/*
- * Driver for IFXMIPSASC serial ports
- *
* Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
*
* This program is free software; you can redistribute it and/or modify
#include <linux/console.h>
#include <linux/sysrq.h>
#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+#include <linux/bitops.h>
#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/bitops.h>
+
#include <asm/ifxmips/ifxmips.h>
#include <asm/ifxmips/ifxmips_irq.h>
-#include <asm/ifxmips/ifxmips_serial.h>
#define PORT_IFXMIPSASC 111
#define UART_DUMMY_UER_RX 1
static void ifxmipsasc_tx_chars(struct uart_port *port);
-extern void prom_printf(const char * fmt, ...);
-static struct uart_port ifxmipsasc_port;
+extern void prom_printf(const char *fmt, ...);
+static struct uart_port ifxmipsasc_port[2];
static struct uart_driver ifxmipsasc_reg;
-static unsigned int uartclk = 0;
extern unsigned int ifxmips_get_fpi_hz(void);
-static void
-ifxmipsasc_stop_tx (struct uart_port *port)
+static void ifxmipsasc_stop_tx(struct uart_port *port)
{
- /* fifo underrun shuts up after firing once */
return;
}
-static void
-ifxmipsasc_start_tx (struct uart_port *port)
+static void ifxmipsasc_start_tx(struct uart_port *port)
{
unsigned long flags;
-
local_irq_save(flags);
ifxmipsasc_tx_chars(port);
local_irq_restore(flags);
-
return;
}
-static void
-ifxmipsasc_stop_rx (struct uart_port *port)
+static void ifxmipsasc_stop_rx(struct uart_port *port)
{
- /* clear the RX enable bit */
- writel(ASCWHBSTATE_CLRREN, IFXMIPS_ASC1_WHBSTATE);
+ ifxmips_w32(ASCWHBSTATE_CLRREN, port->membase + IFXMIPS_ASC_WHBSTATE);
}
-static void
-ifxmipsasc_enable_ms (struct uart_port *port)
+static void ifxmipsasc_enable_ms(struct uart_port *port)
{
- /* no modem signals */
- return;
}
-static void
-ifxmipsasc_rx_chars (struct uart_port *port)
+#include <linux/version.h>
+
+static void ifxmipsasc_rx_chars(struct uart_port *port)
{
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 26))
+ struct tty_struct *tty = port->info->port.tty;
+#else
struct tty_struct *tty = port->info->tty;
+#endif
unsigned int ch = 0, rsr = 0, fifocnt;
- fifocnt = readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_RXFFLMASK;
- while (fifocnt--)
- {
+ fifocnt = ifxmips_r32(port->membase + IFXMIPS_ASC_FSTAT) & ASCFSTAT_RXFFLMASK;
+ while (fifocnt--) {
u8 flag = TTY_NORMAL;
- ch = readl(IFXMIPS_ASC1_RBUF);
- rsr = (readl(IFXMIPS_ASC1_STATE) & ASCSTATE_ANY) | UART_DUMMY_UER_RX;
+ ch = ifxmips_r32(port->membase + IFXMIPS_ASC_RBUF);
+ rsr = (ifxmips_r32(port->membase + IFXMIPS_ASC_STATE) & ASCSTATE_ANY) | UART_DUMMY_UER_RX;
tty_flip_buffer_push(tty);
port->icount.rx++;
if (rsr & ASCSTATE_ANY) {
if (rsr & ASCSTATE_PE) {
port->icount.parity++;
- writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRPE, IFXMIPS_ASC1_WHBSTATE);
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_WHBSTATE) | ASCWHBSTATE_CLRPE, port->membase + IFXMIPS_ASC_WHBSTATE);
