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kirby: Detect OTG dongle on EC boot

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This fixes the problem that after an EC reboot, OTG dongle stops
working.

BUG=chrome-os-partner:21964
TEST=Reboot EC and boot from OTG dongle.
BRANCH=None

Change-Id: Ieec43f612d01114d13afb40293acfd0b3e324e8c
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/168737
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
This commit is contained in:
Vic Yang
2013-09-10 16:20:13 +08:00
committed by chrome-internal-fetch
parent bd9d1746c7
commit b28e92a855
1 changed files with 20 additions and 11 deletions
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31
common/extpower_kirby.c
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@@ -26,15 +26,29 @@ int extpower_is_present(void)
return !gpio_get_level(GPIO_AC_PRESENT_L);
}
static void extpower_update_otg(void)
{
int dev_type, is_otg;
dev_type = tsu6721_get_device_type();
is_otg = dev_type & TSU6721_TYPE_OTG;
if (is_otg && !gpio_get_level(GPIO_BCHGR_OTG)) {
charger_enable_otg_power(1);
CPRINTF("[%T OTG power enabled]\n");
} else if (!is_otg && gpio_get_level(GPIO_BCHGR_OTG)) {
charger_enable_otg_power(0);
CPRINTF("[%T OTG power disabled]\n");
}
}
static void extpower_deferred(void)
{
int int_val, dev_type, is_otg;
int int_val;
int ac;
static int last_ac = -1;
int_val = tsu6721_get_interrupts();
dev_type = tsu6721_get_device_type();
is_otg = dev_type & TSU6721_TYPE_OTG;
ac = extpower_is_present();
if (last_ac != ac) {
@@ -45,13 +59,7 @@ static void extpower_deferred(void)
if (!int_val)
return;
if (is_otg && !gpio_get_level(GPIO_BCHGR_OTG)) {
charger_enable_otg_power(1);
CPRINTF("[%T OTG power enabled]\n");
} else if (!is_otg && gpio_get_level(GPIO_BCHGR_OTG)) {
charger_enable_otg_power(0);
CPRINTF("[%T OTG power disabled]\n");
}
extpower_update_otg();
}
DECLARE_DEFERRED(extpower_deferred);
@@ -60,9 +68,10 @@ DECLARE_DEFERRED(extpower_deferred);
static void extpower_init(void)
{
tsu6721_init();
tsu6721_reset();
gpio_enable_interrupt(GPIO_USB_CHG_INT);
gpio_enable_interrupt(GPIO_AC_PRESENT_L);
extpower_update_otg();
}
DECLARE_HOOK(HOOK_INIT, extpower_init, HOOK_PRIO_LAST);