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bus: uniphier-system-bus: Remove open coded "ranges" parsing 

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

Tested-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/20230206194503.1162108-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Rob Herring 2023-02-06 13:45:04 -06:00
parent fe15c26ee2
commit c12cc1bc7d
1 changed files with 11 additions and 43 deletions
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54
drivers/bus/uniphier-system-bus.c
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@ -176,10 +176,9 @@ static int uniphier_system_bus_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct uniphier_system_bus_priv *priv;
const __be32 *ranges;
u32 cells, addr, size;
u64 paddr;
int pna, bank, rlen, rone, ret;
struct of_range_parser parser;
struct of_range range;
int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
@ -191,48 +190,17 @@ static int uniphier_system_bus_probe(struct platform_device *pdev)
priv->dev = dev;
pna = of_n_addr_cells(dev->of_node);
ret = of_property_read_u32(dev->of_node, "#address-cells", &cells);
if (ret) {
dev_err(dev, "failed to get #address-cells\n");
ret = of_range_parser_init(&parser, dev->of_node);
if (ret)
return ret;
}
if (cells != 2) {
dev_err(dev, "#address-cells must be 2\n");
return -EINVAL;
}
ret = of_property_read_u32(dev->of_node, "#size-cells", &cells);
if (ret) {
dev_err(dev, "failed to get #size-cells\n");
return ret;
}
if (cells != 1) {
dev_err(dev, "#size-cells must be 1\n");
return -EINVAL;
}
ranges = of_get_property(dev->of_node, "ranges", &rlen);
if (!ranges) {
dev_err(dev, "failed to get ranges property\n");
return -ENOENT;
}
rlen /= sizeof(*ranges);
rone = pna + 2;
for (; rlen >= rone; rlen -= rone) {
bank = be32_to_cpup(ranges++);
addr = be32_to_cpup(ranges++);
paddr = of_translate_address(dev->of_node, ranges);
if (paddr == OF_BAD_ADDR)
for_each_of_range(&parser, &range) {
if (range.cpu_addr == OF_BAD_ADDR)
return -EINVAL;
ranges += pna;
size = be32_to_cpup(ranges++);
ret = uniphier_system_bus_add_bank(priv, bank, addr,
paddr, size);
ret = uniphier_system_bus_add_bank(priv,
upper_32_bits(range.bus_addr),
lower_32_bits(range.bus_addr),
range.cpu_addr, range.size);
if (ret)
return ret;
}