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-rw-r--r--src/ec/google/chromeec/ec_dptf_helpers.c84
1 files changed, 75 insertions, 9 deletions
diff --git a/src/ec/google/chromeec/ec_dptf_helpers.c b/src/ec/google/chromeec/ec_dptf_helpers.c
index 74049ac703..8bb3435630 100644
--- a/src/ec/google/chromeec/ec_dptf_helpers.c
+++ b/src/ec/google/chromeec/ec_dptf_helpers.c
@@ -124,25 +124,91 @@ static void write_fan_fsl(const struct device *ec)
acpigen_pop_len(); /* Method _FSL */
}
-/* Note: requires manual insertion of acpigen_pop_len() for the If */
-static void write_is_policy_enabled(unsigned int index, bool enabled)
+/*
+ * Emit code to execute if the policy is enabled after this function is called, and also
+ * remember to manually add a acpigen_pop_len() afterwards!
+ */
+static void write_is_policy_enabled(bool enabled)
{
/*
- * If (And (LEqual (Deref (Index (IDSP, index)), Arg0))
- * (LEqual (Arg1, enabled)))
+ * Local0 = SizeOf (IDSP)
+ * Local1 = 0
+ * Local2 = 0
+ *
+ * While (Local1 < Local) {
+ * If (IDSP[Local1] == Arg0 && Arg1 == enabled) {
+ * Local2 = 1
+ * }
+ * Local1++
+ * }
+ *
+ * If (Local2 == 1) {
+ * ..........
+ */
+
+ /* Local0 = SizeOf (IDSP) */
+ acpigen_write_store();
+ acpigen_emit_byte(SIZEOF_OP);
+ acpigen_emit_namestring("IDSP");
+ acpigen_emit_byte(LOCAL0_OP);
+
+ /* Local1 = 0 (index variable) */
+ acpigen_write_store();
+ acpigen_write_zero();
+ acpigen_emit_byte(LOCAL1_OP);
+
+ /* Local2 = 0 (out variable, 1=found, 0=not found) */
+ acpigen_write_store();
+ acpigen_write_zero();
+ acpigen_emit_byte(LOCAL2_OP);
+
+ /*
+ * While (Local1 < Local0) {
*/
+ acpigen_emit_byte(WHILE_OP);
+ acpigen_write_len_f();
+ acpigen_emit_byte(LNOT_OP);
+ acpigen_emit_byte(LGREATER_OP);
+ acpigen_emit_byte(LOCAL1_OP);
+ acpigen_emit_byte(LOCAL0_OP);
+
+ /* If (IDSP[Local1] == Arg0 && Arg1 == 1) { */
acpigen_write_if();
acpigen_emit_byte(LAND_OP);
acpigen_emit_byte(LEQUAL_OP);
acpigen_emit_byte(DEREF_OP);
acpigen_emit_byte(INDEX_OP);
acpigen_emit_namestring("IDSP");
- acpigen_write_integer(index);
+ acpigen_emit_byte(LOCAL1_OP);
acpigen_emit_byte(ZERO_OP); /* 3rd arg of index - unused */
acpigen_emit_byte(ARG0_OP); /* end lequal */
acpigen_emit_byte(LEQUAL_OP);
acpigen_emit_byte(ARG1_OP);
acpigen_write_integer(enabled ? 1 : 0);
+
+ /* { Local2 = 1 } */
+ acpigen_write_store();
+ acpigen_write_one();
+ acpigen_emit_byte(LOCAL2_OP);
+ acpigen_pop_len(); /* If */
+
+ /*
+ * Local1++
+ * } # End of While
+ */
+ acpigen_emit_byte(INCREMENT_OP);
+ acpigen_emit_byte(LOCAL1_OP);
+ acpigen_pop_len(); /* While */
+
+ /*
+ * If (Local2 == 1)
+ */
+ acpigen_write_if();
+ acpigen_emit_byte(LEQUAL_OP);
+ acpigen_emit_byte(LOCAL2_OP);
+ acpigen_write_one();
+
+ /* caller must insert acpigen_pop_len() ! */
}
static void write_dptf_OSC(const struct device *ec)
@@ -165,21 +231,21 @@ static void write_dptf_OSC(const struct device *ec)
* 1) Disable temperature sensor trip points in the EC (replaces TINI)
* 2) Disable the charge limit in the EC (replaces TCHG.INIT)
*/
- write_is_policy_enabled(0, true);
+ write_is_policy_enabled(true);
for (i = 0; i < DPTF_MAX_TSR; ++i) {
snprintf(name, sizeof(name), "^TSR%1d.PATD", i);
acpigen_emit_namestring(name);
}
acpigen_emit_namestring(acpi_device_path_join(ec, "CHGD"));
- acpigen_pop_len(); /* If */
+ acpigen_pop_len(); /* If (from write_is_policy_enabled) */
/* If the Active Policy is disabled, disable DPTF fan control in the EC */
- write_is_policy_enabled(2, false);
+ write_is_policy_enabled(false);
acpigen_write_store();
acpigen_write_integer(EC_FAN_DUTY_AUTO);
acpigen_emit_namestring(acpi_device_path_join(ec, "FAND"));
- acpigen_pop_len(); /* If */
+ acpigen_pop_len(); /* If (from write_is_policy_enabled) */
acpigen_write_return_op(ARG3_OP);
acpigen_pop_len(); /* Method _OSC */