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Message-Id: <1431560196-5722-4-git-send-email-tony@atomide.com>
Date: Wed, 13 May 2015 16:36:34 -0700
From: Tony Lindgren <tony@...mide.com>
To: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
Alan Stern <stern@...land.harvard.edu>
Cc: Andreas Fenkart <afenkart@...il.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Felipe Balbi <balbi@...com>,
Huiquan Zhong <huiquan.zhong@...el.com>,
Kevin Hilman <khilman@...nel.org>, NeilBrown <neilb@...e.de>,
Mika Westerberg <mika.westerberg@...ux.intel.com>,
Nishanth Menon <nm@...com>,
Peter Hurley <peter@...leysoftware.com>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
Ulf Hansson <ulf.hansson@...aro.org>,
Thomas Gleixner <tglx@...utronix.de>, linux-pm@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
linux-omap@...r.kernel.org
Subject: [PATCH 3/5] serial: omap: Switch wake-up interrupt to generic wakeirq
We can now use generic wakeirq handling and remove the custom handling
for the wake-up interrupts.
Signed-off-by: Tony Lindgren <tony@...mide.com>
---
drivers/tty/serial/omap-serial.c | 38 +++++++-------------------------------
1 file changed, 7 insertions(+), 31 deletions(-)
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 211479a..b0cadaa 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -38,6 +38,7 @@
#include <linux/serial_core.h>
#include <linux/irq.h>
#include <linux/pm_runtime.h>
+#include <linux/pm_wakeirq.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/gpio.h>
@@ -160,7 +161,6 @@ struct uart_omap_port {
unsigned long port_activity;
int context_loss_cnt;
u32 errata;
- u8 wakeups_enabled;
u32 features;
int rts_gpio;
@@ -209,28 +209,11 @@ static int serial_omap_get_context_loss_count(struct uart_omap_port *up)
return pdata->get_context_loss_count(up->dev);
}
-static inline void serial_omap_enable_wakeirq(struct uart_omap_port *up,
- bool enable)
-{
- if (!up->wakeirq)
- return;
-
- if (enable)
- enable_irq(up->wakeirq);
- else
- disable_irq_nosync(up->wakeirq);
-}
-
+/* REVISIT: Remove this when omap3 boots in device tree only mode */
static void serial_omap_enable_wakeup(struct uart_omap_port *up, bool enable)
{
struct omap_uart_port_info *pdata = dev_get_platdata(up->dev);
- if (enable == up->wakeups_enabled)
- return;
-
- serial_omap_enable_wakeirq(up, enable);
- up->wakeups_enabled = enable;
-
if (!pdata || !pdata->enable_wakeup)
return;
@@ -750,13 +733,12 @@ static int serial_omap_startup(struct uart_port *port)
/* Optional wake-up IRQ */
if (up->wakeirq) {
- retval = request_irq(up->wakeirq, serial_omap_irq,
- up->port.irqflags, up->name, up);
+ retval = dev_pm_request_wake_irq(up->dev, up->wakeirq,
+ NULL, 0, NULL);
if (retval) {
free_irq(up->port.irq, up);
return retval;
}
- disable_irq(up->wakeirq);
}
dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->port.line);
@@ -845,8 +827,7 @@ static void serial_omap_shutdown(struct uart_port *port)
pm_runtime_mark_last_busy(up->dev);
pm_runtime_put_autosuspend(up->dev);
free_irq(up->port.irq, up);
- if (up->wakeirq)
- free_irq(up->wakeirq, up);
+ dev_pm_free_wake_irq(up->dev);
}
static void serial_omap_uart_qos_work(struct work_struct *work)
@@ -1139,13 +1120,6 @@ serial_omap_pm(struct uart_port *port, unsigned int state,
serial_out(up, UART_EFR, efr);
serial_out(up, UART_LCR, 0);
- if (!device_may_wakeup(up->dev)) {
- if (!state)
- pm_runtime_forbid(up->dev);
- else
- pm_runtime_allow(up->dev);
- }
-
pm_runtime_mark_last_busy(up->dev);
pm_runtime_put_autosuspend(up->dev);
}
@@ -1838,6 +1812,7 @@ static int serial_omap_runtime_suspend(struct device *dev)
up->context_loss_cnt = serial_omap_get_context_loss_count(up);
serial_omap_enable_wakeup(up, true);
+ dev_pm_enable_wake_irq(dev);
up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
schedule_work(&up->qos_work);
@@ -1852,6 +1827,7 @@ static int serial_omap_runtime_resume(struct device *dev)
int loss_cnt = serial_omap_get_context_loss_count(up);
serial_omap_enable_wakeup(up, false);
+ dev_pm_disable_wake_irq(dev);
if (loss_cnt < 0) {
dev_dbg(dev, "serial_omap_get_context_loss_count failed : %d\n",
--
2.1.4
--
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