[coreboot-gerrit] Change in coreboot[master]: ec/lenovo/h8/ssdt: Add UWB ACPI interface

[Patrick Rudolph (Code Review)]

Patrick Rudolph has uploaded this change for review. ( https://review.coreboot.org/21003

Change subject: ec/lenovo/h8/ssdt: Add UWB ACPI interface
......................................................................

ec/lenovo/h8/ssdt: Add UWB ACPI interface

Add ACPI methods GUWB and SUWB for thinkpad_acpi.

Change-Id: I8f9a56e45c0d765b0e06b8d3600bd3575dd09491
Signed-off-by: Patrick Rudolph 
---
M src/ec/lenovo/h8/acpi/ec.asl
M src/ec/lenovo/h8/ssdt.c
2 files changed, 67 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/03/21003/1

diff --git a/src/ec/lenovo/h8/acpi/ec.asl b/src/ec/lenovo/h8/acpi/ec.asl
index 085c9e2..9643102 100644
--- a/src/ec/lenovo/h8/acpi/ec.asl
+++ b/src/ec/lenovo/h8/acpi/ec.asl
@@ -42,6 +42,9 @@
    	Offset (0x30),
    			    , 6,
    			ALMT, 1,	/* Audio Mute + LED */
+		Offset (0x31),
+				    , 2,
+				UWBE, 1,	/* Ultra Wideband enable */
    	Offset (0x3a),
    			AMUT, 1,	/* Audio Mute (internal use) */
    			    , 3,
diff --git a/src/ec/lenovo/h8/ssdt.c b/src/ec/lenovo/h8/ssdt.c
index 26c0d84..7ed134b 100644
--- a/src/ec/lenovo/h8/ssdt.c
+++ b/src/ec/lenovo/h8/ssdt.c
@@ -239,6 +239,69 @@
    acpigen_pop_len(); /* Method */
 }

+/* Generate ACPI methods GUWB and SUWB */
+static void h8_dsdt_uwb(struct device *dev)
+{
+	struct ec_lenovo_h8_config *conf = dev->chip_info;
+	if (!conf)
+		return;
+
+	const bool has_uwb = conf->has_uwb;
+
+	/* Method (GUWB, 0) */
+	acpigen_write_method("GUWB", 0);
+	/* Store(Zero, Local0) */
+	acpigen_write_store_ops(ZERO_OP, LOCAL0_OP);
+	if (has_uwb) {
+		/* UWB present */
+		/* Or(Local0, One, Local0) */
+		acpigen_write_or(LOCAL0_OP, ONE_OP, LOCAL0_OP);
+
+		/* If(LEqual(_SB.PCI0.LPCB.EC.UWBE, One)) */
+		acpigen_write_if();
+		acpigen_emit_byte(LEQUAL_OP);
+		acpigen_emit_namestring(h8_dsdt_scope(dev, "UWBE"));
+		acpigen_emit_byte(ONE_OP);
+
+		/* Or(Local0, 2, Local0) */
+		acpigen_emit_byte(OR_OP);
+		acpigen_emit_byte(LOCAL0_OP);
+		acpigen_write_integer(2);
+		acpigen_emit_byte(LOCAL0_OP);
+		acpigen_pop_len(); /* If */
+	}
+	/* Return(Local0) */
+	acpigen_emit_byte(RETURN_OP);
+	acpigen_emit_byte(LOCAL0_OP);
+	acpigen_pop_len(); /* Method */
+
+	/* Method (SUWB, 1) */
+	acpigen_write_method("SUWB", 1);
+	if (has_uwb) {
+		/* And(Arg0, 2, Local0) */
+		acpigen_emit_byte(AND_OP);
+		acpigen_emit_byte(ARG0_OP);
+		acpigen_write_integer(2);
+		acpigen_emit_byte(LOCAL0_OP);
+		/* If(Lequal(Local0, 2)) */
+		acpigen_write_if_lequal_op_int(LOCAL0_OP, 2);
+		/* Store(One, _SB.PCI0.LPCB.EC.UWBE) */
+		acpigen_write_store();
+		acpigen_emit_byte(ONE_OP);
+		acpigen_emit_namestring(h8_dsdt_scope(dev, "UWBE"));
+		acpigen_pop_len(); /* If */
+		/* Else */
+		acpigen_write_else();
+		/* Store(Zero, _SB.PCI0.LPCB.EC.UWBE) */
+		acpigen_write_store();
+		acpigen_emit_byte(ZERO_OP);
+		acpigen_emit_namestring(h8_dsdt_scope(dev, "UWBE"));
+		acpigen_pop_len(); /* Else */
+	}
+	acpigen_pop_len(); /* Method */
+}
+
+
 /*
  * Generates EC SSDT.
  */
@@ -256,6 +319,7 @@
    h8_dsdt_bluetooth(dev);
    h8_dsdt_wwan(dev);
    h8_dsdt_keyboard_backlight(dev);
+	h8_dsdt_uwb(dev);

acpigen_pop_len(); /* Scope HKEY */
 }