Configure the WriteBooster type to preserve user-space mode.
This would ensure that no user-space capacity is reduced
when write booster is enabled.
Enable WB for Qualcomm platform.
Signed-off-by: Asutosh Das <asutoshd@xxxxxxxxxxxxxx>
---
drivers/scsi/ufs/ufs-qcom.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index 19aa5c4..def1e09 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -1071,6 +1071,7 @@ static void ufs_qcom_set_caps(struct ufs_hba *hba)
hba->caps |= UFSHCD_CAP_CLK_GATING | UFSHCD_CAP_HIBERN8_WITH_CLK_GATING;
hba->caps |= UFSHCD_CAP_CLK_SCALING;
hba->caps |= UFSHCD_CAP_AUTO_BKOPS_SUSPEND;
+ hba->caps |= UFSHCD_CAP_WB_EN;
if (host->hw_ver.major >= 0x2) {
host->caps = UFS_QCOM_CAP_QUNIPRO |
@@ -1713,6 +1714,12 @@ static void ufs_qcom_config_scaling_param(struct ufs_hba *hba,
}
#endif
+static u32 ufs_qcom_wb_get_user_cap_mode(struct ufs_hba *hba)
+{
+ /* QCom prefers no user-space reduction mode */
+ return UFS_WB_BUFF_PRESERVE_USER_SPACE;
+}
+
/**
* struct ufs_hba_qcom_vops - UFS QCOM specific variant operations
*
@@ -1735,6 +1742,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
.dbg_register_dump = ufs_qcom_dump_dbg_regs,
.device_reset = ufs_qcom_device_reset,
.config_scaling_param = ufs_qcom_config_scaling_param,
+ .wb_get_user_cap_mode = ufs_qcom_wb_get_user_cap_mode,
};
/**
--
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