--- /dev/null
+/*
+ * Driver for AMAZONASC serial ports
+ *
+ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
+ * Based on drivers/serial/serial_s3c2400.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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>
+ */
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/circ_buf.h>
+#include <linux/serial.h>
+#include <linux/serial_core.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <asm/amazon/amazon.h>
+#include <asm/amazon/irq.h>
+#include <asm/amazon/serial.h>
+
+#define PORT_AMAZONASC 111
+
+#include <linux/serial_core.h>
+
+#define UART_NR 1
+
+#define UART_DUMMY_UER_RX 1
+
+#define SERIAL_AMAZONASC_MAJOR TTY_MAJOR
+#define CALLOUT_AMAZONASC_MAJOR TTYAUX_MAJOR
+#define SERIAL_AMAZONASC_MINOR 64
+#define SERIAL_AMAZONASC_NR UART_NR
+
+static void amazonasc_tx_chars(struct uart_port *port);
+static struct uart_port amazonasc_ports[UART_NR];
+static struct uart_driver amazonasc_reg;
+static unsigned int uartclk = 0;
+
+static void amazonasc_stop_tx(struct uart_port *port)
+{
+ /* fifo underrun shuts up after firing once */
+ return;
+}
+
+static void amazonasc_start_tx(struct uart_port *port)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ amazonasc_tx_chars(port);
+ local_irq_restore(flags);
+
+ return;
+}
+
+static void amazonasc_stop_rx(struct uart_port *port)
+{
+ /* clear the RX enable bit */
+ amazon_writel(ASCWHBCON_CLRREN, AMAZON_ASC_WHBCON);
+}
+
+static void amazonasc_enable_ms(struct uart_port *port)
+{
+ /* no modem signals */
+ return;
+}
+
+#include <linux/version.h>
+
+static void
+amazonasc_rx_chars(struct uart_port *port)
+{
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 31))
+ struct tty_struct *tty = port->state->port.tty;
+#else
+ struct tty_struct *tty = port->info->port.tty;
+#endif
+ unsigned int ch = 0, rsr = 0, fifocnt;
+
+ fifocnt = amazon_readl(AMAZON_ASC_FSTAT) & ASCFSTAT_RXFFLMASK;
+ while (fifocnt--)
+ {
+ u8 flag = TTY_NORMAL;
+ ch = amazon_readl(AMAZON_ASC_RBUF);
+ rsr = (amazon_readl(AMAZON_ASC_CON) & ASCCON_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 & ASCCON_ANY) {
+ if (rsr & ASCCON_PE) {
+ port->icount.parity++;
+ amazon_writel_masked(AMAZON_ASC_WHBCON, ASCWHBCON_CLRPE, ASCWHBCON_CLRPE);
+ } else if (rsr & ASCCON_FE) {
+ port->icount.frame++;
+ amazon_writel_masked(AMAZON_ASC_WHBCON, ASCWHBCON_CLRFE, ASCWHBCON_CLRFE);
+ }
+ if (rsr & ASCCON_OE) {
+ port->icount.overrun++;
+ amazon_writel_masked(AMAZON_ASC_WHBCON, ASCWHBCON_CLROE, ASCWHBCON_CLROE);
+ }
+
+ rsr &= port->read_status_mask;
+
+ if (rsr & ASCCON_PE)
+ flag = TTY_PARITY;
+ else if (rsr & ASCCON_FE)
+ flag = TTY_FRAME;
+ }
+
+ if ((rsr & port->ignore_status_mask) == 0)
+ tty_insert_flip_char(tty, ch, flag);
+
+ if (rsr & ASCCON_OE)
+ /*
+ * 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);
+
+ return;
+}
+
+
+static void amazonasc_tx_chars(struct uart_port *port)
+{
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 31))
+ struct circ_buf *xmit = &port->state->xmit;
+#else
+ struct circ_buf *xmit = &port->info->xmit;
+#endif
+
+ if (uart_tx_stopped(port)) {
+ amazonasc_stop_tx(port);
+ return;
+ }
+
+ while (((amazon_readl(AMAZON_ASC_FSTAT) & ASCFSTAT_TXFFLMASK)
+ >> ASCFSTAT_TXFFLOFF) != AMAZONASC_TXFIFO_FULL)
+ {
+ if (port->x_char) {
+ amazon_writel(port->x_char, AMAZON_ASC_TBUF);
+ port->icount.tx++;
+ port->x_char = 0;
+ continue;
+ }
+
+ if (uart_circ_empty(xmit))
+ break;
+
+ amazon_writel(xmit->buf[xmit->tail], AMAZON_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 amazonasc_tx_int(int irq, void *port)
