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 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 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 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