diff options
Diffstat (limited to 'drivers/serial/sh-sci.c')
| -rw-r--r-- | drivers/serial/sh-sci.c | 1675 |
1 files changed, 0 insertions, 1675 deletions
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c deleted file mode 100644 index a9e07075962..00000000000 --- a/drivers/serial/sh-sci.c +++ /dev/null @@ -1,1675 +0,0 @@ -/* - * drivers/serial/sh-sci.c - * - * SuperH on-chip serial module support. (SCI with no FIFO / with FIFO) - * - * Copyright (C) 2002, 2003, 2004 Paul Mundt - * - * based off of the old drivers/char/sh-sci.c by: - * - * Copyright (C) 1999, 2000 Niibe Yutaka - * Copyright (C) 2000 Sugioka Toshinobu - * Modified to support multiple serial ports. Stuart Menefy (May 2000). - * Modified to support SecureEdge. David McCullough (2002) - * Modified to support SH7300 SCIF. Takashi Kusuda (Jun 2003). - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - */ - -#undef DEBUG - -#include <linux/config.h> -#include <linux/module.h> -#include <linux/errno.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/timer.h> -#include <linux/interrupt.h> -#include <linux/tty.h> -#include <linux/tty_flip.h> -#include <linux/serial.h> -#include <linux/major.h> -#include <linux/string.h> -#include <linux/sysrq.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/delay.h> -#include <linux/console.h> -#include <linux/bitops.h> - -#ifdef CONFIG_CPU_FREQ -#include <linux/notifier.h> -#include <linux/cpufreq.h> -#endif - -#include <asm/system.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/uaccess.h> - -#include <linux/generic_serial.h> - -#ifdef CONFIG_SH_STANDARD_BIOS -#include <asm/sh_bios.h> -#endif - -#if defined(CONFIG_SERIAL_SH_SCI_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) -#define SUPPORT_SYSRQ -#endif - -#include "sh-sci.h" - -#ifdef CONFIG_SH_KGDB -#include <asm/kgdb.h> - -static int kgdb_get_char(struct sci_port *port); -static void kgdb_put_char(struct sci_port *port, char c); -static void kgdb_handle_error(struct sci_port *port); -static struct sci_port *kgdb_sci_port; -#endif /* CONFIG_SH_KGDB */ - -#ifdef CONFIG_SERIAL_SH_SCI_CONSOLE -static struct sci_port *serial_console_port = 0; -#endif /* CONFIG_SERIAL_SH_SCI_CONSOLE */ - -/* Function prototypes */ -static void sci_stop_tx(struct uart_port *port); -static void sci_start_tx(struct uart_port *port); -static void sci_start_rx(struct uart_port *port, unsigned int tty_start); -static void sci_stop_rx(struct uart_port *port); -static int sci_request_irq(struct sci_port *port); -static void sci_free_irq(struct sci_port *port); - -static struct sci_port sci_ports[SCI_NPORTS]; -static struct uart_driver sci_uart_driver; - -#if defined(CONFIG_SH_STANDARD_BIOS) || defined(CONFIG_SH_KGDB) - -static void handle_error(struct uart_port *port) -{ /* Clear error flags */ - sci_out(port, SCxSR, SCxSR_ERROR_CLEAR(port)); -} - -static int get_char(struct uart_port *port) -{ - unsigned long flags; - unsigned short status; - int c; - - local_irq_save(flags); - do { - status = sci_in(port, SCxSR); - if (status & SCxSR_ERRORS(port)) { - handle_error(port); - continue; - } - } while (!(status & SCxSR_RDxF(port))); - c = sci_in(port, SCxRDR); - sci_in(port, SCxSR); /* Dummy read */ - sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port)); - local_irq_restore(flags); - - return c; -} - -/* Taken from sh-stub.c of GDB 4.18 */ -static const char hexchars[] = "0123456789abcdef"; - -static __inline__ char highhex(int x) -{ - return hexchars[(x >> 4) & 0xf]; -} - -static __inline__ char lowhex(int x) -{ - return hexchars[x & 0xf]; -} - -#endif /* CONFIG_SH_STANDARD_BIOS || CONFIG_SH_KGDB */ - -/* - * Send the packet in buffer. The host gets one chance to read it. - * This routine does not wait for a positive acknowledge. - */ - -#ifdef CONFIG_SERIAL_SH_SCI_CONSOLE -static void put_char(struct uart_port *port, char c) -{ - unsigned long flags; - unsigned short status; - - local_irq_save(flags); - - do { - status = sci_in(port, SCxSR); - } while (!(status & SCxSR_TDxE(port))); - - sci_out(port, SCxTDR, c); - sci_in(port, SCxSR); /* Dummy read */ - sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port)); - - local_irq_restore(flags); -} - -static void put_string(struct sci_port *sci_port, const char *buffer, int count) -{ - struct uart_port *port = &sci_port->port; - const unsigned char *p = buffer; - int i; - -#if defined(CONFIG_SH_STANDARD_BIOS) || defined(CONFIG_SH_KGDB) - int checksum; - int usegdb=0; - -#ifdef CONFIG_SH_STANDARD_BIOS - /* This call only does a trap the first time it is - * called, and so is safe to do here unconditionally - */ - usegdb |= sh_bios_in_gdb_mode(); -#endif -#ifdef CONFIG_SH_KGDB - usegdb |= (kgdb_in_gdb_mode && (port == kgdb_sci_port)); -#endif - - if (usegdb) { - /* $<packet info>#<checksum>. */ - do { - unsigned char c; - put_char(port, '$'); - put_char(port, 'O'); /* 'O'utput to console */ - checksum = 'O'; - - for (i=0; i<count; i++) { /* Don't use run length