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-rw-r--r--recipes/linux/linux-2.6.18/atmel-usart3-driver.patch1443
1 files changed, 1443 insertions, 0 deletions
diff --git a/recipes/linux/linux-2.6.18/atmel-usart3-driver.patch b/recipes/linux/linux-2.6.18/atmel-usart3-driver.patch
new file mode 100644
index 0000000000..2f1b1cf137
--- /dev/null
+++ b/recipes/linux/linux-2.6.18/atmel-usart3-driver.patch
@@ -0,0 +1,1443 @@
+From nobody Mon Sep 17 00:00:00 2001
+From: Håvard Skinnemoen <hskinnemoen@atmel.com>
+Date: Fri Nov 18 16:31:34 2005 +0100
+Subject: [PATCH] AVR32: USART3 Serial Driver
+
+---
+
+ drivers/serial/Kconfig | 21
+ drivers/serial/Makefile | 1
+ drivers/serial/atmel_usart.c | 1086 +++++++++++++++++++++++++++++++++++++++++++
+ drivers/serial/atmel_usart.h | 290 +++++++++++
+ 4 files changed, 1398 insertions(+)
+
+Index: linux-2.6.18-avr32/drivers/serial/Kconfig
+===================================================================
+--- linux-2.6.18-avr32.orig/drivers/serial/Kconfig 2006-11-02 14:16:07.000000000 +0100
++++ linux-2.6.18-avr32/drivers/serial/Kconfig 2006-11-02 15:54:18.000000000 +0100
+@@ -246,6 +246,27 @@ config SERIAL_8250_AU1X00
+
+ comment "Non-8250 serial port support"
+
++config SERIAL_ATMEL
++ tristate "Atmel USART3 serial port support"
++ depends on AVR32
++ select SERIAL_CORE
++ default y
++ help
++ Support for the Atmel USART3 on-chip USART found in most
++ AT32 and AT91 parts from Atmel.
++
++ If unsure, say Y.
++
++config SERIAL_ATMEL_CONSOLE
++ bool "Support for console on Atmel USART3 serial port"
++ depends on SERIAL_ATMEL=y
++ select SERIAL_CORE_CONSOLE
++ help
++ Say Y here if you wish to use an Atmel USART3 serial port as
++ the system console (the system console is the device which
++ receives all kernel messages and warnings and which allows
++ logins in single user mode).
++
+ config SERIAL_AMBA_PL010
+ tristate "ARM AMBA PL010 serial port support"
+ depends on ARM_AMBA && (BROKEN || !ARCH_VERSATILE)
+Index: linux-2.6.18-avr32/drivers/serial/Makefile
+===================================================================
+--- linux-2.6.18-avr32.orig/drivers/serial/Makefile 2006-11-02 14:16:07.000000000 +0100
++++ linux-2.6.18-avr32/drivers/serial/Makefile 2006-11-02 14:17:29.000000000 +0100
+@@ -20,6 +20,7 @@ obj-$(CONFIG_SERIAL_8250_BOCA) += 8250_b
+ obj-$(CONFIG_SERIAL_8250_HUB6) += 8250_hub6.o
+ obj-$(CONFIG_SERIAL_8250_MCA) += 8250_mca.o
+ obj-$(CONFIG_SERIAL_8250_AU1X00) += 8250_au1x00.o
++obj-$(CONFIG_SERIAL_ATMEL) += atmel_usart.o
+ obj-$(CONFIG_SERIAL_AMBA_PL010) += amba-pl010.o
+ obj-$(CONFIG_SERIAL_AMBA_PL011) += amba-pl011.o
+ obj-$(CONFIG_SERIAL_CLPS711X) += clps711x.o
+Index: linux-2.6.18-avr32/drivers/serial/atmel_usart.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.18-avr32/drivers/serial/atmel_usart.c 2006-11-02 15:54:18.000000000 +0100
+@@ -0,0 +1,1086 @@
++/*
++ * Driver for Atmel USART3 Serial ports
++ *
++ * Based on AT91RM9200 serial driver by Rick Bronson
++ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
++ * Based on drivers/serial/sa1100.c by Deep Blue Solutions Ltd.
++ *
++ * Copyright (C) 2004-2006 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++#include <linux/clk.h>
++#include <linux/console.h>
++#include <linux/dma-mapping.h>
++#include <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/ioport.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/sched.h>
++#include <linux/serial.h>
++#include <linux/tty.h>
++
++#include <asm/io.h>
++#include <asm/irq.h>
++
++#include <asm/arch/board.h>
++
++#if defined(CONFIG_SERIAL_ATMEL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
++#define SUPPORT_SYSRQ
++#include <linux/sysrq.h>
++#endif
++
++#include <linux/serial_core.h>
++
++#include "atmel_usart.h"
++
++/*
++ * TODO: Move this definition into linux/serial_core.h
++ */
++#define PORT_USART3 60
++
++/*
++ * Use the same major/minor numbers as the AT91 USART, which is
++ * actually the same chip
++ */
++#define SERIAL_USART3_MAJOR TTY_MAJOR
++#define MINOR_START 64
++#define NR_PORTS 4
++
++#define ERROR_FLAGS (USART3_BIT(CSR_PARE) \
++ | USART3_BIT(CSR_FRAME) \
++ | USART3_BIT(CSR_OVRE))
++
++/* Must be a power of two, or everything will break */
++#define RX_BUFFER_SIZE 32
++struct usart3_port {
++ void __iomem *regs;
++ int break_active;
++ unsigned int tx_dma_head;
++ int rx_tail;
++ char *rx_buffer;
++ dma_addr_t rx_dma;
++ dma_addr_t tx_dma;
++ struct clk *mck;
++ unsigned long mapsize;
++ struct uart_port uart;
++};
++#define to_usart3_port(port) container_of(port, struct usart3_port, uart)
++
++static void tx_dma_sync(struct uart_port *port)
++{
++ struct usart3_port *up = to_usart3_port(port);
++ struct circ_buf *xmit = &port->info->xmit;
++
++ if (xmit->head < up->tx_dma_head) {
++ dma_sync_single_for_device(port->dev,
++ up->tx_dma + up->tx_dma_head,
++ UART_XMIT_SIZE - up->tx_dma_head,
++ DMA_TO_DEVICE);
++ dma_sync_single_for_device(port->dev, up->tx_dma,
++ xmit->head, DMA_TO_DEVICE);
++ } else {
++ dma_sync_single_for_device(port->dev,
++ up->tx_dma + up->tx_dma_head,
++ xmit->head - up->tx_dma_head,
++ DMA_TO_DEVICE);
++ }
++}
++
++static void tx_dma_update_tail(struct uart_port *port)
++{
++ struct usart3_port *up = to_usart3_port(port);
++ struct circ_buf *xmit = &port->info->xmit;
++ unsigned long status, remaining;
++ unsigned int new_tail;
++
++ /* Account for the characters DMA'ed since last update */
++ remaining = usart3_readl(up, TCR);
++
++ if (up->tx_dma_head < xmit->tail) {
++ /*
++ * We have wrapped around, and there's a chunk at the
++ * beginning of the buffer that has been submitted for
++ * DMA. If the ENDTX bit is set, it means that the
++ * DMA controller also has wrapped around and copied
++ * TNPR/TNCR into TPR/TCR.
