diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/tty/serial/lantiq.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/tty/serial/lantiq.c | 758 |
1 files changed, 0 insertions, 758 deletions
diff --git a/ANDROID_3.4.5/drivers/tty/serial/lantiq.c b/ANDROID_3.4.5/drivers/tty/serial/lantiq.c deleted file mode 100644 index 96c1cacc..00000000 --- a/ANDROID_3.4.5/drivers/tty/serial/lantiq.c +++ /dev/null @@ -1,758 +0,0 @@ -/* - * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * Copyright (C) 2004 Infineon IFAP DC COM CPE - * Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org> - * Copyright (C) 2007 John Crispin <blogic@openwrt.org> - * Copyright (C) 2010 Thomas Langer, <thomas.langer@lantiq.com> - */ - -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/ioport.h> -#include <linux/init.h> -#include <linux/console.h> -#include <linux/sysrq.h> -#include <linux/device.h> -#include <linux/tty.h> -#include <linux/tty_flip.h> -#include <linux/serial_core.h> -#include <linux/serial.h> -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/clk.h> - -#include <lantiq_soc.h> - -#define PORT_LTQ_ASC 111 -#define MAXPORTS 2 -#define UART_DUMMY_UER_RX 1 -#define DRVNAME "ltq_asc" -#ifdef __BIG_ENDIAN -#define LTQ_ASC_TBUF (0x0020 + 3) -#define LTQ_ASC_RBUF (0x0024 + 3) -#else -#define LTQ_ASC_TBUF 0x0020 -#define LTQ_ASC_RBUF 0x0024 -#endif -#define LTQ_ASC_FSTAT 0x0048 -#define LTQ_ASC_WHBSTATE 0x0018 -#define LTQ_ASC_STATE 0x0014 -#define LTQ_ASC_IRNCR 0x00F8 -#define LTQ_ASC_CLC 0x0000 -#define LTQ_ASC_ID 0x0008 -#define LTQ_ASC_PISEL 0x0004 -#define LTQ_ASC_TXFCON 0x0044 -#define LTQ_ASC_RXFCON 0x0040 -#define LTQ_ASC_CON 0x0010 -#define LTQ_ASC_BG 0x0050 -#define LTQ_ASC_IRNREN 0x00F4 - -#define ASC_IRNREN_TX 0x1 -#define ASC_IRNREN_RX 0x2 -#define ASC_IRNREN_ERR 0x4 -#define ASC_IRNREN_TX_BUF 0x8 -#define ASC_IRNCR_TIR 0x1 -#define ASC_IRNCR_RIR 0x2 -#define ASC_IRNCR_EIR 0x4 - -#define ASCOPT_CSIZE 0x3 -#define TXFIFO_FL 1 -#define RXFIFO_FL 1 -#define ASCCLC_DISS 0x2 -#define ASCCLC_RMCMASK 0x0000FF00 -#define ASCCLC_RMCOFFSET 8 -#define ASCCON_M_8ASYNC 0x0 -#define ASCCON_M_7ASYNC 0x2 -#define ASCCON_ODD 0x00000020 -#define ASCCON_STP 0x00000080 -#define ASCCON_BRS 0x00000100 -#define ASCCON_FDE 0x00000200 -#define ASCCON_R 0x00008000 -#define ASCCON_FEN 0x00020000 -#define ASCCON_ROEN 0x00080000 -#define ASCCON_TOEN 0x00100000 -#define ASCSTATE_PE 0x00010000 -#define ASCSTATE_FE 0x00020000 -#define ASCSTATE_ROE 0x00080000 -#define ASCSTATE_ANY (ASCSTATE_ROE|ASCSTATE_PE|ASCSTATE_FE) -#define ASCWHBSTATE_CLRREN 0x00000001 -#define ASCWHBSTATE_SETREN 0x00000002 -#define ASCWHBSTATE_CLRPE 0x00000004 -#define ASCWHBSTATE_CLRFE 0x00000008 -#define ASCWHBSTATE_CLRROE 0x00000020 -#define ASCTXFCON_TXFEN 0x0001 -#define ASCTXFCON_TXFFLU 0x0002 -#define ASCTXFCON_TXFITLMASK 0x3F00 -#define ASCTXFCON_TXFITLOFF 8 -#define ASCRXFCON_RXFEN 0x0001 -#define ASCRXFCON_RXFFLU 0x0002 -#define ASCRXFCON_RXFITLMASK 0x3F00 -#define ASCRXFCON_RXFITLOFF 8 -#define ASCFSTAT_RXFFLMASK 0x003F -#define ASCFSTAT_TXFFLMASK 0x3F00 -#define ASCFSTAT_TXFREEMASK 0x3F000000 -#define ASCFSTAT_TXFREEOFF 24 - -static void lqasc_tx_chars(struct uart_port *port); -static struct ltq_uart_port *lqasc_port[MAXPORTS]; -static struct uart_driver lqasc_reg; -static DEFINE_SPINLOCK(ltq_asc_lock); - -struct ltq_uart_port { - struct uart_port port; - struct clk *clk; - unsigned int tx_irq; - unsigned int rx_irq; - unsigned int err_irq; -}; - -static inline struct -ltq_uart_port *to_ltq_uart_port(struct uart_port *port) -{ - return container_of(port, struct ltq_uart_port, port); -} - -static void -lqasc_stop_tx(struct uart_port *port) -{ - return; -} - -static void -lqasc_start_tx(struct uart_port *port) -{ - unsigned long flags; - spin_lock_irqsave(<q_asc_lock, flags); - lqasc_tx_chars(port); - spin_unlock_irqrestore(<q_asc_lock, flags); - return; -} - -static void -lqasc_stop_rx(struct uart_port *port) -{ - ltq_w32(ASCWHBSTATE_CLRREN, port->membase + LTQ_ASC_WHBSTATE); -} - -static void -lqasc_enable_ms(struct uart_port *port) -{ -} - -static int -lqasc_rx_chars(struct uart_port *port) -{ - struct tty_struct *tty = tty_port_tty_get(&port->state->port); - unsigned int ch = 0, rsr = 0, fifocnt; - - if (!tty) { - dev_dbg(port->dev, "%s:tty is busy now", __func__); - return -EBUSY; - } - fifocnt = - ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_RXFFLMASK; - while (fifocnt--) { - u8 flag = TTY_NORMAL; - ch = ltq_r8(port->membase + LTQ_ASC_RBUF); - rsr = (ltq_r32(port->membase + LTQ_ASC_STATE) - & ASCSTATE_ANY) | UART_DUMMY_UER_RX; - tty_flip_buffer_push(tty); - port->icount.rx++; - - /* - * Note that the error handling code is - * out of the main execution path - */ - if (rsr & ASCSTATE_ANY) { - if (rsr & ASCSTATE_PE) { - port->icount.parity++; - ltq_w32_mask(0, ASCWHBSTATE_CLRPE, - port->membase + LTQ_ASC_WHBSTATE); - } else if (rsr & ASCSTATE_FE) { - port->icount.frame++; - ltq_w32_mask(0, ASCWHBSTATE_CLRFE, - port->membase + LTQ_ASC_WHBSTATE); - } - if (rsr & ASCSTATE_ROE) { - port->icount.overrun++; - ltq_w32_mask(0, ASCWHBSTATE_CLRROE, - port->membase + LTQ_ASC_WHBSTATE); - } - - rsr &= port->read_status_mask; - - if (rsr & ASCSTATE_PE) - flag = TTY_PARITY; - else if (rsr & ASCSTATE_FE) - flag = TTY_FRAME; - } - - if ((rsr & port->ignore_status_mask) == 0) - tty_insert_flip_char(tty, ch, flag); - - if (rsr & ASCSTATE_ROE) - /* - * Overrun is special, since it's reported - * immediately, and doesn't affect the current - * character - */ - tty_insert_flip_char(tty, 0, TTY_OVERRUN); - } - if (ch != 0) - tty_flip_buffer_push(tty); - tty_kref_put(tty); - return 0; -} - -static void -lqasc_tx_chars(struct uart_port *port) -{ - struct circ_buf *xmit = &port->state->xmit; - if (uart_tx_stopped(port)) { - lqasc_stop_tx(port); - return; - } - - while (((ltq_r32(port->membase + LTQ_ASC_FSTAT) & - ASCFSTAT_TXFREEMASK) >> ASCFSTAT_TXFREEOFF) != 0) { - if (port->x_char) { - ltq_w8(port->x_char, port->membase + LTQ_ASC_TBUF); - port->icount.tx++; - port->x_char = 0; - continue; - } - - if (uart_circ_empty(xmit)) - break; - - ltq_w8(port->state->xmit.buf[port->state->xmit.tail], - port->membase + LTQ_ASC_TBUF); - xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); - port->icount.tx++; - } - - if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) - uart_write_wakeup(port); -} - -static irqreturn_t -lqasc_tx_int(int irq, void *_port) -{ - unsigned long flags; - struct uart_port *port = (struct uart_port *)_port; - spin_lock_irqsave(<q_asc_lock, flags); - ltq_w32(ASC_IRNCR_TIR, port->membase + LTQ_ASC_IRNCR); - spin_unlock_irqrestore(<q_asc_lock, flags); - lqasc_start_tx(port); - return IRQ_HANDLED; -} - -static irqreturn_t -lqasc_err_int(int irq, void *_port) -{ - unsigned long flags; - struct uart_port *port = (struct uart_port *)_port; - spin_lock_irqsave(<q_asc_lock, flags); - /* clear any pending interrupts */ - ltq_w32_mask(0, ASCWHBSTATE_CLRPE | ASCWHBSTATE_CLRFE | - ASCWHBSTATE_CLRROE, port->membase + LTQ_ASC_WHBSTATE); - spin_unlock_irqrestore(<q_asc_lock, flags); - return IRQ_HANDLED; -} - -static irqreturn_t -lqasc_rx_int(int irq, void *_port) -{ - unsigned long flags; - struct uart_port *port = (struct uart_port *)_port; - spin_lock_irqsave(<q_asc_lock, flags); - ltq_w32(ASC_IRNCR_RIR, port->membase + LTQ_ASC_IRNCR); - lqasc_rx_chars(port); - spin_unlock_irqrestore(<q_asc_lock, flags); - return IRQ_HANDLED; -} - -static unsigned int -lqasc_tx_empty(struct uart_port *port) -{ - int status; - status = ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_TXFFLMASK; - return status ? 0 : TIOCSER_TEMT; -} - -static unsigned int -lqasc_get_mctrl(struct uart_port *port) -{ - return TIOCM_CTS | TIOCM_CAR | TIOCM_DSR; -} - -static void -lqasc_set_mctrl(struct uart_port *port, u_int mctrl) -{ -} - -static void -lqasc_break_ctl(struct uart_port *port, int break_state) -{ -} - -static int -lqasc_startup(struct uart_port *port) -{ - struct ltq_uart_port *ltq_port = to_ltq_uart_port(port); - int retval; - - port->uartclk = clk_get_rate(ltq_port->clk); - - ltq_w32_mask(ASCCLC_DISS | ASCCLC_RMCMASK, (1 << ASCCLC_RMCOFFSET), - port->membase + LTQ_ASC_CLC); - - ltq_w32(0, port->membase + LTQ_ASC_PISEL); - ltq_w32( - ((TXFIFO_FL << ASCTXFCON_TXFITLOFF) & ASCTXFCON_TXFITLMASK) | - ASCTXFCON_TXFEN | ASCTXFCON_TXFFLU, - port->membase + LTQ_ASC_TXFCON); - ltq_w32( - ((RXFIFO_FL << ASCRXFCON_RXFITLOFF) & ASCRXFCON_RXFITLMASK) - | ASCRXFCON_RXFEN | ASCRXFCON_RXFFLU, - port->membase + LTQ_ASC_RXFCON); - /* make sure other settings are written to hardware before - * setting enable bits - */ - wmb(); - ltq_w32_mask(0, ASCCON_M_8ASYNC | ASCCON_FEN | ASCCON_TOEN | - ASCCON_ROEN, port->membase + LTQ_ASC_CON); - - retval = request_irq(ltq_port->tx_irq, lqasc_tx_int, - 0, "asc_tx", port); - if (retval) { - pr_err("failed to request lqasc_tx_int\n"); - return retval; - } - - retval = request_irq(ltq_port->rx_irq, lqasc_rx_int, - 0, "asc_rx", port); - if (retval) { - pr_err("failed to request lqasc_rx_int\n"); - goto err1; - } - - retval = request_irq(ltq_port->err_irq, lqasc_err_int, - 