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Blackfin Serial Driver: abstract away DLAB differences into header

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Signed-off-by: Mike Frysinger <[email protected]>
Signed-off-by: Bryan Wu <[email protected]>
This commit is contained in:
Mike Frysinger 2008-05-07 11:41:26 +08:00 • committed by Bryan Wu
commit 45828b812d
6 changed files with 22 additions and 33 deletions
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40
drivers/serial/bfin_5xx.c
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@ -136,10 +136,7 @@ void kgdb_put_debug_char(int chr)
SSYNC();
}
#ifndef CONFIG_BF54x
UART_PUT_LCR(uart, UART_GET_LCR(uart)&(~DLAB));
SSYNC();
#endif
UART_CLEAR_DLAB(uart);
UART_PUT_CHAR(uart, (unsigned char)chr);
SSYNC();
}
@ -158,10 +155,7 @@ int kgdb_get_debug_char(void)
while(!(UART_GET_LSR(uart) & DR)) {
SSYNC();
}
#ifndef CONFIG_BF54x
UART_PUT_LCR(uart, UART_GET_LCR(uart)&(~DLAB));
SSYNC();
#endif
UART_CLEAR_DLAB(uart);
chr = UART_GET_CHAR(uart);
SSYNC();
@ -764,26 +758,15 @@ bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
UART_PUT_IER(uart, 0);
#endif
#ifndef CONFIG_BF54x
/* Set DLAB in LCR to Access DLL and DLH */
val = UART_GET_LCR(uart);
val |= DLAB;
UART_PUT_LCR(uart, val);
SSYNC();
#endif
UART_SET_DLAB(uart);
UART_PUT_DLL(uart, quot & 0xFF);
SSYNC();
UART_PUT_DLH(uart, (quot >> 8) & 0xFF);
SSYNC();
#ifndef CONFIG_BF54x
/* Clear DLAB in LCR to Access THR RBR IER */
val = UART_GET_LCR(uart);
val &= ~DLAB;
UART_PUT_LCR(uart, val);
SSYNC();
#endif
UART_CLEAR_DLAB(uart);
UART_PUT_LCR(uart, lcr);
@ -946,8 +929,7 @@ bfin_serial_console_get_options(struct bfin_serial_port *uart, int *baud,
status = UART_GET_IER(uart) & (ERBFI | ETBEI);
if (status == (ERBFI | ETBEI)) {
/* ok, the port was enabled */
unsigned short lcr, val;
unsigned short dlh, dll;
u16 lcr, dlh, dll;
lcr = UART_GET_LCR(uart);
@ -964,22 +946,14 @@ bfin_serial_console_get_options(struct bfin_serial_port *uart, int *baud,
case 2: *bits = 7; break;
case 3: *bits = 8; break;
}
#ifndef CONFIG_BF54x
/* Set DLAB in LCR to Access DLL and DLH */
val = UART_GET_LCR(uart);
val |= DLAB;
UART_PUT_LCR(uart, val);
#endif
UART_SET_DLAB(uart);
dll = UART_GET_DLL(uart);
dlh = UART_GET_DLH(uart);
#ifndef CONFIG_BF54x
/* Clear DLAB in LCR to Access THR RBR IER */
val = UART_GET_LCR(uart);
val &= ~DLAB;
UART_PUT_LCR(uart, val);
#endif
UART_CLEAR_DLAB(uart);
*baud = get_sclk() / (16*(dll | dlh << 8));
}