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// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (C) 2012-2014, 2018-2019 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");
/* fall through */
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->trans_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;
}
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