rt2x00: rt2800 - Make probe_hw function common between PCI and USB.

Refactor the probe_hw code so that more code can be shared between
rt2800pci and rt2800usb.
Signed-off-by: NGertjan van Wingerde <gwingerde@gmail.com>
Acked-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2800lib.c

@@ -4392,13 +4392,18 @@ void rt2800_read_eeprom_efuse(struct rt2x00_dev *rt2x00dev)
 }
 EXPORT_SYMBOL_GPL(rt2800_read_eeprom_efuse);
 
-int rt2800_validate_eeprom(struct rt2x00_dev *rt2x00dev)
+static int rt2800_validate_eeprom(struct rt2x00_dev *rt2x00dev)
 {
 	struct rt2800_drv_data *drv_data = rt2x00dev->drv_data;
 	u16 word;
 	u8 *mac;
 	u8 default_lna_gain;
 
+	/*
+	 * Read the EEPROM.
+	 */
+	rt2800_read_eeprom(rt2x00dev);
+
 	/*
 	 * Start validation of the data that has been read.
 	 */
@@ -4521,9 +4526,8 @@ int rt2800_validate_eeprom(struct rt2x00_dev *rt2x00dev)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(rt2800_validate_eeprom);
 
-int rt2800_init_eeprom(struct rt2x00_dev *rt2x00dev)
+static int rt2800_init_eeprom(struct rt2x00_dev *rt2x00dev)
 {
 	u32 reg;
 	u16 value;
@@ -4681,7 +4685,6 @@ int rt2800_init_eeprom(struct rt2x00_dev *rt2x00dev)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(rt2800_init_eeprom);
 
 /*
  * RF value list for rt28xx
@@ -4824,7 +4827,7 @@ static const struct rf_channel rf_vals_3x[] = {
 	{173, 0x61, 0, 9},
 };
 
-int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
+static int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
 {
 	struct hw_mode_spec *spec = &rt2x00dev->spec;
 	struct channel_info *info;
@@ -5000,7 +5003,72 @@ int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(rt2800_probe_hw_mode);
+
+int rt2800_probe_hw(struct rt2x00_dev *rt2x00dev)
+{
+	int retval;
+	u32 reg;
+
+	/*
+	 * Allocate eeprom data.
+	 */
+	retval = rt2800_validate_eeprom(rt2x00dev);
+	if (retval)
+		return retval;
+
+	retval = rt2800_init_eeprom(rt2x00dev);
+	if (retval)
+		return retval;
+
+	/*
+	 * Enable rfkill polling by setting GPIO direction of the
+	 * rfkill switch GPIO pin correctly.
+	 */
+	rt2800_register_read(rt2x00dev, GPIO_CTRL, &reg);
+	rt2x00_set_field32(&reg, GPIO_CTRL_DIR2, 1);
+	rt2800_register_write(rt2x00dev, GPIO_CTRL, reg);
+
+	/*
+	 * Initialize hw specifications.
+	 */
+	retval = rt2800_probe_hw_mode(rt2x00dev);
+	if (retval)
+		return retval;
+
+	/*
+	 * Set device capabilities.
+	 */
+	__set_bit(CAPABILITY_CONTROL_FILTERS, &rt2x00dev->cap_flags);
+	__set_bit(CAPABILITY_CONTROL_FILTER_PSPOLL, &rt2x00dev->cap_flags);
+	if (!rt2x00_is_usb(rt2x00dev))
+		__set_bit(CAPABILITY_PRE_TBTT_INTERRUPT, &rt2x00dev->cap_flags);
+
+	/*
+	 * Set device requirements.
+	 */
+	if (!rt2x00_is_soc(rt2x00dev))
+		__set_bit(REQUIRE_FIRMWARE, &rt2x00dev->cap_flags);
+	__set_bit(REQUIRE_L2PAD, &rt2x00dev->cap_flags);
+	__set_bit(REQUIRE_TXSTATUS_FIFO, &rt2x00dev->cap_flags);
+	if (!rt2800_hwcrypt_disabled(rt2x00dev))
+		__set_bit(CAPABILITY_HW_CRYPTO, &rt2x00dev->cap_flags);
+	__set_bit(CAPABILITY_LINK_TUNING, &rt2x00dev->cap_flags);
+	__set_bit(REQUIRE_HT_TX_DESC, &rt2x00dev->cap_flags);
+	if (rt2x00_is_usb(rt2x00dev))
+		__set_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags);
+	else {
+		__set_bit(REQUIRE_DMA, &rt2x00dev->cap_flags);
+		__set_bit(REQUIRE_TASKLET_CONTEXT, &rt2x00dev->cap_flags);
+	}
+
+	/*
+	 * Set the rssi offset.
+	 */
+	rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(rt2800_probe_hw);
 
