mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-01 00:49:43 +00:00
a382725060
Remove the support for not-CONFIG_SERIAL_MULTI part from serial port drivers and some board files. Since CONFIG_SERIAL_MULTI is now enabled by default, that part is a dead code. Remove it. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Marek Vasut <marek.vasut@gmail.com> Cc: Anatolij Gustschin <agust@denx.de> Cc: Stefan Roese <sr@denx.de> Signed-off-by: Tom Rini <trini@ti.com>
105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
/*
|
|
* Copyright (C) 2011 Vladimir Zapolskiy <vz@mleia.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.
|
|
*
|
|
* 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., 51 Franklin Street, Fifth Floor, Boston,
|
|
* MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/arch/cpu.h>
|
|
#include <asm/arch/clk.h>
|
|
#include <asm/arch/uart.h>
|
|
#include <asm/io.h>
|
|
#include <serial.h>
|
|
#include <linux/compiler.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static struct hsuart_regs *hsuart = (struct hsuart_regs *)HS_UART_BASE;
|
|
|
|
static void lpc32xx_serial_setbrg(void)
|
|
{
|
|
u32 div;
|
|
|
|
/* UART rate = PERIPH_CLK / ((HSU_RATE + 1) x 14) */
|
|
div = (get_serial_clock() / 14 + gd->baudrate / 2) / gd->baudrate - 1;
|
|
if (div > 255)
|
|
div = 255;
|
|
|
|
writel(div, &hsuart->rate);
|
|
}
|
|
|
|
static int lpc32xx_serial_getc(void)
|
|
{
|
|
while (!(readl(&hsuart->level) & HSUART_LEVEL_RX))
|
|
/* NOP */;
|
|
|
|
return readl(&hsuart->rx) & HSUART_RX_DATA;
|
|
}
|
|
|
|
static void lpc32xx_serial_putc(const char c)
|
|
{
|
|
writel(c, &hsuart->tx);
|
|
|
|
/* Wait for character to be sent */
|
|
while (readl(&hsuart->level) & HSUART_LEVEL_TX)
|
|
/* NOP */;
|
|
}
|
|
|
|
static int lpc32xx_serial_tstc(void)
|
|
{
|
|
if (readl(&hsuart->level) & HSUART_LEVEL_RX)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lpc32xx_serial_init(void)
|
|
{
|
|
lpc32xx_serial_setbrg();
|
|
|
|
/* Disable hardware RTS and CTS flow control, set up RX and TX FIFO */
|
|
writel(HSUART_CTRL_TMO_16 | HSUART_CTRL_HSU_OFFSET(20) |
|
|
HSUART_CTRL_HSU_RX_TRIG_32 | HSUART_CTRL_HSU_TX_TRIG_0,
|
|
&hsuart->ctrl);
|
|
return 0;
|
|
}
|
|
|
|
static void lpc32xx_serial_puts(const char *s)
|
|
{
|
|
while (*s)
|
|
serial_putc(*s++);
|
|
}
|
|
|
|
static struct serial_device lpc32xx_serial_drv = {
|
|
.name = "lpc32xx_serial",
|
|
.start = lpc32xx_serial_init,
|
|
.stop = NULL,
|
|
.setbrg = lpc32xx_serial_setbrg,
|
|
.putc = lpc32xx_serial_putc,
|
|
.puts = lpc32xx_serial_puts,
|
|
.getc = lpc32xx_serial_getc,
|
|
.tstc = lpc32xx_serial_tstc,
|
|
};
|
|
|
|
void lpc32xx_serial_initialize(void)
|
|
{
|
|
serial_register(&lpc32xx_serial_drv);
|
|
}
|
|
|
|
__weak struct serial_device *default_serial_console(void)
|
|
{
|
|
return &lpc32xx_serial_drv;
|
|
}
|