1. Move MT7620 PA/LNA calibration code to dedicated functions.
2. For external PA/LNA devices, restore RF and BBP registers before
R-Calibration.
3. Do Rx DCOC calibration again before RXIQ calibration.
4. Add some missing LNA related registers' initialization.
Signed-off-by: Shiji Yang <yangshiji66@xxxxxxxxxxx>
---
.../net/wireless/ralink/rt2x00/rt2800lib.c | 176 ++++++++++++------
drivers/net/wireless/ralink/rt2x00/rt2x00.h | 6 +
2 files changed, 130 insertions(+), 52 deletions(-)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index 66ee50320..8d40f52da 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -4520,41 +4520,6 @@ static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev,
rt2800_bbp_write_with_rx_chain(rt2x00dev, 66, bbp);
usleep_range(1000, 1500);
-
- if (test_bit(CAPABILITY_EXTERNAL_PA_TX0,
- &rt2x00dev->cap_flags)) {
- reg = rt2800_register_read(rt2x00dev, RF_CONTROL3);
- reg |= 0x00000101;
- rt2800_register_write(rt2x00dev, RF_CONTROL3, reg);
-
- reg = rt2800_register_read(rt2x00dev, RF_BYPASS3);
- reg |= 0x00000101;
- rt2800_register_write(rt2x00dev, RF_BYPASS3, reg);
-
- rt2800_rfcsr_write_chanreg(rt2x00dev, 43, 0x73);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 44, 0x73);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 45, 0x73);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 46, 0x27);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 47, 0xC8);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 48, 0xA4);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 49, 0x05);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 54, 0x27);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 55, 0xC8);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 56, 0xA4);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 57, 0x05);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 58, 0x27);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 59, 0xC8);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 60, 0xA4);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 61, 0x05);
- rt2800_rfcsr_write_dccal(rt2x00dev, 05, 0x00);
-
- rt2800_register_write(rt2x00dev, TX0_RF_GAIN_CORRECT,
- 0x36303636);
- rt2800_register_write(rt2x00dev, TX0_RF_GAIN_ATTEN,
- 0x6C6C6B6C);
- rt2800_register_write(rt2x00dev, TX1_RF_GAIN_ATTEN,
- 0x6C6C6B6C);
- }
}
bbp = rt2800_bbp_read(rt2x00dev, 4);
@@ -5664,16 +5629,6 @@ void rt2800_vco_calibration(struct rt2x00_dev *rt2x00dev)
}
}
rt2800_register_write(rt2x00dev, TX_PIN_CFG, tx_pin);
-
- if (rt2x00_rt(rt2x00dev, RT6352)) {
- if (rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
- rt2800_bbp_write(rt2x00dev, 75, 0x68);
- rt2800_bbp_write(rt2x00dev, 76, 0x4C);
- rt2800_bbp_write(rt2x00dev, 79, 0x1C);
- rt2800_bbp_write(rt2x00dev, 80, 0x0C);
- rt2800_bbp_write(rt2x00dev, 82, 0xB6);
- }
- }
}
EXPORT_SYMBOL_GPL(rt2800_vco_calibration);
@@ -10400,6 +10355,128 @@ static void rt2800_bw_filter_calibration(struct rt2x00_dev *rt2x00dev,
rt2800_register_write(rt2x00dev, RF_BYPASS0, MAC_RF_BYPASS0);
}
+static void rt2800_restore_rf_bbp_rt6352(struct rt2x00_dev *rt2x00dev)
+{
+ if (rt2x00_has_cap_external_pa(rt2x00dev)) {
+ rt2800_register_write(rt2x00dev, RF_CONTROL3, 0x0);
+ rt2800_register_write(rt2x00dev, RF_BYPASS3, 0x0);
+ }
+
+ if (rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 14, 0x16);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 17, 0x23);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 18, 0x02);
+ }
+
+ if (rt2x00_has_cap_external_pa(rt2x00dev)) {
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 43, 0xd3);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 44, 0xb3);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 45, 0xd5);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 46, 0x27);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 47, 0x6c);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 48, 0xfc);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 49, 0x1f);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 54, 0x27);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 55, 0x66);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 56, 0xff);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 57, 0x1c);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 58, 0x20);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 59, 0x6b);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 60, 0xf7);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 61, 0x09);
+ }
+
+ if (rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
+ rt2800_bbp_write(rt2x00dev, 75, 0x60);
+ rt2800_bbp_write(rt2x00dev, 76, 0x44);