} else if (rsr & ASCSTATE_FE) {
port->icount.frame++;
- writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRFE, IFXMIPS_ASC1_WHBSTATE);
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_WHBSTATE) | ASCWHBSTATE_CLRFE, port->membase + IFXMIPS_ASC_WHBSTATE);
}
if (rsr & ASCSTATE_ROE) {
port->icount.overrun++;
- writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRROE, IFXMIPS_ASC1_WHBSTATE);
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_WHBSTATE) | ASCWHBSTATE_CLRROE, port->membase + IFXMIPS_ASC_WHBSTATE);
}
rsr &= port->read_status_mask;
}
if (ch != 0)
tty_flip_buffer_push(tty);
-
return;
}
-static void
-ifxmipsasc_tx_chars (struct uart_port *port)
+static void ifxmipsasc_tx_chars(struct uart_port *port)
{
struct circ_buf *xmit = &port->info->xmit;
-
if (uart_tx_stopped(port)) {
ifxmipsasc_stop_tx(port);
return;
}
- while(((readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK)
- >> ASCFSTAT_TXFFLOFF) != IFXMIPSASC_TXFIFO_FULL)
- {
+ while (((ifxmips_r32(port->membase + IFXMIPS_ASC_FSTAT) & ASCFSTAT_TXFFLMASK)
+ >> ASCFSTAT_TXFFLOFF) != TXFIFO_FULL) {
if (port->x_char) {
- writel(port->x_char, IFXMIPS_ASC1_TBUF);
+ ifxmips_w32(port->x_char, port->membase + IFXMIPS_ASC_TBUF);
port->icount.tx++;
port->x_char = 0;
continue;
if (uart_circ_empty(xmit))
break;
- writel(port->info->xmit.buf[port->info->xmit.tail], IFXMIPS_ASC1_TBUF);
+ ifxmips_w32(port->info->xmit.buf[port->info->xmit.tail], port->membase + IFXMIPS_ASC_TBUF);
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
port->icount.tx++;
}
uart_write_wakeup(port);
}
-static irqreturn_t
-ifxmipsasc_tx_int (int irq, void *port)
+static irqreturn_t ifxmipsasc_tx_int(int irq, void *_port)
{
- writel(ASC_IRNCR_TIR, IFXMIPS_ASC1_IRNCR);
+ struct uart_port *port = (struct uart_port *)_port;
+ ifxmips_w32(ASC_IRNCR_TIR, port->membase + IFXMIPS_ASC_IRNCR);
ifxmipsasc_start_tx(port);
- mask_and_ack_ifxmips_irq(irq);
-
+ ifxmips_mask_and_ack_irq(irq);
return IRQ_HANDLED;
}
-static irqreturn_t
-ifxmipsasc_er_int (int irq, void *port)
+static irqreturn_t ifxmipsasc_er_int(int irq, void *_port)
{
+ struct uart_port *port = (struct uart_port *)_port;
/* clear any pending interrupts */
- writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRPE |
- ASCWHBSTATE_CLRFE | ASCWHBSTATE_CLRROE, IFXMIPS_ASC1_WHBSTATE);
-
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_WHBSTATE) | ASCWHBSTATE_CLRPE |
+ ASCWHBSTATE_CLRFE | ASCWHBSTATE_CLRROE, port->membase + IFXMIPS_ASC_WHBSTATE);
return IRQ_HANDLED;
}
-static irqreturn_t
-ifxmipsasc_rx_int (int irq, void *port)
+static irqreturn_t ifxmipsasc_rx_int(int irq, void *_port)
{
- writel(ASC_IRNCR_RIR, IFXMIPS_ASC1_IRNCR);
- ifxmipsasc_rx_chars((struct uart_port *) port);
- mask_and_ack_ifxmips_irq(irq);
-
+ struct uart_port *port = (struct uart_port *)_port;
+ ifxmips_w32(ASC_IRNCR_RIR, port->membase + IFXMIPS_ASC_IRNCR);
+ ifxmipsasc_rx_chars((struct uart_port *)port);
