diff options
Diffstat (limited to 'drivers/serial/serial_blackfin.c')
| -rw-r--r-- | drivers/serial/serial_blackfin.c | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/drivers/serial/serial_blackfin.c b/drivers/serial/serial_blackfin.c deleted file mode 100644 index 2122226734..0000000000 --- a/drivers/serial/serial_blackfin.c +++ /dev/null @@ -1,132 +0,0 @@ -/* - * (C) Copyright 2005 - * Sascha Hauer, Pengutronix <s.hauer@pengutronix.de> - * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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. - * - */ - -#include <common.h> -#include <driver.h> -#include <init.h> -#include <malloc.h> -#include <io.h> -#include <asm/blackfin.h> - -#define UART_IER_ERBFI 0x01 -#define UART_IER_ETBEI 0x02 -#define UART_IER_ELSI 0x04 -#define UART_IER_EDDSI 0x08 - -#define UART_IIR_NOINT 0x01 -#define UART_IIR_STATUS 0x06 -#define UART_IIR_LSR 0x06 -#define UART_IIR_RBR 0x04 -#define UART_IIR_THR 0x02 -#define UART_IIR_MSR 0x00 - -#define UART_LCR_WLS5 0 -#define UART_LCR_WLS6 0x01 -#define UART_LCR_WLS7 0x02 -#define UART_LCR_WLS8 0x03 -#define UART_LCR_STB 0x04 -#define UART_LCR_PEN 0x08 -#define UART_LCR_EPS 0x10 -#define UART_LCR_SP 0x20 -#define UART_LCR_SB 0x40 -#define UART_LCR_DLAB 0x80 - -#define UART_LSR_DR 0x01 -#define UART_LSR_OE 0x02 -#define UART_LSR_PE 0x04 -#define UART_LSR_FE 0x08 -#define UART_LSR_BI 0x10 -#define UART_LSR_THRE 0x20 -#define UART_LSR_TEMT 0x40 - -#define UART_GCTL_UCEN 0x01 - -static int blackfin_serial_setbaudrate(struct console_device *cdev, int baudrate) -{ - int divisor, oldlcr; - - oldlcr = readw(UART_LCR); - - divisor = (get_sclk() + (baudrate * 0)) / (baudrate * 16); - - /* Set DLAB in LCR to Access DLL and DLH */ - writew(UART_LCR_DLAB, UART_LCR); - - writew(divisor & 0xff, UART_DLL); - writew((divisor >> 8) & 0xff, UART_DLH); - - /* Clear DLAB in LCR to Access THR RBR IER */ - writew(oldlcr, UART_LCR); - - return 0; -} - -static int blackfin_serial_init_port(struct console_device *cdev) -{ - /* Enable UART */ - writew(UART_GCTL_UCEN, UART_GCTL); - - /* Set LCR to Word Lengh 8-bit word select */ - writew(UART_LCR_WLS8, UART_LCR); - - return 0; -} - -static void blackfin_serial_putc(struct console_device *cdev, char c) -{ - while (!(readw(UART_LSR) & UART_LSR_TEMT)); - - writew(c, UART_THR); -} - -static int blackfin_serial_getc(struct console_device *cdev) -{ - while (!(readw(UART_LSR) & UART_LSR_DR)); - - return readw(UART_RBR); -} - -static int blackfin_serial_tstc(struct console_device *cdev) -{ - return (readw(UART_LSR) & UART_LSR_DR) ? 1 : 0; -} - -static int blackfin_serial_probe(struct device_d *dev) -{ - struct console_device *cdev; - - cdev = xzalloc(sizeof(struct console_device)); - cdev->dev = dev; - cdev->tstc = blackfin_serial_tstc; - cdev->putc = blackfin_serial_putc; - cdev->getc = blackfin_serial_getc; - cdev->setbrg = blackfin_serial_setbaudrate; - - blackfin_serial_init_port(cdev); - - console_register(cdev); - - return 0; -} - -static struct driver_d blackfin_serial_driver = { - .name = "blackfin_serial", - .probe = blackfin_serial_probe, -}; -console_platform_driver(blackfin_serial_driver); |