++ */
++ status = usart3_readl(up, CSR);
++ BUG_ON((up->tx_dma_head != 0)
++ && (usart3_readl(up, TNCR) == 0)
++ && !(status & USART3_BIT(ENDTX)));
++ if (status & USART3_BIT(ENDTX)) {
++ BUG_ON(usart3_readl(up, TNCR) != 0);
++
++ /* The ENDTX bit might be set after we read TCR */
++ remaining = usart3_readl(up, TCR);
++
++ usart3_writel(up, TNCR, 0);
++ port->icount.tx += UART_XMIT_SIZE - xmit->tail;
++ xmit->tail = 0;
++
++ BUG_ON(remaining > up->tx_dma_head);
++ new_tail = up->tx_dma_head - remaining;
++ } else {
++ /*
++ * The DMA controller hasn't switched yet, so
++ * TCR indicates the number of bytes left
++ * until this happens.
++ */
++ new_tail = UART_XMIT_SIZE - remaining;
++ }
++ } else {
++ /* No wraparound, move the tail closer to dma_head. */
++ BUG_ON(remaining > up->tx_dma_head);
++ new_tail = up->tx_dma_head - remaining;
++ }
++
++ BUG_ON(new_tail < xmit->tail);
++ port->icount.tx += new_tail - xmit->tail;
++ xmit->tail = new_tail;
++}
++
++static inline void tx_dma_start(struct usart3_port *up)
++{
++ /* Start the PDC and enable interrupts */
++ usart3_writel(up, PTCR, USART3_BIT(TXTEN));
++ usart3_writel(up, IER, USART3_BIT(ENDTX));
++}
++
++static inline void tx_dma_stop(struct usart3_port *up)
++{
++ usart3_writel(up, PTCR, USART3_BIT(TXTDIS));
++ usart3_writel(up, IDR, USART3_BIT(ENDTX));
++}
++
++static inline unsigned int rx_dma_get_head(struct usart3_port *up)
++{
++ unsigned int head;
++ u32 status;
++
++ head = RX_BUFFER_SIZE - usart3_readl(up, RCR);
++ status = usart3_readl(up, CSR);
++ if (status & USART3_BIT(ENDRX))
++ head = RX_BUFFER_SIZE;
++
++ return head;
++}
++
++static inline int rx_dma_update_tail(struct usart3_port *up,
++ unsigned int tail)
++{
++ int again = 0;
++
++ if (!(tail & (RX_BUFFER_SIZE - 1))) {
++ u32 rnpr = up->rx_dma;
++
++ tail &= RX_BUFFER_SIZE;
++ if (!tail)
++ rnpr += RX_BUFFER_SIZE;
++
++ usart3_writel(up, RNPR, rnpr);
++ usart3_writel(up, RNCR, RX_BUFFER_SIZE);
++
++ again = 1;
++ } else
++ BUG_ON(usart3_readl(up, CSR) & USART3_BIT(ENDRX));
++
++ up->rx_tail = tail;
++
++ return again;
++}
++
++static void usart3_stop_tx(struct uart_port *port)
++{
++ struct usart3_port *up = to_usart3_port(port);
++
++ tx_dma_stop(up);
++ tx_dma_update_tail(port);
++}
++
++static void usart3_start_tx(struct uart_port *port)
++{
++ struct usart3_port *up = to_usart3_port(port);
++ struct circ_buf *xmit = &port->info->xmit;
++
++ BUG_ON(!irqs_disabled());
++
++ /*
++ * Stop the DMA engine so that we don't have to worry about race
++ * conditions when updating the various pointers and counters.
++ */
++ tx_dma_stop(up);
++
++ tx_dma_sync(port);
++ tx_dma_update_tail(port);
++
++ if (uart_circ_empty(xmit))
++ return;
++
++ usart3_writel(up, TPR, up->tx_dma + xmit->tail);
++
++ if (xmit->head > xmit->tail) {
++ usart3_writel(up, TCR, xmit->head - xmit->tail);
++ } else {
++ usart3_writel(up, TCR, UART_XMIT_SIZE - xmit->tail);
++ usart3_writel(up, TNPR, up->tx_dma);
++ usart3_writel(up, TNCR, xmit->head);
++ }
++
++ /* Keep track of what we've submitted for DMA */
++ up->tx_dma_head = xmit->head;
++
++ /* Resume operation of DMA engine. */
++ tx_dma_start(up);
++}
++
++static void usart3_stop_rx(struct uart_port *port)
++{
++ struct usart3_port *up = to_usart3_port(port);
++
++ pr_debug("usart3: stop_rx\n");
++
++ usart3_writel(up, PTCR, USART3_BIT(RXTDIS));
++ usart3_writel(up, IDR, (USART3_BIT(TIMEOUT)
++ | USART3_BIT(ENDRX)
++ | USART3_BIT(RXBRK)
++ | USART3_BIT(OVRE)
++ | USART3_BIT(FRAME)
++ | USART3_BIT(PARE)));
++}
++
++static void usart3_flush_buffer(struct uart_port *port)
++{
++ struct usart3_port *up = to_usart3_port(port);
++
++ /*
++ * Reset TX DMA state. Note that we must _always_ update TNCR
++ * before TCR, since the value in TNCR will automatically move
++ * to TCR when TCR is 0.
