mb/intel/adlrvp: Enable I2S audio codecs on ADL-M RVP

- Add configurability using FW_CONFIG field in CBI, to
enable/disable I2S codec support for MAX98373 codecs
- AUDIO=ADL_MAX98373_ALC5682I_I2S: enable max98373 codec
using expansion board

Bug=None
Test=With CBI FW_CONFIG set to 0x100, check I2S audio output
on expansion card

Signed-off-by: Anil Kumar <anil.kumar.k@intel.com>
Change-Id: If2649647e58c5f30e2b539d534adf2a4e68f4fda
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52221
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

4 files changed, 88 insertions, 1 deletions

diff --git a/src/mainboard/intel/adlrvp/Kconfig b/src/mainboard/intel/adlrvp/Kconfig
index 8ed37ab53a60..8510c3831feb 100644
--- a/src/mainboard/intel/adlrvp/Kconfig
+++ b/src/mainboard/intel/adlrvp/Kconfig
@@ -19,6 +19,9 @@ config BOARD_SPECIFIC_OPTIONS
 	select HAVE_SPD_IN_CBFS
 	select DRIVERS_SOUNDWIRE_ALC711
 	select SOC_INTEL_CSE_LITE_SKU
+	select DRIVERS_I2C_MAX98373
+	select FW_CONFIG if BOARD_INTEL_ADLRVP_M_EXT_EC
+	select FW_CONFIG_SOURCE_CHROMEEC_CBI if BOARD_INTEL_ADLRVP_M_EXT_EC
 
 config CHROMEOS
 	select GBB_FLAG_FORCE_DEV_SWITCH_ON
diff --git a/src/mainboard/intel/adlrvp/Makefile.inc b/src/mainboard/intel/adlrvp/Makefile.inc
index 609bed5e5e85..ca9ba1445eb0 100644
--- a/src/mainboard/intel/adlrvp/Makefile.inc
+++ b/src/mainboard/intel/adlrvp/Makefile.inc
@@ -23,6 +23,7 @@ ramstage-$(CONFIG_CHROMEOS) += chromeos.c
 ramstage-y += ec.c
 ramstage-y += mainboard.c
 ramstage-y += board_id.c
+ramstage-$(CONFIG_FW_CONFIG) += fw_config.c
 
 CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
 
diff --git a/src/mainboard/intel/adlrvp/devicetree_m.cb b/src/mainboard/intel/adlrvp/devicetree_m.cb
index 34aee729ce1a..b29533662edb 100644
--- a/src/mainboard/intel/adlrvp/devicetree_m.cb
+++ b/src/mainboard/intel/adlrvp/devicetree_m.cb
@@ -1,3 +1,9 @@
+fw_config
+	field AUDIO 8 10
+		option NONE 0
+		option ADL_MAX98373_ALC5682I_I2S 1
+	end
+end
 chip soc/intel/alderlake
 
 	device cpu_cluster 0 on
@@ -211,7 +217,43 @@ chip soc/intel/alderlake
 				device generic 0 on end
 			end
 		end
-		device ref i2c0 on end
+		device ref i2c0 on
+			chip drivers/i2c/generic
+				register "hid" = ""10EC5682""
+				register "name" = ""RT58""
+				register "desc" = ""Headset Codec""
+				register "irq" = "ACPI_IRQ_EDGE_HIGH(GPP_H3_IRQ)"
+				# Set the jd_src to RT5668_JD1 for jack detection
+				register "property_count" = "1"
+				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
+					probe AUDIO ADL_MAX98373_ALC5682I_I2S
+				end
+			end
+			chip drivers/i2c/max98373
+				register "vmon_slot_no" = "0"
+				register "imon_slot_no" = "1"
+				register "uid" = "0"
+				register "desc" = ""Right Speaker Amp""
+				register "name" = ""MAXR""
+				device i2c 31 on
+					probe AUDIO ADL_MAX98373_ALC5682I_I2S
+				end
+			end
+			chip drivers/i2c/max98373
+				register "vmon_slot_no" = "2"
+				register "imon_slot_no" = "3"
+				register "uid" = "1"
+				register "desc" = ""Left Speaker Amp""
+				register "name" = ""MAXL""
+				device i2c 32 on
+					probe AUDIO ADL_MAX98373_ALC5682I_I2S
+				end
+			end
+		end
+
 		device ref i2c1 on
 			chip drivers/intel/mipi_camera
 				register "acpi_hid" = ""OVTI5675""
diff --git a/src/mainboard/intel/adlrvp/fw_config.c b/src/mainboard/intel/adlrvp/fw_config.c
new file mode 100644
index 000000000000..8589bd8bdc2b
--- /dev/null
+++ b/src/mainboard/intel/adlrvp/fw_config.c
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <bootstate.h>
+#include <console/console.h>
+#include <fw_config.h>
+#include <gpio.h>
+
+static const struct pad_config i2s_enable_pads[] = {
+	/* Audio Codec INT N */
+	PAD_CFG_GPI_APIC(GPP_H3, NONE, PLTRST, EDGE_BOTH, INVERT),
+
+	/* I2S0_SCLK */
+	PAD_CFG_NF(GPP_R0, NONE, DEEP, NF2),
+	/* I2S0_SFRM */
+	PAD_CFG_NF(GPP_R1, NONE, DEEP, NF2),
+	/* I2S0_TXD */
+	PAD_CFG_NF(GPP_R2, NONE, DEEP, NF2),
+	/* I2S0_RXD */
+	PAD_CFG_NF(GPP_R3, NONE, DEEP, NF2),
+
+	/* I2S2_SCLK */
+	PAD_CFG_NF(GPP_R4, NONE, DEEP, NF2),
+	/* I2S2_SFRM */
+	PAD_CFG_NF(GPP_R5, NONE, DEEP, NF2),
+	/* I2S2_TXD */
+	PAD_CFG_NF(GPP_R6, NONE, DEEP, NF2),
+	/* I2S2_RXD */
+	PAD_CFG_NF(GPP_R7, NONE, DEEP, NF2),
+
+	/* I2S_MCLK1_OUT */
+	PAD_CFG_NF(GPP_D19, NONE, DEEP, NF1),
+};
+
+static void fw_config_handle(void *unused)
+{
+	if (fw_config_probe(FW_CONFIG(AUDIO, ADL_MAX98373_ALC5682I_I2S))) {
+		printk(BIOS_INFO, "Configure GPIOs for I2S audio.\n");
+		gpio_configure_pads(i2s_enable_pads, ARRAY_SIZE(i2s_enable_pads));
+	}
+}
+BOOT_STATE_INIT_ENTRY(BS_DEV_ENABLE, BS_ON_ENTRY, fw_config_handle, NULL);