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openwrt-xburst/target/linux/storm/patches/1021-serial.patch
kaloz 18aeebfc58 add preliminary support for Storm SL3512 based devices, not ready yet 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10956 3c298f89-4303-0410-b956-a3cf2f4a3e73
2008-04-27 17:03:01 +00:00

2826 lines
75 KiB
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Index: linux-2.6.23.16/drivers/serial/it8712.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.23.16/drivers/serial/it8712.c 2008-03-15 17:59:53.568330991 +0200
@@ -0,0 +1,858 @@
+/*
+ * linux/drivers/char/serial_uart00.c
+ *
+ * Driver for UART00 serial ports
+ *
+ * Based on drivers/char/serial_amba.c, by ARM Limited &
+ * Deep Blue Solutions Ltd.
+ * Copyright 2001 Altera Corporation
+ *
+ * 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
+ *
+ * $Id: it8712.c,v 1.2 2006/06/06 06:36:04 middle Exp $
+ *
+ */
+#include <linux/module.h>
+#include <linux/tty.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/serial.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+#include <asm/hardware.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <asm/sizes.h>
+
+#if defined(CONFIG_SERIAL_IT8712_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
+#include <linux/serial_core.h>
+#include <asm/arch/sl2312.h>
+#include <asm/arch/int_ctrl.h>
+#include <asm/arch/it8712.h>
+#include "it8712.h"
+
+//#define DEBUG 1
+#define UART_NR 1
+
+#define SERIAL_IT8712_NAME "ttySI"
+#define SERIAL_IT8712_MAJOR 204
+#define SERIAL_IT8712_MINOR 41 /* Temporary - will change in future */
+#define SERIAL_IT8712_NR UART_NR
+#define UART_PORT_SIZE 0x50
+#define LPC_HOST_CONTINUE_MODE 0x00000040
+
+#define IT8712_NO_PORTS UART_NR
+#define IT8712_ISR_PASS_LIMIT 256
+
+#define LPC_BUS_CTRL *(unsigned int*)(IO_ADDRESS(SL2312_LPC_HOST_BASE + 4))
+#define LPC_BUS_STATUS *(unsigned int*)(IO_ADDRESS(SL2312_LPC_HOST_BASE + 4))
+#define LPC_SERIAL_IRQ_CTRL *(unsigned int*)(IO_ADDRESS(SL2312_LPC_HOST_BASE + 8))
+#define LPC_SERIAL_IRQ_STATUS *(unsigned int*)(IO_ADDRESS(SL2312_LPC_HOST_BASE + 0x0c))
+#define LPC_SERIAL_IRQ_TRITYPE *(unsigned int*)(IO_ADDRESS(SL2312_LPC_HOST_BASE + 0x10))
+#define LPC_SERIAL_IRQ_POLARITY *(unsigned int*)(IO_ADDRESS(SL2312_LPC_HOST_BASE + 0x14))
+#define LPC_SERIAL_IRQ_ENABLE *(unsigned int*)(IO_ADDRESS(SL2312_LPC_HOST_BASE + 0x18))
+
+
+
+
+/*
+ * Access macros for the SL2312 UARTs
+ */
+#define UART_GET_INT_STATUS(p) (inb(((p)->membase+UART_IIR)) & 0x0F) // interrupt identification
+#define UART_PUT_IER(p, c) outb(c,((p)->membase+UART_IER)) // interrupt enable
+#define UART_GET_IER(p) inb(((p)->membase+UART_IER))
+#define UART_PUT_CHAR(p, c) outb(c,((p)->membase+UART_TX)) // transmitter holding
+#define UART_GET_CHAR(p) inb(((p)->membase+UART_RX)) // receive buffer
+#define UART_GET_LSR(p) inb(((p)->membase+UART_LSR)) // line status
+#define UART_GET_MSR(p) inb(((p)->membase+UART_MSR)) // modem status
+#define UART_GET_MCR(p) inb(((p)->membase+UART_MCR)) // modem control
+#define UART_PUT_MCR(p, c) outb(c,((p)->membase+UART_MCR))
+#define UART_GET_LCR(p) inb(((p)->membase+UART_LCR)) // mode control
+#define UART_PUT_LCR(p, c) outb(c,((p)->membase+UART_LCR))
+#define UART_PUT_FCR(p, c) outb(c,((p)->membase+UART_FCR)) // fifo control
+#define UART_GET_DIV_HI(p) inb(((p)->membase+UART_DLM))
+#define UART_PUT_DIV_HI(p, c) outb(c,((p)->membase+UART_DLM))
+#define UART_GET_DIV_LO(p) inb(((p)->membase+UART_DLL))
+#define UART_PUT_DIV_LO(p, c) outb(c,((p)->membase+UART_DLL))
+#define UART_PUT_MDR(p, c) outb(c,UART_MDR((p)->membase))
+#define UART_RX_DATA(s) ((s) & UART_LSR_DR)
+#define UART_TX_READY(s) ((s) & UART_LSR_THRE)
+
+static void it8712_stop_tx(struct uart_port *port, u_int from_tty)
+{
+ unsigned int reg;
+
+ //printk("it8712 stop tx : \n");
+ reg = UART_GET_IER(port);
+ reg &= ~(UART_IER_THRI);
+ UART_PUT_IER(port, reg);
+}
+
+static void it8712_stop_rx(struct uart_port *port)
+{
+ unsigned int reg;
+
+ //printk("it8712 stop rx : \n");
+ reg = UART_GET_IER(port);
+ reg &= ~(UART_IER_RDI);
+ UART_PUT_IER(port, reg);
+
+}
+
+static void it8712_enable_ms(struct uart_port *port)
+{
+ unsigned int reg;
+
+ //printk("it8712 enable ms : \n");
+
+ reg = UART_GET_IER(port);
+ reg |= (UART_IER_MSI);
+ UART_PUT_IER(port, reg);
+
+}
+
+static void it8712_rx_chars(struct uart_port *port, struct pt_regs *regs)
+{
+ struct tty_struct *tty = port->info->tty;
+ unsigned int status, mask, ch, flg, ignored = 0;
+
+ // printk("it8712_rx_chars : \n");
+ status = UART_GET_LSR(port);
+ while (UART_RX_DATA(status)) {
+
+ /*
+ * We need to read rds before reading the
+ * character from the fifo
+ */
+ ch = UART_GET_CHAR(port);
+ port->icount.rx++;
+
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ goto ignore_char;
+
+ flg = TTY_NORMAL;
+
+ /*
+ * Note that the error handling code is
+ * out of the main execution path
+ */
+
+ if (status & (UART_LSR_OE|UART_LSR_PE|UART_LSR_FE|UART_LSR_BI|UART_LSR_DE))
+ goto handle_error;
+ if (uart_handle_sysrq_char(port, ch, regs))
+ goto ignore_char;
+
+ error_return:
+ *tty->flip.flag_buf_ptr++ = flg;
+ *tty->flip.char_buf_ptr++ = ch;
+ tty->flip.count++;
+ ignore_char:
+ status = UART_GET_LSR(port);
+ } // end of while
+out:
+ tty_flip_buffer_push(tty);
+ return;
+
+handle_error:
+ if (status & UART_LSR_BI) {
+ status &= ~(UART_LSR_FE);
+ port->icount.brk++;
+
+#ifdef SUPPORT_SYSRQ
+ if (uart_handle_break(port))
+ goto ignore_char;
+#endif
+ } else if (status & UART_LSR_PE)
+ port->icount.parity++;
+ else if (status & UART_LSR_FE)
+ port->icount.frame++;
+
+ if (status & UART_LSR_OE)
+ port->icount.overrun++;
+
+ if (status & port->ignore_status_mask) {
+ if (++ignored > 100)
+ goto out;
+ goto ignore_char;
+ }
+
+ mask = status & port->read_status_mask;
+
+ if (mask & UART_LSR_BI)
+ flg = TTY_BREAK;
+ else if (mask & UART_LSR_PE)
+ flg = TTY_PARITY;
+ else if (mask & UART_LSR_FE)
+ flg = TTY_FRAME;
+
+ if (status & UART_LSR_OE) {
+ /*
+ * CHECK: does overrun affect the current character?
+ * ASSUMPTION: it does not.
+ */
+ *tty->flip.flag_buf_ptr++ = flg;
+ *tty->flip.char_buf_ptr++ = ch;
+ tty->flip.count++;
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ goto ignore_char;
+ ch = 0;
+ flg = TTY_OVERRUN;
+ }
+#ifdef SUPPORT_SYSRQ
+ port->sysrq = 0;
+#endif
+ goto error_return;
+}
+
+static void it8712_tx_chars(struct uart_port *port)
+{
+ struct circ_buf *xmit = &port->info->xmit;
+ int count;
+
+ if (port->x_char) {
+ while(!(UART_GET_LSR(port)&UART_LSR_THRE));
+ UART_PUT_CHAR(port, port->x_char);
+ port->icount.tx++;
+ port->x_char = 0;
+
+ return;
+ }
+ if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
+ it8712_stop_tx(port, 0);
+ return;
+ }
+
+ count = port->fifosize >> 1;
+ do {
+ while(!(UART_GET_LSR(port)&UART_LSR_THRE));
+ UART_PUT_CHAR(port, xmit->buf[xmit->tail]);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ port->icount.tx++;
+ if (uart_circ_empty(xmit))
+ break;
+ } while (--count > 0);
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_write_wakeup(port);
+
+ if (uart_circ_empty(xmit))
+ it8712_stop_tx(port, 0);
+}
+
+static void it8712_start_tx(struct uart_port *port, unsigned int tty_start)
+{
+ unsigned int reg;
+
+ //printk("it8712 start tx : \n");
+ reg = UART_GET_IER(port);
+ reg |= (UART_IER_THRI);
+ UART_PUT_IER(port, reg);
+ it8712_tx_chars(port);
+}
+
+static void it8712_modem_status(struct uart_port *port)
+{
+ unsigned int status;
+
+// printk("it8712 modem status : \n");
+
+ status = UART_GET_MSR(port);
+
+ if (!(status & (UART_MSR_DCTS | UART_MSR_DDSR |
+ UART_MSR_TERI | UART_MSR_DDCD)))
+ return;
