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lib: utils/regmap: Use fdt_driver for initialization

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The regmap driver subsystem does not need any extra data, so it can use
`struct fdt_driver` directly. It always initializes the driver for a
specific DT node.

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 14:02:52 -08:00
committed by Anup Patel
parent 5fa510c5f6
commit 1f8db2f18f
4 changed files with 6 additions and 34 deletions
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28
lib/utils/regmap/fdt_regmap.c
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@@ -13,30 +13,7 @@
#include <sbi_utils/regmap/fdt_regmap.h>
/* List of FDT regmap drivers generated at compile time */
extern struct fdt_regmap *const fdt_regmap_drivers[];
static int fdt_regmap_init(const void *fdt, int nodeoff)
{
int pos, rc;
struct fdt_regmap *drv;
const struct fdt_match *match;
/* Try all I2C drivers one-by-one */
for (pos = 0; fdt_regmap_drivers[pos]; pos++) {
drv = fdt_regmap_drivers[pos];
match = fdt_match_node(fdt, nodeoff, drv->match_table);
if (match && drv->init) {
rc = drv->init(fdt, nodeoff, match);
if (rc == SBI_ENODEV)
continue;
if (rc)
return rc;
return 0;
}
}
return SBI_ENOSYS;
}
extern const struct fdt_driver *const fdt_regmap_drivers[];
static int fdt_regmap_find(const void *fdt, int nodeoff,
struct regmap **out_rmap)
@@ -46,7 +23,8 @@ static int fdt_regmap_find(const void *fdt, int nodeoff,
if (!rmap) {
/* Regmap not found so initialize matching driver */
rc = fdt_regmap_init(fdt, nodeoff);
rc = fdt_driver_init_by_offset(fdt, nodeoff,
fdt_regmap_drivers);
if (rc)
return rc;