| /* 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 <stdlib.h> |
| #include <string.h> |
| #include "chip.h" |
| |
| static const char *i2c_gpiomux_bus_acpi_name(const struct device *dev) |
| { |
| static char name[ACPI_NAME_BUFFER_SIZE]; |
| |
| snprintf(name, ACPI_NAME_BUFFER_SIZE, "MXA%01.1X", dev->path.generic.id); |
| return name; |
| } |
| |
| static void i2c_gpiomux_bus_fill_ssdt(const struct device *dev) |
| { |
| const char *scope = acpi_device_scope(dev); |
| const char *path = acpi_device_path(dev); |
| |
| if (!dev || !dev->enabled || !scope || !path) |
| return; |
| |
| /* Device */ |
| acpigen_write_scope(scope); |
| acpigen_write_device(acpi_device_name(dev)); |
| |
| acpigen_write_STA(acpi_device_status(dev)); |
| acpigen_write_ADR(dev->path.generic.id); |
| |
| acpigen_pop_len(); /* Device */ |
| acpigen_pop_len(); /* Scope */ |
| |
| printk(BIOS_INFO, "%s: %s at %s\n", path, dev->chip_ops->name, dev_path(dev)); |
| } |
| |
| static struct device_operations i2c_gpiomux_bus_ops = { |
| .read_resources = noop_read_resources, |
| .set_resources = noop_set_resources, |
| .scan_bus = scan_static_bus, |
| .acpi_name = i2c_gpiomux_bus_acpi_name, |
| .acpi_fill_ssdt = i2c_gpiomux_bus_fill_ssdt, |
| }; |
| |
| static void i2c_gpiomux_bus_enable(struct device *dev) |
| { |
| if (!dev) |
| return; |
| |
| dev->ops = &i2c_gpiomux_bus_ops; |
| } |
| |
| struct chip_operations drivers_i2c_gpiomux_bus_ops = { |
| CHIP_NAME("I2C GPIO MUX Bus Device") |
| .enable_dev = i2c_gpiomux_bus_enable |
| }; |