From: Ryder Lee <ryder.lee@mediatek.com>
To: Felix Fietkau <nbd@nbd.name>,
Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Cc: Roy Luo <royluo@google.com>, YF Luo <yf.luo@mediatek.com>,
Yiwei Chung <yiwei.chung@mediatek.com>,
Sean Wang <sean.wang@mediatek.com>,
<linux-wireless@vger.kernel.org>,
<linux-mediatek@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
Ryder Lee <ryder.lee@mediatek.com>
Subject: [PATCH v3] mt76: mt7615: add support for per-chain signal strength reporting
Date: Thu, 13 Jun 2019 15:13:29 +0800 [thread overview]
Message-ID: <ec6ccb9ad8e083bbc960c84adcb3164a4e190c7c.1560338170.git.ryder.lee@mediatek.com> (raw)
Fill in RX status->chain_signal to avoid empty value.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
---
Changes since v3 - use hweight8 instead.
Changes since v2 - correct calculation sequence.
---
.../net/wireless/mediatek/mt76/mt7615/mac.c | 22 ++++++++++++++++++-
.../net/wireless/mediatek/mt76/mt7615/mac.h | 5 +++++
2 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
index b60d42b5923d..1eb0e9c9970c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -13,6 +13,11 @@
#include "../dma.h"
#include "mac.h"
+static inline s8 to_rssi(u32 field, u32 rxv)
+{
+ return (FIELD_GET(field, rxv) - 220) / 2;
+}
+
static struct mt76_wcid *mt7615_rx_get_wcid(struct mt7615_dev *dev,
u8 idx, bool unicast)
{
@@ -120,6 +125,7 @@ int mt7615_mac_fill_rx(struct mt7615_dev *dev, struct sk_buff *skb)
if (rxd0 & MT_RXD0_NORMAL_GROUP_3) {
u32 rxdg0 = le32_to_cpu(rxd[0]);
u32 rxdg1 = le32_to_cpu(rxd[1]);
+ u32 rxdg3 = le32_to_cpu(rxd[3]);
u8 stbc = FIELD_GET(MT_RXV1_HT_STBC, rxdg0);
bool cck = false;
@@ -169,7 +175,21 @@ int mt7615_mac_fill_rx(struct mt7615_dev *dev, struct sk_buff *skb)
status->enc_flags |= RX_ENC_FLAG_STBC_MASK * stbc;
- /* TODO: RSSI */
+ status->chains = dev->mt76.antenna_mask;
+ status->chain_signal[0] = to_rssi(MT_RXV4_RCPI0, rxdg3);
+ status->chain_signal[1] = to_rssi(MT_RXV4_RCPI1, rxdg3);
+ status->chain_signal[2] = to_rssi(MT_RXV4_RCPI2, rxdg3);
+ status->chain_signal[3] = to_rssi(MT_RXV4_RCPI3, rxdg3);
+ status->signal = status->chain_signal[0];
+
+ for (i = 1; i < hweight8(dev->mt76.antenna_mask); i++) {
+ if (!(status->chains & BIT(i)))
+ continue;
+
+ status->signal = max(status->signal,
+ status->chain_signal[i]);
+ }
+
rxd += 6;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.h b/drivers/net/wireless/mediatek/mt76/mt7615/mac.h
index 18ad4b8a3807..b00ce8db58e9 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.h
@@ -98,6 +98,11 @@ enum rx_pkt_type {
#define MT_RXV2_GROUP_ID GENMASK(26, 21)
#define MT_RXV2_LENGTH GENMASK(20, 0)
+#define MT_RXV4_RCPI3 GENMASK(31, 24)
+#define MT_RXV4_RCPI2 GENMASK(23, 16)
+#define MT_RXV4_RCPI1 GENMASK(15, 8)
+#define MT_RXV4_RCPI0 GENMASK(7, 0)
+
enum tx_header_format {
MT_HDR_FORMAT_802_3,
MT_HDR_FORMAT_CMD,
--
2.18.0
next reply other threads:[~2019-06-13 16:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-13 7:13 Ryder Lee [this message]
2019-06-13 7:13 ` [PATCH v2 1/2] mt76: mt7615: fix incorrect settings in mesh mode Ryder Lee
2019-06-13 7:13 ` [PATCH v2 2/2] mt76: mt7615: update peer's bssid when state transition occurs Ryder Lee
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