| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2016 Google Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #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 <string.h> |
| #include "chip.h" |
| |
| #if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) |
| |
| #define NAU8825_ACPI_NAME "NAU8" |
| #define NAU8825_ACPI_HID "10508825" |
| |
| #define NAU8825_DP_INT(key,val) \ |
| acpi_dp_add_integer(dp, "nuvoton," key, (val)) |
| |
| static void nau8825_fill_ssdt(struct device *dev) |
| { |
| struct drivers_i2c_nau8825_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 = NULL; |
| |
| if (!dev->enabled || !scope) |
| return; |
| if (config->sar_threshold_num > NAU8825_MAX_BUTTONS) |
| return; |
| |
| /* Device */ |
| acpigen_write_scope(scope); |
| acpigen_write_device(acpi_device_name(dev)); |
| acpigen_write_name_string("_HID", NAU8825_ACPI_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_i2c(&i2c); |
| acpi_device_write_interrupt(&config->irq); |
| acpigen_write_resourcetemplate_footer(); |
| |
| /* Device Properties */ |
| dp = acpi_dp_new_table("_DSD"); |
| NAU8825_DP_INT("jkdet-enable", config->jkdet_enable); |
| NAU8825_DP_INT("jkdet-pull-enable", config->jkdet_pull_enable); |
| NAU8825_DP_INT("jkdet-pull-up", config->jkdet_pull_up); |
| NAU8825_DP_INT("jkdet-polarity", config->jkdet_polarity); |
| NAU8825_DP_INT("vref-impedance", config->vref_impedance); |
| NAU8825_DP_INT("micbias-voltage", config->micbias_voltage); |
| NAU8825_DP_INT("sar-hysteresis", config->sar_hysteresis); |
| NAU8825_DP_INT("sar-voltage", config->sar_voltage); |
| NAU8825_DP_INT("sar-compare-time", config->sar_compare_time); |
| NAU8825_DP_INT("sar-sampling-time", config->sar_sampling_time); |
| NAU8825_DP_INT("short-key-debounce", config->short_key_debounce); |
| NAU8825_DP_INT("jack-insert-debounce", config->jack_insert_debounce); |
| NAU8825_DP_INT("jack-eject-deboune", config->jack_eject_debounce); |
| NAU8825_DP_INT("sar-threshold-num", config->sar_threshold_num); |
| acpi_dp_add_integer_array(dp, "nuvoton,sar-threshold", |
| config->sar_threshold, config->sar_threshold_num); |
| acpi_dp_write(dp); |
| |
| acpigen_pop_len(); /* Device */ |
| acpigen_pop_len(); /* Scope */ |
| |
| printk(BIOS_INFO, "%s: %s address 0%xh irq %d\n", |
| acpi_device_path(dev), dev->chip_ops->name, |
| dev->path.i2c.device, config->irq.pin); |
| } |
| |
| static const char *nau8825_acpi_name(const struct device *dev) |
| { |
| return NAU8825_ACPI_NAME; |
| } |
| #endif |
| |
| static struct device_operations nau8825_ops = { |
| .read_resources = DEVICE_NOOP, |
| .set_resources = DEVICE_NOOP, |
| .enable_resources = DEVICE_NOOP, |
| #if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) |
| .acpi_name = &nau8825_acpi_name, |
| .acpi_fill_ssdt_generator = &nau8825_fill_ssdt, |
| #endif |
| }; |
| |
| static void nau8825_enable(struct device *dev) |
| { |
| dev->ops = &nau8825_ops; |
| } |
| |
| struct chip_operations drivers_i2c_nau8825_ops = { |
| CHIP_NAME("Nuvoton NAU8825 Codec") |
| .enable_dev = &nau8825_enable |
| }; |