2019-06-07 16:45:49

by Felix Fietkau

Subject: [PATCH 1/4] mt7603: fix reading target tx power from eeprom

For the external PA (TSSI OFF) case, the target power needs to be read
from a different location in EEPROM

Signed-off-by: Felix Fietkau <[email protected]>
---
drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h | 2 ++
drivers/net/wireless/mediatek/mt76/mt7603/init.c | 4 ++++
2 files changed, 6 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h b/drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h
index f27b99b7e359..b893facfba48 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h
@@ -69,6 +69,8 @@ enum mt7603_eeprom_field {

MT_EE_CP_FT_VERSION = 0x0f0,

+ MT_EE_TX_POWER_TSSI_OFF = 0x0f2,
+
MT_EE_XTAL_FREQ_OFFSET = 0x0f4,
MT_EE_XTAL_TRIM_2_COMP = 0x0f5,
MT_EE_XTAL_TRIM_3_COMP = 0x0f6,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/init.c b/drivers/net/wireless/mediatek/mt76/mt7603/init.c
index 4e269044f8a4..2238e3daedc6 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7603/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/init.c
@@ -465,9 +465,13 @@ mt7603_init_txpower(struct mt7603_dev *dev,
u8 *eeprom = (u8 *)dev->mt76.eeprom.data;
int target_power = eeprom[MT_EE_TX_POWER_0_START_2G + 2] & ~BIT(7);
u8 *rate_power = &eeprom[MT_EE_TX_POWER_CCK];
+ bool ext_pa = eeprom[MT_EE_NIC_CONF_0 + 1] & BIT(1);
int max_offset, cur_offset;
int i;

+ if (ext_pa)
+ target_power = eeprom[MT_EE_TX_POWER_TSSI_OFF] & ~BIT(7);
+
if (target_power & BIT(6))
target_power = -(target_power & GENMASK(5, 0));

--
2.17.0

2019-06-27 10:58:38

by Felix Fietkau

Subject: [PATCH v2 1/4] mt76: mt7603: fix reading target tx power from eeprom

For the external PA (TSSI OFF) case, the target power needs to be read
from a different location in EEPROM

Signed-off-by: Felix Fietkau <[email protected]>
---
v2:
- fix patch prefix
- limit change to mt7603 (mt7628 does not have this eeprom field)

drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h | 2 ++
drivers/net/wireless/mediatek/mt76/mt7603/init.c | 4 ++++
2 files changed, 6 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h b/drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h
index f27b99b7e359..b893facfba48 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h
@@ -69,6 +69,8 @@ enum mt7603_eeprom_field {

MT_EE_CP_FT_VERSION = 0x0f0,

+ MT_EE_TX_POWER_TSSI_OFF = 0x0f2,
+
MT_EE_XTAL_FREQ_OFFSET = 0x0f4,
MT_EE_XTAL_TRIM_2_COMP = 0x0f5,
MT_EE_XTAL_TRIM_3_COMP = 0x0f6,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/init.c b/drivers/net/wireless/mediatek/mt76/mt7603/init.c
index 4e269044f8a4..43baad7fd082 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7603/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/init.c
@@ -465,9 +465,13 @@ mt7603_init_txpower(struct mt7603_dev *dev,
u8 *eeprom = (u8 *)dev->mt76.eeprom.data;
int target_power = eeprom[MT_EE_TX_POWER_0_START_2G + 2] & ~BIT(7);
u8 *rate_power = &eeprom[MT_EE_TX_POWER_CCK];
+ bool ext_pa = eeprom[MT_EE_NIC_CONF_0 + 1] & BIT(1);
int max_offset, cur_offset;
int i;

+ if (ext_pa && is_mt7603(dev))
+ target_power = eeprom[MT_EE_TX_POWER_TSSI_OFF] & ~BIT(7);
+
if (target_power & BIT(6))
target_power = -(target_power & GENMASK(5, 0));

--
2.17.0