ath10k: simplify fixed rate selection

Use the existing ieee80211_rate array instead of
definining separate one. This gets rid of the ugly
4-index offset when dealing with 5GHz band.
Signed-off-by: NMichal Kazior <michal.kazior@tieto.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath10k/mac.c

@@ -36,21 +36,19 @@
 /*********/
 
 static struct ieee80211_rate ath10k_rates[] = {
-	/* CCK */
-	{ .bitrate = 10 },
-	{ .bitrate = 20 },
-	{ .bitrate = 55 },
-	{ .bitrate = 110 },
-
-	/* OFDM */
-	{ .bitrate = 60 },
-	{ .bitrate = 90 },
-	{ .bitrate = 120 },
-	{ .bitrate = 180 },
-	{ .bitrate = 240 },
-	{ .bitrate = 360 },
-	{ .bitrate = 480 },
-	{ .bitrate = 540 },
+	{ .bitrate = 10, .hw_value = ATH10K_HW_RATE_CCK_LP_1M },
+	{ .bitrate = 20, .hw_value = ATH10K_HW_RATE_CCK_LP_2M },
+	{ .bitrate = 55, .hw_value = ATH10K_HW_RATE_CCK_LP_5_5M },
+	{ .bitrate = 110, .hw_value = ATH10K_HW_RATE_CCK_LP_11M },
+
+	{ .bitrate = 60, .hw_value = ATH10K_HW_RATE_OFDM_6M },
+	{ .bitrate = 90, .hw_value = ATH10K_HW_RATE_OFDM_9M },
+	{ .bitrate = 120, .hw_value = ATH10K_HW_RATE_OFDM_12M },
+	{ .bitrate = 180, .hw_value = ATH10K_HW_RATE_OFDM_18M },
+	{ .bitrate = 240, .hw_value = ATH10K_HW_RATE_OFDM_24M },
+	{ .bitrate = 360, .hw_value = ATH10K_HW_RATE_OFDM_36M },
+	{ .bitrate = 480, .hw_value = ATH10K_HW_RATE_OFDM_48M },
+	{ .bitrate = 540, .hw_value = ATH10K_HW_RATE_OFDM_54M },
 };
 
 #define ath10k_a_rates (ath10k_rates + 4)
@@ -5196,22 +5194,6 @@ static int ath10k_get_survey(struct ieee80211_hw *hw, int idx,
 	return ret;
 }
 
-/* Helper table for legacy fixed_rate/bitrate_mask */
-static const u8 cck_ofdm_rate[] = {
-	ATH10K_HW_RATE_CCK_LP_1M,
-	ATH10K_HW_RATE_CCK_LP_2M,
-	ATH10K_HW_RATE_CCK_LP_5_5M,
-	ATH10K_HW_RATE_CCK_LP_11M,
-	ATH10K_HW_RATE_OFDM_6M,
-	ATH10K_HW_RATE_OFDM_9M,
-	ATH10K_HW_RATE_OFDM_12M,
-	ATH10K_HW_RATE_OFDM_18M,
-	ATH10K_HW_RATE_OFDM_24M,
-	ATH10K_HW_RATE_OFDM_36M,
-	ATH10K_HW_RATE_OFDM_48M,
-	ATH10K_HW_RATE_OFDM_54M,
-};
-
 /* Check if only one bit set */
 static int ath10k_check_single_mask(u32 mask)
 {
@@ -5359,6 +5341,7 @@ ath10k_bitrate_mask_rate(struct ath10k *ar,
 			 u8 *fixed_rate,
 			 u8 *fixed_nss)
 {
+	struct ieee80211_supported_band *sband;
 	u8 rate = 0, pream = 0, nss = 0, i;
 	enum wmi_rate_preamble preamble;
 
@@ -5372,17 +5355,12 @@ ath10k_bitrate_mask_rate(struct ath10k *ar,
 	case WMI_RATE_PREAMBLE_CCK:
 	case WMI_RATE_PREAMBLE_OFDM:
 		i = ffs(mask->control[band].legacy) - 1;
+		sband = &ar->mac.sbands[band];
 
-		if (band == IEEE80211_BAND_2GHZ && i < 4)
-			pream = WMI_RATE_PREAMBLE_CCK;
-
-		if (band == IEEE80211_BAND_5GHZ)
-			i += 4;
-
-		if (i >= ARRAY_SIZE(cck_ofdm_rate))
+		if (WARN_ON(i >= sband->n_bitrates))
 			return false;
 
-		rate = cck_ofdm_rate[i];
+		rate = sband->bitrates[i].hw_value;
 		break;
 	case WMI_RATE_PREAMBLE_HT:
 		for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)