diff options
Diffstat (limited to 'drivers/serial/serial_altera.c')
-rw-r--r-- | drivers/serial/serial_altera.c | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/drivers/serial/serial_altera.c b/drivers/serial/serial_altera.c deleted file mode 100644 index 51dcf8c790..0000000000 --- a/drivers/serial/serial_altera.c +++ /dev/null @@ -1,104 +0,0 @@ -/* - * (C) Copyright 2011, Franck JULLIEN, <elec4fun@gmail.com> - * - * 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/nios2-io.h> - -struct altera_serial_priv { - struct console_device cdev; - void __iomem *regs; -}; - -static int altera_serial_setbaudrate(struct console_device *cdev, int baudrate) -{ - struct altera_serial_priv *priv = container_of(cdev, - struct altera_serial_priv, cdev); - - struct nios_uart *uart = priv->regs; - uint16_t div; - - div = (CPU_FREQ / baudrate) - 1; - writew(div, &uart->divisor); - - return 0; -} - -static void altera_serial_putc(struct console_device *cdev, char c) -{ - struct altera_serial_priv *priv = container_of(cdev, - struct altera_serial_priv, cdev); - - struct nios_uart *uart = priv->regs; - - while ((readw(&uart->status) & NIOS_UART_TRDY) == 0); - - writew(c, &uart->txdata); -} - -static int altera_serial_tstc(struct console_device *cdev) -{ - struct altera_serial_priv *priv = container_of(cdev, - struct altera_serial_priv, cdev); - - struct nios_uart *uart = priv->regs; - - return readw(&uart->status) & NIOS_UART_RRDY; -} - -static int altera_serial_getc(struct console_device *cdev) -{ - struct altera_serial_priv *priv = container_of(cdev, - struct altera_serial_priv, cdev); - - struct nios_uart *uart = priv->regs; - - while (altera_serial_tstc(cdev) == 0); - - return readw(&uart->rxdata) & 0x000000FF; -} - -static int altera_serial_probe(struct device_d *dev) -{ - struct resource *iores; - struct console_device *cdev; - struct altera_serial_priv *priv; - - priv = xzalloc(sizeof(*priv)); - cdev = &priv->cdev; - - iores = dev_request_mem_resource(dev, 0); - if (IS_ERR(iores)) - return PTR_ERR(iores); - priv->regs = IOMEM(iores->start); - cdev->dev = dev; - cdev->tstc = altera_serial_tstc; - cdev->putc = altera_serial_putc; - cdev->getc = altera_serial_getc; - cdev->setbrg = altera_serial_setbaudrate; - - console_register(cdev); - - return 0; -} - -static struct driver_d altera_serial_driver = { - .name = "altera_serial", - .probe = altera_serial_probe, -}; -console_platform_driver(altera_serial_driver); |