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openwrtv4/package/kernel/mac80211/patches/380-0011-ath10k-fix-spectral-scan-for-QCA9984-and-QCA9888-chi.patch
Ansuel Smith 2dcd955aea mac80211: backport and update patches for ath10k 
This commit refreshes and updates the VHT160 ath10k support fix patches
and adds a number of backports from ath-next:

 * 8ed05ed06fca ath10k: handle tdls peer events
 * 229329ff345f ath10k: wmi: modify svc bitmap parsing for wcn3990
 * 14d65775687c ath10k: advertise TDLS wider bandwidth support for 5GHz
 * bc64d05220f3 ath10k: debugfs support to get final TPC stats for 10.4 variants
 * 8b2d93dd2261 ath10k: Fix kernel panic while using worker (ath10k_sta_rc_update_wk)
 * 4b190675ad06 ath10k: fix kernel panic while reading tpc_stats
 * be8cce96f14d ath10k: add support to configure channel dwell time
 * f40105e67478 ath: add support to get the detected radar specifications
 * 6f6eb1bcbeff ath10k: DFS Host Confirmation
 * 260e629bbf44 ath10k: fix memory leak of tpc_stats
 * 38441fb6fcbb ath10k: support use of channel 173
 * 2e9bcd0d7324 ath10k: fix spectral scan for QCA9984 and QCA9888 chipsets

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
[move backported patches in the 3xx number space, bring in upstream order,
 replace incomplete patch files with git format-patch ones, rewrite commit
 message, fix subject]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2018-07-22 22:25:33 +02:00