+
+ if (status & UART_MSR_DDCD)
+ uart_handle_dcd_change(port, status & UART_MSR_DCD);
+
+ if (status & UART_MSR_DDSR)
+ port->icount.dsr++;
+
+ if (status & UART_MSR_DCTS)
+ uart_handle_cts_change(port, status & UART_MSR_CTS);
+
+ wake_up_interruptible(&port->info->delta_msr_wait);
+
+}
+
+static irqreturn_t it8712_int(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct uart_port *port = dev_id;
+ unsigned int status, pass_counter = 0, data;
+
+
+ data = LPC_SERIAL_IRQ_STATUS;
+ if((data&0x10)==0x10)
+ {
+ status = UART_GET_INT_STATUS(port);
+ do {
+// printk("it8712_int: status %x \n", status);
+ switch(status)
+ {
+ case UART_IIR_RDI:
+ case UART_IIR_RLSI:
+ case UART_IIR_RCTO:
+ it8712_rx_chars(port, regs);
+ break;
+ case UART_IIR_THRI:
+ it8712_tx_chars(port);
+ break;
+ case UART_IIR_MSI:
+ it8712_modem_status(port);
+ break;
+ default:
+ break;
+ }
+ if (pass_counter++ > IT8712_ISR_PASS_LIMIT)
+ break;
+
+ status = UART_GET_INT_STATUS(port);
+ } while (status);
+ }
+
+ status = 0;
+ status |= (IRQ_LPC_MASK);
+ *((volatile unsigned int *)IRQ_CLEAR(IO_ADDRESS(SL2312_INTERRUPT_BASE))) = status;
+
+ //cnt=0;
+ //do{
+ // data = LPC_SERIAL_IRQ_STATUS;
+ LPC_SERIAL_IRQ_STATUS = data;
+ // cnt++;
+ //}while(data);
+ //if(cnt>2)
+ // printf("it8712_uart_Isr clear LPC_SERIAL_IRQ_STATUS %x \n", cnt);
+ return IRQ_HANDLED;
+}
+
+static u_int it8712_tx_empty(struct uart_port *port)
+{
+// printk("it8712 tx empty : \n");
+
+ return ((UART_GET_LSR(port) & UART_LSR_THRE)? TIOCSER_TEMT : 0);
+}
+
+static u_int it8712_get_mctrl(struct uart_port *port)
+{
+ unsigned int result = 0;
+ unsigned int status;
+
+// printk("it8712 get mctrl : \n");
+
+ status = UART_GET_MSR(port);
+ if (status & UART_MSR_DCD)
+ result |= TIOCM_CAR;
+ if (status & UART_MSR_DSR)
+ result |= TIOCM_DSR;
+ if (status & UART_MSR_CTS)
+ result |= TIOCM_CTS;
+ if (status & UART_MSR_RI)
+ result |= TIOCM_RI;
+
+ return result;
+}
+
+static void it8712_set_mctrl_null(struct uart_port *port, u_int mctrl)
+{
+}
+
+static void it8712_break_ctl(struct uart_port *port, int break_state)
+{
+ unsigned int lcr;
+
+// printk("it8712 break ctl : \n");
+
+ lcr = UART_GET_LCR(port);
+ if (break_state == -1)
+ lcr |= UART_LCR_SBC;
+ else
+ lcr &= ~UART_LCR_SBC;
+ UART_PUT_LCR(port, lcr);
+}
+
+static inline u_int uart_calculate_quot(struct uart_port *port, u_int baud)
+{
+ u_int quot;
+
+ /* Special case: B0 rate */
+ if (!baud)
+ baud = 9600;
+
+ quot = (port->uartclk/(16 * baud)) ;
+
+ return quot;
+}
+static void it8712_set_termios(struct uart_port *port, struct termios *termios,
+ struct termios *old)
+{
+ unsigned int uart_mc, old_ier, baud, quot;
+ unsigned long flags;
+
+ termios->c_cflag |= CREAD;
+ termios->c_cflag |= CLOCAL;
+#ifdef DEBUG
+ printk("it8712_set_cflag(0x%x) called\n", cflag);
+#endif
+ baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
+ quot = uart_get_divisor(port, baud);
+
+ /* byte size and parity */
+ switch (termios->c_cflag & CSIZE) {
+ case CS5:
+ uart_mc = UART_LCR_WLEN5;
+ break;
+ case CS6:
+ uart_mc = UART_LCR_WLEN6;
+ break;
+ case CS7:
+ uart_mc = UART_LCR_WLEN7;
+ break;
+ default: // CS8
+ uart_mc = UART_LCR_WLEN8;
+ break;
+ }
+
+ if (termios->c_cflag & CSTOPB)
+ uart_mc|= UART_LCR_STOP;
+ if (termios->c_cflag & PARENB) {
+ uart_mc |= UART_LCR_EVEN;
+ if (!(termios->c_cflag & PARODD))
+ uart_mc |= UART_LCR_ODD;
+ }
+
+ spin_lock_irqsave(&port->lock, flags);
+ /*
+ * Update the per-port timeout
+ */
+ uart_update_timeout(port, termios->c_cflag, baud);
+ port->read_status_mask = UART_LSR_OE;
+ if (termios->c_iflag & INPCK)
+ port->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
+ if (termios->c_iflag & (BRKINT | PARMRK))
+ port->read_status_mask |= UART_LSR_BI;
+
+ /*
+ * Characters to ignore
+ */
+ port->ignore_status_mask = 0;
+ if (termios->c_iflag & IGNPAR)
+ port->ignore_status_mask |= UART_LSR_FE | UART_LSR_PE;
+ if (termios->c_iflag & IGNBRK) {
+ port->ignore_status_mask |= UART_LSR_BI;
+ /*
+ * If we're ignoring parity and break indicators,
+ * ignore overruns to (for real raw support).
+ */
+ if (termios->c_iflag & IGNPAR)
+ port->ignore_status_mask |= UART_LSR_OE;
+ }
+
+ old_ier = UART_GET_IER(port);
+
+ if(UART_ENABLE_MS(port, termios->c_cflag))
+ old_ier |= UART_IER_MSI;
+
+ /* Set baud rate */
+ quot = quot / 13;
+ UART_PUT_LCR(port, UART_LCR_DLAB);
+ UART_PUT_DIV_LO(port, (quot & 0xff));
+ UART_PUT_DIV_HI(port, ((quot & 0xf00) >> 8));
+
+ UART_PUT_LCR(port, uart_mc);
+// UART_PUT_LCR(port, 0x07); // ???? it is wired
+ UART_PUT_MCR(port, 0x08);
+ UART_PUT_FCR(port, 0x01);
+ UART_PUT_IER(port, 0x07);
+
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static int it8712_startup(struct uart_port *port)
+{
+ int retval, i;
+ unsigned int regs;
+
+ //printk("it8712 startup : \n");
+
+ /*
+ * Use iobase to store a pointer to info. We need this to start a
+ * transmission as the tranmittr interrupt is only generated on
+ * the transition to the idle state
+ */
+
+ // regs = 0;
+ // regs |= (IRQ_LPC_MASK);
+ // *((volatile unsigned int *)IRQ_CLEAR(IO_ADDRESS(SL2312_INTERRUPT_BASE))) = regs;
+
+ /*
+ * Allocate the IRQ
+ */
+ retval = request_irq(port->irq, it8712_int, SA_INTERRUPT, "it8712", port);
+ if (retval)
+ return retval;
+
+ //printk("Init LPC int...........\n");
+ /* setup interrupt controller */
+ regs = *((volatile unsigned int *)IRQ_TMODE(IO_ADDRESS(SL2312_INTERRUPT_BASE)));
+ regs &= ~(IRQ_LPC_MASK);
+ *((volatile unsigned int *)IRQ_TMODE(IO_ADDRESS(SL2312_INTERRUPT_BASE))) = regs;
+ regs = *((volatile unsigned int *)IRQ_TLEVEL(IO_ADDRESS(SL2312_INTERRUPT_BASE)));
+ regs &= ~(IRQ_LPC_MASK);
+ *((volatile unsigned int *)IRQ_TLEVEL(IO_ADDRESS(SL2312_INTERRUPT_BASE))) = regs;
+ *((volatile unsigned int *)IRQ_MASK(IO_ADDRESS(SL2312_INTERRUPT_BASE))) |= (unsigned int)(IRQ_LPC_MASK);
+
+ LPC_SERIAL_IRQ_POLARITY = 0x10; //0x10; //0x02;
+ LPC_SERIAL_IRQ_TRITYPE = 0x10; //0x10;//
+ LPC_SERIAL_IRQ_ENABLE = 0x10;
+
+ LPC_BUS_CTRL = 0xc0;
+ LPC_SERIAL_IRQ_CTRL = 0xc0;
+ for(i=0;i<1000;i++) ;
+ LPC_SERIAL_IRQ_CTRL = 0x80;
+ /*
+ * Finally, enable interrupts. Use the TII interrupt to minimise
+ * the number of interrupts generated. If higher performance is
+ * needed, consider using the TI interrupt with a suitable FIFO
+ * threshold
+ */
+ //UART_PUT_IER(port, (UART_IER_RDI|UART_IER_THRI));
+ UART_PUT_IER(port, (UART_IER_RDI|UART_IER_THRI|UART_IER_RLSI));//middle
+
+ return 0;
+}
+
+static void it8712_shutdown(struct uart_port *port)
+{
+ //printk("it8712 shutdown : \n");
+
+ /*
+ * disable all interrupts, disable the port
+ */
+ UART_PUT_IER(port, 0x0);
+
+ /* disable break condition and fifos */
+// UART_PUT_MCR(port, (UART_GET_MCR(port)&UART_MCR_MASK));
+
+ /*
+ * Free the interrupt
+ */
+ free_irq(port->irq, port);
+}
+
+static const char *it8712_type(struct uart_port *port)
+{
+ return port->type == PORT_IT8712 ? "IT8712" : NULL;
+}
+
+/*
+ * Release the memory region(s) being used by 'port'
+ */
+static void it8712_release_port(struct uart_port *port)
+{
+// printk("it8712 release port : \n");
+
+ release_mem_region(port->mapbase, UART_PORT_SIZE);
+}
+
+/*
+ * Request the memory region(s) being used by 'port'
+ */
+static int it8712_request_port(struct uart_port *port)
+{
+ return request_mem_region(port->mapbase, UART_PORT_SIZE,
+ "serial_it8712") != NULL ? 0 : -EBUSY;
+}
+
+/*
+ * Configure/autoconfigure the port.
+ */
+static void it8712_config_port(struct uart_port *port, int flags)
+{
+
+ if (flags & UART_CONFIG_TYPE) {
+ if (it8712_request_port(port) == 0)
+ port->type = PORT_IT8712;
+ }
+}
+
+/*
+ * verify the new serial_struct (for TIOCSSERIAL).
