diff options
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/Makefile | 1 | ||||
| -rw-r--r-- | drivers/serial/ns9750_serial.c | 218 | ||||
| -rw-r--r-- | drivers/serial/serial.c | 2 |
3 files changed, 0 insertions, 221 deletions
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile index 5e8b648..de3f471 100644 --- a/drivers/serial/Makefile +++ b/drivers/serial/Makefile @@ -33,7 +33,6 @@ COBJS-$(CONFIG_ARM_DCC) += arm_dcc.o COBJS-$(CONFIG_ATMEL_USART) += atmel_usart.o COBJS-$(CONFIG_LPC32XX_HSUART) += lpc32xx_hsuart.o COBJS-$(CONFIG_MCFUART) += mcfuart.o -COBJS-$(CONFIG_NS9750_UART) += ns9750_serial.o COBJS-$(CONFIG_OPENCORES_YANU) += opencores_yanu.o COBJS-$(CONFIG_SYS_NS16550) += ns16550.o COBJS-$(CONFIG_S3C64XX) += s3c64xx.o diff --git a/drivers/serial/ns9750_serial.c b/drivers/serial/ns9750_serial.c deleted file mode 100644 index 85fc68a..0000000 --- a/drivers/serial/ns9750_serial.c +++ /dev/null @@ -1,218 +0,0 @@ -/*********************************************************************** - * - * Copyright (C) 2004 by FS Forth-Systeme GmbH. - * All rights reserved. - * - * $Id: ns9750_serial.c,v 1.1 2004/02/16 10:37:20 mpietrek Exp $ - * @Author: Markus Pietrek - * @Descr: Serial driver for the NS9750. Only one UART is supported yet. - * @References: [1] NS9750 Hardware Reference/December 2003 - * @TODO: Implement Character GAP Timer when chip is fixed for PLL bypass - * - * 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 - * - ***********************************************************************/ - -#include <common.h> - -#include "ns9750_bbus.h" /* for GPIOs */ -#include "ns9750_ser.h" /* for serial configuration */ - -DECLARE_GLOBAL_DATA_PTR; - -#if !defined(CONFIG_CONS_INDEX) -#error "No console index specified." -#endif - -#define CONSOLE CONFIG_CONS_INDEX - -static unsigned int calcBitrateRegister( void ); -static unsigned int calcRxCharGapRegister( void ); - -static char cCharsAvailable; /* Numbers of chars in unCharCache */ -static unsigned int unCharCache; /* unCharCache is only valid if - * cCharsAvailable > 0 */ - -/*********************************************************************** - * @Function: serial_init - * @Return: 0 - * @Descr: configures GPIOs and UART. Requires BBUS Master Reset turned off - ***********************************************************************/ - -static int ns9750_serial_init(void) -{ - unsigned int aunGPIOTxD[] = { 0, 8, 40, 44 }; - unsigned int aunGPIORxD[] = { 1, 9, 41, 45 }; - - cCharsAvailable = 0; - - /* configure TxD and RxD pins for their special function */ - set_gpio_cfg_reg_val( aunGPIOTxD[ CONSOLE ], - NS9750_GPIO_CFG_FUNC_0 | NS9750_GPIO_CFG_OUTPUT ); - set_gpio_cfg_reg_val( aunGPIORxD[ CONSOLE ], - NS9750_GPIO_CFG_FUNC_0 | NS9750_GPIO_CFG_INPUT ); - - /* configure serial engine */ - *get_ser_reg_addr_channel( NS9750_SER_CTRL_A, CONSOLE ) = - NS9750_SER_CTRL_A_CE | - NS9750_SER_CTRL_A_STOP | - NS9750_SER_CTRL_A_WLS_8; - - serial_setbrg(); - - *get_ser_reg_addr_channel( NS9750_SER_CTRL_B, CONSOLE ) = - NS9750_SER_CTRL_B_RCGT; - - return 0; -} - -/*********************************************************************** - * @Function: serial_putc - * @Return: n/a - * @Descr: writes one character to the FIFO. Blocks until FIFO is not full - ***********************************************************************/ - -static void ns9750_serial_putc(const char c) -{ - if (c == '\n') - serial_putc( '\r' ); - - while (!