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authorEduardo Valentin <edubezval@gmail.com>2015-08-11 20:21:21 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-08-15 03:23:25 +0300
commit189550b8644ef5d00d3b744f7fd423cce2d7c9ec (patch)
tree3bc513308eacc5b551620bdc6cb4ec069542dc9a /drivers/tty
parent9e7b399d6528eac33a6fbfceb2b92af209c3454d (diff)
downloadlinux-189550b8644ef5d00d3b744f7fd423cce2d7c9ec.tar.xz
serial: imx: introduce serial_imx_enable_wakeup()
This change is a code reorganization. Here we introduce serial_imx_enable_wakeup() helper function to do the job of configuring and preparing wakeup sources on imx serial device. The idea is to allow other parts of the code to call this function whenever the device is known to go to idle. Cc: Fabio Estevam <festevam@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jslaby@suse.com> Cc: linux-serial@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/imx.c22
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index b27c23256a51..3c2b0aca7d0e 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -1972,6 +1972,18 @@ static int serial_imx_remove(struct platform_device *pdev)
return uart_remove_one_port(&imx_reg, &sport->port);
}
+static void serial_imx_enable_wakeup(struct imx_port *sport, bool on)
+{
+ unsigned int val;
+
+ val = readl(sport->port.membase + UCR3);
+ if (on)
+ val |= UCR3_AWAKEN;
+ else
+ val &= ~UCR3_AWAKEN;
+ writel(val, sport->port.membase + UCR3);
+}
+
static int imx_serial_port_suspend_noirq(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
@@ -2029,12 +2041,9 @@ static int imx_serial_port_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct imx_port *sport = platform_get_drvdata(pdev);
- unsigned int val;
/* enable wakeup from i.MX UART */
- val = readl(sport->port.membase + UCR3);
- val |= UCR3_AWAKEN;
- writel(val, sport->port.membase + UCR3);
+ serial_imx_enable_wakeup(sport, true);
uart_suspend_port(&imx_reg, &sport->port);
@@ -2045,12 +2054,9 @@ static int imx_serial_port_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct imx_port *sport = platform_get_drvdata(pdev);
- unsigned int val;
/* disable wakeup from i.MX UART */
- val = readl(sport->port.membase + UCR3);
- val &= ~UCR3_AWAKEN;
- writel(val, sport->port.membase + UCR3);
+ serial_imx_enable_wakeup(sport, false);
uart_resume_port(&imx_reg, &sport->port);