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Split lid handling into separate functions and add command interface

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This has been useful for me to be able to test lid behavior remotely
since it is not available via servo.

This also has a minor change to send a task message after sending
the power button pulse so the state machine behaves properly.

BUG=none
TEST=Execute 'lidclose' and 'lidopen' commands via ec uart and
see the appropriate events set and wake behavior when the system
is off.  With a (not yet published) coreboot I am able to handle
lid close events to enter suspend.

Change-Id: Iec1c68121d42b66305ba5dfd20e81453538a97e2
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Duncan Laurie
2012-04-04 18:47:20 -07:00
parent 6abb3579af
commit 9936df2b8b
1 changed files with 53 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

72
chip/lm4/power_button.c
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@@ -177,30 +177,48 @@ static void power_button_changed(uint64_t tnow)
}
/* Lid open */
static void lid_switch_open(uint64_t tnow)
{
uart_printf("[%T PB lid open]\n");
*memmap_switches |= EC_LPC_SWITCH_LID_OPEN;
lpc_set_host_events(EC_LPC_HOST_EVENT_MASK(
EC_LPC_HOST_EVENT_LID_OPEN));
/* If the chipset is is soft-off, send a power button pulse to
* wake up the chipset. */
if (chipset_in_state(CHIPSET_STATE_SOFT_OFF)) {
set_pwrbtn_to_pch(0);
pwrbtn_state = PWRBTN_STATE_STOPPING;
tnext_state = tnow + LID_PWRBTN_US;
task_wake(TASK_ID_POWERBTN);
}
}
/* Lid close */
static void lid_switch_close(uint64_t tnow)
{
uart_printf("[%T PB lid close]\n");
*memmap_switches &= ~EC_LPC_SWITCH_LID_OPEN;
lpc_set_host_events(EC_LPC_HOST_EVENT_MASK(
EC_LPC_HOST_EVENT_LID_CLOSED));
}
/* Handle debounced lid switch changing state */
static void lid_switch_changed(uint64_t tnow)
{
int v = gpio_get_level(GPIO_LID_SWITCHn);
uart_printf("[%T PB lid %s]\n", v ? "open" : "closed");
lpc_set_host_events(EC_LPC_HOST_EVENT_MASK((v ?
EC_LPC_HOST_EVENT_LID_OPEN : EC_LPC_HOST_EVENT_LID_CLOSED)));
if (v) {
/* Lid open */
*memmap_switches |= EC_LPC_SWITCH_LID_OPEN;
/* If the chipset is is soft-off, send a power button pulse to
* wake up the chipset. */
if (chipset_in_state(CHIPSET_STATE_SOFT_OFF)) {
set_pwrbtn_to_pch(0);
pwrbtn_state = PWRBTN_STATE_STOPPING;
tnext_state = tnow + LID_PWRBTN_US;
}
} else {
/* Lid closed */
*memmap_switches &= ~EC_LPC_SWITCH_LID_OPEN;
}
if (v)
lid_switch_open(tnow);
else
lid_switch_close(tnow);
}
@@ -346,3 +364,19 @@ static int command_powerbtn(int argc, char **argv)
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(powerbtn, command_powerbtn);
static int command_lidopen(int argc, char **argv)
{
lid_switch_open(get_time().val);
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(lidopen, command_lidopen);
static int command_lidclose(int argc, char **argv)
{
lid_switch_close(get_time().val);
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(lidclose, command_lidclose);