+{
+ amazon_writel(ASC_IRNCR_TIR, AMAZON_ASC_IRNCR1);
+ amazonasc_start_tx(port);
+
+ /* clear any pending interrupts */
+ amazon_writel_masked(AMAZON_ASC_WHBCON,
+ (ASCWHBCON_CLRPE | ASCWHBCON_CLRFE | ASCWHBCON_CLROE),
+ (ASCWHBCON_CLRPE | ASCWHBCON_CLRFE | ASCWHBCON_CLROE));
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t amazonasc_er_int(int irq, void *port)
+{
+ /* clear any pending interrupts */
+ amazon_writel_masked(AMAZON_ASC_WHBCON,
+ (ASCWHBCON_CLRPE | ASCWHBCON_CLRFE | ASCWHBCON_CLROE),
+ (ASCWHBCON_CLRPE | ASCWHBCON_CLRFE | ASCWHBCON_CLROE));
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t amazonasc_rx_int(int irq, void *port)
+{
+ amazon_writel(ASC_IRNCR_RIR, AMAZON_ASC_IRNCR1);
+ amazonasc_rx_chars((struct uart_port *) port);
+ return IRQ_HANDLED;
+}
+
+static u_int amazonasc_tx_empty(struct uart_port *port)
+{
+ int status;
+
+ /*
+ * FSTAT tells exactly how many bytes are in the FIFO.
+ * The question is whether we really need to wait for all
+ * 16 bytes to be transmitted before reporting that the
+ * transmitter is empty.
+ */
+ status = amazon_readl(AMAZON_ASC_FSTAT) & ASCFSTAT_TXFFLMASK;
+ return status ? 0 : TIOCSER_TEMT;
+}
+
+static u_int amazonasc_get_mctrl(struct uart_port *port)
+{
+ /* no modem control signals - the readme says to pretend all are set */
+ return TIOCM_CTS|TIOCM_CAR|TIOCM_DSR;
+}
+
+static void amazonasc_set_mctrl(struct uart_port *port, u_int mctrl)
+{
+ /* no modem control - just return */
+ return;
+}
+
+static void amazonasc_break_ctl(struct uart_port *port, int break_state)
+{
+ /* no way to send a break */
+ return;
+}
+
+static int amazonasc_startup(struct uart_port *port)
+{
+ unsigned int con = 0;
+ unsigned long flags;
+ int retval;
+
+ /* this assumes: CON.BRS = CON.FDE = 0 */
+ if (uartclk == 0)
+ uartclk = amazon_get_fpi_hz();
+
+ amazonasc_ports[0].uartclk = uartclk;
+
+ local_irq_save(flags);
+
+ /* this setup was probably already done in u-boot */
+ /* ASC and GPIO Port 1 bits 3 and 4 share the same pins
+ * P1.3 (RX) in, Alternate 10
+ * P1.4 (TX) in, Alternate 10
+ */
+ amazon_writel_masked(AMAZON_GPIO_P1_DIR, 0x18, 0x10); //P1.4 output, P1.3 input
+ amazon_writel_masked(AMAZON_GPIO_P1_ALTSEL0, 0x18, 0x18); //ALTSETL0 11
+ amazon_writel_masked(AMAZON_GPIO_P1_ALTSEL1, 0x18, 0); //ALTSETL1 00
+ amazon_writel_masked(AMAZON_GPIO_P1_OD, 0x18, 0x10);
+
+ /* set up the CLC */
+ amazon_writel_masked(AMAZON_ASC_CLC, AMAZON_ASC_CLC_DISS, 0);
+ amazon_writel_masked(AMAZON_ASC_CLC, ASCCLC_RMCMASK, 1 << ASCCLC_RMCOFFSET);
+
+ /* asynchronous mode */
+ con = ASCCON_M_8ASYNC | ASCCON_FEN | ASCCON_OEN | ASCCON_PEN;
+
+ /* choose the line - there's only one */
+ amazon_writel(0, AMAZON_ASC_PISEL);
+ amazon_writel(((AMAZONASC_TXFIFO_FL << ASCTXFCON_TXFITLOFF) & ASCTXFCON_TXFITLMASK) | ASCTXFCON_TXFEN | ASCTXFCON_TXFFLU,
+ AMAZON_ASC_TXFCON);
+ amazon_writel(((AMAZONASC_RXFIFO_FL << ASCRXFCON_RXFITLOFF) & ASCRXFCON_RXFITLMASK) | ASCRXFCON_RXFEN | ASCRXFCON_RXFFLU,
+ AMAZON_ASC_RXFCON);
+ wmb();
+
+ amazon_writel_masked(AMAZON_ASC_CON, con, con);
+
+ retval = request_irq(AMAZONASC_RIR, amazonasc_rx_int, 0, "asc_rx", port);
+ if (retval){
+ printk("failed to request amazonasc_rx_int\n");
+ return retval;
+ }
+ retval = request_irq(AMAZONASC_TIR, amazonasc_tx_int, 0, "asc_tx", port);
+ if (retval){
+ printk("failed to request amazonasc_tx_int\n");
+ goto err1;
+ }
+
+ retval = request_irq(AMAZONASC_EIR, amazonasc_er_int, 0, "asc_er", port);
