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linux_dsm_epyc7002/drivers/net/wireless/broadcom/b43legacy/leds.c
Thomas Gleixner ca47d34458 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 20 
Based on 1 normalized pattern(s):

  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 see the file copying if not write to the free
  software foundation inc 51 franklin steet fifth floor boston ma
  02110 1301 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 41 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154042.524645346@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 11:28:46 +02:00

231 lines
6.2 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
Broadcom B43 wireless driver
LED control
Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
Copyright (c) 2005-2007 Michael Buesch <m@bues.ch>
Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
*/
#include "b43legacy.h"
#include "leds.h"
#include "rfkill.h"
static void b43legacy_led_turn_on(struct b43legacy_wldev *dev, u8 led_index,
bool activelow)
{
struct b43legacy_wl *wl = dev->wl;
unsigned long flags;
u16 ctl;
spin_lock_irqsave(&wl->leds_lock, flags);
ctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
if (activelow)
ctl &= ~(1 << led_index);
else
ctl |= (1 << led_index);
b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ctl);
spin_unlock_irqrestore(&wl->leds_lock, flags);
}
static void b43legacy_led_turn_off(struct b43legacy_wldev *dev, u8 led_index,
bool activelow)
{
struct b43legacy_wl *wl = dev->wl;
unsigned long flags;
u16 ctl;
spin_lock_irqsave(&wl->leds_lock, flags);
ctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
if (activelow)
ctl |= (1 << led_index);
else
ctl &= ~(1 << led_index);
b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ctl);
spin_unlock_irqrestore(&wl->leds_lock, flags);
}
/* Callback from the LED subsystem. */
static void b43legacy_led_brightness_set(struct led_classdev *led_dev,
enum led_brightness brightness)
{
struct b43legacy_led *led = container_of(led_dev, struct b43legacy_led,
led_dev);
struct b43legacy_wldev *dev = led->dev;
bool radio_enabled;
/* Checking the radio-enabled status here is slightly racy,
* but we want to avoid the locking overhead and we don't care
* whether the LED has the wrong state for a second. */
radio_enabled = (dev->phy.radio_on && dev->radio_hw_enable);
if (brightness == LED_OFF || !radio_enabled)
b43legacy_led_turn_off(dev, led->index, led->activelow);
else
b43legacy_led_turn_on(dev, led->index, led->activelow);
}
static int b43legacy_register_led(struct b43legacy_wldev *dev,
struct b43legacy_led *led,
const char *name,
const char *default_trigger,
u8 led_index, bool activelow)
{
int err;
b43legacy_led_turn_off(dev, led_index, activelow);
if (led->dev)
return -EEXIST;
if (!default_trigger)
return -EINVAL;
led->dev = dev;
led->index = led_index;
led->activelow = activelow;
strlcpy(led->name, name, sizeof(led->name));
led->led_dev.name = led->name;
led->led_dev.default_trigger = default_trigger;
led->led_dev.brightness_set = b43legacy_led_brightness_set;
err = led_classdev_register(dev->dev->dev, &led->led_dev);
if (err) {
b43legacywarn(dev->wl, "LEDs: Failed to register %s\n", name);
led->dev = NULL;
return err;
}
return 0;
}
static void b43legacy_unregister_led(struct b43legacy_led *led)
{
if (!led->dev)
return;
led_classdev_unregister(&led->led_dev);
b43legacy_led_turn_off(led->dev, led->index, led->activelow);
led->dev = NULL;
}
static void b43legacy_map_led(struct b43legacy_wldev *dev,
u8 led_index,
enum b43legacy_led_behaviour behaviour,
bool activelow)
{
struct ieee80211_hw *hw = dev->wl->hw;
char name[B43legacy_LED_MAX_NAME_LEN + 1];
/* Map the b43 specific LED behaviour value to the
* generic LED triggers. */
switch (behaviour) {
case B43legacy_LED_INACTIVE:
break;
case B43legacy_LED_OFF:
b43legacy_led_turn_off(dev, led_index, activelow);
break;
case B43legacy_LED_ON:
b43legacy_led_turn_on(dev, led_index, activelow);
break;
case B43legacy_LED_ACTIVITY:
case B43legacy_LED_TRANSFER:
case B43legacy_LED_APTRANSFER:
snprintf(name, sizeof(name),
"b43legacy-%s::tx", wiphy_name(hw->wiphy));
b43legacy_register_led(dev, &dev->led_tx, name,
ieee80211_get_tx_led_name(hw),
led_index, activelow);
snprintf(name, sizeof(name),
"b43legacy-%s::rx", wiphy_name(hw->wiphy));
b43legacy_register_led(dev, &dev->led_rx, name,
ieee80211_get_rx_led_name(hw),
led_index, activelow);
break;
case B43legacy_LED_RADIO_ALL:
case B43legacy_LED_RADIO_A:
case B43legacy_LED_RADIO_B:
case B43legacy_LED_MODE_BG:
snprintf(name, sizeof(name),
"b43legacy-%s::radio", wiphy_name(hw->wiphy));
b43legacy_register_led(dev, &dev->led_radio, name,
ieee80211_get_radio_led_name(hw),
led_index, activelow);
/* Sync the RF-kill LED state with radio and switch states. */
if (dev->phy.radio_on && b43legacy_is_hw_radio_enabled(dev))
b43legacy_led_turn_on(dev, led_index, activelow);
break;
case B43legacy_LED_WEIRD:
case B43legacy_LED_ASSOC:
snprintf(name, sizeof(name),
"b43legacy-%s::assoc", wiphy_name(hw->wiphy));
b43legacy_register_led(dev, &dev->led_assoc, name,
ieee80211_get_assoc_led_name(hw),
led_index, activelow);
break;
default:
b43legacywarn(dev->wl, "LEDs: Unknown behaviour 0x%02X\n",
behaviour);
break;
}
}
void b43legacy_leds_init(struct b43legacy_wldev *dev)
{
struct ssb_bus *bus = dev->dev->bus;
u8 sprom[4];
int i;
enum b43legacy_led_behaviour behaviour;
bool activelow;
sprom[0] = bus->sprom.gpio0;
sprom[1] = bus->sprom.gpio1;
sprom[2] = bus->sprom.gpio2;
sprom[3] = bus->sprom.gpio3;
for (i = 0; i < 4; i++) {
if (sprom[i] == 0xFF) {
/* There is no LED information in the SPROM
* for this LED. Hardcode it here. */
activelow = false;
switch (i) {
case 0:
behaviour = B43legacy_LED_ACTIVITY;
activelow = true;
if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
behaviour = B43legacy_LED_RADIO_ALL;
break;
case 1:
behaviour = B43legacy_LED_RADIO_B;
if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
behaviour = B43legacy_LED_ASSOC;
break;
case 2:
behaviour = B43legacy_LED_RADIO_A;
break;
case 3:
behaviour = B43legacy_LED_OFF;
break;
default:
B43legacy_WARN_ON(1);
return;
}
} else {
behaviour = sprom[i] & B43legacy_LED_BEHAVIOUR;
activelow = !!(sprom[i] & B43legacy_LED_ACTIVELOW);
}
b43legacy_map_led(dev, i, behaviour, activelow);
}
}
void b43legacy_leds_exit(struct b43legacy_wldev *dev)
{
b43legacy_unregister_led(&dev->led_tx);
b43legacy_unregister_led(&dev->led_rx);
b43legacy_unregister_led(&dev->led_assoc);
b43legacy_unregister_led(&dev->led_radio);
}
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