| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #include <acpi/acpi.h> |
| #include <acpi/acpi_device.h> |
| #include <acpi/acpigen.h> |
| #include <console/console.h> |
| #include <device/i2c.h> |
| #include <device/device.h> |
| #include <device/path.h> |
| #include <stdint.h> |
| #include <vendorcode/google/chromeos/chromeos.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(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; |
| uint64_t r0_value, temp_value; |
| |
| if (!dev->enabled || !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(CHROMEOS_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); |
| acpi_dp_write(dp); |
| printk(BIOS_INFO, "set dsm_calib properties\n"); |
| } |
| } |
| |
| 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_generator = 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 = { |
| CHIP_NAME("Maxim MAX98390 Codec") |
| .enable_dev = max98390_enable |
| }; |