Merge branch 'sunxi/drivers-for-3.16' of https://github.com/mripard/l…

…inux into next/drivers Merge "Allwinner drivers changes for 3.16" from Maxime Ripard: Reset drivers for the A31, that have been merged with reset maintainer's Acked-by. * 'sunxi/drivers-for-3.16' of https://github.com/mripard/linux: reset: sunxi: allow MFD subdevices probe reset: sunxi: document sunxi's reset controllers bindings Signed-off-by: Olof Johansson <[email protected]>
adn770 · May 21, 2014 · ed99885 · ed99885
2 parents 02be974 + cd90f0c
commit ed99885
Show file tree

Hide file tree

Showing 2 changed files with 39 additions and 3 deletions.
diff --git a/Documentation/devicetree/bindings/reset/allwinner,sunxi-clock-reset.txt b/Documentation/devicetree/bindings/reset/allwinner,sunxi-clock-reset.txt
@@ -0,0 +1,21 @@
+Allwinner sunxi Peripheral Reset Controller
+===========================================
+
+Please also refer to reset.txt in this directory for common reset
+controller binding usage.
+
+Required properties:
+- compatible: Should be one of the following:
+  "allwinner,sun6i-a31-ahb1-reset"
+  "allwinner,sun6i-a31-clock-reset"
+- reg: should be register base and length as documented in the
+  datasheet
+- #reset-cells: 1, see below
+
+example:
+
+ahb1_rst: reset@01c202c0 {
+	#reset-cells = <1>;
+	compatible = "allwinner,sun6i-a31-ahb1-reset";
+	reg = <0x01c202c0 0xc>;
+};
diff --git a/drivers/reset/reset-sunxi.c b/drivers/reset/reset-sunxi.c
@@ -145,16 +145,31 @@ MODULE_DEVICE_TABLE(of, sunxi_reset_dt_ids);
 
 static int sunxi_reset_probe(struct platform_device *pdev)
 {
-	return sunxi_reset_init(pdev->dev.of_node);
+	struct sunxi_reset_data *data;
+	struct resource *res;
+
+	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	data->membase = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(data->membase))
+		return PTR_ERR(data->membase);
+
+	data->rcdev.owner = THIS_MODULE;
+	data->rcdev.nr_resets = resource_size(res) * 32;
+	data->rcdev.ops = &sunxi_reset_ops;
+	data->rcdev.of_node = pdev->dev.of_node;
+
+	return reset_controller_register(&data->rcdev);
 }
 
 static int sunxi_reset_remove(struct platform_device *pdev)
 {
 	struct sunxi_reset_data *data = platform_get_drvdata(pdev);
 
 	reset_controller_unregister(&data->rcdev);
-	iounmap(data->membase);
-	kfree(data);
 
 	return 0;
 }