From 6bb1504d5fe10e4ccf0b5318525948c86d5aa915 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Thu, 16 Feb 2023 12:12:04 -0600 Subject: bus: mvebu-mbus: Remove open coded "ranges" parsing "ranges" is a standard property, and we have common helper functions for parsing it, so let's use them. Cc: Andrew Lunn Cc: Sebastian Hesselbarth Cc: Gregory Clement Link: https://lore.kernel.org/r/20230216181204.2895676-1-robh@kernel.org Signed-off-by: Rob Herring --- drivers/bus/mvebu-mbus.c | 58 +++++++----------------------------------------- 1 file changed, 8 insertions(+), 50 deletions(-) (limited to 'drivers') diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c index d51573ac525e..00cb792bda18 100644 --- a/drivers/bus/mvebu-mbus.c +++ b/drivers/bus/mvebu-mbus.c @@ -1179,74 +1179,32 @@ static int __init mbus_dt_setup_win(struct mvebu_mbus_state *mbus, return 0; } -static int __init -mbus_parse_ranges(struct device_node *node, - int *addr_cells, int *c_addr_cells, int *c_size_cells, - int *cell_count, const __be32 **ranges_start, - const __be32 **ranges_end) -{ - const __be32 *prop; - int ranges_len, tuple_len; - - /* Allow a node with no 'ranges' property */ - *ranges_start = of_get_property(node, "ranges", &ranges_len); - if (*ranges_start == NULL) { - *addr_cells = *c_addr_cells = *c_size_cells = *cell_count = 0; - *ranges_start = *ranges_end = NULL; - return 0; - } - *ranges_end = *ranges_start + ranges_len / sizeof(__be32); - - *addr_cells = of_n_addr_cells(node); - - prop = of_get_property(node, "#address-cells", NULL); - *c_addr_cells = be32_to_cpup(prop); - - prop = of_get_property(node, "#size-cells", NULL); - *c_size_cells = be32_to_cpup(prop); - - *cell_count = *addr_cells + *c_addr_cells + *c_size_cells; - tuple_len = (*cell_count) * sizeof(__be32); - - if (ranges_len % tuple_len) { - pr_warn("malformed ranges entry '%pOFn'\n", node); - return -EINVAL; - } - return 0; -} - static int __init mbus_dt_setup(struct mvebu_mbus_state *mbus, struct device_node *np) { - int addr_cells, c_addr_cells, c_size_cells; - int i, ret, cell_count; - const __be32 *r, *ranges_start, *ranges_end; + int ret; + struct of_range_parser parser; + struct of_range range; - ret = mbus_parse_ranges(np, &addr_cells, &c_addr_cells, - &c_size_cells, &cell_count, - &ranges_start, &ranges_end); + ret = of_range_parser_init(&parser, np); if (ret < 0) - return ret; + return 0; - for (i = 0, r = ranges_start; r < ranges_end; r += cell_count, i++) { - u32 windowid, base, size; + for_each_of_range(&parser, &range) { + u32 windowid = upper_32_bits(range.bus_addr); u8 target, attr; /* * An entry with a non-zero custom field do not * correspond to a static window, so skip it. */ - windowid = of_read_number(r, 1); if (CUSTOM(windowid)) continue; target = TARGET(windowid); attr = ATTR(windowid); - base = of_read_number(r + c_addr_cells, addr_cells); - size = of_read_number(r + c_addr_cells + addr_cells, - c_size_cells); - ret = mbus_dt_setup_win(mbus, base, size, target, attr); + ret = mbus_dt_setup_win(mbus, range.cpu_addr, range.size, target, attr); if (ret < 0) return ret; } -- cgit v1.2.3