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Commit 5e50d2d6 authored by Magnus Damm's avatar Magnus Damm Committed by Paul Mundt
Browse files

serial: sh-sci: Runtime PM support 



Add support for Runtime PM in the sh-sci driver.

Signed-off-by: default avatarMagnus Damm <damm@opensource.se>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 972b1943

drivers/tty/serial/sh-sci.c

+14 −0
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ 
#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 +563,9 @@ 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 +575,9 @@ 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 +846,8 @@ 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 +859,8 @@ 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 +1769,8 @@ 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;
@@ -1938,6 +1951,7 @@ static int sci_remove(struct platform_device *dev) 
	clk_put(port->iclk);

	clk_put(port->fclk);



	pm_runtime_disable(&dev->dev);

	return 0;

}