encoding */ - int h, l; - - c = *p++; - h = highhex(c); - l = lowhex(c); - put_char(port, h); - put_char(port, l); - checksum += h + l; - } - put_char(port, '#'); - put_char(port, highhex(checksum)); - put_char(port, lowhex(checksum)); - } while (get_char(port) != '+'); - } else -#endif /* CONFIG_SH_STANDARD_BIOS || CONFIG_SH_KGDB */ - for (i=0; i<count; i++) { - if (*p == 10) - put_char(port, '\r'); - put_char(port, *p++); - } -} -#endif /* CONFIG_SERIAL_SH_SCI_CONSOLE */ - - -#ifdef CONFIG_SH_KGDB - -/* Is the SCI ready, ie is there a char waiting? */ -static int kgdb_is_char_ready(struct sci_port *port) -{ - unsigned short status = sci_in(port, SCxSR); - - if (status & (SCxSR_ERRORS(port) | SCxSR_BRK(port))) - kgdb_handle_error(port); - - return (status & SCxSR_RDxF(port)); -} - -/* Write a char */ -static void kgdb_put_char(struct sci_port *port, char c) -{ - unsigned short status; - - do - status = sci_in(port, SCxSR); - while (!(status & SCxSR_TDxE(port))); - - sci_out(port, SCxTDR, c); - sci_in(port, SCxSR); /* Dummy read */ - sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port)); -} - -/* Get a char if there is one, else ret -1 */ -static int kgdb_get_char(struct sci_port *port) -{ - int c; - - if (kgdb_is_char_ready(port) == 0) - c = -1; - else { - c = sci_in(port, SCxRDR); - sci_in(port, SCxSR); /* Dummy read */ - sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port)); - } - - return c; -} - -/* Called from kgdbstub.c to get a character, i.e. is blocking */ -static int kgdb_sci_getchar(void) -{ - volatile int c; - - /* Keep trying to read a character, this could be neater */ - while ((c = kgdb_get_char(kgdb_sci_port)) < 0); - - return c; -} - -/* Called from kgdbstub.c to put a character, just a wrapper */ -static void kgdb_sci_putchar(int c) -{ - - kgdb_put_char(kgdb_sci_port, c); -} - -/* Clear any errors on the SCI */ -static void kgdb_handle_error(struct sci_port *port) -{ - sci_out(port, SCxSR, SCxSR_ERROR_CLEAR(port)); /* Clear error flags */ -} - -/* Breakpoint if there's a break sent on the serial port */ -static void kgdb_break_interrupt(int irq, void *ptr, struct pt_regs *regs) -{ - struct sci_port *port = ptr; - unsigned short status = sci_in(port, SCxSR); - - if (status & SCxSR_BRK(port)) { - - /* Break into the debugger if a break is detected */ - BREAKPOINT(); - - /* Clear */ - sci_out(port, SCxSR, SCxSR_BREAK_CLEAR(port)); - } -} - -#endif /* CONFIG_SH_KGDB */ - -#if defined(__H8300S__) -enum { sci_disable, sci_enable }; - -static void h8300_sci_enable(struct uart_port* port, unsigned int ctrl) -{ - volatile unsigned char *mstpcrl=(volatile unsigned char *)MSTPCRL; - int ch = (port->mapbase - SMR0) >> 3; - unsigned char mask = 1 << (ch+1); - - if (ctrl == sci_disable) { - *mstpcrl |= mask; - } else { - *mstpcrl &= ~mask; - } -} -#endif - -#if defined(SCI_ONLY) || defined(SCI_AND_SCIF) -#if defined(__H8300H__) || defined(__H8300S__) -static void sci_init_pins_sci(struct uart_port* port, unsigned int cflag) -{ - int ch = (port->mapbase - SMR0) >> 3; - - /* set DDR regs */ - H8300_GPIO_DDR(h8300_sci_pins[ch].port,h8300_sci_pins[ch].rx,H8300_GPIO_INPUT); - H8300_GPIO_DDR(h8300_sci_pins[ch].port,h8300_sci_pins[ch].tx,H8300_GPIO_OUTPUT); - /* tx mark output*/ - H8300_SCI_DR(ch) |= h8300_sci_pins[ch].tx; -} -#else -static void sci_init_pins_sci(struct uart_port *port, unsigned int cflag) -{ -} -#endif -#endif - -#if defined(SCIF_ONLY) || defined(SCI_AND_SCIF) -#if defined(CONFIG_CPU_SH3) -/* For SH7705, SH7707, SH7709, SH7709A, SH7729, SH7300*/ -static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag) -{ - unsigned int fcr_val = 0; -#if !defined(CONFIG_CPU_SUBTYPE_SH7300) /* SH7300 doesn't use RTS/CTS */ - { - unsigned short data; - - /* We need to set SCPCR to enable RTS/CTS */ - data = ctrl_inw(SCPCR); - /* Clear out SCP7MD1,0, SCP6MD1,0, SCP4MD1,0*/ - ctrl_outw(data&0x0fcf, SCPCR); - } - if (cflag & CRTSCTS) - fcr_val |= SCFCR_MCE; - else { - unsigned short data; - - /* We need to set SCPCR to enable RTS/CTS */ - data = ctrl_inw(SCPCR); - /* Clear out SCP7MD1,0, SCP4MD1,0, - Set SCP6MD1,0 = {01} (output) */ - ctrl_outw((data&0x0fcf)|0x1000, SCPCR); - - data = ctrl_inb(SCPDR); - /* Set /RTS2 (bit6) = 0 */ - ctrl_outb(data&0xbf, SCPDR); - } -#endif - sci_out(port, SCFCR, fcr_val); -} - -static void sci_init_pins_irda(struct uart_port *port, unsigned int cflag) -{ - unsigned int fcr_val = 0; - - if (cflag & CRTSCTS) - fcr_val |= SCFCR_MCE; - - sci_out(port, SCFCR, fcr_val); -} - -#else - -/* For SH7750 */ -static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag) -{ - unsigned int fcr_val = 0; - - if (cflag & CRTSCTS) { - fcr_val |= SCFCR_MCE; - } else { - ctrl_outw(0x0080, SCSPTR2); /* Set RTS = 1 */ - } - sci_out(port, SCFCR, fcr_val); -} - -#endif -#endif /* SCIF_ONLY || SCI_AND_SCIF */ - -/* ********************************************************************** * - * the interrupt related routines * - * ********************************************************************** */ - -static void sci_transmit_chars(struct uart_port *port) -{ - struct circ_buf *xmit = &port->info->xmit; - unsigned int stopped = uart_tx_stopped(port); - unsigned long flags; - unsigned short status; - unsigned short ctrl; - int count, txroom; - - status = sci_in(port, SCxSR); - if (!