| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <acpi/acpigen.h> |
| #include <acpi/acpi_device.h> |
| #include <acpi/acpi_soundwire.h> |
| #include <commonlib/helpers.h> |
| #include <device/device.h> |
| #include <device/path.h> |
| #include <device/soundwire.h> |
| #include <stdbool.h> |
| #include <stdint.h> |
| |
| #include "soundwire.h" |
| #include "chip.h" |
| |
| __weak int soc_fill_soundwire_controller(struct intel_soundwire_controller **controller) |
| { |
| return -1; |
| } |
| |
| static bool link_enabled(const struct device *dev, unsigned int link) |
| { |
| struct device *child; |
| |
| for (child = dev->link_list->children; child; child = child->sibling) { |
| if (child->enabled && child->path.type == DEVICE_PATH_GENERIC && |
| child->path.generic.id == link) |
| return true; |
| } |
| return false; |
| } |
| |
| static void intel_soundwire_link_prop_cb(struct acpi_dp *dsd, unsigned int id, |
| const struct soundwire_controller *controller) |
| { |
| struct intel_soundwire_controller *intel_controller = |
| container_of(controller, struct intel_soundwire_controller, sdw); |
| unsigned int quirk_mask = intel_controller->quirk_mask; |
| |
| /* Disable link if no are children enabled on this link device. */ |
| if (!link_enabled(intel_controller->dev, id)) |
| quirk_mask |= INTEL_SOUNDWIRE_QUIRK_BUS_DISABLE; |
| |
| acpi_dp_add_integer(dsd, "intel-sdw-ip-clock", intel_controller->ip_clock); |
| acpi_dp_add_integer(dsd, "intel-quirk-mask", quirk_mask); |
| } |
| |
| static void intel_soundwire_fill_ssdt(const struct device *dev) |
| { |
| struct acpi_dp *dsd; |
| struct intel_soundwire_controller *controller; |
| const char *scope = acpi_device_scope(dev); |
| |
| if (!dev->enabled || !scope) |
| return; |
| |
| if (soc_fill_soundwire_controller(&controller) < 0 || !controller) |
| return; |
| |
| /* Provide device pointer for link property callback function. */ |
| controller->dev = dev; |
| |
| acpigen_write_scope(scope); |
| acpigen_write_device(acpi_device_name(dev)); |
| acpigen_write_name_string("_DDN", dev->chip_ops->name); |
| acpigen_write_name_integer("_ADR", controller->acpi_address); |
| acpigen_write_name_string("_CID", ACPI_HID_CONTAINER); |
| |
| acpigen_write_STA(acpi_device_status(dev)); |
| |
| dsd = acpi_dp_new_table("_DSD"); |
| soundwire_gen_controller(dsd, &controller->sdw, &intel_soundwire_link_prop_cb); |
| acpi_dp_write(dsd); |
| |
| acpigen_pop_len(); /* Device */ |
| acpigen_pop_len(); /* Scope */ |
| } |
| |
| static const char *intel_soundwire_acpi_name(const struct device *dev) |
| { |
| return "SNDW"; |
| } |
| |
| static struct device_operations intel_soundwire_ops = { |
| .read_resources = noop_read_resources, |
| .set_resources = noop_set_resources, |
| .acpi_name = intel_soundwire_acpi_name, |
| .acpi_fill_ssdt = intel_soundwire_fill_ssdt, |
| .scan_bus = scan_static_bus, |
| }; |
| |
| static void intel_soundwire_enable(struct device *dev) |
| { |
| dev->ops = &intel_soundwire_ops; |
| } |
| |
| struct chip_operations drivers_intel_soundwire_ops = { |
| CHIP_NAME("Intel SoundWire Controller") |
| .enable_dev = intel_soundwire_enable |
| }; |