[PATCH v1 2/3] scsi: ufs: dwc: Rename amd-versal2 read/write PHY API and move to dwc common file
From: Minda Chen
Date: Tue Apr 21 2026 - 05:16:41 EST
AMD versal2 UFS using designware ufs mipi PHY. The read/write PHY
register API are common functions for designware ufs PHY. For other
vendors reuse the code, move to common ufshcd-dwc.c file.
Signed-off-by: Minda Chen <minda.chen@xxxxxxxxxxxxxxxx>
---
drivers/ufs/host/ufs-amd-versal2.c | 85 ++++++------------------------
drivers/ufs/host/ufshcd-dwc.c | 53 +++++++++++++++++++
drivers/ufs/host/ufshcd-dwc.h | 2 +
3 files changed, 72 insertions(+), 68 deletions(-)
diff --git a/drivers/ufs/host/ufs-amd-versal2.c b/drivers/ufs/host/ufs-amd-versal2.c
index 6c454ae8a9c8..0727b5e58be6 100644
--- a/drivers/ufs/host/ufs-amd-versal2.c
+++ b/drivers/ufs/host/ufs-amd-versal2.c
@@ -43,57 +43,6 @@ struct ufs_versal2_host {
u8 ctlecompval1;
};
-static int ufs_versal2_phy_reg_write(struct ufs_hba *hba, u32 addr, u32 val)
-{
- static struct ufshcd_dme_attr_val phy_write_attrs[] = {
- { UIC_ARG_MIB(CBCREGADDRLSB), 0, DME_LOCAL },
- { UIC_ARG_MIB(CBCREGADDRMSB), 0, DME_LOCAL },
- { UIC_ARG_MIB(CBCREGWRLSB), 0, DME_LOCAL },
- { UIC_ARG_MIB(CBCREGWRMSB), 0, DME_LOCAL },
- { UIC_ARG_MIB(CBCREGRDWRSEL), 1, DME_LOCAL },
- { UIC_ARG_MIB(VS_MPHYCFGUPDT), 1, DME_LOCAL }
- };
-
- phy_write_attrs[0].mib_val = (u8)addr;
- phy_write_attrs[1].mib_val = (u8)(addr >> 8);
- phy_write_attrs[2].mib_val = (u8)val;
- phy_write_attrs[3].mib_val = (u8)(val >> 8);
-
- return ufshcd_dwc_dme_set_attrs(hba, phy_write_attrs, ARRAY_SIZE(phy_write_attrs));
-}
-
-static int ufs_versal2_phy_reg_read(struct ufs_hba *hba, u32 addr, u32 *val)
-{
- u32 mib_val;
- int ret;
- static struct ufshcd_dme_attr_val phy_read_attrs[] = {
- { UIC_ARG_MIB(CBCREGADDRLSB), 0, DME_LOCAL },
- { UIC_ARG_MIB(CBCREGADDRMSB), 0, DME_LOCAL },
- { UIC_ARG_MIB(CBCREGRDWRSEL), 0, DME_LOCAL },
- { UIC_ARG_MIB(VS_MPHYCFGUPDT), 1, DME_LOCAL }
- };
-
- phy_read_attrs[0].mib_val = (u8)addr;
- phy_read_attrs[1].mib_val = (u8)(addr >> 8);
-
- ret = ufshcd_dwc_dme_set_attrs(hba, phy_read_attrs, ARRAY_SIZE(phy_read_attrs));
- if (ret)
- return ret;
-
- ret = ufshcd_dme_get(hba, UIC_ARG_MIB(CBCREGRDLSB), &mib_val);
- if (ret)
- return ret;
-
- *val = mib_val;
- ret = ufshcd_dme_get(hba, UIC_ARG_MIB(CBCREGRDMSB), &mib_val);
- if (ret)
- return ret;
-
- *val |= (mib_val << 8);
-
- return 0;
-}
-
static int ufs_versal2_enable_phy(struct ufs_hba *hba)
{
u32 offset, reg;
@@ -162,64 +111,64 @@ static int ufs_versal2_setup_phy(struct ufs_hba *hba)
u32 reg;
/* Bypass RX-AFE offset calibrations (ATT/CTLE) */
- ret = ufs_versal2_phy_reg_read(hba, FAST_FLAGS(0), ®);
+ ret = ufs_dwc_phy_reg_read(hba, FAST_FLAGS(0), ®);
if (ret)
return ret;
reg |= MPHY_FAST_RX_AFE_CAL;
- ret = ufs_versal2_phy_reg_write(hba, FAST_FLAGS(0), reg);