++ */
++ usart3_writel(up, TNCR, 0);
++ usart3_writel(up, TCR, 0);
++ up->tx_dma_head = port->info->xmit.tail;
++}
++
++/*
++ * Enable modem status interrupts
++ */
++static void usart3_enable_ms(struct uart_port *port)
++{
++ struct usart3_port *up = to_usart3_port(port);
++
++ pr_debug("usart3: enable_ms\n");
++ usart3_writel(up, IER, (USART3_BIT(RIIC)
++ | USART3_BIT(DSRIC)
++ | USART3_BIT(DCDIC)
++ | USART3_BIT(CTSIC)));
++}
++
++static inline void handle_rx_error(struct uart_port *port, u32 status)
++{
++ /*
++ * FIXME: Errors should affect the flag buffer, but due to the
++ * PDC, we don't really know which char they belong to...
++ */
++ if (status & USART3_BIT(PARE)) {
++ printk(KERN_NOTICE "usart%u: Parity error\n", port->line);
++ port->icount.parity++;
++ } else if (status & USART3_BIT(FRAME)) {
++ printk(KERN_NOTICE "usart%u: Frame error\n", port->line);
++ port->icount.frame++;
++ }
++ if (status & USART3_BIT(OVRE)) {
++ printk(KERN_NOTICE "usart%u: Overrun\n", port->line);
++ port->icount.overrun++;
++ }
++
++#ifdef SUPPORT_SYSRQ
++ port->sysrq = 0;
++#endif
++}
++
++static inline void handle_pdc_endtx(struct uart_port *port, unsigned long status)
++{
++ struct usart3_port *up = to_usart3_port(port);
++ struct circ_buf *xmit = &port->info->xmit;
++
++ tx_dma_update_tail(port);
++
++ if (uart_tx_stopped(port)) {
++ usart3_stop_tx(port);
++ printk("usart3: stopped\n");
++ return;
++ }
++
++ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
++ uart_write_wakeup(port);
++
++ if (uart_circ_empty(xmit))
++ usart3_stop_tx(port);
++
++ /*
++ * It could be that xmit is being updated right now. If so,
++ * start_tx() will be called shortly.
++ */
++ if (status & USART3_BIT(TXBUFE))
++ usart3_writel(up, IDR, USART3_BIT(ENDTX));
++}
++
++static void consume_rx_buffer(struct uart_port *port, struct pt_regs *regs)
++{
++ struct usart3_port *up = to_usart3_port(port);
++ struct tty_struct *tty = port->info->tty;
++ unsigned long head, tail;
++ int len;
++ int again;
++
++ do {
++ /*
++ * Re-arm the timeout before we decide how many
++ * characters to read.
++ */
++ usart3_writel(up, CR, USART3_BIT(STTTO));
++
++ head = rx_dma_get_head(up);
++
++ tail = up->rx_tail;
++ if (tail & RX_BUFFER_SIZE)
++ head += RX_BUFFER_SIZE;
++
++ if (head == tail)
++ break;
++
++ dma_sync_single_for_cpu(port->dev, up->rx_dma + tail,
++ head - tail, DMA_FROM_DEVICE);
++
++ if (uart_handle_sysrq_char(port, up->rx_buffer[tail],
++ regs)) {
++ tail++;
++ if (head == tail)
++ goto update_tail;
++ }
++
++ len = tty_insert_flip_string(tty, up->rx_buffer + tail,
++ head - tail);
++ port->icount.rx += len;
++ tail += len;
++ if (!(head & (RX_BUFFER_SIZE - 1)) && tail != head) {
++ /*
++ * head has wrapped, but there isn't enough
++ * room in the buffer to handle all the
++ * characters. We must recycle this buffer in
++ * order to clear the interrupt.
++ */
++ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
++ tail = head;
++ }
++
++ update_tail:
++ again = rx_dma_update_tail(up, tail);
++ } while (again);
++
++ tty_flip_buffer_push(tty);
++}
++
++/*
++ * This is the serial driver's interrupt routine
++ */
++static irqreturn_t usart3_interrupt(int irq, void *dev_id,
++ struct pt_regs *regs)
++{
++ struct uart_port *port = dev_id;
++ struct usart3_port *up = to_usart3_port(port);
++ u32 status, mask, pending;
++ irqreturn_t ret = IRQ_NONE;
++
++ spin_lock(&port->lock);
++
++ status = usart3_readl(up, CSR);
++ mask = usart3_readl(up, IMR);
++ pending = status & mask;
++ if (unlikely(!pending))
++ goto out;
++
++ ret = IRQ_HANDLED;
++
++ do {
++ /*
++ * Consume the buffer and flip buffers if necessary.
++ */
++ consume_rx_buffer(port, regs);
++
++ /* Clear any break and error flags */
++ usart3_writel(up, CR, USART3_BIT(RSTSTA));
++
++ if (pending & (USART3_BIT(OVRE)
++ | USART3_BIT(FRAME)
++ | USART3_BIT(PARE)))
++ handle_rx_error(port, status);
++
++ if (pending & USART3_BIT(RXBRK)) {
++ if (up->break_active) {
++ up->break_active = 0;
++ } else {
++ up->break_active = 1;
++ port->icount.brk++;
++ uart_handle_break(port);
++ }
++ }
++
++ if (pending & USART3_BIT(RIIC))
++ port->icount.rng++;
++ if (pending & USART3_BIT(DSRIC))
++ port->icount.dsr++;
++ if (pending & USART3_BIT(DCDIC)) {
++ port->icount.dcd++;
++ uart_handle_dcd_change
++ (port, status & USART3_BIT(DCD));
++ }
++ if (pending & USART3_BIT(CTSIC)) {
++ port->icount.cts++;
++ uart_handle_cts_change
++ (port, status & USART3_BIT(CTS));
++ }
++ if (pending & (USART3_BIT(RIIC)
++ | USART3_BIT(DSRIC)
++ | USART3_BIT(DCDIC)
++ | USART3_BIT(CTSIC)))
++ wake_up_interruptible(&port->info->delta_msr_wait);
++
++ if (pending & USART3_BIT(ENDTX))
++ handle_pdc_endtx(port, status);
++
++ status = usart3_readl(up, CSR);
++ pending = status & usart3_readl(up, IMR);
++ } while (pending);
++
++out:
++ spin_unlock(&port->lock);