(status & SCxSR_TDxE(port))) { - local_irq_save(flags); - ctrl = sci_in(port, SCSCR); - if (uart_circ_empty(xmit)) { - ctrl &= ~SCI_CTRL_FLAGS_TIE; - } else { - ctrl |= SCI_CTRL_FLAGS_TIE; - } - sci_out(port, SCSCR, ctrl); - local_irq_restore(flags); - return; - } - -#if !defined(SCI_ONLY) - if (port->type == PORT_SCIF) { - txroom = SCIF_TXROOM_MAX - (sci_in(port, SCFDR)>>8); - } else { - txroom = (sci_in(port, SCxSR) & SCI_TDRE)?1:0; - } -#else - txroom = (sci_in(port, SCxSR) & SCI_TDRE)?1:0; -#endif - - count = txroom; - - do { - unsigned char c; - - if (port->x_char) { - c = port->x_char; - port->x_char = 0; - } else if (!uart_circ_empty(xmit) && !stopped) { - c = xmit->buf[xmit->tail]; - xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); - } else { - break; - } - - sci_out(port, SCxTDR, c); - - port->icount.tx++; - } while (--count > 0); - - sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port)); - - if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) - uart_write_wakeup(port); - if (uart_circ_empty(xmit)) { - sci_stop_tx(port); - } else { - local_irq_save(flags); - ctrl = sci_in(port, SCSCR); - -#if !defined(SCI_ONLY) - if (port->type == PORT_SCIF) { - sci_in(port, SCxSR); /* Dummy read */ - sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port)); - } -#endif - - ctrl |= SCI_CTRL_FLAGS_TIE; - sci_out(port, SCSCR, ctrl); - local_irq_restore(flags); - } -} - -/* On SH3, SCIF may read end-of-break as a space->mark char */ -#define STEPFN(c) ({int __c=(c); (((__c-1)|(__c)) == -1); }) - -static inline void sci_receive_chars(struct uart_port *port, - struct pt_regs *regs) -{ - struct tty_struct *tty = port->info->tty; - int i, count, copied = 0; - unsigned short status; - unsigned char flag; - - status = sci_in(port, SCxSR); - if (!(status & SCxSR_RDxF(port))) - return; - - while (1) { -#if !defined(SCI_ONLY) - if (port->type == PORT_SCIF) { - count = sci_in(port, SCFDR)&SCIF_RFDC_MASK ; - } else { - count = (sci_in(port, SCxSR)&SCxSR_RDxF(port))?1:0; - } -#else - count = (sci_in(port, SCxSR)&SCxSR_RDxF(port))?1:0; -#endif - - /* Don't copy more bytes than there is room for in the buffer */ - count = tty_buffer_request_room(tty, count); - - /* If for any reason we can't copy more data, we're done! */ - if (count == 0) - break; - - if (port->type == PORT_SCI) { - char c = sci_in(port, SCxRDR); - if(((struct sci_port *)port)->break_flag - || uart_handle_sysrq_char(port, c, regs)) { - count = 0; - } else { - tty_insert_flip_char(tty, c, TTY_NORMAL); - } - } else { - for (i=0; i<count; i++) { - char c = sci_in(port, SCxRDR); - status = sci_in(port, SCxSR); -#if defined(CONFIG_CPU_SH3) - /* Skip "chars" during break */ - if (((struct sci_port *)port)->break_flag) { - if ((c == 0) && - (status & SCxSR_FER(port))) { - count--; i--; - continue; - } - /* Nonzero => end-of-break */ - pr_debug("scif: debounce<%02x>\n", c); - ((struct sci_port *)port)->break_flag = 0; - if (STEPFN(c)) { - count--; i--; - continue; - } - } -#endif /* CONFIG_CPU_SH3 */ - if (uart_handle_sysrq_char(port, c, regs)) { - count--; i--; - continue; - } - - /* Store data and status */ - if (status&SCxSR_FER(port)) { - flag = TTY_FRAME; - pr_debug("sci: frame error\n"); - } else if (status&SCxSR_PER(port)) { - flag = TTY_PARITY; - pr_debug("sci: parity error\n"); - } else - flag = TTY_NORMAL; - tty_insert_flip_char(tty, c, flag); - } - } - - sci_in(port, SCxSR); /* dummy read */ - sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port)); - - copied += count; - port->icount.rx += count; - } - - if (copied) { - /* Tell the rest of the system the news. New characters! */ - tty_flip_buffer_push(tty); - } else { - sci_in(port, SCxSR); /* dummy read */ - sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port)); - } -} - -#define SCI_BREAK_JIFFIES (HZ/20) -/* The sci generates interrupts during the break, - * 1 per millisecond or so during the break period, for 9600 baud. - * So dont bother disabling interrupts. - * But dont want more than 1 break event. - * Use a kernel timer to periodically poll the rx line until - * the break is finished. - */ -static void sci_schedule_break_timer(struct sci_port *port) -{ - port->break_timer.expires = jiffies + SCI_BREAK_JIFFIES; - add_timer(&port->break_timer); -} -/* Ensure that two consecutive samples find the break over. */ -static void sci_break_timer(unsigned long data) -{ - struct sci_port * port = (struct sci_port *)data; - if(sci_rxd_in(&port->port) == 0) { - port->break_flag = 1; - sci_schedule_break_timer(port); - } else if(port->break_flag == 1){ - /* break is over. */ - port->break_flag = 