0, "asc_err", port); - if (retval) { - pr_err("failed to request lqasc_err_int\n"); - goto err2; - } - - ltq_w32(ASC_IRNREN_RX | ASC_IRNREN_ERR | ASC_IRNREN_TX, - port->membase + LTQ_ASC_IRNREN); - return 0; - -err2: - free_irq(ltq_port->rx_irq, port); -err1: - free_irq(ltq_port->tx_irq, port); - return retval; -} - -static void -lqasc_shutdown(struct uart_port *port) -{ - struct ltq_uart_port *ltq_port = to_ltq_uart_port(port); - free_irq(ltq_port->tx_irq, port); - free_irq(ltq_port->rx_irq, port); - free_irq(ltq_port->err_irq, port); - - ltq_w32(0, port->membase + LTQ_ASC_CON); - ltq_w32_mask(ASCRXFCON_RXFEN, ASCRXFCON_RXFFLU, - port->membase + LTQ_ASC_RXFCON); - ltq_w32_mask(ASCTXFCON_TXFEN, ASCTXFCON_TXFFLU, - port->membase + LTQ_ASC_TXFCON); -} - -static void -lqasc_set_termios(struct uart_port *port, - struct ktermios *new, struct ktermios *old) -{ - unsigned int cflag; - unsigned int iflag; - unsigned int divisor; - unsigned int baud; - unsigned int con = 0; - unsigned long flags; - - cflag = new->c_cflag; - iflag = new->c_iflag; - - switch (cflag & CSIZE) { - case CS7: - con = ASCCON_M_7ASYNC; - break; - - case CS5: - case CS6: - default: - new->c_cflag &= ~ CSIZE; - new->c_cflag |= CS8; - con = ASCCON_M_8ASYNC; - break; - } - - cflag &= ~CMSPAR; /* Mark/Space parity is not supported */ - - if (cflag & CSTOPB) - con |= ASCCON_STP; - - if (cflag & PARENB) { - if (!(cflag & PARODD)) - con &= ~ASCCON_ODD; - else - con |= ASCCON_ODD; - } - - port->read_status_mask = ASCSTATE_ROE; - if (iflag & INPCK) - port->read_status_mask |= ASCSTATE_FE | ASCSTATE_PE; - - port->ignore_status_mask = 0; - if (iflag & IGNPAR) - port->ignore_status_mask |= ASCSTATE_FE | ASCSTATE_PE; - - if (iflag & IGNBRK) { - /* - * If we're ignoring parity and break indicators, - * ignore overruns too (for real raw support). - */ - if (iflag & IGNPAR) - port->ignore_status_mask |= ASCSTATE_ROE; - } - - if ((cflag & CREAD) == 0) - port->ignore_status_mask |= UART_DUMMY_UER_RX; - - /* set error signals - framing, parity and overrun, enable receiver */ - con |= ASCCON_FEN | ASCCON_TOEN | ASCCON_ROEN; - - spin_lock_irqsave(<q_asc_lock, flags); - - /* set up CON */ - ltq_w32_mask(0, con, port->membase + LTQ_ASC_CON); - - /* Set baud rate - take a divider of 2 into account */ - baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16); - divisor = uart_get_divisor(port, baud); - divisor = divisor / 2 - 1; - - /* disable the baudrate generator */ - ltq_w32_mask(ASCCON_R, 0, port->membase + LTQ_ASC_CON); - - /* make sure the fractional divider is off */ - ltq_w32_mask(ASCCON_FDE, 0, port->membase + LTQ_ASC_CON); - - /* set up to use divisor of 2 */ - ltq_w32_mask(ASCCON_BRS, 0, port->membase + LTQ_ASC_CON); - - /* now we can write the new baudrate into the register */ - ltq_w32(divisor, port->membase + LTQ_ASC_BG); - - /* turn the baudrate generator back on */ - ltq_w32_mask(0, ASCCON_R, port->membase + LTQ_ASC_CON); - - /* enable rx */ - ltq_w32(ASCWHBSTATE_SETREN, port->membase + LTQ_ASC_WHBSTATE); - - spin_unlock_irqrestore(<q_asc_lock, flags); - - /* Don't rewrite B0 */ - if (tty_termios_baud_rate(new)) - tty_termios_encode_baud_rate(new, baud, baud); - - uart_update_timeout(port, cflag, baud); -} - -static const char* -lqasc_type(struct uart_port *port) -{ - if (port->type == PORT_LTQ_ASC) - return DRVNAME; - else - return NULL; -} - -static void -lqasc_release_port(struct uart_port *port) -{ - if (port->flags & UPF_IOREMAP) { - iounmap(port->membase); - port->membase = NULL; - } -} - -static int -lqasc_request_port(struct uart_port *port) -{ - struct platform_device *pdev = to_platform_device(port->dev); - struct resource *res; - int size; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "cannot obtain I/O memory region"); - return -ENODEV; - } - size = resource_size(res); - - res = devm_request_mem_region(&pdev->dev, res->start, - size, dev_name(&pdev->dev)); - if (!res) { - dev_err(&pdev->dev, "cannot request I/O memory region"); - return -EBUSY; - } - - if (port->flags & UPF_IOREMAP) { - port->membase = devm_ioremap_nocache(&pdev->dev, - port->mapbase, size); - if (port->membase == NULL) - return -ENOMEM; - } - return 0; -} - -static void -lqasc_config_port(struct uart_port *port, int flags) -{ - if (flags & UART_CONFIG_TYPE) { - port->type = PORT_LTQ_ASC; - lqasc_request_port(port); - } -} - -static int -lqasc_verify_port(struct uart_port *port, - struct serial_struct *ser) -{ - int ret = 0; - if (ser->type != PORT_UNKNOWN && ser->type != PORT_LTQ_ASC) - ret = -EINVAL; - if (ser->irq < 0 || ser->irq >= NR_IRQS) - ret = -EINVAL; - if (ser->baud_base < 9600) - ret = -EINVAL; - return ret; -} - -static struct uart_ops lqasc_pops = { - .tx_empty = lqasc_tx_empty, - .set_mctrl = lqasc_set_mctrl, - .get_mctrl = lqasc_get_mctrl, - .stop_tx = lqasc_stop_tx, - .start_tx = lqasc_start_tx, - .stop_rx = lqasc_stop_rx, - .enable_ms = lqasc_enable_ms, - .break_ctl = lqasc_break_ctl, - .startup = lqasc_startup, - .shutdown = lqasc_shutdown, - .set_termios = lqasc_set_termios, - .type = lqasc_type, - .release_port = lqasc_release_port, - .request_port = lqasc_request_port, - .config_port = lqasc_config_port, - .verify_port = lqasc_verify_port, -}; - -static void -lqasc_console_putchar(struct uart_port *port, int ch) -{ - int fifofree; - - if (!port->membase) - return; - - do { - fifofree = (ltq_r32(port->membase + LTQ_ASC_FSTAT) - & ASCFSTAT_TXFREEMASK) >> ASCFSTAT_TXFREEOFF; - } while (fifofree == 0); - ltq_w8(ch, port->membase + LTQ_ASC_TBUF); -} - - -static void -lqasc_console_write(struct console *co, const char *s, u_int count) -{ - struct ltq_uart_port *ltq_port; - struct uart_port *port; - unsigned long flags; - - if (co->index >= MAXPORTS) - return; - - ltq_port = lqasc_port[co->index]; - if (!ltq_port) - return; - - port = <q_port->port; - - spin_lock_irqsave(<q_asc_lock, flags); - uart_console_write(port, s, count, lqasc_console_putchar); - spin_unlock_irqrestore(<q_asc_lock, flags); -} - -static int __init -lqasc_console_setup(struct console *co, char *options) -{ - struct ltq_uart_port *ltq_port; - struct uart_port *port; - int baud = 115200; - int bits = 8; - int parity = 'n'; - int flow = 'n'; - - if (co->index >= MAXPORTS) - return -ENODEV; - - ltq_port = lqasc_port[co->index]; - if (!ltq_port) - return -ENODEV; - - port = <q_port->port; - - port->uartclk = clk_get_rate(ltq_port->clk); - - if (options) - uart_parse_options(options, &baud, &parity, &bits, &flow); - return uart_set_options(port, co, baud, parity, bits, flow); -} - -static struct console lqasc_console = { - .name = "ttyLTQ", - .write = lqasc_console_write, - .device = uart_console_device, - .setup = lqasc_console_setup, - .flags = CON_PRINTBUFFER, - .index = -1, - .data = &lqasc_reg, -}; - -static int __init -lqasc_console_init(void) -{ - register_console(&lqasc_console); - return 0; -} -console_initcall(lqasc_console_init); - -static struct uart_driver lqasc_reg = { - .owner = THIS_MODULE, - .driver_name = DRVNAME, - .dev_name = "ttyLTQ", - .major = 0, - .minor = 0, - .nr = MAXPORTS, - .cons = &lqasc_console, -}; - -static int __init -lqasc_probe(struct platform_device *pdev) -{ - struct ltq_uart_port *ltq_port; - struct uart_port *port; - struct resource *mmres, *irqres; - int tx_irq, rx_irq, err_irq; - struct clk *clk; - int ret; - - mmres = platform_get_resource(pdev, IORESOURCE_MEM, 0); - irqres = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!mmres || !irqres) - return -ENODEV; - - if (pdev->id >= MAXPORTS) - return -EBUSY; - - if (lqasc_port[pdev->id] != NULL) - return -EBUSY; - - clk = clk_get(&pdev->dev, "fpi"); - if (IS_ERR(clk)) { - pr_err("failed to get fpi clk\n"); - return -ENOENT; - } - - tx_irq = platform_get_irq_byname(pdev, "tx"); - rx_irq = platform_get_irq_byname(pdev, "rx"); - err_irq = platform_get_irq_byname(pdev, "err"); - if ((tx_irq < 0) | (rx_irq < 0) | (err_irq < 0)) - return -ENODEV; - - ltq_port = kzalloc(sizeof(struct ltq_uart_port), GFP_KERNEL); - if (!ltq_port) - return -ENOMEM; - - port = <q_port->port; - - port->iotype = SERIAL_IO_MEM; - port->flags = ASYNC_BOOT_AUTOCONF | UPF_IOREMAP; - port->ops = &lqasc_pops; - port->fifosize = 16; - port->type = PORT_LTQ_ASC, - port->line = pdev->id; - port->dev = &pdev->dev; - - port->irq = tx_irq; /* unused, just to be backward-compatibe */ - port->mapbase = mmres->start; - - ltq_port->clk = clk; - - ltq_port->tx_irq = tx_irq; - ltq_port->rx_irq = rx_irq; - ltq_port->err_irq = err_irq; - - lqasc_port[pdev->id] = ltq_port; - platform_set_drvdata(pdev, ltq_port); - - ret = uart_add_one_port(&lqasc_reg, port); - - return ret; -} - -static struct platform_driver lqasc_driver = { - .driver = { - .name = DRVNAME, - .owner = THIS_MODULE, - }, -}; - -int __init -init_lqasc(void) -{ - int ret; - - ret = uart_register_driver(&lqasc_reg); - if (ret != 0) - return ret; - - ret = platform_driver_probe(&lqasc_driver, lqasc_probe); - if (ret != 0) - uart_unregister_driver(&lqasc_reg); - - return ret; -} - -module_init(init_lqasc); - -MODULE_DESCRIPTION("Lantiq serial port driver"); -MODULE_LICENSE("GPL"); |