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>

10 files changed, 54 insertions, 46 deletions

diff --git a/src/soc/amd/common/block/acp/Kconfig b/src/soc/amd/common/block/acp/Kconfig
new file mode 100644
index 0000000000..ca733cd5de
--- /dev/null
+++ b/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.
diff --git a/src/soc/amd/common/block/acp/Makefile.inc b/src/soc/amd/common/block/acp/Makefile.inc
new file mode 100644
index 0000000000..cdff5bdb76
--- /dev/null
+++ b/src/soc/amd/common/block/acp/Makefile.inc
@@ -0,0 +1 @@
+ramstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_ACP) += acp.c
diff --git a/src/soc/amd/picasso/acp.c b/src/soc/amd/common/block/acp/acp.c
index d1ae21cec4..3cb7c453c8 100644
--- a/src/soc/amd/picasso/acp.c
+++ b/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)
diff --git a/src/soc/amd/common/block/include/amdblocks/acp.h b/src/soc/amd/common/block/include/amdblocks/acp.h
new file mode 100644
index 0000000000..f091c0540f
--- /dev/null
+++ b/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 */
diff --git a/src/soc/amd/common/block/include/amdblocks/chip.h b/src/soc/amd/common/block/include/amdblocks/chip.h
index b06ff85d11..c80a6746e0 100644
--- a/src/soc/amd/common/block/include/amdblocks/chip.h
+++ b/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;
 };
 
 /*
diff --git a/src/soc/amd/picasso/Kconfig b/src/soc/amd/picasso/Kconfig
index 0c494d9c1c..2f36f2e4ab 100644
--- a/src/soc/amd/picasso/Kconfig
+++ b/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
diff --git a/src/soc/amd/picasso/Makefile.inc b/src/soc/amd/picasso/Makefile.inc
index 081a65fac2..b5154a40f5 100644
--- a/src/soc/amd/picasso/Makefile.inc
+++ b/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
diff --git a/src/soc/amd/picasso/chip.h b/src/soc/amd/picasso/chip.h
index e84db3561e..d59a4c8207 100644
--- a/src/soc/amd/picasso/chip.h
+++ b/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;
diff --git a/src/soc/amd/picasso/fch.c b/src/soc/amd/picasso/fch.c
index b65bc6fbe1..a871ccf9cb 100644
--- a/src/soc/amd/picasso/fch.c
+++ b/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;
diff --git a/src/soc/amd/picasso/include/soc/acp.h b/src/soc/amd/picasso/include/soc/acp.h
deleted file mode 100644
index f812b32a98..0000000000
--- a/src/soc/amd/picasso/include/soc/acp.h
+++ /dev/null
@@ -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 */