From: Sven Eckelmann <sven@narfation.org>
To: ath10k@lists.infradead.org
Cc: linux-wireless@vger.kernel.org,
Sven Eckelmann <seckelmann@datto.com>,
Michal Kazior <michal@plume.com>
Subject: [PATCH] ath10k: fix max antenna gain unit
Date: Tue, 11 Jun 2019 14:19:10 +0200 [thread overview]
Message-ID: <20190611121910.27643-1-sven@narfation.org> (raw)
From: Sven Eckelmann <seckelmann@datto.com>
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@datto.com>
---
Cc: Michal Kazior <michal@plume.com>
drivers/net/wireless/ath/ath10k/mac.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 9c703d287333..35d026a2772a 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -1008,7 +1008,7 @@ 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);
@@ -1450,7 +1450,7 @@ 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;
@@ -3105,7 +3105,7 @@ 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
--
2.20.1
next reply other threads:[~2019-06-11 12:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-11 12:19 Sven Eckelmann [this message]
2019-06-11 16:29 ` [PATCH] ath10k: fix max antenna gain unit Ben Greear
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