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| author | Daniel Golle <daniel@makrotopia.org> | 2017-04-17 21:38:32 +0200 |
|---|---|---|
| committer | Jo-Philipp Wich <jo@mein.io> | 2017-05-02 23:17:22 +0200 |
| commit | 820a39687db3b14c3264ee37548e2cac3f911bca (patch) | |
| tree | bef2b615371fc6027421af3e34541d0b6e3c8c58 /package/kernel | |
| parent | 5b91d2b52ed0d31e6ca6990ca01923e3a3d1d217 (diff) | |
| download | upstream-820a39687db3b14c3264ee37548e2cac3f911bca.tar.gz upstream-820a39687db3b14c3264ee37548e2cac3f911bca.tar.bz2 upstream-820a39687db3b14c3264ee37548e2cac3f911bca.zip | |
mac80211: rt2x00: fix MT7620 LNA gain and VCO-after-ALC
This should fix issues with bad RX as well as AP not coming up and/or
scanning failing.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Diffstat (limited to 'package/kernel')
2 files changed, 88 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/021-01-rt2800-fix-LNA-gain-assignment-for-MT7620.patch b/package/kernel/mac80211/patches/021-01-rt2800-fix-LNA-gain-assignment-for-MT7620.patch new file mode 100644 index 0000000000..3270ea2c56 --- /dev/null +++ b/package/kernel/mac80211/patches/021-01-rt2800-fix-LNA-gain-assignment-for-MT7620.patch @@ -0,0 +1,54 @@ +From 0109238d62a99ea779a7e28e21868118e7b8d69d Mon Sep 17 00:00:00 2001 +From: Daniel Golle <daniel@makrotopia.org> +Date: Mon, 10 Apr 2017 14:28:14 +0200 +Subject: [PATCH 1/2] rt2800: fix LNA gain assignment for MT7620 +To: Stanislaw Gruszka <sgruszka@redhat.com> +Cc: Helmut Schaa <helmut.schaa@googlemail.com>, + linux-wireless@vger.kernel.org, + Kalle Valo <kvalo@codeaurora.org> + +The base value used for MT7620 differs from Rt5392 which resulted in +quite bad RX signal quality. Fix this by using the correct base value as +well as the LNA calibration values for HT20. + +Reported-by: Tom Psyborg <pozega.tomislav@gmail.com> +Signed-off-by: Daniel Golle <daniel@makrotopia.org> +--- + drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 18 ++++++++++++++++-- + 1 file changed, 16 insertions(+), 2 deletions(-) + +diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +index ba06ac2d876d..7135519a638c 100644 +--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c ++++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +@@ -3806,11 +3806,25 @@ static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev, + } + + if (rt2x00_rt(rt2x00dev, RT5592) || rt2x00_rt(rt2x00dev, RT6352)) { ++ reg = 0x10; ++ if (!conf_is_ht40(conf)) { ++ if (rt2x00_rt(rt2x00dev, RT6352) && ++ rt2x00_has_cap_external_lna_bg(rt2x00dev)) { ++ reg |= 0x5; ++ } else { ++ reg |= 0xa; ++ } ++ } + rt2800_bbp_write(rt2x00dev, 195, 141); +- rt2800_bbp_write(rt2x00dev, 196, conf_is_ht40(conf) ? 0x10 : 0x1a); ++ rt2800_bbp_write(rt2x00dev, 196, reg); + + /* AGC init */ +- reg = (rf->channel <= 14 ? 0x1c : 0x24) + 2 * rt2x00dev->lna_gain; ++ if (rt2x00_rt(rt2x00dev, RT6352)) ++ reg = 0x04; ++ else ++ reg = rf->channel <= 14 ? 0x1c : 0x24; ++ ++ reg += 2 * rt2x00dev->lna_gain; + rt2800_bbp_write_with_rx_chain(rt2x00dev, 66, reg); + + rt2800_iq_calibrate(rt2x00dev, rf->channel); +-- +2.12.2 + diff --git a/package/kernel/mac80211/patches/021-02-rt2800-do-VCO-calibration-after-programming-ALC.patch b/package/kernel/mac80211/patches/021-02-rt2800-do-VCO-calibration-after-programming-ALC.patch new file mode 100644 index 0000000000..1dafb78f1c --- /dev/null +++ b/package/kernel/mac80211/patches/021-02-rt2800-do-VCO-calibration-after-programming-ALC.patch @@ -0,0 +1,34 @@ +From feb608c7986c14bab153f31f8e96f251072e6578 Mon Sep 17 00:00:00 2001 +From: Daniel Golle <daniel@makrotopia.org> +Date: Mon, 10 Apr 2017 15:33:20 +0200 +Subject: [PATCH 2/2] rt2800: do VCO calibration after programming ALC +To: Stanislaw Gruszka <sgruszka@redhat.com> +Cc: Helmut Schaa <helmut.schaa@googlemail.com>, + linux-wireless@vger.kernel.org, + Kalle Valo <kvalo@codeaurora.org> + +Scanning fails if we don't do VCO calibration every time. +The vendor driver duplicates the VCO calibration function into the +channel switching logic, we can do the same with less duplication. + +Signed-off-by: Daniel Golle <daniel@makrotopia.org> +--- + drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 2 ++ + 1 file changed, 2 insertions(+) + +diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +index 7135519a638c..870bf315f98b 100644 +--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c ++++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +@@ -3407,6 +3407,8 @@ static void rt2800_config_alc(struct rt2x00_dev *rt2x00dev, + rt2800_rfcsr_write(rt2x00dev, 42, 0x5b); + } + rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, mac_sys_ctrl); ++ ++ rt2800_vco_calibration(rt2x00dev); + } + + static void rt2800_bbp_write_with_rx_chain(struct rt2x00_dev *rt2x00dev, +-- +2.12.2 + |