1 files changed, 39 insertions, 20 deletions

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 891e1dd65f24..24110f6f61e0 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -241,7 +241,7 @@ static const struct serial8250_config uart_config[] = {
                 .fifo_size      = 128,
                 .tx_loadsz      = 128,
                 .fcr            = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
-                .flags          = UART_CAP_FIFO,
+                .flags          = UART_CAP_FIFO | UART_CAP_EFR | UART_CAP_SLEEP,
         },
         [PORT_16654] = {
                 .name           = "ST16654",
@@ -300,9 +300,16 @@ static const struct serial8250_config uart_config[] = {
                 .fcr            = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_00,
                 .flags          = UART_CAP_FIFO | UART_CAP_AFE,
         },
+        [PORT_U6_16550A] = {
+                .name           = "U6_16550A",
+                .fifo_size      = 64,
+                .tx_loadsz      = 64,
+                .fcr            = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
+                .flags          = UART_CAP_FIFO | UART_CAP_AFE,
+        },
 };
 
-#if defined (CONFIG_SERIAL_8250_AU1X00)
+#if defined(CONFIG_MIPS_ALCHEMY)
 
 /* Au1x00 UART hardware has a weird register layout */
 static const u8 au_io_in_map[] = {
@@ -422,7 +429,6 @@ static unsigned int mem32_serial_in(struct uart_port *p, int offset)
         return readl(p->membase + offset);
 }
 
-#ifdef CONFIG_SERIAL_8250_AU1X00
 static unsigned int au_serial_in(struct uart_port *p, int offset)
 {
         offset = map_8250_in_reg(p, offset) << p->regshift;
@@ -434,7 +440,6 @@ static void au_serial_out(struct uart_port *p, int offset, int value)
         offset = map_8250_out_reg(p, offset) << p->regshift;
         __raw_writel(value, p->membase + offset);
 }
-#endif
 
 static unsigned int tsi_serial_in(struct uart_port *p, int offset)
 {
@@ -503,12 +508,11 @@ static void set_io_from_upio(struct uart_port *p)
                 p->serial_out = mem32_serial_out;
                 break;
 
-#ifdef CONFIG_SERIAL_8250_AU1X00
         case UPIO_AU:
                 p->serial_in = au_serial_in;
                 p->serial_out = au_serial_out;
                 break;
-#endif
+
         case UPIO_TSI:
                 p->serial_in = tsi_serial_in;
                 p->serial_out = tsi_serial_out;
@@ -535,9 +539,7 @@ serial_out_sync(struct uart_8250_port *up, int offset, int value)
         switch (p->iotype) {
         case UPIO_MEM:
         case UPIO_MEM32:
-#ifdef CONFIG_SERIAL_8250_AU1X00
         case UPIO_AU:
-#endif
         case UPIO_DWAPB:
                 p->serial_out(p, offset, value);
                 p->serial_in(p, UART_LCR);      /* safe, no side-effects */
@@ -573,7 +575,7 @@ static inline void _serial_dl_write(struct uart_8250_port *up, int value)
         serial_outp(up, UART_DLM, value >> 8 & 0xff);
 }
 
-#if defined(CONFIG_SERIAL_8250_AU1X00)
+#if defined(CONFIG_MIPS_ALCHEMY)
 /* Au1x00 haven't got a standard divisor latch */
 static int serial_dl_read(struct uart_8250_port *up)
 {
@@ -1075,6 +1077,15 @@ static void autoconfig_16550a(struct uart_8250_port *up)
                 DEBUG_AUTOCONF("Couldn't force IER_UUE to 0 ");
         }
         serial_outp(up, UART_IER, iersave);
+
+        /*
+         * We distinguish between 16550A and U6 16550A by counting
+         * how many bytes are in the FIFO.
+         */
+        if (up->port.type == PORT_16550A && size_fifo(up) == 64) {
+                up->port.type = PORT_U6_16550A;
+                up->capabilities |= UART_CAP_AFE;
+        }
 }
 
 /*
@@ -2229,9 +2240,9 @@ static unsigned int serial8250_get_divisor(struct uart_port *port, unsigned int
         return quot;
 }
 
-static void
-serial8250_set_termios(struct uart_port *port, struct ktermios *termios,
-                       struct ktermios *old)
+void
+serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
+                          struct ktermios *old)
 {
         struct uart_8250_port *up = (struct uart_8250_port *)port;
         unsigned char cval, fcr = 0;
@@ -2407,16 +2418,22 @@ serial8250_set_termios(struct uart_port *port, struct ktermios *termios,
         if (tty_termios_baud_rate(termios))
                 tty_termios_encode_baud_rate(termios, baud, baud);
 }
+EXPORT_SYMBOL(serial8250_do_set_termios);
 
 static void
-serial8250_set_ldisc(struct uart_port *port)
+serial8250_set_termios(struct uart_port *port, struct ktermios *termios,
+                       struct ktermios *old)
 {
-        int line = port->line;
-
-        if (line >= port->state->port.tty->driver->num)
-                return;
+        if (port->set_termios)
+                port->set_termios(port, termios, old);
+        else
+                serial8250_do_set_termios(port, termios, old);
+}
 
-        if (port->state->port.tty->ldisc->ops->num == N_PPS) {
+static void
+serial8250_set_ldisc(struct uart_port *port, int new)
+{
+        if (new == N_PPS) {
                 port->flags |= UPF_HARDPPS_CD;
                 serial8250_enable_ms(port);
         } else
@@ -2596,11 +2613,9 @@ static void serial8250_config_port(struct uart_port *port, int flags)
         if (flags & UART_CONFIG_TYPE)
                 autoconfig(up, probeflags);
 
-#ifdef CONFIG_SERIAL_8250_AU1X00
         /* if access method is AU, it is a 16550 with a quirk */
         if (up->port.type == PORT_16550A && up->port.iotype == UPIO_AU)
                 up->bugs |= UART_BUG_NOMSR;
-#endif
 
         if (up->port.type != PORT_UNKNOWN && flags & UART_CONFIG_IRQ)
                 autoconfig_irq(up);
@@ -2994,6 +3009,7 @@ static int __devinit serial8250_probe(struct platform_device *dev)
                 port.type               = p->type;
                 port.serial_in          = p->serial_in;
                 port.serial_out         = p->serial_out;
+                port.set_termios        = p->set_termios;
                 port.dev                = &dev->dev;
                 port.irqflags           |= irqflag;
                 ret = serial8250_register_port(&port);
@@ -3157,6 +3173,9 @@ int serial8250_register_port(struct uart_port *port)
                         uart->port.serial_in = port->serial_in;
                 if (port->serial_out)
                         uart->port.serial_out = port->serial_out;
+                /*  Possibly override set_termios call */
+                if (port->set_termios)
+                        uart->port.set_termios = port->set_termios;
 
                 ret = uart_add_one_port(&serial8250_reg, &uart->port);
                 if (ret == 0)