diff options
Diffstat (limited to 'baseboard/kukui/usb_pd_policy.c')
| -rw-r--r-- | baseboard/kukui/usb_pd_policy.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/baseboard/kukui/usb_pd_policy.c b/baseboard/kukui/usb_pd_policy.c index 2344c41427..311b0f2663 100644 --- a/baseboard/kukui/usb_pd_policy.c +++ b/baseboard/kukui/usb_pd_policy.c @@ -8,6 +8,7 @@ #include "charger.h" #include "console.h" #include "gpio.h" +#include "hooks.h" #include "system.h" #include "timer.h" #include "usb_mux.h" @@ -29,6 +30,31 @@ static int board_get_polarity(int port) static uint8_t vbus_en; +#define VBUS_EN_SYSJUMP_TAG 0x5645 /* VE */ +#define VBUS_EN_HOOK_VERSION 1 + +static void vbus_en_preserve_state(void) +{ + system_add_jump_tag(VBUS_EN_SYSJUMP_TAG, VBUS_EN_HOOK_VERSION, + sizeof(vbus_en), &vbus_en); +} +DECLARE_HOOK(HOOK_SYSJUMP, vbus_en_preserve_state, HOOK_PRIO_DEFAULT); + +static void vbus_en_restore_state(void) +{ + const uint8_t *prev_vbus_en; + int size, version; + + prev_vbus_en = (const uint8_t *)system_get_jump_tag( + VBUS_EN_SYSJUMP_TAG, &version, &size); + + if (prev_vbus_en && version == VBUS_EN_HOOK_VERSION && + size == sizeof(*prev_vbus_en)) { + memcpy(&vbus_en, prev_vbus_en, sizeof(vbus_en)); + } +} +DECLARE_HOOK(HOOK_INIT, vbus_en_restore_state, HOOK_PRIO_DEFAULT); + int board_vbus_source_enabled(int port) { return vbus_en; |