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More complex device properties can be provided to drivers via a device-specific data (_DSD) object. To create this we need to build it up in a separate data structure and then generate the ACPI code, due to its recursive nature. Add an implementation of this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
29 lines
705 B
C
29 lines
705 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Common functions for ACPI tests
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*
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* Copyright 2020 Google LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#ifndef __TEST_DM_ACPI_H
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#define __TEST_DM_ACPI_H
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/**
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* acpi_test_alloc_context_size() - Allocate an ACPI context of a given size
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*
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* @ctxp: Returns allocated context
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* @size: Size to allocate in bytes
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* @return 0 if OK, -ENOMEM if out of memory
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*/
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int acpi_test_alloc_context_size(struct acpi_ctx **ctxp, int size);
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/**
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* acpi_test_get_length() - decode a three-byte length field
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*
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* @ptr: Length encoded as per ACPI
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* @return decoded length, or -EINVAL on error
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*/
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int acpi_test_get_length(u8 *ptr);
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#endif /*__TEST_DM_ACPI_H */
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