From: Mattias Nissler <mattias.nissler@xxxxxx>
This patch changes rt61 antenna selection again. It helps at least with the
rt61 pci card in my box, I hope I haven't broken behaviour on other RF chips.
RF 2529 antenna setup is incomplete, we need to at code for diversity when we
figure out how it is done properly.
Signed-off-by: Mattias Nissler <mattias.nissler@xxxxxx>
Signed-off-by: Ivo van Doorn <IvDoorn@xxxxxxxxx>
---
drivers/net/wireless/rt2x00/rt61pci.c | 143 +++++++++------------------------
drivers/net/wireless/rt2x00/rt61pci.h | 10 ++-
2 files changed, 46 insertions(+), 107 deletions(-)
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index d540525..0839946 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -422,40 +422,24 @@ static void rt61pci_config_antenna_5x(struct rt2x00_dev *rt2x00dev,
rt61pci_bbp_read(rt2x00dev, 77, &r77);
rt2x00_set_field8(&r3, BBP_R3_SMART_MODE,
- !rt2x00_rf(&rt2x00dev->chip, RF5225));
-
- /*
- * Configure the TX antenna.
- */
- switch (ant->tx) {
- case ANTENNA_A:
- rt2x00_set_field8(&r77, BBP_R77_TX_ANTENNA, 0);
- break;
- case ANTENNA_SW_DIVERSITY:
- case ANTENNA_HW_DIVERSITY:
- /*
- * NOTE: We should never come here because rt2x00lib is
- * supposed to catch this and send us the correct antenna
- * explicitely. However we are nog going to bug about this.
- * Instead, just default to antenna B.
- */
- case ANTENNA_B:
- rt2x00_set_field8(&r77, BBP_R77_TX_ANTENNA, 3);
- break;
- }
+ rt2x00_rf(&rt2x00dev->chip, RF5325));
/*
* Configure the RX antenna.
*/
switch (ant->rx) {
case ANTENNA_HW_DIVERSITY:
- rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 2);
+ rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 2);
rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END,
(rt2x00dev->curr_hwmode != HWMODE_A));
break;
case ANTENNA_A:
- rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 1);
+ rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END, 0);
+ if (rt2x00dev->curr_hwmode == HWMODE_A)
+ rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
+ else
+ rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
break;
case ANTENNA_SW_DIVERSITY:
/*
@@ -465,8 +449,12 @@ static void rt61pci_config_antenna_5x(struct rt2x00_dev *rt2x00dev,
* Instead, just default to antenna B.
*/
case ANTENNA_B:
- rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 1);
+ rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END, 0);
+ if (rt2x00dev->curr_hwmode == HWMODE_A)
+ rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
+ else
+ rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
break;
}
@@ -487,39 +475,20 @@ static void rt61pci_config_antenna_2x(struct rt2x00_dev *rt2x00dev,
rt61pci_bbp_read(rt2x00dev, 77, &r77);
rt2x00_set_field8(&r3, BBP_R3_SMART_MODE,
- !rt2x00_rf(&rt2x00dev->chip, RF2527));
+ rt2x00_rf(&rt2x00dev->chip, RF2529));
rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END,
!test_bit(CONFIG_FRAME_TYPE, &rt2x00dev->flags));
/*
- * Configure the TX antenna.
- */
- switch (ant->tx) {
- case ANTENNA_A:
- rt2x00_set_field8(&r77, BBP_R77_TX_ANTENNA, 0);
- break;
- case ANTENNA_SW_DIVERSITY:
- case ANTENNA_HW_DIVERSITY:
- /*
- * NOTE: We should never come here because rt2x00lib is
- * supposed to catch this and send us the correct antenna
- * explicitely. However we are nog going to bug about this.
- * Instead, just default to antenna B.
- */
- case ANTENNA_B:
- rt2x00_set_field8(&r77, BBP_R77_TX_ANTENNA, 3);
- break;
- }
-
- /*
* Configure the RX antenna.
*/
switch (ant->rx) {
case ANTENNA_HW_DIVERSITY:
- rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 2);
+ rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 2);
break;
case ANTENNA_A:
- rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 1);
+ rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
+ rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
break;
case ANTENNA_SW_DIVERSITY:
/*
@@ -529,7 +498,8 @@ static void rt61pci_config_antenna_2x(struct rt2x00_dev *rt2x00dev,
* Instead, just default to antenna B.
*/
case ANTENNA_B:
- rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 1);
+ rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
+ rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
break;
}
@@ -545,16 +515,13 @@ static void rt61pci_config_antenna_2529_rx(struct rt2x00_dev *rt2x00dev,
rt2x00pci_register_read(rt2x00dev, MAC_CSR13, ®);
- if (p1 != 0xff) {
- rt2x00_set_field32(®, MAC_CSR13_BIT4, !!p1);
- rt2x00_set_field32(®, MAC_CSR13_BIT12, 0);
- rt2x00pci_register_write(rt2x00dev, MAC_CSR13, reg);
- }
- if (p2 != 0xff) {
- rt2x00_set_field32(®, MAC_CSR13_BIT3, !p2);
- rt2x00_set_field32(®, MAC_CSR13_BIT11, 0);
- rt2x00pci_register_write(rt2x00dev, MAC_CSR13, reg);
- }
+ rt2x00_set_field32(®, MAC_CSR13_BIT4, p1);
+ rt2x00_set_field32(®, MAC_CSR13_BIT12, 0);
+
+ rt2x00_set_field32(®, MAC_CSR13_BIT3, !p2);
+ rt2x00_set_field32(®, MAC_CSR13_BIT11, 0);
+
+ rt2x00pci_register_write(rt2x00dev, MAC_CSR13, reg);
}
static void rt61pci_config_antenna_2529(struct rt2x00_dev *rt2x00dev,
@@ -570,37 +537,18 @@ static void rt61pci_config_antenna_2529(struct rt2x00_dev *rt2x00dev,
rt61pci_bbp_read(rt2x00dev, 4, &r4);
rt61pci_bbp_read(rt2x00dev, 77, &r77);
- rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
- rx_ant = !!(rt2x00_get_field16(eeprom, EEPROM_NIC_TX_RX_FIXED) & 2);
-
- rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, 0);
-
- /*
- * Configure the TX antenna.
