diff options
| author | Raul E Rangel <rrangel@chromium.org> | 2021-04-19 15:58:25 -0600 |
|---|---|---|
| committer | Raul Rangel <rrangel@chromium.org> | 2021-04-21 22:27:55 +0000 |
| commit | c7048323f4a635ec854b2792a00ae47b1775d9f7 (patch) | |
| tree | 63ea85da1bd8e70da54c88c2cda74d28e3f17577 /src/include/acpi | |
| parent | a89a4ea8ea04aaf369cd99f487f3537fe9e46702 (diff) | |
acpi: Add acpigen_write_LPI_package
Low Power Idle States defines additional information not present in the
_CST.
See ACPI Specification, Version 6.3 Section 8.4.4.3 _LPI.
BUG=b:178728116, b:185787242
TEST=Boot guybrush and dump ACPI tables
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Signed-off-by: Jason Glenesk <jason.glenesk@amd.corp-partner.google.com>
Change-Id: I4f5301b95ff8245facaf48e2fbd51cc82df2d8cc
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52529
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Diffstat (limited to 'src/include/acpi')
| -rw-r--r-- | src/include/acpi/acpi.h | 19 | ||||
| -rw-r--r-- | src/include/acpi/acpigen.h | 1 |
2 files changed, 20 insertions, 0 deletions
diff --git a/src/include/acpi/acpi.h b/src/include/acpi/acpi.h index 932fb6fee8..7f086791c0 100644 --- a/src/include/acpi/acpi.h +++ b/src/include/acpi/acpi.h @@ -898,6 +898,25 @@ typedef struct acpi_tstate { u32 status; } __packed acpi_tstate_t; +enum acpi_lpi_state_flags { + ACPI_LPI_STATE_DISABLED = 0, + ACPI_LPI_STATE_ENABLED +}; + +/* Low Power Idle State */ +struct acpi_lpi_state { + u32 min_residency_us; + u32 worst_case_wakeup_latency_us; + u32 flags; + u32 arch_context_lost_flags; + u32 residency_counter_frequency_hz; + u32 enabled_parent_state; + acpi_addr_t entry_method; + acpi_addr_t residency_counter_register; + acpi_addr_t usage_counter_register; + const char *state_name; +}; + /* Port types for ACPI _UPC object */ enum acpi_upc_type { UPC_TYPE_A, diff --git a/src/include/acpi/acpigen.h b/src/include/acpi/acpigen.h index c79828819d..0e8d29a81f 100644 --- a/src/include/acpi/acpigen.h +++ b/src/include/acpi/acpigen.h @@ -338,6 +338,7 @@ inline void acpigen_write_device_end(void) { acpigen_pop_len(); } +void acpigen_write_LPI_package(u64 level, const struct acpi_lpi_state *states, u16 nentries); void acpigen_write_PPC(u8 nr); void acpigen_write_PPC_NVS(void); void acpigen_write_empty_PCT(void); |