| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* This file is part of the coreboot project. */ |
| |
| #include <arch/acpi_device.h> |
| #include <arch/acpigen.h> |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <device/path.h> |
| #include <stdint.h> |
| #include <string.h> |
| #include "chip.h" |
| |
| static void generic_dev_fill_ssdt_generator(struct device *dev) |
| { |
| struct acpi_dp *dsd; |
| struct drivers_generic_generic_config *config = dev->chip_info; |
| |
| if (!dev->enabled || !config) |
| return; |
| |
| if (!config->hid) { |
| printk(BIOS_ERR, "%s: ERROR: _HID required\n", dev_path(dev)); |
| return; |
| } |
| |
| acpigen_write_scope(acpi_device_scope(dev)); |
| acpigen_write_device(acpi_device_name(dev)); |
| acpigen_write_name_string("_HID", config->hid); |
| if (config->cid) |
| acpigen_write_name_string("_CID", config->cid); |
| acpigen_write_name_integer("_UID", config->uid); |
| acpigen_write_name_string("_DDN", config->desc); |
| acpigen_write_STA(acpi_device_status(dev)); |
| |
| dsd = acpi_dp_new_table("_DSD"); |
| acpi_dp_add_property_list(dsd, config->property_list, |
| config->property_count); |
| acpi_dp_write(dsd); |
| |
| acpigen_pop_len(); /* Device */ |
| acpigen_pop_len(); /* Scope */ |
| |
| printk(BIOS_INFO, "%s: %s at %s\n", acpi_device_path(dev), |
| config->desc ? : dev->chip_ops->name, dev_path(dev)); |
| } |
| |
| static char *generic_autogen_name(struct drivers_generic_generic_config *config) |
| { |
| char *name = &config->autogen_name[0]; |
| static unsigned int id; |
| |
| if (name[0] != '\0') |
| return name; |
| |
| snprintf(name, sizeof(name), "G%03.3X", id++); |
| name[4] = '\0'; |
| return name; |
| } |
| |
| static const char *generic_dev_acpi_name(const struct device *dev) |
| { |
| struct drivers_generic_generic_config *config = dev->chip_info; |
| |
| if (config->name) |
| return config->name; |
| |
| return generic_autogen_name(config); |
| } |
| |
| static struct device_operations generic_dev_ops = { |
| .read_resources = noop_read_resources, |
| .set_resources = noop_set_resources, |
| .acpi_name = generic_dev_acpi_name, |
| .acpi_fill_ssdt = generic_dev_fill_ssdt_generator, |
| }; |
| |
| static void generic_dev_enable(struct device *dev) |
| { |
| dev->ops = &generic_dev_ops; |
| } |
| |
| struct chip_operations drivers_generic_generic_ops = { |
| CHIP_NAME("Generic Device") |
| .enable_dev = generic_dev_enable |
| }; |