 /*
  * IEEE80211 stack callback functions.

drivers/net/wireless/rt2x00/rt2800lib.h

@@ -43,6 +43,9 @@ struct rt2800_ops {
 			    const unsigned int offset,
 			    const struct rt2x00_field32 field, u32 *reg);
 
+	void (*read_eeprom)(struct rt2x00_dev *rt2x00dev);
+	bool (*hwcrypt_disabled)(struct rt2x00_dev *rt2x00dev);
+
 	int (*drv_write_firmware)(struct rt2x00_dev *rt2x00dev,
 				  const u8 *data, const size_t len);
 	int (*drv_init_registers)(struct rt2x00_dev *rt2x00dev);
@@ -114,6 +117,20 @@ static inline int rt2800_regbusy_read(struct rt2x00_dev *rt2x00dev,
 	return rt2800ops->regbusy_read(rt2x00dev, offset, field, reg);
 }
 
+static inline void rt2800_read_eeprom(struct rt2x00_dev *rt2x00dev)
+{
+	const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
+
+	rt2800ops->read_eeprom(rt2x00dev);
+}
+
+static inline bool rt2800_hwcrypt_disabled(struct rt2x00_dev *rt2x00dev)
+{
+	const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
+
+	return rt2800ops->hwcrypt_disabled(rt2x00dev);
+}
+
 static inline int rt2800_drv_write_firmware(struct rt2x00_dev *rt2x00dev,
 					    const u8 *data, const size_t len)
 {
@@ -191,9 +208,8 @@ void rt2800_disable_radio(struct rt2x00_dev *rt2x00dev);
 
 int rt2800_efuse_detect(struct rt2x00_dev *rt2x00dev);
 void rt2800_read_eeprom_efuse(struct rt2x00_dev *rt2x00dev);
-int rt2800_validate_eeprom(struct rt2x00_dev *rt2x00dev);
-int rt2800_init_eeprom(struct rt2x00_dev *rt2x00dev);
-int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev);
+
+int rt2800_probe_hw(struct rt2x00_dev *rt2x00dev);
 
 void rt2800_get_tkip_seq(struct ieee80211_hw *hw, u8 hw_key_idx, u32 *iv32,
 			 u16 *iv16);

drivers/net/wireless/rt2x00/rt2800pci.c

@@ -54,6 +54,11 @@ static bool modparam_nohwcrypt = false;
 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
 
