soc: microchip: mpfs-sys-controller: add support for pic64gx

pic64gx is not compatible with mpfs because due to the lack of FPGA
functionality some features are disabled. Notably, anything to do with
FPGA fabric contents is not supported.

Signed-off-by: Pierre-Henry Moussay <[email protected]>
Signed-off-by: Conor Dooley <[email protected]>

Author: Pierre-Henry Moussay

drivers/soc/microchip/mpfs-sys-controller.c

@@ -36,6 +36,11 @@ struct mpfs_sys_controller {
 	struct kref consumers;
 };
 
+struct mpfs_syscon_config {
+	unsigned int nb_subdevs;
+	struct platform_device *subdevs;
+};
+
 int mpfs_blocking_transaction(struct mpfs_sys_controller *sys_controller, struct mpfs_mss_msg *msg)
 {
 	unsigned long timeout = msecs_to_jiffies(MPFS_SYS_CTRL_TIMEOUT_MS);
@@ -110,25 +115,11 @@ struct mtd_info *mpfs_sys_controller_get_flash(struct mpfs_sys_controller *mpfs_
 }
 EXPORT_SYMBOL(mpfs_sys_controller_get_flash);
 
-static struct platform_device subdevs[] = {
-	{
-		.name		= "mpfs-rng",
-		.id		= -1,
-	},
-	{
-		.name		= "mpfs-generic-service",
-		.id		= -1,
-	},
-	{
-		.name		= "mpfs-auto-update",
-		.id		= -1,
-	},
-};
-
 static int mpfs_sys_controller_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mpfs_sys_controller *sys_controller;
+	struct mpfs_syscon_config *of_data;
 	struct device_node *np;
 	int i, ret;
 
@@ -164,11 +155,17 @@ static int mpfs_sys_controller_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, sys_controller);
 
+	of_data = (struct mpfs_syscon_config *) device_get_match_data(dev);
+	if (!of_data) {
+		dev_err(dev, "Error getting match data\n");
+		return -EINVAL;
+	}
 
-	for (i = 0; i < ARRAY_SIZE(subdevs); i++) {
-		subdevs[i].dev.parent = dev;
-		if (platform_device_register(&subdevs[i]))
-			dev_warn(dev, "Error registering sub device %s\n", subdevs[i].name);
+	for (i = 0; i < of_data->nb_subdevs; i++) {
+		of_data->subdevs[i].dev.parent = dev;
+		if (platform_device_register(&of_data->subdevs[i]))
+			dev_warn(dev, "Error registering sub device %s\n",
+				 of_data->subdevs[i].name);
 	}
 
 	dev_info(&pdev->dev, "Registered MPFS system controller\n");
@@ -183,8 +180,45 @@ static void mpfs_sys_controller_remove(struct platform_device *pdev)
 	mpfs_sys_controller_put(sys_controller);
 }
 
+static struct platform_device mpfs_subdevs[] = {
+	{
+		.name		= "mpfs-rng",
+		.id		= -1,
+	},
+	{
+		.name		= "mpfs-generic-service",
+		.id		= -1,
+	},
+	{
+		.name		= "mpfs-auto-update",
+		.id		= -1,
+	},
+};
+
+static struct platform_device pic64gx_subdevs[] = {
+	{
+		.name		= "mpfs-rng",
+		.id		= -1,
+	},
+	{
+		.name		= "mpfs-generic-service",
+		.id		= -1,
+	},
+};
+
+static const struct mpfs_syscon_config mpfs_config = {
+	.nb_subdevs = ARRAY_SIZE(mpfs_subdevs),
+	.subdevs = mpfs_subdevs,
+};
+
+static const struct mpfs_syscon_config pic64gx_config = {
+	.nb_subdevs = ARRAY_SIZE(pic64gx_subdevs),
+	.subdevs = pic64gx_subdevs,
+};
+
 static const struct of_device_id mpfs_sys_controller_of_match[] = {
-	{.compatible = "microchip,mpfs-sys-controller", },
+	{.compatible = "microchip,mpfs-sys-controller", .data = &mpfs_config},
+	{.compatible = "microchip,pic64gx-sys-controller", .data = &pic64gx_config},
 	{},
 };
 MODULE_DEVICE_TABLE(of, mpfs_sys_controller_of_match);