88 lines
1.7 KiB
C
88 lines
1.7 KiB
C
/*
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* Copyright (c) 2021, STMicroelectronics - All Rights Reserved
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <errno.h>
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#include <common/debug.h>
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#include <common/fdt_wrappers.h>
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#include <drivers/st/regulator.h>
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#include <drivers/st/regulator_fixed.h>
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#include <libfdt.h>
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#ifndef PLAT_NB_FIXED_REGS
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#error "Missing PLAT_NB_FIXED_REGS"
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#endif
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#define FIXED_NAME_LEN 32
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struct fixed_data {
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char name[FIXED_NAME_LEN];
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uint16_t volt;
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struct regul_description desc;
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};
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static struct fixed_data data[PLAT_NB_FIXED_REGS];
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static int fixed_set_state(const struct regul_description *desc, bool state)
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{
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return 0;
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}
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static int fixed_get_state(const struct regul_description *desc)
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{
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return 1;
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}
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static struct regul_ops fixed_ops = {
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.set_state = fixed_set_state,
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.get_state = fixed_get_state,
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};
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int fixed_regulator_register(void)
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{
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uint32_t count = 0;
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void *fdt;
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int node;
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VERBOSE("fixed reg init!\n");
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if (fdt_get_address(&fdt) == 0) {
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return -FDT_ERR_NOTFOUND;
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}
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fdt_for_each_compatible_node(fdt, node, "regulator-fixed") {
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int len __unused;
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int ret;
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struct fixed_data *d = &data[count];
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const char *reg_name;
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reg_name = fdt_get_name(fdt, node, NULL);
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VERBOSE("register fixed reg %s!\n", reg_name);
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len = snprintf(d->name, FIXED_NAME_LEN - 1, "%s", reg_name);
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assert((len > 0) && (len < (FIXED_NAME_LEN - 1)));
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d->desc.node_name = d->name;
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d->desc.driver_data = d;
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d->desc.ops = &fixed_ops;
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ret = regulator_register(&d->desc, node);
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if (ret != 0) {
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WARN("%s:%d failed to register %s\n", __func__,
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__LINE__, reg_name);
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return ret;
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}
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count++;
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assert(count <= PLAT_NB_FIXED_REGS);
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}
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return 0;
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}
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