1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
163 lines
3.3 KiB
C
163 lines
3.3 KiB
C
/*
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* (C) Copyright 2002
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* Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Alex Zuepke <azu@sysgo.de>
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*
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* Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <SA-1100.h>
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#include <serial.h>
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#include <linux/compiler.h>
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DECLARE_GLOBAL_DATA_PTR;
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static void sa1100_serial_setbrg(void)
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{
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unsigned int reg = 0;
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if (gd->baudrate == 1200)
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reg = 191;
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else if (gd->baudrate == 9600)
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reg = 23;
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else if (gd->baudrate == 19200)
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reg = 11;
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else if (gd->baudrate == 38400)
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reg = 5;
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else if (gd->baudrate == 57600)
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reg = 3;
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else if (gd->baudrate == 115200)
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reg = 1;
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else
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hang ();
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#ifdef CONFIG_SERIAL1
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/* SA1110 uart function */
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Ser1SDCR0 |= SDCR0_SUS;
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/* Wait until port is ready ... */
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while(Ser1UTSR1 & UTSR1_TBY) {}
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/* init serial serial 1 */
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Ser1UTCR3 = 0x00;
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Ser1UTSR0 = 0xff;
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Ser1UTCR0 = ( UTCR0_1StpBit | UTCR0_8BitData );
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Ser1UTCR1 = 0;
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Ser1UTCR2 = (u32)reg;
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Ser1UTCR3 = ( UTCR3_RXE | UTCR3_TXE );
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#elif defined(CONFIG_SERIAL3)
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/* Wait until port is ready ... */
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while (Ser3UTSR1 & UTSR1_TBY) {
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}
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/* init serial serial 3 */
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Ser3UTCR3 = 0x00;
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Ser3UTSR0 = 0xff;
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Ser3UTCR0 = (UTCR0_1StpBit | UTCR0_8BitData);
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Ser3UTCR1 = 0;
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Ser3UTCR2 = (u32) reg;
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Ser3UTCR3 = (UTCR3_RXE | UTCR3_TXE);
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#else
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#error "Bad: you didn't configured serial ..."
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#endif
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}
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/*
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* Initialise the serial port with the given baudrate. The settings
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* are always 8 data bits, no parity, 1 stop bit, no start bits.
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*
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*/
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static int sa1100_serial_init(void)
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{
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serial_setbrg ();
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return (0);
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}
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/*
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* Output a single byte to the serial port.
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*/
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static void sa1100_serial_putc(const char c)
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{
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#ifdef CONFIG_SERIAL1
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/* wait for room in the tx FIFO on SERIAL1 */
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while ((Ser1UTSR0 & UTSR0_TFS) == 0);
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Ser1UTDR = c;
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#elif defined(CONFIG_SERIAL3)
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/* wait for room in the tx FIFO on SERIAL3 */
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while ((Ser3UTSR0 & UTSR0_TFS) == 0);
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Ser3UTDR = c;
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#endif
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/* If \n, also do \r */
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if (c == '\n')
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serial_putc ('\r');
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}
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/*
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* Read a single byte from the serial port. Returns 1 on success, 0
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* otherwise. When the function is succesfull, the character read is
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* written into its argument c.
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*/
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static int sa1100_serial_tstc(void)
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{
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#ifdef CONFIG_SERIAL1
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return Ser1UTSR1 & UTSR1_RNE;
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#elif defined(CONFIG_SERIAL3)
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return Ser3UTSR1 & UTSR1_RNE;
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#endif
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}
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/*
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* Read a single byte from the serial port. Returns 1 on success, 0
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* otherwise. When the function is succesfull, the character read is
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* written into its argument c.
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*/
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static int sa1100_serial_getc(void)
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{
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#ifdef CONFIG_SERIAL1
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while (!(Ser1UTSR1 & UTSR1_RNE));
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return (char) Ser1UTDR & 0xff;
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#elif defined(CONFIG_SERIAL3)
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while (!(Ser3UTSR1 & UTSR1_RNE));
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return (char) Ser3UTDR & 0xff;
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#endif
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}
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static struct serial_device sa1100_serial_drv = {
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.name = "sa1100_serial",
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.start = sa1100_serial_init,
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.stop = NULL,
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.setbrg = sa1100_serial_setbrg,
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.putc = sa1100_serial_putc,
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.puts = default_serial_puts,
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.getc = sa1100_serial_getc,
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.tstc = sa1100_serial_tstc,
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};
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void sa1100_serial_initialize(void)
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{
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serial_register(&sa1100_serial_drv);
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}
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__weak struct serial_device *default_serial_console(void)
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{
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return &sa1100_serial_drv;
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}
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