+ */
+static int it8712_verify_port(struct uart_port *port, struct serial_struct *ser)
+{
+ int ret = 0;
+
+ if (ser->type != PORT_UNKNOWN && ser->type != PORT_UART00)
+ 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 it8712_pops = {
+ .tx_empty = it8712_tx_empty,
+ .set_mctrl = it8712_set_mctrl_null,
+ .get_mctrl = it8712_get_mctrl,
+ .stop_tx = it8712_stop_tx,
+ .start_tx = it8712_start_tx,
+ .stop_rx = it8712_stop_rx,
+ .enable_ms = it8712_enable_ms,
+ .break_ctl = it8712_break_ctl,
+ .startup = it8712_startup,
+ .shutdown = it8712_shutdown,
+ .set_termios = it8712_set_termios,
+ .type = it8712_type,
+ .release_port = it8712_release_port,
+ .request_port = it8712_request_port,
+ .config_port = it8712_config_port,
+ .verify_port = it8712_verify_port,
+};
+
+#ifdef CONFIG_ARCH_SL2312
+
+static struct uart_port it8712_ports[UART_NR] = {
+ {
+ membase: (void *)0,
+ mapbase: 0,
+ iotype: SERIAL_IO_MEM,
+ irq: 0,
+ uartclk: UART_CLK/2,
+ fifosize: 16,
+ ops: &it8712_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+ }
+};
+
+#endif
+
+#ifdef CONFIG_SERIAL_IT8712_CONSOLE
+#ifdef used_and_not_const_char_pointer
+static int it8712_console_read(struct uart_port *port, char *s, u_int count)
+{
+ unsigned int status;
+ int c;
+#ifdef DEBUG
+ printk("it8712_console_read() called\n");
+#endif
+
+ c = 0;
+ while (c < count) {
+ status = UART_GET_LSR(port);
+ if (UART_RX_DATA(status)) {
+ *s++ = UART_GET_CHAR(port);
+ c++;
+ } else {
+ // nothing more to get, return
+ return c;
+ }
+ }
+ // return the count
+ return c;
+}
+#endif
+static void it8712_console_write(struct console *co, const char *s, unsigned count)
+{
+#ifdef CONFIG_ARCH_SL2312
+ struct uart_port *port = it8712_ports + co->index;
+ unsigned int status, old_ies;
+ int i;
+
+ /*
+ * First save the CR then disable the interrupts
+ */
+ old_ies = UART_GET_IER(port);
+ //if(old_ies!=7)
+ //{
+ //
+ // printk("old_ies = %x\n",old_ies);
+ // old_ies = 7;
+ //}
+ UART_PUT_IER(port,0x0);
+
+ /*
+ * Now, do each character
+ */
+ for (i = 0; i < count; i++) {
+ do {
+ status = UART_GET_LSR(port);
+ } while (!UART_TX_READY(status));
+ UART_PUT_CHAR(port, s[i]);
+ if (s[i] == '\n') {
+ do {
+ status = UART_GET_LSR(port);
+ } while (!UART_TX_READY(status));
+ UART_PUT_CHAR(port, '\r');
+ }
+ }
+
+ /*
+ * Finally, wait for transmitter to become empty
+ * and restore the IES
+ */
+ do {
+ status = UART_GET_LSR(port);
+ } while (!(status&UART_LSR_THRE));
+ UART_PUT_IER(port, old_ies);
+#endif
+}
+
+static void /*__init*/ it8712_console_get_options(struct uart_port *port, int *baud, int *parity, int *bits)
+{
+ //printk("it8712 console get options : \n");
+
+ u_int uart_mc, quot;
+ uart_mc= UART_GET_MCR(port);
+
+ *parity = 'n';
+ if (uart_mc & UART_LCR_PARITY) {
+ if (uart_mc & UART_LCR_EVEN)
+ *parity = 'e';
+ else
+ *parity = 'o';
+ }
+
+ switch (uart_mc & UART_LCR_MSK){
+
+ case UART_LCR_WLEN5:
+ *bits = 5;
+ break;
+ case UART_LCR_WLEN6:
+ *bits = 6;
+ break;
+ case UART_LCR_WLEN7:
+ *bits = 7;
+ break;
+ case UART_LCR_WLEN8:
+ *bits = 8;
+ break;
+ }
+ UART_PUT_MCR(port,UART_LCR_DLAB);
+ quot = UART_GET_DIV_LO(port) | (UART_GET_DIV_HI(port) << 8);
+ UART_PUT_MCR(port,uart_mc);
+ *baud = (port->uartclk / (16 *quot));
+}
+
+static int __init it8712_console_setup(struct console *co, char *options)
+{
+ struct uart_port *port;
+ int baud = 38400;
+ int bits = 8;
+ int parity = 'n';
+ int flow= 'n';
+ int base;//, irq;
+ int i ;
+
+ printk("it8712 console setup : \n");
+
+ LPCSetConfig(0, 0x02, 0x01);
+ LPCSetConfig(LDN_SERIAL1, 0x30, 0x1);
+ LPCSetConfig(LDN_SERIAL1, 0x23, 0x0);
+ base = IT8712_IO_BASE;
+ base += ((LPCGetConfig(LDN_SERIAL1, 0x60) << 8) + LPCGetConfig(LDN_SERIAL1, 0x61));
+ it8712_ports[0].mapbase = base;
+ it8712_ports[0].membase = (void *)IO_ADDRESS(base);
+ it8712_ports[0].irq = IRQ_LPC_OFFSET;
+ // irq = LPCGetConfig(LDN_SERIAL1, 0x70);
+ //it8712_ports[0].irq += irq;
+
+ //printk("it8712 irq is %x \n", it8712_ports[0].irq);
+
+ // setup LPC Host 'quiet mode'
+ //*((volatile unsigned int *)IO_ADDRESS((SL2312_LPC_HOST_BASE+0x04))) |= LPC_HOST_CONTINUE_MODE ;
+ //for(i=0;i<1000;i++) ; // delay
+ //*((volatile unsigned int *)IO_ADDRESS((SL2312_LPC_HOST_BASE+0x04))) &= ~(LPC_HOST_CONTINUE_MODE) ;
+ LPC_BUS_CTRL = 0xc0;
+ LPC_SERIAL_IRQ_CTRL = 0xc0;
+ for(i=0;i<1000;i++) ;
+ LPC_SERIAL_IRQ_CTRL = 0x80;
+
+#ifdef CONFIG_ARCH_SL2312
+ /*
+ * Check whether an invalid uart number has been specified, and
+ * if so, search for the first available port that does have
+ * console support.
+ */
+ port = uart_get_console(it8712_ports,IT8712_NO_PORTS,co);
+#else
+ return -ENODEV;
+#endif
+
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ else
+ it8712_console_get_options(port, &baud, &parity, &bits);
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+extern struct uart_driver it8712_reg;
+static struct console it8712_console = {
+ .name = SERIAL_IT8712_NAME,
+ .write = it8712_console_write,
+ .device = uart_console_device,
+ .setup = it8712_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = 0,
+ .data = &it8712_reg,
+};
+
+static int __init it8712_console_init(void)
+{
+ register_console(&it8712_console);
+ return 0;
+}
+
+console_initcall(it8712_console_init);
+
+#define IT8712_CONSOLE &it8712_console
+#else
+#define IT8712_CONSOLE NULL
+#endif
+
+static struct uart_driver it8712_reg = {
+ .owner = NULL,
+ .driver_name = SERIAL_IT8712_NAME,
+ .dev_name = SERIAL_IT8712_NAME,
+ .major = SERIAL_IT8712_MAJOR,
+ .minor = SERIAL_IT8712_MINOR,
+ .nr = UART_NR,
+ .cons = IT8712_CONSOLE,
+};
+
+static int __init it8712_init(void)
+{
+ int result;
+ //printk("serial_it8712: it871212_init \n");
+
+
+ result = uart_register_driver(&it8712_reg);
+ if(result)
+ return result;
+ result = uart_add_one_port(&it8712_reg, &it8712_ports[0]);
+
+ return result;
+
+}
+
+
+__initcall(it8712_init);
Index: linux-2.6.23.16/drivers/serial/it8712.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.23.16/drivers/serial/it8712.h 2008-03-15 17:59:53.568330991 +0200
@@ -0,0 +1,135 @@
+#define UART_RX 0 /* In: Receive buffer (DLAB=0) */
+#define UART_TX 0 /* Out: Transmit buffer (DLAB=0) */
+#define UART_DLL 0 /* Out: Divisor Latch Low (DLAB=1) */
+#define UART_TRG 0 /* (LCR=BF) FCTR bit 7 selects Rx or Tx
+ * In: Fifo count
+ * Out: Fifo custom trigger levels
+ * XR16C85x only */
+
+#define UART_DLM 1 /* Out: Divisor Latch High (DLAB=1) */
+#define UART_IER 1 /* Out: Interrupt Enable Register */
+#define UART_FCTR 1 /* (LCR=BF) Feature Control Register
+ * XR16C85x only */
+
+#define UART_IIR 2 /* In: Interrupt ID Register */
+#define UART_FCR 2 /* Out: FIFO Control Register */
+#define UART_EFR 2 /* I/O: Extended Features Register */
+ /* (DLAB=1, 16C660 only) */
+
+#define UART_LCR 3 /* Out: Line Control Register */
+#define UART_MCR 4 /* Out: Modem Control Register */
+#define UART_LSR 5 /* In: Line Status Register */
+#define UART_MSR 6 /* In: Modem Status Register */
+#define UART_SCR 7 /* I/O: Scratch Register */
+#define UART_EMSR 7 /* (LCR=BF) Extended Mode Select Register
+ * FCTR bit 6 selects SCR or EMSR
+ * XR16c85x only */
+
+/*
+ * These are the definitions for the FIFO Control Register
+ * (16650 only)
+ */
+#define UART_FCR_ENABLE_FIFO 0x01 /* Enable the FIFO */
+#define UART_FCR_CLEAR_RCVR 0x02 /* Clear the RCVR FIFO */
+#define UART_FCR_CLEAR_XMIT 0x04 /* Clear the XMIT FIFO */
+#define UART_FCR_DMA_SELECT 0x08 /* For DMA applications */
+#define UART_FCR_TRIGGER_MASK 0xC0 /* Mask for the FIFO trigger range */
+#define UART_FCR_TRIGGER_1 0x00 /* Mask for trigger set at 1 */
+#define UART_FCR_TRIGGER_4 0x40 /* Mask for trigger set at 4 */
+#define UART_FCR_TRIGGER_8 0x80 /* Mask for trigger set at 8 */
+#define UART_FCR_TRIGGER_14 0xC0 /* Mask for trigger set at 14 */
+/* 16650 redefinitions */
+#define UART_FCR6_R_TRIGGER_8 0x00 /* Mask for receive trigger set at 1 */
+#define UART_FCR6_R_TRIGGER_16 0x40 /* Mask for receive trigger set at 4 */
+#define UART_FCR6_R_TRIGGER_24 0x80 /* Mask for receive trigger set at 8 */
+#define UART_FCR6_R_TRIGGER_28 0xC0 /* Mask for receive trigger set at 14 */
+#define UART_FCR6_T_TRIGGER_16 0x00 /* Mask for transmit trigger set at 16 */
+#define UART_FCR6_T_TRIGGER_8 0x10 /* Mask for transmit trigger set at 8 */
+#define UART_FCR6_T_TRIGGER_24 0x20 /* Mask for transmit trigger set at 24 */
+#define UART_FCR6_T_TRIGGER_30 0x30 /* Mask for transmit trigger set at 30 */
+/* TI 16750 definitions */
+#define UART_FCR7_64BYTE 0x20 /* Go into 64 byte mode */
+
+/*
+ * These are the definitions for the Line Control Register
+ *
+ * Note: if the word length is 5 bits (UART_LCR_WLEN5), then setting
+ * UART_LCR_STOP will select 1.5 stop bits, not 2 stop bits.
+ */
+#define UART_LCR_DLAB 0x80 /* Divisor latch access bit */
+#define UART_LCR_SBC 0x40 /* Set break control */
+#define UART_LCR_SPAR 0x20 /* Stick parity (?) */
+#define UART_LCR_EPAR 0x10 /* Even parity select */
+#define UART_LCR_PARITY 0x08 /* Parity Enable */
+#define UART_LCR_STOP 0x04 /* Stop bits: 0=1 stop bit, 1= 2 stop bits */
+#define UART_LCR_WLEN5 0x00 /* Wordlength: 5 bits */
+#define UART_LCR_WLEN6 0x01 /* Wordlength: 6 bits */
+#define UART_LCR_WLEN7 0x02 /* Wordlength: 7 bits */
+#define UART_LCR_WLEN8 0x03 /* Wordlength: 8 bits */
+#define UART_LCR_EVEN 0x18 /* Even parity */
+#define UART_LCR_ODD 0x08 /* Odd parity */
+#define UART_LCR_MSK 0x03
+/*
+ * These are the definitions for the Line Status Register
+ */
+#define UART_LSR_DE 0x80 /* FIFO Data Error */
+#define UART_LSR_TEMT 0x40 /* Transmitter empty */
+#define UART_LSR_THRE 0x20 /* Transmit-hold-register empty */
+#define UART_LSR_BI 0x10 /* Break interrupt indicator */
+#define UART_LSR_FE 0x08 /* Frame error indicator */
+#define UART_LSR_PE 0x04 /* Parity error indicator */
+#define UART_LSR_OE 0x02 /* Overrun error indicator */
+#define UART_LSR_DR 0x01 /* Receiver data ready */
+
+/*
+ * These are the definitions for the Interrupt Identification Register
+ */
+#define UART_IIR_NO_INT 0x01 /* No interrupts pending */
+#define UART_IIR_ID 0x06 /* Mask for the interrupt ID */
+
+#define UART_IIR_MSI 0x00 /* Modem status interrupt */
+#define UART_IIR_THRI 0x02 /* Transmitter holding register empty */
+#define UART_IIR_RDI 0x04 /* Receiver data interrupt */
+#define UART_IIR_RLSI 0x06 /* Receiver line status interrupt */
+#define UART_IIR_RCTO 0x0c /* Receiver character timeout interrupt */
+/*
+ * These are the definitions for the Interrupt Enable Register
+ */
+#define UART_IER_MSI 0x08 /* Enable Modem status interrupt */
+#define UART_IER_RLSI 0x04 /* Enable receiver line status interrupt */
+#define UART_IER_THRI 0x02 /* Enable Transmitter holding register int. */
+#define UART_IER_RDI 0x01 /* Enable receiver data interrupt */
+/*
+ * Sleep mode for ST16650 and TI16750.
+ * Note that for 16650, EFR-bit 4 must be selected as well.