+ ret = ufs_dwc_phy_reg_write(hba, FAST_FLAGS(0), reg);
if (ret)
return ret;
- ret = ufs_versal2_phy_reg_read(hba, FAST_FLAGS(1), ®);
+ ret = ufs_dwc_phy_reg_read(hba, FAST_FLAGS(1), ®);
if (ret)
return ret;
reg |= MPHY_FAST_RX_AFE_CAL;
- ret = ufs_versal2_phy_reg_write(hba, FAST_FLAGS(1), reg);
+ ret = ufs_dwc_phy_reg_write(hba, FAST_FLAGS(1), reg);
if (ret)
return ret;
/* Program ATT and CTLE compensation values */
if (host->attcompval0) {
- ret = ufs_versal2_phy_reg_write(hba, RX_AFE_ATT_IDAC(0), host->attcompval0);
+ ret = ufs_dwc_phy_reg_write(hba, RX_AFE_ATT_IDAC(0), host->attcompval0);
if (ret)
return ret;
}
if (host->attcompval1) {
- ret = ufs_versal2_phy_reg_write(hba, RX_AFE_ATT_IDAC(1), host->attcompval1);
+ ret = ufs_dwc_phy_reg_write(hba, RX_AFE_ATT_IDAC(1), host->attcompval1);
if (ret)
return ret;
}
if (host->ctlecompval0) {
- ret = ufs_versal2_phy_reg_write(hba, RX_AFE_CTLE_IDAC(0), host->ctlecompval0);
+ ret = ufs_dwc_phy_reg_write(hba, RX_AFE_CTLE_IDAC(0), host->ctlecompval0);
if (ret)
return ret;
}
if (host->ctlecompval1) {
- ret = ufs_versal2_phy_reg_write(hba, RX_AFE_CTLE_IDAC(1), host->ctlecompval1);
+ ret = ufs_dwc_phy_reg_write(hba, RX_AFE_CTLE_IDAC(1), host->ctlecompval1);
if (ret)
return ret;
}
- ret = ufs_versal2_phy_reg_read(hba, FW_CALIB_CCFG(0), ®);
+ ret = ufs_dwc_phy_reg_read(hba, FW_CALIB_CCFG(0), ®);
if (ret)
return ret;
reg |= MPHY_FW_CALIB_CFG_VAL;
- ret = ufs_versal2_phy_reg_write(hba, FW_CALIB_CCFG(0), reg);
+ ret = ufs_dwc_phy_reg_write(hba, FW_CALIB_CCFG(0), reg);
if (ret)
return ret;
- ret = ufs_versal2_phy_reg_read(hba, FW_CALIB_CCFG(1), ®);
+ ret = ufs_dwc_phy_reg_read(hba, FW_CALIB_CCFG(1), ®);
if (ret)
return ret;
reg |= MPHY_FW_CALIB_CFG_VAL;
- return ufs_versal2_phy_reg_write(hba, FW_CALIB_CCFG(1), reg);
+ return ufs_dwc_phy_reg_write(hba, FW_CALIB_CCFG(1), reg);
}
static int ufs_versal2_phy_init(struct ufs_hba *hba)
@@ -406,7 +355,7 @@ static int ufs_versal2_phy_ratesel(struct ufs_hba *hba, u32 activelanes, u32 rx_
for (lane = 0; lane < activelanes; lane++) {
time_left = TIMEOUT_MICROSEC;
- ret = ufs_versal2_phy_reg_read(hba, RX_OVRD_IN_1(lane), ®);
+ ret = ufs_dwc_phy_reg_read(hba, RX_OVRD_IN_1(lane), ®);
if (ret)
return ret;
@@ -416,12 +365,12 @@ static int ufs_versal2_phy_ratesel(struct ufs_hba *hba, u32 activelanes, u32 rx_
else
reg &= ~MPHY_RX_OVRD_VAL;
- ret = ufs_versal2_phy_reg_write(hba, RX_OVRD_IN_1(lane), reg);
+ ret = ufs_dwc_phy_reg_write(hba, RX_OVRD_IN_1(lane), reg);
if (ret)
return ret;
do {
- ret = ufs_versal2_phy_reg_read(hba, RX_PCS_OUT(lane), ®);
+ ret = ufs_dwc_phy_reg_read(hba, RX_PCS_OUT(lane), ®);
if (ret)
return ret;
@@ -486,12 +435,12 @@ static int ufs_versal2_pwr_change_notify(struct ufs_hba *hba, enum ufs_notify_ch
/* Remove rx_req override */
for (lane = 0; lane < dev_req_params->lane_tx; lane++) {
