+++ /dev/null
-From: Sven Eckelmann <seckelmann@datto.com>
-Date: Tue, 11 Jun 2019 13:58:35 +0200
-Subject: ath10k: fix max antenna gain unit
-
-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>
-
-Forwarded: https://patchwork.kernel.org/patch/10986723/
-
---- a/ath10k-4.19/mac.c
-+++ b/ath10k-4.19/mac.c
-@@ -1185,7 +1185,7 @@ static int ath10k_monitor_vdev_start(str
- 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);
-
-@@ -1627,7 +1627,7 @@ static int ath10k_vdev_start_restart(str
- 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;
-
- /* CT Firmware can support 32+ VDEVS, but can only support
- * beacon-ing devs with dev ids 0 - 31 due to firmware limitations.
-@@ -3799,7 +3799,7 @@ static int ath10k_update_channel_list(st
- 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
+++ /dev/null
-From: Sven Eckelmann <seckelmann@datto.com>
-Date: Wed, 28 Nov 2018 16:16:27 +0100
-Subject: ath10k: adjust tx power reduction for US regulatory domain
-
-FCC allows maximum antenna gain of 6 dBi. 15.247(b)(4):
-
-> (4) The conducted output power limit
-> specified in paragraph (b) of this section
-> is based on the use of antennas
-> with directional gains that do not exceed
-> 6 dBi. Except as shown in paragraph
-> (c) of this section, if transmitting
-> antennas of directional gain greater
-> than 6 dBi are used, the conducted
-> output power from the intentional radiator
-> shall be reduced below the stated
-> values in paragraphs (b)(1), (b)(2),
-> and (b)(3) of this section, as appropriate,
-> by the amount in dB that the
-> directional gain of the antenna exceeds
-> 6 dBi.
-
-https://www.gpo.gov/fdsys/pkg/CFR-2013-title47-vol1/pdf/CFR-2013-title47-vol1-sec15-247.pdf
-
-Signed-off-by: Sven Eckelmann <seckelmann@datto.com>
-
-Forwarded: no
-
---- a/ath10k-4.19/mac.c
-+++ b/ath10k-4.19/mac.c
-@@ -1153,6 +1153,40 @@ static inline int ath10k_vdev_setup_sync
- return ar->last_wmi_vdev_start_status;
- }
-
-+static u32 ath10k_get_max_antenna_gain(struct ath10k *ar,
-+ u32 ch_max_antenna_gain)
-+{
-+ u32 max_antenna_gain;
-+
-+ if (ar->dfs_detector && ar->dfs_detector->region == NL80211_DFS_FCC) {
-+ /* FCC allows maximum antenna gain of 6 dBi. 15.247(b)(4):
-+ *
-+ * > (4) The conducted output power limit
-+ * > specified in paragraph (b) of this section
-+ * > is based on the use of antennas
-+ * > with directional gains that do not exceed
-+ * > 6 dBi. Except as shown in paragraph
-+ * > (c) of this section, if transmitting
-+ * > antennas of directional gain greater
-+ * > than 6 dBi are used, the conducted
-+ * > output power from the intentional radiator
-+ * > shall be reduced below the stated
-+ * > values in paragraphs (b)(1), (b)(2),
-+ * > and (b)(3) of this section, as appropriate,
-+ * > by the amount in dB that the
-+ * > directional gain of the antenna exceeds
-+ * > 6 dBi.
-+ *
-+ * https://www.gpo.gov/fdsys/pkg/CFR-2013-title47-vol1/pdf/CFR-2013-title47-vol1-sec15-247.pdf
-+ */
-+ max_antenna_gain = 6;
-+ } else {
-+ max_antenna_gain = 0;
-+ }
-+
-+ return max(ch_max_antenna_gain, max_antenna_gain);
-+}
-+
- static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
- {
- struct cfg80211_chan_def *chandef = NULL;
-@@ -1185,7 +1219,8 @@ static int ath10k_monitor_vdev_start(str
- 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;
-+ arg.channel.max_antenna_gain = ath10k_get_max_antenna_gain(ar,
-+ channel->max_antenna_gain);
-
- reinit_completion(&ar->vdev_setup_done);
-
-@@ -1627,7 +1662,8 @@ static int ath10k_vdev_start_restart(str
- 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;
-+ arg.channel.max_antenna_gain = ath10k_get_max_antenna_gain(ar,
-+ chandef->chan->max_antenna_gain);
-
- /* CT Firmware can support 32+ VDEVS, but can only support
- * beacon-ing devs with dev ids 0 - 31 due to firmware limitations.
-@@ -3799,7 +3835,8 @@ static int ath10k_update_channel_list(st
- 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;
-+ ch->max_antenna_gain = ath10k_get_max_antenna_gain(ar,
-+ channel->max_antenna_gain);
- ch->reg_class_id = 0; /* FIXME */
-
- /* FIXME: why use only legacy modes, why not any
projects / oweals / openwrt.git / commitdiff