/*
* 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.
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.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_hsuart_set_baudrate(void)
+static void lpc32xx_serial_setbrg(void)
{
u32 div;
writel(div, &hsuart->rate);
}
-static int lpc32xx_hsuart_getc(void)
+static int lpc32xx_serial_getc(void)
{
while (!(readl(&hsuart->level) & HSUART_LEVEL_RX))
/* NOP */;
return readl(&hsuart->rx) & HSUART_RX_DATA;
}
-static void lpc32xx_hsuart_putc(const char c)
+static void lpc32xx_serial_putc(const char c)
{
+ if (c == '\n')
+ serial_putc('\r');
+
writel(c, &hsuart->tx);
/* Wait for character to be sent */
/* NOP */;
}
-static int lpc32xx_hsuart_tstc(void)
+static int lpc32xx_serial_tstc(void)
{
if (readl(&hsuart->level) & HSUART_LEVEL_RX)
return 1;
return 0;
}
-static void lpc32xx_hsuart_init(void)
+static int lpc32xx_serial_init(void)
{
- lpc32xx_hsuart_set_baudrate();
+ 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;
}
-void serial_setbrg(void)
-{
- return lpc32xx_hsuart_set_baudrate();
-}
-
-void serial_putc(const char c)
-{
- lpc32xx_hsuart_putc(c);
-
- /* If \n, also do \r */
- if (c == '\n')
- lpc32xx_hsuart_putc('\r');
-}
-
-int serial_getc(void)
-{
- return lpc32xx_hsuart_getc();
-}
-
-void serial_puts(const char *s)
-{
- while (*s)
- serial_putc(*s++);
-}
-
-int serial_tstc(void)
+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 = default_serial_puts,
+ .getc = lpc32xx_serial_getc,
+ .tstc = lpc32xx_serial_tstc,
+};
+
+void lpc32xx_serial_initialize(void)
{
- return lpc32xx_hsuart_tstc();
+ serial_register(&lpc32xx_serial_drv);
}
-int serial_init(void)
+__weak struct serial_device *default_serial_console(void)
{
- lpc32xx_hsuart_init();
-
- return 0;
+ return &lpc32xx_serial_drv;
}