Release 4.7 drivers/net/wireless/ath/ath5k/rfkill.c
  
  
/*
 * RFKILL support for ath5k
 *
 * Copyright (c) 2009 Tobias Doerffel <tobias.doerffel@gmail.com>
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
 *    redistribution must be conditioned upon including a substantially
 *    similar Disclaimer requirement for further binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGES.
 */
#include "ath5k.h"
static inline void ath5k_rfkill_disable(struct ath5k_hw *ah)
{
	ATH5K_DBG(ah, ATH5K_DEBUG_ANY, "rfkill disable (gpio:%d polarity:%d)\n",
		ah->rf_kill.gpio, ah->rf_kill.polarity);
	ath5k_hw_set_gpio_output(ah, ah->rf_kill.gpio);
	ath5k_hw_set_gpio(ah, ah->rf_kill.gpio, !ah->rf_kill.polarity);
}
Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| tobias doerffel | tobias doerffel | 54 | 87.10% | 1 | 50.00% | 
| pavel roskin | pavel roskin | 8 | 12.90% | 1 | 50.00% | 
 | Total | 62 | 100.00% | 2 | 100.00% | 
static inline void ath5k_rfkill_enable(struct ath5k_hw *ah)
{
	ATH5K_DBG(ah, ATH5K_DEBUG_ANY, "rfkill enable (gpio:%d polarity:%d)\n",
		ah->rf_kill.gpio, ah->rf_kill.polarity);
	ath5k_hw_set_gpio_output(ah, ah->rf_kill.gpio);
	ath5k_hw_set_gpio(ah, ah->rf_kill.gpio, ah->rf_kill.polarity);
}
Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| tobias doerffel | tobias doerffel | 53 | 86.89% | 1 | 50.00% | 
| pavel roskin | pavel roskin | 8 | 13.11% | 1 | 50.00% | 
 | Total | 61 | 100.00% | 2 | 100.00% | 
static inline void ath5k_rfkill_set_intr(struct ath5k_hw *ah, bool enable)
{
	u32 curval;
	ath5k_hw_set_gpio_input(ah, ah->rf_kill.gpio);
	curval = ath5k_hw_get_gpio(ah, ah->rf_kill.gpio);
	ath5k_hw_set_gpio_intr(ah, ah->rf_kill.gpio, enable ?
					!!curval : !curval);
}
Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| tobias doerffel | tobias doerffel | 51 | 82.26% | 1 | 33.33% | 
| bob copeland | bob copeland | 6 | 9.68% | 1 | 33.33% | 
| pavel roskin | pavel roskin | 5 | 8.06% | 1 | 33.33% | 
 | Total | 62 | 100.00% | 3 | 100.00% | 
static bool
ath5k_is_rfkill_set(struct ath5k_hw *ah)
{
	/* configuring GPIO for input for some reason disables rfkill */
	/*ath5k_hw_set_gpio_input(ah, ah->rf_kill.gpio);*/
	return ath5k_hw_get_gpio(ah, ah->rf_kill.gpio) ==
							ah->rf_kill.polarity;
}
Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| tobias doerffel | tobias doerffel | 26 | 83.87% | 1 | 50.00% | 
| pavel roskin | pavel roskin | 5 | 16.13% | 1 | 50.00% | 
 | Total | 31 | 100.00% | 2 | 100.00% | 
static void
ath5k_tasklet_rfkill_toggle(unsigned long data)
{
	struct ath5k_hw *ah = (void *)data;
	bool blocked;
	blocked = ath5k_is_rfkill_set(ah);
	wiphy_rfkill_set_hw_state(ah->hw->wiphy, blocked);
}
Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| tobias doerffel | tobias doerffel | 38 | 90.48% | 1 | 50.00% | 
| pavel roskin | pavel roskin | 4 | 9.52% | 1 | 50.00% | 
 | Total | 42 | 100.00% | 2 | 100.00% | 
void
ath5k_rfkill_hw_start(struct ath5k_hw *ah)
{
	/* read rfkill GPIO configuration from EEPROM header */
	ah->rf_kill.gpio = ah->ah_capabilities.cap_eeprom.ee_rfkill_pin;
	ah->rf_kill.polarity = ah->ah_capabilities.cap_eeprom.ee_rfkill_pol;
	tasklet_init(&ah->rf_kill.toggleq, ath5k_tasklet_rfkill_toggle,
		(unsigned long)ah);
	ath5k_rfkill_disable(ah);
	/* enable interrupt for rfkill switch */
	if (AR5K_EEPROM_HDR_RFKILL(ah->ah_capabilities.cap_eeprom.ee_header))
		ath5k_rfkill_set_intr(ah, true);
}
Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| tobias doerffel | tobias doerffel | 77 | 92.77% | 1 | 50.00% | 
| pavel roskin | pavel roskin | 6 | 7.23% | 1 | 50.00% | 
 | Total | 83 | 100.00% | 2 | 100.00% | 
void
ath5k_rfkill_hw_stop(struct ath5k_hw *ah)
{
	/* disable interrupt for rfkill switch */
	if (AR5K_EEPROM_HDR_RFKILL(ah->ah_capabilities.cap_eeprom.ee_header))
		ath5k_rfkill_set_intr(ah, false);
	tasklet_kill(&ah->rf_kill.toggleq);
	/* enable RFKILL when stopping HW so Wifi LED is turned off */
	ath5k_rfkill_enable(ah);
}
Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| tobias doerffel | tobias doerffel | 44 | 93.62% | 1 | 50.00% | 
| pavel roskin | pavel roskin | 3 | 6.38% | 1 | 50.00% | 
 | Total | 47 | 100.00% | 2 | 100.00% | 
Overall Contributors
 | Person | Tokens | Prop | Commits | CommitProp | 
| tobias doerffel | tobias doerffel | 346 | 88.27% | 1 | 25.00% | 
| pavel roskin | pavel roskin | 40 | 10.20% | 2 | 50.00% | 
| bob copeland | bob copeland | 6 | 1.53% | 1 | 25.00% | 
 | Total | 392 | 100.00% | 4 | 100.00% | 
  
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