| 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 | |
| 11 | static bool is_thinkpad(struct hda_codec *codec) |
| 12 | { |
| 13 | return (codec->core.subsystem_id >> 16 == 0x17aa) && |
| 14 | (acpi_dev_found(hid: "LEN0068") || acpi_dev_found(hid: "LEN0268") || |
| 15 | acpi_dev_found(hid: "IBM0068")); |
| 16 | } |
| 17 | |
| 18 | static 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 | |
| 31 | static 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 */ |
| 37 |