serial: atmel_serial: add poll_get_char and poll_put_char uart_ops

[safe/jmp/linux-2.6] / drivers / serial / zs.c

diff --git a/drivers/serial/zs.c b/drivers/serial/zs.c
index bd45b62..1a7fd3e 100644 (file)
--- a/drivers/serial/zs.c
+++ b/drivers/serial/zs.c
@@ -231,7 +231,7 @@ static int zs_receive_drain(struct zs_port *zport)
 {
        int loops = 10000;
 
-       while ((read_zsreg(zport, R0) & Rx_CH_AV) && loops--)
+       while ((read_zsreg(zport, R0) & Rx_CH_AV) && --loops)
                read_zsdata(zport);
        return loops;
 }
@@ -241,7 +241,7 @@ static int zs_transmit_drain(struct zs_port *zport, int irq)
        struct zs_scc *scc = zport->scc;
        int loops = 10000;
 
-       while (!(read_zsreg(zport, R0) & Tx_BUF_EMP) && loops--) {
+       while (!(read_zsreg(zport, R0) & Tx_BUF_EMP) && --loops) {
                zs_spin_unlock_cond_irq(&scc->zlock, irq);
                udelay(2);
                zs_spin_lock_cond_irq(&scc->zlock, irq);
@@ -254,7 +254,7 @@ static int zs_line_drain(struct zs_port *zport, int irq)
        struct zs_scc *scc = zport->scc;
        int loops = 10000;
 
-       while (!(read_zsreg(zport, R1) & ALL_SNT) && loops--) {
+       while (!(read_zsreg(zport, R1) & ALL_SNT) && --loops) {
                zs_spin_unlock_cond_irq(&scc->zlock, irq);
                udelay(2);
                zs_spin_lock_cond_irq(&scc->zlock, irq);
@@ -602,12 +602,12 @@ static void zs_receive_chars(struct zs_port *zport)
                uart_insert_char(uport, status, Rx_OVR, ch, flag);
        }
 
-       tty_flip_buffer_push(uport->info->port.tty);
+       tty_flip_buffer_push(uport->state->port.tty);
 }
 
 static void zs_raw_transmit_chars(struct zs_port *zport)
 {
-       struct circ_buf *xmit = &zport->port.info->xmit;
+       struct circ_buf *xmit = &zport->port.state->xmit;
 
        /* XON/XOFF chars.  */
        if (zport->port.x_char) {
@@ -686,7 +686,7 @@ static void zs_status_handle(struct zs_port *zport, struct zs_port *zport_a)
                        uport->icount.rng++;
 
                if (delta)
-                       wake_up_interruptible(&uport->info->delta_msr_wait);
+                       wake_up_interruptible(&uport->state->port.delta_msr_wait);
 
                spin_lock(&scc->zlock);
        }
@@ -787,7 +787,6 @@ static int zs_startup(struct uart_port *uport)
        zport->regs[1] &= ~RxINT_MASK;
        zport->regs[1] |= RxINT_ALL | TxINT_ENAB | EXT_INT_ENAB;
        zport->regs[3] |= RxENABLE;
-       zport->regs[5] |= TxENAB;
        zport->regs[15] |= BRKIE;
        write_zsreg(zport, R1, zport->regs[1]);
        write_zsreg(zport, R3, zport->regs[3]);
@@ -814,7 +813,6 @@ static void zs_shutdown(struct uart_port *uport)
 
        spin_lock_irqsave(&scc->zlock, flags);
 
-       zport->regs[5] &= ~TxENAB;
        zport->regs[3] &= ~RxENABLE;
        write_zsreg(zport, R5, zport->regs[5]);
        write_zsreg(zport, R3, zport->regs[3]);
@@ -959,6 +957,23 @@ static void zs_set_termios(struct uart_port *uport, struct ktermios *termios,
        spin_unlock_irqrestore(&scc->zlock, flags);
 }
 
+/*
+ * Hack alert!
+ * Required solely so that the initial PROM-based console
+ * works undisturbed in parallel with this one.
+ */
+static void zs_pm(struct uart_port *uport, unsigned int state,
+                 unsigned int oldstate)
+{
+       struct zs_port *zport = to_zport(uport);
+
+       if (state < 3)
+               zport->regs[5] |= TxENAB;
+       else
+               zport->regs[5] &= ~TxENAB;
+       write_zsreg(zport, R5, zport->regs[5]);
+}
+
 
 static const char *zs_type(struct uart_port *uport)
 {
@@ -1041,6 +1056,7 @@ static struct uart_ops zs_ops = {
        .startup        = zs_startup,
        .shutdown       = zs_shutdown,
        .set_termios    = zs_set_termios,
+       .pm             = zs_pm,
        .type           = zs_type,
        .release_port   = zs_release_port,
        .request_port   = zs_request_port,
@@ -1190,6 +1206,7 @@ static int __init zs_console_setup(struct console *co, char *options)
                return ret;
 
        zs_reset(zport);
+       zs_pm(uport, 0, -1);
 
        if (options)
                uart_parse_options(options, &baud, &parity, &bits, &flow);