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

[Frank Wu (Code Review)]

Frank Wu has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/58830 )

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

mb/google/zork/var/vilboz: 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 36 - 37 (SSFC bits 4 - 5)
for codec selection.

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

BUG=b:200103232, b:195042130
BRANCH=firmware-zork-13434.B
TEST=ALC5682-VD/ALC5682I-VS audio codec can work

Signed-off-by: Frank Wu 
Change-Id: Idf0119edf90a3372c8a34f708a7aac11c0188b76
---
M src/mainboard/google/zork/variants/baseboard/helpers.c
M src/mainboard/google/zork/variants/vilboz/overridetree.cb
M src/mainboard/google/zork/variants/vilboz/variant.c
3 files changed, 40 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/30/58830/1

diff --git a/src/mainboard/google/zork/variants/baseboard/helpers.c b/src/mainboard/google/zork/variants/baseboard/helpers.c
index d6c5e48..7057a48 100644
--- a/src/mainboard/google/zork/variants/baseboard/helpers.c
+++ b/src/mainboard/google/zork/variants/baseboard/helpers.c
@@ -55,6 +55,9 @@
    /* Audio AMP type */
    FW_CONFIG_MASK_AUDIO_AMP = 0x1,
    FW_CONFIG_SHIFT_AUDIO_AMP = 35,
+	/* Audio codec type */
+	FW_CONFIG_MASK_AUDIO_CODEC_SOURCE = 0x3,
+	FW_CONFIG_SHIFT_AUDIO_CODEC_SOURCE = 36,
 };

static int get_fw_config(uint64_t *val)
diff --git a/src/mainboard/google/zork/variants/vilboz/overridetree.cb b/src/mainboard/google/zork/variants/vilboz/overridetree.cb
index 1e83f6f..f9a9a74 100644
--- a/src/mainboard/google/zork/variants/vilboz/overridetree.cb
+++ b/src/mainboard/google/zork/variants/vilboz/overridetree.cb
@@ -5,6 +5,10 @@
    	option AUDIO_AMP_I2C_MODE	0
    	option AUDIO_AMP_AUTO_MODE	1
    end
+	field AUDIO_CODEC_SOURCE 36 37
+		option AUDIO_CODEC_ALC5682 0
+		option AUDIO_CODEC_ALC5682I_VS 1
+	end
 end

chip soc/amd/picasso
diff --git a/src/mainboard/google/zork/variants/vilboz/variant.c b/src/mainboard/google/zork/variants/vilboz/variant.c
index 43ca0e5..47b60ac 100644
--- a/src/mainboard/google/zork/variants/vilboz/variant.c
+++ b/src/mainboard/google/zork/variants/vilboz/variant.c
@@ -5,6 +5,10 @@
 #include <fw_config.h>
 #include <sar.h>
 #include "chip.h"
+#include <drivers/i2c/generic/chip.h>
+#include <device/device.h>
+#include <device/path.h>
+#include <console/console.h>

static const fsp_ddi_descriptor hdmi_ddi_descriptors[] = {
    { // DDI0, DP0, eDP
@@ -35,6 +39,33 @@
    *ddi_num = ARRAY_SIZE(hdmi_ddi_descriptors);
 }

+extern struct chip_operations drivers_i2c_generic_ops;
+
+static void audio_codec_update(void)
+{
+	const struct device_path codec_path[] = {
+		{.type = DEVICE_PATH_PCI, .pci.devfn = LPC_DEVFN},
+		{.type = DEVICE_PATH_PNP, .pnp.port = 0xc09, .pnp.device = 0},
+		{.type = DEVICE_PATH_GENERIC, .generic.id = 0},
+		{.type = DEVICE_PATH_I2C, .i2c.device = 0x1a, .i2c.mode_10bit = I2C_MODE_7_BIT }
+	};
+
+	const struct device *codec =
+		find_dev_nested_path(pci_root_bus(), codec_path, ARRAY_SIZE(codec_path));
+	struct drivers_i2c_generic_config *config;
+
+	if (!codec || (codec->chip_ops != &drivers_i2c_generic_ops) || !codec->chip_info)
+		return;
+
+	config = codec->chip_info;
+
+	if (fw_config_probe(FW_CONFIG(AUDIO_CODEC_SOURCE, AUDIO_CODEC_ALC5682)))
+		config->hid = "10EC5682";
+	else if (fw_config_probe(FW_CONFIG(AUDIO_CODEC_SOURCE, AUDIO_CODEC_ALC5682I_VS)))
+		config->hid = "RTL5682";
+	printk(BIOS_INFO, "Configure audio codec, config->hid %s\n", config->hid);
+}
+
 void variant_devtree_update(void)
 {
    struct soc_amd_picasso_config *soc_cfg;
@@ -57,6 +88,8 @@
    	soc_cfg->edp_tuningset.deemph_6db4 = 0x00;
    	soc_cfg->edp_tuningset.boostadj = 0x80;
    }
+
+	audio_codec_update();
 }

/*