soc/amd/common/acp: Move Audio Co-processor driver to common

Audio Co-processor driver is similar for both Picasso and Cezanne SoCs.
Hence move it to the common location.

BUG=None.
TEST=Builds Dalboz, Trembyle, Vilboz, Mandolin and Bilby mainboards.

Change-Id: I91470ff68d1c183df9a2927d71b03371b535186a
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52643
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>

src/mainboard/amd/bilby/devicetree.cb

@@ -1,7 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/amd/picasso
-	register "acp_pin_cfg" = "I2S_PINS_MAX_HDA"
+	# ACP Configuration
+	register "common_config.acp_config.acp_pin_cfg" = "I2S_PINS_MAX_HDA"
 
 	# Set FADT Configuration
 	register "common_config.fadt_boot_arch" = "ACPI_FADT_LEGACY_DEVICES | ACPI_FADT_8042"

src/mainboard/amd/mandolin/variants/cereme/devicetree.cb

@@ -1,7 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/amd/picasso
-	register "acp_pin_cfg" = "I2S_PINS_MAX_HDA"
+	# ACP Configuration
+	register "common_config.acp_config.acp_pin_cfg" = "I2S_PINS_MAX_HDA"
 
 	# Set FADT Configuration
 	register "common_config.fadt_boot_arch" = "ACPI_FADT_LEGACY_DEVICES | ACPI_FADT_8042"

src/mainboard/amd/mandolin/variants/mandolin/devicetree.cb

@@ -1,7 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/amd/picasso
-	register "acp_pin_cfg" = "I2S_PINS_MAX_HDA"
+	# ACP Configuration
+	register "common_config.acp_config.acp_pin_cfg" = "I2S_PINS_MAX_HDA"
 
 	# Set FADT Configuration
 	register "common_config.fadt_boot_arch" = "ACPI_FADT_LEGACY_DEVICES | ACPI_FADT_8042"

src/mainboard/google/zork/variants/baseboard/devicetree_dalboz.cb

@@ -13,9 +13,12 @@ chip soc/amd/picasso
 	# See table 5-34 ACPI 6.3 spec
 	register "common_config.fadt_flags" = "ACPI_FADT_SLEEP_BUTTON | ACPI_FADT_SEALED_CASE"
 
-	register "acp_pin_cfg" = "I2S_PINS_I2S_TDM"
-	register "acp_i2s_wake_enable" = "0"
-	register "acp_pme_enable" = "0"
+	# ACP Configuration
+	register "common_config.acp_config" = "{
+		.acp_pin_cfg = I2S_PINS_I2S_TDM,
+		.acp_i2s_wake_enable = 0,
+		.acp_pme_enable = 0,
+	}"
 
 	# Start : OPN Performance Configuration
 	# (Configuratin that is common for all variants)

src/mainboard/google/zork/variants/baseboard/devicetree_trembyle.cb

@@ -6,9 +6,12 @@ chip soc/amd/picasso
 	# See table 5-34 ACPI 6.3 spec
 	register "common_config.fadt_flags" = "ACPI_FADT_SLEEP_BUTTON | ACPI_FADT_SEALED_CASE"
 
-	register "acp_pin_cfg" = "I2S_PINS_I2S_TDM"
-	register "acp_i2s_wake_enable" = "0"
-	register "acp_pme_enable" = "0"
+	# ACP Configuration
+	register "common_config.acp_config" = "{
+		.acp_pin_cfg = I2S_PINS_I2S_TDM,
+		.acp_i2s_wake_enable = 0,
+		.acp_pme_enable = 0,
+	}"
 
 	# Start : OPN Performance Configuration
 	# (Configuratin that is common for all variants)

src/mainboard/google/zork/variants/baseboard/ramstage_common.c

@@ -70,8 +70,8 @@ static void update_hp_int_odl(void)
 	 * need to be set to trigger I2S_WAKE event for headphone jack.
 	 */
 	soc_cfg = config_of_soc();
-	soc_cfg->acp_i2s_wake_enable = 1;
-	soc_cfg->acp_pme_enable = 1;
+	soc_cfg->common_config.acp_config.acp_i2s_wake_enable = 1;
+	soc_cfg->common_config.acp_config.acp_pme_enable = 1;
 }
 
 static void update_dmic_gpio(void)

src/mainboard/google/zork/variants/vilboz/variant.c

@@ -45,7 +45,7 @@ void variant_devtree_update(void)
 
 	/* b:/174121847 Use external OSC to mitigate noise for WWAN sku. */
 	if (variant_has_wwan()) {
-		soc_cfg->acp_i2s_use_external_48mhz_osc = 1;
+		soc_cfg->common_config.acp_config.acp_i2s_use_external_48mhz_osc = 1;
 
