1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Ideapad helper functions for Lenovo Ideapad LED control,
4 * It should be included from codec driver.
5 */
6
7 #if IS_ENABLED(CONFIG_IDEAPAD_LAPTOP)
8
9 #include <linux/acpi.h>
10 #include <linux/leds.h>
11
is_ideapad(struct hda_codec * codec)12 static bool is_ideapad(struct hda_codec *codec)
13 {
14 return (codec->core.subsystem_id >> 16 == 0x17aa) &&
15 (acpi_dev_found("LHK2019") || acpi_dev_found("VPC2004"));
16 }
17
hda_fixup_ideapad_acpi(struct hda_codec * codec,const struct hda_fixup * fix,int action)18 static void hda_fixup_ideapad_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_ideapad(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_IDEAPAD_LAPTOP */
30
hda_fixup_ideapad_acpi(struct hda_codec * codec,const struct hda_fixup * fix,int action)31 static void hda_fixup_ideapad_acpi(struct hda_codec *codec,
32 const struct hda_fixup *fix, int action)
33 {
34 }
35
36 #endif /* CONFIG_IDEAPAD_LAPTOP */
37