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From 2e9bcd0d73243f5e49daf92508d64cc33c30da01 Mon Sep 17 00:00:00 2001
From: Karthikeyan Periyasamy <periyasa@codeaurora.org>
Date: Tue, 29 May 2018 17:01:13 +0530
Subject: [PATCH] ath10k: fix spectral scan for QCA9984 and QCA9888 chipsets
The spectral scan has been always broken on QCA9984 and QCA9888.
Introduce a hardware parameter 'spectral_bin_offset' to resolve this issue for
QCA9984 and QCA9888 chipsets. For other chipsets, the hardware parameter
'spectral_bin_offset' is zero so that existing behaviour is retained as it is.
In QCA9984 and QCA9888 chipsets, hardware param value 'spectral_bin_discard'
is 12 bytes. This 12 bytes is derived as the sum of segment index (4 bytes),
extra bins before the actual data (4 bytes) and extra bins after the actual
data (4 bytes). Always discarding (12 bytes) happens at end of the samples and
incorrect samples got dumped, so that user can find incorrect arrangement
samples in spectral scan dump.
To fix this issue, we have to discard first 8 bytes and last 4 bytes in every
samples, so totally 12 bytes are discarded. In every sample we need to consider
the offset while taking the actual spectral data. For QCA9984, QCA9888 the
offset is 8 bytes (segment index + extra bins before actual data).
Hardware tested: QCA9984 and QCA9888
Firmware tested: 10.4-3.5.3-00053
Signed-off-by: Karthikeyan Periyasamy <periyasa@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/ath/ath10k/core.c | 13 +++++++++++++
drivers/net/wireless/ath/ath10k/hw.h | 3 +++
drivers/net/wireless/ath/ath10k/spectral.c | 2 +-
3 files changed, 17 insertions(+), 1 deletion(-)
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -72,6 +72,7 @@ static const struct ath10k_hw_params ath
.hw_ops = &qca988x_ops,
.decap_align_bytes = 4,
.spectral_bin_discard = 0,
+ .spectral_bin_offset = 0,
.vht160_mcs_rx_highest = 0,
.vht160_mcs_tx_highest = 0,
.n_cipher_suites = 8,
@@ -96,6 +97,7 @@ static const struct ath10k_hw_params ath
.hw_ops = &qca988x_ops,
.decap_align_bytes = 4,
.spectral_bin_discard = 0,
+ .spectral_bin_offset = 0,
.vht160_mcs_rx_highest = 0,
.vht160_mcs_tx_highest = 0,
.n_cipher_suites = 8,
@@ -119,6 +121,7 @@ static const struct ath10k_hw_params ath
.hw_ops = &qca988x_ops,
.decap_align_bytes = 4,
.spectral_bin_discard = 0,
+ .spectral_bin_offset = 0,
.vht160_mcs_rx_highest = 0,
.vht160_mcs_tx_highest = 0,
.n_cipher_suites = 8,
@@ -142,6 +145,7 @@ static const struct ath10k_hw_params ath
.hw_ops = &qca988x_ops,
.decap_align_bytes = 4,
.spectral_bin_discard = 0,
+ .spectral_bin_offset = 0,
.vht160_mcs_rx_highest = 0,
.vht160_mcs_tx_highest = 0,
.n_cipher_suites = 8,
@@ -165,6 +169,8 @@ static const struct ath10k_hw_params ath
.hw_ops = &qca988x_ops,
.decap_align_bytes = 4,
.spectral_bin_discard = 0,
+ .spectral_bin_offset = 0,
+ .spectral_bin_offset = 0,
.vht160_mcs_rx_highest = 0,
.vht160_mcs_tx_highest = 0,
.n_cipher_suites = 8,
@@ -191,6 +197,7 @@ static const struct ath10k_hw_params ath
.target_cpu_freq = 176000000,
.decap_align_bytes = 4,
.spectral_bin_discard = 0,
+ .spectral_bin_offset = 0,
.vht160_mcs_rx_highest = 0,
.vht160_mcs_tx_highest = 0,
.n_cipher_suites = 8,
@@ -220,6 +227,7 @@ static const struct ath10k_hw_params ath
.hw_ops = &qca99x0_ops,
.decap_align_bytes = 1,
.spectral_bin_discard = 4,
+ .spectral_bin_offset = 0,
.vht160_mcs_rx_highest = 0,
.vht160_mcs_tx_highest = 0,
.n_cipher_suites = 11,
@@ -250,6 +258,7 @@ static const struct ath10k_hw_params ath
.hw_ops = &qca99x0_ops,
.decap_align_bytes = 1,
.spectral_bin_discard = 12,
+ .spectral_bin_offset = 8,
/* Can do only 2x2 VHT160 or 80+80. 1560Mbps is 4x4 80Mhz
* or 2x2 160Mhz, long-guard-interval.
@@ -283,6 +292,7 @@ static const struct ath10k_hw_params ath
.hw_ops = &qca99x0_ops,
.decap_align_bytes = 1,
.spectral_bin_discard = 12,
+ .spectral_bin_offset = 8,
/* Can do only 1x1 VHT160 or 80+80. 780Mbps is 2x2 80Mhz or
* 1x1 160Mhz, long-guard-interval.
@@ -310,6 +320,7 @@ static const struct ath10k_hw_params ath
.hw_ops = &qca988x_ops,
.decap_align_bytes = 4,
.spectral_bin_discard = 0,
+ .spectral_bin_offset = 0,
.vht160_mcs_rx_highest = 0,
.vht160_mcs_tx_highest = 0,
.n_cipher_suites = 8,
@@ -335,6 +346,7 @@ static const struct ath10k_hw_params ath
.target_cpu_freq = 176000000,
.decap_align_bytes = 4,
.spectral_bin_discard = 0,
+ .spectral_bin_offset = 0,
.vht160_mcs_rx_highest = 0,
.vht160_mcs_tx_highest = 0,
.n_cipher_suites = 8,
@@ -365,6 +377,7 @@ static const struct ath10k_hw_params ath
.hw_ops = &qca99x0_ops,
.decap_align_bytes = 1,
.spectral_bin_discard = 4,
+ .spectral_bin_offset = 0,
.vht160_mcs_rx_highest = 0,
.vht160_mcs_tx_highest = 0,
.n_cipher_suites = 11,
--- a/drivers/net/wireless/ath/ath10k/hw.h
+++ b/drivers/net/wireless/ath/ath10k/hw.h
@@ -553,6 +553,9 @@ struct ath10k_hw_params {
/* Number of ciphers supported (i.e First N) in cipher_suites array */
int n_cipher_suites;
+
+ /* Number of bytes to be the offset for each FFT sample */
+ int spectral_bin_offset;
};
struct htt_rx_desc;
--- a/drivers/net/wireless/ath/ath10k/spectral.c
+++ b/drivers/net/wireless/ath/ath10k/spectral.c
@@ -145,7 +145,7 @@ int ath10k_spectral_process_fft(struct a
fft_sample->noise = __cpu_to_be16(phyerr->nf_chains[chain_idx]);
bins = (u8 *)fftr;
- bins += sizeof(*fftr);
+ bins += sizeof(*fftr) + ar->hw_params.spectral_bin_offset;
fft_sample->tsf = __cpu_to_be64(tsf);
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