++ return ret;
++}
++
++/*
++ * Return TIOCSER_TEMT when transmitter is not busy
++ */
++static unsigned int usart3_tx_empty(struct uart_port *port)
++{
++ struct usart3_port *up = to_usart3_port(port);
++ unsigned int ret = 0;
++
++ if (usart3_readl(up, CSR) & USART3_BIT(TXEMPTY))
++ ret = TIOCSER_TEMT;
++
++ pr_debug("usart3: tx_empty returned %x\n", ret);
++
++ return ret;
++}
++
++static unsigned int usart3_get_mctrl(struct uart_port *port)
++{
++ struct usart3_port *up = to_usart3_port(port);
++ unsigned int ret = 0;
++ unsigned int status;
++
++ status = usart3_readl(up, CSR);
++ if (status & USART3_BIT(DCD))
++ ret |= TIOCM_CD;
++ if (status & USART3_BIT(CTS))
++ ret |= TIOCM_CTS;
++ if (status & USART3_BIT(DSR))
++ ret |= TIOCM_DSR;
++ if (status & USART3_BIT(RI))
++ ret |= TIOCM_RI;
++
++ pr_debug("usart3: get_mctrl returned %x\n", ret);
++
++ return ret;
++}
++
++static void usart3_set_mctrl(struct uart_port *port, unsigned int mctrl)
++{
++ struct usart3_port *up = to_usart3_port(port);
++ unsigned int control = 0;
++
++ pr_debug("usart3: set_mctrl %x\n", mctrl);
++
++ if (mctrl & TIOCM_RTS)
++ control |= USART3_BIT(RTSEN);
++ else
++ control |= USART3_BIT(RTSDIS);
++
++ if (mctrl & TIOCM_DTR)
++ control |= USART3_BIT(DTREN);
++ else
++ control |= USART3_BIT(DTRDIS);
++
++ usart3_writel(up, CR, control);
++}
++
++static void usart3_break_ctl(struct uart_port *port, int break_state)
++{
++ struct usart3_port *up = to_usart3_port(port);
++
++ pr_debug("usart3: break_ctl %u\n", break_state);
++ if (break_state != 0)
++ usart3_writel(up, CR, USART3_BIT(STTBRK));
++ else
++ usart3_writel(up, CR, USART3_BIT(STPBRK));
++}
++
++static int usart3_startup(struct uart_port *port)
++{
++ struct usart3_port *up = to_usart3_port(port);
++ int ret;
++
++ pr_debug("usart3: startup\n");
++
++ up->break_active = 0;
++
++ /* Set up interrupt handler */
++ ret = request_irq(port->irq, usart3_interrupt, 0,
++ port->info->tty->name, port);
++ if (ret) {
++ printk(KERN_ERR "usart3: Unable to request irq %d\n",
++ port->irq);
++ return ret;
++ }
++
++ up->rx_dma = dma_map_single(port->dev, up->rx_buffer,
++ 2 * RX_BUFFER_SIZE, DMA_FROM_DEVICE);
++ up->tx_dma = dma_map_single(port->dev, port->info->xmit.buf,
++ UART_XMIT_SIZE, DMA_TO_DEVICE);
++
++ /* Initialize the PDC for RX (TX is done in start_tx) */
++ up->rx_tail = 0;
++ usart3_writel(up, RPR, up->rx_dma);
++ usart3_writel(up, RCR, RX_BUFFER_SIZE);
++ usart3_writel(up, RNPR, up->rx_dma + RX_BUFFER_SIZE);
++ usart3_writel(up, RNCR, RX_BUFFER_SIZE);
++ usart3_writel(up, PTCR, USART3_BIT(RXTEN));
++
++ /* Reset DMA state */
++ usart3_writel(up, TNCR, 0);
++ usart3_writel(up, TCR, 0);
++ up->tx_dma_head = port->info->xmit.tail;
++
++ /*
++ * Set a suitable timeout. 2000 bit periods corresponds to
++ * about 17 ms at 115200 bps
++ */
++ usart3_writel(up, RTOR, 2000);
++
++ /* Reset and enable receiver and transmitter */
++ usart3_writel(up, CR, (USART3_BIT(RSTRX)
++ | USART3_BIT(RSTTX)
++ | USART3_BIT(RSTSTA)));
++ usart3_writel(up, CR, (USART3_BIT(RXEN)
++ | USART3_BIT(TXEN)));
++
++ /* Enable timeout, end of rx, break and error interrupts */
++ usart3_writel(up, IER, (USART3_BIT(TIMEOUT)
++ | USART3_BIT(ENDRX)
++ | USART3_BIT(RXBRK)
++ | USART3_BIT(OVRE)
++ | USART3_BIT(FRAME)
++ | USART3_BIT(PARE)));
++
++ /* Arm the timeout counter */
++ usart3_writel(up, CR, USART3_BIT(STTTO));
++
++ return 0;
++}
++
++static void usart3_shutdown(struct uart_port *port)
++{
++ struct usart3_port *up = to_usart3_port(port);
++
++ pr_debug("usart3: shutdown\n");
++
++ /* Disable all interrupts and reset any error flags */
++ usart3_writel(up, IDR, -1L);
++ usart3_writel(up, CR, USART3_BIT(RSTSTA));
++
++ dma_unmap_single(port->dev, up->rx_dma, 2 * RX_BUFFER_SIZE,
++ DMA_FROM_DEVICE);
++ dma_unmap_single(port->dev, up->tx_dma, UART_XMIT_SIZE,
++ DMA_TO_DEVICE);
++
++ free_irq(port->irq, port);
++}
++
++static void usart3_set_termios(struct uart_port *port, struct termios *termios,
++ struct termios *old)
++{
++ struct usart3_port *up = to_usart3_port(port);
++ unsigned int baud, quot, mode = 0;
++ unsigned int imr, flags;
++
++ pr_debug("usart3: set_termios\n");
++
++ switch (termios->c_cflag & CSIZE) {
++ case CS5:
++ mode |= USART3_BF(CHRL, USART3_CHRL_5);
++ break;
++ case CS6:
++ mode |= USART3_BF(CHRL, USART3_CHRL_6);
++ break;
++ case CS7:
++ mode |= USART3_BF(CHRL, USART3_CHRL_7);
++ break;
++ default:
++ mode |= USART3_BF(CHRL, USART3_CHRL_8);
++ break;
++ }
++
++ if (termios->c_cflag & CSTOPB)
++ mode |= USART3_BF(NBSTOP, USART3_NBSTOP_2);
++
++ if (termios->c_cflag & PARENB) {
++ if (termios->c_cflag & PARODD)
++ mode |= USART3_BF(PAR, USART3_PAR_ODD);
++ else
++ mode |= USART3_BF(PAR, USART3_PAR_EVEN);
++ } else {
++ mode |= USART3_BF(PAR, USART3_PAR_NONE);
++ }
++
++ /*
++ * Ask the core to calculate the divisor for us.
