| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <acpi/acpi_device.h> |
| #include <acpi/acpigen.h> |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <device/path.h> |
| #include <gpio.h> |
| #include "chip.h" |
| |
| const char *nauhid[MAX_HID] = {"NVTN2010", "NVTN2012"}; |
| |
| static void nau8315_fill_ssdt(const struct device *dev) |
| { |
| struct drivers_generic_nau8315_config *config = dev->chip_info; |
| const char *path; |
| struct acpi_dp *dp; |
| |
| if (!dev->enabled || !config) |
| return; |
| |
| const char *scope = acpi_device_scope(dev); |
| const char *name = acpi_device_name(dev); |
| if (!scope || !name) |
| return; |
| |
| /* Device */ |
| acpigen_write_scope(scope); |
| acpigen_write_device(name); |
| |
| acpigen_write_name_string("_HID", nauhid[config->hid]); |
| acpigen_write_name_integer("_UID", 0); |
| acpigen_write_name_string("_DDN", dev->chip_ops->name); |
| acpigen_write_STA(acpi_device_status(dev)); |
| |
| /* Resources */ |
| acpigen_write_name("_CRS"); |
| acpigen_write_resourcetemplate_header(); |
| acpi_device_write_gpio(&config->enable_gpio); |
| acpigen_write_resourcetemplate_footer(); |
| |
| /* _DSD for devicetree properties */ |
| /* This points to the first pin in the first gpio entry in _CRS */ |
| path = acpi_device_path(dev); |
| dp = acpi_dp_new_table("_DSD"); |
| acpi_dp_add_gpio(dp, "enable-gpios", path, 0, 0, |
| config->enable_gpio.active_low); |
| acpi_dp_write(dp); |
| |
| acpigen_pop_len(); /* Device */ |
| acpigen_pop_len(); /* Scope */ |
| |
| printk(BIOS_INFO, "%s: %s\n", path, dev->chip_ops->name); |
| } |
| |
| static const char *nau8315_acpi_name(const struct device *dev) |
| { |
| return "NVTN"; |
| } |
| |
| static struct device_operations nau8315_ops = { |
| .read_resources = noop_read_resources, |
| .set_resources = noop_set_resources, |
| .acpi_name = nau8315_acpi_name, |
| .acpi_fill_ssdt = nau8315_fill_ssdt, |
| }; |
| |
| static void nau8315_enable(struct device *dev) |
| { |
| dev->ops = &nau8315_ops; |
| } |
| |
| struct chip_operations drivers_generic_nau8315_ops = { |
| CHIP_NAME("Nuvoton NAU8315 Amplifier") |
| .enable_dev = nau8315_enable |
| }; |