From: John Crispin Date: Sat, 15 Dec 2007 16:31:43 +0000 (+0000) Subject: danube ssc cleanup X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=bad4fdd1f55955cb88b8301f2efc1b9205055f79;p=openwrt%2Fstaging%2Faparcar.git danube ssc cleanup SVN-Revision: 9766 --- diff --git a/target/linux/danube/files/drivers/char/danube_ssc.c b/target/linux/danube/files/drivers/char/danube_ssc.c index c8599906d7..c19843f250 100644 --- a/target/linux/danube/files/drivers/char/danube_ssc.c +++ b/target/linux/danube/files/drivers/char/danube_ssc.c @@ -92,7 +92,6 @@ int ifx_ssc_close (struct inode *, struct file *); static unsigned int ifx_ssc_get_kernel_clk (struct ifx_ssc_port *info); static void tx_int (struct ifx_ssc_port *); static int ifx_ssc1_read_proc (char *, char **, off_t, int, int *, void *); -static void ifx_gpio_init (void); extern unsigned int danube_get_fpi_hz (void); extern void mask_and_ack_danube_irq (unsigned int irq_nr); @@ -600,7 +599,7 @@ ifx_ssc_read_helper (struct ifx_ssc_port *info, char *buf, size_t len, (info->txbuf != info->txbuf_ptr) || (info->txbuf_end != len + info->txbuf)) { local_irq_restore (flags); - printk ("IFX SSC - %s: write must be called before calling " "read in combined RX/TX!\n", __FUNCTION__); + printk ("IFX SSC - %s: write must be called before calling " "read in combined RX/TX!\n", __func__); return -EFAULT; } local_irq_restore (flags); @@ -773,10 +772,6 @@ ifx_ssc_read (struct file *filp, char *ubuf, size_t len, loff_t * off) int idx; struct ifx_ssc_port *info; -/* - if (len == 0) - return (0); -*/ idx = MINOR (filp->f_dentry->d_inode->i_rdev); info = &isp[idx]; @@ -885,36 +880,28 @@ ifx_ssc_frm_control_set (struct ifx_ssc_port *info) unsigned long tmp; // check parameters - if ((info->frm_opts.DataLength > IFX_SSC_SFCON_DATA_LENGTH_MAX) || - (info->frm_opts.DataLength < 1) || - (info->frm_opts.PauseLength > IFX_SSC_SFCON_PAUSE_LENGTH_MAX) || - (info->frm_opts.PauseLength < 1) || - ((info->frm_opts.IdleData & ~(IFX_SSC_SFCON_PAUSE_DATA_MASK >> - IFX_SSC_SFCON_PAUSE_DATA_OFFSET)) != - 0) - || - ((info->frm_opts. - IdleClock & ~(IFX_SSC_SFCON_PAUSE_CLOCK_MASK >> - IFX_SSC_SFCON_PAUSE_CLOCK_OFFSET)) != 0)) + if ((info->frm_opts.DataLength > IFX_SSC_SFCON_DATA_LENGTH_MAX) + || (info->frm_opts.DataLength < 1) + || (info->frm_opts.PauseLength > IFX_SSC_SFCON_PAUSE_LENGTH_MAX) + || (info->frm_opts.PauseLength < 1) + || (info->frm_opts.IdleData & ~(IFX_SSC_SFCON_PAUSE_DATA_MASK >> IFX_SSC_SFCON_PAUSE_DATA_OFFSET)) + || (info->frm_opts.IdleClock & ~(IFX_SSC_SFCON_PAUSE_CLOCK_MASK >> IFX_SSC_SFCON_PAUSE_CLOCK_OFFSET))) return -EINVAL; // read interrupt bits (they're not changed here) tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_SFCON) & - (IFX_SSC_SFCON_FIR_ENABLE_BEFORE_PAUSE | - IFX_SSC_SFCON_FIR_ENABLE_AFTER_PAUSE); + (IFX_SSC_SFCON_FIR_ENABLE_BEFORE_PAUSE | IFX_SSC_SFCON_FIR_ENABLE_AFTER_PAUSE); // set all values with respect to it's bit position (for data and pause // length set N-1) - tmp = (info->frm_opts.DataLength - - 1) << IFX_SSC_SFCON_DATA_LENGTH_OFFSET; - tmp |= (info->frm_opts.PauseLength - - 1) << IFX_SSC_SFCON_PAUSE_LENGTH_OFFSET; + tmp = (info->frm_opts.DataLength - 1) << IFX_SSC_SFCON_DATA_LENGTH_OFFSET; + tmp |= (info->frm_opts.PauseLength - 1) << IFX_SSC_SFCON_PAUSE_LENGTH_OFFSET; tmp |= info->frm_opts.IdleData << IFX_SSC_SFCON_PAUSE_DATA_OFFSET; tmp |= info->frm_opts.IdleClock << IFX_SSC_SFCON_PAUSE_CLOCK_OFFSET; tmp |= info->frm_opts.FrameEnable * IFX_SSC_SFCON_SF_ENABLE; tmp |= info->frm_opts.StopAfterPause * IFX_SSC_SFCON_STOP_AFTER_PAUSE; - WRITE_PERIPHERAL_REGISTER (tmp, info->mapbase + IFX_SSC_SFCON); + WRITE_PERIPHERAL_REGISTER(tmp, info->mapbase + IFX_SSC_SFCON); return 0; } @@ -924,47 +911,18 @@ ifx_ssc_rxtx_mode_set (struct ifx_ssc_port *info, unsigned int val) { unsigned long tmp; - // check parameters if (!(info) || (val & ~(IFX_SSC_MODE_MASK))) return -EINVAL; - /*check BUSY and RXCNT */ - if (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & - IFX_SSC_STATE_BUSY - || READ_PERIPHERAL_REGISTER (info->mapbase + - IFX_SSC_RXCNT) & - IFX_SSC_RXCNT_TODO_MASK) + + if ((READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_BUSY) + || (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RXCNT) & IFX_SSC_RXCNT_TODO_MASK)) return -EBUSY; - // modify - tmp = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_CON) & - ~(IFX_SSC_CON_RX_OFF | IFX_SSC_CON_TX_OFF)) | (val); + + tmp = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_CON) & ~(IFX_SSC_CON_RX_OFF | IFX_SSC_CON_TX_OFF)) | (val); WRITE_PERIPHERAL_REGISTER (tmp, info->mapbase + IFX_SSC_CON); info->opts.modeRxTx = val; - return 0; -} - -void -ifx_gpio_init (void) -{ - /* TODO: P0.9 SPI_CS4, P0.10 SPI_CS5, P 0.11 SPI_CS6, because of ASC0 */ - /* p0.15 SPI_CS1(EEPROM), P0.13 SPI_CS3, */ - /* Set p0.15 to alternative 01, others to 00 (In/OUT) */ - *(DANUBE_GPIO_P0_DIR) = (*DANUBE_GPIO_P0_DIR) | (0xA000); - *(DANUBE_GPIO_P0_ALTSEL0) = - (((*DANUBE_GPIO_P0_ALTSEL0) | (0x8000)) & (~(0x2000))); - *(DANUBE_GPIO_P0_ALTSEL1) = - (((*DANUBE_GPIO_P0_ALTSEL1) & (~0x8000)) & (~(0x2000))); - *(DANUBE_GPIO_P0_OD) = (*DANUBE_GPIO_P0_OD) | 0xA000; - - /* p1.6 SPI_CS2(SFLASH), p1.0 SPI_DIN, p1.1 SPI_DOUT, p1.2 SPI_CLK */ - *(DANUBE_GPIO_P1_DIR) = ((*DANUBE_GPIO_P1_DIR) | (0x46)) & (~1); - *(DANUBE_GPIO_P1_ALTSEL0) = ((*DANUBE_GPIO_P1_ALTSEL0) | (0x47)); - *(DANUBE_GPIO_P1_ALTSEL1) = (*DANUBE_GPIO_P1_ALTSEL1) & (~0x47); - *(DANUBE_GPIO_P1_OD) = (*DANUBE_GPIO_P1_OD) | 0x0046; - - /*CS3 */ - /*TODO: CS4 CS5 CS6 */ - *DANUBE_GPIO_P0_OUT = ((*DANUBE_GPIO_P0_OUT) | 0x2000); + return 0; } static int @@ -973,16 +931,13 @@ ifx_ssc_sethwopts (struct ifx_ssc_port *info) unsigned long flags, bits; struct ifx_ssc_hwopts *opts = &info->opts; - /* sanity checks */ - if ((opts->dataWidth < IFX_SSC_MIN_DATA_WIDTH) || - (opts->dataWidth > IFX_SSC_MAX_DATA_WIDTH)) { - printk ("%s: sanity check failed\n", __FUNCTION__); + if ((opts->dataWidth < IFX_SSC_MIN_DATA_WIDTH) + || (opts->dataWidth > IFX_SSC_MAX_DATA_WIDTH)) return -EINVAL; - } + bits = (opts->dataWidth - 1) << IFX_SSC_CON_DATA_WIDTH_OFFSET; bits |= IFX_SSC_CON_ENABLE_BYTE_VALID; - // if (opts->abortErrDetect) - // bits |= IFX_SSC_CON_ABORT_ERR_CHECK; + if (opts->rxOvErrDetect) bits |= IFX_SSC_CON_RX_OFL_CHECK; if (opts->rxUndErrDetect) @@ -1001,40 +956,53 @@ ifx_ssc_sethwopts (struct ifx_ssc_port *info) bits |= IFX_SSC_CON_LATCH_THEN_SHIFT; if (opts->clockPolarity) bits |= IFX_SSC_CON_CLOCK_FALL; - switch (opts->modeRxTx) { + + switch (opts->modeRxTx) + { case IFX_SSC_MODE_TX: bits |= IFX_SSC_CON_RX_OFF; break; case IFX_SSC_MODE_RX: bits |= IFX_SSC_CON_TX_OFF; break; - } // switch (opts->modeRxT) + } + local_irq_save (flags); + WRITE_PERIPHERAL_REGISTER (bits, info->mapbase + IFX_SSC_CON); - WRITE_PERIPHERAL_REGISTER ((info->opts. - gpoCs << IFX_SSC_GPOCON_ISCSB0_POS) | - (info->opts. - gpoInv << IFX_SSC_GPOCON_INVOUT0_POS), - info->mapbase + IFX_SSC_GPOCON); - /*TODO: disable cs */ - WRITE_PERIPHERAL_REGISTER (info->opts. - gpoCs << IFX_SSC_WHBGPOSTAT_SETOUT0_POS, - info->mapbase + IFX_SSC_WHBGPOSTAT); + WRITE_PERIPHERAL_REGISTER ((info->opts.gpoCs << IFX_SSC_GPOCON_ISCSB0_POS) | + (info->opts.gpoInv << IFX_SSC_GPOCON_INVOUT0_POS), info->mapbase + IFX_SSC_GPOCON); + + WRITE_PERIPHERAL_REGISTER (info->opts.gpoCs << IFX_SSC_WHBGPOSTAT_SETOUT0_POS, info->mapbase + IFX_SSC_WHBGPOSTAT); //master mode - if (opts->masterSelect) { - WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_MASTER_SELECT, - info->mapbase + IFX_SSC_WHBSTATE); - } - else { - WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_MASTER_SELECT, - info->mapbase + IFX_SSC_WHBSTATE); - } + if (opts->masterSelect) + WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_MASTER_SELECT, info->mapbase + IFX_SSC_WHBSTATE); + else + WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_MASTER_SELECT, info->mapbase + IFX_SSC_WHBSTATE); + // init serial framing WRITE_PERIPHERAL_REGISTER (0, info->mapbase + IFX_SSC_SFCON); /* set up the port pins */ //check for general requirements to switch (external) pad/pin characteristics - ifx_gpio_init (); + /* TODO: P0.9 SPI_CS4, P0.10 SPI_CS5, P 0.11 SPI_CS6, because of ASC0 */ + /* p0.15 SPI_CS1(EEPROM), P0.13 SPI_CS3, */ + /* Set p0.15 to alternative 01, others to 00 (In/OUT) */ + *(DANUBE_GPIO_P0_DIR) = (*DANUBE_GPIO_P0_DIR) | (0xA000); + *(DANUBE_GPIO_P0_ALTSEL0) = (((*DANUBE_GPIO_P0_ALTSEL0) | (0x8000)) & (~(0x2000))); + *(DANUBE_GPIO_P0_ALTSEL1) = (((*DANUBE_GPIO_P0_ALTSEL1) & (~0x8000)) & (~(0x2000))); + *(DANUBE_GPIO_P0_OD) = (*DANUBE_GPIO_P0_OD) | 