diff options
Diffstat (limited to 'target/linux/ubicom32/files/drivers/serial/ubi32_serdes.c')
| -rw-r--r-- | target/linux/ubicom32/files/drivers/serial/ubi32_serdes.c | 817 |
1 files changed, 0 insertions, 817 deletions
diff --git a/target/linux/ubicom32/files/drivers/serial/ubi32_serdes.c b/target/linux/ubicom32/files/drivers/serial/ubi32_serdes.c deleted file mode 100644 index 79037da49..000000000 --- a/target/linux/ubicom32/files/drivers/serial/ubi32_serdes.c +++ /dev/null @@ -1,817 +0,0 @@ -/* - * drivers/serial/ubi32_serdes.c - * Ubicom32 On-Chip Serial Driver - * - * (C) Copyright 2009, Ubicom, Inc. - * - * This file is part of the Ubicom32 Linux Kernel Port. - * - * The Ubicom32 Linux Kernel Port 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. - * - * The Ubicom32 Linux Kernel Port 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 the Ubicom32 Linux Kernel Port. If not, - * see <http://www.gnu.org/licenses/>. - * - * Ubicom32 implementation derived from (with many thanks): - * arch/m68knommu - * arch/blackfin - * arch/parisc - */ -#include <linux/module.h> -#include <linux/ioport.h> -#include <linux/init.h> -#include <linux/console.h> -#include <linux/sysrq.h> -#include <linux/platform_device.h> -#include <linux/tty.h> -#include <linux/tty_flip.h> -#include <linux/serial_core.h> - -#include <asm/ip5000.h> -#include <asm/ubicom32suart.h> - - -#define SERIAL_UBICOM_PIN_RXD (1 << 0) -#define SERIAL_UBICOM_PIN_TXD (1 << 6) -#define SERIAL_UBICOM_CTL0 0x8b300000 -#define SERIAL_UBICOM_CTL1 0x00000009 - -#define SERIAL_UBICOM_DATA_BIT 8 /* Fixed parameter - do not change */ -#define SERIAL_UBICOM_PAR_BIT 0 /* Fixed parameter - do not change */ -#define SERIAL_UBICOM_STOP_BIT 1 /* Fixed parameter - do not change */ - -/* UART name and device definitions */ -#define UBI32_SERDES_NAME "ttyUS" // XXX -#define UBI32_SERDES_MAJOR 206 // XXX -#define UBI32_SERDES_MINOR 64 // XXX - -#define PORT_UBI32_SERDES 1234 -#define NR_PORTS 1 - -struct uart_port ubi32_serdes_ports[NR_PORTS]; - -struct ubi32_serdes_resource { - void *uart_base_addr; - int uart_irq; - int uart_clock; -} ubi32_serdes_resource[NR_PORTS] = { - /* - * Get params from kernel command line (required for early printk) - * or from platform resources. - */ - {0, 0, 0} -}; - -/* - * Can get overridden by 'serdes=' kernel command line. - */ -static int ubi32_serdes_default_baud_rate = 115200; - - -#define IO_PORT(port) ((struct ubicom32_io_port *)port->membase) -#define IO_PORT_INT_STATUS(port) (IO_PORT(port)->int_status) -#define IO_PORT_INT_MASK(port) (IO_PORT(port)->int_mask) -#define IO_PORT_INT_CLR(port) (IO_PORT(port)->int_clr) - - -/* - * ubi32_serdes_get_char() - */ -static u8_t ubi32_serdes_get_char(struct ubicom32_io_port *io_port) -{ - /* - * Read from hardware (forced 32-bit atomic read). - */ - u32_t data = 0; - - if ( io_port ) { - io_port->int_clr = IO_PORTX_INT_SERDES_RXBF; - asm volatile ( - "move.4 %0, %1 \n\t" - : "=r" (data) - : "m" (*(u32_t *)&(io_port->rx_fifo)) - ); - } - - return (u8_t)(data & 0x000000ff); -} - -/* - * ubi32_serdes_put_char() - */ -static void ubi32_serdes_put_char(struct ubicom32_io_port *io_port, u8_t c) -{ - u32_t data = 0x0000fe00 | (c << 1); - - if ( io_port ) { - /* - * Fixed data format: - * [LSB]1 start bit - 8 data bits - no parity - 1 stop bit[MSB] - */ - io_port->int_clr = IO_PORTX_INT_SERDES_TXBE; - io_port->ctl2 = data; - io_port->int_set = IO_PORTX_INT_SERDES_TXBUF_VALID; - } -} - -static