+ */
+#define UART_IERX_SLEEP 0x10 /* Enable sleep mode */
+
+/*
+ * These are the definitions for the Modem Control Register
+ */
+#define UART_MCR_LOOP 0x10 /* Enable loopback test mode */
+#define UART_MCR_OUT2 0x08 /* Out2 complement */
+#define UART_MCR_OUT1 0x04 /* Out1 complement */
+#define UART_MCR_RTS 0x02 /* RTS complement */
+#define UART_MCR_DTR 0x01 /* DTR complement */
+
+/*
+ * These are the definitions for the Modem Status Register
+ */
+#define UART_MSR_DCD 0x80 /* Data Carrier Detect */
+#define UART_MSR_RI 0x40 /* Ring Indicator */
+#define UART_MSR_DSR 0x20 /* Data Set Ready */
+#define UART_MSR_CTS 0x10 /* Clear to Send */
+#define UART_MSR_DDCD 0x08 /* Delta DCD */
+#define UART_MSR_TERI 0x04 /* Trailing edge ring indicator */
+#define UART_MSR_DDSR 0x02 /* Delta DSR */
+#define UART_MSR_DCTS 0x01 /* Delta CTS */
+#define UART_MSR_ANY_DELTA 0x0F /* Any of the delta bits! */
+
+#define UART_PARITY_NONE 0x00
+#define UART_PARITY_ODD 0x01
+#define UART_PARITY_EVEN 0x02
+
+
+
Index: linux-2.6.23.16/drivers/serial/serial_it8712.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.23.16/drivers/serial/serial_it8712.c 2008-03-15 17:59:53.568330991 +0200
@@ -0,0 +1,876 @@
+/*
+ * linux/drivers/char/serial_uart00.c
+ *
+ * Driver for UART00 serial ports
+ *
+ * Based on drivers/char/serial_amba.c, by ARM Limited &
+ * Deep Blue Solutions Ltd.
+ * Copyright 2001 Altera Corporation
+ *
+ * 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
+ *
+ * $Id: serial_it8712.c,v 1.1.1.1 2006/04/03 08:41:00 amos_lee Exp $
+ *
+ */
+#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/console.h>
+#include <linux/sysrq.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <asm/sizes.h>
+
+#if defined(CONFIG_SERIAL_IT8712_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
+#include <linux/serial_core.h>
+#include <asm/arch/sl2312.h>
+#include <asm/arch/int_ctrl.h>
+#include <asm/arch/it8712.h>
+#include "serial_it8712.h"
+
+//#define DEBUG 1
+#define UART_NR 1
+
+#define SERIAL_IT8712_NAME "ttySI"
+#define SERIAL_IT8712_MAJOR 204
+#define SERIAL_IT8712_MINOR 41 /* Temporary - will change in future */
+#define SERIAL_IT8712_NR UART_NR
+#define UART_PORT_SIZE 0x50
+
+#define CALLOUT_IT8712_NAME "cuaslI"
+#define CALLOUT_IT8712_MAJOR 205
+#define CALLOUT_IT8712_MINOR 41 /* Temporary - will change in future */
+#define CALLOUT_IT8712_NR UART_NR
+#define LPC_HOST_CONTINUE_MODE 0x00000040
+
+#define IT8712_NO_PORTS UART_NR
+
+static struct tty_driver normal, callout;
+static struct tty_struct *it8712_table[UART_NR];
+static struct termios *it8712_termios[UART_NR], *it8712_termios_locked[UART_NR];
+static struct console it8712_console;
+
+#define IT8712_ISR_PASS_LIMIT 256
+
+/*
+ * Access macros for the SL2312 UARTs
+ */
+#define UART_GET_INT_STATUS(p) (inb(((p)->membase+UART_IIR)) & 0x0F) // interrupt identification
+#define UART_PUT_IER(p, c) outb(c,((p)->membase+UART_IER)) // interrupt enable
+#define UART_GET_IER(p) inb(((p)->membase+UART_IER))
+#define UART_PUT_CHAR(p, c) outb(c,((p)->membase+UART_TX)) // transmitter holding
+#define UART_GET_CHAR(p) inb(((p)->membase+UART_RX)) // receive buffer
+#define UART_GET_LSR(p) inb(((p)->membase+UART_LSR)) // line status
+#define UART_GET_MSR(p) inb(((p)->membase+UART_MSR)) // modem status
+#define UART_GET_MCR(p) inb(((p)->membase+UART_MCR)) // modem control
+#define UART_PUT_MCR(p, c) outb(c,((p)->membase+UART_MCR))
+#define UART_GET_LCR(p) inb(((p)->membase+UART_LCR)) // mode control
+#define UART_PUT_LCR(p, c) outb(c,((p)->membase+UART_LCR))
+#define UART_PUT_FCR(p, c) outb(c,((p)->membase+UART_FCR)) // fifo control
+#define UART_GET_DIV_HI(p) inb(((p)->membase+UART_DLM))
+#define UART_PUT_DIV_HI(p, c) outb(c,((p)->membase+UART_DLM))
+#define UART_GET_DIV_LO(p) inb(((p)->membase+UART_DLL))
+#define UART_PUT_DIV_LO(p, c) outb(c,((p)->membase+UART_DLL))
+#define UART_PUT_MDR(p, c) outb(c,UART_MDR((p)->membase))
+#define UART_RX_DATA(s) ((s) & UART_LSR_DR)
+#define UART_TX_READY(s) ((s) & UART_LSR_THRE)
+
+static void it8712_stop_tx(struct uart_port *port, u_int from_tty)
+{
+ unsigned int reg;
+
+// printk("it8712 stop tx : \n");
+ reg = UART_GET_IER(port);
+ reg &= ~(UART_IER_THRI);
+ UART_PUT_IER(port, reg);
+}
+
+static void it8712_stop_rx(struct uart_port *port)
+{
+ unsigned int reg;
+
+// printk("it8712 stop rx : \n");
+ reg = UART_GET_IER(port);
+ reg &= ~(UART_IER_RDI);
+ UART_PUT_IER(port, reg);
+
+}
+
+static void it8712_enable_ms(struct uart_port *port)
+{
+ unsigned int reg;
+
+// printk("it8712 enable ms : \n");
+
+ reg = UART_GET_IER(port);
+ reg |= (UART_IER_MSI);
+ UART_PUT_IER(port, reg);
+
+}
+
+static void
+it8712_rx_chars(struct uart_info *info, struct pt_regs *regs)
+{
+ struct tty_struct *tty = info->tty;
+ unsigned int status, mask, ch, flg, ignored = 0;
+ struct uart_port *port = info->port;
+
+ // printk("it8712_rx_chars : \n");
+ status = UART_GET_LSR(port);
+ while (UART_RX_DATA(status)) {
+
+ /*
+ * We need to read rds before reading the
+ * character from the fifo
+ */
+ ch = UART_GET_CHAR(port);
+ port->icount.rx++;
+
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ goto ignore_char;
+
+ flg = TTY_NORMAL;
+
+ /*
+ * Note that the error handling code is
+ * out of the main execution path
+ */
+
+ if (status & (UART_LSR_OE|UART_LSR_PE|UART_LSR_FE|UART_LSR_BI|UART_LSR_DE))
+ goto handle_error;
+ if (uart_handle_sysrq_char(info, ch, regs))
+ goto ignore_char;
+
+ error_return:
+ *tty->flip.flag_buf_ptr++ = flg;
+ *tty->flip.char_buf_ptr++ = ch;
+ tty->flip.count++;
+ ignore_char:
+ status = UART_GET_LSR(port);
+ } // end of while
+out:
+ tty_flip_buffer_push(tty);
+ return;
+
+handle_error:
+ if (status & UART_LSR_BI) {
+ status &= ~(UART_LSR_FE);
+ port->icount.brk++;
+
+#ifdef SUPPORT_SYSRQ
+ if (uart_handle_break(info, &it8712_console))
+ goto ignore_char;
+#endif
+ } else if (status & UART_LSR_PE)
+ port->icount.parity++;
+ else if (status & UART_LSR_FE)
+ port->icount.frame++;
+
+ if (status & UART_LSR_OE)
+ port->icount.overrun++;
+
+ if (status & port->ignore_status_mask) {
+ if (++ignored > 100)
+ goto out;
+ goto ignore_char;
+ }
+
+ mask = status & port->read_status_mask;
+
+ if (mask & UART_LSR_BI)
+ flg = TTY_BREAK;
+ else if (mask & UART_LSR_PE)
+ flg = TTY_PARITY;
+ else if (mask & UART_LSR_FE)
+ flg = TTY_FRAME;
+
+ if (status & UART_LSR_OE) {
+ /*
+ * CHECK: does overrun affect the current character?
+ * ASSUMPTION: it does not.
