diff options
Diffstat (limited to 'src/drivers/usb/acpi/usb_acpi.c')
-rw-r--r-- | src/drivers/usb/acpi/usb_acpi.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/drivers/usb/acpi/usb_acpi.c b/src/drivers/usb/acpi/usb_acpi.c new file mode 100644 index 0000000000..65f1f82acd --- /dev/null +++ b/src/drivers/usb/acpi/usb_acpi.c @@ -0,0 +1,75 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2018 Google LLC + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <arch/acpi_device.h> +#include <arch/acpi_pld.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 usb_acpi_fill_ssdt_generator(struct device *dev) +{ + struct drivers_usb_acpi_config *config = dev->chip_info; + const char *path = acpi_device_path(dev); + + if (!dev->enabled || !path || !config) + return; + + /* Don't generate output for hubs, only ports */ + if (config->type == UPC_TYPE_HUB) + return; + + acpigen_write_scope(path); + if (config->desc) + acpigen_write_name_string("_DDN", config->desc); + acpigen_write_upc(config->type); + + if (config->use_custom_pld) { + /* Use board defined PLD */ + acpigen_write_pld(&config->custom_pld); + } else { + /* Fill PLD strucutre based on port type */ + struct acpi_pld pld; + acpi_pld_fill_usb(&pld, config->type); + acpigen_write_pld(&pld); + } + + acpigen_pop_len(); + + printk(BIOS_INFO, "%s: %s at %s\n", path, + config->desc ? : dev->chip_ops->name, dev_path(dev)); +} + +static struct device_operations usb_acpi_ops = { + .read_resources = DEVICE_NOOP, + .set_resources = DEVICE_NOOP, + .enable_resources = DEVICE_NOOP, + .scan_bus = &scan_usb_bus, + .acpi_fill_ssdt_generator = &usb_acpi_fill_ssdt_generator, +}; + +static void usb_acpi_enable(struct device *dev) +{ + dev->ops = &usb_acpi_ops; +} + +struct chip_operations drivers_usb_acpi_ops = { + CHIP_NAME("USB ACPI Device") + .enable_dev = &usb_acpi_enable +}; |