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a58bfb7377
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: Daniel Golle <daniel@makrotopia.org>
108 lines
3.9 KiB
Diff
108 lines
3.9 KiB
Diff
From 9782a7f7488443568fa4d6088b73c9aff7eb8510 Mon Sep 17 00:00:00 2001
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From: Daniel Golle <daniel@makrotopia.org>
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Date: Wed, 19 Apr 2017 16:14:53 +0200
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Subject: [PATCH] rt2x00: add support for external PA on MT7620
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To: Stanislaw Gruszka <sgruszka@redhat.com>
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Cc: Helmut Schaa <helmut.schaa@googlemail.com>,
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linux-wireless@vger.kernel.org,
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Kalle Valo <kvalo@codeaurora.org>
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Content-Type: text/plain; charset="UTF-8"
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Content-Transfer-Encoding: quoted-printable
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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Signed-off-by: Tomislav Po=C5=BEega <pozega.tomislav@gmail.com>
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[pozega.tomislav@gmail.com: use chanreg and dccal helpers.]
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---
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drivers/net/wireless/ralink/rt2x00/rt2800.h | 1 +
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drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 70 +++++++++++++++++++++++++-
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2 files changed, 70 insertions(+), 1 deletion(-)
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--- a/drivers/net/wireless/ralink/rt2x00/rt2800.h
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+++ b/drivers/net/wireless/ralink/rt2x00/rt2800.h
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@@ -2739,6 +2739,7 @@ enum rt2800_eeprom_word {
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#define EEPROM_NIC_CONF2_RX_STREAM FIELD16(0x000f)
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#define EEPROM_NIC_CONF2_TX_STREAM FIELD16(0x00f0)
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#define EEPROM_NIC_CONF2_CRYSTAL FIELD16(0x0600)
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+#define EEPROM_NIC_CONF2_EXTERNAL_PA FIELD16(0xc000)
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/*
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* EEPROM LNA
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--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
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+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
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@@ -4359,6 +4359,45 @@ static void rt2800_config_channel(struct
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rt2800_iq_calibrate(rt2x00dev, rf->channel);
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}
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+ if (rt2x00_rt(rt2x00dev, RT6352)) {
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+ if (test_bit(CAPABILITY_EXTERNAL_PA_TX0,
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+ &rt2x00dev->cap_flags)) {
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+ rt2x00_warn(rt2x00dev, "Using incomplete support for " \
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+ "external PA\n");
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+ reg = rt2800_register_read(rt2x00dev, RF_CONTROL3);
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+ reg |= 0x00000101;
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+ rt2800_register_write(rt2x00dev, RF_CONTROL3, reg);
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+
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+ reg = rt2800_register_read(rt2x00dev, RF_BYPASS3);
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+ reg |= 0x00000101;
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+ rt2800_register_write(rt2x00dev, RF_BYPASS3, reg);
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+
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 43, 0x73);
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 44, 0x73);
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 45, 0x73);
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 46, 0x27);
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 47, 0xC8);
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 48, 0xA4);
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 49, 0x05);
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 54, 0x27);
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 55, 0xC8);
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 56, 0xA4);
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 57, 0x05);
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 58, 0x27);
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 59, 0xC8);
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 60, 0xA4);
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+ rt2800_rfcsr_write_chanreg(rt2x00dev, 61, 0x05);
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+ rt2800_rfcsr_write_dccal(rt2x00dev, 05, 0x00);
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+
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+ rt2800_register_write(rt2x00dev, TX0_RF_GAIN_CORRECT,
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+ 0x36303636);
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+ rt2800_register_write(rt2x00dev, TX0_RF_GAIN_ATTEN,
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+ 0x6C6C6B6C);
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+ rt2800_register_write(rt2x00dev, TX1_RF_GAIN_ATTEN,
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+ 0x6C6C6B6C);
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+ }
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+ }
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+
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bbp = rt2800_bbp_read(rt2x00dev, 4);
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rt2x00_set_field8(&bbp, BBP4_BANDWIDTH, 2 * conf_is_ht40(conf));
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rt2800_bbp_write(rt2x00dev, 4, bbp);
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@@ -9563,7 +9602,8 @@ static int rt2800_init_eeprom(struct rt2
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*/
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eeprom = rt2800_eeprom_read(rt2x00dev, EEPROM_NIC_CONF1);
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- if (rt2x00_rt(rt2x00dev, RT3352)) {
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+ if (rt2x00_rt(rt2x00dev, RT3352) ||
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+ rt2x00_rt(rt2x00dev, RT6352)) {
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if (rt2x00_get_field16(eeprom,
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EEPROM_NIC_CONF1_EXTERNAL_TX0_PA_3352))
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__set_bit(CAPABILITY_EXTERNAL_PA_TX0,
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@@ -9574,6 +9614,18 @@ static int rt2800_init_eeprom(struct rt2
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&rt2x00dev->cap_flags);
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}
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+ eeprom = rt2800_eeprom_read(rt2x00dev, EEPROM_NIC_CONF2);
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+
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+ if (rt2x00_rt(rt2x00dev, RT6352) && eeprom != 0 && eeprom != 0xffff) {
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+ if (rt2x00_get_field16(eeprom,
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+ EEPROM_NIC_CONF2_EXTERNAL_PA)) {
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+ __set_bit(CAPABILITY_EXTERNAL_PA_TX0,
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+ &rt2x00dev->cap_flags);
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+ __set_bit(CAPABILITY_EXTERNAL_PA_TX1,
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+ &rt2x00dev->cap_flags);
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+ }
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+ }
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+
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return 0;
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}
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