void ubi32_serdes_hw_init(struct uart_port *port, int baud) -{ - struct ubicom32_io_port *io_port = IO_PORT(port); - - if ( io_port ) { - /* - * Put port functions 1-4 into reset state. - * Function 0 (GPIO) does not need or have a reset bit. - * - * Select SERDES function for restart below. - */ - io_port->function = - IO_FUNC_FUNCTION_RESET(1) | IO_FUNC_FUNCTION_RESET(2) | - IO_FUNC_FUNCTION_RESET(3) | IO_FUNC_FUNCTION_RESET(4) | - IO_PORTX_FUNC_SERDES; - - /* - * Configure SERDES baudrate - */ - if ( baud == 0 ) { - baud = ubi32_serdes_default_baud_rate; - } - - io_port->ctl0 = - SERIAL_UBICOM_CTL0 | - ((port->uartclk / (16 * baud)) - 1); - - io_port->ctl1 = - SERIAL_UBICOM_CTL1; - - /* - * don't interrupt until startup and start_tx - */ - io_port->int_mask = 0; - - /* - * Set TXD pin output, RXD input and prevent GPIO - * override on the TXD & RXD pins - */ - io_port->gpio_ctl &= ~SERIAL_UBICOM_PIN_RXD; - io_port->gpio_ctl |= SERIAL_UBICOM_PIN_TXD; - io_port->gpio_mask &= ~(SERIAL_UBICOM_PIN_RXD | SERIAL_UBICOM_PIN_TXD); - - /* - * Restart (un-reset) the port's SERDES function. - */ - io_port->function &= ~(IO_FUNC_FUNCTION_RESET(IO_PORTX_FUNC_SERDES)); - } -} - -#define ULITE_STATUS_RXVALID IO_PORTX_INT_SERDES_RXBF -#define ULITE_STATUS_OVERRUN 0 -#define ULITE_STATUS_FRAME 0 -#define ULITE_STATUS_PARITY 0 -#define ULITE_STATUS_TXEMPTY IO_PORTX_INT_SERDES_TXBE -#define ULITE_STATUS_TXFULL 0 - -static int ubi32_serdes_receive(struct uart_port *port, int stat) -{ - struct tty_struct *tty = port->info->port.tty; - unsigned char ch = 0; - char flag = TTY_NORMAL; - - if ((stat & (ULITE_STATUS_RXVALID | ULITE_STATUS_OVERRUN - | ULITE_STATUS_FRAME)) == 0) - return 0; - - /* stats */ - if (stat & ULITE_STATUS_RXVALID) { - port->icount.rx++; - ch = ubi32_serdes_get_char((struct ubicom32_io_port *)port->membase); - - if (stat & ULITE_STATUS_PARITY) - port->icount.parity++; - } - - if (stat & ULITE_STATUS_OVERRUN) - port->icount.overrun++; - - if (stat & ULITE_STATUS_FRAME) - port->icount.frame++; - - - /* drop byte with parity error if IGNPAR specificed */ - if (stat & port->ignore_status_mask & ULITE_STATUS_PARITY) - stat &= ~ULITE_STATUS_RXVALID; - - stat &= port->read_status_mask; - - if (stat & ULITE_STATUS_PARITY) - flag = TTY_PARITY; - - stat &= ~port->ignore_status_mask; - - if (stat & ULITE_STATUS_RXVALID) - tty_insert_flip_char(tty, ch, flag); - - if (stat & ULITE_STATUS_FRAME) - tty_insert_flip_char(tty, 0, TTY_FRAME); - - if (stat & ULITE_STATUS_OVERRUN) - tty_insert_flip_char(tty, 0, TTY_OVERRUN); - - return 1; -} - -/* - * interrupts are disabled on entry - */ -static void ubi32_serdes_stop_tx(struct uart_port *port) -{ - IO_PORT_INT_MASK(port) = IO_PORT_INT_MASK(port) & ~IO_PORTX_INT_SERDES_TXBE; -} - -static int ubi32_serdes_transmit(struct uart_port *port, int stat) -{ - struct circ_buf *xmit = &port->info->xmit; - - if (!(stat & IO_PORTX_INT_SERDES_TXBE)) - return 0; - - if (port->x_char) { - ubi32_serdes_put_char(IO_PORT(port), port->x_char); - port->x_char = 0; - port->icount.tx++; - return 1; - } - - if (uart_circ_empty(xmit) || uart_tx_stopped(port)) { - ubi32_serdes_stop_tx(port); - return 0; - } - - ubi32_serdes_put_char(IO_PORT(port), xmit->buf[xmit->tail]); - xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE-1); - port->icount.tx++; - - /* wake up */ - if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) - uart_write_wakeup(port); - - if (uart_circ_empty(xmit)) - ubi32_serdes_stop_tx(port); - - return 