+ */
+ *tty->flip.flag_buf_ptr++ = flg;
+ *tty->flip.char_buf_ptr++ = ch;
+ tty->flip.count++;
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ goto ignore_char;
+ ch = 0;
+ flg = TTY_OVERRUN;
+ }
+#ifdef SUPPORT_SYSRQ
+ info->sysrq = 0;
+#endif
+ goto error_return;
+}
+
+static void it8712_tx_chars(struct uart_info *info)
+{
+ int count;
+ struct uart_port *port=info->port;
+
+ if (port->x_char) {
+ while(!(UART_GET_LSR(port)&UART_LSR_THRE));
+ UART_PUT_CHAR(port, port->x_char);
+ port->icount.tx++;
+ port->x_char = 0;
+
+ return;
+ }
+ if (info->xmit.head == info->xmit.tail
+ || info->tty->stopped
+ || info->tty->hw_stopped) {
+ it8712_stop_tx(info->port, 0);
+ return;
+ }
+
+ count = port->fifosize >> 1;
+ do {
+ while(!(UART_GET_LSR(port)&UART_LSR_THRE));
+ UART_PUT_CHAR(port, info->xmit.buf[info->xmit.tail]);
+ info->xmit.tail = (info->xmit.tail + 1) & (UART_XMIT_SIZE - 1);
+ port->icount.tx++;
+ if (info->xmit.head == info->xmit.tail)
+ break;
+ } while (--count > 0);
+
+ if (CIRC_CNT(info->xmit.head,
+ info->xmit.tail,
+ UART_XMIT_SIZE) < WAKEUP_CHARS)
+ uart_event(info, EVT_WRITE_WAKEUP);
+
+ if (info->xmit.head == info->xmit.tail)
+ it8712_stop_tx(info->port, 0);
+}
+
+static void it8712_start_tx(struct uart_port *port, u_int nonempty, u_int from_tty)
+{
+ unsigned int reg;
+ struct uart_info *info=(struct uart_info*)(port->iobase);
+
+// printk("it8712 start tx : \n");
+ reg = UART_GET_IER(port);
+ reg |= (UART_IER_THRI);
+ UART_PUT_IER(port, reg);
+ it8712_tx_chars(info);
+}
+
+static void it8712_modem_status(struct uart_info *info)
+{
+ unsigned int status;
+ struct uart_icount *icount = &info->port->icount;
+
+// printk("it8712 modem status : \n");
+
+ status = UART_GET_MSR(info->port);
+
+ if (!(status & (UART_MSR_DCTS | UART_MSR_DDSR |
+ UART_MSR_TERI | UART_MSR_DDCD)))
+ return;
+
+ if (status & UART_MSR_DCD) {
+ icount->dcd++;
+#ifdef CONFIG_HARD_PPS
+ if ((info->flags & ASYNC_HARDPPS_CD) &&
+ (status & UART_MSR_DCD_MSK))
+ hardpps();
+#endif
+ if (info->flags & ASYNC_CHECK_CD) {
+ if (status & UART_MSR_DCD)
+ wake_up_interruptible(&info->open_wait);
+ else if (!((info->flags & ASYNC_CALLOUT_ACTIVE) &&
+ (info->flags & ASYNC_CALLOUT_NOHUP))) {
+ if (info->tty)
+ tty_hangup(info->tty);
+ }
+ }
+ }
+
+ if (status & UART_MSR_DDSR)
+ icount->dsr++;
+
+ if (status & UART_MSR_DCTS) {
+ icount->cts++;
+
+ if (info->flags & ASYNC_CTS_FLOW) {
+ status &= UART_MSR_CTS;
+
+ if (info->tty->hw_stopped) {
+ if (status) {
+ info->tty->hw_stopped = 0;
+ info->ops->start_tx(info->port, 1, 0);
+ uart_event(info, EVT_WRITE_WAKEUP);
+ }
+ } else {
+ if (!status) {
+ info->tty->hw_stopped = 1;
+ info->ops->stop_tx(info->port, 0);
+ }
+ }
+ }
+ }
+ wake_up_interruptible(&info->delta_msr_wait);
+
+}
+
+static void it8712_int(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct uart_info *info = dev_id;
+ unsigned int status, pass_counter = 0;
+
+ status = UART_GET_INT_STATUS(info->port);
+ do {
+// printk("it8712_int: status %x \n", status);
+ switch(status)
+ {
+ case UART_IIR_RDI:
+ case UART_IIR_RLSI:
+ case UART_IIR_RCTO:
+ it8712_rx_chars(info, regs);
+ break;
+ case UART_IIR_THRI:
+ it8712_tx_chars(info);
+ break;
+ case UART_IIR_MSI:
+ it8712_modem_status(info);
+ break;
+ default:
+ break;
+ }
+ if (pass_counter++ > IT8712_ISR_PASS_LIMIT)
+ break;
+
+ status = UART_GET_INT_STATUS(info->port);
+ } while (status);
+}
+
+static u_int it8712_tx_empty(struct uart_port *port)
+{
+// printk("it8712 tx empty : \n");
+
+ return ((UART_GET_LSR(port) & UART_LSR_THRE)? TIOCSER_TEMT : 0);
+}
+
+static u_int it8712_get_mctrl(struct uart_port *port)
+{
+ unsigned int result = 0;
+ unsigned int status;
+
+// printk("it8712 get mctrl : \n");
+
+ status = UART_GET_MSR(port);
+ if (status & UART_MSR_DCD)
+ result |= TIOCM_CAR;
+ if (status & UART_MSR_DSR)
+ result |= TIOCM_DSR;
+ if (status & UART_MSR_CTS)
+ result |= TIOCM_CTS;
+ if (status & UART_MSR_RI)
+ result |= TIOCM_RI;
+
+ return result;
+}
+
+static void it8712_set_mctrl_null(struct uart_port *port, u_int mctrl)
+{
+}
+
+static void it8712_break_ctl(struct uart_port *port, int break_state)
+{
+ unsigned int lcr;
+
+// printk("it8712 break ctl : \n");
+
+ lcr = UART_GET_LCR(port);
+ if (break_state == -1)
+ lcr |= UART_LCR_SBC;
+ else
+ lcr &= ~UART_LCR_SBC;
+ UART_PUT_LCR(port, lcr);
+}
+
+static inline u_int uart_calculate_quot(struct uart_info *info, u_int baud)
+{
+ u_int quot;
+
+ /* Special case: B0 rate */
+ if (!baud)
+ baud = 9600;
+
+ quot = (info->port->uartclk/(16 * baud)) ;
+
+ return quot;
+}
+static void it8712_change_speed(struct uart_port *port, u_int cflag, u_int iflag, u_int quot)
+{
+ u_int uart_mc=0, old_ier;
+ unsigned long flags;
+
+#ifdef DEBUG
+ printk("it8712_set_cflag(0x%x) called\n", cflag);
+#endif
+
+
+ /* byte size and parity */
+ switch (cflag & CSIZE) {
+ case CS5: uart_mc = UART_LCR_WLEN5; break;
+ case CS6: uart_mc = UART_LCR_WLEN6; break;
+ case CS7: uart_mc = UART_LCR_WLEN7; break;
+ default: uart_mc = UART_LCR_WLEN8; break; // CS8
+ }
+ if (cflag & CSTOPB)
+ uart_mc|= UART_LCR_STOP;
+ if (cflag & PARENB) {
+ uart_mc |= UART_LCR_EVEN;
+ if (!(cflag & PARODD))
+ uart_mc |= UART_LCR_ODD;
+ }
+
+ port->read_status_mask = UART_LSR_OE;
+ if (iflag & INPCK)
+ port->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
+ if (iflag & (BRKINT | PARMRK))
+ port->read_status_mask |= UART_LSR_BI;
+
+ /*
+ * Characters to ignore
+ */
+ port->ignore_status_mask = 0;
+ if (iflag & IGNPAR)
+ port->ignore_status_mask |= UART_LSR_FE | UART_LSR_PE;
+ if (iflag & IGNBRK) {
+ port->ignore_status_mask |= UART_LSR_BI;
+ /*
+ * If we're ignoring parity and break indicators,
+ * ignore overruns to (for real raw support).
+ */
+ if (iflag & IGNPAR)
+ port->ignore_status_mask |= UART_LSR_OE;
+ }
+
+ /* first, disable everything */
+ save_flags(flags); cli();
+ old_ier = UART_GET_IER(port);
+
+ if ((port->flags & ASYNC_HARDPPS_CD) ||
+ (cflag & CRTSCTS) || !(cflag & CLOCAL))
+ old_ier |= UART_IER_MSI;
+
+ /* Set baud rate */
+ quot = quot / 13;
+ UART_PUT_LCR(port, UART_LCR_DLAB);
+ UART_PUT_DIV_LO(port, (quot & 0xff));
+ UART_PUT_DIV_HI(port, ((quot & 0xf00) >> 8));
+
+ UART_PUT_LCR(port, uart_mc);
+// UART_PUT_LCR(port, 0x07); // ???? it is wired
+ UART_PUT_MCR(port, 0x08);
+ UART_PUT_FCR(port, 0x01);
+ UART_PUT_IER(port, 0x05);
+
+ restore_flags(flags);
+}
+
+static int it8712_startup(struct uart_port *port, struct uart_info *info)
+{
+ int retval;
+ unsigned int regs;
+
+// printk("it8712 startup : \n");
+
+ /*
+ * Use iobase to store a pointer to info. We need this to start a
+ * transmission as the tranmittr interrupt is only generated on
+ * the transition to the idle state
+ */
+
+ port->iobase=(u_int)info;
+
+ /*
+ * Allocate the IRQ
+ */
+ retval = request_irq(port->irq, it8712_int, SA_INTERRUPT, "it8712", info);
+ if (retval)
+ return retval;
+
+ /* setup interrupt controller */
+ regs = *((volatile unsigned int *)IRQ_TMODE(IO_ADDRESS(SL2312_INTERRUPT_BASE)));
+ regs |= (IRQ_SERIRQ0_MASK);
+ *((volatile unsigned int *)IRQ_TMODE(IO_ADDRESS(SL2312_INTERRUPT_BASE))) = regs;
+ regs = *((volatile unsigned int *)IRQ_LEVEL(IO_ADDRESS(SL2312_INTERRUPT_BASE)));
+ regs &= ~(IRQ_SERIRQ0_MASK);
+ *((volatile unsigned int *)IRQ_LEVEL(IO_ADDRESS(SL2312_INTERRUPT_BASE))) = regs;
+ *((volatile unsigned int *)IRQ_MASK(IO_ADDRESS(SL2312_INTERRUPT_BASE))) |= (unsigned int)(IRQ_SERIRQ0_MASK);
+
+ /*
+ * Finally, enable interrupts. Use the TII interrupt to minimise
+ * the number of interrupts generated. If higher performance is
+ * needed, consider using the TI interrupt with a suitable FIFO
+ * threshold
+ */
+ UART_PUT_IER(port, (UART_IER_RDI|UART_IER_THRI));
+
+ return 0;
+}
+
+static void it8712_shutdown(struct uart_port *port, struct uart_info *info)
+{
+// printk("it8712 shutdown : \n");
+
+ /*
+ * disable all interrupts, disable the port
+ */
+ UART_PUT_IER(port, 0x0);
+
+ /* disable break condition and fifos */
+// UART_PUT_MCR(port, (UART_GET_MCR(port)&UART_MCR_MASK));
+
+ /*
+ * Free the interrupt
+ */
+ free_irq(port->irq, info);
+}
+
+static const char *it8712_type(struct uart_port *port)
+{
+ return port->type == PORT_IT8712 ? "IT8712" : NULL;
+}
+
+/*
+ * Release the memory region(s) being used by 'port'
+ */
+static void it8712_release_port(struct uart_port *port)
+{
+// printk("it8712 release port : \n");
+
+ release_mem_region(port->mapbase, UART_PORT_SIZE);
+}
+
+/*
+ * Request the memory region(s) being used by 'port'
+ */
+static int it8712_request_port(struct uart_port *port)
+{
+ return request_mem_region(port->mapbase, UART_PORT_SIZE,
+ "serial_it8712") != NULL ? 0 : -EBUSY;
+}
+
+/*
+ * Configure/autoconfigure the port.
+ */
+static void it8712_config_port(struct uart_port *port, int flags)
+{
+
+ if (flags & UART_CONFIG_TYPE) {
+ if (it8712_request_port(port) == 0)
+ port->type = PORT_IT8712;
+ }
+}
+
+/*
+ * verify the new serial_struct (for TIOCSSERIAL).