0xA000; + + /* p1.6 SPI_CS2(SFLASH), p1.0 SPI_DIN, p1.1 SPI_DOUT, p1.2 SPI_CLK */ + *(DANUBE_GPIO_P1_DIR) = ((*DANUBE_GPIO_P1_DIR) | (0x46)) & (~1); + *(DANUBE_GPIO_P1_ALTSEL0) = ((*DANUBE_GPIO_P1_ALTSEL0) | (0x47)); + *(DANUBE_GPIO_P1_ALTSEL1) = (*DANUBE_GPIO_P1_ALTSEL1) & (~0x47); + *(DANUBE_GPIO_P1_OD) = (*DANUBE_GPIO_P1_OD) | 0x0046; + + /*CS3 */ + /*TODO: CS4 CS5 CS6 */ + *DANUBE_GPIO_P0_OUT = ((*DANUBE_GPIO_P0_OUT) | 0x2000); + local_irq_restore (flags); return 0; @@ -1047,35 +1015,39 @@ ifx_ssc_set_baud (struct ifx_ssc_port *info, unsigned int baud) unsigned int br; unsigned long flags; bool enabled; + int retval = 0; - ifx_ssc_clock = ifx_ssc_get_kernel_clk (info); + ifx_ssc_clock = ifx_ssc_get_kernel_clk(info); if (ifx_ssc_clock == 0) - return -EINVAL; + { + retval = -EINVAL; + goto out; + } + local_irq_save (flags); - /* have to disable the SSC to set the baudrate */ - enabled = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) - & IFX_SSC_STATE_IS_ENABLED) != 0; - WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE, - info->mapbase + IFX_SSC_WHBSTATE); - // compute divider + enabled = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_IS_ENABLED); + WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE, info->mapbase + IFX_SSC_WHBSTATE); + br = (((ifx_ssc_clock >> 1) + baud / 2) / baud) - 1; wmb(); - if (br > 0xffff || - ((br == 0) && - ((READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & - IFX_SSC_STATE_IS_MASTER) == 0))) { + + if (br > 0xffff || ((br == 0) && + ((READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_IS_MASTER) == 0))) { local_irq_restore (flags); - printk ("%s: illegal baudrate %u\n", __FUNCTION__, baud); + printk ("%s: invalid baudrate %u\n", __func__, baud); return -EINVAL; } + WRITE_PERIPHERAL_REGISTER (br, info->mapbase + IFX_SSC_BR); + if (enabled) - WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE, - info->mapbase + IFX_SSC_WHBSTATE); + WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE, info->mapbase + IFX_SSC_WHBSTATE); - local_irq_restore (flags); - return 0; + local_irq_restore(flags); + +out: + return retval; } static int @@ -1084,43 +1056,40 @@ ifx_ssc_hwinit (struct ifx_ssc_port *info) unsigned long flags; bool enabled; - /* have to disable the SSC */ - enabled = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) - & IFX_SSC_STATE_IS_ENABLED) != 0; - WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE, - info->mapbase + IFX_SSC_WHBSTATE); + enabled = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_IS_ENABLED); + WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE, info->mapbase + IFX_SSC_WHBSTATE); - if (ifx_ssc_sethwopts (info) < 0) { - printk ("%s: setting the hardware options failed\n", - __FUNCTION__); + if (ifx_ssc_sethwopts (info) < 0) + { + printk ("%s: setting the hardware options failed\n", __func__); return -EINVAL; } - if (ifx_ssc_set_baud (info, info->baud) < 0) { - printk ("%s: setting the baud rate failed\n", __FUNCTION__); + if (ifx_ssc_set_baud (info, info->baud) < 0) + { + printk ("%s: setting the baud rate failed\n", __func__); return -EINVAL; } + local_irq_save (flags); + /* TX FIFO */ - WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_TXFIFO_FL << - IFX_SSC_XFCON_ITL_OFFSET) | - IFX_SSC_XFCON_FIFO_ENABLE, + WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_TXFIFO_FL << IFX_SSC_XFCON_ITL_OFFSET) | IFX_SSC_XFCON_FIFO_ENABLE, info->mapbase + IFX_SSC_TXFCON); /* RX FIFO */ - WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_RXFIFO_FL << - IFX_SSC_XFCON_ITL_OFFSET) | - IFX_SSC_XFCON_FIFO_ENABLE, + WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_RXFIFO_FL << IFX_SSC_XFCON_ITL_OFFSET) | IFX_SSC_XFCON_FIFO_ENABLE, info->mapbase + IFX_SSC_RXFCON); + local_irq_restore (flags); + if (enabled) - WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE, - info->mapbase + IFX_SSC_WHBSTATE); + WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE, info->mapbase + IFX_SSC_WHBSTATE); + return 0; } int -ifx_ssc_ioctl (struct inode *inode, struct file *filp, unsigned int cmd, - unsigned long data) +ifx_ssc_ioctl (struct inode *inode, struct file *filp, unsigned int cmd, unsigned long data) { struct ifx_ssc_port *info; int line, ret_val = 0; @@ -1128,20 +1097,21 @@ ifx_ssc_ioctl (struct inode *inode, struct file *filp, unsigned int cmd, unsigned long tmp; int from_kernel = 0; - if ((inode == (struct inode *) 0) || (inode == (struct inode *) 1)) { + if ((inode == (struct inode *) 0) || (inode == (struct inode *) 1)) + { from_kernel = 1; line = (int) inode; - } - else + } else { line = MINOR (filp->f_dentry->d_inode->i_rdev); + } - /* don't use more minor devices than we can support */ if (line < 0 || line >= PORT_CNT) return -ENXIO; info = &isp[line]; - switch (cmd) { + switch (cmd) + { case IFX_SSC_STATS_READ: /* data must be a pointer to a struct ifx_ssc_statistics */ if (from_kernel) @@ -1382,7 +1352,7 @@ ifx_ssc_init (void) nbytes = PORT_CNT * sizeof (struct ifx_ssc_port); isp = (struct ifx_ssc_port *) kmalloc (nbytes, GFP_KERNEL); if (isp == NULL) { - printk ("%s: no memory for isp\n", __FUNCTION__); + printk ("%s: no memory for isp\n", __func__); return (ret_val); } memset (isp, 0, nbytes); @@ -1471,7 +1441,7 @@ ifx_ssc_init (void) ret_val = request_irq(info->txirq, ifx_ssc_tx_int, SA_INTERRUPT, "ifx_ssc_tx", info); if (ret_val) { - printk ("%s: unable to get irq %d\n", __FUNCTION__, + printk ("%s: unable to get irq %d\n", __func__, info->txirq); local_irq_restore (flags); goto errout; @@ -1479,7 +1449,7 @@ ifx_ssc_init (void) ret_val = request_irq(info->rxirq, ifx_ssc_rx_int, SA_INTERRUPT, "ifx_ssc_rx", info); if (ret_val) { - printk ("%s: unable to get irq %d\n", __FUNCTION__, + printk ("%s: unable to get irq %d\n", __func__, info->rxirq); local_irq_restore (flags); goto irqerr; @@ -1487,7 +1457,7 @@ ifx_ssc_init (void) ret_val = request_irq(info->errirq, ifx_ssc_err_int, SA_INTERRUPT,"ifx_ssc_err", info); if (ret_val) { - printk ("%s: unable to get irq %d\n", __FUNCTION__, + printk ("%s: unable to get irq %d\n", __func__, info->errirq); local_irq_restore (flags); goto irqerr; @@ -1506,7 +1476,7 @@ ifx_ssc_init (void) info = &isp[i]; if (ifx_ssc_hwinit (info) < 0) { printk ("%s: hardware init failed for port %d\n", - __FUNCTION__, i); + __func__, i); goto irqerr; } } @@ -1550,71 +1520,34 @@ ifx_ssc_cleanup_module (void) remove_proc_entry ("driver/ssc2", NULL); } -module_exit (ifx_ssc_cleanup_module); - -/* Module entry-points */ -module_init (ifx_ssc_init); - -#ifndef MODULE -static int __init -ifx_ssc_set_maj (char *str) -{ - maj = simple_strtol (str, NULL, 0); - return 1; -} +module_init(ifx_ssc_init); +module_exit(ifx_ssc_cleanup_module); -__setup ("ssc_maj=", ifx_ssc_set_maj); -#endif /* !MODULE */ -#define DANUBE_SSC_EMSG(fmt,arg...) printk("%s: "fmt,__FUNCTION__, ##arg) -/* Brief: chip select enable - */ inline int ifx_ssc_cs_low (u32 pin) { int ret = 0; - if ((ret = - ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_GPO_OUT_CLR, - (unsigned long) &pin))) { - DANUBE_SSC_EMSG ("clear CS %d fails\n", pin); - } + if ((ret = ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_GPO_OUT_CLR, (unsigned long) &pin))) + printk ("clear CS %d fails\n", pin); wmb (); + return ret; } +EXPORT_SYMBOL(ifx_ssc_cs_low); -EXPORT_SYMBOL (ifx_ssc_cs_low); -/* Brief: chip select disable - */ inline int ifx_ssc_cs_high (u32 pin) { int ret = 0; - if ((ret = - ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_GPO_OUT_SET, - (unsigned long) &pin))) { - DANUBE_SSC_EMSG ("set CS %d fails\n", pin); - } + if ((ret = ifx_ssc_ioctl((struct inode *) 0, NULL, IFX_SSC_GPO_OUT_SET, (unsigned long) &pin))) + printk ("set CS %d fails\n", pin); wmb (); + return ret; } +EXPORT_SYMBOL(ifx_ssc_cs_high); -EXPORT_SYMBOL (ifx_ssc_cs_high); -/* Brief: one SSC session - * Parameter: - * tx_buf - * tx_len - * rx_buf - * rx_len - * session_mode: IFX_SSC_MODE_RXTX or IFX_SSC_MODE_TX - * Return: >=0 number of bytes received (if rx_buf != 0) or transmitted - * <0 error code - * Description: - * 0. copy data to internal buffer - * 1. Write command - * 2a. If SSC_SESSION_MODE_TXONLY, read tx_len data - * 2b. If not Read back (tx_len + rx_len) data - * 3. copy internal buffer to rx buf if necessary - */ static int ssc_session (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len) { @@ -1622,15 +1555,11 @@ ssc_session (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len) char *ssc_tx_buf = NULL; char *ssc_rx_buf = NULL; - -// volatile char ssc_tx_buf[128]={0}; -// volatile char ssc_rx_buf[128]={0}; - int eff_size = 0; u8 mode = 0; if (tx_buf == NULL && tx_len == 0 && rx_buf == NULL && rx_len == 0) { - DANUBE_SSC_EMSG ("invalid parameters\n"); + printk ("invalid parameters\n"); ret = -EINVAL; goto ssc_session_exit; } @@ -1639,7 +1568,7 @@ ssc_session (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len) mode = IFX_SSC_MODE_RX; } else { - DANUBE_SSC_EMSG ("invalid parameters\n"); + printk ("invalid parameters\n"); ret = -EINVAL; goto ssc_session_exit; } @@ -1649,7 +1578,7 @@ ssc_session (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len) mode = IFX_SSC_MODE_TX; } else { - DANUBE_SSC_EMSG ("invalid parameters\n"); + printk ("invalid parameters\n"); ret = -EINVAL; goto ssc_session_exit; } @@ -1692,7 +1621,7 @@ ssc_session (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len) GFP_KERNEL); } if (ssc_tx_buf == NULL || ssc_rx_buf == NULL) { - DANUBE_SSC_EMSG ("no memory for size of %d\n", eff_size); + printk ("no memory for size of %d\n", eff_size); ret = -ENOMEM; goto ssc_session_exit; } @@ -1710,12 +1639,12 @@ ssc_session (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len) } if (ret != eff_size) { - DANUBE_SSC_EMSG ("ifx_ssc_write return %d\n", ret); + printk ("ifx_ssc_write return %d\n", ret); goto ssc_session_exit; } ret = ifx_ssc_kread (0, ssc_rx_buf, eff_size); if (ret != eff_size) { - DANUBE_SSC_EMSG ("ifx_ssc_read return %d\n", ret); + printk ("ifx_ssc_read return %d\n", ret); goto ssc_session_exit; } @@ -1740,53 +1669,26 @@ ssc_session (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len) return ret; } -/* Brief: TX-RX session - * Parameter: - * tx_buf - * tx_len - * rx_buf - * rx_len - * Return: >=0 number of bytes received - * <0 error code - * Description: - * 1. TX session - * 2. RX session - */ int ifx_ssc_txrx (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len) { - return ssc_session (tx_buf, tx_len, rx_buf, rx_len); + return ssc_session(tx_buf, tx_len, rx_buf, rx_len); } +EXPORT_SYMBOL(ifx_ssc_txrx); -EXPORT_SYMBOL (ifx_ssc_txrx); -/* Brief: TX only session - * Parameter: - * tx_buf - * tx_len - * Return: >=0 number of bytes transmitted - * <0 error code - */ int ifx_ssc_tx (char *tx_buf, u32 tx_len) { - return ssc_session (tx_buf, tx_len, NULL, 0); + return ssc_session(tx_buf, tx_len, NULL, 0); } +EXPORT_SYMBOL(ifx_ssc_tx); -EXPORT_SYMBOL (ifx_ssc_tx); -/* Brief: RX only session - * Parameter: - * rx_buf - * rx_len - * Return: >=0 number of bytes received - * <0 error code - */ int ifx_ssc_rx (char *rx_buf, u32 rx_len) { - return ssc_session (NULL, 0, rx_buf, rx_len); + return ssc_session(NULL, 0, rx_buf, rx_len); } - -EXPORT_SYMBOL (ifx_ssc_rx); +EXPORT_SYMBOL(ifx_ssc_rx); MODULE_LICENSE("GPL"); MODULE_AUTHOR("John Crispin ");