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https://github.com/brain-hackers/u-boot-brain
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41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2017
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* Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
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*/
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#include <common.h>
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#include <dm.h>
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#include <log.h>
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#include <dm/lists.h>
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#include "gdsys_soc.h"
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/**
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* struct gdsys_soc_priv - Private data for gdsys soc bus
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* @fpga: The gdsys IHS FPGA this bus is associated with
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*/
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struct gdsys_soc_priv {
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struct udevice *fpga;
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};
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static const struct udevice_id gdsys_soc_ids[] = {
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{ .compatible = "gdsys,soc" },
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{ /* sentinel */ }
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};
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int gdsys_soc_get_fpga(struct udevice *child, struct udevice **fpga)
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{
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struct gdsys_soc_priv *bus_priv;
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if (!child->parent) {
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debug("%s: Invalid parent\n", child->name);
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return -EINVAL;
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}
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if (!device_is_compatible(child->parent, "gdsys,soc")) {
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debug("%s: Not child of a gdsys soc\n", child->name);
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return -EINVAL;
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}
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bus_priv = dev_get_priv(child->parent);
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*fpga = bus_priv->fpga;
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return 0;
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}
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static int gdsys_soc_probe(struct udevice *dev)
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{
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struct gdsys_soc_priv *priv = dev_get_priv(dev);
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struct udevice *fpga;
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int res = uclass_get_device_by_phandle(UCLASS_MISC, dev, "fpga",
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&fpga);
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if (res == -ENOENT) {
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debug("%s: Could not find 'fpga' phandle\n", dev->name);
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return -EINVAL;
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}
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if (res == -ENODEV) {
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debug("%s: Could not get FPGA device\n", dev->name);
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return -EINVAL;
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}
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priv->fpga = fpga;
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return 0;
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}
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U_BOOT_DRIVER(gdsys_soc_bus) = {
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.name = "gdsys_soc_bus",
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.id = UCLASS_SIMPLE_BUS,
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.of_match = gdsys_soc_ids,
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.probe = gdsys_soc_probe,
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.priv_auto = sizeof(struct gdsys_soc_priv),
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};
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