wifi: rtw89: phy: handle C2H event for PS mode report

Introduce support for processing the new PS C2H report, enabling
detailed debugging of low-power state hardware changes.

Signed-off-by: Eric Huang <echuang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20260117044157.2392958-3-pkshih@realtek.com

4 files changed, 81 insertions, 0 deletions

diff --git a/drivers/net/wireless/realtek/rtw89/debug.h b/drivers/net/wireless/realtek/rtw89/debug.h
index a364e7adb079..7cdceb24f52d 100644
--- a/drivers/net/wireless/realtek/rtw89/debug.h
+++ b/drivers/net/wireless/realtek/rtw89/debug.h
@@ -31,6 +31,7 @@ enum rtw89_debug_mask {
 	RTW89_DBG_CHAN = BIT(20),
 	RTW89_DBG_ACPI = BIT(21),
 	RTW89_DBG_EDCCA = BIT(22),
+	RTW89_DBG_PS = BIT(23),
 
 	RTW89_DBG_UNEXP = BIT(31),
 };
diff --git a/drivers/net/wireless/realtek/rtw89/fw.h b/drivers/net/wireless/realtek/rtw89/fw.h
index 018b3bed57d2..12e798f01df7 100644
--- a/drivers/net/wireless/realtek/rtw89/fw.h
+++ b/drivers/net/wireless/realtek/rtw89/fw.h
@@ -3829,6 +3829,26 @@ struct rtw89_c2h_ra_rpt {
 #define RTW89_C2H_RA_RPT_W3_MD_SEL_B2 BIT(15)
 #define RTW89_C2H_RA_RPT_W3_BW_B2 BIT(16)
 
+struct rtw89_c2h_lps_rpt {
+	struct rtw89_c2h_hdr hdr;
+	u8 type;
+	u8 cnt_bbcr;
+	u8 cnt_bbmcucr;
+	u8 cnt_rfcr;
+	u8 data[];
+	/*
+	 * The layout of data:
+	 *   u8 info[][4], size = total_len - size of below fields
+	 *   __le16 bbcr_addr[], size = cnt_bbcr
+	 *   __le32 bbcr_data[], size = cnt_bbcr
+	 *   __le16 bbmcucr_addr[], size = cnt_bbmcucr
+	 *   __le32 bbmcucr_data[], size = cnt_bbmcucr
+	 *   __le16 rfcr_addr[],   size = cnt_rfcr
+	 *   __le32 rfcr_data_a[], size = cnt_rfcr
+	 *   __le32 rfcr_data_b[], size = cnt_rfcr
+	 */
+} __packed;
+
 struct rtw89_c2h_fw_scan_rpt {
 	struct rtw89_c2h_hdr hdr;
 	u8 phy_idx;
diff --git a/drivers/net/wireless/realtek/rtw89/phy.c b/drivers/net/wireless/realtek/rtw89/phy.c
index d311de093425..6fd903b44bdb 100644
--- a/drivers/net/wireless/realtek/rtw89/phy.c
+++ b/drivers/net/wireless/realtek/rtw89/phy.c
@@ -3340,6 +3340,64 @@ rtw89_phy_c2h_lowrt_rty(struct rtw89_dev *rtwdev, struct sk_buff *c2h, u32 len)
 }
 
