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ACPI: Add usb_charge_mode_from_gnvs()

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Early Chromebook generations stored the information about
USB port power control for S3/S5 sleepstates in GNVS, although
the configuration is static.

Reduce code duplication and react to ACPI S4 as if it was ACPI
S5 request.

Change-Id: I7e6f37a023b0e9317dcf0355dfa70e28d51cdad9
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74524
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
This commit is contained in:
Kyösti Mälkki 2022-12-02 15:30:10 +02:00
commit 027f86e6af
34 changed files with 94 additions and 159 deletions
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3
src/include/acpi/acpi_gnvs.h
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@ -18,6 +18,9 @@ static inline void *acpi_get_gnvs(void) { return NULL; }
static inline int acpi_reset_gnvs_for_wake(struct global_nvs **gnvs) { return -1; }
#endif
/* Return GNVS fields for USB0/1 disablement for S3/S4/S5 sleep states. */
void usb_charge_mode_from_gnvs(uint8_t slp_typ, bool *usb0_disable, bool *usb1_disable);
/*
* These functions populate the gnvs structure in acpi table.
* Defined as weak in common acpi as gnvs structure definition is