The sysfs control /sys/power/clocks_off_while_idle only affects
the UART clocks. And these can now be controlled with a UART
specific timeout sysfs control. The system default behavior
is to have the equivalent of clocks_off_while_idle == 1 and
a UART inactivity timeout of 5 seconds.
Now one can use
/sys/devices/platform/serial8250.<uart>/sleep_timeout
to set the inactivity timer for the UART in seconds. Setting
this value to zero disables the timout and is the equivalent
of doing an
echo 0 > /sys/power/clocks_off_while_idle
Signed-off-by: Kevin Hilman <khil...@deeprootsystems.com>
---
arch/arm/mach-omap2/pm.c | 12 ------------
arch/arm/mach-omap2/pm.h | 1 -
arch/arm/mach-omap2/serial.c | 3 ---
3 files changed, 0 insertions(+), 16 deletions(-)
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index 58ed520..8633f86 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -39,7 +39,6 @@
#include "pm.h"
unsigned short enable_dyn_sleep;
-unsigned short clocks_off_while_idle;
unsigned short enable_off_mode;
unsigned short voltage_off_while_idle;
unsigned short wakeup_timer_seconds;
@@ -52,9 +51,6 @@ static ssize_t idle_store(struct kobject *k, struct
kobj_attribute *,
static struct kobj_attribute sleep_while_idle_attr =
__ATTR(sleep_while_idle, 0644, idle_show, idle_store);
-static struct kobj_attribute clocks_off_while_idle_attr =
- __ATTR(clocks_off_while_idle, 0644, idle_show, idle_store);
-
static struct kobj_attribute enable_off_mode_attr =
__ATTR(enable_off_mode, 0644, idle_show, idle_store);
@@ -85,8 +81,6 @@ static ssize_t idle_show(struct kobject *kobj, struct
kobj_attribute *attr,
{
if (attr == &sleep_while_idle_attr)
return sprintf(buf, "%hu\n", enable_dyn_sleep);
- else if (attr == &clocks_off_while_idle_attr)
- return sprintf(buf, "%hu\n", clocks_off_while_idle);
else if (attr == &enable_off_mode_attr)
return sprintf(buf, "%hu\n", enable_off_mode);
else if (attr == &voltage_off_while_idle_attr)
@@ -109,8 +103,6 @@ static ssize_t idle_store(struct kobject *kobj, struct
kobj_attribute *attr,
if (attr == &sleep_while_idle_attr) {
enable_dyn_sleep = value;
- } else if (attr == &clocks_off_while_idle_attr) {
- clocks_off_while_idle = value;
} else if (attr == &enable_off_mode_attr) {
enable_off_mode = value;
omap3_pm_off_mode_enable(enable_off_mode);
@@ -255,10 +247,6 @@ static int __init omap_pm_init(void)
if (error)
printk(KERN_ERR "sysfs_create_file failed: %d\n", error);
error = sysfs_create_file(power_kobj,
- &clocks_off_while_idle_attr.attr);
- if (error)
- printk(KERN_ERR "sysfs_create_file failed: %d\n", error);
- error = sysfs_create_file(power_kobj,
&enable_off_mode_attr.attr);
if (error) {
printk(KERN_ERR "sysfs_create_file failed: %d\n", error);
diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h
index e523d75..2547e1b 100644
--- a/arch/arm/mach-omap2/pm.h
+++ b/arch/arm/mach-omap2/pm.h
@@ -24,7 +24,6 @@ static inline int omap3_idle_init(void) { return 0; }
#endif
extern unsigned short enable_dyn_sleep;
-extern unsigned short clocks_off_while_idle;
extern unsigned short enable_off_mode;
extern unsigned short voltage_off_while_idle;
extern atomic_t sleep_block;
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index c9059fd..8c27700 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -263,9 +263,6 @@ void omap_uart_prepare_idle(int num)
struct omap_uart_state *uart;
list_for_each_entry(uart, &uart_list, node) {
- if (!clocks_off_while_idle)
- continue;
-
if (num == uart->num && uart->can_sleep) {
omap_uart_disable_clocks(uart);
return;
--
1.6.2.2
--
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