 static void
+rtw89_phy_c2h_lps_rpt(struct rtw89_dev *rtwdev, struct sk_buff *c2h, u32 len)
+{
+	const struct rtw89_c2h_lps_rpt *c2h_rpt = (const void *)c2h->data;
+	const __le32 *data_a, *data_b;
+	u16 len_info, cr_len, idx;
+	const __le16 *addr;
+	const u8 *info;
+
+	/* elements size of BBCR/BBMCUCR/RFCR are 6/6/10 bytes respectively */
+	cr_len = c2h_rpt->cnt_bbcr * 6 +
+		 c2h_rpt->cnt_bbmcucr * 6 +
+		 c2h_rpt->cnt_rfcr * 10;
+	len_info = len - (sizeof(*c2h_rpt) + cr_len);
+
+	if (len < sizeof(*c2h_rpt) + cr_len || len_info % 4 != 0) {
+		rtw89_debug(rtwdev, RTW89_DBG_PS,
+			    "Invalid LPS RPT len(%d) TYPE(%d) CRCNT: BB(%d) MCU(%d) RF(%d)\n",
+			    len, c2h_rpt->type, c2h_rpt->cnt_bbcr,
+			    c2h_rpt->cnt_bbmcucr, c2h_rpt->cnt_rfcr);
+		return;
+	}
+
+	rtw89_debug(rtwdev, RTW89_DBG_PS,
+		    "LPS RPT TYPE(%d), CRCNT: BB(%d) MCU(%d) RF(%d)\n",
+		    c2h_rpt->type, c2h_rpt->cnt_bbcr,
+		    c2h_rpt->cnt_bbmcucr, c2h_rpt->cnt_rfcr);
+
+	info = &c2h_rpt->data[0];
+	for (idx = 0; idx < len_info; idx += 4, info += 4)
+		rtw89_debug(rtwdev, RTW89_DBG_PS,
+			    "BB LPS INFO (%02d) - 0x%02x,0x%02x,0x%02x,0x%02x\n",
+			    idx, info[3], info[2], info[1], info[0]);
+
+	addr = (const void *)(info);
+	data_a = (const void *)(addr + c2h_rpt->cnt_bbcr);
+	for (idx = 0; idx < c2h_rpt->cnt_bbcr; idx++, addr++, data_a++)
+		rtw89_debug(rtwdev, RTW89_DBG_PS,
+			    "LPS BB CR - 0x%04x=0x%08x\n",
+			    le16_to_cpu(*addr), le32_to_cpu(*data_a));
+
+	addr = (const void *)data_a;
+	data_a = (const void *)(addr + c2h_rpt->cnt_bbmcucr);
+	for (idx = 0; idx < c2h_rpt->cnt_bbmcucr; idx++, addr++, data_a++)
+		rtw89_debug(rtwdev, RTW89_DBG_PS,
+			    "LPS BBMCU - 0x%04x=0x%08x\n",
+			    le16_to_cpu(*addr), le32_to_cpu(*data_a));
+
+	addr = (const void *)data_a;
+	data_a = (const void *)(addr + c2h_rpt->cnt_rfcr);
+	data_b = (const void *)(data_a + c2h_rpt->cnt_rfcr);
+	for (idx = 0; idx < c2h_rpt->cnt_rfcr; idx++, addr++, data_a++, data_b++)
+		rtw89_debug(rtwdev, RTW89_DBG_PS,
+			    "LPS RFCR - 0x%04x=0x%05x,0x%05x\n",
+			    le16_to_cpu(*addr), le32_to_cpu(*data_a),
+			    le32_to_cpu(*data_b));
+}
+
+static void
 rtw89_phy_c2h_fw_scan_rpt(struct rtw89_dev *rtwdev, struct sk_buff *c2h, u32 len)
 {
 	const struct rtw89_c2h_fw_scan_rpt *c2h_rpt =
@@ -3360,6 +3418,7 @@ void (* const rtw89_phy_c2h_dm_handler[])(struct rtw89_dev *rtwdev,
 	[RTW89_PHY_C2H_DM_FUNC_SIGB] = NULL,
 	[RTW89_PHY_C2H_DM_FUNC_LOWRT_RTY] = rtw89_phy_c2h_lowrt_rty,
 	[RTW89_PHY_C2H_DM_FUNC_MCC_DIG] = NULL,
+	[RTW89_PHY_C2H_DM_FUNC_LPS] = rtw89_phy_c2h_lps_rpt,
 	[RTW89_PHY_C2H_DM_FUNC_FW_SCAN] = rtw89_phy_c2h_fw_scan_rpt,
 };
 
diff --git a/drivers/net/wireless/realtek/rtw89/phy.h b/drivers/net/wireless/realtek/rtw89/phy.h
index 4e985a604338..0c5224780e84 100644
--- a/drivers/net/wireless/realtek/rtw89/phy.h
+++ b/drivers/net/wireless/realtek/rtw89/phy.h
@@ -165,6 +165,7 @@ enum rtw89_phy_c2h_dm_func {
 	RTW89_PHY_C2H_DM_FUNC_SIGB,
 	RTW89_PHY_C2H_DM_FUNC_LOWRT_RTY,
 	RTW89_PHY_C2H_DM_FUNC_MCC_DIG,
+	RTW89_PHY_C2H_DM_FUNC_LPS = 0x9,
 	RTW89_PHY_C2H_DM_FUNC_FW_SCAN = 0xc,
 	RTW89_PHY_C2H_DM_FUNC_NUM,
 };