diff options
Diffstat (limited to 'src/soc/amd/common/block/acp')
| -rw-r--r-- | src/soc/amd/common/block/acp/Kconfig | 4 | ||||
| -rw-r--r-- | src/soc/amd/common/block/acp/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/amd/common/block/acp/acp.c | 70 |
3 files changed, 75 insertions, 0 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/common/block/acp/acp.c b/src/soc/amd/common/block/acp/acp.c new file mode 100644 index 0000000000..3cb7c453c8 --- /dev/null +++ b/src/soc/amd/common/block/acp/acp.c @@ -0,0 +1,70 @@ +/* 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 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 = acpi_device_write_pci_dev, +}; + +static const struct pci_driver acp_driver __pci_driver = { + .ops = &acp_ops, + .vendor = PCI_VENDOR_ID_AMD, + .device = PCI_DEVICE_ID_AMD_FAM17H_ACP, +}; |