 		/* eDP phy tuning settings */
 		soc_cfg->edp_phy_override = ENABLE_EDP_TUNINGSET;

src/soc/amd/common/block/acp/Kconfig

@@ -0,0 +1,4 @@
+config SOC_AMD_COMMON_BLOCK_ACP
+	bool
+	help
+	  Select this option to perform Audio Co-Processor(ACP) configuration.

src/soc/amd/common/block/acp/Makefile.inc

@@ -0,0 +1 @@
+ramstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_ACP) += acp.c

src/soc/amd/common/block/acp/acp.c

@@ -2,20 +2,25 @@
 
 #include <acpi/acpi_device.h>
 #include <acpi/acpigen.h>
+#include <amdblocks/acp.h>
+#include <amdblocks/acpimmio.h>
+#include <amdblocks/chip.h>
 #include <console/console.h>
 #include <device/device.h>
 #include <device/mmio.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
 #include <device/pci_ops.h>
-#include "chip.h"
-#include <soc/acp.h>
-#include <soc/acpi.h>
-#include <soc/pci_devs.h>
-#include <soc/southbridge.h>
-#include <amdblocks/acpimmio.h>
 #include <commonlib/helpers.h>
 
+/* ACP registers and associated fields */
+#define ACP_I2S_PIN_CONFIG	0x1400	/* HDA, Soundwire, I2S */
+#define  PIN_CONFIG_MASK	(7 << 0)
+#define ACP_I2S_WAKE_EN		0x1414
+#define  WAKE_EN_MASK		(1 << 0)
+#define ACP_PME_EN		0x1418
+#define  PME_EN_MASK		(1 << 0)
+
 static void acp_update32(uintptr_t bar, uint32_t reg, uint32_t clear, uint32_t set)
 {
 	clrsetbits32((void *)(bar + reg), clear, set);
@@ -23,25 +28,23 @@ static void acp_update32(uintptr_t bar, uint32_t reg, uint32_t clear, uint32_t s
 
 static void init(struct device *dev)
 {
-	const struct soc_amd_picasso_config *cfg;
+	const struct soc_amd_common_config *cfg = soc_get_common_config();
 	struct resource *res;
 	uintptr_t bar;
 
-	/* Set the proper I2S_PIN_CONFIG state */
-	cfg = config_of_soc();
-
 	res = dev->resource_list;
 	if (!res || !res->base) {
 		printk(BIOS_ERR, "Error, unable to configure pin in %s\n", __func__);
 		return;
 	}
 
+	/* Set the proper I2S_PIN_CONFIG state */
 	bar = (uintptr_t)res->base;
-	acp_update32(bar, ACP_I2S_PIN_CONFIG, PIN_CONFIG_MASK, cfg->acp_pin_cfg);
+	acp_update32(bar, ACP_I2S_PIN_CONFIG, PIN_CONFIG_MASK, cfg->acp_config.acp_pin_cfg);
 
 	/* Enable ACP_PME_EN and ACP_I2S_WAKE_EN for I2S_WAKE event */
-	acp_update32(bar, ACP_I2S_WAKE_EN, WAKE_EN_MASK, !!cfg->acp_i2s_wake_enable);
-	acp_update32(bar, ACP_PME_EN, PME_EN_MASK, !!cfg->acp_pme_enable);
+	acp_update32(bar, ACP_I2S_WAKE_EN, WAKE_EN_MASK, !!cfg->acp_config.acp_i2s_wake_enable);
+	acp_update32(bar, ACP_PME_EN, PME_EN_MASK, !!cfg->acp_config.acp_pme_enable);
 }
 
 static const char *acp_acpi_name(const struct device *dev)

src/soc/amd/common/block/include/amdblocks/acp.h

@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef AMD_COMMON_ACP_H
+#define AMD_COMMON_ACP_H
+
+struct acp_config {
+	enum {
+		I2S_PINS_MAX_HDA = 0,	/* HDA w/reset  3xSDI, SW w/Data0 */
+		I2S_PINS_MAX_MHDA = 1,	/* HDA no reset 3xSDI, SW w/Data0-1 */
+		I2S_PINS_MIN_HDA = 2,	/* HDA w/reset  1xSDI, SW w/Data0-2 */
+		I2S_PINS_MIN_MHDA = 3,	/* HDA no reset 1xSDI, SW w/Data0-3 */
+		I2S_PINS_I2S_TDM = 4,
+		I2S_PINS_UNCONF = 7,	/* All pads will be input mode */
+	} acp_pin_cfg;
+
+	/* Enable ACP I2S wake feature (0 = disable, 1 = enable) */
+	u8 acp_i2s_wake_enable;
+	/* Enable ACP PME (0 = disable, 1 = enable) */
+	u8 acp_pme_enable;
+
+	/* If using an external 48MHz OSC for codec, will disable internal X48M_OSC */
+	bool acp_i2s_use_external_48mhz_osc;
+};
+
+#endif /* AMD_COMMON_ACP_H */

src/soc/amd/common/block/include/amdblocks/chip.h

@@ -5,6 +5,7 @@
 
 #include <amdblocks/espi.h>
 #include <amdblocks/spi.h>
+#include <amdblocks/acp.h>
 #include <stdint.h>
 
 struct soc_amd_common_config {
@@ -36,6 +37,9 @@ struct soc_amd_common_config {
 		/* See MP_IRQ_* from mpspec.h */
 		uint8_t flags;
 	} irq_override[16];
+
+	/* Audio Co-processor (ACP) configuration */
+	struct acp_config acp_config;
 };
 
