mb/google/brya: Add firmware configuration probing for audio

For all of the audio devices in overridetree.cb add the probe matches
that will determine if the device should be enabled or not based on the
selected audio daughter board type.

AUDIO=MAX98357_ALC5682I_I2S: enable max98357, dmic1 and alc5682i
AUDIO=MAX98373_ALC5682_SNDW: enable max98373, dmic2 and alc5682

BUG=b:188696010
TEST=test different audio devices based on fw_config value:
> AUDIO=UNKNOWN
ectool cbi set 6 0x00000000 4 2
> AUDIO=MAX98357_ALC5682I_I2S
ectool cbi set 6 0x00000100 4 2
> AUDIO=MAX98373_ALC5682_SNDW
ectool cbi set 6 0x00000200 4 2

Change-Id: I6f159442516830f9d304d78c83f070e4fcff4a37
Signed-off-by: Sugnan Prabhu S <sugnan.prabhu.s@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54716
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

3 files changed, 110 insertions, 2 deletions

diff --git a/src/mainboard/google/brya/variants/brya0/Makefile.inc b/src/mainboard/google/brya/variants/brya0/Makefile.inc
new file mode 100644
index 0000000000..158c217c75
--- /dev/null
+++ b/src/mainboard/google/brya/variants/brya0/Makefile.inc
@@ -0,0 +1 @@
+ramstage-$(CONFIG_FW_CONFIG) += fw_config.c
diff --git a/src/mainboard/google/brya/variants/brya0/fw_config.c b/src/mainboard/google/brya/variants/brya0/fw_config.c
new file mode 100644
index 0000000000..66539afa37
--- /dev/null
+++ b/src/mainboard/google/brya/variants/brya0/fw_config.c
@@ -0,0 +1,82 @@
+/* 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 dmic_enable_pads[] = {
+	PAD_CFG_NF(GPP_S2, NONE, DEEP, NF2),	/* DMIC_CLK0_R */
+	PAD_CFG_NF(GPP_S3, NONE, DEEP, NF2),	/* DMIC_DATA0_R */
+	PAD_CFG_NF(GPP_S6, NONE, DEEP, NF2),	/* DMIC_CLK1_R */
+	PAD_CFG_NF(GPP_S7, NONE, DEEP, NF2),	/* DMIC_DATA1_R */
+};
+
+static const struct pad_config dmic_disable_pads[] = {
+	PAD_NC(GPP_S2, NONE),
+	PAD_NC(GPP_S3, NONE),
+	PAD_NC(GPP_S6, NONE),
+	PAD_NC(GPP_S7, NONE),
+};
+
+static const struct pad_config sndw_enable_pads[] = {
+	PAD_CFG_NF(GPP_S0, NONE, DEEP, NF1),	/* SDW_HP_CLK_R */
+	PAD_CFG_NF(GPP_S1, NONE, DEEP, NF1),	/* SDW_HP_DATA_R */
+	PAD_CFG_NF(GPP_S4, NONE, DEEP, NF1),	/* SDW_SPKR_CLK */
+	PAD_CFG_NF(GPP_S5, NONE, DEEP, NF1),	/* SDW_SPKR_DATA */
+};
+
+static const struct pad_config sndw_disable_pads[] = {
+	PAD_NC(GPP_S0, NONE),
+	PAD_NC(GPP_S1, NONE),
+	PAD_NC(GPP_S4, NONE),
+	PAD_NC(GPP_S5, NONE),
+};
+
+static const struct pad_config i2s_enable_pads[] = {
+	PAD_CFG_NF(GPP_R0, NONE, DEEP, NF2),	/* I2S_HP_SCLK_R */
+	PAD_CFG_NF(GPP_R1, NONE, DEEP, NF2),	/* I2S_HP_SFRM_R */
+	PAD_CFG_NF(GPP_R2, DN_20K, DEEP, NF2),	/* I2S_PCH_TX_HP_RX_STRAP */
+	PAD_CFG_NF(GPP_R3, NONE, DEEP, NF2),	/* I2S_PCH_RX_HP_TX */
+	PAD_CFG_NF(GPP_R4, NONE, DEEP, NF2),	/* I2S_SPKR_SCLK_R */
+	PAD_CFG_NF(GPP_R5, NONE, DEEP, NF2),	/* I2S_SPKR_SFRM_R */
+	PAD_CFG_NF(GPP_R6, NONE, DEEP, NF2),	/* I2S_PCH_TX_SPKR_RX_R */
+	PAD_CFG_NF(GPP_R7, NONE, DEEP, NF2),	/* I2S_PCH_RX_SPKR_TX */
+};
