| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* This file is part of the coreboot project. */ |
| |
| #include <arch/acpi.h> |
| #include <arch/acpi_device.h> |
| #include <arch/acpigen.h> |
| #include <console/console.h> |
| #include <device/i2c_simple.h> |
| #include <device/device.h> |
| #include <device/path.h> |
| #include <stdint.h> |
| #include "chip.h" |
| |
| #define MAX98927_ACPI_NAME "MAXI" |
| #define MAX98927_ACPI_HID "MX98927" |
| |
| static void max98927_fill_ssdt(struct device *dev) |
| { |
| struct drivers_i2c_max98927_config *config = dev->chip_info; |
| const char *scope = acpi_device_scope(dev); |
| struct acpi_i2c i2c = { |
| .address = dev->path.i2c.device, |
| .mode_10bit = dev->path.i2c.mode_10bit, |
| .speed = config->bus_speed ? : I2C_SPEED_FAST, |
| .resource = scope, |
| }; |
| struct acpi_dp *dp; |
| |
| if (!dev->enabled || !scope) |
| return; |
| |
| /* Device */ |
| acpigen_write_scope(scope); |
| acpigen_write_device(acpi_device_name(dev)); |
| acpigen_write_name_string("_HID", MAX98927_ACPI_HID); |
| acpigen_write_name_integer("_UID", config->uid); |
| if (config->desc) |
| acpigen_write_name_string("_DDN", config->desc); |
| acpigen_write_STA(acpi_device_status(dev)); |
| |
| /* Resources */ |
| acpigen_write_name("_CRS"); |
| acpigen_write_resourcetemplate_header(); |
| acpi_device_write_i2c(&i2c); |
| acpigen_write_resourcetemplate_footer(); |
| |
| /* Device Properties */ |
| dp = acpi_dp_new_table("_DSD"); |
| |
| acpi_dp_add_integer(dp, "interleave_mode", config->interleave_mode); |
| acpi_dp_add_integer(dp, "vmon-slot-no", config->vmon_slot_no); |
| acpi_dp_add_integer(dp, "imon-slot-no", config->imon_slot_no); |
| |
| acpi_dp_write(dp); |
| |
| acpigen_pop_len(); /* Device */ |
| acpigen_pop_len(); /* Scope */ |
| |
| printk(BIOS_INFO, "%s: %s address 0%xh\n", acpi_device_path(dev), |
| dev->chip_ops->name, dev->path.i2c.device); |
| } |
| |
| static const char *max98927_acpi_name(const struct device *dev) |
| { |
| struct drivers_i2c_max98927_config *config = dev->chip_info; |
| |
| if (config->name) |
| return config->name; |
| |
| return MAX98927_ACPI_NAME; |
| } |
| |
| static struct device_operations max98927_ops = { |
| .read_resources = noop_read_resources, |
| .set_resources = noop_set_resources, |
| .acpi_name = max98927_acpi_name, |
| .acpi_fill_ssdt = max98927_fill_ssdt, |
| }; |
| |
| static void max98927_enable(struct device *dev) |
| { |
| struct drivers_i2c_max98927_config *config = dev->chip_info; |
| |
| dev->ops = &max98927_ops; |
| |
| if (config && config->desc) { |
| dev->name = config->desc; |
| } |
| } |
| |
| struct chip_operations drivers_i2c_max98927_ops = { |
| CHIP_NAME("Maxim MAX98927 Codec") |
| .enable_dev = max98927_enable |
| }; |