptr, /* ptr to control structure */ + int install /* TRUE: install, FALSE: remove */ +) +/*-------------------------------------------------------------------------*\ +| Return Value: | +| <none> | +\*=========================================================================*/ +{ + rtems_status_code rc = RTEMS_SUCCESSFUL; + + /* + * (un-)install handler for SPI device + */ + if (install) { + /* + * create semaphore for IRQ synchronization + */ + rc = rtems_semaphore_create(rtems_build_name('s','p','i','s'), + 0, + RTEMS_FIFO + | RTEMS_SIMPLE_BINARY_SEMAPHORE, + 0, + &softc_ptr->irq_sema_id); + if (rc != RTEMS_SUCCESSFUL) { + rtems_panic("SPI: cannot create semaphore"); + } + if (rc == RTEMS_SUCCESSFUL) { + rc = rtems_interrupt_catch (m360_spi_irq_handler, + (m360.cicr & 0xE0) | 0x05, + &softc_ptr->old_handler); + if (rc != RTEMS_SUCCESSFUL) { + rtems_panic("SPI: cannot install IRQ handler"); + } + } + /* + * enable IRQ in CPIC + */ + if (rc == RTEMS_SUCCESSFUL) { + m360.cimr |= (1 << 5); + } + } + else { + rtems_isr_entry old_handler; + /* + * disable IRQ in CPIC + */ + if (rc == RTEMS_SUCCESSFUL) { + m360.cimr &= ~(1 << 5); + } + rc = rtems_interrupt_catch (softc_ptr->old_handler, + (m360.cicr & 0xE0) | 0x05, + &old_handler); + if (rc != RTEMS_SUCCESSFUL) { + rtems_panic("SPI: cannot uninstall IRQ handler"); + } + /* + * delete sync semaphore + */ + if (softc_ptr->irq_sema_id != 0) { + rc = rtems_semaphore_delete(softc_ptr->irq_sema_id); + if (rc != RTEMS_SUCCESSFUL) { + rtems_panic("SPI: cannot delete semaphore"); + } + } + } +} + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +rtems_status_code m360_spi_init +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| initialize the driver | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + rtems_libi2c_bus_t *bh /* bus specifier structure */ +) +/*-------------------------------------------------------------------------*\ +| Return Value: | +| o = ok or error code | +\*=========================================================================*/ +{ + m360_spi_softc_t *softc_ptr = &(((m360_spi_desc_t *)(bh))->softc); + rtems_status_code rc = RTEMS_SUCCESSFUL; + +#if defined(DEBUG) + printk("m360_spi_init called... "); +#endif + /* + * init HW registers: + */ + /* + * FIXME: set default mode in SPMODE + */ + + /* + * allocate BDs (1x RX, 1x TX) + */ + if (rc == RTEMS_SUCCESSFUL) { + softc_ptr->rx_bd = M360AllocateBufferDescriptors (1); + softc_ptr->tx_bd = M360AllocateBufferDescriptors (1); + if ((softc_ptr->rx_bd == NULL) || + (softc_ptr->tx_bd == NULL)) { + rc = RTEMS_NO_MEMORY; + } + } + /* + * set parameter RAM + */ + m360.spip.rbase = (char *)softc_ptr->rx_bd - (char *)&m360; + m360.spip.tbase = (char *)softc_ptr->tx_bd - (char *)&m360; + m360.spip.rfcr = M360_RFCR_MOT | M360_RFCR_DMA_SPACE; + m360.spip.tfcr = M360_RFCR_MOT | M360_RFCR_DMA_SPACE; + m360.spip.mrblr = 2; + + /* + * issue "InitRxTx" Command to CP + */ + M360ExecuteRISC (M360_CR_OP_INIT_RX_TX | M360_CR_CHAN_SPI); + + /* + * init interrupt stuff + */ + if (rc == RTEMS_SUCCESSFUL) { + m360_spi_install_irq_handler(softc_ptr,TRUE); + } + if (rc == RTEMS_SUCCESSFUL) { + /* + * set up ports + * LINE PAR DIR DAT + * ----------------------- + * MOSI 1 1 x + * MISO 1 1 x + * CLK 1 1 x + */ + + /* set Port B Pin Assignment Register... */ + m360.pbpar = + m360.pbpar + | M360_PB_SPI_MISO_MSK + | M360_PB_SPI_MOSI_MSK + | M360_PB_SPI_CLK_MSK; + + /* set Port B Data Direction Register... */ + m360.pbdir = + m360.pbdir + | M360_PB_SPI_MISO_MSK + | M360_PB_SPI_MOSI_MSK + | M360_PB_SPI_CLK_MSK; + } + /* + * mark, that we have initialized + */ + if (rc == RTEMS_SUCCESSFUL) { + softc_ptr->initialized = TRUE; + } +#if defined(DEBUG) + printk("... exit OK\r\n"); +#endif + return rc; +} + + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +static int m360_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 | +\*=========================================================================*/ +{ + m360_spi_softc_t *softc_ptr = &(((m360_spi_desc_t *)(bh))->softc); + rtems_status_code rc = RTEMS_SUCCESSFUL; + int bc = 0; + +#if defined(DEBUG) + printk("m360_spi_read_write_bytes called... "); +#endif + + /* + * prepare RxBD + */ + if (rc == RTEMS_SUCCESSFUL) { + if (rbuf == NULL) { + /* + * no Tx buffer: receive to dummy buffer + */ + m360.spip.mrblr = sizeof(m360_spi_dummy_rxbuf); + softc_ptr->rx_bd->buffer = m360_spi_dummy_rxbuf; + softc_ptr->rx_bd->length = 0; + softc_ptr->rx_bd->status = (M360_BD_EMPTY | M360_BD_WRAP | + M360_BD_CONTINUOUS); + } + else { + m360.spip.mrblr = len; + softc_ptr->rx_bd->buffer = rbuf; + softc_ptr->rx_bd->length = 0; + softc_ptr->rx_bd->status = (M360_BD_EMPTY | M360_BD_WRAP); + } + } + /* + * prepare TxBD + */ + if (rc == RTEMS_SUCCESSFUL) { + if (tbuf == NULL) { + /* + * FIXME: no Tx buffer: transmit from dummy buffer + */ + softc_ptr->tx_bd->buffer = m360_spi_dummy_rxbuf; + softc_ptr->tx_bd->length = len; + softc_ptr->tx_bd->status = (M360_BD_READY | M360_BD_WRAP | + M360_BD_CONTINUOUS); + } + else { + softc_ptr->tx_bd->buffer = tbuf; + softc_ptr->tx_bd->length = len; + softc_ptr->tx_bd->status = (M360_BD_READY | M360_BD_WRAP); + } + } + + if (rc == RTEMS_SUCCESSFUL) { + /* + * set START command + */ + m360.spcom = M360_SPCOM_STR; + /* + * wait for SPI to finish + */ + rc = m360_spi_wait(softc_ptr); + } +#if defined(DEBUG) + printk("... exit OK, rc=%d\r\n",bc); +#endif + return (rc == RTEMS_SUCCESSFUL) ? bc : -rc; +} + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +int m360_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 | +\*=========================================================================*/ +{ + return m360_spi_read_write_bytes(bh,buf,NULL,len); +} + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +int m360_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 | +\*=========================================================================*/ +{ + return m360_spi_read_write_bytes(bh,NULL,buf,len); +} + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +rtems_status_code m360_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 | +\*=========================================================================*/ +{ + m360_spi_softc_t *softc_ptr = &(((m360_spi_desc_t *)(bh))->softc); + uint32_t spimode_baud,spimode; + rtems_status_code rc = RTEMS_SUCCESSFUL; + /* + * FIXME: set proper mode + */ + if (rc == RTEMS_SUCCESSFUL) { + rc = m360_spi_baud_to_mode(tfr_mode->baudrate,&spimode_baud); + } + if (rc == RTEMS_SUCCESSFUL) { + rc = m360_spi_char_mode(softc_ptr, + tfr_mode->bits_per_char, + tfr_mode->lsb_first, + &spimode); + } + if (rc == RTEMS_SUCCESSFUL) { + spimode |= spimode_baud; + spimode |= M360_SPMODE_MASTER; /* set master mode */ + if (!tfr_mode->lsb_first) { + spimode |= M360_SPMODE_REV; + } + if (tfr_mode->clock_inv) { + spimode |= M360_SPMODE_CI; + } + if (tfr_mode->clock_phs) { + spimode |= M360_SPMODE_CP; + } + } + + if (rc == RTEMS_SUCCESSFUL) { + /* + * disable SPI + */ + m360.spmode &= ~M360_SPMODE_EN; + /* + * set new mode and reenable SPI + */ + m360.spmode = spimode | M360_SPMODE_EN; + } + return rc; +} + + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +int m360_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 | +\*=========================================================================*/ +{ + int ret_val = -1; + + switch(cmd) { + case RTEMS_LIBI2C_IOCTL_SET_TFRMODE: + ret_val = + -m360_spi_set_tfr_mode(bh, + (const rtems_libi2c_tfr_mode_t *)arg); + break; + case RTEMS_LIBI2C_IOCTL_READ_WRITE: + ret_val = + m360_spi_read_write_bytes(bh, + ((rtems_libi2c_read_write_t *)arg)->rd_buf, + ((rtems_libi2c_read_write_t *)arg)->wr_buf, + ((rtems_libi2c_read_write_t *)arg)->byte_cnt); + break; + default: + ret_val = -RTEMS_NOT_DEFINED; + break; + } + return ret_val; +} + +/*=========================================================================*\ +| Board-specific adaptation functions | +\*=========================================================================*/ + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +static rtems_status_code bsp_spi_sel_addr +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| address a slave device on the bus | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + rtems_libi2c_bus_t *bh, /* bus specifier structure */ + uint32_t addr, /* address to send on bus */ + int rw /* 0=write,1=read */ +) +/*-------------------------------------------------------------------------*\ +| Return Value: | +| o = ok or error code | +\*=========================================================================*/ +{ +#if defined(PGH360) + /* + * select given device + */ + /* + * GPIO1[24] is SPI_A0 + * GPIO1[25] is SPI_A1 + * GPIO1[26] is SPI_A2 + * set pins to address + */ + switch(addr) { + case PGH360_SPI_ADDR_EEPROM: + m360.pbdat &= ~PGH360_PB_SPI_EEP_CE_MSK; + break; + case PGH360_SPI_ADDR_DISP4_DATA: + m360.pbdat = (m360.pbdat + & ~(PGH360_PB_SPI_DISP4_CE_MSK | + PGH360_PB_SPI_DISP4_RS_MSK)); + break; + case PGH360_SPI_ADDR_DISP4_CTRL: + m360.pbdat = (m360.pbdat + & ~(PGH360_PB_SPI_DISP4_CE_MSK) + | PGH360_PB_SPI_DISP4_RS_MSK); + break; + default: + return RTEMS_INVALID_NUMBER; + } +#endif /* PGH360 */ + return RTEMS_SUCCESSFUL; +} + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +static rtems_status_code bsp_spi_send_start_dummy +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| dummy function, SPI has no start condition | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + rtems_libi2c_bus_t *bh /* bus specifier structure */ +) +/*-------------------------------------------------------------------------*\ +| Return Value: | +| o = ok or error code | +\*=========================================================================*/ +{ + return 0; +} + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +static rtems_status_code bsp_spi_send_stop +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| deselect SPI | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + rtems_libi2c_bus_t *bh /* bus specifier structure */ +) +/*-------------------------------------------------------------------------*\ +| Return Value: | +| o = ok or error code | +\*=========================================================================*/ +{ +#if defined(DEBUG) + printk("bsp_spi_send_stop called... "); +#endif +#if defined(PGH360) + m360.pbdat = (m360.pbdat + | PGH360_PB_SPI_DISP4_CE_MSK + | PGH360_PB_SPI_EEP_CE_MSK); +#endif +#if defined(DEBUG) + printk("... exit OK\r\n"); +#endif + return 0; +} + +/*=========================================================================*\ +| list of handlers | +\*=========================================================================*/ + +rtems_libi2c_bus_ops_t bsp_spi_ops = { + init: m360_spi_init, + send_start: bsp_spi_send_start_dummy, + send_stop: bsp_spi_send_stop, + send_addr: bsp_spi_sel_addr, + read_bytes: m360_spi_read_bytes, + write_bytes: m360_spi_write_bytes, + ioctl: m360_spi_ioctl +}; + +static m360_spi_desc_t bsp_spi_bus_desc = { + {/* public fields */ + ops: &bsp_spi_ops, + size: sizeof(bsp_spi_bus_desc) + }, + { /* our private fields */ + initialized: FALSE + } +}; + +/*=========================================================================*\ +| initialization | +\*=========================================================================*/ + +/*=========================================================================*\ +| Function: | +\*-------------------------------------------------------------------------*/ +rtems_status_code bsp_register_spi +( +/*-------------------------------------------------------------------------*\ +| Purpose: | +| register SPI bus and devices | ++---------------------------------------------------------------------------+ +| Input Parameters: | +\*-------------------------------------------------------------------------*/ + void /* <none> */ +) +/*-------------------------------------------------------------------------*\ +| Return Value: | +| 0 or error code | +\*=========================================================================*/ +{ + int ret_code; + int spi_busno; + + /* + * init I2C library (if not already done) + */ + rtems_libi2c_initialize (); + + /* + * init port pins used to address/select SPI devices + */ + +#if defined(PGH360) + + /* + * set up ports + * LINE PAR DIR DAT + * ----------------------- + * EEP_CE 0 1 act-high + * DISP4_CS 0 1 act-high + * DISP4_RS 0 1 active + */ + + /* set Port B Pin Assignment Register... */ + m360.pbpar = + (m360.pbpar + & ~(PGH360_PB_SPI_EEP_CE_MSK + | PGH360_PB_SPI_DISP4_CE_MSK + | PGH360_PB_SPI_DISP4_RS_MSK)); + + /* set Port B Data Direction Register... */ + m360.pbdir = + m360.pbdir + | PGH360_PB_SPI_EEP_CE_MSK + | PGH360_PB_SPI_DISP4_CE_MSK + | PGH360_PB_SPI_DISP4_RS_MSK; + + /* set Port B Data Register to inactive CE state */ + m360.pbdat = + m360.pbdat + | PGH360_PB_SPI_DISP4_CE_MSK + | PGH360_PB_SPI_DISP4_RS_MSK; +#endif + + /* + * register SPI bus + */ + ret_code = rtems_libi2c_register_bus("/dev/spi", + &(bsp_spi_bus_desc.bus_desc)); + if (ret_code < 0) { + return -ret_code; + } + spi_busno = ret_code; +#if defined(PGH360) + /* + * register devices + */ +#if 0 + ret_code = rtems_libi2c_register_drv(RTEMS_BSP_SPI_FLASH_DEVICE_NAME, + spi_flash_m25p40_rw_driver_descriptor, + spi_busno,0x00); + if (ret_code < 0) { + return -ret_code; + } +#endif +#endif /* defined(PGH360) */ + /* + * FIXME: further drivers, when available + */ + return 0; +} + + |