Commit a58bfb73 authored by Daniel Golle's avatar Daniel Golle

mac80211: rt2x00: revert commit causing regression in 5GHz band

From: Stanislaw Gruszka <sgruszka@redhat.com>
This reverts commit 9ad3b55654455258a9463384edb40077439d879f.

As reported by Sergey:

"I got some problem after upgrade kernel to 5.2 version (debian testing
linux-image-5.2.0-2-amd64). 5Ghz client  stopped to see AP.
Some tests with 1metre distance between client-AP: 2.4Ghz  -22dBm, for
5Ghz - 53dBm !, for longer distance (8m + walls) 2.4 - 61dBm, 5Ghz not
visible."

It was identified that rx signal level degradation was caused by
9ad3b5565445 ("rt2800: enable TX_PIN_CFG_LNA_PE_ bits per band").
So revert this commit.
Signed-off-by: default avatarDaniel Golle <daniel@makrotopia.org>
parent bec2df9a
From patchwork Thu Aug 29 11:29:59 2019
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X-Patchwork-Submitter: Stanislaw Gruszka <sgruszka@redhat.com>
X-Patchwork-Id: 11121089
X-Patchwork-Delegate: kvalo@adurom.com
From: Stanislaw Gruszka <sgruszka@redhat.com>
To: linux-wireless@vger.kernel.org
Subject: [PATCH 5.3] Revert "rt2800: enable TX_PIN_CFG_LNA_PE_ bits per band"
Date: Thu, 29 Aug 2019 13:29:59 +0200
Message-Id: <1567078199-3645-1-git-send-email-sgruszka@redhat.com>
Sender: linux-wireless-owner@vger.kernel.org
List-ID: <linux-wireless.vger.kernel.org>
X-Mailing-List: linux-wireless@vger.kernel.org
This reverts commit 9ad3b55654455258a9463384edb40077439d879f.
As reported by Sergey:
"I got some problem after upgrade kernel to 5.2 version (debian testing
linux-image-5.2.0-2-amd64). 5Ghz client stopped to see AP.
Some tests with 1metre distance between client-AP: 2.4Ghz -22dBm, for
5Ghz - 53dBm !, for longer distance (8m + walls) 2.4 - 61dBm, 5Ghz not
visible."
It was identified that rx signal level degradation was caused by
9ad3b5565445 ("rt2800: enable TX_PIN_CFG_LNA_PE_ bits per band").
So revert this commit.
Cc: <stable@vger.kernel.org> # v5.1+
Reported-and-tested-by: Sergey Maranchuk <slav0nic0@gmail.com>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 18 ++++++------------
1 file changed, 6 insertions(+), 12 deletions(-)
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -4242,24 +4242,18 @@ static void rt2800_config_channel(struct
switch (rt2x00dev->default_ant.rx_chain_num) {
case 3:
/* Turn on tertiary LNAs */
- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A2_EN,
- rf->channel > 14);
- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G2_EN,
- rf->channel <= 14);
+ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A2_EN, 1);
+ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G2_EN, 1);
/* fall-through */
case 2:
/* Turn on secondary LNAs */
- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A1_EN,
- rf->channel > 14);
- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G1_EN,
- rf->channel <= 14);
+ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A1_EN, 1);
+ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G1_EN, 1);
/* fall-through */
case 1:
/* Turn on primary LNAs */
- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A0_EN,
- rf->channel > 14);
- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G0_EN,
- rf->channel <= 14);
+ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A0_EN, 1);
+ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G0_EN, 1);
break;
}
......@@ -8,7 +8,7 @@
#include "rt2x00.h"
#include "rt2800lib.h"
@@ -9540,6 +9541,17 @@ static int rt2800_init_eeprom(struct rt2
@@ -9534,6 +9535,17 @@ static int rt2800_init_eeprom(struct rt2
rt2800_init_led(rt2x00dev, &rt2x00dev->led_assoc, LED_TYPE_ASSOC);
rt2800_init_led(rt2x00dev, &rt2x00dev->led_qual, LED_TYPE_QUALITY);
......
......@@ -30,7 +30,7 @@ Signed-off-by: Tomislav Po=C5=BEega <pozega.tomislav@gmail.com>
* EEPROM LNA
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -4365,6 +4365,45 @@ static void rt2800_config_channel(struct
