rtw88: 8723d: some chips don't support LDPC

Some chips are not able to receive LDPC packets. Add an attribute
to rtw_chip_info to determine if the LDPC capability in [ht/vht]_cap
should be advertised or not.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200504105010.10780-6-yhchuang@realtek.com

drivers/net/wireless/realtek/rtw88/main.c

@@ -933,8 +933,11 @@ static void rtw_init_ht_cap(struct rtw_dev *rtwdev,
 	ht_cap->cap = 0;
 	ht_cap->cap |= IEEE80211_HT_CAP_SGI_20 |
 			IEEE80211_HT_CAP_MAX_AMSDU |
-			IEEE80211_HT_CAP_LDPC_CODING |
 			(1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
+
+	if (rtw_chip_has_rx_ldpc(rtwdev))
+		ht_cap->cap |= IEEE80211_HT_CAP_LDPC_CODING;
+
 	if (efuse->hw_cap.bw & BIT(RTW_CHANNEL_WIDTH_40))
 		ht_cap->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
 				IEEE80211_HT_CAP_DSSSCCK40 |
@@ -968,7 +971,6 @@ static void rtw_init_vht_cap(struct rtw_dev *rtwdev,
 
 	vht_cap->vht_supported = true;
 	vht_cap->cap = IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
-		       IEEE80211_VHT_CAP_RXLDPC |
 		       IEEE80211_VHT_CAP_SHORT_GI_80 |
 		       IEEE80211_VHT_CAP_TXSTBC |
 		       IEEE80211_VHT_CAP_RXSTBC_1 |
@@ -981,6 +983,9 @@ static void rtw_init_vht_cap(struct rtw_dev *rtwdev,
 	vht_cap->cap |= (rtwdev->hal.bfee_sts_cap <<
 			IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
 
+	if (rtw_chip_has_rx_ldpc(rtwdev))
+		vht_cap->cap |= IEEE80211_VHT_CAP_RXLDPC;
+
 	mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
 		  IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 |
 		  IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 |

drivers/net/wireless/realtek/rtw88/main.h

@@ -1085,6 +1085,7 @@ struct rtw_chip_info {
 	u8 dig_min;
 	u8 txgi_factor;
 	bool is_pwr_by_rate_dec;
+	bool rx_ldpc;
 	u8 max_power_index;
 
 	bool ht_supported;
@@ -1743,6 +1744,11 @@ static inline bool rtw_chip_wcpu_11ac(struct rtw_dev *rtwdev)
 	return rtwdev->chip->wlan_cpu == RTW_WCPU_11AC;
 }
 
+static inline bool rtw_chip_has_rx_ldpc(struct rtw_dev *rtwdev)
+{
+	return rtwdev->chip->rx_ldpc;
+}
+
 void rtw_get_channel_params(struct cfg80211_chan_def *chandef,
 			    struct rtw_channel_params *ch_param);
 bool check_hw_ready(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 target);

drivers/net/wireless/realtek/rtw88/rtw8723d.c

@@ -1039,6 +1039,7 @@ struct rtw_chip_info rtw8723d_hw_spec = {
 	.rf_tbl = {&rtw8723d_rf_a_tbl},
 	.rfe_defs = rtw8723d_rfe_defs,
 	.rfe_defs_size = ARRAY_SIZE(rtw8723d_rfe_defs),
+	.rx_ldpc = false,
 };
 EXPORT_SYMBOL(rtw8723d_hw_spec);
 

drivers/net/wireless/realtek/rtw88/rtw8822b.c

@@ -2447,6 +2447,7 @@ struct rtw_chip_info rtw8822b_hw_spec = {
 	.iqk_threshold = 8,
 	.bfer_su_max_num = 2,
 	.bfer_mu_max_num = 1,
+	.rx_ldpc = true,
 
 	.coex_para_ver = 0x19062706,
 	.bt_desired_ver = 0x6,

drivers/net/wireless/realtek/rtw88/rtw8822c.c

@@ -4312,6 +4312,7 @@ struct rtw_chip_info rtw8822c_hw_spec = {
 	.iqk_threshold = 8,
 	.bfer_su_max_num = 2,
 	.bfer_mu_max_num = 1,
+	.rx_ldpc = true,
 
 #ifdef CONFIG_PM
 	.wow_fw_name = "rtw88/rtw8822c_wow_fw.bin",