[PATCH v4 08/16] scsi: ufs: ufs-exynos: support custom version of ufs_hba_variant_ops

[Chanho Park <chanho61.park@samsung.com>]

By default, ufs_hba_exynos_ops will be used but this patch supports to
use custom version of ufs_hba_variant_ops because some variants of
exynos-ufs will use only few callbacks.

Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Kiwoong Kim <kwmad.kim@samsung.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
---
 drivers/scsi/ufs/ufs-exynos.c | 8 +++++++-
 drivers/scsi/ufs/ufs-exynos.h | 1 +
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/ufs/ufs-exynos.c b/drivers/scsi/ufs/ufs-exynos.c
index 41797f499544..8df792071a0a 100644
--- a/drivers/scsi/ufs/ufs-exynos.c
+++ b/drivers/scsi/ufs/ufs-exynos.c
@@ -1233,8 +1233,14 @@ static int exynos_ufs_probe(struct platform_device *pdev)
 {
 	int err;
 	struct device *dev = &pdev->dev;
+	const struct ufs_hba_variant_ops *vops = &ufs_hba_exynos_ops;
+	const struct exynos_ufs_drv_data *drv_data =
+		device_get_match_data(dev);
 
-	err = ufshcd_pltfrm_init(pdev, &ufs_hba_exynos_ops);
+	if (drv_data && drv_data->vops)
+		vops = drv_data->vops;
+
+	err = ufshcd_pltfrm_init(pdev, vops);
 	if (err)
 		dev_err(dev, "ufshcd_pltfrm_init() failed %d\n", err);
 
diff --git a/drivers/scsi/ufs/ufs-exynos.h b/drivers/scsi/ufs/ufs-exynos.h
index 2e72aabaa673..74f556d8a003 100644
--- a/drivers/scsi/ufs/ufs-exynos.h
+++ b/drivers/scsi/ufs/ufs-exynos.h
@@ -142,6 +142,7 @@ struct exynos_ufs_uic_attr {
 };
 
 struct exynos_ufs_drv_data {
+	const struct ufs_hba_variant_ops *vops;
 	struct exynos_ufs_uic_attr *uic_attr;
 	unsigned int quirks;
 	unsigned int opts;
-- 
2.33.0