[PATCH 04/11] wifi: rtw89: rfk: add H2C command to trigger RX DCK

[Ping-Ke Shih <pkshih@realtek.com>]

RX DCK is receiver DC calibration. This will calibrate DC offset to
reflect correct received signal strength indicator, so mechanisms like CCA
can have normalized values.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
---
 drivers/net/wireless/realtek/rtw89/fw.c | 43 +++++++++++++++++++++++++
 drivers/net/wireless/realtek/rtw89/fw.h | 13 ++++++++
 2 files changed, 56 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw89/fw.c b/drivers/net/wireless/realtek/rtw89/fw.c
index d2c166ee5c89..f1239b00479d 100644
--- a/drivers/net/wireless/realtek/rtw89/fw.c
+++ b/drivers/net/wireless/realtek/rtw89/fw.c
@@ -4628,6 +4628,49 @@ int rtw89_fw_h2c_rf_iqk(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy_idx)
 	return ret;
 }
 
+int rtw89_fw_h2c_rf_rxdck(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy_idx)
+{
+	const struct rtw89_chan *chan = rtw89_chan_get(rtwdev,
+						       RTW89_SUB_ENTITY_0);
+	struct rtw89_h2c_rf_rxdck *h2c;
+	u32 len = sizeof(*h2c);
+	struct sk_buff *skb;
+	int ret;
+
+	skb = rtw89_fw_h2c_alloc_skb_with_hdr(rtwdev, len);
+	if (!skb) {
+		rtw89_err(rtwdev, "failed to alloc skb for h2c RF RXDCK\n");
+		return -ENOMEM;
+	}
+	skb_put(skb, len);
+	h2c = (struct rtw89_h2c_rf_rxdck *)skb->data;
+
+	h2c->len = len;
+	h2c->phy = phy_idx;
+	h2c->is_afe = false;
+	h2c->kpath = RF_AB;
+	h2c->cur_band = chan->band_type;
+	h2c->cur_bw = chan->band_width;
+	h2c->cur_ch = chan->channel;
+	h2c->rxdck_dbg_en = rtw89_debug_is_enabled(rtwdev, RTW89_DBG_RFK);
+
+	rtw89_h2c_pkt_set_hdr(rtwdev, skb, FWCMD_TYPE_H2C,
+			      H2C_CAT_OUTSRC, H2C_CL_OUTSRC_RF_FW_RFK,
+			      H2C_FUNC_RFK_RXDCK_OFFLOAD, 0, 0, len);
+
+	ret = rtw89_h2c_tx(rtwdev, skb, false);
+	if (ret) {
+		rtw89_err(rtwdev, "failed to send h2c\n");
+		goto fail;
+	}
+
+	return 0;
+fail:
+	dev_kfree_skb_any(skb);
+
+	return ret;
+}
+
 int rtw89_fw_h2c_raw_with_hdr(struct rtw89_dev *rtwdev,
 			      u8 h2c_class, u8 h2c_func, u8 *buf, u16 len,
 			      bool rack, bool dack)
diff --git a/drivers/net/wireless/realtek/rtw89/fw.h b/drivers/net/wireless/realtek/rtw89/fw.h
index e9c7f9532b0b..7e803abe47c6 100644
--- a/drivers/net/wireless/realtek/rtw89/fw.h
+++ b/drivers/net/wireless/realtek/rtw89/fw.h
@@ -3936,6 +3936,7 @@ enum rtw89_mcc_h2c_func {
 
 enum rtw89_rfk_offload_h2c_func {
 	H2C_FUNC_RFK_IQK_OFFLOAD = 0x1,
+	H2C_FUNC_RFK_RXDCK_OFFLOAD = 0x6,
 	H2C_FUNC_RFK_PRE_NOTIFY = 0x8,
 };
 
@@ -3988,6 +3989,17 @@ struct rtw89_h2c_rf_iqk {
 	__le32 dbcc;
 } __packed;
 
+struct rtw89_h2c_rf_rxdck {
+	u8 len;
+	u8 phy;
+	u8 is_afe;
+	u8 kpath;
+	u8 cur_band;
+	u8 cur_bw;
+	u8 cur_ch;
+	u8 rxdck_dbg_en;
+} __packed;
+
 enum rtw89_rf_log_type {
 	RTW89_RF_RUN_LOG = 0,
 	RTW89_RF_RPT_LOG = 1,
@@ -4176,6 +4188,7 @@ int rtw89_fw_h2c_rf_ntfy_mcc(struct rtw89_dev *rtwdev);
 int rtw89_fw_h2c_rf_pre_ntfy(struct rtw89_dev *rtwdev,
 			     enum rtw89_phy_idx phy_idx);
 int rtw89_fw_h2c_rf_iqk(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy_idx);
+int rtw89_fw_h2c_rf_rxdck(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy_idx);
 int rtw89_fw_h2c_raw_with_hdr(struct rtw89_dev *rtwdev,
 			      u8 h2c_class, u8 h2c_func, u8 *buf, u16 len,
 			      bool rack, bool dack);
-- 
2.25.1