+ if (retval){
+ printk("failed to request amazonasc_er_int\n");
+ goto err2;
+ }
+
+ local_irq_restore(flags);
+ return 0;
+
+err2:
+ free_irq(AMAZONASC_TIR, port);
+
+err1:
+ free_irq(AMAZONASC_RIR, port);
+ local_irq_restore(flags);
+ return retval;
+}
+
+static void amazonasc_shutdown(struct uart_port *port)
+{
+ free_irq(AMAZONASC_RIR, port);
+ free_irq(AMAZONASC_TIR, port);
+ free_irq(AMAZONASC_EIR, port);
+ /*
+ * disable the baudrate generator to disable the ASC
+ */
+ amazon_writel(0, AMAZON_ASC_CON);
+
+ /* flush and then disable the fifos */
+ amazon_writel_masked(AMAZON_ASC_RXFCON, ASCRXFCON_RXFFLU, ASCRXFCON_RXFFLU);
+ amazon_writel_masked(AMAZON_ASC_RXFCON, ASCRXFCON_RXFEN, 0);
+ amazon_writel_masked(AMAZON_ASC_TXFCON, ASCTXFCON_TXFFLU, ASCTXFCON_TXFFLU);
+ amazon_writel_masked(AMAZON_ASC_TXFCON, ASCTXFCON_TXFEN, 0);
+}
+
+static void amazonasc_set_termios(struct uart_port *port, struct ktermios *new, struct ktermios *old)
+{
+ unsigned int cflag;
+ unsigned int iflag;
+ unsigned int baud, quot;
+ unsigned int con = 0;
+ unsigned long flags;
+
+ cflag = new->c_cflag;
+ iflag = new->c_iflag;
+
+ /* byte size and parity */
+ switch (cflag & CSIZE) {
+ /* 7 bits are always with parity */
+ case CS7: con = ASCCON_M_7ASYNCPAR; break;
+ /* the ASC only suports 7 and 8 bits */
+ case CS5:
+ case CS6:
+ default:
+ if (cflag & PARENB)
+ con = ASCCON_M_8ASYNCPAR;
+ else
+ con = ASCCON_M_8ASYNC;
+ break;
+ }
+ if (cflag & CSTOPB)
+ con |= ASCCON_STP;
+ if (cflag & PARENB) {
+ if (!(cflag & PARODD))
+ con &= ~ASCCON_ODD;
+ else
+ con |= ASCCON_ODD;
+ }
+
+ port->read_status_mask = ASCCON_OE;
+ if (iflag & INPCK)
+ port->read_status_mask |= ASCCON_FE | ASCCON_PE;
+
+ port->ignore_status_mask = 0;
+ if (iflag & IGNPAR)
+ port->ignore_status_mask |= ASCCON_FE | ASCCON_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 |= ASCCON_OE;
+ }
+
+ /*
+ * Ignore all characters if CREAD is not set.
+ */
+ if ((cflag & CREAD) == 0)
+ port->ignore_status_mask |= UART_DUMMY_UER_RX;
+
+ /* set error signals - framing, parity and overrun */
+ con |= ASCCON_FEN;
+ con |= ASCCON_OEN;
+ con |= ASCCON_PEN;
+ /* enable the receiver */
+ con |= ASCCON_REN;
+
+ /* block the IRQs */
+ local_irq_save(flags);
+
+ /* set up CON */
+ amazon_writel(con, AMAZON_ASC_CON);
+
+ /* Set baud rate - take a divider of 2 into account */
+ baud = uart_get_baud_rate(port, new, old, 0, port->uartclk/16);
+ quot = uart_get_divisor(port, baud);
+ quot = quot/2 - 1;
+
+ /* the next 3 probably already happened when we set CON above */
+ /* disable the baudrate generator */
+ amazon_writel_masked(AMAZON_ASC_CON, ASCCON_R, 0);
+ /* make sure the fractional divider is off */
+ amazon_writel_masked(AMAZON_ASC_CON, ASCCON_FDE, 0);
+ /* set up to use divisor of 2 */
+ amazon_writel_masked(AMAZON_ASC_CON, ASCCON_BRS, 0);
+ /* now we can write the new baudrate into the register */
+ amazon_writel(quot, AMAZON_ASC_BTR);
+ /* turn the baudrate generator back on */
+ amazon_writel_masked(AMAZON_ASC_CON, ASCCON_R, ASCCON_R);
+
+ local_irq_restore(flags);
+}
+
+static const char *amazonasc_type(struct uart_port *port)
+{
+ return port->type == PORT_AMAZONASC ? "AMAZONASC" : NULL;
+}
+
+/*
+ * Release the memory region(s) being used by 'port'
+ */
+static void amazonasc_release_port(struct uart_port *port)
+{
+ return;
+}
+
+/*
+ * Request the memory region(s) being used by 'port'
+ */
+static int amazonasc_request_port(struct uart_port *port)
+{
+ return 0;
+}
+
+/*
+ * Configure/autoconfigure the port.