(*get_ser_reg_addr_channel( NS9750_SER_STAT_A, CONSOLE) & - NS9750_SER_STAT_A_TRDY ) ) { - /* do nothing, wait for characters in FIFO sent */ - } - - *(volatile char*) get_ser_reg_addr_channel( NS9750_SER_FIFO, - CONSOLE) = c; -} - -/*********************************************************************** - * @Function: serial_getc - * @Return: the character read - * @Descr: performs only 8bit accesses to the FIFO. No error handling - ***********************************************************************/ - -static int ns9750_serial_getc(void) -{ - int i; - - while (!serial_tstc() ) { - /* do nothing, wait for incoming characters */ - } - - /* at least one character in unCharCache */ - i = (int) (unCharCache & 0xff); - - unCharCache >>= 8; - cCharsAvailable--; - - return i; -} - -/*********************************************************************** - * @Function: serial_tstc - * @Return: 0 if no input available, otherwise != 0 - * @Descr: checks for incoming FIFO not empty. Stores the incoming chars in - * unCharCache and the numbers of characters in cCharsAvailable - ***********************************************************************/ - -static int ns9750_serial_tstc(void) -{ - unsigned int unRegCache; - - if ( cCharsAvailable ) - return 1; - - unRegCache = *get_ser_reg_addr_channel( NS9750_SER_STAT_A,CONSOLE ); - if( unRegCache & NS9750_SER_STAT_A_RBC ) { - *get_ser_reg_addr_channel( NS9750_SER_STAT_A, CONSOLE ) = - NS9750_SER_STAT_A_RBC; - unRegCache = *get_ser_reg_addr_channel( NS9750_SER_STAT_A, - CONSOLE ); - } - - if ( unRegCache & NS9750_SER_STAT_A_RRDY ) { - cCharsAvailable = (unRegCache & NS9750_SER_STAT_A_RXFDB_MA)>>20; - if ( !cCharsAvailable ) - cCharsAvailable = 4; - - unCharCache = *get_ser_reg_addr_channel( NS9750_SER_FIFO, - CONSOLE ); - return 1; - } - - /* no chars available */ - return 0; -} - -static void ns9750_serial_setbrg(void) -{ - *get_ser_reg_addr_channel( NS9750_SER_BITRATE, CONSOLE ) = - calcBitrateRegister(); - *get_ser_reg_addr_channel( NS9750_SER_RX_CHAR_TIMER, CONSOLE ) = - calcRxCharGapRegister(); -} - -/*********************************************************************** - * @Function: calcBitrateRegister - * @Return: value for the serial bitrate register - * @Descr: register value depends on clock frequency and baudrate - ***********************************************************************/ - -static unsigned int calcBitrateRegister( void ) -{ - return ( NS9750_SER_BITRATE_EBIT | - NS9750_SER_BITRATE_CLKMUX_BCLK | - NS9750_SER_BITRATE_TMODE | - NS9750_SER_BITRATE_TCDR_16 | - NS9750_SER_BITRATE_RCDR_16 | - ( ( ( ( CONFIG_SYS_CLK_FREQ / 8 ) / /* BBUS clock,[1] Fig. 38 */ - ( gd->baudrate * 16 ) ) - 1 ) & - NS9750_SER_BITRATE_N_MA ) ); -} - -/*********************************************************************** - * @Function: calcRxCharGapRegister - * @Return: value for the character gap timer register - * @Descr: register value depends on clock frequency and baudrate. Currently 0 - * is used as there is a bug with the gap timer in PLL bypass mode. - ***********************************************************************/ - -static unsigned int calcRxCharGapRegister( void ) -{ - return NS9750_SER_RX_CHAR_TIMER_TRUN; -} - -static struct serial_device ns9750_serial_drv = { - .name = "ns9750_serial", - .start = ns9750_serial_init, - .stop = NULL, - .setbrg = ns9750_serial_setbrg, - .putc = ns9750_serial_putc, - .puts = default_serial_puts, - .getc = ns9750_serial_getc, - .tstc = ns9750_serial_tstc, -}; - -void ns9750_serial_initialize(void) -{ - serial_register(&ns9750_serial_drv); -} - -__weak struct serial_device *default_serial_console(void) -{ - return &ns9750_serial_drv; -} diff --git a/drivers/serial/serial.c b/drivers/serial/serial.c index 1f8955a..7922bf0 100644 --- a/drivers/serial/serial.c +++ b/drivers/serial/serial.c @@ -164,7 +164,6 @@ serial_initfunc(altera_serial_initialize); serial_initfunc(atmel_serial_initialize); serial_initfunc(lpc32xx_serial_initialize); serial_initfunc(mcf_serial_initialize); -serial_initfunc(ns9750_serial_initialize); serial_initfunc(oc_serial_initialize); serial_initfunc(s3c64xx_serial_initialize); serial_initfunc(sandbox_serial_initialize); @@ -259,7 +258,6 @@ void serial_initialize(void) atmel_serial_initialize(); lpc32xx_serial_initialize(); mcf_serial_initialize(); - ns9750_serial_initialize(); oc_serial_initialize(); s3c64xx_serial_initialize(); sandbox_serial_initialize(); |