1; -} - -/* - * port is locked and interrupts are disabled - */ -static void ubi32_serdes_start_tx(struct uart_port *port) -{ - IO_PORT_INT_MASK(port) = IO_PORT_INT_MASK(port) | IO_PORTX_INT_SERDES_TXBE; - ubi32_serdes_transmit(port, IO_PORT_INT_STATUS(port)); -} - -/* - * Interrupts are enabled - */ -static void ubi32_serdes_stop_rx(struct uart_port *port) -{ - /* don't forward any more data (like !CREAD) */ - port->ignore_status_mask = IO_PORTX_INT_SERDES_RXBF; -} - -/* - * Set the modem control timer to fire immediately. - */ -static void ubi32_serdes_enable_ms(struct uart_port *port) -{ - /* N/A */ -} - -static irqreturn_t ubi32_serdes_isr(int irq, void *dev_id) -{ - struct uart_port *port = dev_id; - int busy; - - spin_lock(&port->lock); - - do { - int stat = IO_PORT_INT_STATUS(port); - busy = ubi32_serdes_receive(port, stat); - busy |= ubi32_serdes_transmit(port, stat); - } while (busy); - - tty_flip_buffer_push(port->info->port.tty); - - spin_unlock(&port->lock); - - return IRQ_HANDLED; -} - -/* - * Return TIOCSER_TEMT when transmitter is not busy. - */ -static unsigned int ubi32_serdes_tx_empty(struct uart_port *port) -{ - unsigned long flags; - unsigned int ret; - - spin_lock_irqsave(&port->lock, flags); - ret = IO_PORT_INT_STATUS(port); - spin_unlock_irqrestore(&port->lock, flags); - - return ret & ULITE_STATUS_TXEMPTY ? TIOCSER_TEMT : 0; -} - -static unsigned int ubi32_serdes_get_mctrl(struct uart_port *port) -{ - return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR; -} - -static void ubi32_serdes_set_mctrl(struct uart_port *port, unsigned int mctrl) -{ - /* N/A */ -} - -/* - * Interrupts are always disabled. - */ -static void ubi32_serdes_break_ctl(struct uart_port *port, int break_state) -{ - /* N/A */ -} - -static int ubi32_serdes_startup(struct uart_port *port) -{ - if (request_irq(port->irq, ubi32_serdes_isr, IRQF_DISABLED, - "UBI32_SERDES", port)) { - printk(KERN_NOTICE "Unable to attach port interrupt\n"); - return -EBUSY; - } - - IO_PORT_INT_CLR(port) = IO_PORTX_INT_SERDES_RXBF; - IO_PORT_INT_MASK(port) = IO_PORTX_INT_SERDES_RXBF; - return 0; -} - -static void ubi32_serdes_shutdown(struct uart_port *port) -{ - struct ubi32_serdes_port *uart = (struct ubi32_serdes_port *)port; - - IO_PORT_INT_MASK(port) = 0; - free_irq(port->irq, uart); -} - -static void -ubi32_serdes_set_termios(struct uart_port *port, struct ktermios *termios, - struct ktermios *old) -{ - unsigned long flags; - unsigned int baud; - - spin_lock_irqsave(&port->lock, flags); - - port->read_status_mask = ULITE_STATUS_RXVALID | ULITE_STATUS_OVERRUN - | ULITE_STATUS_TXFULL; - - if (termios->c_iflag & INPCK) - port->read_status_mask |= - ULITE_STATUS_PARITY | ULITE_STATUS_FRAME; - - port->ignore_status_mask = 0; - if (termios->c_iflag & IGNPAR) - port->ignore_status_mask |= ULITE_STATUS_PARITY - | ULITE_STATUS_FRAME | ULITE_STATUS_OVERRUN; - - /* ignore all characters if CREAD is not set */ - if ((termios->c_cflag & CREAD) == 0) - port->ignore_status_mask |= - ULITE_STATUS_RXVALID | ULITE_STATUS_PARITY - | ULITE_STATUS_FRAME | ULITE_STATUS_OVERRUN; - - /* update timeout */ - baud = uart_get_baud_rate(port, termios, old, 0, 460800); - uart_update_timeout(port, termios->c_cflag, baud); - - IO_PORT(port)->ctl0 = SERIAL_UBICOM_CTL0 | - ((port->uartclk / (16 * baud)) - 1); - - spin_unlock_irqrestore(&port->lock, flags); -} - -static const char *ubi32_serdes_type(struct uart_port *port) -{ - return