- ret = ufs_versal2_phy_reg_read(hba, RX_OVRD_IN_1(lane), ®);
+ ret = ufs_dwc_phy_reg_read(hba, RX_OVRD_IN_1(lane), ®);
if (ret)
return ret;
reg &= ~MPHY_RX_OVRD_EN;
- ret = ufs_versal2_phy_reg_write(hba, RX_OVRD_IN_1(lane), reg);
+ ret = ufs_dwc_phy_reg_write(hba, RX_OVRD_IN_1(lane), reg);
if (ret)
return ret;
}
diff --git a/drivers/ufs/host/ufshcd-dwc.c b/drivers/ufs/host/ufshcd-dwc.c
index 21b1cf912dcc..b057a78e151c 100644
--- a/drivers/ufs/host/ufshcd-dwc.c
+++ b/drivers/ufs/host/ufshcd-dwc.c
@@ -15,6 +15,59 @@
#include "ufshcd-dwc.h"
#include "ufshci-dwc.h"
+int ufs_dwc_phy_reg_write(struct ufs_hba *hba, u32 addr, u32 val)
+{
+ static struct ufshcd_dme_attr_val phy_write_attrs[] = {
+ { UIC_ARG_MIB(CBCREGADDRLSB), 0, DME_LOCAL },
+ { UIC_ARG_MIB(CBCREGADDRMSB), 0, DME_LOCAL },
+ { UIC_ARG_MIB(CBCREGWRLSB), 0, DME_LOCAL },
+ { UIC_ARG_MIB(CBCREGWRMSB), 0, DME_LOCAL },
+ { UIC_ARG_MIB(CBCREGRDWRSEL), 1, DME_LOCAL },
+ { UIC_ARG_MIB(VS_MPHYCFGUPDT), 1, DME_LOCAL }
+ };
+
+ phy_write_attrs[0].mib_val = (u8)addr;
+ phy_write_attrs[1].mib_val = (u8)(addr >> 8);
+ phy_write_attrs[2].mib_val = (u8)val;
+ phy_write_attrs[3].mib_val = (u8)(val >> 8);
+
+ return ufshcd_dwc_dme_set_attrs(hba, phy_write_attrs, ARRAY_SIZE(phy_write_attrs));
+}
+EXPORT_SYMBOL(ufs_dwc_phy_reg_write);
+
+int ufs_dwc_phy_reg_read(struct ufs_hba *hba, u32 addr, u32 *val)
+{
+ u32 mib_val;
+ int ret;
+ static struct ufshcd_dme_attr_val phy_read_attrs[] = {
+ { UIC_ARG_MIB(CBCREGADDRLSB), 0, DME_LOCAL },
+ { UIC_ARG_MIB(CBCREGADDRMSB), 0, DME_LOCAL },
+ { UIC_ARG_MIB(CBCREGRDWRSEL), 0, DME_LOCAL },
+ { UIC_ARG_MIB(VS_MPHYCFGUPDT), 1, DME_LOCAL }
+ };
+
+ phy_read_attrs[0].mib_val = (u8)addr;
+ phy_read_attrs[1].mib_val = (u8)(addr >> 8);
+
+ ret = ufshcd_dwc_dme_set_attrs(hba, phy_read_attrs, ARRAY_SIZE(phy_read_attrs));
+ if (ret)
+ return ret;
+
+ ret = ufshcd_dme_get(hba, UIC_ARG_MIB(CBCREGRDLSB), &mib_val);
+ if (ret)
+ return ret;
+
+ *val = mib_val;
+ ret = ufshcd_dme_get(hba, UIC_ARG_MIB(CBCREGRDMSB), &mib_val);
+ if (ret)
+ return ret;
+
+ *val |= (mib_val << 8);
+
+ return 0;
+}
+EXPORT_SYMBOL(ufs_dwc_phy_reg_read);
+
int ufshcd_dwc_dme_set_attrs(struct ufs_hba *hba,
const struct ufshcd_dme_attr_val *v, int n)
{
diff --git a/drivers/ufs/host/ufshcd-dwc.h b/drivers/ufs/host/ufshcd-dwc.h
index c618bb914904..8091f186a9b3 100644
--- a/drivers/ufs/host/ufshcd-dwc.h
+++ b/drivers/ufs/host/ufshcd-dwc.h
@@ -68,4 +68,6 @@ int ufshcd_dwc_link_startup_notify(struct ufs_hba *hba,
enum ufs_notify_change_status status);
int ufshcd_dwc_dme_set_attrs(struct ufs_hba *hba,
const struct ufshcd_dme_attr_val *v, int n);
+int ufs_dwc_phy_reg_write(struct ufs_hba *hba, u32 addr, u32 val);
+int ufs_dwc_phy_reg_read(struct ufs_hba *hba, u32 addr, u32 *val);
#endif /* End of Header */
--
2.17.1