| // 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) |
| { |
| return (codec->core.subsystem_id >> 16 == 0x17aa) && |
| (acpi_dev_found("LEN0068") || acpi_dev_found("LEN0268") || |
| acpi_dev_found("IBM0068")); |
| } |
| |
| static void hda_fixup_thinkpad_acpi(struct hda_codec *codec, |
| const struct hda_fixup *fix, int action) |
| { |
| if (action == HDA_FIXUP_ACT_PRE_PROBE) { |
| if (!is_thinkpad(codec)) |
| return; |
| snd_hda_gen_add_mute_led_cdev(codec, NULL); |
| snd_hda_gen_add_micmute_led_cdev(codec, NULL); |
| } |
| } |
| |
| #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 */ |