+static bool rt2800pci_hwcrypt_disabled(struct rt2x00_dev *rt2x00dev)
+{
+	return modparam_nohwcrypt;
+}
+
 static void rt2800pci_mcu_status(struct rt2x00_dev *rt2x00dev, const u8 token)
 {
 	unsigned int i;
@@ -965,85 +970,14 @@ static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance)
 /*
  * Device probe functions.
  */
-static int rt2800pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
+static void rt2800pci_read_eeprom(struct rt2x00_dev *rt2x00dev)
 {
-	/*
-	 * Read EEPROM into buffer
-	 */
 	if (rt2x00_is_soc(rt2x00dev))
 		rt2800pci_read_eeprom_soc(rt2x00dev);
 	else if (rt2800pci_efuse_detect(rt2x00dev))
 		rt2800pci_read_eeprom_efuse(rt2x00dev);
 	else
 		rt2800pci_read_eeprom_pci(rt2x00dev);
-
-	return rt2800_validate_eeprom(rt2x00dev);
-}
-
-static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
-{
-	int retval;
-	u32 reg;
-
-	/*
-	 * Allocate eeprom data.
-	 */
-	retval = rt2800pci_validate_eeprom(rt2x00dev);
-	if (retval)
-		return retval;
-
-	retval = rt2800_init_eeprom(rt2x00dev);
-	if (retval)
-		return retval;
-
-	/*
-	 * Enable rfkill polling by setting GPIO direction of the
-	 * rfkill switch GPIO pin correctly.
-	 */
-	rt2x00pci_register_read(rt2x00dev, GPIO_CTRL, &reg);
-	rt2x00_set_field32(&reg, GPIO_CTRL_DIR2, 1);
-	rt2x00pci_register_write(rt2x00dev, GPIO_CTRL, reg);
-
-	/*
-	 * Initialize hw specifications.
-	 */
-	retval = rt2800_probe_hw_mode(rt2x00dev);
-	if (retval)
-		return retval;
-
-	/*
-	 * This device has multiple filters for control frames
-	 * and has a separate filter for PS Poll frames.
-	 */
-	__set_bit(CAPABILITY_CONTROL_FILTERS, &rt2x00dev->cap_flags);
-	__set_bit(CAPABILITY_CONTROL_FILTER_PSPOLL, &rt2x00dev->cap_flags);
-
-	/*
-	 * This device has a pre tbtt interrupt and thus fetches
-	 * a new beacon directly prior to transmission.
-	 */
-	__set_bit(CAPABILITY_PRE_TBTT_INTERRUPT, &rt2x00dev->cap_flags);
-
-	/*
-	 * This device requires firmware.
-	 */
-	if (!rt2x00_is_soc(rt2x00dev))
-		__set_bit(REQUIRE_FIRMWARE, &rt2x00dev->cap_flags);
-	__set_bit(REQUIRE_DMA, &rt2x00dev->cap_flags);
-	__set_bit(REQUIRE_L2PAD, &rt2x00dev->cap_flags);
-	__set_bit(REQUIRE_TXSTATUS_FIFO, &rt2x00dev->cap_flags);
-	__set_bit(REQUIRE_TASKLET_CONTEXT, &rt2x00dev->cap_flags);
-	if (!modparam_nohwcrypt)
-		__set_bit(CAPABILITY_HW_CRYPTO, &rt2x00dev->cap_flags);
-	__set_bit(CAPABILITY_LINK_TUNING, &rt2x00dev->cap_flags);
-	__set_bit(REQUIRE_HT_TX_DESC, &rt2x00dev->cap_flags);
-
-	/*
-	 * Set the rssi offset.
-	 */
-	rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
-
-	return 0;
 }
 
 static const struct ieee80211_ops rt2800pci_mac80211_ops = {
@@ -1081,6 +1015,8 @@ static const struct rt2800_ops rt2800pci_rt2800_ops = {
 	.register_multiread	= rt2x00pci_register_multiread,
 	.register_multiwrite	= rt2x00pci_register_multiwrite,
 	.regbusy_read		= rt2x00pci_regbusy_read,
+	.read_eeprom		= rt2800pci_read_eeprom,
+	.hwcrypt_disabled	= rt2800pci_hwcrypt_disabled,
 	.drv_write_firmware	= rt2800pci_write_firmware,
 	.drv_init_registers	= rt2800pci_init_registers,
 	.drv_get_txwi		= rt2800pci_get_txwi,
@@ -1093,7 +1029,7 @@ static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
 	.tbtt_tasklet		= rt2800pci_tbtt_tasklet,
 	.rxdone_tasklet		= rt2800pci_rxdone_tasklet,
 	.autowake_tasklet	= rt2800pci_autowake_tasklet,
-	.probe_hw		= rt2800pci_probe_hw,
+	.probe_hw		= rt2800_probe_hw,
 	.get_firmware_name	= rt2800pci_get_firmware_name,
 	.check_firmware		= rt2800_check_firmware,
 	.load_firmware		= rt2800_load_firmware,

drivers/net/wireless/rt2x00/rt2800usb.c

@@ -49,6 +49,11 @@ static bool modparam_nohwcrypt;
 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
 