+ */
+static int it8712_verify_port(struct uart_port *port, struct serial_struct *ser)
+{
+ int ret = 0;
+
+ if (ser->type != PORT_UNKNOWN && ser->type != PORT_UART00)
+ 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 it8712_pops = {
+ tx_empty: it8712_tx_empty,
+ set_mctrl: it8712_set_mctrl_null,
+ get_mctrl: it8712_get_mctrl,
+ stop_tx: it8712_stop_tx,
+ start_tx: it8712_start_tx,
+ stop_rx: it8712_stop_rx,
+ enable_ms: it8712_enable_ms,
+ break_ctl: it8712_break_ctl,
+ startup: it8712_startup,
+ shutdown: it8712_shutdown,
+ change_speed: it8712_change_speed,
+ type: it8712_type,
+ release_port: it8712_release_port,
+ request_port: it8712_request_port,
+ config_port: it8712_config_port,
+ verify_port: it8712_verify_port,
+};
+
+#ifdef CONFIG_ARCH_SL2312
+
+static struct uart_port it8712_ports[UART_NR] = {
+ {
+ membase: (void *)0,
+ mapbase: 0,
+ iotype: SERIAL_IO_MEM,
+ irq: 0,
+ uartclk: UART_CLK/2,
+ fifosize: 16,
+ ops: &it8712_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+ }
+};
+
+#endif
+
+#ifdef CONFIG_SERIAL_IT8712_CONSOLE
+#ifdef used_and_not_const_char_pointer
+static int it8712_console_read(struct uart_port *port, char *s, u_int count)
+{
+ unsigned int status;
+ int c;
+#ifdef DEBUG
+ printk("it8712_console_read() called\n");
+#endif
+
+ c = 0;
+ while (c < count) {
+ status = UART_GET_LSR(port);
+ if (UART_RX_DATA(status)) {
+ *s++ = UART_GET_CHAR(port);
+ c++;
+ } else {
+ // nothing more to get, return
+ return c;
+ }
+ }
+ // return the count
+ return c;
+}
+#endif
+static void it8712_console_write(struct console *co, const char *s, unsigned count)
+{
+#ifdef CONFIG_ARCH_SL2312
+ struct uart_port *port = it8712_ports + co->index;
+ unsigned int status, old_ies;
+ int i;
+
+ /*
+ * First save the CR then disable the interrupts
+ */
+ old_ies = UART_GET_IER(port);
+ UART_PUT_IER(port,0x0);
+
+ /*
+ * Now, do each character
+ */
+ for (i = 0; i < count; i++) {
+ do {
+ status = UART_GET_LSR(port);
+ } while (!UART_TX_READY(status));
+ UART_PUT_CHAR(port, s[i]);
+ if (s[i] == '\n') {
+ do {
+ status = UART_GET_LSR(port);
+ } while (!UART_TX_READY(status));
+ UART_PUT_CHAR(port, '\r');
+ }
+ }
+
+ /*
+ * Finally, wait for transmitter to become empty
+ * and restore the IES
+ */
+ do {
+ status = UART_GET_LSR(port);
+ } while (!(status&UART_LSR_THRE));
+ UART_PUT_IER(port, old_ies);
+#endif
+}
+
+static kdev_t it8712_console_device(struct console *co)
+{
+ return MKDEV(SERIAL_IT8712_MAJOR, SERIAL_IT8712_MINOR + co->index);
+}
+
+static int it8712_console_wait_key(struct console *co)
+{
+#ifdef CONFIG_ARCH_SL2312
+ struct uart_port *port = (it8712_ports + co->index);
+ unsigned int status;
+
+ do {
+ status = UART_GET_LSR(port);
+ } while (!UART_RX_DATA(status));
+ return UART_GET_CHAR(port);
+#else
+ return 0;
+#endif
+}
+
+static void /*__init*/ it8712_console_get_options(struct uart_port *port, int *baud, int *parity, int *bits)
+{
+ printk("it8712 console get options : \n");
+
+ u_int uart_mc, quot;
+ uart_mc= UART_GET_MCR(port);
+
+ *parity = 'n';
+ if (uart_mc & UART_LCR_PARITY) {
+ if (uart_mc & UART_LCR_EVEN)
+ *parity = 'e';
+ else
+ *parity = 'o';
+ }
+
+ switch (uart_mc & UART_LCR_MSK){
+
+ case UART_LCR_WLEN5:
+ *bits = 5;
+ break;
+ case UART_LCR_WLEN6:
+ *bits = 6;
+ break;
+ case UART_LCR_WLEN7:
+ *bits = 7;
+ break;
+ case UART_LCR_WLEN8:
+ *bits = 8;
+ break;
+ }
+ UART_PUT_MCR(port,UART_LCR_DLAB);
+ quot = UART_GET_DIV_LO(port) | (UART_GET_DIV_HI(port) << 8);
+ UART_PUT_MCR(port,uart_mc);
+ *baud = (port->uartclk / (16 *quot));
+}
+
+static int __init it8712_console_setup(struct console *co, char *options)
+{
+ struct uart_port *port;
+ int baud = 38400;
+ int bits = 8;
+ int parity = 'n';
+ int flow= 'n';
+ int base, irq;
+ int i ;
+
+// printk("it8712 console setup : \n");
+
+ LPCSetConfig(0, 0x02, 0x01);
+ LPCSetConfig(LDN_SERIAL1, 0x30, 0x1);
+ LPCSetConfig(LDN_SERIAL1, 0x23, 0x0);
+ base = IT8712_IO_BASE;
+ base += ((LPCGetConfig(LDN_SERIAL1, 0x60) << 8) + LPCGetConfig(LDN_SERIAL1, 0x61));
+ it8712_ports[0].mapbase = base;
+ it8712_ports[0].membase = IO_ADDRESS(base);
+ it8712_ports[0].irq = IRQ_SERIRQ0_OFFSET;
+ irq = LPCGetConfig(LDN_SERIAL1, 0x70);
+ it8712_ports[0].irq += irq;
+
+ printk("it8712 irq is %x %x \n", it8712_ports[0].irq, irq);
+
+ // setup LPC Host 'quiet mode'
+ *((volatile unsigned int *)IO_ADDRESS((SL2312_LPC_HOST_BASE+0x04))) |= LPC_HOST_CONTINUE_MODE ;
+ for(i=0;i<1000;i++) ; // delay
+ *((volatile unsigned int *)IO_ADDRESS((SL2312_LPC_HOST_BASE+0x04))) &= ~(LPC_HOST_CONTINUE_MODE) ;
+
+#ifdef CONFIG_ARCH_SL2312
+ /*
+ * Check whether an invalid uart number has been specified, and
+ * if so, search for the first available port that does have
+ * console support.
+ */
+ port = uart_get_console(it8712_ports,IT8712_NO_PORTS,co);
+#else
+ return -ENODEV;
+#endif
+
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ else
+ it8712_console_get_options(port, &baud, &parity, &bits);
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+static struct console it8712_console = {
+ name: SERIAL_IT8712_NAME,
+ write: it8712_console_write,
+#ifdef used_and_not_const_char_pointer
+ read: it8712_console_read,
+#endif
+ device: it8712_console_device,
+// wait_key: it8712_console_wait_key,
+ setup: it8712_console_setup,
+ flags: (CON_PRINTBUFFER|CON_ENABLED),
+ index: -1,
+};
+
+void __init it8712_console_init(void)
+{
+ register_console(&it8712_console);
+}
+
+#define IT8712_CONSOLE &it8712_console
+#else
+#define IT8712_CONSOLE NULL
+#endif
+
+static struct uart_driver it8712_reg = {
+ owner: NULL,
+ normal_major: SERIAL_IT8712_MAJOR,
+ normal_name: SERIAL_IT8712_NAME,
+ normal_driver: &normal,
+ callout_major: CALLOUT_IT8712_MAJOR,
+ callout_name: CALLOUT_IT8712_NAME,
+ callout_driver: &callout,
+ table: it8712_table,
+ termios: it8712_termios,
+ termios_locked: it8712_termios_locked,
+ minor: SERIAL_IT8712_MINOR,
+ nr: UART_NR,
+#ifdef CONFIG_ARCH_SL2312
+ port: it8712_ports,
+#endif
+ state: NULL,
+ cons: IT8712_CONSOLE,
+};
+
+static int __init it8712_init(void)
+{
+// printk("serial_it8712: it871212_init \n");
+
+ return uart_register_driver(&it8712_reg);
+}
+
+
+__initcall(it8712_init);
Index: linux-2.6.23.16/drivers/serial/serial_sl2312.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.23.16/drivers/serial/serial_sl2312.c 2008-03-17 12:30:50.290536619 +0200
@@ -0,0 +1,827 @@
+/*
+ * linux/drivers/char/serial_uart00.c
+ *
+ * Driver for UART00 serial ports
+ *
+ * Based on drivers/char/serial_amba.c, by ARM Limited &
+ * Deep Blue Solutions Ltd.
+ * Copyright 2001 Altera Corporation
+ *
+ * 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
+ *
+ * $Id: serial_sl2312.c,v 1.1.1.1 2006/04/03 08:41:00 amos_lee Exp $
+ *
+ */
+#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/console.h>
+#include <linux/sysrq.h>
+#include <linux/serial_core.h>
+
+#include <asm/system.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <asm/sizes.h>
+#include <linux/spinlock.h>
+#include <linux/irq.h>
+
+
+#if defined(CONFIG_SERIAL_SL2312_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
+#include <asm/arch/sl2312.h>
+#define UART_TYPE (volatile unsigned int*)
+#include <asm/arch/uart.h>
+#include <asm/arch/int_ctrl.h>
+
+// #define DEBUG 1
+#define UART_NR 1
+
+
+#define SERIAL_SL2312_NAME "ttySL"
+#define SERIAL_SL2312_MAJOR 204
+#define SERIAL_SL2312_MINOR 40 /* Temporary - will change in future */
+#define SERIAL_SL2312_NR UART_NR
+#define UART_PORT_SIZE 0x50
+
+#define SL2312_NO_PORTS UART_NR
+#define SL2312_ISR_PASS_LIMIT 256
+
+/*
+ * Access macros for the SL2312 UARTs
+ */
+#define UART_GET_INT_STATUS(p) (inl(UART_IIR((p)->membase)) & 0x0F) // interrupt identification
+#define UART_PUT_IER(p, c) outl(c,UART_IER((p)->membase)) // interrupt enable
+#define UART_GET_IER(p) inl(UART_IER((p)->membase))
+#define UART_PUT_CHAR(p, c) outl(c,UART_THR((p)->membase)) // transmitter holding
+#define UART_GET_CHAR(p) inl(UART_RBR((p)->membase)) // receive buffer
+#define UART_GET_LSR(p) inl(UART_LSR((p)->membase)) // line status
+#define UART_GET_MSR(p) inl(UART_MSR((p)->membase)) // modem status
+#define UART_GET_MCR(p) inl(UART_MCR((p)->membase)) // modem control
+#define UART_PUT_MCR(p, c) outl(c,UART_MCR((p)->membase))
+#define UART_GET_LCR(p) inl(UART_LCR((p)->membase)) // mode control
+#define UART_PUT_LCR(p, c) outl(c,UART_LCR((p)->membase))
+#define UART_GET_DIV_HI(p) inl(UART_DIV_HI((p)->membase))
+#define UART_PUT_DIV_HI(p, c) outl(c,UART_DIV_HI((p)->membase))
+#define UART_GET_DIV_LO(p) inl(UART_DIV_LO((p)->membase))
+#define UART_PUT_DIV_LO(p, c) outl(c,UART_DIV_LO((p)->membase))
+#define UART_PUT_MDR(p, c) outl(c,UART_MDR((p)->membase))
+#define UART_RX_DATA(s) ((s) & UART_LSR_DR)
+#define UART_TX_READY(s) ((s) & UART_LSR_THRE)
+
+
+static void sl2312_stop_tx(struct uart_port *port)
+{
+ unsigned int reg;
+
+// printk("sl2312 stop tx : \n");
+ reg = UART_GET_IER(port);
+ reg &= ~(UART_IER_TE);
+ UART_PUT_IER(port, reg);
+}
+
+static void sl2312_stop_rx(struct uart_port *port)
+{
+ unsigned int reg;
+
+// printk("sl2312 stop rx : \n");
+ reg = UART_GET_IER(port);
+ reg &= ~(UART_IER_DR);
+ UART_PUT_IER(port, reg);
+
+}
+
+static void sl2312_enable_ms(struct uart_port *port)
+{
+ unsigned int reg;
+
+// printk("sl2312 enable ms : \n");
+
+ reg = UART_GET_IER(port);
+ reg |= (UART_IER_MS);
+ UART_PUT_IER(port, reg);
+
+}
+
+static void
+sl2312_rx_chars(struct uart_port *port)
+{
+ struct tty_struct *tty = port->info->tty;
+ unsigned int status, mask, ch, flg, ignored = 0;
+
+
+ // printk("sl2312_rx_chars : \n");
+ status = UART_GET_LSR(port);
+ while (UART_RX_DATA(status)) {
+
+ /*
+ * We need to read rds before reading the
+ * character from the fifo
+ */
+ ch = UART_GET_CHAR(port);
+ port->icount.rx++;
+
+ //if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ if (tty && !tty_buffer_request_room(tty, 1))
+ goto ignore_char;
+
+ flg = TTY_NORMAL;
+
+ /*
+ * Note that the error handling code is
+ * out of the main execution path
+ */
+
+ if (status & (UART_LSR_OE|UART_LSR_PE|UART_LSR_FE|UART_LSR_BI|UART_LSR_DE))
+ goto handle_error;
+ if (uart_handle_sysrq_char(port, ch))
+ goto ignore_char;
+
+ error_return:
+ //*tty->flip.flag_buf_ptr++ = flg;
+ //*tty->flip.char_buf_ptr++ = ch;
+ //tty->flip.count++;
+ tty_insert_flip_char(tty, ch, flg);
+ ignore_char:
+ status = UART_GET_LSR(port);
+ } // end of while
+out:
+ tty_flip_buffer_push(tty);
+ return;
+
+handle_error:
+ if (status & UART_LSR_BI) {
+ status &= ~(UART_LSR_FE);
+ port->icount.brk++;
+
+#ifdef SUPPORT_SYSRQ
+ if (uart_handle_break(port))
+ goto ignore_char;
+#endif
+ } else if (status & UART_LSR_PE)
+ port->icount.parity++;
+ else if (status & UART_LSR_FE)
+ port->icount.frame++;
+
+ if (status & UART_LSR_OE)
+ port->icount.overrun++;
+
+ if (status & port->ignore_status_mask) {
+ if (++ignored > 100)
+ goto out;
+ goto ignore_char;
+ }
+
+ mask = status & port->read_status_mask;
+
+ if (mask & UART_LSR_BI)
+ flg = TTY_BREAK;
+ else if (mask & UART_LSR_PE)
+ flg = TTY_PARITY;
+ else if (mask & UART_LSR_FE)
+ flg = TTY_FRAME;
+
+ if (status & UART_LSR_OE) {
+ /*
+ * CHECK: does overrun affect the current character?
