[coreboot-gerrit] Change in coreboot[master]: ec/google/chromeec: add fan speed rpm control

[Sumeet R Pawnikar (Code Review)]

Sumeet R Pawnikar has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/62789 )

Change subject: ec/google/chromeec: add fan speed rpm control
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ec/google/chromeec: add fan speed rpm control

Add fan speed rpm control for DPTF based Active2 policy.

BUG=b:224457192
BRANCH=None
TEST=Built and booted on ADL-P based Brya system

Change-Id: Ibb1646b1fb1659fd853ece97d97bb9dee2a3f57e
Signed-off-by: Sumeet Pawnikar 
---
M src/ec/google/chromeec/acpi/ec.asl
M src/ec/google/chromeec/ec_dptf_helpers.c
2 files changed, 7 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/89/62789/1

diff --git a/src/ec/google/chromeec/acpi/ec.asl b/src/ec/google/chromeec/acpi/ec.asl
index 69d608b..afb2293 100644
--- a/src/ec/google/chromeec/acpi/ec.asl
+++ b/src/ec/google/chromeec/acpi/ec.asl
@@ -82,6 +82,7 @@
    	BTID, 8,	// Battery index that host wants to read
    	USPP, 8,	// USB Port Power
    	RFWU, 8,	// Retimer Firmware Update
+		CFSP, 8,	// Set Fan speed in rpm
    }

#if CONFIG(EC_GOOGLE_CHROMEEC_ACPI_MEMMAP)
diff --git a/src/ec/google/chromeec/ec_dptf_helpers.c b/src/ec/google/chromeec/ec_dptf_helpers.c
index 94b13fb..e54a034 100644
--- a/src/ec/google/chromeec/ec_dptf_helpers.c
+++ b/src/ec/google/chromeec/ec_dptf_helpers.c
@@ -109,6 +109,12 @@
    acpigen_emit_namestring("TFST");
    acpigen_write_integer(1);
    acpigen_emit_byte(ZERO_OP); /* 3rd arg to Index */
+	acpigen_write_store();
+	acpigen_emit_namestring(acpi_device_path_join(ec, "CFSP"));
+	acpigen_emit_byte(INDEX_OP);
+	acpigen_emit_namestring("TFST");
+	acpigen_write_integer(2);
+	acpigen_emit_byte(ZERO_OP);
    acpigen_emit_byte(RETURN_OP);
    acpigen_emit_namestring("TFST");
    acpigen_pop_len(); /* Method _FST */