+ ifxmips_mask_and_ack_irq(irq);
return IRQ_HANDLED;
}
-static unsigned int
-ifxmipsasc_tx_empty (struct uart_port *port)
+static unsigned int ifxmipsasc_tx_empty(struct uart_port *port)
{
int status;
-
- status = readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK;
-
+ status = ifxmips_r32(port->membase + IFXMIPS_ASC_FSTAT) & ASCFSTAT_TXFFLMASK;
return status ? 0 : TIOCSER_TEMT;
}
-static unsigned int
-ifxmipsasc_get_mctrl (struct uart_port *port)
+static unsigned int ifxmipsasc_get_mctrl(struct uart_port *port)
{
return TIOCM_CTS | TIOCM_CAR | TIOCM_DSR;
}
-static void
-ifxmipsasc_set_mctrl (struct uart_port *port, u_int mctrl)
+static void ifxmipsasc_set_mctrl(struct uart_port *port, u_int mctrl)
{
- return;
}
-static void
-ifxmipsasc_break_ctl (struct uart_port *port, int break_state)
+static void ifxmipsasc_break_ctl(struct uart_port *port, int break_state)
{
- return;
}
-static void
-ifxmipsasc1_hw_init (void)
-{
- /* this setup was probably already done in ROM/u-boot but we do it again*/
- /* TODO: GPIO pins are multifunction */
- writel(readl(IFXMIPS_ASC1_CLC) & ~IFXMIPS_ASC1_CLC_DISS, IFXMIPS_ASC1_CLC);
- writel((readl(IFXMIPS_ASC1_CLC) & ~ASCCLC_RMCMASK) | (1 << ASCCLC_RMCOFFSET), IFXMIPS_ASC1_CLC);
- writel(0, IFXMIPS_ASC1_PISEL);
- writel(((IFXMIPSASC_TXFIFO_FL << ASCTXFCON_TXFITLOFF) &
- ASCTXFCON_TXFITLMASK) | ASCTXFCON_TXFEN | ASCTXFCON_TXFFLU, IFXMIPS_ASC1_TXFCON);
- writel(((IFXMIPSASC_RXFIFO_FL << ASCRXFCON_RXFITLOFF) &
- ASCRXFCON_RXFITLMASK) | ASCRXFCON_RXFEN | ASCRXFCON_RXFFLU, IFXMIPS_ASC1_RXFCON);
- wmb ();
-
- /*framing, overrun, enable */
- writel(readl(IFXMIPS_ASC1_CON) | ASCCON_M_8ASYNC | ASCCON_FEN | ASCCON_TOEN | ASCCON_ROEN,
- IFXMIPS_ASC1_CON);
-}
-
-static int
-ifxmipsasc_startup (struct uart_port *port)
+static int ifxmipsasc_startup(struct uart_port *port)
{
unsigned long flags;
int retval;
- /* this assumes: CON.BRS = CON.FDE = 0 */
- if (uartclk == 0)
- uartclk = ifxmips_get_fpi_hz();
+ port->uartclk = ifxmips_get_fpi_hz();
- ifxmipsasc_port.uartclk = uartclk;
-
- ifxmipsasc1_hw_init();
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CLC) & ~IFXMIPS_ASC_CLC_DISS, port->membase + IFXMIPS_ASC_CLC);
+ ifxmips_w32(((ifxmips_r32(port->membase + IFXMIPS_ASC_CLC) & ~ASCCLC_RMCMASK)) | (1 << ASCCLC_RMCOFFSET), port->membase + IFXMIPS_ASC_CLC);
+ ifxmips_w32(0, port->membase + IFXMIPS_ASC_PISEL);
+ ifxmips_w32(((TXFIFO_FL << ASCTXFCON_TXFITLOFF) & ASCTXFCON_TXFITLMASK) | ASCTXFCON_TXFEN | ASCTXFCON_TXFFLU, port->membase + IFXMIPS_ASC_TXFCON);
+ ifxmips_w32(((RXFIFO_FL << ASCRXFCON_RXFITLOFF) & ASCRXFCON_RXFITLMASK) | ASCRXFCON_RXFEN | ASCRXFCON_RXFFLU, port->membase + IFXMIPS_ASC_RXFCON);
+ wmb();
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CON) | ASCCON_M_8ASYNC | ASCCON_FEN | ASCCON_TOEN | ASCCON_ROEN, port->membase + IFXMIPS_ASC_CON);
local_irq_save(flags);
