/* SPDX-License-Identifier: GPL-2.0-or-later */ #include <acpi/acpi_device.h> #include <acpi/acpigen.h> #include <console/console.h> #include <device/i2c.h> #include <device/device.h> #include <identity.h> #include <stdint.h> #include <stdio.h> #include <vendorcode/google/dsm_calib.h> #include "chip.h" #define MAX98390_ACPI_HID "MX98390" #define MAX98390_DP_INT(key, val) acpi_dp_add_integer(dp, "maxim," key, (val)) static void max98390_fill_ssdt(const struct device *dev) { struct drivers_i2c_max98390_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 = I2C_SPEED_FAST, .resource = scope, }; struct acpi_dp *dp = NULL; uint64_t r0_value, temp_value; char dsm_name[80] = {}; if (!scope) return; /* Device */ acpigen_write_scope(scope); acpigen_write_device(acpi_device_name(dev)); acpigen_write_name_string("_HID", MAX98390_ACPI_HID); acpigen_write_name_integer("_UID", config->uid); 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 */ if (CONFIG(GOOGLE_DSM_CALIB)) { if (get_dsm_calibration_from_key(config->r0_calib_key, &r0_value) || get_dsm_calibration_from_key(config->temperature_calib_key, &temp_value)) { printk(BIOS_ERR, "Failed to get dsm_calib parameters from VPD" " with key %s and %s\n", config->r0_calib_key, config->temperature_calib_key); } else { dp = acpi_dp_new_table("_DSD"); MAX98390_DP_INT("r0_calib", r0_value); MAX98390_DP_INT("temperature_calib", temp_value); printk(BIOS_INFO, "set dsm_calib properties\n"); } } if (CONFIG(GOOGLE_DSM_PARAM_FILE_NAME)) { if (config->dsm_param_file_name) { if (!dp) dp = acpi_dp_new_table("_DSD"); size_t chars = snprintf(dsm_name, sizeof(dsm_name), "%s_%s_%s.bin", config->dsm_param_file_name, mainboard_vendor, mainboard_part_number); if (chars >= sizeof(dsm_name)) printk(BIOS_ERR, "String too long in %s\n", __func__); acpi_dp_add_string(dp, "maxim,dsm_param_name", dsm_name); } } if (!dp) dp = acpi_dp_new_table("_DSD"); acpi_dp_add_integer(dp, "maxim,vmon-slot-no", config->vmon_slot_no); acpi_dp_add_integer(dp, "maxim,imon-slot-no", config->imon_slot_no); if (dp) 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 *max98390_acpi_name(const struct device *dev) { struct drivers_i2c_max98390_config *config = dev->chip_info; static char name[5]; if (config->name) return config->name; snprintf(name, sizeof(name), "D%03.3X", dev->path.i2c.device); return name; } static struct device_operations max98390_ops = { .read_resources = noop_read_resources, .set_resources = noop_set_resources, .acpi_name = max98390_acpi_name, .acpi_fill_ssdt = max98390_fill_ssdt, }; static void max98390_enable(struct device *dev) { struct drivers_i2c_max98390_config *config = dev->chip_info; if (!config) return; dev->ops = &max98390_ops; /* Name the device as per description provided in devicetree */ if (config->desc) dev->name = config->desc; } struct chip_operations drivers_i2c_max98390_ops = { .name = "Maxim MAX98390 Codec", .enable_dev = max98390_enable };