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// SPDX-License-Identifier: ISC
/*
* Copyright (c) 2005-2011 Atheros Communications Inc.
* Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
* Copyright (c) 2018 Sebastian Gottschall <s.gottschall@dd-wrt.com>
* Copyright (c) 2018 The Linux Foundation. All rights reserved.
*/
#include <linux/leds.h>
#include "core.h"
#include "wmi.h"
#include "wmi-ops.h"
#include "leds.h"
static int ath10k_leds_set_brightness_blocking(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct ath10k *ar = container_of(led_cdev, struct ath10k,
leds.cdev);
struct gpio_led *led = &ar->leds.wifi_led;
mutex_lock(&ar->conf_mutex);
if (ar->state != ATH10K_STATE_ON)
goto out;
ar->leds.gpio_state_pin = (brightness != LED_OFF) ^ led->active_low;
ath10k_wmi_gpio_output(ar, led->gpio, ar->leds.gpio_state_pin);
out:
mutex_unlock(&ar->conf_mutex);
return 0;
}
int ath10k_leds_start(struct ath10k *ar)
{
if (ar->hw_params.led_pin == 0)
/* leds not supported */
return 0;
/* under some circumstances, the gpio pin gets reconfigured
* to default state by the firmware, so we need to
* reconfigure it this behaviour has only ben seen on
* QCA9984 and QCA99XX devices so far
*/
ath10k_wmi_gpio_config(ar, ar->hw_params.led_pin, 0,
WMI_GPIO_PULL_NONE, WMI_GPIO_INTTYPE_DISABLE);
ath10k_wmi_gpio_output(ar, ar->hw_params.led_pin, 1);
return 0;
}
int ath10k_leds_register(struct ath10k *ar)
{
int ret;
if (ar->hw_params.led_pin == 0)
/* leds not supported */
return 0;
snprintf(ar->leds.label, sizeof(ar->leds.label), "ath10k-%s",
wiphy_name(ar->hw->wiphy));
ar->leds.wifi_led.active_low = 1;
ar->leds.wifi_led.gpio = ar->hw_params.led_pin;
ar->leds.wifi_led.name = ar->leds.label;
ar->leds.wifi_led.default_state = LEDS_GPIO_DEFSTATE_KEEP;
ar->leds.cdev.name = ar->leds.label;
ar->leds.cdev.brightness_set_blocking = ath10k_leds_set_brightness_blocking;
ar->leds.cdev.default_trigger = ar->leds.wifi_led.default_trigger;
ret = led_classdev_register(wiphy_dev(ar->hw->wiphy), &ar->leds.cdev);
if (ret)
return ret;
return 0;
}
void ath10k_leds_unregister(struct ath10k *ar)
{
if (ar->hw_params.led_pin == 0)
/* leds not supported */
return;
led_classdev_unregister(&ar->leds.cdev);
}
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