- retval = request_irq(IFXMIPSASC1_RIR, ifxmipsasc_rx_int, IRQF_DISABLED, "asc_rx", port);
- if (retval){
- printk("failed to request ifxmipsasc_rx_int\n");
+ retval = request_irq(port->irq, ifxmipsasc_tx_int, IRQF_DISABLED, "asc_tx", port);
+ if (retval) {
+ printk(KERN_ERR "failed to request ifxmipsasc_tx_int\n");
return retval;
}
- retval = request_irq(IFXMIPSASC1_TIR, ifxmipsasc_tx_int, IRQF_DISABLED, "asc_tx", port);
- if (retval){
- printk("failed to request ifxmipsasc_tx_int\n");
+ retval = request_irq(port->irq + 2, ifxmipsasc_rx_int, IRQF_DISABLED, "asc_rx", port);
+ if (retval) {
+ printk(KERN_ERR "failed to request ifxmipsasc_rx_int\n");
goto err1;
}
- retval = request_irq(IFXMIPSASC1_EIR, ifxmipsasc_er_int, IRQF_DISABLED, "asc_er", port);
- if (retval){
- printk("failed to request ifxmipsasc_er_int\n");
+ retval = request_irq(port->irq + 3, ifxmipsasc_er_int, IRQF_DISABLED, "asc_er", port);
+ if (retval) {
+ printk(KERN_ERR "failed to request ifxmipsasc_er_int\n");
goto err2;
}
- writel(ASC_IRNREN_RX_BUF | ASC_IRNREN_TX_BUF | ASC_IRNREN_ERR | ASC_IRNREN_TX,
- IFXMIPS_ASC1_IRNREN);
+ ifxmips_w32(ASC_IRNREN_RX_BUF | ASC_IRNREN_TX_BUF | ASC_IRNREN_ERR | ASC_IRNREN_TX, port->membase + IFXMIPS_ASC_IRNREN);
local_irq_restore(flags);
-
return 0;
err2:
- free_irq(IFXMIPSASC1_TIR, port);
-
+ free_irq(port->irq + 2, port);
err1:
- free_irq(IFXMIPSASC1_RIR, port);
+ free_irq(port->irq, port);
local_irq_restore(flags);
-
return retval;
}
-static void
-ifxmipsasc_shutdown (struct uart_port *port)
+static void ifxmipsasc_shutdown(struct uart_port *port)
{
- free_irq(IFXMIPSASC1_RIR, port);
- free_irq(IFXMIPSASC1_TIR, port);
- free_irq(IFXMIPSASC1_EIR, port);
- /*
- * disable the baudrate generator to disable the ASC
- */
- writel(0, IFXMIPS_ASC1_CON);
-
- /* flush and then disable the fifos */
- writel(readl(IFXMIPS_ASC1_RXFCON) | ASCRXFCON_RXFFLU, IFXMIPS_ASC1_RXFCON);
- writel(readl(IFXMIPS_ASC1_RXFCON) & ~ASCRXFCON_RXFEN, IFXMIPS_ASC1_RXFCON);
- writel(readl(IFXMIPS_ASC1_TXFCON) | ASCTXFCON_TXFFLU, IFXMIPS_ASC1_TXFCON);
- writel(readl(IFXMIPS_ASC1_TXFCON) & ~ASCTXFCON_TXFEN, IFXMIPS_ASC1_TXFCON);
+ free_irq(port->irq, port);
+ free_irq(port->irq + 2, port);
+ free_irq(port->irq + 3, port);
+
+ ifxmips_w32(0, port->membase + IFXMIPS_ASC_CON);
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_RXFCON) | ASCRXFCON_RXFFLU, port->membase + IFXMIPS_ASC_RXFCON);
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_RXFCON) & ~ASCRXFCON_RXFEN, port->membase + IFXMIPS_ASC_RXFCON);
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_TXFCON) | ASCTXFCON_TXFFLU, port->membase + IFXMIPS_ASC_TXFCON);
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_TXFCON) & ~ASCTXFCON_TXFEN, port->membase + IFXMIPS_ASC_TXFCON);
}
static void ifxmipsasc_set_termios(struct uart_port *port, struct ktermios *new, struct ktermios *old)
cflag = new->c_cflag;
iflag = new->c_iflag;
- /* byte size and parity */