 /*

src/soc/amd/picasso/Kconfig

@@ -25,6 +25,7 @@ config CPU_SPECIFIC_OPTIONS
 	select HAVE_ACPI_TABLES
 	select HAVE_EM100_SUPPORT
 	select SOC_AMD_COMMON
+	select SOC_AMD_COMMON_BLOCK_ACP
 	select SOC_AMD_COMMON_BLOCK_ACPI
 	select SOC_AMD_COMMON_BLOCK_ACPIMMIO
 	select SOC_AMD_COMMON_BLOCK_ACPI_GPIO

src/soc/amd/picasso/Makefile.inc

@@ -43,7 +43,6 @@ ramstage-$(CONFIG_HAVE_ACPI_TABLES) += agesa_acpi.c
 ramstage-y += gpio.c
 ramstage-y += fch.c
 ramstage-y += reset.c
-ramstage-y += acp.c
 ramstage-y += sata.c
 ramstage-y += uart.c
 ramstage-y += soc_util.c

src/soc/amd/picasso/chip.h

@@ -105,19 +105,6 @@ struct soc_amd_picasso_config {
 	 */
 	u8 i2c_scl_reset;
 	struct dw_i2c_bus_config i2c[I2C_CTRLR_COUNT];
-	enum {
-		I2S_PINS_MAX_HDA = 0,	/* HDA w/reset  3xSDI, SW w/Data0 */
-		I2S_PINS_MAX_MHDA = 1,	/* HDA no reset 3xSDI, SW w/Data0-1 */
-		I2S_PINS_MIN_HDA = 2,	/* HDA w/reset  1xSDI, SW w/Data0-2 */
-		I2S_PINS_MIN_MHDA = 3,	/* HDA no reset 1xSDI, SW w/Data0-3 */
-		I2S_PINS_I2S_TDM = 4,
-		I2S_PINS_UNCONF = 7,	/* All pads will be input mode */
-	} acp_pin_cfg;
-
-	/* Enable ACP I2S wake feature (0 = disable, 1 = enable) */
-	u8 acp_i2s_wake_enable;
-	/* Enable ACP PME (0 = disable, 1 = enable) */
-	u8 acp_pme_enable;
 
 	/* System config index */
 	uint8_t system_config;
@@ -270,8 +257,6 @@ struct soc_amd_picasso_config {
 
 	/* The array index is the general purpose PCIe clock output number. */
 	enum gpp_clk_req_setting gpp_clk_config[GPP_CLK_OUTPUT_COUNT];
-	/* If using an external 48MHz OSC for codec, will disable internal X48M_OSC */
-	bool acp_i2s_use_external_48mhz_osc;
 
 	/* eDP phy tuning settings */
 	uint16_t edp_phy_override;

src/soc/amd/picasso/fch.c

@@ -90,12 +90,12 @@ const struct irq_idx_name *sb_get_apic_reg_association(size_t *size)
 void sb_clk_output_48Mhz(void)
 {
 	u32 ctrl;
-	const struct soc_amd_picasso_config *cfg;
-	cfg = config_of_soc();
+	const struct soc_amd_common_config *cfg = soc_get_common_config();
 
 	ctrl = misc_read32(MISC_CLK_CNTL1);
 	/* If used external clock source for I2S, disable the internal clock output */
-	if (cfg->acp_i2s_use_external_48mhz_osc && cfg->acp_pin_cfg == I2S_PINS_I2S_TDM)
+	if (cfg->acp_config.acp_i2s_use_external_48mhz_osc &&
+			cfg->acp_config.acp_pin_cfg == I2S_PINS_I2S_TDM)
 		ctrl &= ~BP_X48M0_OUTPUT_EN;
 	else
 		ctrl |= BP_X48M0_OUTPUT_EN;

src/soc/amd/picasso/include/soc/acp.h

@@ -1,14 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-#ifndef AMD_PICASSO_ACP_H
-#define AMD_PICASSO_ACP_H
-
-/* Bus A D0F5 - Audio Processor */
-#define ACP_I2S_PIN_CONFIG	0x1400	/* HDA, Soundwire, I2S */
-#define  PIN_CONFIG_MASK	(7 << 0)
-#define ACP_I2S_WAKE_EN		0x1414
-#define  WAKE_EN_MASK		(1 << 0)
-#define ACP_PME_EN		0x1418
-#define  PME_EN_MASK		(1 << 0)
-
-#endif /* AMD_PICASSO_ACP_H */