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ACPI: introduce acpi_arch_init()

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To avoid arch-specific code in general ACPI initialization flow,
introduce a weak symbol acpi_arch_init().

Currently, arm64 and riscv can utillize this to insert their
arch-specific flow.

In the future, other architectures can also have a chance to define
their own arch-specific ACPI initialization process if necessary.

Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Miao Wang <shankerwangmiao@gmail.com>
Link: https://patch.msgid.link/20241121-intro-acpi-arch-init-v4-1-b1fb517e7d8b@gmail.com
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Miao Wang 2024-11-21 22:25:21 +08:00 committed by Rafael J. Wysocki
parent 4e9ad033b4
commit 9d8a2b033d
4 changed files with 6 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/acpi/arm64/init.c
View File

@ -2,7 +2,7 @@
#include <linux/acpi.h>
#include "init.h"
void __init acpi_arm_init(void)
void __init acpi_arch_init(void)
{
if (IS_ENABLED(CONFIG_ACPI_AGDI))
acpi_agdi_init();

5
drivers/acpi/bus.c
View File

@ -1434,6 +1434,8 @@ static int __init acpi_bus_init(void)
struct kobject *acpi_kobj;
EXPORT_SYMBOL_GPL(acpi_kobj);
void __weak __init acpi_arch_init(void) { }
static int __init acpi_init(void)
{
int result;
@ -1461,8 +1463,7 @@ static int __init acpi_init(void)
acpi_viot_early_init();
acpi_hest_init();
acpi_ghes_init();
acpi_arm_init();
acpi_riscv_init();
acpi_arch_init();
acpi_scan_init();
acpi_ec_init();
acpi_debugfs_init();

2
drivers/acpi/riscv/init.c
View File

@ -7,7 +7,7 @@
#include <linux/acpi.h>
#include "init.h"
void __init acpi_riscv_init(void)
void __init acpi_arch_init(void)
{
riscv_acpi_init_gsi_mapping();
}

12
include/linux/acpi.h
View File

@ -1530,17 +1530,7 @@ static inline int find_acpi_cpu_topology_hetero_id(unsigned int cpu)
}
#endif
#ifdef CONFIG_ARM64
void acpi_arm_init(void);
#else
static inline void acpi_arm_init(void) { }
#endif
#ifdef CONFIG_RISCV
void acpi_riscv_init(void);
#else
static inline void acpi_riscv_init(void) { }
#endif
void acpi_arch_init(void);
#ifdef CONFIG_ACPI_PCC
void acpi_init_pcc(void);