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lib: utils/reset: Use fdt_driver for initialization

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The reset driver subsystem does not need any extra data, so it can use
`struct fdt_driver` directly. The generic fdt_reset_init() performs a
best-effort initialization of all matching DT nodes. Platform-specific
logic expects exactly one DT node to match a single driver. This is
accomplished by using fdt_driver_init_one() with a local list containing
that one driver.

Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Samuel Holland
2024-11-11 14:02:53 -08:00
committed by Anup Patel
parent 1f8db2f18f
commit 6d9ad492db
11 changed files with 26 additions and 61 deletions
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36
lib/utils/reset/fdt_reset.c
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@@ -7,44 +7,12 @@
* Anup Patel <anup.patel@wdc.com>
*/
#include <sbi/sbi_console.h>
#include <sbi/sbi_error.h>
#include <sbi/sbi_scratch.h>
#include <sbi_utils/fdt/fdt_helper.h>
#include <sbi_utils/reset/fdt_reset.h>
/* List of FDT reset drivers generated at compile time */
extern struct fdt_reset *const fdt_reset_drivers[];
int fdt_reset_driver_init(const void *fdt, struct fdt_reset *drv)
{
int noff, rc, cnt = 0;
const struct fdt_match *match;
noff = -1;
while ((noff = fdt_find_match(fdt, noff,
drv->match_table, &match)) >= 0) {
if (!fdt_node_is_enabled(fdt, noff))
continue;
if (drv->init) {
rc = drv->init(fdt, noff, match);
if (!rc)
cnt++;
else if (rc != SBI_ENODEV) {
sbi_printf("%s: %s init failed, %d\n",
__func__, match->compatible, rc);
}
}
}
return cnt > 0 ? 0 : SBI_ENODEV;
}
extern const struct fdt_driver *const fdt_reset_drivers[];
void fdt_reset_init(const void *fdt)
{
int pos;
for (pos = 0; fdt_reset_drivers[pos]; pos++)
fdt_reset_driver_init(fdt, fdt_reset_drivers[pos]);
fdt_driver_init_all(fdt, fdt_reset_drivers);
}