// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Common code for mac80211 Prism54 drivers
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*
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* Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
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* Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de>
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* Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
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*
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* Based on:
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* - the islsm (softmac prism54) driver, which is:
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* Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
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* - stlc45xx driver
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* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
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*/
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#include <linux/firmware.h>
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#include <linux/etherdevice.h>
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#include <net/mac80211.h>
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#ifdef CONFIG_P54_LEDS
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#include <linux/leds.h>
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#endif /* CONFIG_P54_LEDS */
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#include "p54.h"
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#include "lmac.h"
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static void p54_update_leds(struct work_struct *work)
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{
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struct p54_common *priv = container_of(work, struct p54_common,
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led_work.work);
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int err, i, tmp, blink_delay = 400;
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bool rerun = false;
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/* Don't toggle the LED, when the device is down. */
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if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
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return ;
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for (i = 0; i < ARRAY_SIZE(priv->leds); i++)
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if (priv->leds[i].toggled) {
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priv->softled_state |= BIT(i);
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tmp = 70 + 200 / (priv->leds[i].toggled);
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if (tmp < blink_delay)
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blink_delay = tmp;
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if (priv->leds[i].led_dev.brightness == LED_OFF)
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rerun = true;
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priv->leds[i].toggled =
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!!priv->leds[i].led_dev.brightness;
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} else
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priv->softled_state &= ~BIT(i);
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err = p54_set_leds(priv);
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if (err && net_ratelimit())
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wiphy_err(priv->hw->wiphy,
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"failed to update LEDs (%d).\n", err);
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if (rerun)
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ieee80211_queue_delayed_work(priv->hw, &priv->led_work,
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msecs_to_jiffies(blink_delay));
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}
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static void p54_led_brightness_set(struct led_classdev *led_dev,
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enum led_brightness brightness)
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{
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struct p54_led_dev *led = container_of(led_dev, struct p54_led_dev,
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led_dev);
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struct ieee80211_hw *dev = led->hw_dev;
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struct p54_common *priv = dev->priv;
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if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
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return ;
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if ((brightness) && (led->registered)) {
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led->toggled++;
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ieee80211_queue_delayed_work(priv->hw, &priv->led_work, HZ/10);
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}
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}
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static int p54_register_led(struct p54_common *priv,
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unsigned int led_index,
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char *name, const char *trigger)
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{
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struct p54_led_dev *led = &priv->leds[led_index];
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int err;
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if (led->registered)
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return -EEXIST;
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snprintf(led->name, sizeof(led->name), "p54-%s::%s",
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wiphy_name(priv->hw->wiphy), name);
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led->hw_dev = priv->hw;
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led->index = led_index;
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led->led_dev.name = led->name;
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led->led_dev.default_trigger = trigger;
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led->led_dev.brightness_set = p54_led_brightness_set;
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err = led_classdev_register(wiphy_dev(priv->hw->wiphy), &led->led_dev);
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if (err)
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wiphy_err(priv->hw->wiphy,
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"Failed to register %s LED.\n", name);
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else
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led->registered = 1;
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return err;
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}
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int p54_init_leds(struct p54_common *priv)
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{
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int err;
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/*
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* TODO:
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* Figure out if the EEPROM contains some hints about the number
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* of available/programmable LEDs of the device.
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*/
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INIT_DELAYED_WORK(&priv->led_work, p54_update_leds);
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err = p54_register_led(priv, 0, "assoc",
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ieee80211_get_assoc_led_name(priv->hw));
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if (err)
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return err;
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err = p54_register_led(priv, 1, "tx",
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ieee80211_get_tx_led_name(priv->hw));
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if (err)
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return err;
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err = p54_register_led(priv, 2, "rx",
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ieee80211_get_rx_led_name(priv->hw));
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if (err)
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return err;
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err = p54_register_led(priv, 3, "radio",
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ieee80211_get_radio_led_name(priv->hw));
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if (err)
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return err;
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err = p54_set_leds(priv);
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return err;
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}
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void p54_unregister_leds(struct p54_common *priv)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(priv->leds); i++) {
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if (priv->leds[i].registered) {
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priv->leds[i].registered = false;
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priv->leds[i].toggled = 0;
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led_classdev_unregister(&priv->leds[i].led_dev);
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}
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}
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cancel_delayed_work_sync(&priv->led_work);
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}
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