Change in coreboot[master]: mb/google/volteer/var/copano: Add fw_config probe for ALC5682-VD & VS

[Frank Chu (Code Review)]

Frank Chu has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/61674 )

Change subject: mb/google/volteer/var/copano: Add fw_config probe for ALC5682-VD & VS
......................................................................

mb/google/volteer/var/copano: Add fw_config probe for ALC5682-VD & VS

ALC5682-VD/ALC5682I-VS load different kernel driver by different hid
name. Update hid name depending on the AUDIO_CODEC_SOURCE field of
fw_config. Define FW_CONFIG bits 41 - 43 (SSFC bits 9 - 11)
for codec selection.

ALC5682-VD: _HID = "10EC5682"
ALC5682I-VS: _HID = "RTL5682"

BUG=b:218245715
BRANCH=volteer
TEST=ALC5682-VD/ALC5682I-VS audio codec can work

Signed-off-by: FrankChu 
Change-Id: I081dcf5451c82c03592f954ee25267b31ad81753
---
M src/mainboard/google/volteer/variants/copano/Makefile.inc
M src/mainboard/google/volteer/variants/copano/overridetree.cb
A src/mainboard/google/volteer/variants/copano/variant.c
3 files changed, 33 insertions(+), 3 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/74/61674/1

diff --git a/src/mainboard/google/volteer/variants/copano/Makefile.inc b/src/mainboard/google/volteer/variants/copano/Makefile.inc
index 343c7db..2af91aa 100644
--- a/src/mainboard/google/volteer/variants/copano/Makefile.inc
+++ b/src/mainboard/google/volteer/variants/copano/Makefile.inc
@@ -5,3 +5,5 @@
 bootblock-y += gpio.c

ramstage-y += gpio.c
+
+ramstage-y += variant.c
diff --git a/src/mainboard/google/volteer/variants/copano/overridetree.cb b/src/mainboard/google/volteer/variants/copano/overridetree.cb
index 7ffa7ab..150db08 100644
--- a/src/mainboard/google/volteer/variants/copano/overridetree.cb
+++ b/src/mainboard/google/volteer/variants/copano/overridetree.cb
@@ -1,3 +1,10 @@
+fw_config
+	field AUDIO_CODEC_SOURCE 41 43
+		option AUDIO_CODEC_UNPROVISIONED 0
+		option AUDIO_CODEC_ALC5682 1
+		option AUDIO_CODEC_ALC5682I_VS 2
+	end
+end
 chip soc/intel/tigerlake
    # BitMask where bits [3:0] are Controller 0 Channel [3:0] and
    # bits [7:4] are Controller 1 Channel [3:0].
@@ -117,7 +124,7 @@

device ref i2c0 on
    		chip drivers/i2c/generic
-				register "hid" = ""10EC5682""
+				# register "hid" is set in variant.c because of FW_CONFIG
    			register "name" = ""RT58""
    			register "desc" = ""Headset Codec""
    			register "irq_gpio" = "ACPI_GPIO_IRQ_EDGE_BOTH(GPP_R5)"
@@ -126,8 +133,7 @@
    			register "property_list[0].type" = "ACPI_DP_TYPE_INTEGER"
    			register "property_list[0].name" = ""realtek,jd-src""
    			register "property_list[0].integer" = "1"
-				device i2c 1a on
-				end
+				device i2c 1a alias audio_codec on end
    		end
    		chip drivers/i2c/max98373
    			register "vmon_slot_no" = "0"
diff --git a/src/mainboard/google/volteer/variants/copano/variant.c b/src/mainboard/google/volteer/variants/copano/variant.c
new file mode 100644
index 0000000..3effcdf
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/copano/variant.c
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/variants.h>
+#include <fw_config.h>
+#include <drivers/i2c/hid/chip.h>
+#include <device/device.h>
+
+static void audio_codec_update(void)
+{
+	struct device *codec = DEV_PTR(audio_codec);
+	struct drivers_i2c_generic_config *config;
+
+	config = codec->chip_info;
+	if (fw_config_probe(FW_CONFIG(AUDIO_CODEC_SOURCE, AUDIO_CODEC_ALC5682)))
+		config->hid = "10EC5682";
+	else
+		config->hid = "RTL5682";
+}
+void variant_devtree_update(void)
+{
+	audio_codec_update();
+}