2; - sci_schedule_break_timer(port); - } else port->break_flag = 0; -} - -static inline int sci_handle_errors(struct uart_port *port) -{ - int copied = 0; - unsigned short status = sci_in(port, SCxSR); - struct tty_struct *tty = port->info->tty; - - if (status&SCxSR_ORER(port)) { - /* overrun error */ - if(tty_insert_flip_char(tty, 0, TTY_OVERRUN)) - copied++; - pr_debug("sci: overrun error\n"); - } - - if (status&SCxSR_FER(port)) { - if (sci_rxd_in(port) == 0) { - /* Notify of BREAK */ - struct sci_port * sci_port = (struct sci_port *)port; - if(!sci_port->break_flag) { - sci_port->break_flag = 1; - sci_schedule_break_timer((struct sci_port *)port); - /* Do sysrq handling. */ - if(uart_handle_break(port)) - return 0; - pr_debug("sci: BREAK detected\n"); - if(tty_insert_flip_char(tty, 0, TTY_BREAK)) - copied++; - } - } - else { - /* frame error */ - if(tty_insert_flip_char(tty, 0, TTY_FRAME)) - copied++; - pr_debug("sci: frame error\n"); - } - } - - if (status&SCxSR_PER(port)) { - if(tty_insert_flip_char(tty, 0, TTY_PARITY)) - copied++; - /* parity error */ - pr_debug("sci: parity error\n"); - } - - if (copied) - tty_flip_buffer_push(tty); - - return copied; -} - -static inline int sci_handle_breaks(struct uart_port *port) -{ - int copied = 0; - unsigned short status = sci_in(port, SCxSR); - struct tty_struct *tty = port->info->tty; - struct sci_port *s = &sci_ports[port->line]; - - if (!s->break_flag && status & SCxSR_BRK(port)) -#if defined(CONFIG_CPU_SH3) - /* Debounce break */ - s->break_flag = 1; -#endif - /* Notify of BREAK */ - if(tty_insert_flip_char(tty, 0, TTY_BREAK)) - copied++; - pr_debug("sci: BREAK detected\n"); - } - -#if defined(SCIF_ORER) - /* XXX: Handle SCIF overrun error */ - if (port->type == PORT_SCIF && (sci_in(port, SCLSR) & SCIF_ORER) != 0) { - sci_out(port, SCLSR, 0); - if(tty_insert_flip_char(tty, 0, TTY_OVERRUN)) { - copied++; - pr_debug("sci: overrun error\n"); - } - } -#endif - - if (copied) - tty_flip_buffer_push(tty); - return copied; -} - -static irqreturn_t sci_rx_interrupt(int irq, void *ptr, struct pt_regs *regs) -{ - struct uart_port *port = ptr; - - /* I think sci_receive_chars has to be called irrespective - * of whether the I_IXOFF is set, otherwise, how is the interrupt - * to be disabled? - */ - sci_receive_chars(port, regs); - - return IRQ_HANDLED; -} - -static irqreturn_t sci_tx_interrupt(int irq, void *ptr, struct pt_regs *regs) -{ - struct uart_port *port = ptr; - - sci_transmit_chars(port); - - return IRQ_HANDLED; -} - -static irqreturn_t sci_er_interrupt(int irq, void *ptr, struct pt_regs *regs) -{ - struct uart_port *port = ptr; - - /* Handle errors */ - if (port->type == PORT_SCI) { - if (sci_handle_errors(port)) { - /* discard character in rx buffer */ - sci_in(port, SCxSR); - sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port)); - } - } else { -#if defined(SCIF_ORER) - if((sci_in(port, SCLSR) & SCIF_ORER) != 0) { - struct tty_struct *tty = port->info->tty; - - sci_out(port, SCLSR, 0); - tty_insert_flip_char(tty, 0, TTY_OVERRUN); - tty_flip_buffer_push(tty); - pr_debug("scif: overrun error\n"); - } -#endif - sci_rx_interrupt(irq, ptr, regs); - } - - sci_out(port, SCxSR, SCxSR_ERROR_CLEAR(port)); - - /* Kick the transmission */ - sci_tx_interrupt(irq, ptr, regs); - - return IRQ_HANDLED; -} - -static irqreturn_t sci_br_interrupt(int irq, void *ptr, struct pt_regs *regs) -{ - struct uart_port *port = ptr; - - /* Handle BREAKs */ - sci_handle_breaks(port); - sci_out(port, SCxSR, SCxSR_BREAK_CLEAR(port)); - - return IRQ_HANDLED; -} - -static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr, struct pt_regs *regs) -{ - unsigned short ssr_status, scr_status; - struct uart_port *port = ptr; - - ssr_status = sci_in(port,SCxSR); - scr_status = sci_in(port,SCSCR); - - /* Tx Interrupt */ - if ((ssr_status&0x0020) && (scr_status&0x0080)) - sci_tx_interrupt(irq, ptr, regs); - /* Rx Interrupt */ - if ((ssr_status&0x0002) && (scr_status&0x0040)) - sci_rx_interrupt(irq, ptr, regs); - /* Error Interrupt */ - if ((ssr_status&0x0080) && (scr_status&0x0400)) - sci_er_interrupt(irq, ptr, regs); - /* Break Interrupt */ - if ((ssr_status&0x0010) && (scr_status&0x0200)) - sci_br_interrupt(irq, ptr, regs); - - return IRQ_HANDLED; -} - -#ifdef CONFIG_CPU_FREQ -/* - * Here we define a transistion notifier so that we can update all of our - * ports' baud rate when the peripheral clock changes. - */ -static int sci_notifier(struct notifier_block *self, unsigned long phase, void *p) -{ - struct cpufreq_freqs *freqs = p; - int i; - - if ((phase == CPUFREQ_POSTCHANGE) || - (phase == CPUFREQ_RESUMECHANGE)){ - for (i = 0; i < SCI_NPORTS; i++) { - struct uart_port *port = &sci_ports[i].port; - - /* - * Update the uartclk per-port if frequency has - * changed, since it will no longer necessarily be - * consistent with the old frequency. - * - * Really we want to be able to do something like - * uart_change_speed() or something along those