5d15ac7c20
Simplify the in kernel serial header to a minimum. The driver doing the real handling is the tty driver. Change-Id: I5d487d71a3d22906313aa8af5e9d84b0751a6868
23 lines
532 B
C
23 lines
532 B
C
#include <sys/types.h>
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#include <machine/cpu.h>
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#include <io.h>
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#include "omap_serial.h"
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void omap3_ser_putc(char c)
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{
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int i;
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/* Wait until FIFO's empty */
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for (i = 0; i < 100000; i++)
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if (mmio_read(OMAP3_DEBUG_UART_LSR) & OMAP3_LSR_THRE)
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break;
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/* Write character */
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mmio_write(OMAP3_DEBUG_UART_THR, c);
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/* And wait again until FIFO's empty to prevent TTY from overwriting */
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for (i = 0; i < 100000; i++)
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if (mmio_read(OMAP3_DEBUG_UART_LSR) & (OMAP3_LSR_THRE | OMAP3_LSR_TEMT))
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break;
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}
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