commit 7396faf4f3228b88c6c815c7a93081b456716d5f
author Ivo van Doorn <ivdoorn@gmail.com> Sat Dec 20 10:55:57 2008 +0100
committer John W. Linville <linville@tuxdriver.com> Thu Jan 29 15:58:37 2009 -0500
tree 86eeb5aa85d0300cbfea04ac6d2e14ce7528c04b
parent a07dbea210e146aedf8929cdabe082b58696260c

rt2x00: Add RFKILL support to rt2500usb and rt73usb

Some very rare Ralink USB hardware exists which features
the RFKILL switch on the USB stick.
This patch adds the EEPROM check function to see if RFKILL
is supported and the polling function to rt2500usb and
rt73usb in order to support RFKILL for that hardware.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2500usb.c

diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c
index 557fcf2..01e5584 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/rt2x00/rt2500usb.c
@@ -280,6 +280,18 @@
 };
 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 
+#ifdef CONFIG_RT2X00_LIB_RFKILL
+static int rt2500usb_rfkill_poll(struct rt2x00_dev *rt2x00dev)
+{
+	u16 reg;
+
+	rt2500usb_register_read(rt2x00dev, MAC_CSR19, &reg);
+	return rt2x00_get_field32(reg, MAC_CSR19_BIT7);
+}
+#else
+#define rt2500usb_rfkill_poll	NULL
+#endif /* CONFIG_RT2X00_LIB_RFKILL */
+
 #ifdef CONFIG_RT2X00_LIB_LEDS
 static void rt2500usb_brightness_set(struct led_classdev *led_cdev,
 				     enum led_brightness brightness)
@@ -1597,6 +1609,14 @@
 #endif /* CONFIG_RT2X00_LIB_LEDS */
 
 	/*
+	 * Detect if this device has an hardware controlled radio.
+	 */
+#ifdef CONFIG_RT2X00_LIB_RFKILL
+	if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_HARDWARE_RADIO))
+		__set_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags);
+#endif /* CONFIG_RT2X00_LIB_RFKILL */
+
+	/*
 	 * Check if the BBP tuning should be disabled.
 	 */
 	rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
@@ -1902,6 +1922,7 @@
 	.uninitialize		= rt2x00usb_uninitialize,
 	.clear_entry		= rt2x00usb_clear_entry,
 	.set_device_state	= rt2500usb_set_device_state,
+	.rfkill_poll		= rt2500usb_rfkill_poll,
 	.link_stats		= rt2500usb_link_stats,
 	.reset_tuner		= rt2500usb_reset_tuner,
 	.link_tuner		= rt2500usb_link_tuner,