+static bool rt2800usb_hwcrypt_disabled(struct rt2x00_dev *rt2x00dev)
+{
+	return modparam_nohwcrypt;
+}
+
 /*
  * Queue handlers.
  */
@@ -730,73 +735,27 @@ static void rt2800usb_fill_rxdone(struct queue_entry *entry,
 /*
  * Device probe functions.
  */
-static int rt2800usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
+static void rt2800usb_read_eeprom(struct rt2x00_dev *rt2x00dev)
 {
 	if (rt2800_efuse_detect(rt2x00dev))
 		rt2800_read_eeprom_efuse(rt2x00dev);
 	else
 		rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom,
 				      EEPROM_SIZE);
-
-	return rt2800_validate_eeprom(rt2x00dev);
 }
 
 static int rt2800usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 {
 	int retval;
-	u32 reg;
 
-	/*
-	 * Allocate eeprom data.
-	 */
-	retval = rt2800usb_validate_eeprom(rt2x00dev);
+	retval = rt2800_probe_hw(rt2x00dev);
 	if (retval)
 		return retval;
 
-	retval = rt2800_init_eeprom(rt2x00dev);
-	if (retval)
-		return retval;
-
-	/*
-	 * Enable rfkill polling by setting GPIO direction of the
-	 * rfkill switch GPIO pin correctly.
-	 */
-	rt2x00usb_register_read(rt2x00dev, GPIO_CTRL, &reg);
-	rt2x00_set_field32(&reg, GPIO_CTRL_DIR2, 1);
-	rt2x00usb_register_write(rt2x00dev, GPIO_CTRL, reg);
-
-	/*
-	 * Initialize hw specifications.
-	 */
-	retval = rt2800_probe_hw_mode(rt2x00dev);
-	if (retval)
-		return retval;
-
-	/*
-	 * This device has multiple filters for control frames
-	 * and has a separate filter for PS Poll frames.
-	 */
-	__set_bit(CAPABILITY_CONTROL_FILTERS, &rt2x00dev->cap_flags);
-	__set_bit(CAPABILITY_CONTROL_FILTER_PSPOLL, &rt2x00dev->cap_flags);
-
-	/*
-	 * This device requires firmware.
-	 */
-	__set_bit(REQUIRE_FIRMWARE, &rt2x00dev->cap_flags);
-	__set_bit(REQUIRE_L2PAD, &rt2x00dev->cap_flags);
-	if (!modparam_nohwcrypt)
-		__set_bit(CAPABILITY_HW_CRYPTO, &rt2x00dev->cap_flags);
-	__set_bit(CAPABILITY_LINK_TUNING, &rt2x00dev->cap_flags);
-	__set_bit(REQUIRE_HT_TX_DESC, &rt2x00dev->cap_flags);
-	__set_bit(REQUIRE_TXSTATUS_FIFO, &rt2x00dev->cap_flags);
-	__set_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags);
-
-	rt2x00dev->txstatus_timer.function = rt2800usb_tx_sta_fifo_timeout,
-
 	/*
-	 * Set the rssi offset.
+	 * Set txstatus timer function.
 	 */
-	rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
+	rt2x00dev->txstatus_timer.function = rt2800usb_tx_sta_fifo_timeout;
 
 	/*
 	 * Overwrite TX done handler
@@ -842,6 +801,8 @@ static const struct rt2800_ops rt2800usb_rt2800_ops = {
 	.register_multiread	= rt2x00usb_register_multiread,
 	.register_multiwrite	= rt2x00usb_register_multiwrite,
 	.regbusy_read		= rt2x00usb_regbusy_read,
+	.read_eeprom		= rt2800usb_read_eeprom,
+	.hwcrypt_disabled	= rt2800usb_hwcrypt_disabled,
 	.drv_write_firmware	= rt2800usb_write_firmware,
 	.drv_init_registers	= rt2800usb_init_registers,
 	.drv_get_txwi		= rt2800usb_get_txwi,