[PATCH 12/15] scsi: ufs: ufs-exynos: add pre/post_hce_enable drv callbacks

[Chanho Park <chanho61.park@xxxxxxxxxxx>]

This patch adds driver-specific pre/post_hce_enable callbacks to execute
extra initializations before and after hce_enable_notify callback.

Signed-off-by: Chanho Park <chanho61.park@xxxxxxxxxxx>
---
 drivers/scsi/ufs/ufs-exynos.c | 10 ++++++++++
 drivers/scsi/ufs/ufs-exynos.h |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/drivers/scsi/ufs/ufs-exynos.c b/drivers/scsi/ufs/ufs-exynos.c
index 81b8b8d9915a..9669afe8f1f4 100644
--- a/drivers/scsi/ufs/ufs-exynos.c
+++ b/drivers/scsi/ufs/ufs-exynos.c
@@ -1141,6 +1141,12 @@ static int exynos_ufs_hce_enable_notify(struct ufs_hba *hba,
 
 	switch (status) {
 	case PRE_CHANGE:
+		if (ufs->drv_data->pre_hce_enable) {
+			ret = ufs->drv_data->pre_hce_enable(ufs);
+			if (ret)
+				return ret;
+		}
+
 		ret = exynos_ufs_host_reset(hba);
 		if (ret)
 			return ret;
@@ -1150,6 +1156,10 @@ static int exynos_ufs_hce_enable_notify(struct ufs_hba *hba,
 		exynos_ufs_calc_pwm_clk_div(ufs);
 		if (!(ufs->opts & EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL))
 			exynos_ufs_enable_auto_ctrl_hcc(ufs);
+
+		if (ufs->drv_data->post_hce_enable)
+			ret = ufs->drv_data->post_hce_enable(ufs);
+
 		break;
 	}
 
diff --git a/drivers/scsi/ufs/ufs-exynos.h b/drivers/scsi/ufs/ufs-exynos.h
index 8695270d38d9..9c44ca81020b 100644
--- a/drivers/scsi/ufs/ufs-exynos.h
+++ b/drivers/scsi/ufs/ufs-exynos.h
@@ -154,6 +154,8 @@ struct exynos_ufs_drv_data {
 				struct ufs_pa_layer_attr *pwr);
 	int (*post_pwr_change)(struct exynos_ufs *ufs,
 				struct ufs_pa_layer_attr *pwr);
+	int (*pre_hce_enable)(struct exynos_ufs *ufs);
+	int (*post_hce_enable)(struct exynos_ufs *ufs);
 };
 
 struct ufs_phy_time_cfg {
-- 
2.32.0