linux/sound/pci/hda/thinkpad_helper.c

// SPDX-License-Identifier: GPL-2.0
/* Helper functions for Thinkpad LED control;
 * to be included from codec driver
 */

#if IS_ENABLED(CONFIG_THINKPAD_ACPI)

#include <linux/acpi.h>
#include <linux/leds.h>

static bool is_thinkpad(struct hda_codec *codec)
{ … }

static void hda_fixup_thinkpad_acpi(struct hda_codec *codec,
				    const struct hda_fixup *fix, int action)
{ … }

#else /* CONFIG_THINKPAD_ACPI */

static void hda_fixup_thinkpad_acpi(struct hda_codec *codec,
				    const struct hda_fixup *fix, int action)
{
}

#endif /* CONFIG_THINKPAD_ACPI */