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/* SPDX-License-Identifier: GPL-2.0-only */
#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 <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);
}
static void init(struct device *dev)
{
const struct soc_amd_common_config *cfg = soc_get_common_config();
struct resource *res;
uintptr_t bar;
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_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_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)
{
return "ACPD";
}
static void acp_fill_wov_method(const struct device *dev)
{
const struct soc_amd_common_config *cfg = soc_get_common_config();
const char *scope = acpi_device_path(dev);
if (!cfg->acp_config.dmic_present || !scope)
return;
/* For ACP DMIC hardware runtime detection on the platform, _WOV method is populated. */
acpigen_write_scope(scope); /* Scope */
acpigen_write_method("_WOV", 0);
acpigen_write_return_integer(1);
acpigen_write_method_end();
acpigen_write_scope_end();
}
static void acp_fill_ssdt(const struct device *dev)
{
acpi_device_write_pci_dev(dev);
acp_fill_wov_method(dev);
}
static struct device_operations acp_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = init,
.ops_pci = &pci_dev_ops_pci,
.scan_bus = scan_static_bus,
.acpi_name = acp_acpi_name,
.acpi_fill_ssdt = acp_fill_ssdt,
};
static const struct pci_driver acp_driver __pci_driver = {
.ops = &acp_ops,
.vendor = PCI_VENDOR_ID_AMD,
.device = PCI_DEVICE_ID_AMD_FAM17H_ACP,
};
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