The following patch enables txpower setting for hostap driver and restores txpower after card resets. Signed-off-by: Vasilis Tsiligiannis <acinonyxs@yahoo.gr>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10656 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 160 insertions, 0 deletions

diff --git a/target/linux/generic-2.6/patches-2.6.24/903-hostap_txpower.patch b/target/linux/generic-2.6/patches-2.6.24/903-hostap_txpower.patch
new file mode 100644
index 000000000..6f82cdb03
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.24/903-hostap_txpower.patch
@@ -0,0 +1,160 @@
+diff -Nur linux-2.6.17/drivers/net/wireless/hostap/hostap_ap.c linux-2.6.17-patched/drivers/net/wireless/hostap/hostap_ap.c
+--- linux-2.6.17/drivers/net/wireless/hostap/hostap_ap.c	2006-06-18 04:49:35.000000000 +0300
++++ linux-2.6.17-patched/drivers/net/wireless/hostap/hostap_ap.c	2006-12-10 19:13:33.000000000 +0200
+@@ -2345,13 +2345,13 @@
+ 		addr[count].sa_family = ARPHRD_ETHER;
+ 		memcpy(addr[count].sa_data, sta->addr, ETH_ALEN);
+ 		if (sta->last_rx_silence == 0)
+-			qual[count].qual = sta->last_rx_signal < 27 ?
+-				0 : (sta->last_rx_signal - 27) * 92 / 127;
++                        qual[count].qual = (sta->last_rx_signal - 156) == 0 ?
++                                0 : (sta->last_rx_signal - 156) * 92 / 64;
+ 		else
+-			qual[count].qual = sta->last_rx_signal -
+-				sta->last_rx_silence - 35;
+-		qual[count].level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal);
+-		qual[count].noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence);
++                        qual[count].qual = (sta->last_rx_signal -
++                                sta->last_rx_silence) * 92 / 64;
++                qual[count].level = sta->last_rx_signal;
++                qual[count].noise = sta->last_rx_silence;
+ 		qual[count].updated = sta->last_rx_updated;
+ 
+ 		sta->last_rx_updated = IW_QUAL_DBM;
+@@ -2416,13 +2416,13 @@
+ 		memset(&iwe, 0, sizeof(iwe));
+ 		iwe.cmd = IWEVQUAL;
+ 		if (sta->last_rx_silence == 0)
+-			iwe.u.qual.qual = sta->last_rx_signal < 27 ?
+-				0 : (sta->last_rx_signal - 27) * 92 / 127;
++	                iwe.u.qual.qual = (sta->last_rx_signal -156) == 0 ?
++	                        0 : (sta->last_rx_signal - 156) * 92 / 64;
+ 		else
+-			iwe.u.qual.qual = sta->last_rx_signal -
+-				sta->last_rx_silence - 35;
+-		iwe.u.qual.level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal);
+-		iwe.u.qual.noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence);
++                        iwe.u.qual.qual = (sta->last_rx_signal -
++                                sta->last_rx_silence) * 92 / 64;
++                iwe.u.qual.level = sta->last_rx_signal;
++                iwe.u.qual.noise = sta->last_rx_silence;
+ 		iwe.u.qual.updated = sta->last_rx_updated;
+ 		iwe.len = IW_EV_QUAL_LEN;
+ 		current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+diff -Nur linux-2.6.17/drivers/net/wireless/hostap/hostap_config.h linux-2.6.17-patched/drivers/net/wireless/hostap/hostap_config.h
+--- linux-2.6.17/drivers/net/wireless/hostap/hostap_config.h	2006-06-18 04:49:35.000000000 +0300
++++ linux-2.6.17-patched/drivers/net/wireless/hostap/hostap_config.h	2006-12-10 19:13:33.000000000 +0200
+@@ -47,4 +47,9 @@
+  */
+ /* #define PRISM2_NO_STATION_MODES */
+ 
++/* Enable TX power Setting functions
++ * (min att = -128 , max att =  127)
++ */
++#define RAW_TXPOWER_SETTING
++
+ #endif /* HOSTAP_CONFIG_H */
+diff -Nur linux-2.6.17/drivers/net/wireless/hostap/hostap.h linux-2.6.17-patched/drivers/net/wireless/hostap/hostap.h
