diff mbox series

[1/3] wifi: rtw89: sar: tweak 6GHz SAR subbands span

Message ID 20241111065132.19587-2-pkshih@realtek.com (mailing list archive)
State New
Delegated to: Ping-Ke Shih
Headers show
Series wifi: rtw89: support dynamic antenna gain (DAG) | expand

Commit Message

Ping-Ke Shih Nov. 11, 2024, 6:51 a.m. UTC 
From: Kuan-Chung Chen <damon.chen@realtek.com>

Given that the 6GHz subband edges are not aligned, specific frequencies
can span two adjacent subbands. We considered the need for this
functionality outside of SAR and moved it to a common function.

No logic change for existing chips.

Signed-off-by: Kuan-Chung Chen <damon.chen@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
---
 drivers/net/wireless/realtek/rtw89/core.c | 47 +++++++++++++++++++
 drivers/net/wireless/realtek/rtw89/core.h |  9 ++++
 drivers/net/wireless/realtek/rtw89/sar.c  | 57 +++--------------------
 3 files changed, 62 insertions(+), 51 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/realtek/rtw89/core.c b/drivers/net/wireless/realtek/rtw89/core.c
index e5b2968c1431..f73704fc5f85 100644
--- a/drivers/net/wireless/realtek/rtw89/core.c
+++ b/drivers/net/wireless/realtek/rtw89/core.c
@@ -203,6 +203,53 @@  static const struct ieee80211_iface_combination rtw89_iface_combs[] = {
 	},
 };
 
+#define RTW89_6GHZ_SPAN_HEAD 6145
+#define RTW89_6GHZ_SPAN_IDX(center_freq) \
+	((((int)(center_freq) - RTW89_6GHZ_SPAN_HEAD) / 5) / 2)
+
+#define RTW89_DECL_6GHZ_SPAN(center_freq, subband_l, subband_h) \
+	[RTW89_6GHZ_SPAN_IDX(center_freq)] = { \
+		.sar_subband_low = RTW89_SAR_6GHZ_ ## subband_l, \
+		.sar_subband_high = RTW89_SAR_6GHZ_ ## subband_h, \
+	}
+
+/* Since 6GHz subbands are not edge aligned, some cases span two subbands.
+ * In the following, we describe each of them with rtw89_6ghz_span.
+ */
+static const struct rtw89_6ghz_span rtw89_overlapping_6ghz[] = {
+	RTW89_DECL_6GHZ_SPAN(6145, SUBBAND_5_L, SUBBAND_5_H),
+	RTW89_DECL_6GHZ_SPAN(6165, SUBBAND_5_L, SUBBAND_5_H),
+	RTW89_DECL_6GHZ_SPAN(6185, SUBBAND_5_L, SUBBAND_5_H),
+	RTW89_DECL_6GHZ_SPAN(6505, SUBBAND_6, SUBBAND_7_L),
+	RTW89_DECL_6GHZ_SPAN(6525, SUBBAND_6, SUBBAND_7_L),
+	RTW89_DECL_6GHZ_SPAN(6545, SUBBAND_6, SUBBAND_7_L),
+	RTW89_DECL_6GHZ_SPAN(6665, SUBBAND_7_L, SUBBAND_7_H),
+	RTW89_DECL_6GHZ_SPAN(6705, SUBBAND_7_L, SUBBAND_7_H),
+	RTW89_DECL_6GHZ_SPAN(6825, SUBBAND_7_H, SUBBAND_8),
+	RTW89_DECL_6GHZ_SPAN(6865, SUBBAND_7_H, SUBBAND_8),
+	RTW89_DECL_6GHZ_SPAN(6875, SUBBAND_7_H, SUBBAND_8),
+	RTW89_DECL_6GHZ_SPAN(6885, SUBBAND_7_H, SUBBAND_8),
+};
+
+const struct rtw89_6ghz_span *
+rtw89_get_6ghz_span(struct rtw89_dev *rtwdev, u32 center_freq)
+{
+	int idx;
+
+	if (center_freq >= RTW89_6GHZ_SPAN_HEAD) {
+		idx = RTW89_6GHZ_SPAN_IDX(center_freq);
+		/* To decrease size of rtw89_overlapping_6ghz[],
+		 * RTW89_6GHZ_SPAN_IDX() truncates the leading NULLs
+		 * to make first span as index 0 of the table. So, if center
+		 * frequency is less than the first one, it will get netative.
+		 */
+		if (idx >= 0 && idx < ARRAY_SIZE(rtw89_overlapping_6ghz))
+			return &rtw89_overlapping_6ghz[idx];
+	}
+
+	return NULL;
+}
+
 bool rtw89_ra_report_to_bitrate(struct rtw89_dev *rtwdev, u8 rpt_rate, u16 *bitrate)
 {
 	struct ieee80211_rate rate;
diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h
index 5ad32eacd0d5..f76c05513d3c 100644
--- a/drivers/net/wireless/realtek/rtw89/core.h
+++ b/drivers/net/wireless/realtek/rtw89/core.h
@@ -4597,6 +4597,13 @@  struct rtw89_sar_info {
 	};
 };
 
