1// SPDX-License-Identifier: GPL-2.0
 2/* Helper functions for Thinkpad LED control;
 3 * to be included from codec driver
 4 */
 5
 6#if IS_ENABLED(CONFIG_THINKPAD_ACPI)
 7
 8#include <linux/acpi.h>
 9#include <linux/leds.h>
10
11static bool is_thinkpad(struct hda_codec *codec)
12{
13	return (codec->core.subsystem_id >> 16 == 0x17aa) &&
14	       (acpi_dev_found("LEN0068") || acpi_dev_found("LEN0268") ||
15		acpi_dev_found("IBM0068"));
16}
17
18static void hda_fixup_thinkpad_acpi(struct hda_codec *codec,
19				    const struct hda_fixup *fix, int action)
20{
21	if (action == HDA_FIXUP_ACT_PRE_PROBE) {
22		if (!is_thinkpad(codec))
23			return;
24		snd_hda_gen_add_mute_led_cdev(codec, NULL);
25		snd_hda_gen_add_micmute_led_cdev(codec, NULL);
26	}
27}
28
29#else /* CONFIG_THINKPAD_ACPI */
30
31static void hda_fixup_thinkpad_acpi(struct hda_codec *codec,
32				    const struct hda_fixup *fix, int action)
33{
34}
35
36#endif /* CONFIG_THINKPAD_ACPI */