lkml.org 
[lkml]   [2013]   [Apr]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3/6] driver: serial: omap: add prepare/complete callback for "no_console_suspend" case
Date
The patch adapt the serial core/driver to take care of the case when "no_console_suspend"
is used in the bootargs. The patch will remove dependency to set od->flags to
"OMAP_DEVICE_NO_IDLE_ON_SUSPEND" in serial.c(non dt case) and omap_device.c(dt case).

Prepare and complete callbacks will ensure that clocks remain active for the console
uart when "no_console_suspend" is used in the bootargs.

Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
---
drivers/tty/serial/omap-serial.c | 20 ++++++++++++++++++++
1 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 08332f3..9ef80cf 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -1278,6 +1278,24 @@ static struct uart_driver serial_omap_reg = {
};

#ifdef CONFIG_PM_SLEEP
+static int serial_omap_prepare(struct device *dev)
+{
+ struct uart_omap_port *up = dev_get_drvdata(dev);
+
+ if (!console_suspend_enabled && uart_console(&up->port))
+ pm_runtime_disable(dev);
+
+ return 0;
+}
+
+static void serial_omap_complete(struct device *dev)
+{
+ struct uart_omap_port *up = dev_get_drvdata(dev);
+
+ if (!console_suspend_enabled && uart_console(&up->port))
+ pm_runtime_enable(dev);
+}
+
static int serial_omap_suspend(struct device *dev)
{
struct uart_omap_port *up = dev_get_drvdata(dev);
@@ -1632,6 +1650,8 @@ static const struct dev_pm_ops serial_omap_dev_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(serial_omap_suspend, serial_omap_resume)
SET_RUNTIME_PM_OPS(serial_omap_runtime_suspend,
serial_omap_runtime_resume, NULL)
+ .prepare = serial_omap_prepare,
+ .complete = serial_omap_complete,
};

#if defined(CONFIG_OF)
--
1.7.1


\
 
 \ /
  Last update: 2013-04-17 14:21    [W:0.393 / U:0.104 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site