| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <acpi/acpi.h> |
| #include <acpi/acpi_pm.h> |
| #include <assert.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| #include <smbios.h> |
| |
| static const char *pm_fetch_failure_msg[PS_CLAIMER_MAX] = { |
| [PS_CLAIMER_ELOG] = "no event recorded in ELOG.", |
| [PS_CLAIMER_RTC] = "RTC init aborted.", |
| [PS_CLAIMER_WAKE] = "wake source unknown.", |
| }; |
| |
| void __weak mainboard_suspend_resume(void) |
| { |
| } |
| |
| /* Default mapping to ACPI FADT preferred_pm_profile field. */ |
| uint8_t acpi_get_preferred_pm_profile(void) |
| { |
| switch (smbios_mainboard_enclosure_type()) { |
| case SMBIOS_ENCLOSURE_LAPTOP: |
| case SMBIOS_ENCLOSURE_CONVERTIBLE: |
| return PM_MOBILE; |
| case SMBIOS_ENCLOSURE_DETACHABLE: |
| case SMBIOS_ENCLOSURE_TABLET: |
| return PM_TABLET; |
| case SMBIOS_ENCLOSURE_DESKTOP: |
| return PM_DESKTOP; |
| case SMBIOS_ENCLOSURE_UNKNOWN: |
| default: |
| return PM_UNSPECIFIED; |
| } |
| } |
| |
| struct chipset_power_state *acpi_get_pm_state(void) |
| { |
| static struct chipset_power_state *acpi_pm_state; |
| if (acpi_pm_state) |
| return acpi_pm_state; |
| |
| acpi_pm_state = cbmem_find(CBMEM_ID_POWER_STATE); |
| return acpi_pm_state; |
| } |
| |
| int acpi_fetch_pm_state(const struct chipset_power_state **ps, |
| enum power_state_claimer ps_claimer) |
| { |
| assert(ps_claimer < PS_CLAIMER_MAX); |
| *ps = acpi_get_pm_state(); |
| |
| if (!*ps) { |
| printk(BIOS_ERR, "No CBMEM_ID_POWER_STATE entry, %s\n", |
| ps_claimer < PS_CLAIMER_MAX ? |
| pm_fetch_failure_msg[ps_claimer] : "unknown claimer."); |
| return -1; |
| } |
| return 0; |
| } |