+ * ASSUMPTION: it does not.
+ */
+ //*tty->flip.flag_buf_ptr++ = flg;
+ //*tty->flip.char_buf_ptr++ = ch;
+ //tty->flip.count++;
+
+ tty_insert_flip_char(tty, 0, TTY_BREAK);
+
+ // if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ if (tty_buffer_request_room(tty, 1))
+ goto ignore_char;
+ ch = 0;
+ flg = TTY_OVERRUN;
+ }
+#ifdef SUPPORT_SYSRQ
+ port->sysrq = 0;
+#endif
+ goto error_return;
+}
+
+static void sl2312_tx_chars(struct uart_port *port)
+{
+ struct circ_buf *xmit = &port->info->xmit;
+ int count;
+
+
+ if (port->x_char) {
+ while(!(UART_GET_LSR(port)&UART_LSR_THRE));
+ UART_PUT_CHAR(port, port->x_char);
+ port->icount.tx++;
+ port->x_char = 0;
+
+ return;
+ }
+ if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
+ sl2312_stop_tx(port);
+
+ return;
+ }
+
+ count = port->fifosize >> 1;
+ do {
+ while(!(UART_GET_LSR(port)&UART_LSR_THRE));
+ UART_PUT_CHAR(port, xmit->buf[xmit->tail]);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ port->icount.tx++;
+ if (uart_circ_empty(xmit))
+ break;
+ } while (--count > 0);
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_write_wakeup(port);
+
+ if (uart_circ_empty(xmit))
+ sl2312_stop_tx(port);
+
+}
+
+static void sl2312_start_tx(struct uart_port *port)
+{
+ unsigned int reg;
+
+// printk("sl2312 start tx : \n");
+ reg = UART_GET_IER(port);
+ reg |= (UART_IER_TE);
+ UART_PUT_IER(port, reg);
+
+ sl2312_tx_chars(port);
+}
+
+static void sl2312_modem_status(struct uart_port *port)
+{
+ unsigned int status;
+
+// printk("it8712 modem status : \n");
+
+ status = UART_GET_MSR(port);
+
+ if (!(status & (UART_MSR_DCTS | UART_MSR_DDSR |
+ UART_MSR_TERI | UART_MSR_DDCD)))
+ return;
+
+ if (status & UART_MSR_DDCD)
+ uart_handle_dcd_change(port, status & UART_MSR_DCD);
+
+ if (status & UART_MSR_DDSR)
+ port->icount.dsr++;
+
+ if (status & UART_MSR_DCTS)
+ uart_handle_cts_change(port, status & UART_MSR_CTS);
+
+ wake_up_interruptible(&port->info->delta_msr_wait);
+
+}
+
+static irqreturn_t sl2312_int(int irq, void *dev_id)
+{
+ struct uart_port *port = dev_id;
+ unsigned int status, pass_counter = 0;
+
+ status = UART_GET_INT_STATUS(port);
+ do {
+ switch(status)
+ {
+ case UART_IIR_DR:
+ case UART_IIR_RLS:
+ sl2312_rx_chars(port);
+ break;
+ case UART_IIR_TE:
+ sl2312_tx_chars(port);
+ break;
+ case UART_IIR_MODEM:
+ sl2312_modem_status(port);
+ break;
+ default:
+ break;
+ }
+ if (pass_counter++ > SL2312_ISR_PASS_LIMIT)
+ break;
+
+ status = UART_GET_INT_STATUS(port);
+ } while (status);
+
+ return IRQ_HANDLED;
+}
+
+static u_int sl2312_tx_empty(struct uart_port *port)
+{
+// printk("sl2312 tx empty : \n");
+
+ return ((UART_GET_LSR(port) & UART_LSR_TE)? TIOCSER_TEMT : 0);
+}
+
+static u_int sl2312_get_mctrl(struct uart_port *port)
+{
+ unsigned int result = 0;
+ unsigned int status;
+
+// printk("sl2312 get mctrl : \n");
+
+ status = UART_GET_MSR(port);
+ if (status & UART_MSR_DCD)
+ result |= TIOCM_CAR;
+ if (status & UART_MSR_DSR)
+ result |= TIOCM_DSR;
+ if (status & UART_MSR_CTS)
+ result |= TIOCM_CTS;
+ if (status & UART_MSR_RI)
+ result |= TIOCM_RI;
+
+ return result;
+}
+
+static void sl2312_set_mctrl_null(struct uart_port *port, u_int mctrl)
+{
+}
+
+static void sl2312_break_ctl(struct uart_port *port, int break_state)
+{
+ unsigned int lcr;
+
+// printk("sl2312 break ctl : \n");
+
+ lcr = UART_GET_LCR(port);
+ if (break_state == -1)
+ lcr |= UART_LCR_SETBREAK;
+ else
+ lcr &= ~UART_LCR_SETBREAK;
+ UART_PUT_LCR(port, lcr);
+}
+
+static inline u_int uart_calculate_quot(struct uart_port *port, u_int baud)
+{
+ u_int quot;
+
+ /* Special case: B0 rate */
+ if (!baud)
+ baud = 9600;
+
+ quot = (port->uartclk / (16 * baud)-1) ;
+
+ return quot;
+}
+
+static void sl2312_set_termios(struct uart_port *port, struct ktermios *termios,
+ struct ktermios *old)
+{
+ unsigned int uart_mc, old_ier, baud, quot;
+ unsigned long flags;
+
+ termios->c_cflag |= CREAD;
+#ifdef DEBUG
+ printk("it8712_set_cflag(0x%x) called\n", cflag);
+#endif
+ baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
+ quot = (port->uartclk / (16 * baud)) ;
+ //uart_get_divisor(port, baud);
+
+ /* byte size and parity */
+ switch (termios->c_cflag & CSIZE) {
+ case CS5:
+ uart_mc = UART_LCR_LEN5;
+ break;
+ case CS6:
+ uart_mc = UART_LCR_LEN6;
+ break;
+ case CS7:
+ uart_mc = UART_LCR_LEN7;
+ break;
+ default: // CS8
+ uart_mc = UART_LCR_LEN8;
+ break;
+ }
+
+ if (termios->c_cflag & CSTOPB)
+ uart_mc|= UART_LCR_STOP;
+ if (termios->c_cflag & PARENB) {
+ uart_mc |= UART_LCR_EVEN;
+ if (!(termios->c_cflag & PARODD))
+ uart_mc |= UART_LCR_ODD;
+ }
+
+ spin_lock_irqsave(&port->lock, flags);
+ /*
+ * Update the per-port timeout
+ */
+ uart_update_timeout(port, termios->c_cflag, baud);
+ port->read_status_mask = UART_LSR_OE;
+ if (termios->c_iflag & INPCK)
+ port->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
+ if (termios->c_iflag & (BRKINT | PARMRK))
+ port->read_status_mask |= UART_LSR_BI;
+
+ /*
+ * Characters to ignore
+ */
+ port->ignore_status_mask = 0;
+ if (termios->c_iflag & IGNPAR)
+ port->ignore_status_mask |= UART_LSR_FE | UART_LSR_PE;
+ if (termios->c_iflag & IGNBRK) {
+ port->ignore_status_mask |= UART_LSR_BI;
+ /*
+ * If we're ignoring parity and break indicators,
+ * ignore overruns to (for real raw support).
+ */
+ if (termios->c_iflag & IGNPAR)
+ port->ignore_status_mask |= UART_LSR_OE;
+ }
+
+ //save_flags(flags); cli();
+ old_ier = UART_GET_IER(port);
+
+ if(UART_ENABLE_MS(port, termios->c_cflag))
+ old_ier |= UART_IER_MS;
+
+ /* Set baud rate */
+ UART_PUT_LCR(port, UART_LCR_DLAB);
+ UART_PUT_DIV_LO(port, (quot & 0xff));
+ UART_PUT_DIV_HI(port, ((quot & 0xf00) >> 8));
+
+ UART_PUT_LCR(port, uart_mc);
+ UART_PUT_IER(port, old_ier);
+
+ //restore_flags(flags);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+
+
+static int sl2312_startup(struct uart_port *port)
+{
+ int retval;
+ unsigned int regs;
+
+// printk("sl2312 startup : \n");
+
+ /*
+ * Use iobase to store a pointer to info. We need this to start a
+ * transmission as the tranmittr interrupt is only generated on
+ * the transition to the idle state
+ */
+
+ /*
+ * Allocate the IRQ
+ */
+ retval = request_irq(port->irq, sl2312_int, IRQF_DISABLED, "sl2312", port);
+ if (retval)
+ return retval;
+
+ /* setup interrupt controller */
+ regs = *((volatile unsigned int *)IRQ_TMODE(IO_ADDRESS(SL2312_INTERRUPT_BASE)));
+ regs &= ~(IRQ_UART_MASK);
+ *((volatile unsigned int *)IRQ_TMODE(IO_ADDRESS(SL2312_INTERRUPT_BASE))) = regs;
+ regs = *((volatile unsigned int *)IRQ_TLEVEL(IO_ADDRESS(SL2312_INTERRUPT_BASE)));
+ regs &= ~(IRQ_UART_MASK);
+ *((volatile unsigned int *)IRQ_TLEVEL(IO_ADDRESS(SL2312_INTERRUPT_BASE))) = regs;
+ *((volatile unsigned int *)IRQ_MASK(IO_ADDRESS(SL2312_INTERRUPT_BASE))) |= (unsigned int)(IRQ_UART_MASK);
+
+ /*
+ * Finally, enable interrupts. Use the TII interrupt to minimise
+ * the number of interrupts generated. If higher performance is
+ * needed, consider using the TI interrupt with a suitable FIFO
+ * threshold
+ */
+ UART_PUT_IER(port, (UART_IER_DR|UART_IER_TE));
+
+ return 0;
+}
+
+static void sl2312_shutdown(struct uart_port *port)
+{
+// printk("sl2312 shutdown : \n");
+
+ /*
+ * disable all interrupts, disable the port
+ */
+ UART_PUT_IER(port, 0x0);
+
+ /* disable break condition and fifos */
+// UART_PUT_MCR(port, (UART_GET_MCR(port)&UART_MCR_MASK));
+
+ /*
+ * Free the interrupt
+ */
+ free_irq(port->irq, port);
+}
+
+static const char *sl2312_type(struct uart_port *port)
+{
+ return port->type == PORT_SL2312 ? "SL2312" : NULL;
+}
+
+/*
+ * Release the memory region(s) being used by 'port'
+ */
+static void sl2312_release_port(struct uart_port *port)
+{
+// printk("sl2312 release port : \n");
+
+ release_mem_region(port->mapbase, UART_PORT_SIZE);
+}
+
+/*
+ * Request the memory region(s) being used by 'port'
+ */
+static int sl2312_request_port(struct uart_port *port)
+{
+ return request_mem_region(port->mapbase, UART_PORT_SIZE,
+ "serial_sl2312") != NULL ? 0 : -EBUSY;
+}
+
+/*
+ * Configure/autoconfigure the port.
+ */
+static void sl2312_config_port(struct uart_port *port, int flags)
+{
+
+ if (flags & UART_CONFIG_TYPE) {
+ if (sl2312_request_port(port) == 0)
+ port->type = PORT_SL2312;
+ }
+}
+
+/*
+ * verify the new serial_struct (for TIOCSSERIAL).
