wifi: ath12k: refactor ath12k_mac_setup_channels_rates()

Currently, the MAC setup helper function is accessing the mac80211 hw
data. In the future, to support single/multi link operation, need to
decouple the mac80211 hw data from this helper function so that it can be
easy to scale these functions to support single/multi link operations. So
remove the mac80211 hw access from the ath12k_mac_setup_channels_rates()
helper function.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20231206034920.1037449-4-quic_periyasa@quicinc.com

drivers/net/wireless/ath/ath12k/mac.c

@@ -7158,9 +7158,9 @@ static u32 ath12k_get_phy_id(struct ath12k *ar, u32 band)
 }
 
 static int ath12k_mac_setup_channels_rates(struct ath12k *ar,
-					   u32 supported_bands)
+					   u32 supported_bands,
+					   struct ieee80211_supported_band *bands[])
 {
-	struct ieee80211_hw *hw = ar->hw;
 	struct ieee80211_supported_band *band;
 	struct ath12k_wmi_hal_reg_capabilities_ext_arg *reg_cap;
 	void *channels;
@@ -7186,7 +7186,7 @@ static int ath12k_mac_setup_channels_rates(struct ath12k *ar,
 		band->channels = channels;
 		band->n_bitrates = ath12k_g_rates_size;
 		band->bitrates = ath12k_g_rates;
-		hw->wiphy->bands[NL80211_BAND_2GHZ] = band;
+		bands[NL80211_BAND_2GHZ] = band;
 
 		if (ar->ab->hw_params->single_pdev_only) {
 			phy_id = ath12k_get_phy_id(ar, WMI_HOST_WLAN_2G_CAP);
@@ -7213,7 +7213,7 @@ static int ath12k_mac_setup_channels_rates(struct ath12k *ar,
 			band->channels = channels;
 			band->n_bitrates = ath12k_a_rates_size;
 			band->bitrates = ath12k_a_rates;
-			hw->wiphy->bands[NL80211_BAND_6GHZ] = band;
+			bands[NL80211_BAND_6GHZ] = band;
 			ath12k_mac_update_ch_list(ar, band,
 						  reg_cap->low_5ghz_chan,
 						  reg_cap->high_5ghz_chan);
@@ -7235,7 +7235,7 @@ static int ath12k_mac_setup_channels_rates(struct ath12k *ar,
 			band->channels = channels;
 			band->n_bitrates = ath12k_a_rates_size;
 			band->bitrates = ath12k_a_rates;
-			hw->wiphy->bands[NL80211_BAND_5GHZ] = band;
+			bands[NL80211_BAND_5GHZ] = band;
 
 			if (ar->ab->hw_params->single_pdev_only) {
 				phy_id = ath12k_get_phy_id(ar, WMI_HOST_WLAN_5G_CAP);
@@ -7414,7 +7414,8 @@ static int __ath12k_mac_register(struct ath12k *ar)
 	SET_IEEE80211_DEV(hw, ab->dev);
 
 	ret = ath12k_mac_setup_channels_rates(ar,
-					      cap->supported_bands);
+					      cap->supported_bands,
+					      hw->wiphy->bands);
 	if (ret)
 		goto err;