Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0
//
// soc-apci.c - support for ACPI enumeration.
//
// Copyright (c) 2013-15, Intel Corporation.
 
#include <linux/export.h>
#include <linux/module.h>
#include <sound/soc-acpi.h>
 
struct snd_soc_acpi_mach *
snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines)
{
<------>struct snd_soc_acpi_mach *mach;
<------>struct snd_soc_acpi_mach *mach_alt;
 
<------>for (mach = machines; mach->id[0]; mach++) {
<------><------>if (acpi_dev_present(mach->id, NULL, -1)) {
<------><------><------>if (mach->machine_quirk) {
<------><------><------><------>mach_alt = mach->machine_quirk(mach);
<------><------><------><------>if (!mach_alt)
<------><------><------><------><------>continue; /* not full match, ignore */
<------><------><------><------>mach = mach_alt;
<------><------><------>}
 
<------><------><------>return mach;
<------><------>}
<------>}
<------>return NULL;
}
EXPORT_SYMBOL_GPL(snd_soc_acpi_find_machine);
 
static acpi_status snd_soc_acpi_find_package(acpi_handle handle, u32 level,
<------><------><------><------><------>     void *context, void **ret)
{
<------>struct acpi_device *adev;
<------>acpi_status status = AE_OK;
<------>struct snd_soc_acpi_package_context *pkg_ctx = context;
 
<------>pkg_ctx->data_valid = false;
 
<------>if (acpi_bus_get_device(handle, &adev))
<------><------>return AE_OK;
 
<------>if (adev->status.present && adev->status.functional) {
<------><------>struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
<------><------>union acpi_object  *myobj = NULL;
 
<------><------>status = acpi_evaluate_object_typed(handle, pkg_ctx->name,
<------><------><------><------><------><------>NULL, &buffer,
<------><------><------><------><------><------>ACPI_TYPE_PACKAGE);
<------><------>if (ACPI_FAILURE(status))
<------><------><------>return AE_OK;
 
<------><------>myobj = buffer.pointer;
<------><------>if (!myobj || myobj->package.count != pkg_ctx->length) {
<------><------><------>kfree(buffer.pointer);
<------><------><------>return AE_OK;
<------><------>}
 
<------><------>status = acpi_extract_package(myobj,
<------><------><------><------><------>pkg_ctx->format, pkg_ctx->state);
<------><------>if (ACPI_FAILURE(status)) {
<------><------><------>kfree(buffer.pointer);
<------><------><------>return AE_OK;
<------><------>}
 
<------><------>kfree(buffer.pointer);
<------><------>pkg_ctx->data_valid = true;
<------><------>return AE_CTRL_TERMINATE;
<------>}
 
<------>return AE_OK;
}
 
bool snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN],
<------><------><------><------>struct snd_soc_acpi_package_context *ctx)
{
<------>acpi_status status;
 
<------>status = acpi_get_devices(hid, snd_soc_acpi_find_package, ctx, NULL);
 
<------>if (ACPI_FAILURE(status) || !ctx->data_valid)
<------><------>return false;
 
<------>return true;
}
EXPORT_SYMBOL_GPL(snd_soc_acpi_find_package_from_hid);
 
struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg)
{
<------>struct snd_soc_acpi_mach *mach = arg;
<------>struct snd_soc_acpi_codecs *codec_list =
<------><------>(struct snd_soc_acpi_codecs *) mach->quirk_data;
<------>int i;
 
<------>if (mach->quirk_data == NULL)
<------><------>return mach;
 
<------>for (i = 0; i < codec_list->num_codecs; i++) {
<------><------>if (!acpi_dev_present(codec_list->codecs[i], NULL, -1))
<------><------><------>return NULL;
<------>}
 
<------>return mach;
}
EXPORT_SYMBOL_GPL(snd_soc_acpi_codec_list);
 
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("ALSA SoC ACPI module");