/* Copyright (C) 2004 - 2008 rt2x00 SourceForge Project This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Module: rt2x00lib Abstract: rt2x00 led specific routines. */ #include #include #include "rt2x00.h" #include "rt2x00lib.h" void rt2x00leds_led_quality(struct rt2x00_dev *rt2x00dev, int rssi) { if (!rt2x00dev->trigger_qual.registered) return; /* * Led handling requires a positive value for the rssi, * to do that correctly we need to add the correction. */ rssi += rt2x00dev->rssi_offset; /* * Get the rssi level, this is used to convert the rssi * to a LED value inside the range LED_OFF - LED_FULL. */ if (rssi <= 30) rssi = 0; else if (rssi <= 39) rssi = 1; else if (rssi <= 49) rssi = 2; else if (rssi <= 53) rssi = 3; else if (rssi <= 63) rssi = 4; else rssi = 5; /* * Note that we must _not_ send LED_OFF since the driver * is going to calculate the value and might use it in a * division. */ led_trigger_event(&rt2x00dev->trigger_qual.trigger, ((LED_FULL / 6) * rssi) + 1); } static int rt2x00leds_register_trigger(struct rt2x00_dev *rt2x00dev, struct rt2x00_trigger *trigger, const char *name) { int retval; trigger->trigger.name = name; retval = led_trigger_register(&trigger->trigger); if (retval) { ERROR(rt2x00dev, "Failed to register led trigger.\n"); return retval; } trigger->registered = 1; return 0; } static int rt2x00leds_register_led(struct rt2x00_dev *rt2x00dev, struct rt2x00_led *led, enum led_type type, const char *name, char *trigger) { struct device *device = wiphy_dev(rt2x00dev->hw->wiphy); int retval; led->led_dev.name = name; led->led_dev.brightness_set = rt2x00dev->ops->lib->led_brightness; led->led_dev.default_trigger = trigger; retval = led_classdev_register(device, &led->led_dev); if (retval) { ERROR(rt2x00dev, "Failed to register led handler.\n"); return retval; } led->rt2x00dev = rt2x00dev; led->type = type; led->registered = 1; return 0; } void rt2x00leds_register(struct rt2x00_dev *rt2x00dev) { char *trigger; char dev_name[16]; char name[32]; int retval; if (!rt2x00dev->ops->lib->led_brightness) return; snprintf(dev_name, sizeof(dev_name), "%s-%s", rt2x00dev->ops->name, wiphy_name(rt2x00dev->hw->wiphy)); if (rt2x00dev->led_flags & LED_SUPPORT_RADIO) { trigger = ieee80211_get_radio_led_name(rt2x00dev->hw); snprintf(name, sizeof(name), "%s:radio", dev_name); retval = rt2x00leds_register_led(rt2x00dev, &rt2x00dev->led_radio, LED_TYPE_RADIO, name, trigger); if (retval) goto exit_fail; } if (rt2x00dev->led_flags & LED_SUPPORT_ASSOC) { trigger = ieee80211_get_assoc_led_name(rt2x00dev->hw); snprintf(name, sizeof(name), "%s:assoc", dev_name); retval = rt2x00leds_register_led(rt2x00dev, &rt2x00dev->led_assoc, LED_TYPE_ASSOC, name, trigger); if (retval) goto exit_fail; } if (rt2x00dev->led_flags & LED_SUPPORT_QUALITY) { snprintf(name, sizeof(name), "%s:quality", dev_name); retval = rt2x00leds_register_trigger(rt2x00dev, &rt2x00dev->trigger_qual, name); retval = rt2x00leds_register_led(rt2x00dev, &rt2x00dev->led_qual, LED_TYPE_QUALITY, name, name); if (retval) goto exit_fail; } return; exit_fail: rt2x00leds_unregister(rt2x00dev); } static void rt2x00leds_unregister_trigger(struct rt2x00_trigger *trigger) { if (!trigger->registered) return; led_trigger_unregister(&trigger->trigger); trigger->registered = 0; } static void rt2x00leds_unregister_led(struct rt2x00_led *led) { if (!led->registered) return; led_classdev_unregister(&led->led_dev); led->led_dev.brightness_set(&led->led_dev, LED_OFF); led->registered = 0; } void rt2x00leds_unregister(struct rt2x00_dev *rt2x00dev) { rt2x00leds_unregister_trigger(&rt2x00dev->trigger_qual); rt2x00leds_unregister_led(&rt2x00dev->led_qual); rt2x00leds_unregister_led(&rt2x00dev->led_assoc); rt2x00leds_unregister_led(&rt2x00dev->led_radio); } void rt2x00leds_suspend(struct rt2x00_dev *rt2x00dev) { if (rt2x00dev->led_qual.registered) led_classdev_suspend(&rt2x00dev->led_qual.led_dev); if (rt2x00dev->led_assoc.registered) led_classdev_suspend(&rt2x00dev->led_assoc.led_dev); if (rt2x00dev->led_radio.registered) led_classdev_suspend(&rt2x00dev->led_radio.led_dev); } void rt2x00leds_resume(struct rt2x00_dev *rt2x00dev) { if (rt2x00dev->led_radio.registered) led_classdev_resume(&rt2x00dev->led_radio.led_dev); if (rt2x00dev->led_assoc.registered) led_classdev_resume(&rt2x00dev->led_assoc.led_dev); if (rt2x00dev->led_qual.registered) led_classdev_resume(&rt2x00dev->led_qual.led_dev); }