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https://github.com/brain-hackers/u-boot-brain
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6d3b82df83
Introduce UCLASS_SOC to be used for SOC identification and attribute matching based on the SoC ID info. This allows drivers to be provided for SoCs to retrieve SoC identifying information and also for matching device attributes for selecting SoC specific data. This is useful for other device drivers that may need different parameters or quirks enabled depending on the specific device variant in use. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
103 lines
1.8 KiB
C
103 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2020 - Texas Instruments Incorporated - http://www.ti.com/
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* Dave Gerlach <d-gerlach@ti.com>
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*/
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#include <common.h>
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#include <soc.h>
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#include <dm.h>
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#include <errno.h>
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#include <dm/lists.h>
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#include <dm/root.h>
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int soc_get(struct udevice **devp)
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{
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return uclass_first_device_err(UCLASS_SOC, devp);
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}
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int soc_get_machine(struct udevice *dev, char *buf, int size)
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{
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struct soc_ops *ops = soc_get_ops(dev);
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if (!ops->get_machine)
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return -ENOSYS;
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return ops->get_machine(dev, buf, size);
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}
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int soc_get_family(struct udevice *dev, char *buf, int size)
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{
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struct soc_ops *ops = soc_get_ops(dev);
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if (!ops->get_family)
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return -ENOSYS;
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return ops->get_family(dev, buf, size);
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}
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int soc_get_revision(struct udevice *dev, char *buf, int size)
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{
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struct soc_ops *ops = soc_get_ops(dev);
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if (!ops->get_revision)
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return -ENOSYS;
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return ops->get_revision(dev, buf, size);
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}
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const struct soc_attr *
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soc_device_match(const struct soc_attr *matches)
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{
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bool match;
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struct udevice *soc;
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char str[SOC_MAX_STR_SIZE];
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if (!matches)
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return NULL;
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if (soc_get(&soc))
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return NULL;
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while (1) {
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if (!(matches->machine || matches->family ||
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matches->revision))
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break;
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match = true;
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if (matches->machine) {
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if (!soc_get_machine(soc, str, SOC_MAX_STR_SIZE)) {
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if (strcmp(matches->machine, str))
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match = false;
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}
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}
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if (matches->family) {
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if (!soc_get_family(soc, str, SOC_MAX_STR_SIZE)) {
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if (strcmp(matches->family, str))
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match = false;
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}
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}
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if (matches->revision) {
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if (!soc_get_revision(soc, str, SOC_MAX_STR_SIZE)) {
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if (strcmp(matches->revision, str))
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match = false;
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}
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}
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if (match)
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return matches;
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matches++;
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}
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return NULL;
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}
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UCLASS_DRIVER(soc) = {
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.id = UCLASS_SOC,
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.name = "soc",
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};
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