1 // SPDX-License-Identifier: GPL-2.0-only
3  * Linux LED driver for RTL8187
7  * Based on the LED handling in the r8187 driver, which is:
30 	struct rtl8187_led *led = &priv->led_tx;  in led_turn_on()  local
32 	/* Don't change the LED, when the device is down. */  in led_turn_on()
33 	if (!priv->vif || priv->vif->type == NL80211_IFTYPE_UNSPECIFIED)  in led_turn_on()
36 	/* Skip if the LED is not registered. */  in led_turn_on()
37 	if (!led->dev)  in led_turn_on()
39 	mutex_lock(&priv->conf_mutex);  in led_turn_on()
40 	switch (led->ledpin) {  in led_turn_on()
42 		rtl818x_iowrite8(priv, &priv->map->GPIO0, 0x01);  in led_turn_on()
43 		rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0x00);  in led_turn_on()
46 		reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~(1 << 4);  in led_turn_on()
47 		rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);  in led_turn_on()
50 		reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~(1 << 5);  in led_turn_on()
51 		rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);  in led_turn_on()
57 	mutex_unlock(&priv->conf_mutex);  in led_turn_on()
68 	struct rtl8187_led *led = &priv->led_tx;  in led_turn_off()  local
70 	/* Don't change the LED, when the device is down. */  in led_turn_off()
71 	if (!priv->vif || priv->vif->type == NL80211_IFTYPE_UNSPECIFIED)  in led_turn_off()
74 	/* Skip if the LED is not registered. */  in led_turn_off()
75 	if (!led->dev)  in led_turn_off()
77 	mutex_lock(&priv->conf_mutex);  in led_turn_off()
78 	switch (led->ledpin) {  in led_turn_off()
80 		rtl818x_iowrite8(priv, &priv->map->GPIO0, 0x01);  in led_turn_off()
81 		rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0x01);  in led_turn_off()
84 		reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) | (1 << 4);  in led_turn_off()
85 		rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);  in led_turn_off()
88 		reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) | (1 << 5);  in led_turn_off()
89 		rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);  in led_turn_off()
95 	mutex_unlock(&priv->conf_mutex);  in led_turn_off()
98 /* Callback from the LED subsystem. */
102 	struct rtl8187_led *led = container_of(led_dev, struct rtl8187_led,  in rtl8187_led_brightness_set()  local
104 	struct ieee80211_hw *hw = led->dev;  in rtl8187_led_brightness_set()
110 	priv = hw->priv;  in rtl8187_led_brightness_set()
111 	if (led->is_radio) {  in rtl8187_led_brightness_set()
113 			ieee80211_queue_delayed_work(hw, &priv->led_on, 0);  in rtl8187_led_brightness_set()
117 			cancel_delayed_work(&priv->led_on);  in rtl8187_led_brightness_set()
118 			ieee80211_queue_delayed_work(hw, &priv->led_off, 0);  in rtl8187_led_brightness_set()
122 			ieee80211_queue_delayed_work(hw, &priv->led_off, 0);  in rtl8187_led_brightness_set()
123 			/* The LED is off for 1/20 sec - it just blinks. */  in rtl8187_led_brightness_set()
124 			ieee80211_queue_delayed_work(hw, &priv->led_on,  in rtl8187_led_brightness_set()
127 			ieee80211_queue_delayed_work(hw, &priv->led_on, 0);  in rtl8187_led_brightness_set()
132 				struct rtl8187_led *led, const char *name,  in rtl8187_register_led()  argument
137 	struct rtl8187_priv *priv = dev->priv;  in rtl8187_register_led()
139 	if (led->dev)  in rtl8187_register_led()
140 		return -EEXIST;  in rtl8187_register_led()
142 		return -EINVAL;  in rtl8187_register_led()
143 	led->dev = dev;  in rtl8187_register_led()
144 	led->ledpin = ledpin;  in rtl8187_register_led()
145 	led->is_radio = is_radio;  in rtl8187_register_led()
146 	strscpy(led->name, name, sizeof(led->name));  in rtl8187_register_led()
148 	led->led_dev.name = led->name;  in rtl8187_register_led()
149 	led->led_dev.default_trigger = default_trigger;  in rtl8187_register_led()
150 	led->led_dev.brightness_set = rtl8187_led_brightness_set;  in rtl8187_register_led()
152 	err = led_classdev_register(&priv->udev->dev, &led->led_dev);  in rtl8187_register_led()
154 		printk(KERN_INFO "LEDs: Failed to register %s\n", name);  in rtl8187_register_led()
155 		led->dev = NULL;  in rtl8187_register_led()
161 static void rtl8187_unregister_led(struct rtl8187_led *led)  in rtl8187_unregister_led()  argument
163 	struct ieee80211_hw *hw = led->dev;  in rtl8187_unregister_led()
164 	struct rtl8187_priv *priv = hw->priv;  in rtl8187_unregister_led()
166 	led_classdev_unregister(&led->led_dev);  in rtl8187_unregister_led()
167 	flush_delayed_work(&priv->led_off);  in rtl8187_unregister_led()
168 	led->dev = NULL;  in rtl8187_unregister_led()
173 	struct rtl8187_priv *priv = dev->priv;  in rtl8187_leds_init()
178 	/* According to the vendor driver, the LED operation depends on the  in rtl8187_leds_init()
201 	INIT_DELAYED_WORK(&priv->led_on, led_turn_on);  in rtl8187_leds_init()
202 	INIT_DELAYED_WORK(&priv->led_off, led_turn_off);  in rtl8187_leds_init()
205 		 "rtl8187-%s::radio", wiphy_name(dev->wiphy));  in rtl8187_leds_init()
206 	err = rtl8187_register_led(dev, &priv->led_radio, name,  in rtl8187_leds_init()
212 		 "rtl8187-%s::tx", wiphy_name(dev->wiphy));  in rtl8187_leds_init()
213 	err = rtl8187_register_led(dev, &priv->led_tx, name,  in rtl8187_leds_init()
219 		 "rtl8187-%s::rx", wiphy_name(dev->wiphy));  in rtl8187_leds_init()
220 	err = rtl8187_register_led(dev, &priv->led_rx, name,  in rtl8187_leds_init()
225 	/* registration of RX LED failed - unregister */  in rtl8187_leds_init()
226 	rtl8187_unregister_led(&priv->led_tx);  in rtl8187_leds_init()
228 	rtl8187_unregister_led(&priv->led_radio);  in rtl8187_leds_init()
233 	struct rtl8187_priv *priv = dev->priv;  in rtl8187_leds_exit()
235 	rtl8187_unregister_led(&priv->led_radio);  in rtl8187_leds_exit()
236 	rtl8187_unregister_led(&priv->led_rx);  in rtl8187_leds_exit()
237 	rtl8187_unregister_led(&priv->led_tx);  in rtl8187_leds_exit()
238 	cancel_delayed_work_sync(&priv->led_off);  in rtl8187_leds_exit()
239 	cancel_delayed_work_sync(&priv->led_on);  in rtl8187_leds_exit()