++ */
++ baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk / 16);
++ quot = uart_get_divisor(port, baud);
++
++ /* Bits to ignore, timeout, etc. TBD */
++
++ /*
++ * Save and disable interrupts
++ */
++ spin_lock_irqsave(&port->lock, flags);
++ imr = usart3_readl(up, IMR);
++ usart3_writel(up, IDR, -1L);
++ spin_unlock_irqrestore(&port->lock, flags);
++
++ /*
++ * Make sure transmitter is empty. If BRGR == 0, it is safest
++ * to do a reset, since waiting for the transmitter to be
++ * empty will take forever.
++ */
++ if (usart3_readl(up, BRGR) != 0) {
++ while (!(usart3_readl(up, CSR) & USART3_BIT(TXRDY)))
++ barrier();
++ } else {
++ usart3_writel(up, CR, (USART3_BIT(RSTTX)
++ | USART3_BIT(RSTRX)));
++ }
++
++ pr_debug("usart3: Setting BRGR to %u (baud rate %u)...\n", quot, baud);
++
++ /* Disable receiver and transmitter */
++ usart3_writel(up, CR, (USART3_BIT(TXDIS)
++ | USART3_BIT(RXDIS)));
++
++ /* Set the parity, stop bits and data size */
++ usart3_writel(up, MR, mode);
++
++ /* Set the baud rate and enable receiver and transmitter */
++ usart3_writel(up, BRGR, quot);
++ usart3_writel(up, CR, (USART3_BIT(TXEN)
++ | USART3_BIT(RXEN)));
++
++ /* Restore interrupts */
++ usart3_writel(up, IER, imr);
++}
++
++static const char *usart3_type(struct uart_port *port)
++{
++ return "USART3";
++}
++
++static void usart3_release_port(struct uart_port *port)
++{
++ pr_debug("usart3: release_port\n");
++ iounmap(port->membase);
++ port->flags |= UPF_IOREMAP;
++}
++
++static int usart3_request_port(struct uart_port *port)
++{
++ struct usart3_port *up = to_usart3_port(port);
++
++ /* TODO: remove this */
++ pr_debug("usart3: request_port\n");
++ if (port->flags & UPF_IOREMAP) {
++ port->membase = ioremap(port->mapbase, up->mapsize);
++ up->regs = port->membase;
++ port->flags &= ~UPF_IOREMAP;
++ }
++ return 0;
++}
++
++static void usart3_config_port(struct uart_port *port, int flags)
++{
++ pr_debug("usart3: config_port\n");
++ if (flags & UART_CONFIG_TYPE) {
++ if (usart3_request_port(port) == 0)
++ port->type = PORT_USART3;
++ }
++}
++
++static int usart3_verify_port(struct uart_port *port, struct serial_struct *ser)
++{
++ int ret = 0;
++
++ if (ser->type != PORT_UNKNOWN && ser->type != PORT_USART3)
++ ret = -EINVAL;
++ if (port->irq != ser->irq)
++ ret = -EINVAL;
++ if (ser->io_type != SERIAL_IO_MEM)
++ ret = -EINVAL;
++ if (port->uartclk / 16 != ser->baud_base)
++ ret = -EINVAL;
++ if ((void *)port->mapbase != ser->iomem_base)
++ ret = -EINVAL;
++ if (ser->hub6 != 0)
++ ret = -EINVAL;
++
++ pr_debug("usart3_verify_port returned %d\n", ret);
++
++ return ret;
++}
++
++static struct uart_ops usart3_pops = {
++ .tx_empty = usart3_tx_empty,
++ .set_mctrl = usart3_set_mctrl,
++ .get_mctrl = usart3_get_mctrl,
++ .stop_tx = usart3_stop_tx,
++ .start_tx = usart3_start_tx,
++ .stop_rx = usart3_stop_rx,
++ .enable_ms = usart3_enable_ms,
++ .break_ctl = usart3_break_ctl,
++ .startup = usart3_startup,
++ .shutdown = usart3_shutdown,
++ .flush_buffer = usart3_flush_buffer,
++ .set_termios = usart3_set_termios,
++ .type = usart3_type,
++ .release_port = usart3_release_port,
++ .request_port = usart3_request_port,
++ .config_port = usart3_config_port,
++ .verify_port = usart3_verify_port,
++};
++
++static int __devinit initialize_port(struct usart3_port *up,
++ struct platform_device *pdev)
++{
++ struct uart_port *port = &up->uart;
++ struct resource *regs;
++
++ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if (!regs)
++ return -ENXIO;
++
++ spin_lock_init(&port->lock);
++
++ up->mck = clk_get(&pdev->dev, "usart");
++ if (IS_ERR(up->mck))
++ return PTR_ERR(up->mck);
++ clk_enable(up->mck);
++
++ port->mapbase = regs->start;
++ up->mapsize = regs->end - regs->start + 1;
++ port->irq = platform_get_irq(pdev, 0);
++
++ port->uartclk = clk_get_rate(up->mck);
++ port->iotype = SERIAL_IO_MEM;
++ port->flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP;
++ port->ops = &usart3_pops;
++ port->line = pdev->id;
++ port->dev = &pdev->dev;
++
++ return 0;
++}
++
++static struct usart3_port usart3_ports[NR_PORTS];
++
++#ifdef CONFIG_SERIAL_ATMEL_CONSOLE
++
++static void usart3_console_write(struct console *console, const char *string,
++ unsigned int len)
++{
++ struct usart3_port *up = &usart3_ports[console->index];
++ unsigned int imr, i;
++ unsigned long flags, ptsr;
++
++ /*
++ * Save IMR, then disable interrupts
++ */
++ local_irq_save(flags);
++ imr = usart3_readl(up, IMR);
++ usart3_writel(up, IDR, ~0UL);
++ local_irq_restore(flags);
++
++ /*
++ * Save PDC state and disable PDC transmission
++ */
++ ptsr = usart3_readl(up, PTSR);
++ usart3_writel(up, PTCR, USART3_BIT(TXTDIS));
++
++ /*
++ * Now, do each character
++ */
++ for (i = 0; i < len; i++, string++) {
++ char c = *string;
++
++ /*
++ * If we're sending LF, send CR first...
++ */
++ if (c == '\n') {
++ while (!(usart3_readl(up, CSR)
++ & USART3_BIT(TXRDY)))
++ ;
++ usart3_writel(up, THR, '\r');
++ }
++ while (!(usart3_readl(up, CSR) & USART3_BIT(TXRDY)))
++ ;
++ usart3_writel(up, THR, c);
++ }
++
++ /*
++ * Wait for transmitter to become empty and restore the IMR
++ * and PDC state.
