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fdt_support: Add fdt_for_each_node_by_compatible() helper macro

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Add macro fdt_for_each_node_by_compatible() to allow iterating over
fdt nodes by compatible string.

Convert various usages of
    off = fdt_node_offset_by_compatible(fdt, start, compat);
    while (off > 0) {
        code();
        off = fdt_node_offset_by_compatible(fdt, off, compat);
    }
and similar, to
    fdt_for_each_node_by_compatible(off, fdt, start, compat)
        code();

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Marek Behún
2022-01-20 01:04:42 +01:00
committed by Stefan Roese
parent 068415eade
commit 3058e283b8
16 changed files with 45 additions and 93 deletions
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22
common/fdt_support.c
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@@ -371,12 +371,9 @@ void do_fixup_by_compat(void *fdt, const char *compat,
debug(" %.2x", *(u8*)(val+i));
debug("\n");
#endif
off = fdt_node_offset_by_compatible(fdt, -1, compat);
while (off != -FDT_ERR_NOTFOUND) {
fdt_for_each_node_by_compatible(off, fdt, -1, compat)
if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL))
fdt_setprop(fdt, off, prop, val, len);
off = fdt_node_offset_by_compatible(fdt, off, compat);
}
}
void do_fixup_by_compat_u32(void *fdt, const char *compat,
@@ -996,10 +993,9 @@ void fdt_fixup_mtdparts(void *blob, const struct node_info *node_info,
for (i = 0; i < node_info_size; i++) {
idx = 0;
noff = -1;
while ((noff = fdt_node_offset_by_compatible(blob, noff,
node_info[i].compat)) >= 0) {
fdt_for_each_node_by_compatible(noff, blob, -1,
node_info[i].compat) {
const char *prop;
prop = fdt_getprop(blob, noff, "status", NULL);
@@ -1473,14 +1469,12 @@ out:
int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
phys_addr_t compat_off)
{
int len, off = fdt_node_offset_by_compatible(blob, -1, compat);
while (off != -FDT_ERR_NOTFOUND) {
int len, off;
fdt_for_each_node_by_compatible(off, blob, -1, compat) {
const fdt32_t *reg = fdt_getprop(blob, off, "reg", &len);
if (reg) {
if (compat_off == fdt_translate_address(blob, off, reg))
return off;
}
off = fdt_node_offset_by_compatible(blob, off, compat);
if (reg && compat_off == fdt_translate_address(blob, off, reg))
return off;
}
return -FDT_ERR_NOTFOUND;