switch (cflag & CSIZE) {
case CS7:
con = ASCCON_M_7ASYNC;
local_irq_save(flags);
/* set up CON */
- writel(readl(IFXMIPS_ASC1_CON) | con, IFXMIPS_ASC1_CON);
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CON) | con, port->membase + IFXMIPS_ASC_CON);
/* Set baud rate - take a divider of 2 into account */
- baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);
+ baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);
quot = uart_get_divisor(port, baud);
quot = quot / 2 - 1;
/* disable the baudrate generator */
- writel(readl(IFXMIPS_ASC1_CON) & ~ASCCON_R, IFXMIPS_ASC1_CON);
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CON) & ~ASCCON_R, port->membase + IFXMIPS_ASC_CON);
/* make sure the fractional divider is off */
- writel(readl(IFXMIPS_ASC1_CON) & ~ASCCON_FDE, IFXMIPS_ASC1_CON);
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CON) & ~ASCCON_FDE, port->membase + IFXMIPS_ASC_CON);
/* set up to use divisor of 2 */
- writel(readl(IFXMIPS_ASC1_CON) & ~ASCCON_BRS, IFXMIPS_ASC1_CON);
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CON) & ~ASCCON_BRS, port->membase + IFXMIPS_ASC_CON);
/* now we can write the new baudrate into the register */
- writel(quot, IFXMIPS_ASC1_BG);
+ ifxmips_w32(quot, port->membase + IFXMIPS_ASC_BG);
/* turn the baudrate generator back on */
- writel(readl(IFXMIPS_ASC1_CON) | ASCCON_R, IFXMIPS_ASC1_CON);
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CON) | ASCCON_R, port->membase + IFXMIPS_ASC_CON);
/* enable rx */
- writel(ASCWHBSTATE_SETREN, IFXMIPS_ASC1_WHBSTATE);
+ ifxmips_w32(ASCWHBSTATE_SETREN, port->membase + IFXMIPS_ASC_WHBSTATE);
local_irq_restore(flags);
}
-static const char*
-ifxmipsasc_type (struct uart_port *port)
+static const char *ifxmipsasc_type(struct uart_port *port)
{
- return port->type == PORT_IFXMIPSASC ? "IFXMIPSASC" : NULL;
+ if (port->type == PORT_IFXMIPSASC) {
+ if (port->membase == (void *)IFXMIPS_ASC_BASE_ADDR)
+ return "asc0";
+ else
+ return "asc1";
+ } else {
+ return NULL;
+ }
}
-static void
-ifxmipsasc_release_port (struct uart_port *port)
+static void ifxmipsasc_release_port(struct uart_port *port)
{
- return;
}
-static int
-ifxmipsasc_request_port (struct uart_port *port)
+static int ifxmipsasc_request_port(struct uart_port *port)
{
return 0;
}
-static void
-ifxmipsasc_config_port (struct uart_port *port, int flags)
+static void ifxmipsasc_config_port(struct uart_port *port, int flags)
{
if (flags & UART_CONFIG_TYPE) {
port->type = PORT_IFXMIPSASC;
}
}
-static int
-ifxmipsasc_verify_port (struct uart_port *port, struct serial_struct *ser)
+static int ifxmipsasc_verify_port(struct uart_port *port, struct serial_struct *ser)
{
int ret = 0;
if (ser->type != PORT_UNKNOWN && ser->type != PORT_IFXMIPSASC)
}
static struct uart_ops ifxmipsasc_pops = {
- .tx_empty = ifxmipsasc_tx_empty,
+ .tx_empty = ifxmipsasc_tx_empty,
.set_mctrl = ifxmipsasc_set_mctrl,
.get_mctrl = ifxmipsasc_get_mctrl,
