From f1f12f9894c48dc8284762bc71e4a3ed5caf546f Mon Sep 17 00:00:00 2001
From: Stanislaw Gruszka <sgruszka@redhat.com>
Date: Mon, 30 Jan 2012 16:17:59 +0100
Subject: [PATCH] rt2800: radio 3xxxx: channel switch RX/TX calibration fixes
Synchronize code with Ralink driver:
2011_0719_RT3070_RT3370_RT5370_RT5372_Linux_STA_V2.5.0.3_DPO
Based on functions:
RT30xx_ChipSwitchChannel
RT33xx_ChipSwitchChannel
NICInitRT3370RFRegisters
and defines from:
include/chip/rt33xx.h
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/rt2x00/rt2800.h | 8 ++++++++
drivers/net/wireless/rt2x00/rt2800lib.c | 19 ++++++++++++++++---
2 files changed, 24 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/rt2x00/rt2800.h b/drivers/net/wireless/rt2x00/rt2800.h
index abf2ae5881648..c92fb2eee920e 100644
--- a/drivers/net/wireless/rt2x00/rt2800.h
+++ b/drivers/net/wireless/rt2x00/rt2800.h
@@ -1871,6 +1871,13 @@ struct mac_iveiv_entry {
*/
#define RFCSR23_FREQ_OFFSET FIELD8(0x7f)
+/*
+ * RFCSR 24:
+ */
+#define RFCSR24_TX_AGC_FC FIELD8(0x1f)
+#define RFCSR24_TX_H20M FIELD8(0x20)
+#define RFCSR24_TX_CALIB FIELD8(0x7f)
+
/*
* RFCSR 27:
*/
@@ -1892,6 +1899,7 @@ struct mac_iveiv_entry {
*/
#define RFCSR31_RX_AGC_FC FIELD8(0x1f)
#define RFCSR31_RX_H20M FIELD8(0x20)
+#define RFCSR31_RX_CALIB FIELD8(0x7f)
/*
* RFCSR 38:
diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index 0076bc7a9b36e..c326e7b1c374b 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -1645,7 +1645,7 @@ static void rt2800_config_channel_rf3xxx(struct rt2x00_dev *rt2x00dev,
struct rf_channel *rf,
struct channel_info *info)
{
- u8 rfcsr;
+ u8 rfcsr, calib_tx, calib_rx;
rt2800_rfcsr_write(rt2x00dev, 2, rf->rf1);
@@ -1710,8 +1710,21 @@ static void rt2800_config_channel_rf3xxx(struct rt2x00_dev *rt2x00dev,
rt2x00_set_field8(&rfcsr, RFCSR23_FREQ_OFFSET, rt2x00dev->freq_offset);
rt2800_rfcsr_write(rt2x00dev, 23, rfcsr);
- rt2800_rfcsr_write(rt2x00dev, 24,
- rt2x00dev->calibration[conf_is_ht40(conf)]);
+ if (rt2x00_rt(rt2x00dev, RT3390)) {
+ calib_tx = conf_is_ht40(conf) ? 0x68 : 0x4f;
+ calib_rx = conf_is_ht40(conf) ? 0x6f : 0x4f;
+ } else {
+ calib_tx = rt2x00dev->calibration[conf_is_ht40(conf)];
+ calib_rx = rt2x00dev->calibration[conf_is_ht40(conf)];
+ }
+
+ rt2800_rfcsr_read(rt2x00dev, 24, &rfcsr);
+ rt2x00_set_field8(&rfcsr, RFCSR24_TX_CALIB, calib_tx);
+ rt2800_rfcsr_write(rt2x00dev, 24, rfcsr);
+
+ rt2800_rfcsr_read(rt2x00dev, 31, &rfcsr);
+ rt2x00_set_field8(&rfcsr, RFCSR31_RX_CALIB, calib_rx);
+ rt2800_rfcsr_write(rt2x00dev, 31, rfcsr);
rt2800_rfcsr_read(rt2x00dev, 7, &rfcsr);
rt2x00_set_field8(&rfcsr, RFCSR7_RF_TUNING, 1);