mirror of
https://github.com/torvalds/linux.git
synced 2024-12-29 14:21:47 +00:00
10034aabca
When a CPU is hot unplugged, the generic tick code cleans up the clock event device, but fails to call down to the device's set_mode function to actually shut the device down. To work around this, we've historically had a local_timer_stop() callback out of the hotplug code. However, this adds needless complexity when we have the clock event device itself available. Explicitly call the clock event device's set_mode function with CLOCK_EVT_MODE_UNUSED, so that the hardware can be cleanly shutdown without any special external callbacks. When/if the generic code is fixed, percpu_timer_stop() can be killed off. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
29 lines
688 B
C
29 lines
688 B
C
#ifndef __ASMARM_SMP_TWD_H
|
|
#define __ASMARM_SMP_TWD_H
|
|
|
|
#define TWD_TIMER_LOAD 0x00
|
|
#define TWD_TIMER_COUNTER 0x04
|
|
#define TWD_TIMER_CONTROL 0x08
|
|
#define TWD_TIMER_INTSTAT 0x0C
|
|
|
|
#define TWD_WDOG_LOAD 0x20
|
|
#define TWD_WDOG_COUNTER 0x24
|
|
#define TWD_WDOG_CONTROL 0x28
|
|
#define TWD_WDOG_INTSTAT 0x2C
|
|
#define TWD_WDOG_RESETSTAT 0x30
|
|
#define TWD_WDOG_DISABLE 0x34
|
|
|
|
#define TWD_TIMER_CONTROL_ENABLE (1 << 0)
|
|
#define TWD_TIMER_CONTROL_ONESHOT (0 << 1)
|
|
#define TWD_TIMER_CONTROL_PERIODIC (1 << 1)
|
|
#define TWD_TIMER_CONTROL_IT_ENABLE (1 << 2)
|
|
|
|
struct clock_event_device;
|
|
|
|
extern void __iomem *twd_base;
|
|
|
|
int twd_timer_ack(void);
|
|
void twd_timer_setup(struct clock_event_device *);
|
|
|
|
#endif
|