lines - * here to implicitly reset the per-port baud rate.. - * - * Clean this up later.. - */ - port->uartclk = current_cpu_data.module_clock * 16; - } - - printk("%s: got a postchange notification for cpu %d (old %d, new %d)\n", - __FUNCTION__, freqs->cpu, freqs->old, freqs->new); - } - - return NOTIFY_OK; -} - -static struct notifier_block sci_nb = { &sci_notifier, NULL, 0 }; -#endif /* CONFIG_CPU_FREQ */ - -static int sci_request_irq(struct sci_port *port) -{ - int i; - irqreturn_t (*handlers[4])(int irq, void *ptr, struct pt_regs *regs) = { - sci_er_interrupt, sci_rx_interrupt, sci_tx_interrupt, - sci_br_interrupt, - }; - const char *desc[] = { "SCI Receive Error", "SCI Receive Data Full", - "SCI Transmit Data Empty", "SCI Break" }; - - if (port->irqs[0] == port->irqs[1]) { - if (!port->irqs[0]) { - printk(KERN_ERR "sci: Cannot allocate irq.(IRQ=0)\n"); - return -ENODEV; - } - if (request_irq(port->irqs[0], sci_mpxed_interrupt, SA_INTERRUPT, - "sci", port)) { - printk(KERN_ERR "sci: Cannot allocate irq.\n"); - return -ENODEV; - } - } else { - for (i = 0; i < ARRAY_SIZE(handlers); i++) { - if (!port->irqs[i]) - continue; - if (request_irq(port->irqs[i], handlers[i], SA_INTERRUPT, - desc[i], port)) { - printk(KERN_ERR "sci: Cannot allocate irq.\n"); - return -ENODEV; - } - } - } - - return 0; -} - -static void sci_free_irq(struct sci_port *port) -{ - int i; - - if (port->irqs[0] == port->irqs[1]) { - if (!port->irqs[0]) - printk("sci: sci_free_irq error\n"); - else - free_irq(port->irqs[0], port); - } else { - for (i = 0; i < ARRAY_SIZE(port->irqs); i++) { - if (!port->irqs[i]) - continue; - - free_irq(port->irqs[i], port); - } - } -} - -static unsigned int sci_tx_empty(struct uart_port *port) -{ - /* Can't detect */ - return TIOCSER_TEMT; -} - -static void sci_set_mctrl(struct uart_port *port, unsigned int mctrl) -{ - /* This routine is used for seting signals of: DTR, DCD, CTS/RTS */ - /* We use SCIF's hardware for CTS/RTS, so don't need any for that. */ - /* If you have signals for DTR and DCD, please implement here. */ -} - -static unsigned int sci_get_mctrl(struct uart_port *port) -{ - /* This routine is used for geting signals of: DTR, DCD, DSR, RI, - and CTS/RTS */ - - return TIOCM_DTR | TIOCM_RTS | TIOCM_DSR; -} - -static void sci_start_tx(struct uart_port *port) -{ - struct sci_port *s = &sci_ports[port->line]; - - disable_irq(s->irqs[SCIx_TXI_IRQ]); - sci_transmit_chars(port); - enable_irq(s->irqs[SCIx_TXI_IRQ]); -} - -static void sci_stop_tx(struct uart_port *port) -{ - unsigned long flags; - unsigned short ctrl; - - /* Clear TIE (Transmit Interrupt Enable) bit in SCSCR */ - local_irq_save(flags); - ctrl = sci_in(port, SCSCR); - ctrl &= ~SCI_CTRL_FLAGS_TIE; - sci_out(port, SCSCR, ctrl); - local_irq_restore(flags); -} - -static void sci_start_rx(struct uart_port *port, unsigned int tty_start) -{ - unsigned long flags; - unsigned short ctrl; - - /* Set RIE (Receive Interrupt Enable) bit in SCSCR */ - local_irq_save(flags); - ctrl = sci_in(port, SCSCR); - ctrl |= SCI_CTRL_FLAGS_RIE | SCI_CTRL_FLAGS_REIE; - sci_out(port, SCSCR, ctrl); - local_irq_restore(flags); -} - -static void sci_stop_rx(struct uart_port *port) -{ - unsigned long flags; - unsigned short ctrl; - - /* Clear RIE (Receive Interrupt Enable) bit in SCSCR */ - local_irq_save(flags); - ctrl = sci_in(port, SCSCR); - ctrl &= ~(SCI_CTRL_FLAGS_RIE | SCI_CTRL_FLAGS_REIE); - sci_out(port, SCSCR, ctrl); - local_irq_restore(flags); -} - -static void sci_enable_ms(struct uart_port *port) -{ - /* Nothing here yet .. */ -} - -static void sci_break_ctl(struct uart_port *port, int break_state) -{ - /* Nothing here yet .. */ -} - -static int sci_startup(struct uart_port *port) -{ - struct sci_port *s = &sci_ports[port->line]; - -#if defined(__H8300S__) - h8300_sci_enable(port, sci_enable); -#endif - - sci_request_irq(s); - sci_start_tx(port); - sci_start_rx(port, 1); - - return 0; -} - -static void sci_shutdown(struct uart_port *port) -{ - struct sci_port *s = &sci_ports[port->line]; - - sci_stop_rx(port); - sci_stop_tx(port); - sci_free_irq(s); - -#if defined(__H8300S__) - h8300_sci_enable(port, sci_disable); -#endif -} - -static void sci_set_termios(struct uart_port *port, struct termios *termios, - struct termios *old) -{ - struct sci_port *s = &sci_ports[port->line]; - unsigned int status, baud, smr_val; - unsigned long flags; - int t; - - baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16); - - spin_lock_irqsave(&port->lock, flags); - - do { - status = sci_in(port, SCxSR); - } while (!