ath10k: detect the number of spatial streams supported by hw
Until now ath10k assumed 3 spatial streams.
However some devices support only 2 spatial
streams.
This patch improves performance on devices that
don't support 3 spatial streams.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index 5e42460..1cbcb2e 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -868,6 +868,13 @@
(__le32_to_cpu(ev->sw_version_1) & 0xffff0000) >> 16;
ar->fw_version_build = (__le32_to_cpu(ev->sw_version_1) & 0x0000ffff);
ar->phy_capability = __le32_to_cpu(ev->phy_capability);
+ ar->num_rf_chains = __le32_to_cpu(ev->num_rf_chains);
+
+ if (ar->num_rf_chains > WMI_MAX_SPATIAL_STREAM) {
+ ath10k_warn("hardware advertises support for more spatial streams than it should (%d > %d)\n",
+ ar->num_rf_chains, WMI_MAX_SPATIAL_STREAM);
+ ar->num_rf_chains = WMI_MAX_SPATIAL_STREAM;
+ }
ar->ath_common.regulatory.current_rd =
__le32_to_cpu(ev->hal_reg_capabilities.eeprom_rd);
@@ -892,7 +899,7 @@
}
ath10k_dbg(ATH10K_DBG_WMI,
- "wmi event service ready sw_ver 0x%08x sw_ver1 0x%08x abi_ver %u phy_cap 0x%08x ht_cap 0x%08x vht_cap 0x%08x vht_supp_msc 0x%08x sys_cap_info 0x%08x mem_reqs %u\n",
+ "wmi event service ready sw_ver 0x%08x sw_ver1 0x%08x abi_ver %u phy_cap 0x%08x ht_cap 0x%08x vht_cap 0x%08x vht_supp_msc 0x%08x sys_cap_info 0x%08x mem_reqs %u num_rf_chains %u\n",
__le32_to_cpu(ev->sw_version),
__le32_to_cpu(ev->sw_version_1),
__le32_to_cpu(ev->abi_version),
@@ -901,7 +908,8 @@
__le32_to_cpu(ev->vht_cap_info),
__le32_to_cpu(ev->vht_supp_mcs),
__le32_to_cpu(ev->sys_cap_info),
- __le32_to_cpu(ev->num_mem_reqs));
+ __le32_to_cpu(ev->num_mem_reqs),
+ __le32_to_cpu(ev->num_rf_chains));
complete(&ar->wmi.service_ready);
}