port->type == PORT_UBI32_SERDES ? "UBI32_SERDES" : NULL; -} - -/* - * Release the memory region(s) being used by 'port'. - */ -static void ubi32_serdes_release_port(struct uart_port *port) -{ -} - -/* - * Request the memory region(s) being used by 'port'. - */ -static int ubi32_serdes_request_port(struct uart_port *port) -{ - return 0; -} - -/* - * Configure/autoconfigure the port. - */ -static void ubi32_serdes_config_port(struct uart_port *port, int flags) -{ - if (flags & UART_CONFIG_TYPE && - ubi32_serdes_request_port(port) == 0) - port->type = PORT_UBI32_SERDES; -} - -/* - * Verify the new serial_struct (for TIOCSSERIAL). - * The only change we allow are to the flags and type, and - * even then only between PORT_UBI32_SERDES and PORT_UNKNOWN - */ -static int -ubi32_serdes_verify_port(struct uart_port *port, struct serial_struct *ser) -{ - return 0; -} - -static struct uart_ops ubi32_serdes_pops = { - .tx_empty = ubi32_serdes_tx_empty, - .set_mctrl = ubi32_serdes_set_mctrl, - .get_mctrl = ubi32_serdes_get_mctrl, - .stop_tx = ubi32_serdes_stop_tx, - .start_tx = ubi32_serdes_start_tx, - .stop_rx = ubi32_serdes_stop_rx, - .enable_ms = ubi32_serdes_enable_ms, - .break_ctl = ubi32_serdes_break_ctl, - .startup = ubi32_serdes_startup, - .shutdown = ubi32_serdes_shutdown, - .set_termios = ubi32_serdes_set_termios, - .type = ubi32_serdes_type, - .release_port = ubi32_serdes_release_port, - .request_port = ubi32_serdes_request_port, - .config_port = ubi32_serdes_config_port, - .verify_port = ubi32_serdes_verify_port, -}; - -static void __init ubi32_serdes_init_ports(void) -{ - int i; - - for (i = 0; i < NR_PORTS; i++) { - ubi32_serdes_ports[i].uartclk = ubi32_serdes_resource[i].uart_clock; - ubi32_serdes_ports[i].ops = &ubi32_serdes_pops; - ubi32_serdes_ports[i].line = i; - ubi32_serdes_ports[i].iotype = UPIO_MEM; - ubi32_serdes_ports[i].membase = - (void __iomem *)ubi32_serdes_resource[i].uart_base_addr; - ubi32_serdes_ports[i].mapbase = - (resource_size_t)ubi32_serdes_resource[i].uart_base_addr; - ubi32_serdes_ports[i].irq = - ubi32_serdes_resource[i].uart_irq; - ubi32_serdes_ports[i].flags = UPF_BOOT_AUTOCONF; - - ubi32_serdes_hw_init(&ubi32_serdes_ports[i], 0); - } - -} - -#ifdef CONFIG_SERIAL_UBI32_SERDES_CONSOLE -/* - * If the port was already initialised (eg, by a boot loader), - * try to determine the current setup. - */ -static void __init -ubi32_serdes_console_get_options(struct uart_port *port, int *baud) -{ - u32 round_to = 1200; - u32 real_baud; - - /* - * We might get called before platform init and with no - * kernel command line options, so port might be NULL. - */ - *baud = ubi32_serdes_default_baud_rate;; - if ( IO_PORT(port) == 0 ) - return; - - real_baud = port->uartclk - / (16 * ((IO_PORT(port)->ctl0 & ~SERIAL_UBICOM_CTL0) + 1)); - - *baud = ((real_baud + round_to - 1) / round_to) * round_to; - - pr_debug("%s:baud = %d, real_baud = %d\n", __FUNCTION__, *baud, real_baud); -} -#endif - -#if defined(CONFIG_SERIAL_UBI32_SERDES_CONSOLE) || defined(CONFIG_EARLY_PRINTK) -static struct uart_driver ubi32_serdes_reg; - -static int __init -ubi32_serdes_console_setup(struct console *co, char *options) -{ - struct uart_port *port; -#ifdef CONFIG_SERIAL_UBI32_SERDES_CONSOLE - int baud = ubi32_serdes_default_baud_rate; - int bits = 8; - int parity = 'n'; - int flow = 'n'; -#endif - - /* - * Check whether an invalid uart number has been specified, and - * if so, search for the first available port that