media: imx-pxp: make data_path_ctrl0 platform dependent

Unfortunately, the PXP_HW_VERSION register reports the PXP on the i.MX7D
and on the i.MX6ULL as version 3.0, although the PXP versions on these
SoCs have significant differences.

Use the compatible to configure the ctrl0 register as required dependent
on the platform.
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/nxp/imx-pxp.c

@@ -19,6 +19,7 @@
 #include <linux/iopoll.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
 
@@ -191,6 +192,12 @@ static struct pxp_fmt *find_format(struct v4l2_format *f)
 	return &formats[k];
 }
 
+struct pxp_ctx;
+
+struct pxp_pdata {
+	u32 (*data_path_ctrl0)(struct pxp_ctx *ctx);
+};
+
 struct pxp_dev {
 	struct v4l2_device	v4l2_dev;
 	struct video_device	vfd;
@@ -198,6 +205,8 @@ struct pxp_dev {
 	struct clk		*clk;
 	void __iomem		*mmio;
 
+	const struct pxp_pdata	*pdata;
+
 	atomic_t		num_inst;
 	struct mutex		dev_mutex;
 	spinlock_t		irqlock;
@@ -724,7 +733,7 @@ static void pxp_setup_csc(struct pxp_ctx *ctx)
 	}
 }
 
-static u32 pxp_data_path_ctrl0(struct pxp_ctx *ctx)
+static u32 pxp_imx6ull_data_path_ctrl0(struct pxp_ctx *ctx)
 {
 	u32 ctrl0;
 
@@ -760,7 +769,7 @@ static void pxp_set_data_path(struct pxp_ctx *ctx)
 	u32 ctrl0;
 	u32 ctrl1;
 
-	ctrl0 = pxp_data_path_ctrl0(ctx);
+	ctrl0 = dev->pdata->data_path_ctrl0(ctx);
 
 	ctrl1 = 0;
 	ctrl1 |= BF_PXP_DATA_PATH_CTRL1_MUX17_SEL(3);
@@ -1705,6 +1714,8 @@ static int pxp_probe(struct platform_device *pdev)
 	if (!dev)
 		return -ENOMEM;
 
+	dev->pdata = of_device_get_match_data(&pdev->dev);
+
 	dev->clk = devm_clk_get(&pdev->dev, "axi");
 	if (IS_ERR(dev->clk)) {
 		ret = PTR_ERR(dev->clk);
@@ -1804,8 +1815,12 @@ static int pxp_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct pxp_pdata pxp_imx6ull_pdata = {
+	.data_path_ctrl0 = pxp_imx6ull_data_path_ctrl0,
+};
+
 static const struct of_device_id pxp_dt_ids[] = {
-	{ .compatible = "fsl,imx6ull-pxp", .data = NULL },
+	{ .compatible = "fsl,imx6ull-pxp", .data = &pxp_imx6ull_pdata },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, pxp_dt_ids);