diff options
Diffstat (limited to 'drivers/tty/serial/sh-sci.c')
| -rw-r--r-- | drivers/tty/serial/sh-sci.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 920a6f929c8b..ebd8629c108d 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1,6 +1,4 @@ /* - * drivers/serial/sh-sci.c - * * SuperH on-chip serial module support. (SCI with no FIFO / with FIFO) * * Copyright (C) 2002 - 2011 Paul Mundt @@ -43,6 +41,7 @@ #include <linux/platform_device.h> #include <linux/serial_sci.h> #include <linux/notifier.h> +#include <linux/pm_runtime.h> #include <linux/cpufreq.h> #include <linux/clk.h> #include <linux/ctype.h> @@ -562,6 +561,9 @@ static void sci_break_timer(unsigned long data) { struct sci_port *port = (struct sci_port *)data; + if (port->enable) + port->enable(&port->port); + if (sci_rxd_in(&port->port) == 0) { port->break_flag = 1; sci_schedule_break_timer(port); @@ -571,6 +573,9 @@ static void sci_break_timer(unsigned long data) sci_schedule_break_timer(port); } else port->break_flag = 0; + + if (port->disable) + port->disable(&port->port); } static int sci_handle_errors(struct uart_port *port) @@ -839,6 +844,8 @@ static void sci_clk_enable(struct uart_port *port) { struct sci_port *sci_port = to_sci_port(port); + pm_runtime_get_sync(port->dev); + clk_enable(sci_port->iclk); sci_port->port.uartclk = clk_get_rate(sci_port->iclk); clk_enable(sci_port->fclk); @@ -850,6 +857,8 @@ static void sci_clk_disable(struct uart_port *port) clk_disable(sci_port->fclk); clk_disable(sci_port->iclk); + + pm_runtime_put_sync(port->dev); } static int sci_request_irq(struct sci_port *port) @@ -1758,6 +1767,8 @@ static int __devinit sci_init_single(struct platform_device *dev, sci_port->enable = sci_clk_enable; sci_port->disable = sci_clk_disable; port->dev = &dev->dev; + + pm_runtime_enable(&dev->dev); } sci_port->break_timer.data = (unsigned long)sci_port; @@ -1777,7 +1788,7 @@ static int __devinit sci_init_single(struct platform_device *dev, * * For the muxed case there's nothing more to do. */ - port->irq = p->irqs[SCIx_TXI_IRQ]; + port->irq = p->irqs[SCIx_RXI_IRQ]; if (p->dma_dev) dev_dbg(port->dev, "DMA device %p, tx %d, rx %d\n", @@ -1938,6 +1949,7 @@ static int sci_remove(struct platform_device *dev) clk_put(port->iclk); clk_put(port->fclk); + pm_runtime_disable(&dev->dev); return 0; } |