+ */
+static void amazonasc_config_port(struct uart_port *port, int flags)
+{
+ if (flags & UART_CONFIG_TYPE) {
+ port->type = PORT_AMAZONASC;
+ amazonasc_request_port(port);
+ }
+}
+
+/*
+ * verify the new serial_struct (for TIOCSSERIAL).
+ */
+static int amazonasc_verify_port(struct uart_port *port, struct serial_struct *ser)
+{
+ int ret = 0;
+ if (ser->type != PORT_UNKNOWN && ser->type != PORT_AMAZONASC)
+ 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 amazonasc_pops = {
+ .tx_empty = amazonasc_tx_empty,
+ .set_mctrl = amazonasc_set_mctrl,
+ .get_mctrl = amazonasc_get_mctrl,
+ .stop_tx = amazonasc_stop_tx,
+ .start_tx = amazonasc_start_tx,
+ .stop_rx = amazonasc_stop_rx,
+ .enable_ms = amazonasc_enable_ms,
+ .break_ctl = amazonasc_break_ctl,
+ .startup = amazonasc_startup,
+ .shutdown = amazonasc_shutdown,
+ .set_termios = amazonasc_set_termios,
+ .type = amazonasc_type,
+ .release_port = amazonasc_release_port,
+ .request_port = amazonasc_request_port,
+ .config_port = amazonasc_config_port,
+ .verify_port = amazonasc_verify_port,
+};
+
+static struct uart_port amazonasc_ports[UART_NR] = {
+ {
+ membase: (void *)AMAZON_ASC,
+ mapbase: AMAZON_ASC,
+ iotype: SERIAL_IO_MEM,
+ irq: AMAZONASC_RIR, /* RIR */
+ uartclk: 0, /* filled in dynamically */
+ fifosize: 16,
+ unused: { AMAZONASC_TIR, AMAZONASC_EIR}, /* xmit/error/xmit-buffer-empty IRQ */
+ type: PORT_AMAZONASC,
+ ops: &amazonasc_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+ },
+};
+
+static void amazonasc_console_write(struct console *co, const char *s, u_int count)
+{
+ int i, fifocnt;
+ unsigned long flags;
+ local_irq_save(flags);
+ for (i = 0; i < count;)
+ {
+ /* wait until the FIFO is not full */
+ do
+ {
+ fifocnt = (amazon_readl(AMAZON_ASC_FSTAT) & ASCFSTAT_TXFFLMASK)
+ >> ASCFSTAT_TXFFLOFF;
+ } while (fifocnt == AMAZONASC_TXFIFO_FULL);
+ if (s[i] == '\0')
+ {
+ break;
+ }
+ if (s[i] == '\n')
+ {
+ amazon_writel('\r', AMAZON_ASC_TBUF);
+ do
+ {
+ fifocnt = (amazon_readl(AMAZON_ASC_FSTAT) &
+ ASCFSTAT_TXFFLMASK) >> ASCFSTAT_TXFFLOFF;
+ } while (fifocnt == AMAZONASC_TXFIFO_FULL);
+ }
+ amazon_writel(s[i], AMAZON_ASC_TBUF);
+ i++;
+ }
+
+ local_irq_restore(flags);
+}
+
+static void __init
+amazonasc_console_get_options(struct uart_port *port, int *baud, int *parity, int *bits)
+{
+ u_int lcr_h;
+
+ lcr_h = amazon_readl(AMAZON_ASC_CON);
+ /* do this only if the ASC is turned on */
+ if (lcr_h & ASCCON_R) {
+ u_int quot, div, fdiv, frac;
+
+ *parity = 'n';
+ if ((lcr_h & ASCCON_MODEMASK) == ASCCON_M_7ASYNCPAR ||
+ (lcr_h & ASCCON_MODEMASK) == ASCCON_M_8ASYNCPAR) {
+ if (lcr_h & ASCCON_ODD)
+ *parity = 'o';
+ else
+ *parity = 'e';
+ }
+
+ if ((lcr_h & ASCCON_MODEMASK) == ASCCON_M_7ASYNCPAR)
+ *bits = 7;
+ else
+ *bits = 8;
+
+ quot = amazon_readl(AMAZON_ASC_BTR) + 1;
+
+ /* this gets hairy if the fractional divider is used */
+ if (lcr_h & ASCCON_FDE)
+ {
+ div = 1;
+ fdiv = amazon_readl(AMAZON_ASC_FDV);
+ if (fdiv == 0)
+ fdiv = 512;
+ frac = 512;
+ }
+ else
+ {
+ div = lcr_h & ASCCON_BRS ? 3 : 2;
+ fdiv = frac = 1;
+ }
+ /*
+ * This doesn't work exactly because we use integer
+ * math to calculate baud which results in rounding
+ * errors when we try to go from quot -> baud !!