does have - * console support. - */ - if (co->index == -1 || co->index >= NR_PORTS) - co->index = 0; - port = &ubi32_serdes_ports[co->index]; - -#ifdef CONFIG_SERIAL_UBI32_SERDES_CONSOLE - if (options) { - uart_parse_options(options, &baud, &parity, &bits, &flow); - ubi32_serdes_hw_init(port, baud); - } - else - ubi32_serdes_console_get_options(port, &baud); - - return uart_set_options(port, co, baud, parity, bits, flow); -#else - return 0; -#endif -} -#endif /* defined (CONFIG_SERIAL_UBI32_SERDES_CONSOLE) || - defined (CONFIG_EARLY_PRINTK) */ - -#ifdef CONFIG_SERIAL_UBI32_SERDES_CONSOLE -static void -ubi32_serdes_console_putchar(struct uart_port *port, int ch) -{ - if ( IO_PORT(port) ) { - while (!(IO_PORT_INT_STATUS(port) & IO_PORTX_INT_SERDES_TXBE)) - barrier(); - ubi32_serdes_put_char(IO_PORT(port), ch); - } -} - -/* - * Interrupts are disabled on entering - */ -static void -ubi32_serdes_console_write(struct console *co, const char *s, unsigned int count) -{ - struct uart_port *port = &ubi32_serdes_ports[co->index]; - unsigned long flags = 0; - - spin_lock_irqsave(&port->lock, flags); - uart_console_write(port, s, count, ubi32_serdes_console_putchar); - spin_unlock_irqrestore(&port->lock, flags); - -} - -static struct console ubi32_serdes_console = { - .name = UBI32_SERDES_NAME, - .write = ubi32_serdes_console_write, - .device = uart_console_device, - .setup = ubi32_serdes_console_setup, - .flags = CON_PRINTBUFFER, - .index = -1, - .data = &ubi32_serdes_reg, -}; - -static int __init ubi32_serdes_console_init(void) -{ - ubi32_serdes_init_ports(); - register_console(&ubi32_serdes_console); - return 0; -} -console_initcall(ubi32_serdes_console_init); - -#define UBI32_SERDES_CONSOLE &ubi32_serdes_console -#else -#define UBI32_SERDES_CONSOLE NULL -#endif /* CONFIG_SERIAL_UBI32_SERDES_CONSOLE */ - - -#ifdef CONFIG_EARLY_PRINTK -static __init void ubi32_serdes_early_putc(struct uart_port *port, int ch) -{ - unsigned timeout = 0xffff; - - while ((!(IO_PORT_INT_STATUS(port) & IO_PORTX_INT_SERDES_TXBE)) && --timeout) - cpu_relax(); - ubi32_serdes_put_char(IO_PORT(port), ch); -} - -static __init void ubi32_serdes_early_write(struct console *con, const char *s, - unsigned int n) -{ - struct uart_port *port = &ubi32_serdes_ports[con->index]; - unsigned int i; - - for (i = 0; i < n; i++, s++) { - if (*s == '\n') - ubi32_serdes_early_putc(port, '\r'); - ubi32_serdes_early_putc(port, *s); - } -} - -static struct __init console ubi32_serdes_early_console = { - .name = "early_US", - .write = ubi32_serdes_early_write, - .device = uart_console_device, - .flags = CON_PRINTBUFFER, - .setup = ubi32_serdes_console_setup, - .index = -1, - .data = &ubi32_serdes_reg, -}; - -/* - * XXX Unused in our driver. Need to find out what the termios initialization is good/needed for. - */ -struct console __init *ubi32_serdes_early_init(unsigned int port_index, - unsigned int cflag) -{ - struct uart_port *uart; - struct ktermios t; - - if (port_index == -1 || port_index >= NR_PORTS) - port_index = 0; - ubi32_serdes_init_ports(); - ubi32_serdes_early_console.index = port_index; - uart = &ubi32_serdes_ports[port_index]; - t.c_cflag = cflag; - t.c_iflag = 0; - t.c_oflag = 0; - t.c_lflag = ICANON; - t.c_line = port_index; - ubi32_serdes_set_termios(uart, &t, &t); - return &ubi32_serdes_early_console; -} - -#endif /* CONFIG_SERIAL_UBI32_SERDES_CONSOLE */ - -static struct uart_driver ubi32_serdes_reg = { - .owner = THIS_MODULE, - .driver_name = "ubi32_serdes", - .dev_name = UBI32_SERDES_NAME, - .major = UBI32_SERDES_MAJOR, - .minor = UBI32_SERDES_MINOR, - .nr = NR_PORTS, - .cons = UBI32_SERDES_CONSOLE, -}; - -static int ubi32_serdes_suspend(struct platform_device *dev, pm_message_t state) -{ - struct uart_port *port = platform_get_drvdata(dev); - - if (port) - uart_suspend_port(&ubi32_serdes_reg, port); - - return 0; -} - -static int ubi32_serdes_resume(struct platform_device *dev) -{ - struct uart_port *port = platform_get_drvdata(dev); - - if (port) - uart_resume_port(&ubi32_serdes_reg, port); - - return 0; -} - -static int ubi32_serdes_probe(struct platform_device *dev) -{ - struct resource *res = dev->resource; - int i; - - for (i = 0; i < dev->num_resources; i++, res++) { - if (res->flags & IORESOURCE_MEM) { - ubi32_serdes_resource[0].uart_base_addr = (void *) res->start; - } - else if (res->flags & IORESOURCE_IRQ) { - ubi32_serdes_resource[0].uart_irq = res->start; - } - else if (res->flags & UBICOM32_SUART_IORESOURCE_CLOCK) { - ubi32_serdes_resource[0].uart_clock = res->start; - } - } - - ubi32_serdes_init_ports(); - - return 0; -} - -static int ubi32_serdes_remove(struct platform_device *pdev) -{ - struct uart_port *port = platform_get_drvdata(pdev); - - platform_set_drvdata(pdev, NULL); - - if (port) - uart_remove_one_port(&ubi32_serdes_reg, port); - - return 0; -} - -static struct platform_driver ubi32_serdes_driver = { - .remove = ubi32_serdes_remove, - .suspend = ubi32_serdes_suspend, - .resume = ubi32_serdes_resume, - .driver = { - .name = "ubicom32suart", - .owner = THIS_MODULE, - }, -}; - - -#ifndef MODULE -/* - * Called at boot time. - * - * You can specify IO base, IRQ, and clock for the serdes serial port - * using kernel command line "serdes=0xiobase,irq,clock". Values - * specified will be overwritten by platform device data, if present. - */ -static int __init ubi32_serdes_setup(char *str) -{ -#define N_PARMS (4+1) - int ints[N_PARMS]; - int i; - - str = get_options(str, ARRAY_SIZE(ints), ints); - - for (i = 0; i < N_PARMS; i++) { - if (i < ints[0]) { - if (i == 0) { - ubi32_serdes_resource[0].uart_base_addr = (void *) ints[i+1]; - } - else if (i == 1) { - ubi32_serdes_resource[0].uart_irq = ints[i+1]; - } - else if (i == 2) { - ubi32_serdes_resource[0].uart_clock = ints[i+1]; - } - else if (i == 3) { - ubi32_serdes_default_baud_rate = ints[i+1]; - } - } - } - return 1; -} - -__setup("serdes=", ubi32_serdes_setup); -#endif - -static int __init ubi32_serdes_init(void) -{ - int ret; - - pr_info("Serial: Ubicom32 serdes uart serial driver\n"); - - ret = platform_driver_probe(&ubi32_serdes_driver, ubi32_serdes_probe); - if (ret != 0) { - printk(KERN_INFO "serdes platform_driver_probe() failed: %d\n", ret); - return ret; - } - - ubi32_serdes_init_ports(); - - ret = uart_register_driver(&ubi32_serdes_reg); - if ( ret == 0 ) { - ret = uart_add_one_port(&ubi32_serdes_reg, &ubi32_serdes_ports[0]); - if ( ret != 0 ) { - uart_unregister_driver(&ubi32_serdes_reg); - } - } - - return ret; -} - -static void __exit ubi32_serdes_exit(void) -{ - platform_driver_unregister(&ubi32_serdes_driver); - uart_unregister_driver(&ubi32_serdes_reg); -} - -module_init(ubi32_serdes_init); -module_exit(ubi32_serdes_exit); - -MODULE_AUTHOR("Rainer Keller <rkeller@ubicom.com>"); -MODULE_DESCRIPTION("Ubicom generic serial port driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS_CHARDEV_MAJOR(UBI32_SERDES_MAJOR); -MODULE_ALIAS("platform:ubi32_serdes"); |