++ */
++ while (!(usart3_readl(up, CSR) & USART3_BIT(TXRDY)))
++ ;
++
++ usart3_writel(up, PTCR, ptsr & USART3_BIT(TXTEN));
++ usart3_writel(up, IER, imr);
++}
++
++static int __init usart3_console_setup(struct console *console,
++ char *options)
++{
++ struct platform_device *pdev;
++ struct usart3_port *up;
++ struct uart_port *port;
++ int baud = 115200;
++ int bits = 8;
++ int parity = 'n';
++ int flow = 'n';
++ int ret;
++
++ if (console->index >= NR_PORTS) {
++ printk(KERN_ERR
++ "Can't use USART%u for console: index >= NR_PORTS\n",
++ console->index);
++ return -ENODEV;
++ }
++
++ pdev = at91_default_console_device;
++ if (!pdev)
++ return -ENXIO;
++
++ up = &usart3_ports[console->index];
++ port = &up->uart;
++
++ ret = initialize_port(up, pdev);
++ if (ret)
++ return ret;
++
++ port->membase = ioremap(port->mapbase, up->mapsize);
++ ret = -ENOMEM;
++ if (!port->membase)
++ goto out_disable_clk;
++
++ up->regs = port->membase;
++
++ /* Set a fixed baud rate for now */
++ usart3_writel(up, BRGR, 2);
++
++ /* Make sure all interrupts are disabled and reset/enable the USART */
++ usart3_writel(up, IDR, -1L);
++ usart3_writel(up, CR, (USART3_BIT(RSTRX)
++ | USART3_BIT(RSTTX)
++ | USART3_BIT(RSTSTA)));
++ usart3_writel(up, CR, (USART3_BIT(RXEN)
++ | USART3_BIT(TXEN)));
++
++ if (options)
++ uart_parse_options(options, &baud, &parity, &bits, &flow);
++
++ return uart_set_options(port, console, baud, parity, bits, flow);
++
++out_disable_clk:
++ clk_disable(up->mck);
++ clk_put(up->mck);
++ return ret;
++}
++
++static struct uart_driver usart3_reg;
++static struct console usart3_console = {
++ .name = "ttyUS",
++ .write = usart3_console_write,
++ .device = uart_console_device,
++ .setup = usart3_console_setup,
++ .flags = CON_PRINTBUFFER,
++ .index = -1,
++ .data = &usart3_reg,
++};
++
++static int __init usart3_console_init(void)
++{
++ register_console(&usart3_console);
++ return 0;
++}
++console_initcall(usart3_console_init);
++
++#define USART3_CONSOLE &usart3_console
++
++#else
++#define USART3_CONSOLE NULL
++#endif
++
++static struct uart_driver usart3_reg = {
++ .owner = THIS_MODULE,
++ .driver_name = "serial",
++ .dev_name = "ttyUS",
++ .major = SERIAL_USART3_MAJOR,
++ .minor = MINOR_START,
++ .nr = NR_PORTS,
++ .cons = USART3_CONSOLE,
++};
++
++static int usart3_serial_suspend(struct platform_device *pdev,
++ pm_message_t state)
++{
++ struct usart3_port *port = platform_get_drvdata(pdev);
++ int retval = 0;
++
++ if (port)
++ retval = uart_suspend_port(&usart3_reg, &port->uart);
++
++ return retval;
++}
++
++static int usart3_serial_resume(struct platform_device *pdev)
++{
++ struct usart3_port *port = platform_get_drvdata(pdev);
++ int retval = 0;
++
++ if (port)
++ retval = uart_resume_port(&usart3_reg, &port->uart);
++
++ return retval;
++}
++
++static int __devinit usart3_serial_probe(struct platform_device *pdev)
++{
++ struct usart3_port *up;
++ int ret;
++
++ if (pdev->id >= NR_PORTS) {
++ printk(KERN_WARNING
++ "Ignoring USART%u, as NR_PORTS is only %u\n",
++ pdev->id, NR_PORTS);
++ return -ENOMEM;
++ }
++
++ up = &usart3_ports[pdev->id];
++
++ /*
++ * If the port has already been set up as a console, we
++ * shouldn't enable it again.
++ */
++ if (!up->uart.uartclk) {
++ ret = initialize_port(up, pdev);
++ if (ret)
++ goto out;
++ }
++
++ /*
++ * The RX buffer must be cacheline aligned. If it's not,
++ * invalidating the cache could be disastrous...
++ *
++ * Fortunately, kmalloc() always returns cache-aligned memory.
