forked from Mirrors/opensbi
333133edaa
The i2c 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>
56 lines
1.1 KiB
C
56 lines
1.1 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2022 starfivetech.com
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*
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* Authors:
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* Minda Chen <minda.chen@starfivetech.com>
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*/
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#include <sbi/riscv_io.h>
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#include <sbi/sbi_error.h>
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#include <sbi/sbi_heap.h>
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#include <sbi/sbi_string.h>
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#include <sbi_utils/fdt/fdt_helper.h>
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#include <sbi_utils/i2c/dw_i2c.h>
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#include <sbi_utils/i2c/fdt_i2c.h>
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static int fdt_dw_i2c_init(const void *fdt, int nodeoff,
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const struct fdt_match *match)
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{
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int rc;
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struct dw_i2c_adapter *adapter;
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u64 addr;
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adapter = sbi_zalloc(sizeof(*adapter));
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if (!adapter)
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return SBI_ENOMEM;
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rc = fdt_get_node_addr_size(fdt, nodeoff, 0, &addr, NULL);
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if (rc) {
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sbi_free(adapter);
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return rc;
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}
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adapter->addr = addr;
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rc = dw_i2c_init(&adapter->adapter, nodeoff);
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if (rc) {
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sbi_free(adapter);
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return rc;
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}
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return 0;
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}
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static const struct fdt_match fdt_dw_i2c_match[] = {
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{ .compatible = "snps,designware-i2c" },
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{ .compatible = "starfive,jh7110-i2c" },
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{ },
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};
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const struct fdt_driver fdt_i2c_adapter_dw = {
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.match_table = fdt_dw_i2c_match,
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.init = fdt_dw_i2c_init,
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};
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