Orange Pi5 kernel

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