+ rt2800_bbp_write(rt2x00dev, 79, 0x1c);
+ rt2800_bbp_write(rt2x00dev, 80, 0x0c);
+ rt2800_bbp_write(rt2x00dev, 82, 0xB6);
+ }
+
+ if (rt2x00_has_cap_external_pa(rt2x00dev)) {
+ rt2800_register_write(rt2x00dev, TX0_RF_GAIN_CORRECT, 0x3630363a);
+ rt2800_register_write(rt2x00dev, TX0_RF_GAIN_ATTEN, 0x6c6c666c);
+ rt2800_register_write(rt2x00dev, TX1_RF_GAIN_ATTEN, 0x6c6c666c);
+ }
+}
+
+static void rt2800_calibration_rt6352(struct rt2x00_dev *rt2x00dev)
+{
+ u32 reg;
+
+ if (rt2x00_has_cap_external_pa(rt2x00dev) ||
+ rt2x00_has_cap_external_lna_bg(rt2x00dev))
+ rt2800_restore_rf_bbp_rt6352(rt2x00dev);
+
+ rt2800_r_calibration(rt2x00dev);
+ rt2800_rf_self_txdc_cal(rt2x00dev);
+ rt2800_rxdcoc_calibration(rt2x00dev);
+ rt2800_bw_filter_calibration(rt2x00dev, true);
+ rt2800_bw_filter_calibration(rt2x00dev, false);
+ rt2800_loft_iq_calibration(rt2x00dev);
+
+ /* missing DPD calibration for internal PA devices */
+
+ rt2800_rxdcoc_calibration(rt2x00dev);
+ rt2800_rxiq_calibration(rt2x00dev);
+
+ if (!rt2x00_has_cap_external_pa(rt2x00dev) &&
+ !rt2x00_has_cap_external_lna_bg(rt2x00dev))
+ return;
+
+ if (rt2x00_has_cap_external_pa(rt2x00dev)) {
+ reg = rt2800_register_read(rt2x00dev, RF_CONTROL3);
+ reg |= 0x00000101;
+ rt2800_register_write(rt2x00dev, RF_CONTROL3, reg);
+
+ reg = rt2800_register_read(rt2x00dev, RF_BYPASS3);
+ reg |= 0x00000101;
+ rt2800_register_write(rt2x00dev, RF_BYPASS3, reg);
+ }
+
+ if (rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 14, 0x66);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 17, 0x20);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 18, 0x42);
+ }
+
+ if (rt2x00_has_cap_external_pa(rt2x00dev)) {
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 43, 0x73);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 44, 0x73);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 45, 0x73);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 46, 0x27);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 47, 0xc8);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 48, 0xa4);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 49, 0x05);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 54, 0x27);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 55, 0xc8);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 56, 0xa4);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 57, 0x05);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 58, 0x27);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 59, 0xc8);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 60, 0xa4);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 61, 0x05);
+ }
+
+ if (rt2x00_has_cap_external_pa(rt2x00dev))
+ rt2800_rfcsr_write_dccal(rt2x00dev, 05, 0x00);
+
+ if (rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
+ rt2800_bbp_write(rt2x00dev, 75, 0x68);
+ rt2800_bbp_write(rt2x00dev, 76, 0x4c);
+ rt2800_bbp_write(rt2x00dev, 79, 0x1c);
+ rt2800_bbp_write(rt2x00dev, 80, 0x0c);
+ rt2800_bbp_write(rt2x00dev, 82, 0xb6);
+ }
+
+ if (rt2x00_has_cap_external_pa(rt2x00dev)) {
+ rt2800_register_write(rt2x00dev, TX0_RF_GAIN_CORRECT, 0x36303636);
+ rt2800_register_write(rt2x00dev, TX0_RF_GAIN_ATTEN, 0x6c6c6b6c);
+ rt2800_register_write(rt2x00dev, TX1_RF_GAIN_ATTEN, 0x6c6c6b6c);
+ }
+}
+
static void rt2800_init_rfcsr_6352(struct rt2x00_dev *rt2x00dev)
{
/* Initialize RF central register to default value */
@@ -10664,13 +10741,8 @@ static void rt2800_init_rfcsr_6352(struct rt2x00_dev *rt2x00dev)
rt2800_rfcsr_write_dccal(rt2x00dev, 5, 0x00);
rt2800_rfcsr_write_dccal(rt2x00dev, 17, 0x7C);
- rt2800_r_calibration(rt2x00dev);
- rt2800_rf_self_txdc_cal(rt2x00dev);
- rt2800_rxdcoc_calibration(rt2x00dev);
- rt2800_bw_filter_calibration(rt2x00dev, true);
- rt2800_bw_filter_calibration(rt2x00dev, false);
- rt2800_loft_iq_calibration(rt2x00dev);
- rt2800_rxiq_calibration(rt2x00dev);
+ /* Do calibration and init PA/LNA */
+ rt2800_calibration_rt6352(rt2x00dev);
}
static void rt2800_init_rfcsr(struct rt2x00_dev *rt2x00dev)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00.h b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
index b8338a422..0f6252ea6 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
@@ -1267,6 +1267,12 @@ rt2x00_has_cap_external_lna_bg(struct rt2x00_dev *rt2x00dev)
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_EXTERNAL_LNA_BG);
}
+static inline bool
+rt2x00_has_cap_external_pa(struct rt2x00_dev *rt2x00dev)
+{
+ return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_EXTERNAL_PA_TX0);
+}
+
static inline bool
rt2x00_has_cap_double_antenna(struct rt2x00_dev *rt2x00dev)
{
--
2.39.2
