diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250_port.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index c3ba4c794fee..995a7e8b7839 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -2407,23 +2407,6 @@ static void serial8250_shutdown(struct uart_port *port) serial8250_do_shutdown(port); } -/* - * XR17V35x UARTs have an extra fractional divisor register (DLD) - * Calculate divisor with extra 4-bit fractional portion - */ -static unsigned int xr17v35x_get_divisor(struct uart_8250_port *up, - unsigned int baud, - unsigned int *frac) -{ - struct uart_port *port = &up->port; - unsigned int quot_16; - - quot_16 = DIV_ROUND_CLOSEST(port->uartclk, baud); - *frac = quot_16 & 0x0f; - - return quot_16 >> 4; -} - /* Nuvoton NPCM UARTs have a custom divisor calculation */ static unsigned int npcm_get_divisor(struct uart_8250_port *up, unsigned int baud) @@ -2451,8 +2434,6 @@ static unsigned int serial8250_do_get_divisor(struct uart_port *port, else if ((port->flags & UPF_MAGIC_MULTIPLIER) && baud == (port->uartclk/8)) quot = 0x8002; - else if (up->port.type == PORT_XR17V35X) - quot = xr17v35x_get_divisor(up, baud, frac); else if (up->port.type == PORT_NPCM) quot = npcm_get_divisor(up, baud); else @@ -2539,13 +2520,6 @@ void serial8250_do_set_divisor(struct uart_port *port, unsigned int baud, serial_port_out(port, UART_LCR, up->lcr | UART_LCR_DLAB); serial_dl_write(up, quot); - - /* XR17V35x UARTs have an extra fractional divisor register (DLD) */ - if (up->port.type == PORT_XR17V35X) { - /* Preserve bits not related to baudrate; DLD[7:4]. */ - quot_frac |= serial_port_in(port, 0x2) & 0xf0; - serial_port_out(port, 0x2, quot_frac); - } } EXPORT_SYMBOL_GPL(serial8250_do_set_divisor); |