scottk/OpenCellular
1
0
Fork 0
mirror of https://github.com/Telecominfraproject/OpenCellular.git synced 2025-12-28 10:45:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add per-second hook

Browse Source 
PWM and temp sensor monitoring want to happen every second,
vs. several times a second for watchdog and LPC.

This is still considerably simpler than having tick functions declare
an interval at which they want to be called, which would require a
RAM-based array of pending tick functions and alarm times.  If you
need that level of complexity, you still need a task.

BUG=chrome-os-partner:15714
BRANCH=none

TEST=temporarily add HOOK_TICK and HOOK_SECOND hooks and see that on
LM4, HOOK_TICK is called 4x a second and HOOK_SECOND is called every
second.

Change-Id: I5c09842fd356d3254021486949b2799142068b4f
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/36938
Commit-Ready: Simon Glass <sjg@chromium.org>
This commit is contained in:
Randall Spangler
2012-10-30 13:01:55 -07:00
committed by Gerrit
parent 8b3a242ff0
commit 433f98c6b6
4 changed files with 16 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
common/hooks.c
View File

@@ -31,6 +31,7 @@ static const struct hook_ptrs hook_list[] = {
{__hooks_ac_change, __hooks_ac_change_end},
{__hooks_lid_change, __hooks_lid_change_end},
{__hooks_tick, __hooks_tick_end},
{__hooks_second, __hooks_second_end},
};
void hook_notify(enum hook_type type)
@@ -64,11 +65,19 @@ void hook_notify(enum hook_type type)
void hook_task(void)
{
/* Per-second hook will be called first time through the loop */
static uint64_t last_second = -SECOND;
while (1) {
uint64_t t = get_time().val;
hook_notify(HOOK_TICK);
if (t - last_second >= SECOND) {
hook_notify(HOOK_SECOND);
last_second = t;
}
/* Use up the rest of our hook tick interval */
t = get_time().val - t;
if (t < HOOK_TICK_INTERVAL)

4
core/cortex-m/ec.lds.S
View File

@@ -100,6 +100,10 @@ SECTIONS
*(.rodata.HOOK_TICK)
__hooks_tick_end = .;
__hooks_second = .;
*(.rodata.HOOK_SECOND)
__hooks_second_end = .;
. = ALIGN(4);
*(.rodata*)

2
core/cortex-m/link_defs.h
View File

@@ -40,6 +40,8 @@ extern const struct hook_data __hooks_lid_change[];
extern const struct hook_data __hooks_lid_change_end[];
extern const struct hook_data __hooks_tick[];
extern const struct hook_data __hooks_tick_end[];
extern const struct hook_data __hooks_second[];
extern const struct hook_data __hooks_second_end[];
/* Host commands */
extern const struct host_command __hcmds[];

1
include/hooks.h
View File

@@ -48,6 +48,7 @@ enum hook_type {
HOOK_LID_CHANGE, /* Lid opened or closed. Based on debounced lid
* state, not raw lid GPIO input. */
HOOK_TICK, /* Periodic tick, every HOOK_TICK_INTERVAL */
HOOK_SECOND, /* Periodic tick, every second */
};
struct hook_data {