+
+static const struct pad_config i2s_disable_pads[] = {
+	PAD_NC(GPP_R0, NONE),
+	PAD_NC(GPP_R1, NONE),
+	PAD_NC(GPP_R2, NONE),
+	PAD_NC(GPP_R3, NONE),
+	PAD_NC(GPP_R4, NONE),
+	PAD_NC(GPP_R5, NONE),
+	PAD_NC(GPP_R6, NONE),
+	PAD_NC(GPP_R7, NONE),
+};
+
+static void fw_config_handle(void *unused)
+{
+	if (!fw_config_is_provisioned() || fw_config_probe(FW_CONFIG(AUDIO, AUDIO_UNKNOWN))) {
+		printk(BIOS_INFO, "Disable audio related GPIO pins.\n");
+		gpio_configure_pads(i2s_disable_pads, ARRAY_SIZE(i2s_disable_pads));
+		gpio_configure_pads(dmic_disable_pads, ARRAY_SIZE(dmic_disable_pads));
+		gpio_configure_pads(sndw_disable_pads, ARRAY_SIZE(sndw_disable_pads));
+		return;
+	}
+
+	if (fw_config_probe(FW_CONFIG(AUDIO, MAX98373_ALC5682_SNDW))) {
+		printk(BIOS_INFO, "Configure audio over SoundWire with MAX98373 ALC5682.\n");
+		gpio_configure_pads(dmic_enable_pads, ARRAY_SIZE(dmic_enable_pads));
+		gpio_configure_pads(sndw_enable_pads, ARRAY_SIZE(sndw_enable_pads));
+		gpio_configure_pads(i2s_disable_pads, ARRAY_SIZE(i2s_disable_pads));
+	}
+
+	if (fw_config_probe(FW_CONFIG(AUDIO, MAX98357_ALC5682I_I2S))) {
+		printk(BIOS_INFO, "Configure audio over I2S with MAX98357 ALC5682I.\n");
+		gpio_configure_pads(dmic_enable_pads, ARRAY_SIZE(dmic_enable_pads));
+		gpio_configure_pads(i2s_enable_pads, ARRAY_SIZE(i2s_enable_pads));
+		gpio_configure_pads(sndw_disable_pads, ARRAY_SIZE(sndw_disable_pads));
+	}
+}
+BOOT_STATE_INIT_ENTRY(BS_DEV_ENABLE, BS_ON_ENTRY, fw_config_handle, NULL);
diff --git a/src/mainboard/google/brya/variants/brya0/overridetree.cb b/src/mainboard/google/brya/variants/brya0/overridetree.cb
index 6354c0d582..2494fde46c 100644
--- a/src/mainboard/google/brya/variants/brya0/overridetree.cb
+++ b/src/mainboard/google/brya/variants/brya0/overridetree.cb
@@ -157,7 +157,9 @@ chip soc/intel/alderlake
 				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 on
+					probe AUDIO MAX98357_ALC5682I_I2S
+				end
 			end
 			chip drivers/intel/mipi_camera
 				register "acpi_hid" = ""OVTI8856""
@@ -401,7 +403,30 @@ chip soc/intel/alderlake
 				register "sdmode_gpio" =
 						"ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_A11)"
 				register "sdmode_delay" = "5"
-				device generic 0 on end
+				device generic 0 on
+					probe AUDIO MAX98357_ALC5682I_I2S
+				end
+			end
+
+			chip drivers/intel/soundwire
+				device generic 0 on
+					probe AUDIO MAX98373_ALC5682_SNDW
+					chip drivers/soundwire/alc5682
+						# SoundWire Link 0 ID 1
+						register "desc" = ""Headset Codec""
+						device generic 0.1 on end
+					end
+					chip drivers/soundwire/max98373
+						# SoundWire Link 2 ID 3
+						register "desc" = ""Left Speaker Amp""
+						device generic 2.3 on end
+					end
+					chip drivers/soundwire/max98373
+						# SoundWire Link 2 ID 7
+						register "desc" = ""Right Speaker Amp""
+						device generic 2.7 on end
+					end
+				end
 			end
 		end
 		device ref gspi1 on