[PATCH 3/5] phy: qcom-ufs: Add support to set phy mode

[Vivek Gautam]

Adding support to set desired UFS phy mode that can be set
from the host controller.

Signed-off-by: Vivek Gautam <vivek.gau...@codeaurora.org>
---
 drivers/phy/qualcomm/phy-qcom-ufs-i.h        |  2 ++
 drivers/phy/qualcomm/phy-qcom-ufs-qmp-14nm.c | 14 ++++++++++++++
 drivers/phy/qualcomm/phy-qcom-ufs-qmp-20nm.c | 14 ++++++++++++++
 3 files changed, 30 insertions(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-ufs-i.h 
b/drivers/phy/qualcomm/phy-qcom-ufs-i.h
index 13b02b7de30b..94326ed107c3 100644
--- a/drivers/phy/qualcomm/phy-qcom-ufs-i.h
+++ b/drivers/phy/qualcomm/phy-qcom-ufs-i.h
@@ -115,6 +115,8 @@ struct ufs_qcom_phy {
        int cached_regs_table_size;
        bool is_powered_on;
        struct ufs_qcom_phy_specific_ops *phy_spec_ops;
+
+       enum phy_mode mode;
 };
 
 /**
diff --git a/drivers/phy/qualcomm/phy-qcom-ufs-qmp-14nm.c 
b/drivers/phy/qualcomm/phy-qcom-ufs-qmp-14nm.c
index 12a1b498dc4b..af65785230b5 100644
--- a/drivers/phy/qualcomm/phy-qcom-ufs-qmp-14nm.c
+++ b/drivers/phy/qualcomm/phy-qcom-ufs-qmp-14nm.c
@@ -53,6 +53,19 @@ static int ufs_qcom_phy_qmp_14nm_exit(struct phy 
*generic_phy)
 }
 
 static
+int ufs_qcom_phy_qmp_14nm_set_mode(struct phy *generic_phy, enum phy_mode mode)
+{
+       struct ufs_qcom_phy *phy_common = get_ufs_qcom_phy(generic_phy);
+
+       phy_common->mode = PHY_MODE_INVALID;
+
+       if (mode > 0)
+               phy_common->mode = mode;
+
+       return 0;
+}
+
+static
 void ufs_qcom_phy_qmp_14nm_power_control(struct ufs_qcom_phy *phy, bool val)
 {
        writel_relaxed(val ? 0x1 : 0x0, phy->mmio + UFS_PHY_POWER_DOWN_CONTROL);
@@ -102,6 +115,7 @@ static int ufs_qcom_phy_qmp_14nm_is_pcs_ready(struct 
ufs_qcom_phy *phy_common)
        .exit           = ufs_qcom_phy_qmp_14nm_exit,
        .power_on       = ufs_qcom_phy_power_on,
        .power_off      = ufs_qcom_phy_power_off,
+       .set_mode       = ufs_qcom_phy_qmp_14nm_set_mode,
        .owner          = THIS_MODULE,
 };
 
diff --git a/drivers/phy/qualcomm/phy-qcom-ufs-qmp-20nm.c 
b/drivers/phy/qualcomm/phy-qcom-ufs-qmp-20nm.c
index 4f68acb58b73..5c18c41dbdb4 100644
--- a/drivers/phy/qualcomm/phy-qcom-ufs-qmp-20nm.c
+++ b/drivers/phy/qualcomm/phy-qcom-ufs-qmp-20nm.c
@@ -72,6 +72,19 @@ static int ufs_qcom_phy_qmp_20nm_exit(struct phy 
*generic_phy)
 }
 
 static
+int ufs_qcom_phy_qmp_20nm_set_mode(struct phy *generic_phy, enum phy_mode mode)
+{
+       struct ufs_qcom_phy *phy_common = get_ufs_qcom_phy(generic_phy);
+
+       phy_common->mode = PHY_MODE_INVALID;
+
+       if (mode > 0)
+               phy_common->mode = mode;
+
+       return 0;
+}
+
+static
 void ufs_qcom_phy_qmp_20nm_power_control(struct ufs_qcom_phy *phy, bool val)
 {
        bool hibern8_exit_after_pwr_collapse = phy->quirks &
@@ -160,6 +173,7 @@ static int ufs_qcom_phy_qmp_20nm_is_pcs_ready(struct 
ufs_qcom_phy *phy_common)
        .exit           = ufs_qcom_phy_qmp_20nm_exit,
        .power_on       = ufs_qcom_phy_power_on,
        .power_off      = ufs_qcom_phy_power_off,
+       .set_mode       = ufs_qcom_phy_qmp_20nm_set_mode,
        .owner          = THIS_MODULE,
 };
 
-- 
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