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apollolake: Do not power-on AP till sufficient power is provided

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Do not power-on the AP unless battery can provide sufficient power
or the charger is negotiated to sufficient power.

BUG=chrome-os-partner:56494
BRANCH=none
TEST=Manually tested on Reef. Device can boot to OS without the
     battery & cut-off battery.

Change-Id: Ib22bad81a29ccbb2fecc8e835148b627dd722988
Signed-off-by: Vijay Hiremath <vijay.p.hiremath@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/374023
Commit-Ready: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Tested-by: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Vijay Hiremath
2016-08-22 16:15:59 -07:00
committed by chrome-bot
parent 748b5bad9f
commit f322e32a3e
2 changed files with 19 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
board/reef/battery.c
View File

@@ -34,6 +34,14 @@ static const struct battery_info info = {
.discharging_max_c = 60,
};
#ifdef CONFIG_BATTERY_PRESENT_CUSTOM
static inline enum battery_present battery_hw_present(void)
{
/* The GPIO is low when the battery is physically present */
return gpio_get_level(GPIO_EC_BATT_PRES_L) ? BP_NO : BP_YES;
}
#endif
const struct battery_info *battery_get_info(void)
{
return &info;
@@ -105,8 +113,12 @@ enum battery_disconnect_state battery_get_disconnect_state(void)
if (rv || data[2] || data[3] || data[4] || data[5])
return BATTERY_DISCONNECT_ERROR;
/* No safety fault, battery is disconnected */
return BATTERY_DISCONNECTED;
/*
* Battery is present and also the status is initialized and
* no safety fault, battery is disconnected.
*/
if (battery_is_present() == BP_YES)
return BATTERY_DISCONNECTED;
}
not_disconnected = 1;
return BATTERY_NOT_DISCONNECTED;
@@ -296,8 +308,8 @@ enum battery_present battery_is_present(void)
enum battery_present batt_pres;
int batt_status;
/* The GPIO is low when the battery is physically present */
batt_pres = gpio_get_level(GPIO_EC_BATT_PRES_L) ? BP_NO : BP_YES;
/* Get the physical hardware status */
batt_pres = battery_hw_present();
/*
* Make sure battery status is implemented, I2C transactions are

6
power/apollolake.c
View File

@@ -256,9 +256,6 @@ static enum power_state _power_handle_state(enum power_state state)
/* Platform is powering up, clear forcing_coldreset */
forcing_coldreset = 0;
/* Call hooks to initialize PMIC */
hook_notify(HOOK_CHIPSET_PRE_INIT);
/*
* Allow up to 1s for charger to be initialized, in case
* we're trying to boot the AP with no battery.
@@ -276,6 +273,9 @@ static enum power_state _power_handle_state(enum power_state state)
return POWER_G3;
}
/* Call hooks to initialize PMIC */
hook_notify(HOOK_CHIPSET_PRE_INIT);
/* Wait for RSMRST_L de-assert */
if (power_wait_signals(IN_PGOOD_ALL_CORE)) {
chipset_force_shutdown();