From: Sven Eckelmann <seckelmann@xxxxxxxxx>
[ Upstream commit 0a491167fe0cf9f26062462de2a8688b96125d48 ]
Most of the txpower for the ath10k firmware is stored as twicepower (0.5 dB
steps). This isn't the case for max_antenna_gain - which is still expected
by the firmware as dB.
The firmware is converting it from dB to the internal (twicepower)
representation when it calculates the limits of a channel. This can be seen
in tpc_stats when configuring "12" as max_antenna_gain. Instead of the
expected 12 (6 dB), the tpc_stats shows 24 (12 dB).
Tested on QCA9888 and IPQ4019 with firmware 10.4-3.5.3-00057.
Fixes: 02256930d9b8 ("ath10k: use proper tx power unit")
Signed-off-by: Sven Eckelmann <seckelmann@xxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20190611172131.6064-1-sven@xxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wireless/ath/ath10k/mac.c | 6 +++---
drivers/net/wireless/ath/ath10k/wmi.h | 3 +++
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 603f817ae3a59..9daaacf789d60 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -1044,7 +1044,7 @@ static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
arg.channel.min_power = 0;
arg.channel.max_power = channel->max_power * 2;
arg.channel.max_reg_power = channel->max_reg_power * 2;
- arg.channel.max_antenna_gain = channel->max_antenna_gain * 2;
+ arg.channel.max_antenna_gain = channel->max_antenna_gain;
reinit_completion(&ar->vdev_setup_done);
reinit_completion(&ar->vdev_delete_done);
@@ -1490,7 +1490,7 @@ static int ath10k_vdev_start_restart(struct ath10k_vif *arvif,
arg.channel.min_power = 0;
arg.channel.max_power = chandef->chan->max_power * 2;
arg.channel.max_reg_power = chandef->chan->max_reg_power * 2;
- arg.channel.max_antenna_gain = chandef->chan->max_antenna_gain * 2;
+ arg.channel.max_antenna_gain = chandef->chan->max_antenna_gain;
if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
arg.ssid = arvif->u.ap.ssid;
@@ -3149,7 +3149,7 @@ static int ath10k_update_channel_list(struct ath10k *ar)
ch->min_power = 0;
ch->max_power = channel->max_power * 2;
ch->max_reg_power = channel->max_reg_power * 2;
- ch->max_antenna_gain = channel->max_antenna_gain * 2;
+ ch->max_antenna_gain = channel->max_antenna_gain;
ch->reg_class_id = 0; /* FIXME */
/* FIXME: why use only legacy modes, why not any
diff --git a/drivers/net/wireless/ath/ath10k/wmi.h b/drivers/net/wireless/ath/ath10k/wmi.h
index 761bc4a7064df..de22396d085ce 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.h
+++ b/drivers/net/wireless/ath/ath10k/wmi.h
@@ -2045,7 +2045,9 @@ struct wmi_channel {
union {
__le32 reginfo1;
struct {
+ /* note: power unit is 1 dBm */
u8 antenna_max;
+ /* note: power unit is 0.5 dBm */
u8 max_tx_power;
} __packed;
} __packed;
@@ -2065,6 +2067,7 @@ struct wmi_channel_arg {
u32 min_power;
u32 max_power;
u32 max_reg_power;
+ /* note: power unit is 1 dBm */
u32 max_antenna_gain;
u32 reg_class_id;
enum wmi_phy_mode mode;
--
2.33.0
