mac80211: add patch descriptions to rt2x00 patches

Prepare patches for sending upstream by adding patch descriptions
generated from the original OpenWrt commits adding each patch.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit d4feb66048f6a8f387eedfb162a1184cdae9d756)

1 files changed, 81 insertions, 0 deletions

diff --git a/package/kernel/mac80211/patches/rt2x00/982-rt2x00-add-RF-self-TXDC-calibration.patch b/package/kernel/mac80211/patches/rt2x00/982-rt2x00-add-RF-self-TXDC-calibration.patch
new file mode 100644
index 0000000000..b74bea2020
--- /dev/null
+++ b/package/kernel/mac80211/patches/rt2x00/982-rt2x00-add-RF-self-TXDC-calibration.patch
@@ -0,0 +1,81 @@
+From: =?UTF-8?q?Tomislav=20Po=C5=BEega?= <pozega.tomislav@gmail.com>
+Date: Mon, 8 Jan 2018 13:42:27 +0100
+Subject: [PATCH] rt2x00: add RF self TXDC calibration
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Add TX self calibration based on mtk driver.
+
+Signed-off-by: Tomislav Požega <pozega.tomislav@gmail.com>
+---
+ .../net/wireless/ralink/rt2x00/rt2800lib.c    | 51 +++++++++++++++++++
+ 1 file changed, 51 insertions(+)
+
+--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
++++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+@@ -8438,6 +8438,56 @@ static void rt2800_init_rfcsr_5592(struc
+ 	rt2800_led_open_drain_enable(rt2x00dev);
+ }
+ 
++static 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");
++}
++
+ static void rt2800_bbp_core_soft_reset(struct rt2x00_dev *rt2x00dev,
+ 				       bool set_bw, bool is_ht40)
+ {
+@@ -9045,6 +9095,7 @@ 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);
+ }