@@ -4359,6 +4359,45 @@ static void rt2800_config_channel(struct
rt2800_iq_calibrate(rt2x00dev, rf->channel);
}
......@@ -76,7 +76,7 @@ Signed-off-by: Tomislav Po=C5=BEega <pozega.tomislav@gmail.com>
bbp = rt2800_bbp_read(rt2x00dev, 4);
rt2x00_set_field8(&bbp, BBP4_BANDWIDTH, 2 * conf_is_ht40(conf));
rt2800_bbp_write(rt2x00dev, 4, bbp);
@@ -9569,7 +9608,8 @@ static int rt2800_init_eeprom(struct rt2
@@ -9563,7 +9602,8 @@ static int rt2800_init_eeprom(struct rt2
*/
eeprom = rt2800_eeprom_read(rt2x00dev, EEPROM_NIC_CONF1);
......@@ -86,7 +86,7 @@ Signed-off-by: Tomislav Po=C5=BEega <pozega.tomislav@gmail.com>
if (rt2x00_get_field16(eeprom,
EEPROM_NIC_CONF1_EXTERNAL_TX0_PA_3352))
__set_bit(CAPABILITY_EXTERNAL_PA_TX0,
@@ -9580,6 +9620,18 @@ static int rt2800_init_eeprom(struct rt2
@@ -9574,6 +9614,18 @@ static int rt2800_init_eeprom(struct rt2
&rt2x00dev->cap_flags);
}
......
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -8431,6 +8431,58 @@ static void rt2800_init_rfcsr_5592(struc
@@ -8425,6 +8425,58 @@ static void rt2800_init_rfcsr_5592(struc
rt2800_led_open_drain_enable(rt2x00dev);
}
......@@ -59,7 +59,7 @@
static void rt2800_bbp_core_soft_reset(struct rt2x00_dev *rt2x00dev,
bool set_bw, bool is_ht40)
{
@@ -9038,6 +9090,7 @@ static void rt2800_init_rfcsr_6352(struc
@@ -9032,6 +9084,7 @@ static void rt2800_init_rfcsr_6352(struc
rt2800_rfcsr_write_dccal(rt2x00dev, 5, 0x00);
rt2800_rfcsr_write_dccal(rt2x00dev, 17, 0x7C);
......
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -8483,6 +8483,160 @@ void rt2800_rf_self_txdc_cal(struct rt2x
@@ -8477,6 +8477,160 @@ void rt2800_rf_self_txdc_cal(struct rt2x
}
EXPORT_SYMBOL_GPL(rt2800_rf_self_txdc_cal);
......@@ -161,7 +161,7 @@
static void rt2800_bbp_core_soft_reset(struct rt2x00_dev *rt2x00dev,
bool set_bw, bool is_ht40)
{
@@ -9090,6 +9244,7 @@ static void rt2800_init_rfcsr_6352(struc
@@ -9084,6 +9238,7 @@ static void rt2800_init_rfcsr_6352(struc
rt2800_rfcsr_write_dccal(rt2x00dev, 5, 0x00);
rt2800_rfcsr_write_dccal(rt2x00dev, 17, 0x7C);
......
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -8637,6 +8637,71 @@ void rt2800_r_calibration(struct rt2x00_
@@ -8631,6 +8631,71 @@ void rt2800_r_calibration(struct rt2x00_
}
EXPORT_SYMBOL_GPL(rt2800_r_calibration);
......@@ -72,7 +72,7 @@
static void rt2800_bbp_core_soft_reset(struct rt2x00_dev *rt2x00dev,
bool set_bw, bool is_ht40)
{
@@ -9246,6 +9311,7 @@ static void rt2800_init_rfcsr_6352(struc
@@ -9240,6 +9305,7 @@ static void rt2800_init_rfcsr_6352(struc
rt2800_r_calibration(rt2x00dev);
rt2800_rf_self_txdc_cal(rt2x00dev);
......
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -8702,6 +8702,386 @@ void rt2800_rxdcoc_calibration(struct rt
@@ -8696,6 +8696,386 @@ void rt2800_rxdcoc_calibration(struct rt
}
EXPORT_SYMBOL_GPL(rt2800_rxdcoc_calibration);
......@@ -387,7 +387,7 @@
static void rt2800_bbp_core_soft_reset(struct rt2x00_dev *rt2x00dev,
bool set_bw, bool is_ht40)
{
@@ -9314,6 +9694,7 @@ static void rt2800_init_rfcsr_6352(struc
@@ -9308,6 +9688,7 @@ static void rt2800_init_rfcsr_6352(struc
rt2800_rxdcoc_calibration(rt2x00dev);
rt2800_bw_filter_calibration(rt2x00dev, true);
rt2800_bw_filter_calibration(rt2x00dev, false);
......
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -9082,6 +9082,954 @@ restore_value:
@@ -9076,6 +9076,954 @@ restore_value:
}
EXPORT_SYMBOL_GPL(rt2800_rxiq_calibration);
......@@ -955,7 +955,7 @@
static void rt2800_bbp_core_soft_reset(struct rt2x00_dev *rt2x00dev,
bool set_bw, bool is_ht40)
{
@@ -9694,6 +10642,7 @@ static void rt2800_init_rfcsr_6352(struc
@@ -9688,6 +10636,7 @@ static void rt2800_init_rfcsr_6352(struc
rt2800_rxdcoc_calibration(rt2x00dev);
rt2800_bw_filter_calibration(rt2x00dev, true);
rt2800_bw_filter_calibration(rt2x00dev, false);
......
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