8e1debd824
Adds LED and GPIO Control support for 988x, 9887, 9888, 99x0, 9984 based chipsets with on chipset connected led's using WMI Firmware API. The LED device will get available named as "ath10k-phyX" at sysfs and can be controlled with various triggers. Adds also debugfs interface for gpio control. Signed-off-by: Sebastian Gottschall <s.gottschall@dd-wrt.com> Reviewed-by: Steve deRosier <derosier@cal-sierra.com> [kvalo: major reorg and cleanup] Signed-off-by: Kalle Valo <kvalo@codeaurora.org> [ansuel: rebase and small cleanup] Signed-off-by: Christian Marangi <ansuelsmth@gmail.com> Tested-by: Stefan Lippers-Hollmann <s.l-h@gmx.de> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> Link: https://msgid.link/20230611080505.17393-1-ansuelsmth@gmail.com
90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
// SPDX-License-Identifier: ISC
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/*
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* Copyright (c) 2005-2011 Atheros Communications Inc.
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* Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
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* Copyright (c) 2018 Sebastian Gottschall <s.gottschall@dd-wrt.com>
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* Copyright (c) 2018 The Linux Foundation. All rights reserved.
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*/
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#include <linux/leds.h>
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#include "core.h"
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#include "wmi.h"
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#include "wmi-ops.h"
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#include "leds.h"
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static int ath10k_leds_set_brightness_blocking(struct led_classdev *led_cdev,
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enum led_brightness brightness)
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{
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struct ath10k *ar = container_of(led_cdev, struct ath10k,
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leds.cdev);
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struct gpio_led *led = &ar->leds.wifi_led;
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mutex_lock(&ar->conf_mutex);
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if (ar->state != ATH10K_STATE_ON)
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goto out;
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ar->leds.gpio_state_pin = (brightness != LED_OFF) ^ led->active_low;
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ath10k_wmi_gpio_output(ar, led->gpio, ar->leds.gpio_state_pin);
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out:
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mutex_unlock(&ar->conf_mutex);
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return 0;
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}
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int ath10k_leds_start(struct ath10k *ar)
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{
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if (ar->hw_params.led_pin == 0)
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/* leds not supported */
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return 0;
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/* under some circumstances, the gpio pin gets reconfigured
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* to default state by the firmware, so we need to
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* reconfigure it this behaviour has only ben seen on
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* QCA9984 and QCA99XX devices so far
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*/
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ath10k_wmi_gpio_config(ar, ar->hw_params.led_pin, 0,
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WMI_GPIO_PULL_NONE, WMI_GPIO_INTTYPE_DISABLE);
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ath10k_wmi_gpio_output(ar, ar->hw_params.led_pin, 1);
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return 0;
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}
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int ath10k_leds_register(struct ath10k *ar)
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{
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int ret;
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if (ar->hw_params.led_pin == 0)
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/* leds not supported */
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return 0;
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snprintf(ar->leds.label, sizeof(ar->leds.label), "ath10k-%s",
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wiphy_name(ar->hw->wiphy));
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ar->leds.wifi_led.active_low = 1;
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ar->leds.wifi_led.gpio = ar->hw_params.led_pin;
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ar->leds.wifi_led.name = ar->leds.label;
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ar->leds.wifi_led.default_state = LEDS_GPIO_DEFSTATE_KEEP;
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ar->leds.cdev.name = ar->leds.label;
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ar->leds.cdev.brightness_set_blocking = ath10k_leds_set_brightness_blocking;
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ar->leds.cdev.default_trigger = ar->leds.wifi_led.default_trigger;
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ret = led_classdev_register(wiphy_dev(ar->hw->wiphy), &ar->leds.cdev);
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if (ret)
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return ret;
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return 0;
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}
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void ath10k_leds_unregister(struct ath10k *ar)
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{
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if (ar->hw_params.led_pin == 0)
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/* leds not supported */
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return;
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led_classdev_unregister(&ar->leds.cdev);
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}
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