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Diffstat (limited to 'gpxe/src/drivers/net/ath5k/ath5k_rfkill.c')
-rw-r--r--gpxe/src/drivers/net/ath5k/ath5k_rfkill.c107
1 files changed, 107 insertions, 0 deletions
diff --git a/gpxe/src/drivers/net/ath5k/ath5k_rfkill.c b/gpxe/src/drivers/net/ath5k/ath5k_rfkill.c
new file mode 100644
index 00000000..9d0a2ff1
--- /dev/null
+++ b/gpxe/src/drivers/net/ath5k/ath5k_rfkill.c
@@ -0,0 +1,107 @@
+/*
+ * RFKILL support for ath5k
+ *
+ * Copyright (c) 2009 Tobias Doerffel <tobias.doerffel@gmail.com>
+ * Lightly modified for gPXE, Sep 2008 by Joshua Oreman <oremanj@rwcr.net>
+ *
+ * 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.
+ */
+
+FILE_LICENCE ( MIT );
+
+#include "base.h"
+
+
+static inline void ath5k_rfkill_disable(struct ath5k_softc *sc)
+{
+ DBG("ath5k: rfkill disable (gpio:%d polarity:%d)\n",
+ sc->rf_kill.gpio, sc->rf_kill.polarity);
+ ath5k_hw_set_gpio_output(sc->ah, sc->rf_kill.gpio);
+ ath5k_hw_set_gpio(sc->ah, sc->rf_kill.gpio, !sc->rf_kill.polarity);
+}
+
+
+static inline void ath5k_rfkill_enable(struct ath5k_softc *sc)
+{
+ DBG("ath5k: rfkill enable (gpio:%d polarity:%d)\n",
+ sc->rf_kill.gpio, sc->rf_kill.polarity);
+ ath5k_hw_set_gpio_output(sc->ah, sc->rf_kill.gpio);
+ ath5k_hw_set_gpio(sc->ah, sc->rf_kill.gpio, sc->rf_kill.polarity);
+}
+
+static inline void ath5k_rfkill_set_intr(struct ath5k_softc *sc, int enable)
+{
+ struct ath5k_hw *ah = sc->ah;
+ u32 curval;
+
+ ath5k_hw_set_gpio_input(ah, sc->rf_kill.gpio);
+ curval = ath5k_hw_get_gpio(ah, sc->rf_kill.gpio);
+ ath5k_hw_set_gpio_intr(ah, sc->rf_kill.gpio, enable ?
+ !!curval : !curval);
+}
+
+static int __unused
+ath5k_is_rfkill_set(struct ath5k_softc *sc)
+{
+ /* configuring GPIO for input for some reason disables rfkill */
+ /*ath5k_hw_set_gpio_input(sc->ah, sc->rf_kill.gpio);*/
+ return (ath5k_hw_get_gpio(sc->ah, sc->rf_kill.gpio) ==
+ sc->rf_kill.polarity);
+}
+
+void
+ath5k_rfkill_hw_start(struct ath5k_hw *ah)
+{
+ struct ath5k_softc *sc = ah->ah_sc;
+
+ /* read rfkill GPIO configuration from EEPROM header */
+ sc->rf_kill.gpio = ah->ah_capabilities.cap_eeprom.ee_rfkill_pin;
+ sc->rf_kill.polarity = ah->ah_capabilities.cap_eeprom.ee_rfkill_pol;
+
+ ath5k_rfkill_disable(sc);
+
+ /* enable interrupt for rfkill switch */
+ if (AR5K_EEPROM_HDR_RFKILL(ah->ah_capabilities.cap_eeprom.ee_header))
+ ath5k_rfkill_set_intr(sc, 1);
+}
+
+
+void
+ath5k_rfkill_hw_stop(struct ath5k_hw *ah)
+{
+ struct ath5k_softc *sc = ah->ah_sc;
+
+ /* disable interrupt for rfkill switch */
+ if (AR5K_EEPROM_HDR_RFKILL(ah->ah_capabilities.cap_eeprom.ee_header))
+ ath5k_rfkill_set_intr(sc, 0);
+
+ /* enable RFKILL when stopping HW so Wifi LED is turned off */
+ ath5k_rfkill_enable(sc);
+}