2022-09-27 06:31:39

by Ping-Ke Shih

[permalink] [raw]
Subject: [PATCH v2 5/9] wifi: rtw89: pci: add to do PCI auto calibration

8852be needs this with n times calibration to correct hardware clock.

Signed-off-by: Ping-Ke Shih <[email protected]>
---
drivers/net/wireless/realtek/rtw89/pci.c | 18 ++++++++++++++++++
drivers/net/wireless/realtek/rtw89/pci.h | 3 +++
2 files changed, 21 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw89/pci.c b/drivers/net/wireless/realtek/rtw89/pci.c
index 957f4e550a7ef..b52edf2cf7434 100644
--- a/drivers/net/wireless/realtek/rtw89/pci.c
+++ b/drivers/net/wireless/realtek/rtw89/pci.c
@@ -1874,6 +1874,18 @@ __get_target(struct rtw89_dev *rtwdev, u16 *target, enum rtw89_pcie_phy phy_rate
return 0;
}

+static int rtw89_pci_autok_x(struct rtw89_dev *rtwdev)
+{
+ int ret;
+
+ if (rtwdev->chip->chip_id != RTL8852B)
+ return 0;
+
+ ret = rtw89_write16_mdio_mask(rtwdev, RAC_REG_FLD_0, BAC_AUTOK_N_MASK,
+ PCIE_AUTOK_4, PCIE_PHY_GEN1);
+ return ret;
+}
+
static int rtw89_pci_auto_refclk_cal(struct rtw89_dev *rtwdev, bool autook_en)
{
enum rtw89_pcie_phy phy_rate;
@@ -2452,6 +2464,12 @@ static int rtw89_pci_ops_mac_pre_init(struct rtw89_dev *rtwdev)
rtw89_pci_hci_ldo(rtwdev);
rtw89_pci_dphy_delay(rtwdev);

+ ret = rtw89_pci_autok_x(rtwdev);
+ if (ret) {
+ rtw89_err(rtwdev, "[ERR] pcie autok_x fail %d\n", ret);
+ return ret;
+ }
+
ret = rtw89_pci_auto_refclk_cal(rtwdev, false);
if (ret) {
rtw89_err(rtwdev, "[ERR] pcie autok fail %d\n", ret);
diff --git a/drivers/net/wireless/realtek/rtw89/pci.h b/drivers/net/wireless/realtek/rtw89/pci.h
index e49ffc9cf7903..179740607778a 100644
--- a/drivers/net/wireless/realtek/rtw89/pci.h
+++ b/drivers/net/wireless/realtek/rtw89/pci.h
@@ -23,6 +23,9 @@
#define PCIE_DPHY_DLY_25US 0x1
#define RAC_ANA19 0x19
#define B_PCIE_BIT_RD_SEL BIT(2)
+#define RAC_REG_FLD_0 0x1D
+#define BAC_AUTOK_N_MASK GENMASK(3, 2)
+#define PCIE_AUTOK_4 0x3
#define RAC_ANA1F 0x1F
#define RAC_ANA24 0x24
#define B_AX_DEGLITCH GENMASK(11, 8)
--
2.25.1