bus: ti-sysc: Remove open coded "ranges" parsing

"ranges" is a standard property and we have common helper functions for
parsing it, so let's use them.

Signed-off-by: Rob Herring <robh@kernel.org>
Message-Id: <20230201220002.246907-1-robh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index 6afae98978434e2343e82e97679993bb398899a2..9c898551537645875da934b844382979a556147e 100644 (file)
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -648,43 +648,20 @@ static int sysc_init_resets(struct sysc *ddata)
 static int sysc_parse_and_check_child_range(struct sysc *ddata)
 {
        struct device_node *np = ddata->dev->of_node;
-       const __be32 *ranges;
-       u32 nr_addr, nr_size;
-       int len, error;
-
-       ranges = of_get_property(np, "ranges", &len);
-       if (!ranges) {
-               dev_err(ddata->dev, "missing ranges for %pOF\n", np);
-
-               return -ENOENT;
-       }
-
-       len /= sizeof(*ranges);
-
-       if (len < 3) {
-               dev_err(ddata->dev, "incomplete ranges for %pOF\n", np);
-
-               return -EINVAL;
-       }
-
-       error = of_property_read_u32(np, "#address-cells", &nr_addr);
-       if (error)
-               return -ENOENT;
+       struct of_range_parser parser;
+       struct of_range range;
+       int error;
 
-       error = of_property_read_u32(np, "#size-cells", &nr_size);
+       error = of_range_parser_init(&parser, np);
        if (error)
-               return -ENOENT;
-
-       if (nr_addr != 1 || nr_size != 1) {
-               dev_err(ddata->dev, "invalid ranges for %pOF\n", np);
+               return error;
 
-               return -EINVAL;
+       for_each_of_range(&parser, &range) {
+               ddata->module_pa = range.cpu_addr;
+               ddata->module_size = range.size;
+               break;
        }
 
-       ranges++;
-       ddata->module_pa = of_translate_address(np, ranges++);
-       ddata->module_size = be32_to_cpup(ranges);
-
        return 0;
 }