OpenWrt – Rev 1
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From 269f19c848a2380db03a3f207cafb88e28d71c53 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Sun, 24 Mar 2013 19:26:28 +0100
Subject: [PATCH] rt2x00: rt2800lib: add channel configuration code for RT3883
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
---
drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 72 +++++++++++++++++++++++++++++--
1 file changed, 69 insertions(+), 3 deletions(-)
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -3902,6 +3902,36 @@ static char rt2800_txpower_to_dev(struct
return clamp_t(char, txpower, MIN_A_TXPOWER, MAX_A_TXPOWER);
}
+static void rt3883_bbp_adjust(struct rt2x00_dev *rt2x00dev,
+ struct rf_channel *rf)
+{
+ u8 bbp;
+
+ bbp = (rf->channel > 14) ? 0x48 : 0x38;
+ rt2800_bbp_write_with_rx_chain(rt2x00dev, 66, bbp);
+
+ rt2800_bbp_write(rt2x00dev, 69, 0x12);
+
+ if (rf->channel <= 14) {
+ rt2800_bbp_write(rt2x00dev, 70, 0x0a);
+ } else {
+ /* Disable CCK packet detection */
+ rt2800_bbp_write(rt2x00dev, 70, 0x00);
+ }
+
+ rt2800_bbp_write(rt2x00dev, 73, 0x10);
+
+ if (rf->channel > 14) {
+ rt2800_bbp_write(rt2x00dev, 62, 0x1d);
+ rt2800_bbp_write(rt2x00dev, 63, 0x1d);
+ rt2800_bbp_write(rt2x00dev, 64, 0x1d);
+ } else {
+ rt2800_bbp_write(rt2x00dev, 62, 0x2d);
+ rt2800_bbp_write(rt2x00dev, 63, 0x2d);
+ rt2800_bbp_write(rt2x00dev, 64, 0x2d);
+ }
+}
+
static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev,
struct ieee80211_conf *conf,
struct rf_channel *rf,
@@ -3920,6 +3950,12 @@ static void rt2800_config_channel(struct
rt2800_txpower_to_dev(rt2x00dev, rf->channel,
info->default_power3);
+ switch (rt2x00dev->chip.rt) {
+ case RT3883:
+ rt3883_bbp_adjust(rt2x00dev, rf);
+ break;
+ }
+
switch (rt2x00dev->chip.rf) {
case RF2020:
case RF3020:
@@ -4024,6 +4060,15 @@ static void rt2800_config_channel(struct
rt2800_bbp_write(rt2x00dev, 63, 0x37 - rt2x00dev->lna_gain);
rt2800_bbp_write(rt2x00dev, 64, 0x37 - rt2x00dev->lna_gain);
rt2800_bbp_write(rt2x00dev, 77, 0x98);
+ } else if (rt2x00_rt(rt2x00dev, RT3883)) {
+ rt2800_bbp_write(rt2x00dev, 62, 0x37 - rt2x00dev->lna_gain);
+ rt2800_bbp_write(rt2x00dev, 63, 0x37 - rt2x00dev->lna_gain);
+ rt2800_bbp_write(rt2x00dev, 64, 0x37 - rt2x00dev->lna_gain);
+
+ if (rt2x00dev->default_ant.rx_chain_num > 1)
+ rt2800_bbp_write(rt2x00dev, 86, 0x46);
+ else
+ rt2800_bbp_write(rt2x00dev, 86, 0);
} else {
rt2800_bbp_write(rt2x00dev, 62, 0x37 - rt2x00dev->lna_gain);
rt2800_bbp_write(rt2x00dev, 63, 0x37 - rt2x00dev->lna_gain);
@@ -4037,6 +4082,7 @@ static void rt2800_config_channel(struct
!rt2x00_rt(rt2x00dev, RT6352)) {
if (rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
rt2800_bbp_write(rt2x00dev, 82, 0x62);
+ rt2800_bbp_write(rt2x00dev, 82, 0x62);
rt2800_bbp_write(rt2x00dev, 75, 0x46);
} else {
if (rt2x00_rt(rt2x00dev, RT3593))
@@ -4045,19 +4091,22 @@ static void rt2800_config_channel(struct
rt2800_bbp_write(rt2x00dev, 82, 0x84);
rt2800_bbp_write(rt2x00dev, 75, 0x50);
}
- if (rt2x00_rt(rt2x00dev, RT3593))
+ if (rt2x00_rt(rt2x00dev, RT3593) ||
+ rt2x00_rt(rt2x00dev, RT3883))
rt2800_bbp_write(rt2x00dev, 83, 0x8a);
}
} else {
if (rt2x00_rt(rt2x00dev, RT3572))
rt2800_bbp_write(rt2x00dev, 82, 0x94);
- else if (rt2x00_rt(rt2x00dev, RT3593))
+ else if (rt2x00_rt(rt2x00dev, RT3593) ||
+ rt2x00_rt(rt2x00dev, RT3883))
rt2800_bbp_write(rt2x00dev, 82, 0x82);
else if (!rt2x00_rt(rt2x00dev, RT6352))
rt2800_bbp_write(rt2x00dev, 82, 0xf2);
- if (rt2x00_rt(rt2x00dev, RT3593))
+ if (rt2x00_rt(rt2x00dev, RT3593) ||
+ rt2x00_rt(rt2x00dev, RT3883))
rt2800_bbp_write(rt2x00dev, 83, 0x9a);
if (rt2x00_has_cap_external_lna_a(rt2x00dev))
@@ -4190,6 +4239,23 @@ static void rt2800_config_channel(struct
rt2800_bbp_write_with_rx_chain(rt2x00dev, 66, reg);
+ usleep_range(1000, 1500);
+ }
+
+ if (rt2x00_rt(rt2x00dev, RT3883)) {
+ if (!conf_is_ht40(conf))
+ rt2800_bbp_write(rt2x00dev, 105, 0x34);
+ else
+ rt2800_bbp_write(rt2x00dev, 105, 0x04);
+
+ /* AGC init */
+ if (rf->channel <= 14)
+ reg = 0x2e + rt2x00dev->lna_gain;
+ else
+ reg = 0x20 + ((rt2x00dev->lna_gain * 5) / 3);
+
+ rt2800_bbp_write_with_rx_chain(rt2x00dev, 66, reg);
+
usleep_range(1000, 1500);
}