diff options
| -rw-r--r-- | src/drivers/usb/acpi/Kconfig | 4 | ||||
| -rw-r--r-- | src/drivers/usb/acpi/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/drivers/usb/acpi/chip.h | 54 | ||||
| -rw-r--r-- | src/drivers/usb/acpi/usb_acpi.c | 75 |
4 files changed, 134 insertions, 0 deletions
diff --git a/src/drivers/usb/acpi/Kconfig b/src/drivers/usb/acpi/Kconfig new file mode 100644 index 0000000000..290e11055c --- /dev/null +++ b/src/drivers/usb/acpi/Kconfig @@ -0,0 +1,4 @@ +config DRIVERS_USB_ACPI + bool + default n + depends on HAVE_ACPI_TABLES diff --git a/src/drivers/usb/acpi/Makefile.inc b/src/drivers/usb/acpi/Makefile.inc new file mode 100644 index 0000000000..2e111078ad --- /dev/null +++ b/src/drivers/usb/acpi/Makefile.inc @@ -0,0 +1 @@ +ramstage-$(CONFIG_DRIVERS_USB_ACPI) += usb_acpi.c diff --git a/src/drivers/usb/acpi/chip.h b/src/drivers/usb/acpi/chip.h new file mode 100644 index 0000000000..f3f629abff --- /dev/null +++ b/src/drivers/usb/acpi/chip.h @@ -0,0 +1,54 @@ +/* + * 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. + */ + +#ifndef __USB_ACPI_CHIP_H__ +#define __USB_ACPI_CHIP_H__ + +#include <arch/acpi.h> +#include <arch/acpi_pld.h> + +struct drivers_usb_acpi_config { + const char *desc; + + /* + * Physical ports that are user visible + * + * UPC_TYPE_A + * UPC_TYPE_MINI_AB + * UPC_TYPE_EXPRESSCARD + * UPC_TYPE_USB3_A + * UPC_TYPE_USB3_B + * UPC_TYPE_USB3_MICRO_B + * UPC_TYPE_USB3_MICRO_AB + * UPC_TYPE_USB3_POWER_B + * UPC_TYPE_C_USB2_ONLY + * UPC_TYPE_C_USB2_SS_SWITCH + * UPC_TYPE_C_USB2_SS + * + * Non-visible ports or special devices + * + * UPC_TYPE_PROPRIETARY + * UPC_TYPE_INTERNAL + * UPC_TYPE_UNUSED + * UPC_TYPE_HUB + */ + enum acpi_upc_type type; + + /* Define a custom physical location for the port */ + bool use_custom_pld; + struct acpi_pld custom_pld; +}; + +#endif /* __USB_ACPI_CHIP_H__ */ 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 +}; |