+ */
+static int sl2312_verify_port(struct uart_port *port, struct serial_struct *ser)
+{
+ int ret = 0;
+
+ if (ser->type != PORT_UNKNOWN && ser->type != PORT_UART00)
+ 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 sl2312_pops = {
+ .tx_empty =sl2312_tx_empty,
+ .set_mctrl =sl2312_set_mctrl_null,
+ .get_mctrl =sl2312_get_mctrl,
+ .stop_tx =sl2312_stop_tx,
+ .start_tx =sl2312_start_tx,
+ .stop_rx =sl2312_stop_rx,
+ .enable_ms =sl2312_enable_ms,
+ .break_ctl =sl2312_break_ctl,
+ .startup =sl2312_startup,
+ .shutdown =sl2312_shutdown,
+ .set_termios =sl2312_set_termios,
+ .type =sl2312_type,
+ .release_port =sl2312_release_port,
+ .request_port =sl2312_request_port,
+ .config_port =sl2312_config_port,
+ .verify_port =sl2312_verify_port,
+};
+
+#ifdef CONFIG_ARCH_SL2312
+
+static struct uart_port sl2312_ports[UART_NR] = {
+ {
+ membase: (void *)IO_ADDRESS(SL2312_UART_BASE),
+ mapbase: SL2312_UART_BASE,
+ iotype: SERIAL_IO_MEM,
+ irq: IRQ_UART,
+ uartclk: UART_CLK,
+ fifosize: 16,
+ ops: &sl2312_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+ }
+};
+
+#endif
+
+#ifdef CONFIG_SERIAL_SL2312_CONSOLE
+#ifdef used_and_not_const_char_pointer
+static int sl2312_console_read(struct uart_port *port, char *s, u_int count)
+{
+ unsigned int status;
+ int c;
+#ifdef DEBUG
+ printk("sl2312_console_read() called\n");
+#endif
+
+ c = 0;
+ while (c < count) {
+ status = UART_GET_LSR(port);
+ if (UART_RX_DATA(status)) {
+ *s++ = UART_GET_CHAR(port);
+ c++;
+ } else {
+ // nothing more to get, return
+ return c;
+ }
+ }
+ // return the count
+ return c;
+}
+#endif
+static void sl2312_console_write(struct console *co, const char *s, unsigned count)
+{
+#ifdef CONFIG_ARCH_SL2312
+ struct uart_port *port = sl2312_ports + co->index;
+ unsigned int status, old_ies;
+ int i;
+
+ /*
+ * First save the CR then disable the interrupts
+ */
+ old_ies = UART_GET_IER(port);
+ UART_PUT_IER(port,0x0);
+
+ /*
+ * Now, do each character
+ */
+ for (i = 0; i < count; i++) {
+ do {
+ status = UART_GET_LSR(port);
+ } while (!UART_TX_READY(status));
+ UART_PUT_CHAR(port, s[i]);
+ if (s[i] == '\n') {
+ do {
+ status = UART_GET_LSR(port);
+ } while (!UART_TX_READY(status));
+ UART_PUT_CHAR(port, '\r');
+ }
+ }
+
+ /*
+ * Finally, wait for transmitter to become empty
+ * and restore the IES
+ */
+ do {
+ status = UART_GET_LSR(port);
+ } while (!(status&UART_LSR_TE));
+ UART_PUT_IER(port, old_ies);
+#endif
+}
+
+#if 0
+static void sl2312_console_device(struct console *co,int *index)
+{
+
+ struct uart_driver *p = co->data;
+ *index = co->index;
+ return p->tty_driver;
+
+}
+#endif
+
+static void /*__init*/ sl2312_console_get_options(struct uart_port *port, int *baud, int *parity, int *bits)
+{
+// printk("sl2312 console get options : \n");
+
+ u_int uart_mc, quot;
+ uart_mc= UART_GET_MCR(port);
+
+ *parity = 'n';
+ if (uart_mc & UART_LCR_PE) {
+ if (uart_mc & UART_LCR_EVEN)
+ *parity = 'e';
+ else
+ *parity = 'o';
+ }
+
+ switch (uart_mc & UART_LCR_MSK){
+
+ case UART_LCR_LEN5:
+ *bits = 5;
+ break;
+ case UART_LCR_LEN6:
+ *bits = 6;
+ break;
+ case UART_LCR_LEN7:
+ *bits = 7;
+ break;
+ case UART_LCR_LEN8:
+ *bits = 8;
+ break;
+ }
+ UART_PUT_MCR(port,UART_LCR_DLAB);
+ quot = UART_GET_DIV_LO(port) | (UART_GET_DIV_HI(port) << 8);
+ UART_PUT_MCR(port,uart_mc);
+ *baud = port->uartclk / (16 *quot );
+}
+
+static int __init sl2312_console_setup(struct console *co, char *options)
+{
+ struct uart_port *port;
+ int baud = 19200;
+ int bits = 8;
+ int parity = 'n';
+ int flow= 'n';
+
+ printk("sl2312 console setup : \n");
+
+#ifdef CONFIG_ARCH_SL2312
+ /*
+ * Check whether an invalid uart number has been specified, and
+ * if so, search for the first available port that does have
+ * console support.
+ */
+ port = uart_get_console(sl2312_ports,SL2312_NO_PORTS,co);
+#else
+ return -ENODEV;
+#endif
+
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ else
+ sl2312_console_get_options(port, &baud, &parity, &bits);
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+extern struct uart_driver sl2312_reg;
+static struct console sl2312_console = {
+ .name = SERIAL_SL2312_NAME,
+ .write = sl2312_console_write,
+ .device = uart_console_device,
+// .device = sl2312_console_device,
+ .setup = sl2312_console_setup,
+// .flags = (CON_PRINTBUFFER|CON_ENABLED),
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+ .data = &sl2312_reg,
+};
+
+static int __init sl2312_console_init(void)
+{
+ register_console(&sl2312_console);
+ return 0;
+
+}
+
+console_initcall(sl2312_console_init);
+
+#define SL2312_CONSOLE &sl2312_console
+#else
+#define SL2312_CONSOLE NULL
+#endif
+
+// static
+struct uart_driver sl2312_reg = {
+ .owner = NULL,
+ .driver_name = SERIAL_SL2312_NAME,
+ .dev_name = SERIAL_SL2312_NAME,
+ .major = SERIAL_SL2312_MAJOR,
+ .minor = SERIAL_SL2312_MINOR,
+ .nr = UART_NR,
+ .cons = SL2312_CONSOLE,
+};
+
+static int __init sl2312_init(void)
+{
+ int result;
+ //printk("serial_it8712: it871212_init \n");
+
+ result = uart_register_driver(&sl2312_reg);
+ if(result)
+ return result;
+ result = uart_add_one_port(&sl2312_reg, &sl2312_ports[0]);
+
+ return result;
+}
+
+
+__initcall(sl2312_init);
Index: linux-2.6.23.16/include/linux/serial_core.h
===================================================================
--- linux-2.6.23.16.orig/include/linux/serial_core.h 2008-03-15 17:59:22.566564448 +0200
+++ linux-2.6.23.16/include/linux/serial_core.h 2008-03-15 17:59:53.568330991 +0200
@@ -147,6 +147,10 @@
#define PORT_SB1250_DUART 77
+/* Storlink Soc */
+#define PORT_SL2312 72
+#define PORT_IT8712 73
+
#ifdef __KERNEL__
#include <linux/compiler.h>
Index: linux-2.6.23.16/drivers/char/Makefile
===================================================================
--- linux-2.6.23.16.orig/drivers/char/Makefile 2008-03-15 17:59:22.566564448 +0200
+++ linux-2.6.23.16/drivers/char/Makefile 2008-03-17 12:19:43.252524398 +0200
@@ -70,6 +70,16 @@
obj-$(CONFIG_APPLICOM) += applicom.o
obj-$(CONFIG_SONYPI) += sonypi.o
obj-$(CONFIG_RTC) += rtc.o
+
+### for Storlink SoC ###
+obj-$(CONFIG_SL2312_RTC) += sl2312_rtc.o
+obj-$(CONFIG_IT8712_GPIO) += it8712_gpio.o
+obj-$(CONFIG_GEMINI_GPIO) += gemini_gpio.o
+obj-$(CONFIG_GEMINI_PWC) += gemini_pwr.o
+obj-$(CONFIG_GEMINI_CIR) += gemini_cir.o
+obj-$(CONFIG_GEMINI_I2S) += gemini_i2s.o
+obj-$(CONFIG_SL2312_WATCHDOG) += sl2312_wd.o
+
obj-$(CONFIG_HPET) += hpet.o
obj-$(CONFIG_GEN_RTC) += genrtc.o
obj-$(CONFIG_EFI_RTC) += efirtc.o
Index: linux-2.6.23.16/drivers/serial/Kconfig
===================================================================
--- linux-2.6.23.16.orig/drivers/serial/Kconfig 2008-03-15 17:59:22.566564448 +0200
+++ linux-2.6.23.16/drivers/serial/Kconfig 2008-03-15 17:59:53.568330991 +0200
@@ -280,6 +280,56 @@
comment "Non-8250 serial port support"
+config SERIAL_SL2312
+ bool "SL2312 serial port (sl2312) support"
+ depends on ARCH_SL2312
+ select SERIAL_CORE
+ select SERIAL_SL2312_CONSOLE
+ help
+ Say Y here if you want to use the hard logic uart on SWORD. This
+ driver also supports soft logic implentations of this uart core.
+
+config SERIAL_SL2312_CONSOLE
+ bool "Support for console on SL2312 serial port"
+ depends on SERIAL_SL2312
+ select SERIAL_CORE_CONSOLE
+ help
+ Say Y here if you want to support a serial console on an SWORD
+ hard logic uart or uart00 IP core.
+
+ Even if you say Y here, the currently visible virtual console
+ (/dev/tty0) will still be used as the system console by default, but
+ you can alter that using a kernel command line option such as
+ "console=ttySL0". (Try "man bootparam" or see the documentation of
+ your boot loader (lilo or loadlin) about how to pass options to the
+ kernel at boot time.)
+
+
+config SERIAL_IT8712
+ bool "Sl2312 serial port(IT8712) support"
+ depends on ARM && ARCH_SL2312 && SL2312_LPC
+ select SERIAL_CORE
+ select SERIAL_IT8712_CONSOLE
+ help
+ Say Y here if you want to use the hard logic uart on Excalibur. This
+ driver also supports soft logic implentations of this uart core.
+
+config SERIAL_IT8712_CONSOLE
+ bool "Support for console on Sword serial port(IT8712)"
+ depends on SERIAL_IT8712
+ select SERIAL_CORE_CONSOLE
+ help
+ Say Y here if you want to support a serial console on an Excalibur
+ hard logic uart or uart00 IP core.
+
+ Even if you say Y here, the currently visible virtual console
+ (/dev/tty0) will still be used as the system console by default, but
+ you can alter that using a kernel command line option such as
+ "console=ttySI0". (Try "man bootparam" or see the documentation of
+ your boot loader (lilo or loadlin) about how to pass options to the
+ kernel at boot time.)
+
+
config SERIAL_AMBA_PL010
tristate "ARM AMBA PL010 serial port support"
depends on ARM_AMBA && (BROKEN || !ARCH_VERSATILE)
Index: linux-2.6.23.16/drivers/serial/Makefile
===================================================================
--- linux-2.6.23.16.orig/drivers/serial/Makefile 2008-03-15 17:59:22.566564448 +0200
+++ linux-2.6.23.16/drivers/serial/Makefile 2008-03-15 17:59:53.568330991 +0200
@@ -62,5 +62,7 @@
obj-$(CONFIG_SERIAL_ATMEL) += atmel_serial.o
obj-$(CONFIG_SERIAL_UARTLITE) += uartlite.o
obj-$(CONFIG_SERIAL_NETX) += netx-serial.o
+obj-$(CONFIG_SERIAL_IT8712) += it8712.o
+obj-$(CONFIG_SERIAL_SL2312) += serial_sl2312.o
obj-$(CONFIG_SERIAL_OF_PLATFORM) += of_serial.o
obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o
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