Release 4.14 arch/mips/bcm63xx/early_printk.c

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
 */

#include <bcm63xx_io.h>
#include <linux/serial_bcm63xx.h>



static void wait_xfered(void)
{
	unsigned int val;

	/* wait for any previous char to be transmitted */
	do {
		val = bcm_uart0_readl(UART_IR_REG);
		if (val & UART_IR_STAT(UART_IR_TXEMPTY))
			break;
	} while (1);
}

Contributors
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Maxime Bizon
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void prom_putchar(char c)
{
	wait_xfered();
	bcm_uart0_writel(c, UART_FIFO_REG);
	wait_xfered();
}
Contributors
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Maxime Bizon
21
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1
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21
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Overall Contributors
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Maxime Bizon
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Florian Fainelli
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Directory: arch/mips/bcm63xx

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