more danube 2 ifxmips transitions

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9826 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 0 insertions, 608 deletions

diff --git a/target/linux/ifxmips/files/drivers/serial/danube_asc.c b/target/linux/ifxmips/files/drivers/serial/danube_asc.c
deleted file mode 100644
index b191241db..000000000
--- a/target/linux/ifxmips/files/drivers/serial/danube_asc.c
+++ /dev/null
@@ -1,608 +0,0 @@
-/*
- *  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
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- * Copyright (C) 2004 Infineon IFAP DC COM CPE
- * Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org>
- * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
- */
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/major.h>
-#include <linux/string.h>
-#include <linux/fcntl.h>
-#include <linux/ptrace.h>
-#include <linux/ioport.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/circ_buf.h>
-#include <linux/serial.h>
-#include <linux/serial_core.h>
-#include <linux/console.h>
-#include <linux/sysrq.h>
-#include <linux/irq.h>
-
-#include <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
-
-#include <linux/serial_core.h>
-
-#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;
-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)
-{
-	/* fifo underrun shuts up after firing once */
-	return;
-}
-
-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)
-{
-	/* clear the RX enable bit */
-	writel(ASCWHBSTATE_CLRREN, IFXMIPS_ASC1_WHBSTATE);
-}
-
-static void
-ifxmipsasc_enable_ms (struct uart_port *port)
-{
-	/* no modem signals */
-	return;
-}
-
-static void
-ifxmipsasc_rx_chars (struct uart_port *port)
-{
-	struct tty_struct *tty = port->info->tty;
-	unsigned int ch = 0, rsr = 0, fifocnt;
-
-	fifocnt = readl(IFXMIPS_ASC1_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;
-		tty_flip_buffer_push(tty);
-		port->icount.rx++;
-
-		/*
-		 * Note that the error handling code is
-		 * out of the main execution path
-		 */
-		if (rsr & ASCSTATE_ANY) {
-			if (rsr & ASCSTATE_PE) {
-				port->icount.parity++;
-				writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRPE, IFXMIPS_ASC1_WHBSTATE);
-			} else if (rsr & ASCSTATE_FE) {
-				port->icount.frame++;
-				writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRFE, IFXMIPS_ASC1_WHBSTATE);
-			}
-			if (rsr & ASCSTATE_ROE) {
-				port->icount.overrun++;
-				writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRROE, IFXMIPS_ASC1_WHBSTATE);
-			}
-
-			rsr &= port->read_status_mask;
-
-			if (rsr & ASCSTATE_PE)
-				flag = TTY_PARITY;
-			else if (rsr & ASCSTATE_FE)
-				flag = TTY_FRAME;
-		}
-
-		if ((rsr & port->ignore_status_mask) == 0)
-			tty_insert_flip_char(tty, ch, flag);
-
-		if (rsr & ASCSTATE_ROE)
-			/*
-			 * Overrun is special, since it's reported
-			 * immediately, and doesn't affect the current
-			 * character
-			 */
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-	}
-	if (ch != 0)
-		tty_flip_buffer_push(tty);
-
-	return;
-}
-
-
-static void
-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)
-	{
-		if (port->x_char) {
-			writel(port->x_char, IFXMIPS_ASC1_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);
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		port->icount.tx++;
-	}
-
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(port);
-}
-
-static irqreturn_t
-ifxmipsasc_tx_int (int irq, void *port)
-{
-	writel(ASC_IRNCR_TIR, IFXMIPS_ASC1_IRNCR);
-	ifxmipsasc_start_tx(port);
-	mask_and_ack_ifxmips_irq(irq);
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t
-ifxmipsasc_er_int (int irq, void *port)
-{
-	/* clear any pending interrupts */
-	writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRPE |
-			ASCWHBSTATE_CLRFE | ASCWHBSTATE_CLRROE, IFXMIPS_ASC1_WHBSTATE);
-
-	return IRQ_HANDLED;
-}
-
-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);
-
-	return IRQ_HANDLED;
-}
-
-static unsigned int
-ifxmipsasc_tx_empty (struct uart_port *port)
-{
-	int status;
-
-	status = readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK;
-
-	return status ? 0 : TIOCSER_TEMT;
-}
-
-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)
-{
-	return;
-}
-
-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)
-{
-	unsigned long flags;
-	int retval;
-
-	/* this assumes: CON.BRS = CON.FDE = 0 */
-	if (uartclk == 0)
-		uartclk = ifxmips_get_fpi_hz();
-
-	ifxmipsasc_port.uartclk = uartclk;
-
-	ifxmipsasc1_hw_init();
-
-	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");
-		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");
-		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");
-		goto err2;
-	}
-
-	writel(ASC_IRNREN_RX_BUF | ASC_IRNREN_TX_BUF | ASC_IRNREN_ERR | ASC_IRNREN_TX,
-		IFXMIPS_ASC1_IRNREN);
-
-	local_irq_restore(flags);
-
-	return 0;
-
-err2:
-	free_irq(IFXMIPSASC1_TIR, port);
-
-err1:
-	free_irq(IFXMIPSASC1_RIR, port);
-	local_irq_restore(flags);
-
-	return retval;
-}
-
-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);
-}
-
-static void ifxmipsasc_set_termios(struct uart_port *port, struct ktermios *new, struct ktermios *old)
-{
-	unsigned int cflag;
-	unsigned int iflag;
-	unsigned int quot;
-	unsigned int baud;
-	unsigned int con = 0;
-	unsigned long flags;
-
-	cflag = new->c_cflag;
-	iflag = new->c_iflag;
-
-	/* byte size and parity */
-	switch (cflag & CSIZE) {
-	case CS7:
-		con = ASCCON_M_7ASYNC;
-		break;
-
-	case CS5:
-	case CS6:
-	default:
-		con = ASCCON_M_8ASYNC;
-		break;
-	}
-
-	if (cflag & CSTOPB)
-		con |= ASCCON_STP;
-
-	if (cflag & PARENB) {
-		if (!(cflag & PARODD))
-			con &= ~ASCCON_ODD;
-		else
-			con |= ASCCON_ODD;
-	}
-
-	port->read_status_mask = ASCSTATE_ROE;
-	if (iflag & INPCK)
-		port->read_status_mask |= ASCSTATE_FE | ASCSTATE_PE;
-
-	port->ignore_status_mask = 0;
-	if (iflag & IGNPAR)
-		port->ignore_status_mask |= ASCSTATE_FE | ASCSTATE_PE;
-
-	if (iflag & IGNBRK) {
-		/*
-		 * If we're ignoring parity and break indicators,
-		 * ignore overruns too (for real raw support).
