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-rw-r--r--src/acpi/acpigen.c40
-rw-r--r--src/include/acpi/acpigen.h20
2 files changed, 60 insertions, 0 deletions
diff --git a/src/acpi/acpigen.c b/src/acpi/acpigen.c
index 793841cc5b..efc5a16195 100644
--- a/src/acpi/acpigen.c
+++ b/src/acpi/acpigen.c
@@ -339,6 +339,18 @@ void acpigen_write_scope(const char *name)
acpigen_emit_namestring(name);
}
+void acpigen_get_package_op_element(uint8_t package_op, unsigned int element, uint8_t dest_op)
+{
+ /* <dest_op> = DeRefOf (<package_op>[<element]) */
+ acpigen_write_store();
+ acpigen_emit_byte(DEREF_OP);
+ acpigen_emit_byte(INDEX_OP);
+ acpigen_emit_byte(package_op);
+ acpigen_write_integer(element);
+ acpigen_emit_byte(ZERO_OP); /* Ignore Index() Destination */
+ acpigen_emit_byte(dest_op);
+}
+
void acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len)
{
/*
@@ -1269,6 +1281,20 @@ void acpigen_write_if_and(uint8_t arg1, uint8_t arg2)
}
/*
+ * Generates ACPI code for checking if operand1 and operand2 are equal.
+ * Both operand1 and operand2 are ACPI ops.
+ *
+ * If (Lequal (op,1 op2))
+ */
+void acpigen_write_if_lequal_op_op(uint8_t op1, uint8_t op2)
+{
+ acpigen_write_if();
+ acpigen_emit_byte(LEQUAL_OP);
+ acpigen_emit_byte(op1);
+ acpigen_emit_byte(op2);
+}
+
+/*
* Generates ACPI code for checking if operand1 and operand2 are equal, where,
* operand1 is ACPI op and operand2 is an integer.
*
@@ -1341,6 +1367,12 @@ void acpigen_write_return_singleton_buffer(uint8_t arg)
acpigen_write_return_byte_buffer(&arg, 1);
}
+void acpigen_write_return_op(uint8_t arg)
+{
+ acpigen_emit_byte(RETURN_OP);
+ acpigen_emit_byte(arg);
+}
+
void acpigen_write_return_byte(uint8_t arg)
{
acpigen_emit_byte(RETURN_OP);
@@ -1790,6 +1822,14 @@ void acpigen_get_rx_gpio(struct acpi_gpio *gpio)
acpigen_write_xor(LOCAL0_OP, 1, LOCAL0_OP);
}
+void acpigen_get_tx_gpio(struct acpi_gpio *gpio)
+{
+ acpigen_soc_get_tx_gpio(gpio->pins[0]);
+
+ if (gpio->polarity == ACPI_GPIO_ACTIVE_LOW)
+ acpigen_write_xor(LOCAL0_OP, 1, LOCAL0_OP);
+}
+
/* refer to ACPI 6.4.3.5.3 Word Address Space Descriptor section for details */
void acpigen_resource_word(u16 res_type, u16 gen_flags, u16 type_flags, u16 gran,
u16 range_min, u16 range_max, u16 translation, u16 length)
diff --git a/src/include/acpi/acpigen.h b/src/include/acpi/acpigen.h
index a99489de1f..dffde851f5 100644
--- a/src/include/acpi/acpigen.h
+++ b/src/include/acpi/acpigen.h
@@ -360,6 +360,7 @@ void acpigen_write_debug_integer(uint64_t val);
void acpigen_write_debug_op(uint8_t op);
void acpigen_write_if(void);
void acpigen_write_if_and(uint8_t arg1, uint8_t arg2);
+void acpigen_write_if_lequal_op_op(uint8_t op, uint8_t val);
void acpigen_write_if_lequal_op_int(uint8_t op, uint64_t val);
void acpigen_write_if_lequal_namestr_int(const char *namestr, uint64_t val);
void acpigen_write_else(void);
@@ -368,6 +369,7 @@ void acpigen_write_to_integer(uint8_t src, uint8_t dst);
void acpigen_write_byte_buffer(uint8_t *arr, size_t size);
void acpigen_write_return_byte_buffer(uint8_t *arr, size_t size);
void acpigen_write_return_singleton_buffer(uint8_t arg);
+void acpigen_write_return_op(uint8_t arg);
void acpigen_write_return_byte(uint8_t arg);
void acpigen_write_upc(enum acpi_upc_type type);
void acpigen_write_pld(const struct acpi_pld *pld);
@@ -439,6 +441,16 @@ void acpigen_write_indexfield(const char *idx, const char *data,
int get_cst_entries(acpi_cstate_t **);
/*
+ * Get element from package into specified destination op:
+ * <dest_op> = DeRefOf (<package_op>[<element])
+ *
+ * Example:
+ * acpigen_get_package_op_element(ARG0_OP, 0, LOCAL0_OP)
+ * Local0 = DeRefOf (Arg0[0])
+ */
+void acpigen_get_package_op_element(uint8_t package_op, unsigned int element, uint8_t dest_op);
+
+/*
* Soc-implemented functions for generating ACPI AML code for GPIO handling. All
* these functions are expected to use only Local5, Local6 and Local7
* variables. If the functions call into another ACPI method, then there is no
@@ -478,6 +490,14 @@ int acpigen_disable_tx_gpio(struct acpi_gpio *gpio);
*/
void acpigen_get_rx_gpio(struct acpi_gpio *gpio);
+/*
+ * Helper function for getting a TX GPIO value based on the GPIO polarity.
+ * The return value is stored in Local0 variable.
+ * This function ends up calling acpigen_soc_get_tx_gpio to make callbacks
+ * into SoC acpigen code
+ */
+void acpigen_get_tx_gpio(struct acpi_gpio *gpio);
+
/* refer to ACPI 6.4.3.5.3 Word Address Space Descriptor section for details */
void acpigen_resource_word(u16 res_type, u16 gen_flags, u16 type_flags, u16 gran,
u16 range_min, u16 range_max, u16 translation, u16 length);