++ */
++ ret = -ENOMEM;
++ up->rx_buffer = kmalloc(2 * RX_BUFFER_SIZE, GFP_KERNEL);
++ if (!up->rx_buffer)
++ goto out_disable_clk;
++
++ ret = uart_add_one_port(&usart3_reg, &up->uart);
++ if (ret)
++ goto out_free_rx_buffer;
++
++ platform_set_drvdata(pdev, up);
++
++ return 0;
++
++out_free_rx_buffer:
++ kfree(up->rx_buffer);
++out_disable_clk:
++ clk_disable(up->mck);
++ clk_put(up->mck);
++out:
++ return ret;
++}
++
++static int __devexit usart3_serial_remove(struct platform_device *pdev)
++{
++ struct usart3_port *port = platform_get_drvdata(pdev);
++ int retval = 0;
++
++ platform_set_drvdata(pdev, NULL);
++
++ if (port) {
++ retval = uart_remove_one_port(&usart3_reg, &port->uart);
++ clk_disable(port->mck);
++ clk_put(port->mck);
++ kfree(port->rx_buffer);
++ kfree(port);
++ }
++
++ return retval;
++}
++
++static struct platform_driver usart3_serial_driver = {
++ .probe = usart3_serial_probe,
++ .remove = __devexit_p(usart3_serial_remove),
++ .suspend = usart3_serial_suspend,
++ .resume = usart3_serial_resume,
++ .driver = {
++ .name = "usart",
++ },
++};
++
++static int __init usart3_init(void)
++{
++ int ret;
++
++ printk(KERN_INFO "Serial: Atmel USART3 driver\n");
++
++ ret = uart_register_driver(&usart3_reg);
++ if (ret)
++ return ret;
++
++ ret = platform_driver_register(&usart3_serial_driver);
++ if (ret)
++ uart_unregister_driver(&usart3_reg);
++
++ return ret;
++}
++
++static void __exit usart3_exit(void)
++{
++ platform_driver_unregister(&usart3_serial_driver);
++ uart_unregister_driver(&usart3_reg);
++}
++
++module_init(usart3_init);
++module_exit(usart3_exit);
++
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("Atmel USART3 serial driver");
++MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
+Index: linux-2.6.18-avr32/drivers/serial/atmel_usart.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.18-avr32/drivers/serial/atmel_usart.h 2006-11-02 16:37:02.000000000 +0100
+@@ -0,0 +1,290 @@
++/*
++ * Register definitions for USART3
++ *
++ * Copyright (C) 2005-2006 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++#ifndef __ASM_AVR32_USART3_H__
++#define __ASM_AVR32_USART3_H__
++
++/* USART3 register offsets */
++#define USART3_CR 0x0000
++#define USART3_MR 0x0004
++#define USART3_IER 0x0008
++#define USART3_IDR 0x000c
++#define USART3_IMR 0x0010
++#define USART3_CSR 0x0014
++#define USART3_RHR 0x0018
++#define USART3_THR 0x001c
++#define USART3_BRGR 0x0020
++#define USART3_RTOR 0x0024
++#define USART3_TTGR 0x0028
++#define USART3_FIDI 0x0040
++#define USART3_NER 0x0044
++#define USART3_XXR 0x0048
++#define USART3_IFR 0x004c
++
++/* PDC register offsets */
++#define USART3_RPR 0x100
++#define USART3_RCR 0x104
++#define USART3_TPR 0x108
++#define USART3_TCR 0x10c
++#define USART3_RNPR 0x110
++#define USART3_RNCR 0x114
++#define USART3_TNPR 0x118
++#define USART3_TNCR 0x11c
++#define USART3_PTCR 0x120
++#define USART3_PTSR 0x124
++
++/* Bitfields in CR */
++#define USART3_RSTRX_OFFSET 2
++#define USART3_RSTRX_SIZE 1
++#define USART3_RSTTX_OFFSET 3
++#define USART3_RSTTX_SIZE 1
++#define USART3_RXEN_OFFSET 4
++#define USART3_RXEN_SIZE 1
++#define USART3_RXDIS_OFFSET 5
++#define USART3_RXDIS_SIZE 1
++#define USART3_TXEN_OFFSET 6
++#define USART3_TXEN_SIZE 1
++#define USART3_TXDIS_OFFSET 7
++#define USART3_TXDIS_SIZE 1
++#define USART3_RSTSTA_OFFSET 8
++#define USART3_RSTSTA_SIZE 1
++#define USART3_STTBRK_OFFSET 9
++#define USART3_STTBRK_SIZE 1
++#define USART3_STPBRK_OFFSET 10
++#define USART3_STPBRK_SIZE 1
++#define USART3_STTTO_OFFSET 11
++#define USART3_STTTO_SIZE 1
++#define USART3_SENDA_OFFSET 12
++#define USART3_SENDA_SIZE 1
++#define USART3_RSTIT_OFFSET 13
++#define USART3_RSTIT_SIZE 1
++#define USART3_RSTNACK_OFFSET 14
++#define USART3_RSTNACK_SIZE 1
++#define USART3_RETTO_OFFSET 15
++#define USART3_RETTO_SIZE 1
++#define USART3_DTREN_OFFSET 16
++#define USART3_DTREN_SIZE 1
++#define USART3_DTRDIS_OFFSET 17
++#define USART3_DTRDIS_SIZE 1
++#define USART3_RTSEN_OFFSET 18
++#define USART3_RTSEN_SIZE 1
++#define USART3_RTSDIS_OFFSET 19
++#define USART3_RTSDIS_SIZE 1
++#define USART3_COMM_TX_OFFSET 30
++#define USART3_COMM_TX_SIZE 1
++#define USART3_COMM_RX_OFFSET 31
++#define USART3_COMM_RX_SIZE 1
++
++/* Bitfields in MR */
++#define USART3_USART_MODE_OFFSET 0
++#define USART3_USART_MODE_SIZE 4
++#define USART3_USCLKS_OFFSET 4
++#define USART3_USCLKS_SIZE 2
++#define USART3_CHRL_OFFSET 6
++#define USART3_CHRL_SIZE 2
++#define USART3_SYNC_OFFSET 8
++#define USART3_SYNC_SIZE 1
++#define USART3_PAR_OFFSET 9
++#define USART3_PAR_SIZE 3
++#define USART3_NBSTOP_OFFSET 12
++#define USART3_NBSTOP_SIZE 2
++#define USART3_CHMODE_OFFSET 14
++#define USART3_CHMODE_SIZE 2
++#define USART3_MSBF_OFFSET 16
++#define USART3_MSBF_SIZE 1
++#define USART3_MODE9_OFFSET 17
++#define USART3_MODE9_SIZE 1
++#define USART3_CLKO_OFFSET 18
++#define USART3_CLKO_SIZE 1
++#define USART3_OVER_OFFSET 19
++#define USART3_OVER_SIZE 1
++#define USART3_INACK_OFFSET 20
++#define USART3_INACK_SIZE 1
++#define USART3_DSNACK_OFFSET 21
++#define USART3_DSNACK_SIZE 1
