[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;
+}