+ /* FIXME: Antenna selection for the rf 2529 is very confusing in the
+ * legacy driver. The code below should be ok for non-diversity setups.
*/
- switch (ant->tx) {
- case ANTENNA_A:
- rt2x00_set_field8(&r77, BBP_R77_TX_ANTENNA, 0);
- break;
- case ANTENNA_SW_DIVERSITY:
- case ANTENNA_HW_DIVERSITY:
- /*
- * NOTE: We should never come here because rt2x00lib is
- * supposed to catch this and send us the correct antenna
- * explicitely. However we are nog going to bug about this.
- * Instead, just default to antenna B.
- */
- case ANTENNA_B:
- rt2x00_set_field8(&r77, BBP_R77_TX_ANTENNA, 3);
- break;
- }
/*
* Configure the RX antenna.
*/
switch (ant->rx) {
case ANTENNA_A:
- rt61pci_config_antenna_2529_rx(rt2x00dev, 0, rx_ant);
+ rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
+ rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
+ rt61pci_config_antenna_2529_rx(rt2x00dev, 0, 0);
break;
case ANTENNA_SW_DIVERSITY:
case ANTENNA_HW_DIVERSITY:
@@ -611,27 +559,12 @@ static void rt61pci_config_antenna_2529(struct rt2x00_dev *rt2x00dev,
* Instead, just default to antenna B.
*/
case ANTENNA_B:
- rt61pci_config_antenna_2529_rx(rt2x00dev, 1, rx_ant);
+ rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
+ rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
+ rt61pci_config_antenna_2529_rx(rt2x00dev, 1, 1);
break;
}
- /*
- * FIXME: We are using the default antenna setup to
- * determine the remaining settings. This because we
- * need to know what the EEPROM indicated.
- * It is however unclear if this is required, and overall
- * using the default antenna settings here is incorrect
- * since mac80211 might have told us to use fixed settings.
- */
- if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
- rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 2);
- else
- rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 1);
-
- rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END,
- (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY) &&
- (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY));
-
rt61pci_bbp_write(rt2x00dev, 77, r77);
rt61pci_bbp_write(rt2x00dev, 3, r3);
rt61pci_bbp_write(rt2x00dev, 4, r4);
@@ -676,8 +609,6 @@ static void rt61pci_config_antenna(struct rt2x00_dev *rt2x00dev,
unsigned int i;
u32 reg;
- rt2x00pci_register_read(rt2x00dev, PHY_CSR0, ®);
-
if (rt2x00dev->curr_hwmode == HWMODE_A) {
sel = antenna_sel_a;
lna = test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags);
@@ -686,15 +617,17 @@ static void rt61pci_config_antenna(struct rt2x00_dev *rt2x00dev,
lna = test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags);
}
+ for (i = 0; i < ARRAY_SIZE(antenna_sel_a); i++)
+ rt61pci_bbp_write(rt2x00dev, sel[i].word, sel[i].value[lna]);
+
+ rt2x00pci_register_read(rt2x00dev, PHY_CSR0, ®);
+
rt2x00_set_field32(®, PHY_CSR0_PA_PE_BG,
(rt2x00dev->curr_hwmode == HWMODE_B ||
rt2x00dev->curr_hwmode == HWMODE_G));
rt2x00_set_field32(®, PHY_CSR0_PA_PE_A,
(rt2x00dev->curr_hwmode == HWMODE_A));
- for (i = 0; i < ARRAY_SIZE(antenna_sel_a); i++)
- rt61pci_bbp_write(rt2x00dev, sel[i].word, sel[i].value[lna]);
-
rt2x00pci_register_write(rt2x00dev, PHY_CSR0, reg);
if (rt2x00_rf(&rt2x00dev->chip, RF5225) ||
diff --git a/drivers/net/wireless/rt2x00/rt61pci.h b/drivers/net/wireless/rt2x00/rt61pci.h
index ba51016..50d9f6a 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.h
+++ b/drivers/net/wireless/rt2x00/rt61pci.h
@@ -1077,13 +1077,19 @@ struct hw_pairwise_ta_entry {
* R4: RX antenna control
* FRAME_END: 1 - DPDT, 0 - SPDT (Only valid for 802.11G, RF2527 & RF2529)
*/
-#define BBP_R4_RX_ANTENNA FIELD8(0x03)
+
+/*
+ * ANTENNA_CONTROL semantics (guessed):
+ * 0x1: Software controlled antenna switching (fixed or SW diversity)
+ * 0x2: Hardware diversity.
+ */
+#define BBP_R4_RX_ANTENNA_CONTROL FIELD8(0x03)
#define BBP_R4_RX_FRAME_END FIELD8(0x20)
/*
* R77
*/
-#define BBP_R77_TX_ANTENNA FIELD8(0x03)
+#define BBP_R77_RX_ANTENNA FIELD8(0x03)
/*
* RF registers
--
1.5.3.4
-
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