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path: root/drivers/net/wireless/rt2x00
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Diffstat (limited to 'drivers/net/wireless/rt2x00')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00.h5
-rw-r--r--drivers/net/wireless/rt2x00/rt61pci.c48
-rw-r--r--drivers/net/wireless/rt2x00/rt73usb.c41
3 files changed, 63 insertions, 31 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index ced0a5251766..3fa3d5b006a6 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -804,6 +804,11 @@ struct rt2x00_dev {
u32 *rf;
/*
+ * LNA gain
+ */
+ short lna_gain;
+
+ /*
* USB Max frame size (for rt2500usb & rt73usb).
*/
u16 usb_maxpacket;
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index 87012f88461f..0fcc45636834 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -638,6 +638,30 @@ static void rt61pci_config_erp(struct rt2x00_dev *rt2x00dev,
rt2x00pci_register_write(rt2x00dev, TXRX_CSR4, reg);
}
+
+static void rt61pci_config_lna_gain(struct rt2x00_dev *rt2x00dev,
+ struct rt2x00lib_conf *libconf)
+{
+ u16 eeprom;
+ short lna_gain = 0;
+
+ if (libconf->band == IEEE80211_BAND_2GHZ) {
+ if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags))
+ lna_gain += 14;
+
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &eeprom);
+ lna_gain -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_BG_1);
+ } else {
+ if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags))
+ lna_gain += 14;
+
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &eeprom);
+ lna_gain -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_A_1);
+ }
+
+ rt2x00dev->lna_gain = lna_gain;
+}
+
static void rt61pci_config_phymode(struct rt2x00_dev *rt2x00dev,
const int basic_rate_mask)
{
@@ -956,6 +980,9 @@ static void rt61pci_config(struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_conf *libconf,
const unsigned int flags)
{
+ /* Always recalculate LNA gain before changing configuration */
+ rt61pci_config_lna_gain(rt2x00dev, libconf);
+
if (flags & CONFIG_UPDATE_PHYMODE)
rt61pci_config_phymode(rt2x00dev, libconf->basic_rates);
if (flags & CONFIG_UPDATE_CHANNEL)
@@ -1883,40 +1910,27 @@ static void rt61pci_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
*/
static int rt61pci_agc_to_rssi(struct rt2x00_dev *rt2x00dev, int rxd_w1)
{
- u16 eeprom;
- u8 offset;
+ u8 offset = rt2x00dev->lna_gain;
u8 lna;
lna = rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_LNA);
switch (lna) {
case 3:
- offset = 90;
+ offset += 90;
break;
case 2:
- offset = 74;
+ offset += 74;
break;
case 1:
- offset = 64;
+ offset += 64;
break;
default:
return 0;
}
if (rt2x00dev->rx_status.band == IEEE80211_BAND_5GHZ) {
- if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags))
- offset += 14;
-
if (lna == 3 || lna == 2)
offset += 10;
-
- rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &eeprom);
- offset -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_A_1);
- } else {
- if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags))
- offset += 14;
-
- rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &eeprom);
- offset -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_BG_1);
}
return rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_AGC) * 2 - offset;
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index 1bd6b3ffca09..4f2eb90aaf07 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -664,6 +664,26 @@ static void rt73usb_config_erp(struct rt2x00_dev *rt2x00dev,
rt73usb_register_write(rt2x00dev, TXRX_CSR4, reg);
}
+static void rt73usb_config_lna_gain(struct rt2x00_dev *rt2x00dev,
+ struct rt2x00lib_conf *libconf)
+{
+ u16 eeprom;
+ short lna_gain = 0;
+
+ if (libconf->band == IEEE80211_BAND_2GHZ) {
+ if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags))
+ lna_gain += 14;
+
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &eeprom);
+ lna_gain -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_BG_1);
+ } else {
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &eeprom);
+ lna_gain -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_A_1);
+ }
+
+ rt2x00dev->lna_gain = lna_gain;
+}
+
static void rt73usb_config_phymode(struct rt2x00_dev *rt2x00dev,
const int basic_rate_mask)
{
@@ -918,6 +938,9 @@ static void rt73usb_config(struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_conf *libconf,
const unsigned int flags)
{
+ /* Always recalculate LNA gain before changing configuration */
+ rt73usb_config_lna_gain(rt2x00dev, libconf);
+
if (flags & CONFIG_UPDATE_PHYMODE)
rt73usb_config_phymode(rt2x00dev, libconf->basic_rates);
if (flags & CONFIG_UPDATE_CHANNEL)
@@ -1644,20 +1667,19 @@ static void rt73usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
*/
static int rt73usb_agc_to_rssi(struct rt2x00_dev *rt2x00dev, int rxd_w1)
{
- u16 eeprom;
- u8 offset;
+ u8 offset = rt2x00dev->lna_gain;
u8 lna;
lna = rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_LNA);
switch (lna) {
case 3:
- offset = 90;
+ offset += 90;
break;
case 2:
- offset = 74;
+ offset += 74;
break;
case 1:
- offset = 64;
+ offset += 64;
break;
default:
return 0;
@@ -1673,15 +1695,6 @@ static int rt73usb_agc_to_rssi(struct rt2x00_dev *rt2x00dev, int rxd_w1)
else if (lna == 2)
offset += 8;
}
-
- rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &eeprom);
- offset -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_A_1);
- } else {
- if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags))
- offset += 14;
-
- rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &eeprom);
- offset -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_BG_1);
}
return rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_AGC) * 2 - offset;
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-19 07:27:57 +0300