[RT2x00]: add driver for Ralink wireless hardware

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 165 insertions, 0 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00config.c b/drivers/net/wireless/rt2x00/rt2x00config.c
new file mode 100644
index 000000000000..de890a17d8fd
--- /dev/null
+++ b/drivers/net/wireless/rt2x00/rt2x00config.c
@@ -0,0 +1,165 @@
+/*
+	Copyright (C) 2004 - 2007 rt2x00 SourceForge Project
+	<http://rt2x00.serialmonkey.com>
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the
+	Free Software Foundation, Inc.,
+	59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*
+	Module: rt2x00lib
+	Abstract: rt2x00 generic configuration routines.
+ */
+
+/*
+ * Set enviroment defines for rt2x00.h
+ */
+#define DRV_NAME "rt2x00lib"
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include "rt2x00.h"
+#include "rt2x00lib.h"
+
+void rt2x00lib_config_mac_addr(struct rt2x00_dev *rt2x00dev, u8 *mac)
+{
+	if (mac)
+		rt2x00dev->ops->lib->config_mac_addr(rt2x00dev, mac);
+}
+
+void rt2x00lib_config_bssid(struct rt2x00_dev *rt2x00dev, u8 *bssid)
+{
+	if (bssid)
+		rt2x00dev->ops->lib->config_bssid(rt2x00dev, bssid);
+}
+
+void rt2x00lib_config_packet_filter(struct rt2x00_dev *rt2x00dev, int filter)
+{
+	/*
+	 * Only configure the device when something has changed,
+	 * or if we are in RESUME state in which case all configuration
+	 * will be forced upon the device.
+	 */
+	if (!test_bit(INTERFACE_RESUME, &rt2x00dev->flags) &&
+	    !test_bit(PACKET_FILTER_PENDING, &rt2x00dev->flags))
+		return;
+
+	/*
+	 * Write configuration to device and clear the update flag.
+	 */
+	rt2x00dev->ops->lib->config_packet_filter(rt2x00dev, filter);
+	__clear_bit(PACKET_FILTER_PENDING, &rt2x00dev->flags);
+}
+
+void rt2x00lib_config_type(struct rt2x00_dev *rt2x00dev, int type)
+{
+	struct interface *intf = &rt2x00dev->interface;
+
+	/*
+	 * Fallback when a invalid interface is attempted to
+	 * be configured. If a monitor interface is present,
+	 * we are going configure that, otherwise exit.
+	 */
+	if (type == INVALID_INTERFACE) {
+		if (is_monitor_present(intf))
+			type = IEEE80211_IF_TYPE_MNTR;
+		else
+			return;
+	}
+
+	/*
+	 * Only configure the device when something has changed,
+	 * or if we are in RESUME state in which case all configuration
+	 * will be forced upon the device.
+	 */
+	if (!test_bit(INTERFACE_RESUME, &rt2x00dev->flags) &&
+	    (!(is_interface_present(intf) ^
+	       test_bit(INTERFACE_ENABLED, &rt2x00dev->flags)) &&
+	     !(is_monitor_present(intf) ^
+	       test_bit(INTERFACE_ENABLED_MONITOR, &rt2x00dev->flags))))
+		return;
+
+	/*
+	 * Configure device.
+	 */
+	rt2x00dev->ops->lib->config_type(rt2x00dev, type);
+
+	/*
+	 * Update the configuration flags.
+	 */
+	if (type != IEEE80211_IF_TYPE_MNTR) {
+		if (is_interface_present(intf))
+			__set_bit(INTERFACE_ENABLED, &rt2x00dev->flags);
+		else
+			__clear_bit(INTERFACE_ENABLED, &rt2x00dev->flags);
+	} else {
+		if (is_monitor_present(intf))
+			__set_bit(INTERFACE_ENABLED_MONITOR, &rt2x00dev->flags);
+		else
+			__clear_bit(INTERFACE_ENABLED_MONITOR,
+				    &rt2x00dev->flags);
+	}
+}
+
+void rt2x00lib_config(struct rt2x00_dev *rt2x00dev, struct ieee80211_conf *conf)
+{
+	int flags = 0;
+
+	/*
+	 * If we are in RESUME state we should
+	 * force all configuration options.
+	 */
+	if (test_bit(INTERFACE_RESUME, &rt2x00dev->flags)) {
+		flags = CONFIG_UPDATE_ALL;
+		goto config;
+	}
+
+	/*
+	 * Check which configuration options have been
+	 * updated and should be send to the device.
+	 */
+	if (rt2x00dev->rx_status.phymode != conf->phymode)
+		flags |= CONFIG_UPDATE_PHYMODE;
+	if (rt2x00dev->rx_status.channel != conf->channel)
+		flags |= CONFIG_UPDATE_CHANNEL;
+	if (rt2x00dev->tx_power != conf->power_level)
+		flags |= CONFIG_UPDATE_TXPOWER;
+	if (rt2x00dev->rx_status.antenna == conf->antenna_sel_rx)
+		flags |= CONFIG_UPDATE_ANTENNA;
+
+	/*
+	 * The following configuration options are never
+	 * stored anywhere and will always be updated.
+	 */
+	flags |= CONFIG_UPDATE_SLOT_TIME;
+	flags |= CONFIG_UPDATE_BEACON_INT;
+
+config:
+	rt2x00dev->ops->lib->config(rt2x00dev, flags, conf);
+
+	/*
+	 * Some configuration changes affect the link quality
+	 * which means we need to reset the link tuner.
+	 */
+	if (flags & (CONFIG_UPDATE_CHANNEL | CONFIG_UPDATE_ANTENNA))
+		rt2x00lib_reset_link_tuner(rt2x00dev);
+
+	rt2x00dev->rx_status.phymode = conf->phymode;
+	rt2x00dev->rx_status.freq = conf->freq;
+	rt2x00dev->rx_status.channel = conf->channel;
+	rt2x00dev->tx_power = conf->power_level;
+	rt2x00dev->rx_status.antenna = conf->antenna_sel_rx;
+}