From: "Rafał Miłecki" <zajec5@gmail.com>
To: linux-wireless@vger.kernel.org,
"John W. Linville" <linville@tuxdriver.com>
Cc: bcm43xx-dev@lists.berlios.de, "Rafał Miłecki" <zajec5@gmail.com>
Subject: [PATCH 07/11] b43: N-PHY: adjust gain table
Date: Tue, 9 Feb 2010 21:04:39 +0100 [thread overview]
Message-ID: <1265745883-3392-8-git-send-email-zajec5@gmail.com> (raw)
In-Reply-To: <1265745883-3392-2-git-send-email-zajec5@gmail.com>
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---
drivers/net/wireless/b43/phy_n.c | 58 +++++++++++++++++++++++++++++++++++++-
1 files changed, 57 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c
index 4ff09b8..835d0da 100644
--- a/drivers/net/wireless/b43/phy_n.c
+++ b/drivers/net/wireless/b43/phy_n.c
@@ -837,6 +837,62 @@ static void b43_nphy_spur_workaround(struct b43_wldev *dev)
b43_nphy_stay_in_carrier_search(dev, 0);
}
+/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/AdjustLnaGainTbl */
+static void b43_nphy_adjust_lna_gain_table(struct b43_wldev *dev)
+{
+ struct b43_phy_n *nphy = dev->phy.n;
+
+ u8 i;
+ s16 tmp;
+ u16 data[4];
+ s16 gain[2];
+ u16 minmax[2];
+ u16 lna_gain[4] = { -2, 10, 19, 25 };
+
+ if (nphy->hang_avoid)
+ b43_nphy_stay_in_carrier_search(dev, 1);
+
+ if (nphy->gain_boost) {
+ if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) {
+ gain[0] = 6;
+ gain[1] = 6;
+ } else {
+ tmp = 40370 - 315 * nphy->radio_chanspec.channel;
+ gain[0] = ((tmp >> 13) + ((tmp >> 12) & 1));
+ tmp = 23242 - 224 * nphy->radio_chanspec.channel;
+ gain[1] = ((tmp >> 13) + ((tmp >> 12) & 1));
+ }
+ } else {
+ gain[0] = 0;
+ gain[1] = 0;
+ }
+
+ for (i = 0; i < 2; i++) {
+ if (nphy->elna_gain_config) {
+ data[0] = 19 + gain[i];
+ data[1] = 25 + gain[i];
+ data[2] = 25 + gain[i];
+ data[3] = 25 + gain[i];
+ } else {
+ data[0] = lna_gain[0] + gain[i];
+ data[1] = lna_gain[1] + gain[i];
+ data[2] = lna_gain[2] + gain[i];
+ data[3] = lna_gain[3] + gain[i];
+ }
+ b43_ntab_write_bulk(dev, B43_NTAB16(10, 8), 4, data);
+
+ minmax[i] = 23 + gain[i];
+ }
+
+ b43_phy_maskset(dev, B43_NPHY_C1_MINMAX_GAIN, ~B43_NPHY_C1_MINGAIN,
+ minmax[0] << B43_NPHY_C1_MINGAIN_SHIFT);
+ b43_phy_maskset(dev, B43_NPHY_C2_MINMAX_GAIN, ~B43_NPHY_C2_MINGAIN,
+ minmax[1] << B43_NPHY_C2_MINGAIN_SHIFT);
+
+ if (nphy->hang_avoid)
+ b43_nphy_stay_in_carrier_search(dev, 0);
+}
+
/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/WorkaroundsGainCtrl */
static void b43_nphy_gain_crtl_workarounds(struct b43_wldev *dev)
{
@@ -921,7 +977,7 @@ static void b43_nphy_gain_crtl_workarounds(struct b43_wldev *dev)
b43_phy_write(dev, B43_NPHY_TABLE_DATALO,
(code << 8 | 0x7C));
- /* TODO: b43_nphy_adjust_lna_gain_table(dev); */
+ b43_nphy_adjust_lna_gain_table(dev);
if (nphy->elna_gain_config) {
b43_phy_write(dev, B43_NPHY_TABLE_ADDR, 0x0808);
--
1.6.4.2
next prev parent reply other threads:[~2010-02-09 20:05 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-09 20:04 [PATCH 01/11] b43: N-PHY: add some registers and structs definitions Rafał Miłecki
2010-02-09 20:04 ` [PATCH 02/11] b43: N-PHY: initialize super switch Rafał Miłecki
2010-02-09 20:04 ` [PATCH 03/11] b43: N-PHY: turn radio on/off (rfkill) Rafał Miłecki
2010-02-09 20:04 ` [PATCH 04/11] b43: N-PHY: update writing channel-specific radio registers Rafał Miłecki
2010-02-09 20:04 ` [PATCH 05/11] b43: N-PHY: update post init of 2055 radio Rafał Miłecki
2010-02-09 20:04 ` [PATCH 06/11] b43: N-PHY: switch to chanspec struct Rafał Miłecki
2010-02-09 20:04 ` Rafał Miłecki [this message]
2010-02-09 20:04 ` [PATCH 08/11] b43: implement writing to MMIO shared memory Rafał Miłecki
2010-02-09 22:59 ` Michael Buesch
2010-02-27 11:09 ` Rafał Miłecki
2010-02-27 14:50 ` Michael Buesch
2010-02-09 20:04 ` [PATCH 09/11] b43: N-PHY: isloate 2055 radio setup Rafał Miłecki
2010-02-09 23:01 ` Michael Buesch
2010-02-09 20:04 ` [PATCH 10/11] b43: N-PHY: implement chanspec setup Rafał Miłecki
2010-02-09 20:04 ` [PATCH 11/11] b43: N-PHY: switch to chanspec ops Rafał Miłecki
2010-02-09 20:23 ` Larry Finger
2010-02-09 23:02 ` [PATCH 01/11] b43: N-PHY: add some registers and structs definitions Michael Buesch
2010-02-15 19:30 ` John W. Linville
2010-02-19 16:12 ` Rafał Miłecki
2010-02-27 11:12 ` Rafał Miłecki
2010-02-27 14:51 ` Michael Buesch
2010-02-28 1:37 ` Rafał Miłecki
2010-02-28 11:46 ` Michael Buesch
2010-02-19 14:54 ` Johannes Berg
2010-02-19 15:49 ` Larry Finger
2010-02-19 16:23 ` Johannes Berg
2010-02-19 16:40 ` Larry Finger
2010-02-19 17:02 ` Johannes Berg
2010-02-19 17:06 ` Gábor Stefanik
2010-02-19 17:09 ` Johannes Berg
2010-02-19 18:21 ` Gábor Stefanik
2010-02-19 18:24 ` Johannes Berg
2010-02-19 18:33 ` Gábor Stefanik
2010-02-19 18:41 ` Johannes Berg
2010-02-19 18:10 ` Larry Finger
2010-02-19 18:19 ` Johannes Berg
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