media: i2c: ov8856: Use the v4l2 helper for obtaining the clock

devm_clk_get() fails on ACPI-based platforms, where firmware does not
provide a direct reference to the clock producer.

Replace devm_clk_get() with the new v4l2 helper
devm_v4l2_sensor_clk_get() that works on both DT- and ACPI-based
platforms to retrieve a reference to the clock producer from firmware.

Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mehdi Djait <mehdi.djait@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

diff --git a/drivers/media/i2c/ov8856.c b/drivers/media/i2c/ov8856.c
index 4b6874d2a104ad4858349e6dee67f5e34318c18b..b85051f053ffea68f5062445a33f5d152c5ddfc7 100644 (file)
--- a/drivers/media/i2c/ov8856.c
+++ b/drivers/media/i2c/ov8856.c
@@ -2274,12 +2274,10 @@ static int ov8856_get_hwcfg(struct ov8856 *ov8856, struct device *dev)
                return ret;
 
        if (!is_acpi_node(fwnode)) {
-               ov8856->xvclk = devm_clk_get(dev, "xvclk");
-               if (IS_ERR(ov8856->xvclk)) {
-                       dev_err_probe(dev, PTR_ERR(ov8856->xvclk),
-                                     "could not get xvclk clock\n");
-                       return PTR_ERR(ov8856->xvclk);
-               }
+               ov8856->xvclk = devm_v4l2_sensor_clk_get(dev, "xvclk");
+               if (IS_ERR(ov8856->xvclk))
+                       return dev_err_probe(dev, PTR_ERR(ov8856->xvclk),
+                                            "could not get xvclk clock\n");
 
                clk_set_rate(ov8856->xvclk, xvclk_rate);
                xvclk_rate = clk_get_rate(ov8856->xvclk);