++#define USART3_MAX_ITERATION_OFFSET 24
++#define USART3_MAX_ITERATION_SIZE 3
++#define USART3_FILTER_OFFSET 28
++#define USART3_FILTER_SIZE 1
++
++/* Bitfields in CSR */
++#define USART3_RXRDY_OFFSET 0
++#define USART3_RXRDY_SIZE 1
++#define USART3_TXRDY_OFFSET 1
++#define USART3_TXRDY_SIZE 1
++#define USART3_RXBRK_OFFSET 2
++#define USART3_RXBRK_SIZE 1
++#define USART3_ENDRX_OFFSET 3
++#define USART3_ENDRX_SIZE 1
++#define USART3_ENDTX_OFFSET 4
++#define USART3_ENDTX_SIZE 1
++#define USART3_OVRE_OFFSET 5
++#define USART3_OVRE_SIZE 1
++#define USART3_FRAME_OFFSET 6
++#define USART3_FRAME_SIZE 1
++#define USART3_PARE_OFFSET 7
++#define USART3_PARE_SIZE 1
++#define USART3_TIMEOUT_OFFSET 8
++#define USART3_TIMEOUT_SIZE 1
++#define USART3_TXEMPTY_OFFSET 9
++#define USART3_TXEMPTY_SIZE 1
++#define USART3_ITERATION_OFFSET 10
++#define USART3_ITERATION_SIZE 1
++#define USART3_TXBUFE_OFFSET 11
++#define USART3_TXBUFE_SIZE 1
++#define USART3_RXBUFF_OFFSET 12
++#define USART3_RXBUFF_SIZE 1
++#define USART3_NACK_OFFSET 13
++#define USART3_NACK_SIZE 1
++#define USART3_RIIC_OFFSET 16
++#define USART3_RIIC_SIZE 1
++#define USART3_DSRIC_OFFSET 17
++#define USART3_DSRIC_SIZE 1
++#define USART3_DCDIC_OFFSET 18
++#define USART3_DCDIC_SIZE 1
++#define USART3_CTSIC_OFFSET 19
++#define USART3_CTSIC_SIZE 1
++#define USART3_RI_OFFSET 20
++#define USART3_RI_SIZE 1
++#define USART3_DSR_OFFSET 21
++#define USART3_DSR_SIZE 1
++#define USART3_DCD_OFFSET 22
++#define USART3_DCD_SIZE 1
++#define USART3_CTS_OFFSET 23
++#define USART3_CTS_SIZE 1
++
++/* Bitfields in RHR */
++#define USART3_RXCHR_OFFSET 0
++#define USART3_RXCHR_SIZE 9
++
++/* Bitfields in THR */
++#define USART3_TXCHR_OFFSET 0
++#define USART3_TXCHR_SIZE 9
++
++/* Bitfields in BRGR */
++#define USART3_CD_OFFSET 0
++#define USART3_CD_SIZE 16
++
++/* Bitfields in RTOR */
++#define USART3_TO_OFFSET 0
++#define USART3_TO_SIZE 16
++
++/* Bitfields in TTGR */
++#define USART3_TG_OFFSET 0
++#define USART3_TG_SIZE 8
++
++/* Bitfields in FIDI */
++#define USART3_FI_DI_RATIO_OFFSET 0
++#define USART3_FI_DI_RATIO_SIZE 11
++
++/* Bitfields in NER */
++#define USART3_NB_ERRORS_OFFSET 0
++#define USART3_NB_ERRORS_SIZE 8
++
++/* Bitfields in XXR */
++#define USART3_XOFF_OFFSET 0
++#define USART3_XOFF_SIZE 8
++#define USART3_XON_OFFSET 8
++#define USART3_XON_SIZE 8
++
++/* Bitfields in IFR */
++#define USART3_IRDA_FILTER_OFFSET 0
++#define USART3_IRDA_FILTER_SIZE 8
++
++/* Bitfields in PTCR/PTSR (PDC) */
++#define USART3_RXTEN_OFFSET 0
++#define USART3_RXTEN_SIZE 1
++#define USART3_RXTDIS_OFFSET 1
++#define USART3_RXTDIS_SIZE 1
++#define USART3_TXTEN_OFFSET 8
++#define USART3_TXTEN_SIZE 1
++#define USART3_TXTDIS_OFFSET 9
++#define USART3_TXTDIS_SIZE 1
++
++/* Constants for USART_MODE */
++#define USART3_USART_MODE_NORMAL 0
++#define USART3_USART_MODE_RS485 1
++#define USART3_USART_MODE_HARDWARE 2
++#define USART3_USART_MODE_MODEM 3
++#define USART3_USART_MODE_ISO7816_T0 4
++#define USART3_USART_MODE_ISO7816_T1 6
++#define USART3_USART_MODE_IRDA 8
++
++/* Constants for USCLKS */
++#define USART3_USCLKS_MCK 0
++#define USART3_USCLKS_MCK_DIV 1
++#define USART3_USCLKS_SCK 3
++
++/* Constants for CHRL */
++#define USART3_CHRL_5 0
++#define USART3_CHRL_6 1
++#define USART3_CHRL_7 2
++#define USART3_CHRL_8 3
++
++/* Constants for PAR */
++#define USART3_PAR_EVEN 0
++#define USART3_PAR_ODD 1
++#define USART3_PAR_SPACE 2
++#define USART3_PAR_MARK 3
++#define USART3_PAR_NONE 4
++#define USART3_PAR_MULTI 6
++
++/* Constants for NBSTOP */
++#define USART3_NBSTOP_1 0
++#define USART3_NBSTOP_1_5 1
++#define USART3_NBSTOP_2 2
++
++/* Constants for CHMODE */
++#define USART3_CHMODE_NORMAL 0
++#define USART3_CHMODE_ECHO 1
++#define USART3_CHMODE_LOCAL_LOOP 2
++#define USART3_CHMODE_REMOTE_LOOP 3
++
++/* Constants for MSBF */
++#define USART3_MSBF_LSBF 0
++#define USART3_MSBF_MSBF 1
++
++/* Constants for OVER */
++#define USART3_OVER_X16 0
++#define USART3_OVER_X8 1
++
++/* Constants for CD */
++#define USART3_CD_DISABLE 0
++#define USART3_CD_BYPASS 1
++
++/* Constants for TO */
++#define USART3_TO_DISABLE 0
++
++/* Constants for TG */
++#define USART3_TG_DISABLE 0
++
++/* Constants for FI_DI_RATIO */
++#define USART3_FI_DI_RATIO_DISABLE 0
++
++/* Bit manipulation macros */
++#define USART3_BIT(name) \
++ (1 << USART3_##name##_OFFSET)
++#define USART3_BF(name,value) \
++ (((value) & ((1 << USART3_##name##_SIZE) - 1)) \
++ << USART3_##name##_OFFSET)
++#define USART3_BFEXT(name,value) \
++ (((value) >> USART3_##name##_OFFSET) \
++ & ((1 << USART3_##name##_SIZE) - 1))
++#define USART3_BFINS(name,value,old) \
++ (((old) & ~(((1 << USART3_##name##_SIZE) - 1) \
++ << USART3_##name##_OFFSET)) \
++ | USART3_BF(name,value))
++
++/* Register access macros */
++#define usart3_readl(port,reg) \
++ __raw_readl((port)->regs + USART3_##reg)
++#define usart3_writel(port,reg,value) \
++ __raw_writel((value), (port)->regs + USART3_##reg)
++
++#endif /* __ASM_AVR32_USART3_H__ */
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-05 10:47:46 +0000