All of lore.kernel.org
 help / color / mirror / Atom feed
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


WARNING: multiple messages have this Message-ID (diff)
From: Sven Eckelmann <sven@narfation.org>
To: ath10k@lists.infradead.org
Cc: Michal Kazior <michal@plume.com>,
	linux-wireless@vger.kernel.org,
	Sven Eckelmann <seckelmann@datto.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


_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k

             reply	other threads:[~2019-06-11 12:19 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-11 12:19 Sven Eckelmann [this message]
2019-06-11 12:19 ` [PATCH] ath10k: fix max antenna gain unit Sven Eckelmann
2019-06-11 16:29 ` Ben Greear
2019-06-11 16:29   ` Ben Greear

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190611121910.27643-1-sven@narfation.org \
    --to=sven@narfation.org \
    --cc=ath10k@lists.infradead.org \
    --cc=linux-wireless@vger.kernel.org \
    --cc=michal@plume.com \
    --cc=seckelmann@datto.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.