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,
diff --git a/drivers/net/wireless/rt2x00/rt2500usb.h b/drivers/net/wireless/rt2x00/rt2500usb.h
index 4347dfd..e1f714e 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.h
+++ b/drivers/net/wireless/rt2x00/rt2500usb.h
@@ -189,6 +189,14 @@
  * MAC_CSR19: GPIO control register.
  */
 #define MAC_CSR19			0x0426
+#define MAC_CSR19_BIT0			FIELD32(0x0001)
+#define MAC_CSR19_BIT1			FIELD32(0x0002)
+#define MAC_CSR19_BIT2			FIELD32(0x0004)
+#define MAC_CSR19_BIT3			FIELD32(0x0008)
+#define MAC_CSR19_BIT4			FIELD32(0x0010)
+#define MAC_CSR19_BIT5			FIELD32(0x0020)
+#define MAC_CSR19_BIT6			FIELD32(0x0040)
+#define MAC_CSR19_BIT7			FIELD32(0x0080)
 
 /*
  * MAC_CSR20: LED control register.
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index e99bcac..c265810 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -186,6 +186,18 @@
 };
 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 
+#ifdef CONFIG_RT2X00_LIB_RFKILL
+static int rt73usb_rfkill_poll(struct rt2x00_dev *rt2x00dev)
+{
+	u32 reg;
+
+	rt2x00usb_register_read(rt2x00dev, MAC_CSR13, &reg);
+	return rt2x00_get_field32(reg, MAC_CSR13_BIT7);
+}
+#else
+#define rt73usb_rfkill_poll	NULL
+#endif /* CONFIG_RT2X00_LIB_RFKILL */
+
 #ifdef CONFIG_RT2X00_LIB_LEDS
 static void rt73usb_brightness_set(struct led_classdev *led_cdev,
 				   enum led_brightness brightness)
@@ -1853,6 +1865,14 @@
 		__set_bit(CONFIG_FRAME_TYPE, &rt2x00dev->flags);
 
 	/*
+	 * 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 */
+
+	/*
 	 * Read frequency offset.
 	 */
 	rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &eeprom);
@@ -2257,6 +2277,7 @@
 	.uninitialize		= rt2x00usb_uninitialize,
 	.clear_entry		= rt2x00usb_clear_entry,
 	.set_device_state	= rt73usb_set_device_state,
+	.rfkill_poll		= rt73usb_rfkill_poll,
 	.link_stats		= rt73usb_link_stats,
 	.reset_tuner		= rt73usb_reset_tuner,
 	.link_tuner		= rt73usb_link_tuner,
diff --git a/drivers/net/wireless/rt2x00/rt73usb.h b/drivers/net/wireless/rt2x00/rt73usb.h
index 46e1405..204bbd5 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.h
+++ b/drivers/net/wireless/rt2x00/rt73usb.h
@@ -267,6 +267,19 @@
  * MAC_CSR13: GPIO.
  */
 #define MAC_CSR13			0x3034
+#define MAC_CSR13_BIT0			FIELD32(0x00000001)
+#define MAC_CSR13_BIT1			FIELD32(0x00000002)
+#define MAC_CSR13_BIT2			FIELD32(0x00000004)
+#define MAC_CSR13_BIT3			FIELD32(0x00000008)
+#define MAC_CSR13_BIT4			FIELD32(0x00000010)
+#define MAC_CSR13_BIT5			FIELD32(0x00000020)
+#define MAC_CSR13_BIT6			FIELD32(0x00000040)
+#define MAC_CSR13_BIT7			FIELD32(0x00000080)
+#define MAC_CSR13_BIT8			FIELD32(0x00000100)
+#define MAC_CSR13_BIT9			FIELD32(0x00000200)
+#define MAC_CSR13_BIT10			FIELD32(0x00000400)
+#define MAC_CSR13_BIT11			FIELD32(0x00000800)
+#define MAC_CSR13_BIT12			FIELD32(0x00001000)
 
 /*
  * MAC_CSR14: LED control register.