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wifi: rt2x00: add RXDCOC calibration for MT7620
Add RXDCOC calibration code from mtk driver. Signed-off-by: Tomislav Požega <pozega.tomislav@gmail.com> [fixed typo reported by Serge Vasilugin <vasilugin@yandex.ru>] Signed-off-by: Daniel Golle <daniel@makrotopia.org> Acked-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: Kalle Valo <kvalo@kernel.org> Link: https://lore.kernel.org/r/850b30f652e88de30d79e968af4eb47aa5bc2511.1663445157.git.daniel@makrotopia.org
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1 changed files with 60 additions and 0 deletions
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@ -8607,6 +8607,65 @@ static void rt2800_r_calibration(struct rt2x00_dev *rt2x00dev)
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rt2800_register_write(rt2x00dev, PWR_PIN_CFG, MAC_PWR_PIN_CFG);
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}
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static 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;
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u8 saverfb0r2, saverfb5r4, saverfb7r4, rfvalue;
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int i;
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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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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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macvalue = rt2800_register_read(rt2x00dev, MAC_SYS_CTRL);
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rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, 0x8);
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if (unlikely(rt2800_wait_bbp_rf_ready(rt2x00dev, MAC_STATUS_CFG_BBP_RF_BUSY_TX)))
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rt2x00_warn(rt2x00dev, "RF TX busy in RX RXDCOC calibration\n");
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saverfb5r4 = rt2800_rfcsr_read_bank(rt2x00dev, 5, 4);
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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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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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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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usleep_range(50, 100);
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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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rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, macvalue);
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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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rt2800_rfcsr_write_bank(rt2x00dev, 0, 2, saverfb0r2);
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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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@ -9216,6 +9275,7 @@ static void rt2800_init_rfcsr_6352(struct rt2x00_dev *rt2x00dev)
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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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