+ * Try to make this work for both the fractional divider
+ * and the simple divider. Also try to avoid rounding
+ * errors using integer math.
+ */
+
+ *baud = frac * (port->uartclk / (div * 512 * 16 * quot));
+ if (*baud > 1100 && *baud < 2400)
+ *baud = 1200;
+ if (*baud > 2300 && *baud < 4800)
+ *baud = 2400;
+ if (*baud > 4700 && *baud < 9600)
+ *baud = 4800;
+ if (*baud > 9500 && *baud < 19200)
+ *baud = 9600;
+ if (*baud > 19000 && *baud < 38400)
+ *baud = 19200;
+ if (*baud > 38400 && *baud < 57600)
+ *baud = 38400;
+ if (*baud > 57600 && *baud < 115200)
+ *baud = 57600;
+ if (*baud > 115200 && *baud < 230400)
+ *baud = 115200;
+ }
+}
+
+static int __init amazonasc_console_setup(struct console *co, char *options)
+{
+ struct uart_port *port;
+ int baud = 115200;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+
+ /* this assumes: CON.BRS = CON.FDE = 0 */
+ if (uartclk == 0)
+ uartclk = amazon_get_fpi_hz();
+ co->index = 0;
+ port = &amazonasc_ports[0];
+ amazonasc_ports[0].uartclk = uartclk;
+ amazonasc_ports[0].type = PORT_AMAZONASC;
+
+ if (options){
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ }
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+static struct uart_driver amazonasc_reg;
+static struct console amazonasc_console = {
+ name: "ttyS",
+ write: amazonasc_console_write,
+ device: uart_console_device,
+ setup: amazonasc_console_setup,
+ flags: CON_PRINTBUFFER,
+ index: -1,
+ data: &amazonasc_reg,
+};
+
+static struct uart_driver amazonasc_reg = {
+ .owner = THIS_MODULE,
+ .driver_name = "serial",
+ .dev_name = "ttyS",
+ .major = TTY_MAJOR,
+ .minor = 64,
+ .nr = UART_NR,
+ .cons = &amazonasc_console,
+};
+
+static int __init amazon_asc_probe(struct platform_device *dev)
+{
+ unsigned char res;
+ uart_register_driver(&amazonasc_reg);
+ res = uart_add_one_port(&amazonasc_reg, &amazonasc_ports[0]);
+ return res;
+}
+
+static int amazon_asc_remove(struct platform_device *dev)
+{
+ uart_unregister_driver(&amazonasc_reg);
+ return 0;
+}
+
+static struct platform_driver amazon_asc_driver = {
+ .probe = amazon_asc_probe,
+ .remove = amazon_asc_remove,
+ .driver = {
+ .name = "amazon_asc",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init amazon_asc_init(void)
+{
+ int ret = platform_driver_register(&amazon_asc_driver);
+ if (ret)
+ printk(KERN_WARNING "amazon_asc: error registering platfom driver!\n");
+ return ret;
+}
+
+static void __exit amazon_asc_cleanup(void)
+{
+ platform_driver_unregister(&amazon_asc_driver);
+}
+
+module_init(amazon_asc_init);
+module_exit(amazon_asc_cleanup);
+
+MODULE_AUTHOR("Gary Jennejohn, Felix Fietkau, John Crispin");
+MODULE_DESCRIPTION("MIPS AMAZONASC serial port driver");
+MODULE_LICENSE("GPL");
+
projects / openwrt / svn-archive / archive.git / blobdiff