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>
103 lines
3.4 KiB
Diff
103 lines
3.4 KiB
Diff
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
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+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
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@@ -8631,6 +8631,71 @@ void rt2800_r_calibration(struct rt2x00_
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}
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EXPORT_SYMBOL_GPL(rt2800_r_calibration);
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+void rt2800_rxdcoc_calibration(struct rt2x00_dev *rt2x00dev)
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+{
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+ u8 bbpreg = 0;
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+ u32 macvalue = 0, macvalue1 = 0;
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+ u8 saverfb0r2, saverfb5r4, saverfb7r4, rfvalue;
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+ int i;
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+
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+ saverfb0r2 = rt2800_rfcsr_read_bank(rt2x00dev, 0, 2);
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+ rfvalue = saverfb0r2;
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+ rfvalue |= 0x03;
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+ rt2800_rfcsr_write_bank(rt2x00dev, 0, 2, rfvalue);
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+
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+ rt2800_bbp_write(rt2x00dev, 158, 141);
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+ bbpreg = rt2800_bbp_read(rt2x00dev, 159);
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+ bbpreg |= 0x10;
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+ rt2800_bbp_write(rt2x00dev, 159, bbpreg);
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+
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+ macvalue = rt2800_register_read(rt2x00dev, MAC_SYS_CTRL);
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+ rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, 0x8);
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+
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+ for (i = 0; i < 10000; i++) {
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+ macvalue1 = rt2800_register_read(rt2x00dev, MAC_STATUS_CFG);
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+ if (macvalue1 & 0x1)
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+ udelay(50);
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+ else
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+ break;
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+ }
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+
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+ saverfb5r4 = rt2800_rfcsr_read_bank(rt2x00dev, 5, 0);
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+ saverfb7r4 = rt2800_rfcsr_read_bank(rt2x00dev, 7, 4);
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+ saverfb5r4 = saverfb5r4 & (~0x40);
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+ saverfb7r4 = saverfb7r4 & (~0x40);
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+ rt2800_rfcsr_write_dccal(rt2x00dev, 4, 0x64);
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+ rt2800_rfcsr_write_bank(rt2x00dev, 5, 4, saverfb5r4);
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+ rt2800_rfcsr_write_bank(rt2x00dev, 7, 4, saverfb7r4);
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+
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+ rt2800_bbp_write(rt2x00dev, 158, 141);
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+ bbpreg = rt2800_bbp_read(rt2x00dev, 159);
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+ bbpreg = bbpreg & (~0x40);
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+ rt2800_bbp_write(rt2x00dev, 159, bbpreg);
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+ bbpreg |= 0x48;
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+ rt2800_bbp_write(rt2x00dev, 159, bbpreg);
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+
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+ for (i = 0; i < 10000; i++) {
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+ bbpreg = rt2800_bbp_read(rt2x00dev, 159);
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+ if ((bbpreg & 0x40)==0)
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+ break;
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+ udelay(50);
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+ }
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+
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+ bbpreg = rt2800_bbp_read(rt2x00dev, 159);
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+ bbpreg = bbpreg & (~0x40);
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+ rt2800_bbp_write(rt2x00dev, 159, bbpreg);
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+
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+ rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, macvalue);
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+
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+ rt2800_bbp_write(rt2x00dev, 158, 141);
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+ bbpreg = rt2800_bbp_read(rt2x00dev, 159);
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+ bbpreg &= (~0x10);
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+ rt2800_bbp_write(rt2x00dev, 159, bbpreg);
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+
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+ rt2800_rfcsr_write_bank(rt2x00dev, 0, 2, saverfb0r2);
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+}
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+EXPORT_SYMBOL_GPL(rt2800_rxdcoc_calibration);
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+
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static void rt2800_bbp_core_soft_reset(struct rt2x00_dev *rt2x00dev,
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bool set_bw, bool is_ht40)
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{
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@@ -9240,6 +9305,7 @@ static void rt2800_init_rfcsr_6352(struc
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rt2800_r_calibration(rt2x00dev);
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rt2800_rf_self_txdc_cal(rt2x00dev);
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+ rt2800_rxdcoc_calibration(rt2x00dev);
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rt2800_bw_filter_calibration(rt2x00dev, true);
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rt2800_bw_filter_calibration(rt2x00dev, false);
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}
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--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
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+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
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@@ -245,6 +245,7 @@ void rt2800_vco_calibration(struct rt2x0
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void rt2800_rf_self_txdc_cal(struct rt2x00_dev *rt2x00dev);
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int rt2800_calcrcalibrationcode(struct rt2x00_dev *rt2x00dev, int d1, int d2);
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void rt2800_r_calibration(struct rt2x00_dev *rt2x00dev);
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+void rt2800_rxdcoc_calibration(struct rt2x00_dev *rt2x00dev);
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int rt2800_enable_radio(struct rt2x00_dev *rt2x00dev);
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void rt2800_disable_radio(struct rt2x00_dev *rt2x00dev);
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--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
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+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
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@@ -566,6 +566,7 @@ struct rt2x00lib_ops {
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void (*rf_self_txdc_cal) (struct rt2x00_dev *rt2x00dev);
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int (*calcrcalibrationcode) (struct rt2x00_dev *rt2x00dev, int d1, int d2);
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void (*r_calibration) (struct rt2x00_dev *rt2x00dev);
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+ void (*rxdcoc_calibration) (struct rt2x00_dev *rt2x00dev);
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/*
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* Data queue handlers.
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