-		 */
-		if (iflag & IGNPAR)
-			port->ignore_status_mask |= ASCSTATE_ROE;
-	}
-
-	if ((cflag & CREAD) == 0)
-		port->ignore_status_mask |= UART_DUMMY_UER_RX;
-
-	/* set error signals  - framing, parity  and overrun, enable receiver */
-	con |= ASCCON_FEN | ASCCON_TOEN | ASCCON_ROEN;
-
-	local_irq_save(flags);
-
-	/* set up CON */
-	writel(readl(IFXMIPS_ASC1_CON) | con, IFXMIPS_ASC1_CON);
-
-	/* Set baud rate - take a divider of 2 into account */
-    baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);
-	quot = uart_get_divisor(port, baud);
-	quot = quot / 2 - 1;
-
-	/* disable the baudrate generator */
-	writel(readl(IFXMIPS_ASC1_CON) & ~ASCCON_R, IFXMIPS_ASC1_CON);
-
-	/* make sure the fractional divider is off */
-	writel(readl(IFXMIPS_ASC1_CON) & ~ASCCON_FDE, IFXMIPS_ASC1_CON);
-
-	/* set up to use divisor of 2 */
-	writel(readl(IFXMIPS_ASC1_CON) & ~ASCCON_BRS, IFXMIPS_ASC1_CON);
-
-	/* now we can write the new baudrate into the register */
-	writel(quot, IFXMIPS_ASC1_BG);
-
-	/* turn the baudrate generator back on */
-	writel(readl(IFXMIPS_ASC1_CON) | ASCCON_R, IFXMIPS_ASC1_CON);
-
-	/* enable rx */
-	writel(ASCWHBSTATE_SETREN, IFXMIPS_ASC1_WHBSTATE);
-
-	local_irq_restore(flags);
-}
-
-static const char*
-ifxmipsasc_type (struct uart_port *port)
-{
-	return port->type == PORT_IFXMIPSASC ? "IFXMIPSASC" : NULL;
-}
-
-static void
-ifxmipsasc_release_port (struct uart_port *port)
-{
-	return;
-}
-
-static int
-ifxmipsasc_request_port (struct uart_port *port)
-{
-	return 0;
-}
-
-static void
-ifxmipsasc_config_port (struct uart_port *port, int flags)
-{
-	if (flags & UART_CONFIG_TYPE) {
-		port->type = PORT_IFXMIPSASC;
-		ifxmipsasc_request_port(port);
-	}
-}
-
-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)
-		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 ifxmipsasc_pops = {
-	.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,
-	.enable_ms =	ifxmipsasc_enable_ms,
-	.break_ctl =	ifxmipsasc_break_ctl,
-	.startup =		ifxmipsasc_startup,
-	.shutdown =		ifxmipsasc_shutdown,
-	.set_termios =	ifxmipsasc_set_termios,
-	.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 void
-ifxmipsasc_console_write (struct console *co, const char *s, u_int count)
-{
-	int i, fifocnt;
-	unsigned long flags;
-
-	local_irq_save(flags);
-	for (i = 0; i < count; i++)
-	{
-		/* wait until the FIFO is not full */
-		do
-		{
-			fifocnt = (readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK)
-			                >> ASCFSTAT_TXFFLOFF;
-		} while (fifocnt == IFXMIPSASC_TXFIFO_FULL);
-
-		if (s[i] == '\0')
-		{
-			break;
-		}
-
-		if (s[i] == '\n')
-		{
-			writel('\r', IFXMIPS_ASC1_TBUF);
-			do
-			{
-				fifocnt = (readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK)
-					>> ASCFSTAT_TXFFLOFF;
-			} while (fifocnt == IFXMIPSASC_TXFIFO_FULL);
-		}
-		writel(s[i], IFXMIPS_ASC1_TBUF);
-	}
-
-	local_irq_restore(flags);
-}
-
-static int __init
-ifxmipsasc_console_setup (struct console *co, char *options)
-{
-	struct uart_port *port;
-	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){
-		uart_parse_options(options, &baud, &parity, &bits, &flow);
-	}
-
-	return uart_set_options(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 int __init
-ifxmipsasc_console_init (void)
-{
-	register_console(&ifxmipsasc_console);
-	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,
-};
-
-static int __init
-ifxmipsasc_init (void)
-{
-	unsigned char res;
-
-	uart_register_driver(&ifxmipsasc_reg);
-	res = uart_add_one_port(&ifxmipsasc_reg, &ifxmipsasc_port);
-
-	return res;
-}
-
-static void __exit
-ifxmipsasc_exit (void)
-{
-	uart_unregister_driver(&ifxmipsasc_reg);
-}
-
-module_init(ifxmipsasc_init);
-module_exit(ifxmipsasc_exit);
-
-MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
-MODULE_DESCRIPTION("MIPS IFXMips serial port driver");
-MODULE_LICENSE("GPL");