- .stop_tx = ifxmipsasc_stop_tx,
- .start_tx = ifxmipsasc_start_tx,
- .stop_rx = ifxmipsasc_stop_rx,
+ .stop_tx = ifxmipsasc_stop_tx,
+ .start_tx = ifxmipsasc_start_tx,
+ .stop_rx = ifxmipsasc_stop_rx,
.enable_ms = ifxmipsasc_enable_ms,
.break_ctl = ifxmipsasc_break_ctl,
- .startup = ifxmipsasc_startup,
- .shutdown = ifxmipsasc_shutdown,
+ .startup = ifxmipsasc_startup,
+ .shutdown = ifxmipsasc_shutdown,
.set_termios = ifxmipsasc_set_termios,
- .type = ifxmipsasc_type,
+ .type = ifxmipsasc_type,
.release_port = ifxmipsasc_release_port,
.request_port = ifxmipsasc_request_port,
.config_port = ifxmipsasc_config_port,
.verify_port = ifxmipsasc_verify_port,
};
-static struct uart_port ifxmipsasc_port = {
- membase: (void *)IFXMIPS_ASC1_BASE_ADDR,
- mapbase: IFXMIPS_ASC1_BASE_ADDR,
- iotype: SERIAL_IO_MEM,
- irq: IFXMIPSASC1_RIR,
- uartclk: 0,
- fifosize: 16,
- unused: {IFXMIPSASC1_TIR, IFXMIPSASC1_EIR},
- type: PORT_IFXMIPSASC,
- ops: &ifxmipsasc_pops,
- flags: ASYNC_BOOT_AUTOCONF,
+static struct uart_port ifxmipsasc_port[2] = {
+ {
+ .membase = (void *)IFXMIPS_ASC_BASE_ADDR,
+ .mapbase = IFXMIPS_ASC_BASE_ADDR,
+ .iotype = SERIAL_IO_MEM,
+ .irq = IFXMIPSASC_TIR(0),
+ .uartclk = 0,
+ .fifosize = 16,
+ .type = PORT_IFXMIPSASC,
+ .ops = &ifxmipsasc_pops,
+ .flags = ASYNC_BOOT_AUTOCONF,
+ .line = 0
+ }, {
+ .membase = (void *)(IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_BASE_DIFF),
+ .mapbase = IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_BASE_DIFF,
+ .iotype = SERIAL_IO_MEM,
+ .irq = IFXMIPSASC_TIR(1),
+ .uartclk = 0,
+ .fifosize = 16,
+ .type = PORT_IFXMIPSASC,
+ .ops = &ifxmipsasc_pops,
+ .flags = ASYNC_BOOT_AUTOCONF,
+ .line = 1
+ }
};
-static void
-ifxmipsasc_console_write (struct console *co, const char *s, u_int count)
+static void ifxmipsasc_console_write(struct console *co, const char *s, u_int count)
{
+ int port = co->index;
int i, fifocnt;
unsigned long flags;
-
local_irq_save(flags);
- for (i = 0; i < count; i++)
- {
- /* wait until the FIFO is not full */
- do
- {
- fifocnt = (readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK)
- >> ASCFSTAT_TXFFLOFF;
- } while (fifocnt == IFXMIPSASC_TXFIFO_FULL);
+ for (i = 0; i < count; i++) {
+ do {
+ fifocnt = (ifxmips_r32((u32 *)(IFXMIPS_ASC_BASE_ADDR + (port * IFXMIPS_ASC_BASE_DIFF) + IFXMIPS_ASC_FSTAT)) & ASCFSTAT_TXFFLMASK)
+ >> ASCFSTAT_TXFFLOFF;
+ } while (fifocnt == TXFIFO_FULL);
if (s[i] == '\0')
- {
break;
- }
- if (s[i] == '\n')
- {
- writel('\r', IFXMIPS_ASC1_TBUF);
- do
- {
- fifocnt = (readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK)
+ if (s[i] == '\n') {
+ ifxmips_w32('\r', (u32 *)(IFXMIPS_ASC_BASE_ADDR + (port * IFXMIPS_ASC_BASE_DIFF) + IFXMIPS_ASC_TBUF));
+ do {
+ fifocnt = (ifxmips_r32((u32 *)(IFXMIPS_ASC_BASE_ADDR + (port * IFXMIPS_ASC_BASE_DIFF) + IFXMIPS_ASC_FSTAT)) & ASCFSTAT_TXFFLMASK)
>> ASCFSTAT_TXFFLOFF;
- } while (fifocnt == IFXMIPSASC_TXFIFO_FULL);
