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mac80211: rt2x00: add RF self TXDC calibration

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Add TX self calibration based on mtk driver.

Signed-off-by: Tomislav Požega <pozega.tomislav@gmail.com>
This commit is contained in:
Tomislav Požega 2018-01-08 13:42:27 +01:00 committed by John Crispin
parent 6044682b83
commit 66929e3414
1 changed files with 89 additions and 0 deletions
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89
package/kernel/mac80211/patches/rt2x00/982-rt2x00-add-rf-self-txdc-calibration.patch Normal file
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@ -0,0 +1,89 @@
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -7652,6 +7652,58 @@ static void rt2800_init_rfcsr_5592(struc
rt2800_led_open_drain_enable(rt2x00dev);
}
+void rt2800_rf_self_txdc_cal(struct rt2x00_dev *rt2x00dev)
+{
+ u8 rfb5r1_org, rfb7r1_org, rfvalue;
+ u32 mac0518, mac051c, mac0528, mac052c;
+ u8 i;
+
+ rt2x00_info(rt2x00dev, "RF Tx self calibration start\n");
+ mac0518 = rt2800_register_read(rt2x00dev, RF_CONTROL0);
+ mac051c = rt2800_register_read(rt2x00dev, RF_BYPASS0);
+ mac0528 = rt2800_register_read(rt2x00dev, RF_CONTROL2);
+ mac052c = rt2800_register_read(rt2x00dev, RF_BYPASS2);
+
+ rt2800_register_write(rt2x00dev, RF_BYPASS0, 0x0);
+ rt2800_register_write(rt2x00dev, RF_BYPASS2, 0x0);
+
+ rt2800_register_write(rt2x00dev, RF_CONTROL0, 0xC);
+ rt2800_register_write(rt2x00dev, RF_BYPASS0, 0x3306);
+ rt2800_register_write(rt2x00dev, RF_CONTROL2, 0x3330);
+ rt2800_register_write(rt2x00dev, RF_BYPASS2, 0xfffff);
+ rfb5r1_org = rt2800_rfcsr_read_bank(rt2x00dev, 5, 1);
+ rfb7r1_org = rt2800_rfcsr_read_bank(rt2x00dev, 7, 1);
+
+ rt2800_rfcsr_write_bank(rt2x00dev, 5, 1, 0x4);
+ for (i = 0; i < 100; i = i + 1) {
+ udelay(50);
+ rfvalue = rt2800_rfcsr_read_bank(rt2x00dev, 5, 1);
+ if((rfvalue & 0x04) != 0x4)
+ break;
+ }
+ rt2800_rfcsr_write_bank(rt2x00dev, 5, 1, rfb5r1_org);
+
+ rt2800_rfcsr_write_bank(rt2x00dev, 7, 1, 0x4);
+ for (i = 0; i < 100; i = i + 1) {
+ udelay(50);
+ rfvalue = rt2800_rfcsr_read_bank(rt2x00dev, 7, 1);
+ if((rfvalue & 0x04) != 0x4)
+ break;
+ }
+ rt2800_rfcsr_write_bank(rt2x00dev, 7, 1, rfb7r1_org);
+
+ rt2800_register_write(rt2x00dev, RF_BYPASS0, 0x0);
+ rt2800_register_write(rt2x00dev, RF_BYPASS2, 0x0);
+ rt2800_register_write(rt2x00dev, RF_CONTROL0, mac0518);
+ rt2800_register_write(rt2x00dev, RF_BYPASS0, mac051c);
+ rt2800_register_write(rt2x00dev, RF_CONTROL2, mac0528);
+ rt2800_register_write(rt2x00dev, RF_BYPASS2, mac052c);
+
+ rt2x00_info(rt2x00dev, "RF Tx self calibration end\n");
+
+}
+EXPORT_SYMBOL_GPL(rt2800_rf_self_txdc_cal);
+
static void rt2800_bbp_core_soft_reset(struct rt2x00_dev *rt2x00dev,
bool set_bw, bool is_ht40)
{
@@ -8259,6 +8311,7 @@ static void rt2800_init_rfcsr_6352(struc
rt2800_rfcsr_write_dccal(rt2x00dev, 5, 0x00);
rt2800_rfcsr_write_dccal(rt2x00dev, 17, 0x7C);
+ rt2800_rf_self_txdc_cal(rt2x00dev);
rt2800_bw_filter_calibration(rt2x00dev, true);
rt2800_bw_filter_calibration(rt2x00dev, false);
}
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
@@ -227,6 +227,7 @@ void rt2800_link_tuner(struct rt2x00_dev
const u32 count);
void rt2800_gain_calibration(struct rt2x00_dev *rt2x00dev);
void rt2800_vco_calibration(struct rt2x00_dev *rt2x00dev);
+void rt2800_rf_self_txdc_cal(struct rt2x00_dev *rt2x00dev);
int rt2800_enable_radio(struct rt2x00_dev *rt2x00dev);
void rt2800_disable_radio(struct rt2x00_dev *rt2x00dev);
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
@@ -570,6 +570,7 @@ struct rt2x00lib_ops {
struct link_qual *qual, const u32 count);
void (*gain_calibration) (struct rt2x00_dev *rt2x00dev);
void (*vco_calibration) (struct rt2x00_dev *rt2x00dev);
+ void (*rf_self_txdc_cal) (struct rt2x00_dev *rt2x00dev);
/*
* Data queue handlers.