[PATCH v6 2/5] i2c: designware: Add quirk for Intel Xe

[Heikki Krogerus <heikki.krogerus@linux.intel.com>]

The regmap is coming from the parent also in case of Xe
GPUs. Reusing the Wangxun quirk for that.

Originally-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
---
 drivers/i2c/busses/i2c-designware-platdrv.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 3104f52e32be..a35e4c64a1d4 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -101,7 +101,7 @@ static int bt1_i2c_request_regs(struct dw_i2c_dev *dev)
 }
 #endif
 
-static int txgbe_i2c_request_regs(struct dw_i2c_dev *dev)
+static int dw_i2c_get_parent_regmap(struct dw_i2c_dev *dev)
 {
 	dev->map = dev_get_regmap(dev->dev->parent, NULL);
 	if (!dev->map)
@@ -123,12 +123,15 @@ static int dw_i2c_plat_request_regs(struct dw_i2c_dev *dev)
 	struct platform_device *pdev = to_platform_device(dev->dev);
 	int ret;
 
+	if (device_is_compatible(dev->dev, "intel,xe-i2c"))
+		return dw_i2c_get_parent_regmap(dev);
+
 	switch (dev->flags & MODEL_MASK) {
 	case MODEL_BAIKAL_BT1:
 		ret = bt1_i2c_request_regs(dev);
 		break;
 	case MODEL_WANGXUN_SP:
-		ret = txgbe_i2c_request_regs(dev);
+		ret = dw_i2c_get_parent_regmap(dev);
 		break;
 	default:
 		dev->base = devm_platform_ioremap_resource(pdev, 0);
-- 
2.47.2