/*
* (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>
*
- * 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
- *
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <watchdog.h>
-#ifdef CONFIG_MX31
-#include <asm/arch/mx31.h>
-#else
#include <asm/arch/imx-regs.h>
#include <asm/arch/clock.h>
-#endif
+#include <serial.h>
+#include <linux/compiler.h>
#define __REG(x) (*((volatile u32 *)(x)))
-#if defined(CONFIG_SYS_MX31_UART1) || defined(CONFIG_SYS_MX25_UART1)
-#define UART_PHYS 0x43f90000
-#elif defined(CONFIG_SYS_MX31_UART2) || defined(CONFIG_SYS_MX25_UART2)
-#define UART_PHYS 0x43f94000
-#elif defined(CONFIG_SYS_MX31_UART3) || defined(CONFIG_SYS_MX25_UART3)
-#define UART_PHYS 0x5000c000
-#elif defined(CONFIG_SYS_MX31_UART4) || defined(CONFIG_SYS_MX25_UART4)
-#define UART_PHYS 0x43fb0000
-#elif defined(CONFIG_SYS_MX31_UART5) || defined(CONFIG_SYS_MX25_UART5)
-#define UART_PHYS 0x43fb4000
-#elif defined(CONFIG_SYS_MX27_UART1)
-#define UART_PHYS 0x1000a000
-#elif defined(CONFIG_SYS_MX27_UART2)
-#define UART_PHYS 0x1000b000
-#elif defined(CONFIG_SYS_MX27_UART3)
-#define UART_PHYS 0x1000c000
-#elif defined(CONFIG_SYS_MX27_UART4)
-#define UART_PHYS 0x1000d000
-#elif defined(CONFIG_SYS_MX27_UART5)
-#define UART_PHYS 0x1001b000
-#elif defined(CONFIG_SYS_MX27_UART6)
-#define UART_PHYS 0x1001c000
-#elif defined(CONFIG_SYS_MX51_UART1)
-#define UART_PHYS UART1_BASE_ADDR
-#elif defined(CONFIG_SYS_MX51_UART2)
-#define UART_PHYS UART2_BASE_ADDR
-#elif defined(CONFIG_SYS_MX51_UART3)
-#define UART_PHYS UART3_BASE_ADDR
-#else
-#error "define CONFIG_SYS_MXxx_UARTx to use the MXC UART driver"
+#ifndef CONFIG_MXC_UART_BASE
+#error "define CONFIG_MXC_UART_BASE to use the MXC UART driver"
#endif
-#ifdef CONFIG_SERIAL_MULTI
-#warning "MXC driver does not support MULTI serials."
-#endif
+#define UART_PHYS CONFIG_MXC_UART_BASE
/* Register definitions */
#define URXD 0x0 /* Receiver Register */
#define UCR3_DSR (1<<10) /* Data set ready */
#define UCR3_DCD (1<<9) /* Data carrier detect */
#define UCR3_RI (1<<8) /* Ring indicator */
-#define UCR3_TIMEOUTEN (1<<7) /* Timeout interrupt enable */
+#define UCR3_ADNIMP (1<<7) /* Autobaud Detection Not Improved */
#define UCR3_RXDSEN (1<<6) /* Receive status interrupt enable */
#define UCR3_AIRINTEN (1<<5) /* Async IR wake interrupt enable */
#define UCR3_AWAKEN (1<<4) /* Async wake interrupt enable */
DECLARE_GLOBAL_DATA_PTR;
-void serial_setbrg (void)
+static void mxc_serial_setbrg(void)
{
u32 clk = imx_get_uartclk();
}
-int serial_getc (void)
+static int mxc_serial_getc(void)
{
while (__REG(UART_PHYS + UTS) & UTS_RXEMPTY)
WATCHDOG_RESET();
return (__REG(UART_PHYS + URXD) & URXD_RX_DATA); /* mask out status from upper word */
}
-void serial_putc (const char c)
+static void mxc_serial_putc(const char c)
{
__REG(UART_PHYS + UTXD) = c;
/*
* Test whether a character is in the RX buffer
*/
-int serial_tstc (void)
+static int mxc_serial_tstc(void)
{
/* If receive fifo is empty, return false */
if (__REG(UART_PHYS + UTS) & UTS_RXEMPTY)
return 1;
}
-void
-serial_puts (const char *s)
-{
- while (*s) {
- serial_putc (*s++);
- }
-}
-
/*
* Initialise the serial port with the given baudrate. The settings
* are always 8 data bits, no parity, 1 stop bit, no start bits.
*
*/
-int serial_init (void)
+static int mxc_serial_init(void)
{
__REG(UART_PHYS + UCR1) = 0x0;
__REG(UART_PHYS + UCR2) = 0x0;
while (!(__REG(UART_PHYS + UCR2) & UCR2_SRST));
- __REG(UART_PHYS + UCR3) = 0x0704;
+ __REG(UART_PHYS + UCR3) = 0x0704 | UCR3_ADNIMP;
__REG(UART_PHYS + UCR4) = 0x8000;
__REG(UART_PHYS + UESC) = 0x002b;
__REG(UART_PHYS + UTIM) = 0x0;
return 0;
}
+
+static struct serial_device mxc_serial_drv = {
+ .name = "mxc_serial",
+ .start = mxc_serial_init,
+ .stop = NULL,
+ .setbrg = mxc_serial_setbrg,
+ .putc = mxc_serial_putc,
+ .puts = default_serial_puts,
+ .getc = mxc_serial_getc,
+ .tstc = mxc_serial_tstc,
+};
+
+void mxc_serial_initialize(void)
+{
+ serial_register(&mxc_serial_drv);
+}
+
+__weak struct serial_device *default_serial_console(void)
+{
+ return &mxc_serial_drv;
+}