| /* 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, |
| }; |