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intel_x86: Auto power-on after battery SOC is above minimum required

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If power-up is inhibited by charger because of battery SOC, then check
for the conditions again on BATTERY_SOC_CHANGE. This allows the EC to
boot the AP up on connecting AC power and SOC going above the minimum
required.

BUG=b:65864825
BRANCH=None
TEST=Verified following on coral and soraka:
1. Discharge battery to ~0%
2. Connect AC power ==> Power-up is inhibited
3. When battery SOC reaches 1%. AP is not taken out of reset:
"[12.974428 Battery 1% / 8h:4 to full]
[12.980439 power-up still inhibited]"
4. When battery SOC reaches 2%, AP is taken out of reset:
"[9.230148 Battery 2% / 4h:5 to full]
[9.236122 Battery SOC ok to boot AP!]"

Change-Id: Ifa89f8929987d86c9e02530b663d563dbe25ed85
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/753294
Reviewed-by: Shawn N <shawnn@chromium.org>
This commit is contained in:
Furquan Shaikh
2017-11-03 09:25:34 -07:00
committed by chrome-bot
parent 4815373754
commit c147530f10
1 changed files with 49 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
power/intel_x86.c
View File

@@ -58,6 +58,42 @@ static const int sleep_sig[] = {
static int power_s5_up; /* Chipset is sequencing up or down */
#ifdef CONFIG_CHARGER
/* Flag to indicate if power up was inhibited due to low battery SOC level. */
static int power_up_inhibited;
/*
* Check if AP power up should be inhibited.
* 0 = Ok to boot up AP
* 1 = AP power up is inhibited.
*/
static int is_power_up_inhibited(void)
{
/* Defaulting to power button not pressed. */
const int power_button_pressed = 0;
return charge_prevent_power_on(power_button_pressed) ||
charge_want_shutdown();
}
static void power_up_inhibited_cb(void)
{
if (!power_up_inhibited)
return;
if (is_power_up_inhibited()) {
CPRINTS("power-up still inhibited");
return;
}
CPRINTS("Battery SOC ok to boot AP!");
power_up_inhibited = 0;
chipset_exit_hard_off();
}
DECLARE_HOOK(HOOK_BATTERY_SOC_CHANGE, power_up_inhibited_cb, HOOK_PRIO_DEFAULT);
#endif
/* Get system sleep state through GPIOs or VWs */
static inline int chipset_get_sleep_signal(enum sys_sleep_state state)
{
@@ -275,22 +311,30 @@ enum power_state common_intel_x86_power_handle_state(enum power_state state)
#ifdef CONFIG_CHARGER
{
int tries = 0;
/*
* Allow charger to be initialized for upto defined tries,
* in case we're trying to boot the AP with no battery.
*/
while (charge_prevent_power_on(0) &&
tries++ < CHARGER_INITIALIZED_TRIES) {
while ((tries < CHARGER_INITIALIZED_TRIES) &&
is_power_up_inhibited()) {
msleep(CHARGER_INITIALIZED_DELAY_MS);
tries++;
}
/* Return to G3 if battery level is too low */
if (charge_want_shutdown() ||
tries > CHARGER_INITIALIZED_TRIES) {
/*
* Return to G3 if battery level is too low. Set
* power_up_inhibited in order to check the eligibility to boot
* AP up after battery SOC changes.
*/
if (tries == CHARGER_INITIALIZED_TRIES) {
CPRINTS("power-up inhibited");
power_up_inhibited = 1;
chipset_force_shutdown();
return POWER_G3;
}
power_up_inhibited = 0;
}
#endif