+--- linux-2.6.17/drivers/net/wireless/hostap/hostap.h	2006-06-18 04:49:35.000000000 +0300
++++ linux-2.6.17-patched/drivers/net/wireless/hostap/hostap.h	2006-12-10 19:20:00.000000000 +0200
+@@ -89,6 +89,7 @@
+ extern struct ethtool_ops prism2_ethtool_ops;
+ 
+ int hostap_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
++int hostap_restore_power(struct net_device *dev);
+ 
+ 
+ #endif /* HOSTAP_H */
+diff -Nur linux-2.6.17/drivers/net/wireless/hostap/hostap_hw.c linux-2.6.17-patched/drivers/net/wireless/hostap/hostap_hw.c
+--- linux-2.6.17/drivers/net/wireless/hostap/hostap_hw.c	2006-06-18 04:49:35.000000000 +0300
++++ linux-2.6.17-patched/drivers/net/wireless/hostap/hostap_hw.c	2006-12-10 19:13:33.000000000 +0200
+@@ -1043,6 +1043,7 @@
+ 		       dev->name, local->fragm_threshold);
+ 	}
+ 
++	hostap_restore_power(dev);
+ 	return res;
+ }
+ 
+diff -Nur linux-2.6.17/drivers/net/wireless/hostap/hostap_info.c linux-2.6.17-patched/drivers/net/wireless/hostap/hostap_info.c
+--- linux-2.6.17/drivers/net/wireless/hostap/hostap_info.c	2006-06-18 04:49:35.000000000 +0300
++++ linux-2.6.17-patched/drivers/net/wireless/hostap/hostap_info.c	2006-12-10 19:13:33.000000000 +0200
+@@ -429,6 +429,11 @@
+ 	}
+ 
+ 	/* Get BSSID if we have a valid AP address */
++
++	if ( val == HFA384X_LINKSTATUS_CONNECTED ||
++	     val == HFA384X_LINKSTATUS_DISCONNECTED ) 
++			hostap_restore_power(local->dev);
++
+ 	if (connected) {
+ 		netif_carrier_on(local->dev);
+ 		netif_carrier_on(local->ddev);
+diff -Nur linux-2.6.17/drivers/net/wireless/hostap/hostap_ioctl.c linux-2.6.17-patched/drivers/net/wireless/hostap/hostap_ioctl.c
+--- linux-2.6.17/drivers/net/wireless/hostap/hostap_ioctl.c	2006-06-18 04:49:35.000000000 +0300
++++ linux-2.6.17-patched/drivers/net/wireless/hostap/hostap_ioctl.c	2006-12-10 21:21:03.000000000 +0200
+@@ -1506,23 +1506,20 @@
+ 		val = 255;
+ 
+ 	tmp = val;
+-	tmp >>= 2;
+ 
+-	return -12 - tmp;
++	return tmp;
+ }
+ 
+ static u16 prism2_txpower_dBm_to_hfa386x(int val)
+ {
+ 	signed char tmp;
+ 
+-	if (val > 20)
+-		return 128;
+-	else if (val < -43)
++	if (val > 127)
+ 		return 127;
++	else if (val < -128)
++		return 128;
+ 
+ 	tmp = val;
+-	tmp = -12 - tmp;
+-	tmp <<= 2;
+ 
+ 	return (unsigned char) tmp;
+ }
+@@ -4086,3 +4083,35 @@
+ 
+ 	return ret;
+ }
++
++/* BUG FIX: Restore power setting value when lost due to F/W bug */
++
++int hostap_restore_power(struct net_device *dev)
++{
++        struct hostap_interface *iface = dev->priv;
++       local_info_t *local = iface->local;
++               
++       u16 val;
++       int ret = 0;
++
++       if (local->txpower_type == PRISM2_TXPOWER_OFF) {
++                       val = 0xff; /* use all standby and sleep modes */
++                       ret = local->func->cmd(dev, HFA384X_CMDCODE_WRITEMIF,
++                                              HFA386X_CR_A_D_TEST_MODES2,
++                                              &val, NULL);
++       }
++
++#ifdef RAW_TXPOWER_SETTING
++       if (local->txpower_type == PRISM2_TXPOWER_FIXED) {
++               val = HFA384X_TEST_CFG_BIT_ALC;
++               local->func->cmd(dev, HFA384X_CMDCODE_TEST |
++                                (HFA384X_TEST_CFG_BITS << 8), 0, &val, NULL);
++               val = prism2_txpower_dBm_to_hfa386x(local->txpower);
++               ret = (local->func->cmd(dev, HFA384X_CMDCODE_WRITEMIF,
++                            HFA386X_CR_MANUAL_TX_POWER, &val, NULL));
++       }
++#endif /* RAW_TXPOWER_SETTING */
++       return (ret ? -EOPNOTSUPP : 0);
++}
++
++EXPORT_SYMBOL(hostap_restore_power);