+struct rtw89_6ghz_span {
+	enum rtw89_sar_subband sar_subband_low;
+	enum rtw89_sar_subband sar_subband_high;
+};
+
+#define RTW89_SAR_SPAN_VALID(span) ((span)->sar_subband_high)
+
 enum rtw89_tas_state {
 	RTW89_TAS_STATE_DPR_OFF,
 	RTW89_TAS_STATE_DPR_ON,
@@ -6908,6 +6915,8 @@  struct rtw89_sta_link *rtw89_sta_set_link(struct rtw89_sta *rtwsta,
 					  unsigned int link_id);
 void rtw89_sta_unset_link(struct rtw89_sta *rtwsta, unsigned int link_id);
 void rtw89_core_set_chip_txpwr(struct rtw89_dev *rtwdev);
+const struct rtw89_6ghz_span *
+rtw89_get_6ghz_span(struct rtw89_dev *rtwdev, u32 center_freq);
 void rtw89_get_default_chandef(struct cfg80211_chan_def *chandef);
 void rtw89_get_channel_params(const struct cfg80211_chan_def *chandef,
 			      struct rtw89_chan *chan);
diff --git a/drivers/net/wireless/realtek/rtw89/sar.c b/drivers/net/wireless/realtek/rtw89/sar.c
index bcc287771b2a..871f45a6508c 100644
--- a/drivers/net/wireless/realtek/rtw89/sar.c
+++ b/drivers/net/wireless/realtek/rtw89/sar.c
@@ -42,7 +42,7 @@  static enum rtw89_sar_subband rtw89_sar_get_subband(struct rtw89_dev *rtwdev,
 
 	/* freq 6875 (ch 185, 20MHz) spans RTW89_SAR_6GHZ_SUBBAND_7_H
 	 * and RTW89_SAR_6GHZ_SUBBAND_8, so directly describe it with
-	 * struct rtw89_sar_span in the following.
+	 * struct rtw89_6ghz_span.
 	 */
 
 	case 6895 ... 7115:
@@ -50,63 +50,18 @@  static enum rtw89_sar_subband rtw89_sar_get_subband(struct rtw89_dev *rtwdev,
 	}
 }
 
-struct rtw89_sar_span {
-	enum rtw89_sar_subband subband_low;
-	enum rtw89_sar_subband subband_high;
-};
-
-#define RTW89_SAR_SPAN_VALID(span) ((span)->subband_high)
-
-#define RTW89_SAR_6GHZ_SPAN_HEAD 6145
-#define RTW89_SAR_6GHZ_SPAN_IDX(center_freq) \
-	((((int)(center_freq) - RTW89_SAR_6GHZ_SPAN_HEAD) / 5) / 2)
-
-#define RTW89_DECL_SAR_6GHZ_SPAN(center_freq, subband_l, subband_h) \
-	[RTW89_SAR_6GHZ_SPAN_IDX(center_freq)] = { \
-		.subband_low = RTW89_SAR_6GHZ_ ## subband_l, \
-		.subband_high = RTW89_SAR_6GHZ_ ## subband_h, \
-	}
-
-/* Since 6GHz SAR subbands are not edge aligned, some cases span two SAR
- * subbands. In the following, we describe each of them with rtw89_sar_span.
- */
-static const struct rtw89_sar_span rtw89_sar_overlapping_6ghz[] = {
-	RTW89_DECL_SAR_6GHZ_SPAN(6145, SUBBAND_5_L, SUBBAND_5_H),
-	RTW89_DECL_SAR_6GHZ_SPAN(6165, SUBBAND_5_L, SUBBAND_5_H),
-	RTW89_DECL_SAR_6GHZ_SPAN(6185, SUBBAND_5_L, SUBBAND_5_H),
-	RTW89_DECL_SAR_6GHZ_SPAN(6505, SUBBAND_6, SUBBAND_7_L),
-	RTW89_DECL_SAR_6GHZ_SPAN(6525, SUBBAND_6, SUBBAND_7_L),
-	RTW89_DECL_SAR_6GHZ_SPAN(6545, SUBBAND_6, SUBBAND_7_L),
-	RTW89_DECL_SAR_6GHZ_SPAN(6665, SUBBAND_7_L, SUBBAND_7_H),
-	RTW89_DECL_SAR_6GHZ_SPAN(6705, SUBBAND_7_L, SUBBAND_7_H),
-	RTW89_DECL_SAR_6GHZ_SPAN(6825, SUBBAND_7_H, SUBBAND_8),
-	RTW89_DECL_SAR_6GHZ_SPAN(6865, SUBBAND_7_H, SUBBAND_8),
-	RTW89_DECL_SAR_6GHZ_SPAN(6875, SUBBAND_7_H, SUBBAND_8),
-	RTW89_DECL_SAR_6GHZ_SPAN(6885, SUBBAND_7_H, SUBBAND_8),
-};
-
 static int rtw89_query_sar_config_common(struct rtw89_dev *rtwdev,
 					 u32 center_freq, s32 *cfg)
 {
 	struct rtw89_sar_cfg_common *rtwsar = &rtwdev->sar.cfg_common;
-	const struct rtw89_sar_span *span = NULL;
 	enum rtw89_sar_subband subband_l, subband_h;
-	int idx;
-
-	if (center_freq >= RTW89_SAR_6GHZ_SPAN_HEAD) {
-		idx = RTW89_SAR_6GHZ_SPAN_IDX(center_freq);
-		/* To decrease size of rtw89_sar_overlapping_6ghz[],
-		 * RTW89_SAR_6GHZ_SPAN_IDX() truncates the leading NULLs
-		 * to make first span as index 0 of the table. So, if center
-		 * frequency is less than the first one, it will get netative.
-		 */
-		if (idx >= 0 && idx < ARRAY_SIZE(rtw89_sar_overlapping_6ghz))
-			span = &rtw89_sar_overlapping_6ghz[idx];
-	}
+	const struct rtw89_6ghz_span *span;
+
+	span = rtw89_get_6ghz_span(rtwdev, center_freq);
 
 	if (span && RTW89_SAR_SPAN_VALID(span)) {
-		subband_l = span->subband_low;
-		subband_h = span->subband_high;
+		subband_l = span->sar_subband_low;
+		subband_h = span->sar_subband_high;
 	} else {
 		subband_l = rtw89_sar_get_subband(rtwdev, center_freq);
 		subband_h = subband_l;