(status & SCxSR_TEND(port))); - - sci_out(port, SCSCR, 0x00); /* TE=0, RE=0, CKE1=0 */ - -#if !defined(SCI_ONLY) - if (port->type == PORT_SCIF) { - sci_out(port, SCFCR, SCFCR_RFRST | SCFCR_TFRST); - } -#endif - - smr_val = sci_in(port, SCSMR) & 3; - if ((termios->c_cflag & CSIZE) == CS7) - smr_val |= 0x40; - if (termios->c_cflag & PARENB) - smr_val |= 0x20; - if (termios->c_cflag & PARODD) - smr_val |= 0x30; - if (termios->c_cflag & CSTOPB) - smr_val |= 0x08; - - uart_update_timeout(port, termios->c_cflag, baud); - - sci_out(port, SCSMR, smr_val); - - switch (baud) { - case 0: t = -1; break; - case 2400: t = BPS_2400; break; - case 4800: t = BPS_4800; break; - case 9600: t = BPS_9600; break; - case 19200: t = BPS_19200; break; - case 38400: t = BPS_38400; break; - case 57600: t = BPS_57600; break; - case 115200: t = BPS_115200; break; - default: t = SCBRR_VALUE(baud); break; - } - - if (t > 0) { - if(t >= 256) { - sci_out(port, SCSMR, (sci_in(port, SCSMR) & ~3) | 1); - t >>= 2; - } else { - sci_out(port, SCSMR, sci_in(port, SCSMR) & ~3); - } - sci_out(port, SCBRR, t); - udelay((1000000+(baud-1)) / baud); /* Wait one bit interval */ - } - - s->init_pins(port, termios->c_cflag); - sci_out(port, SCSCR, SCSCR_INIT(port)); - - if ((termios->c_cflag & CREAD) != 0) - sci_start_rx(port,0); - - spin_unlock_irqrestore(&port->lock, flags); -} - -static const char *sci_type(struct uart_port *port) -{ - switch (port->type) { - case PORT_SCI: return "sci"; - case PORT_SCIF: return "scif"; - case PORT_IRDA: return "irda"; - } - - return 0; -} - -static void sci_release_port(struct uart_port *port) -{ - /* Nothing here yet .. */ -} - -static int sci_request_port(struct uart_port *port) -{ - /* Nothing here yet .. */ - return 0; -} - -static void sci_config_port(struct uart_port *port, int flags) -{ - struct sci_port *s = &sci_ports[port->line]; - - port->type = s->type; - -#if defined(CONFIG_CPU_SUBTYPE_SH5_101) || defined(CONFIG_CPU_SUBTYPE_SH5_103) - if (port->mapbase == 0) - port->mapbase = onchip_remap(SCIF_ADDR_SH5, 1024, "SCIF"); - - port->membase = (void *)port->mapbase; -#endif -} - -static int sci_verify_port(struct uart_port *port, struct serial_struct *ser) -{ - struct sci_port *s = &sci_ports[port->line]; - - if (ser->irq != s->irqs[SCIx_TXI_IRQ] || ser->irq > NR_IRQS) - return -EINVAL; - if (ser->baud_base < 2400) - /* No paper tape reader for Mitch.. */ - return -EINVAL; - - return 0; -} - -static struct uart_ops sci_uart_ops = { - .tx_empty = sci_tx_empty, - .set_mctrl = sci_set_mctrl, - .get_mctrl = sci_get_mctrl, - .start_tx = sci_start_tx, - .stop_tx = sci_stop_tx, - .stop_rx = sci_stop_rx, - .enable_ms = sci_enable_ms, - .break_ctl = sci_break_ctl, - .startup = sci_startup, - .shutdown = sci_shutdown, - .set_termios = sci_set_termios, - .type = sci_type, - .release_port = sci_release_port, - .request_port = sci_request_port, - .config_port = sci_config_port, - .verify_port = sci_verify_port, -}; - -static struct sci_port sci_ports[SCI_NPORTS] = { -#if defined(CONFIG_CPU_SUBTYPE_SH7708) - { - .port = { - .membase = (void *)0xfffffe80, - .mapbase = 0xfffffe80, - .iotype = SERIAL_IO_MEM, - .irq = 25, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 0, - }, - .type = PORT_SCI, - .irqs = SCI_IRQS, - .init_pins = sci_init_pins_sci, - }, -#elif defined(CONFIG_CPU_SUBTYPE_SH7705) - { - .port = { - .membase = (void *)SCIF0, - .mapbase = SCIF0, - .iotype = SERIAL_IO_MEM, - .irq = 55, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 0, - }, - .type = PORT_SCIF, - .irqs = SH3_IRDA_IRQS, - .init_pins = sci_init_pins_scif, - }, - { - .port = { - .membase = (void *)SCIF2, - .mapbase = SCIF2, - .iotype = SERIAL_IO_MEM, - .irq = 59, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 1, - }, - .type = PORT_SCIF, - .irqs = SH3_SCIF_IRQS, - .init_pins = sci_init_pins_scif, - } -#elif defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7709) - { - .port = { - .membase = (void *)0xfffffe80, - .mapbase = 0xfffffe80, - .iotype = SERIAL_IO_MEM, - .irq = 25, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 0, - }, - .type = PORT_SCI, - .irqs = SCI_IRQS, - .init_pins = sci_init_pins_sci, - }, - { - .port = { - .membase = (void *)0xa4000150, - .mapbase = 0xa4000150, - .iotype = SERIAL_IO_MEM, - .irq = 59, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 1, - }, - .type = PORT_SCIF, - .irqs = SH3_SCIF_IRQS, - .init_pins = sci_init_pins_scif, - }, - { - .port = { - .membase = (void *)0xa4000140, - .mapbase = 0xa4000140, - .iotype = SERIAL_IO_MEM, - .irq = 55, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 2, - }, - .type = PORT_IRDA, - .irqs = SH3_IRDA_IRQS, - .init_pins = sci_init_pins_irda, - } -#elif defined(CONFIG_CPU_SUBTYPE_SH7300) - { - .port = { - .membase = (void *)0xA4430000, - .mapbase = 0xA4430000, - .iotype = SERIAL_IO_MEM, - .irq = 25, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 0, - }, - .type = PORT_SCIF, - .irqs = SH7300_SCIF0_IRQS, - .init_pins = sci_init_pins_scif, - }, -#elif defined(CONFIG_CPU_SUBTYPE_SH73180) - { - .port = { - .membase = (void *)0xffe00000, - .mapbase = 0xffe00000, - .iotype = SERIAL_IO_MEM, - .irq = 25, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 0, - }, - .type = PORT_SCIF, - .irqs = SH73180_SCIF_IRQS, - .init_pins = sci_init_pins_scif, - }, -#elif defined(CONFIG_SH_RTS7751R2D) - { - .port = { - .membase = (void *)0xffe80000, - .mapbase = 0xffe80000, - .iotype = SERIAL_IO_MEM, - .irq = 43, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 0, - }, - .type = PORT_SCIF, - .irqs = SH4_SCIF_IRQS, - .init_pins = sci_init_pins_scif, - }, -#elif defined(CONFIG_CPU_SUBTYPE_SH7750) || defined(CONFIG_CPU_SUBTYPE_SH7751) - { - .port = { - .membase = (void *)0xffe00000, - .mapbase = 0xffe00000, - .iotype = SERIAL_IO_MEM, - .irq = 25, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 0, - }, - .type = PORT_SCI, - .irqs = SCI_IRQS, - .init_pins = sci_init_pins_sci, - }, - { - .port = { - .membase = (void *)0xffe80000, - .mapbase = 0xffe80000, - .iotype = SERIAL_IO_MEM, - .irq = 43, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 1, - }, - .type = PORT_SCIF, - .irqs = SH4_SCIF_IRQS, - .init_pins = sci_init_pins_scif, - }, -#elif defined(CONFIG_CPU_SUBTYPE_SH7760) - { - .port = { - .membase = (void *)0xfe600000, - .mapbase = 0xfe600000, - .iotype = SERIAL_IO_MEM, - .irq = 55, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 0, - }, - .type = PORT_SCIF, - .irqs = SH7760_SCIF0_IRQS, - .init_pins = sci_init_pins_scif, - }, - { - .port = { - .membase = (void *)0xfe610000, - .mapbase = 0xfe610000, - .iotype = SERIAL_IO_MEM, - .irq = 75, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 1, - }, - .type = PORT_SCIF, - .irqs = SH7760_SCIF1_IRQS, - .init_pins = sci_init_pins_scif, - }, - { - .port = { - .membase = (void *)0xfe620000, - .mapbase = 0xfe620000, - .iotype = SERIAL_IO_MEM, - .irq = 79, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 2, - }, - .type = PORT_SCIF, - .irqs = SH7760_SCIF2_IRQS, - .init_pins = sci_init_pins_scif, - }, -#elif defined(CONFIG_CPU_SUBTYPE_SH4_202) - { - .port = { - .membase = (void *)0xffe80000, - .mapbase = 0xffe80000, - .iotype = SERIAL_IO_MEM, - .irq = 43, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 0, - }, - .type = PORT_SCIF, - .irqs = SH4_SCIF_IRQS, - .init_pins = sci_init_pins_scif, - }, -#elif defined(CONFIG_CPU_SUBTYPE_ST40STB1) - { - .port = { - .membase = (void *)0xffe00000, - .mapbase = 0xffe00000, - .iotype = SERIAL_IO_MEM, - .irq = 26, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 0, - }, - .type = PORT_SCIF, - .irqs = STB1_SCIF1_IRQS, - .init_pins = sci_init_pins_scif, - }, - { - .port = { - .membase = (void *)0xffe80000, - .mapbase = 0xffe80000, - .iotype = SERIAL_IO_MEM, - .irq = 43, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 1, - }, - .type = PORT_SCIF, - .irqs = SH4_SCIF_IRQS, - .init_pins = sci_init_pins_scif, - }, -#elif defined(CONFIG_CPU_SUBTYPE_SH5_101) || defined(CONFIG_CPU_SUBTYPE_SH5_103) - { - .port = { - .iotype = SERIAL_IO_MEM, - .irq = 42, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 0, - }, - .type = PORT_SCIF, - .irqs = SH5_SCIF_IRQS, - .init_pins = sci_init_pins_scif, - }, -#elif defined(CONFIG_H83007) || defined(CONFIG_H83068) - { - .port = { - .membase = (void *)0x00ffffb0, - .mapbase = 0x00ffffb0, - .iotype = SERIAL_IO_MEM, - .irq = 54, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 0, - }, - .type = PORT_SCI, - .irqs = H8300H_SCI_IRQS0, - .init_pins = sci_init_pins_sci, - }, - { - .port = { - .membase = (void *)0x00ffffb8, - .mapbase = 0x00ffffb8, - .iotype = SERIAL_IO_MEM, - .irq = 58, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 1, - }, - .type = PORT_SCI, - .irqs = H8300H_SCI_IRQS1, - .init_pins = sci_init_pins_sci, - }, - { - .port = { - .membase = (void *)0x00ffffc0, - .mapbase = 0x00ffffc0, - .iotype = SERIAL_IO_MEM, - .irq = 62, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 2, - }, - .type = PORT_SCI, - .irqs = H8300H_SCI_IRQS2, - .init_pins = sci_init_pins_sci, - }, -#elif defined(CONFIG_H8S2678) - { - .port = { - .membase = (void *)0x00ffff78, - .mapbase = 0x00ffff78, - .iotype = SERIAL_IO_MEM, - .irq = 90, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 0, - }, - .type = PORT_SCI, - .irqs = H8S_SCI_IRQS0, - .init_pins = sci_init_pins_sci, - }, - { - .port = { - .membase = (void *)0x00ffff80, - .mapbase = 0x00ffff80, - .iotype = SERIAL_IO_MEM, - .irq = 94, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 1, - }, - .type = PORT_SCI, - .irqs = H8S_SCI_IRQS1, - .init_pins = sci_init_pins_sci, - }, - { - .port = { - .membase = (void *)0x00ffff88, - .mapbase = 0x00ffff88, - .iotype = SERIAL_IO_MEM, - .irq = 98, - .ops = &sci_uart_ops, - .flags = ASYNC_BOOT_AUTOCONF, - .line = 2, - }, - .type = PORT_SCI, - .irqs = H8S_SCI_IRQS2, - .init_pins = sci_init_pins_sci, - }, -#else -#error "CPU subtype not defined" -#endif -}; - -#ifdef CONFIG_SERIAL_SH_SCI_CONSOLE -/* - * Print a string to the serial port trying not to disturb - * any possible real use of the port... - */ -static void serial_console_write(struct console *co, const char *s, - unsigned count) -{ - put_string(serial_console_port, s, count); -} - -static int __init serial_console_setup(struct console *co, char *options) -{ - struct uart_port *port; - int baud = 115200; - int