MPC52xx uart power management.
Not sure how exactly this should be written, but this seems
to work, and works around a few seconds delay in resume.
Signed-off-by: Domen Puncer <[EMAIL PROTECTED]>
Index: grant.git/drivers/serial/mpc52xx_uart.c
===================================================================
--- grant.git.orig/drivers/serial/mpc52xx_uart.c
+++ grant.git/drivers/serial/mpc52xx_uart.c
@@ -418,6 +418,22 @@ mpc52xx_uart_verify_port(struct uart_por
return 0;
}
+/* just Reenable TX and RX */
+static void mpc52xx_uart_pm(struct uart_port *port, unsigned int state,
unsigned int oldstate)
+{
+ struct mpc52xx_psc __iomem *psc = PSC(port);
+ unsigned long flags;
+
+ /* Get the lock */
+ spin_lock_irqsave(&port->lock, flags);
+
+ /* Reenable TX & RX */
+ out_8(&psc->command,MPC52xx_PSC_TX_ENABLE);
+ out_8(&psc->command,MPC52xx_PSC_RX_ENABLE);
+
+ /* We're all set, release the lock */
+ spin_unlock_irqrestore(&port->lock, flags);
+}
static struct uart_ops mpc52xx_uart_ops = {
.tx_empty = mpc52xx_uart_tx_empty,
@@ -432,8 +448,10 @@ static struct uart_ops mpc52xx_uart_ops
.startup = mpc52xx_uart_startup,
.shutdown = mpc52xx_uart_shutdown,
.set_termios = mpc52xx_uart_set_termios,
-/* .pm = mpc52xx_uart_pm, Not supported yet */
-/* .set_wake = mpc52xx_uart_set_wake, Not supported yet */
+
+ .pm = mpc52xx_uart_pm,
+/* .set_wake = mpc52xx_uart_set_wake,*/
+
.type = mpc52xx_uart_type,
.release_port = mpc52xx_uart_release_port,
.request_port = mpc52xx_uart_request_port,
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