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097e727b58
The inclusion of linux/arm-smccc.h in acpi_ffh is unnecessary and can be even termed wrong. It is needed in the arm64 architecture callback implementation and probably is the leftover from the missed cleanup of the initial implementation. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Author: Sudeep Holla <sudeep.holla@arm.com>
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* Copyright 2022 Arm Limited
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*/
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#include <linux/kernel.h>
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#include <linux/acpi.h>
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#include <linux/completion.h>
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#include <linux/idr.h>
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#include <linux/io.h>
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static struct acpi_ffh_info ffh_ctx;
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int __weak acpi_ffh_address_space_arch_setup(void *handler_ctxt,
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void **region_ctxt)
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{
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return -EOPNOTSUPP;
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}
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int __weak acpi_ffh_address_space_arch_handler(acpi_integer *value,
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void *region_context)
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{
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return -EOPNOTSUPP;
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}
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static acpi_status
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acpi_ffh_address_space_setup(acpi_handle region_handle, u32 function,
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void *handler_context, void **region_context)
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{
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return acpi_ffh_address_space_arch_setup(handler_context,
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region_context);
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}
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static acpi_status
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acpi_ffh_address_space_handler(u32 function, acpi_physical_address addr,
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u32 bits, acpi_integer *value,
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void *handler_context, void *region_context)
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{
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return acpi_ffh_address_space_arch_handler(value, region_context);
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}
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void __init acpi_init_ffh(void)
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{
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acpi_status status;
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status = acpi_install_address_space_handler(ACPI_ROOT_OBJECT,
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ACPI_ADR_SPACE_FIXED_HARDWARE,
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&acpi_ffh_address_space_handler,
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&acpi_ffh_address_space_setup,
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&ffh_ctx);
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if (ACPI_FAILURE(status))
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pr_alert("OperationRegion handler could not be installed\n");
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}
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