bits = 8; - int parity = 'n'; - int flow = 'n'; - int ret; - - if (co->index >= SCI_NPORTS) - co->index = 0; - - serial_console_port = &sci_ports[co->index]; - port = &serial_console_port->port; - port->type = serial_console_port->type; - -#ifdef CONFIG_SUPERH64 - /* This is especially needed on sh64 to remap the SCIF */ - sci_config_port(port, 0); -#endif - - /* - * We need to set the initial uartclk here, since otherwise it will - * only ever be setup at sci_init() time. - */ -#if !defined(__H8300H__) && !defined(__H8300S__) - port->uartclk = current_cpu_data.module_clock * 16; -#else - port->uartclk = CONFIG_CPU_CLOCK; -#endif -#if defined(__H8300S__) - h8300_sci_enable(port, sci_enable); -#endif - if (options) - uart_parse_options(options, &baud, &parity, &bits, &flow); - - ret = uart_set_options(port, co, baud, parity, bits, flow); -#if defined(__H8300H__) || defined(__H8300S__) - /* disable rx interrupt */ - if (ret == 0) - sci_stop_rx(port); -#endif - return ret; -} - -static struct console serial_console = { - .name = "ttySC", - .device = uart_console_device, - .write = serial_console_write, - .setup = serial_console_setup, - .flags = CON_PRINTBUFFER, - .index = -1, - .data = &sci_uart_driver, -}; - -static int __init sci_console_init(void) -{ - register_console(&serial_console); - return 0; -} - -console_initcall(sci_console_init); -#endif /* CONFIG_SERIAL_SH_SCI_CONSOLE */ - -#ifdef CONFIG_SH_KGDB -/* - * FIXME: Most of this can go away.. at the moment, we rely on - * arch/sh/kernel/setup.c to do the command line parsing for kgdb, though - * most of that can easily be done here instead. - * - * For the time being, just accept the values that were parsed earlier.. - */ -static void __init kgdb_console_get_options(struct uart_port *port, int *baud, - int *parity, int *bits) -{ - *baud = kgdb_baud; - *parity = tolower(kgdb_parity); - *bits = kgdb_bits - '0'; -} - -/* - * The naming here is somewhat misleading, since kgdb_console_setup() takes - * care of the early-on initialization for kgdb, regardless of whether we - * actually use kgdb as a console or not. - * - * On the plus side, this lets us kill off the old kgdb_sci_setup() nonsense. - */ -int __init kgdb_console_setup(struct console *co, char *options) -{ - struct uart_port *port = &sci_ports[kgdb_portnum].port; - int baud = 38400; - int bits = 8; - int parity = 'n'; - int flow = 'n'; - - if (co->index >= SCI_NPORTS || co->index != kgdb_portnum) - co->index = kgdb_portnum; - - if (options) - uart_parse_options(options, &baud, &parity, &bits, &flow); - else - kgdb_console_get_options(port, &baud, &parity, &bits); - - kgdb_getchar = kgdb_sci_getchar; - kgdb_putchar = kgdb_sci_putchar; - - return uart_set_options(port, co, baud, parity, bits, flow); -} -#endif /* CONFIG_SH_KGDB */ - -#ifdef CONFIG_SH_KGDB_CONSOLE -static struct console kgdb_console = { - .name = "ttySC", - .write = kgdb_console_write, - .setup = kgdb_console_setup, - .flags = CON_PRINTBUFFER | CON_ENABLED, - .index = -1, - .data = &sci_uart_driver, -}; - -/* Register the KGDB console so we get messages (d'oh!) */ -static int __init kgdb_console_init(void) -{ - register_console(&kgdb_console); - return 0; -} - -console_initcall(kgdb_console_init); -#endif /* CONFIG_SH_KGDB_CONSOLE */ - -#if defined(CONFIG_SH_KGDB_CONSOLE) -#define SCI_CONSOLE &kgdb_console -#elif defined(CONFIG_SERIAL_SH_SCI_CONSOLE) -#define SCI_CONSOLE &serial_console -#else -#define SCI_CONSOLE 0 -#endif - -static char banner[] __initdata = - KERN_INFO "SuperH SCI(F) driver initialized\n"; - -static struct uart_driver sci_uart_driver = { - .owner = THIS_MODULE, - .driver_name = "sci", -#ifdef CONFIG_DEVFS_FS - .devfs_name = "ttsc/", -#endif - .dev_name = "ttySC", - .major = SCI_MAJOR, - .minor = SCI_MINOR_START, - .nr = SCI_NPORTS, - .cons = SCI_CONSOLE, -}; - -static int __init sci_init(void) -{ - int chan, ret; - - printk("%s", banner); - - ret = uart_register_driver(&sci_uart_driver); - if (ret == 0) { - for (chan = 0; chan < SCI_NPORTS; chan++) { - struct sci_port *sciport = &sci_ports[chan]; - -#if !defined(__H8300H__) && !defined(__H8300S__) - sciport->port.uartclk = (current_cpu_data.module_clock * 16); -#else - sciport->port.uartclk = CONFIG_CPU_CLOCK; -#endif - uart_add_one_port(&sci_uart_driver, &sciport->port); - sciport->break_timer.data = (unsigned long)sciport; - sciport->break_timer.function = sci_break_timer; - init_timer(&sciport->break_timer); - } - } - -#ifdef CONFIG_CPU_FREQ - cpufreq_register_notifier(&sci_nb, CPUFREQ_TRANSITION_NOTIFIER); - printk("sci: CPU frequency notifier registered\n"); -#endif - -#ifdef CONFIG_SH_STANDARD_BIOS - sh_bios_gdb_detach(); -#endif - - return ret; -} - -static void __exit sci_exit(void) -{ - int chan; - - for (chan = 0; chan < SCI_NPORTS; chan++) - uart_remove_one_port(&sci_uart_driver, &sci_ports[chan].port); - - uart_unregister_driver(&sci_uart_driver); -} - -module_init(sci_init); -module_exit(sci_exit); - |