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sys_agent: add option to temporarily enable/disable 

This patch adds an option to temporarily disable system
agent. This is especially needed when SOF is performing
long last tasks like draining.

Signed-off-by: Marcin Rajwa <marcin.rajwa@linux.intel.com>
This commit is contained in:
Marcin Rajwa 2019-06-15 23:02:46 +02:00 committed by Janusz Jankowski
parent f7809a2ee3
commit c4a7fe191a
2 changed files with 21 additions and 2 deletions
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4
src/include/sof/lib/agent.h
View File

@ -9,6 +9,7 @@
#define __SOF_LIB_AGENT_H__
#include <sof/schedule/task.h>
#include <stdbool.h>
#include <stdint.h>
struct sof;
@ -18,9 +19,12 @@ struct sa {
uint64_t last_idle; /* time of last idle */
uint64_t ticks;
struct task work;
bool is_active;
};
void sa_enter_idle(struct sof *sof);
void sa_init(struct sof *sof);
void sa_disable(void);
void sa_enable(void);
#endif /* __SOF_LIB_AGENT_H__ */

19
src/lib/agent.c
View File

@ -32,6 +32,8 @@
#define trace_sa_value(__e, ...) \
trace_value_atomic(__e, ##__VA_ARGS__)
struct sa *sa;
/*
* Notify the SA that we are about to enter idle state (WFI).
*/
@ -52,7 +54,8 @@ static uint64_t validate(void *data)
delta = current - sa->last_idle;
/* were we last idle longer than timeout */
if (delta > sa->ticks) {
if (delta > sa->ticks && sa->is_active) {
trace_sa("validate(), idle longer than timeout, delta = %u",
delta);
panic(SOF_IPC_PANIC_IDLE);
@ -63,7 +66,6 @@ static uint64_t validate(void *data)
void sa_init(struct sof *sof)
{
struct sa *sa;
trace_sa("sa_init()");
@ -73,13 +75,26 @@ void sa_init(struct sof *sof)
/* set default tick timeout */
sa->ticks = clock_ms_to_ticks(PLATFORM_WORKQ_CLOCK, 1) *
PLATFORM_IDLE_TIME / 1000;
trace_sa("sa_init(), sa->ticks = %u", sa->ticks);
/* set lst idle time to now to give time for boot completion */
sa->last_idle = platform_timer_get(platform_timer) + sa->ticks;
sa->is_active = true;
schedule_task_init(&sa->work, SOF_SCHEDULE_LL, SOF_TASK_PRI_HIGH,
validate, sa, 0, 0);
schedule_task(&sa->work, PLATFORM_IDLE_TIME, 0, 0);
}
void sa_disable(void)
{
sa->is_active = false;
}
void sa_enable(void)
{
sa->is_active = true;
sa->last_idle = platform_timer_get(platform_timer);
}