From: Baochen Qiang <bqiang@xxxxxxxxxxxxxx>
For QCA6390, one PCI related clock drifts sometimes, and it makes
PCI link difficult to quit L1ss. Current implementation fixed this
by configuring some related regs using ath11k_pci_fix_l1ss.
WCN6855 does not have this clock drift problem, so no need to set
these regs.
Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-01720.1-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1
Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1
Signed-off-by: Baochen Qiang <bqiang@xxxxxxxxxxxxxx>
Signed-off-by: Jouni Malinen <jouni@xxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath11k/core.c | 5 +++++
drivers/net/wireless/ath/ath11k/hw.h | 1 +
drivers/net/wireless/ath/ath11k/pci.c | 3 ++-
3 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c
index fd8941905fdb..4a1051418f33 100644
--- a/drivers/net/wireless/ath/ath11k/core.c
+++ b/drivers/net/wireless/ath/ath11k/core.c
@@ -70,6 +70,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
.cold_boot_calib = true,
.supports_suspend = false,
.hal_desc_sz = sizeof(struct hal_rx_desc_ipq8074),
+ .fix_l1ss = true,
},
{
.hw_rev = ATH11K_HW_IPQ6018_HW10,
@@ -110,6 +111,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
.cold_boot_calib = true,
.supports_suspend = false,
.hal_desc_sz = sizeof(struct hal_rx_desc_ipq8074),
+ .fix_l1ss = true,
},
{
.name = "qca6390 hw2.0",
@@ -149,6 +151,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
.cold_boot_calib = false,
.supports_suspend = true,
.hal_desc_sz = sizeof(struct hal_rx_desc_ipq8074),
+ .fix_l1ss = true,
},
{
.name = "qcn9074 hw1.0",
@@ -186,6 +189,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
.cold_boot_calib = false,
.supports_suspend = false,
.hal_desc_sz = sizeof(struct hal_rx_desc_qcn9074),
+ .fix_l1ss = true,
},
{
.name = "wcn6855 hw2.0",
@@ -225,6 +229,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
.cold_boot_calib = false,
.supports_suspend = true,
.hal_desc_sz = sizeof(struct hal_rx_desc_wcn6855),
+ .fix_l1ss = false,
},
};
diff --git a/drivers/net/wireless/ath/ath11k/hw.h b/drivers/net/wireless/ath/ath11k/hw.h
index be62f0c2e25e..62f5978b3005 100644
--- a/drivers/net/wireless/ath/ath11k/hw.h
+++ b/drivers/net/wireless/ath/ath11k/hw.h
@@ -162,6 +162,7 @@ struct ath11k_hw_params {
bool cold_boot_calib;
bool supports_suspend;
u32 hal_desc_sz;
+ bool fix_l1ss;
};
struct ath11k_hw_ops {
diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c
index d33b5d66b494..9fe42194f488 100644
--- a/drivers/net/wireless/ath/ath11k/pci.c
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -434,7 +434,8 @@ static void ath11k_pci_sw_reset(struct ath11k_base *ab, bool power_on)
ath11k_pci_enable_ltssm(ab);
ath11k_pci_clear_all_intrs(ab);
ath11k_pci_set_wlaon_pwr_ctrl(ab);
- ath11k_pci_fix_l1ss(ab);
+ if (ab->hw_params.fix_l1ss)
+ ath11k_pci_fix_l1ss(ab);
}
ath11k_mhi_clear_vector(ab);
--
2.25.1
