From ea78675b963e2e9991b4f787a29421799c13a49e Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Tue, 22 Sep 2020 12:45:22 -0600
Subject: [PATCH] x86: apl: Generate ACPI table for LPC

Add an ACPI table for the LPC on Apollo Lake.

Signed-off-by: Simon Glass <sjg@chromium.org>
---
 arch/x86/cpu/apollolake/lpc.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/x86/cpu/apollolake/lpc.c b/arch/x86/cpu/apollolake/lpc.c
index b81a458f2e..a29832c879 100644
--- a/arch/x86/cpu/apollolake/lpc.c
+++ b/arch/x86/cpu/apollolake/lpc.c
@@ -9,10 +9,14 @@
 #include <dm.h>
 #include <log.h>
 #include <spl.h>
+#include <acpi/acpi_table.h>
+#include <asm/cpu_common.h>
+#include <asm/intel_acpi.h>
 #include <asm/lpc_common.h>
 #include <asm/pci.h>
 #include <asm/arch/iomap.h>
 #include <asm/arch/lpc.h>
+#include <dm/acpi.h>
 #include <linux/log2.h>
 
 void lpc_enable_fixed_io_ranges(uint io_enables)
@@ -110,6 +114,19 @@ void lpc_io_setup_comm_a_b(void)
 	lpc_enable_fixed_io_ranges(com_enable);
 }
 
+static int apl_acpi_lpc_get_name(const struct udevice *dev, char *out_name)
+{
+	return acpi_copy_name(out_name, "LPCB");
+}
+
+struct acpi_ops apl_lpc_acpi_ops = {
+	.get_name	= apl_acpi_lpc_get_name,
+#ifdef CONFIG_GENERATE_ACPI_TABLE
+	.write_tables	= intel_southbridge_write_acpi_tables,
+#endif
+	.inject_dsdt	= southbridge_inject_dsdt,
+};
+
 static const struct udevice_id apl_lpc_ids[] = {
 	{ .compatible = "intel,apl-lpc" },
 	{ }
@@ -120,4 +137,5 @@ U_BOOT_DRIVER(apl_lpc_drv) = {
 	.name		= "intel_apl_lpc",
 	.id		= UCLASS_LPC,
 	.of_match	= apl_lpc_ids,
+	ACPI_OPS_PTR(&apl_lpc_acpi_ops)
 };