+ } while (fifocnt == TXFIFO_FULL);
}
- writel(s[i], IFXMIPS_ASC1_TBUF);
+ ifxmips_w32(s[i], (u32 *)(IFXMIPS_ASC_BASE_ADDR + (port * IFXMIPS_ASC_BASE_DIFF) + IFXMIPS_ASC_TBUF));
}
local_irq_restore(flags);
}
-static int __init
-ifxmipsasc_console_setup (struct console *co, char *options)
+static int __init ifxmipsasc_console_setup(struct console *co, char *options)
{
- struct uart_port *port;
+ int port = co->index;
int baud = 115200;
int bits = 8;
int parity = 'n';
int flow = 'n';
-
- if (uartclk == 0)
- uartclk = ifxmips_get_fpi_hz();
- co->index = 0;
- port = &ifxmipsasc_port;
- ifxmipsasc_port.uartclk = uartclk;
- ifxmipsasc_port.type = PORT_IFXMIPSASC;
-
- if (options){
+ ifxmipsasc_port[port].uartclk = ifxmips_get_fpi_hz();
+ ifxmipsasc_port[port].type = PORT_IFXMIPSASC;
+ if (options)
uart_parse_options(options, &baud, &parity, &bits, &flow);
- }
-
- return uart_set_options(port, co, baud, parity, bits, flow);
+ return uart_set_options(&ifxmipsasc_port[port], co, baud, parity, bits, flow);
}
-static struct uart_driver ifxmipsasc_reg;
-static struct console ifxmipsasc_console = {
- name: "ttyS",
- write: ifxmipsasc_console_write,
- device: uart_console_device,
- setup: ifxmipsasc_console_setup,
- flags: CON_PRINTBUFFER,
- index: -1,
- data: &ifxmipsasc_reg,
+static struct console ifxmipsasc_console[2] =
+{
+ {
+ .name = "ttyS",
+ .write = ifxmipsasc_console_write,
+ .device = uart_console_device,
+ .setup = ifxmipsasc_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = 0,
+ .data = &ifxmipsasc_reg,
+ }, {
+ .name = "ttyS",
+ .write = ifxmipsasc_console_write,
+ .device = uart_console_device,
+ .setup = ifxmipsasc_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = 1,
+ .data = &ifxmipsasc_reg,
+ }
};
-static int __init
-ifxmipsasc_console_init (void)
+static int __init ifxmipsasc_console_init(void)
{
- register_console(&ifxmipsasc_console);
+ register_console(&ifxmipsasc_console[0]);
+ register_console(&ifxmipsasc_console[1]);
return 0;
}
console_initcall(ifxmipsasc_console_init);
static struct uart_driver ifxmipsasc_reg = {
- .owner = THIS_MODULE,
- .driver_name = "serial",
- .dev_name = "ttyS",
- .major = TTY_MAJOR,
- .minor = 64,
- .nr = 1,
- .cons = &ifxmipsasc_console,
+ .owner = THIS_MODULE,
+ .driver_name = "serial",
+ .dev_name = "ttyS",
+ .major = TTY_MAJOR,
+ .minor = 64,
+ .nr = 2,
+ .cons = &ifxmipsasc_console[1],
};
-static int __init
-ifxmipsasc_init (void)
+int __init ifxmipsasc_init(void)
{
- unsigned char res;
-
+ int ret;
uart_register_driver(&ifxmipsasc_reg);
- res = uart_add_one_port(&ifxmipsasc_reg, &ifxmipsasc_port);
-
- return res;
+ ret = uart_add_one_port(&ifxmipsasc_reg, &ifxmipsasc_port[0]);
+ ret = uart_add_one_port(&ifxmipsasc_reg, &ifxmipsasc_port[1]);
+ return 0;
}
-static void __exit
-ifxmipsasc_exit (void)
+void __exit ifxmipsasc_exit(void)
{
uart_unregister_driver(&ifxmipsasc_reg);
}
projects / openwrt.git / blobdiff