// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
 * Copyright (C) 2012-2014, 2018-2019, 2025 Intel Corporation
 * Copyright (C) 2017 Intel Deutschland GmbH
 */
#include <linux/leds.h>
#include "iwl-io.h"
#include "iwl-csr.h"
#include "mvm.h"

static void iwl_mvm_send_led_fw_cmd(struct iwl_mvm *mvm, bool on)
{
        struct iwl_led_cmd led_cmd = {
                .status = cpu_to_le32(on),
        };
        struct iwl_host_cmd cmd = {
                .id = WIDE_ID(LONG_GROUP, LEDS_CMD),
                .len = { sizeof(led_cmd), },
                .data = { &led_cmd, },
                .flags = CMD_ASYNC,
        };
        int err;

        if (!iwl_mvm_firmware_running(mvm))
                return;

        err = iwl_mvm_send_cmd(mvm, &cmd);

        if (err)
                IWL_WARN(mvm, "LED command failed: %d\n", err);
}

static void iwl_mvm_led_set(struct iwl_mvm *mvm, bool on)
{
        if (fw_has_capa(&mvm->fw->ucode_capa,
                        IWL_UCODE_TLV_CAPA_LED_CMD_SUPPORT)) {
                iwl_mvm_send_led_fw_cmd(mvm, on);
                return;
        }

        iwl_write32(mvm->trans, CSR_LED_REG,
                    on ? CSR_LED_REG_TURN_ON : CSR_LED_REG_TURN_OFF);
}

static void iwl_led_brightness_set(struct led_classdev *led_cdev,
                                   enum led_brightness brightness)
{
        struct iwl_mvm *mvm = container_of(led_cdev, struct iwl_mvm, led);

        iwl_mvm_led_set(mvm, brightness > 0);
}

int iwl_mvm_leds_init(struct iwl_mvm *mvm)
{
        int mode = iwlwifi_mod_params.led_mode;
        int ret;

        switch (mode) {
        case IWL_LED_BLINK:
                IWL_ERR(mvm, "Blink led mode not supported, used default\n");
                fallthrough;
        case IWL_LED_DEFAULT:
        case IWL_LED_RF_STATE:
                mode = IWL_LED_RF_STATE;
                break;
        case IWL_LED_DISABLE:
                IWL_INFO(mvm, "Led disabled\n");
                return 0;
        default:
                return -EINVAL;
        }

        mvm->led.name = kasprintf(GFP_KERNEL, "%s-led",
                                   wiphy_name(mvm->hw->wiphy));
        if (!mvm->led.name)
                return -ENOMEM;

        mvm->led.brightness_set = iwl_led_brightness_set;
        mvm->led.max_brightness = 1;

        if (mode == IWL_LED_RF_STATE)
                mvm->led.default_trigger =
                        ieee80211_get_radio_led_name(mvm->hw);

        ret = led_classdev_register(mvm->trans->dev, &mvm->led);
        if (ret) {
                kfree(mvm->led.name);
                IWL_INFO(mvm, "Failed to enable led\n");
                return ret;
        }

        mvm->init_status |= IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE;
        return 0;
}

void iwl_mvm_leds_sync(struct iwl_mvm *mvm)
{
        if (!(mvm->init_status & IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE))
                return;

        /*
         * if we control through the register, we're doing it
         * even when the firmware isn't up, so no need to sync
         */
        if (mvm->trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_8000)
                return;

        iwl_mvm_led_set(mvm, mvm->led.brightness > 0);
}

void iwl_mvm_leds_exit(struct iwl_mvm *mvm)
{
        if (!(mvm->init_status & IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE))
                return;

        led_classdev_unregister(&mvm->led);
        kfree(mvm->led.name);
        mvm->init_status &= ~IWL_MVM_INIT_STATUS_LEDS_INIT_COMPLETE;
}