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drivers/intel/dptf: Add support for PROP method 

Add PROP method under \_SB.DPTF.TPWR scope which will return static
worst case rest of platform power in miliWatts.

This value is static, which has to configured from devicetree of
overridetree for each platform

BUG=b:205928013
TEST=Build, boot brya0 and dump SSDT to check PROP method

Scope (\_SB)
{
    Device (DPTF)
    {
        Device (TPWR)
        {
            Method (PROP, 0, Serialized)
            {
                Return (XXXX)
            }
        }
    }
}

Signed-off-by: Varshit B Pandya <varshit.b.pandya@intel.com>
Change-Id: I1415d2a9eb55cfadc3a7b41b53ecbec657002759
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63697
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
This commit is contained in:
Varshit B Pandya 2022-04-18 14:50:30 +05:30 committed by Felix Held
parent 5784ab34d4
commit 282b3b6873
2 changed files with 17 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/drivers/intel/dptf/chip.h
View File

@ -59,6 +59,9 @@ struct drivers_intel_dptf_config {
struct {
uint32_t oem_variables[DPTF_OEM_VARIABLE_COUNT];
} oem_data;
/* Rest of platform Power */
uint32_t prop;
};
#endif /* _DRIVERS_INTEL_DPTF_CHIP_H_ */

18
src/drivers/intel/dptf/dptf.c
View File

@ -372,7 +372,8 @@ static void write_tpch_methods(const struct dptf_platform_info *platform_info)
acpigen_write_device_end(); /* TPCH Device */
}
static void write_create_tpwr(const struct dptf_platform_info *platform_info)
static void write_create_tpwr(const struct drivers_intel_dptf_config *config,
const struct dptf_platform_info *platform_info)
{
acpigen_write_device("TPWR");
acpigen_write_name("_HID");
@ -382,12 +383,21 @@ static void write_create_tpwr(const struct dptf_platform_info *platform_info)
acpigen_write_name_string("_STR", DEFAULT_POWER_STR);
acpigen_write_name_integer("PTYP", DPTF_GENERIC_PARTICIPANT_TYPE_POWER);
acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON);
/* PROP method */
if(config->prop != 0) {
acpigen_write_method_serialized("PROP", 0);
acpigen_emit_byte(RETURN_OP);
acpigen_write_integer(config->prop);
acpigen_pop_len(); /* Method PROP */
}
acpigen_write_device_end(); /* TPWR Power Participant Device */
}
static void write_tpwr_methods(const struct dptf_platform_info *platform_info)
static void write_tpwr_methods(const struct drivers_intel_dptf_config *config,
const struct dptf_platform_info *platform_info)
{
write_create_tpwr(platform_info);
write_create_tpwr(config, platform_info);
}
static void write_create_tbat(const struct dptf_platform_info *platform_info)
@ -449,7 +459,7 @@ static void write_device_definitions(const struct device *dev)
write_tpch_methods(platform_info);
if (CONFIG(DRIVERS_INTEL_DPTF_SUPPORTS_TPWR))
write_tpwr_methods(platform_info);
write_tpwr_methods(config, platform_info);
if (CONFIG(DRIVERS_INTEL_DPTF_SUPPORTS_TBAT))
write_tbat_methods(platform_info);