162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0
262306a36Sopenharmony_ci/* Helper functions for Thinkpad LED control;
362306a36Sopenharmony_ci * to be included from codec driver
462306a36Sopenharmony_ci */
562306a36Sopenharmony_ci
662306a36Sopenharmony_ci#if IS_ENABLED(CONFIG_THINKPAD_ACPI)
762306a36Sopenharmony_ci
862306a36Sopenharmony_ci#include <linux/acpi.h>
962306a36Sopenharmony_ci#include <linux/leds.h>
1062306a36Sopenharmony_ci
1162306a36Sopenharmony_cistatic bool is_thinkpad(struct hda_codec *codec)
1262306a36Sopenharmony_ci{
1362306a36Sopenharmony_ci	return (codec->core.subsystem_id >> 16 == 0x17aa) &&
1462306a36Sopenharmony_ci	       (acpi_dev_found("LEN0068") || acpi_dev_found("LEN0268") ||
1562306a36Sopenharmony_ci		acpi_dev_found("IBM0068"));
1662306a36Sopenharmony_ci}
1762306a36Sopenharmony_ci
1862306a36Sopenharmony_cistatic void hda_fixup_thinkpad_acpi(struct hda_codec *codec,
1962306a36Sopenharmony_ci				    const struct hda_fixup *fix, int action)
2062306a36Sopenharmony_ci{
2162306a36Sopenharmony_ci	if (action == HDA_FIXUP_ACT_PRE_PROBE) {
2262306a36Sopenharmony_ci		if (!is_thinkpad(codec))
2362306a36Sopenharmony_ci			return;
2462306a36Sopenharmony_ci		snd_hda_gen_add_mute_led_cdev(codec, NULL);
2562306a36Sopenharmony_ci		snd_hda_gen_add_micmute_led_cdev(codec, NULL);
2662306a36Sopenharmony_ci	}
2762306a36Sopenharmony_ci}
2862306a36Sopenharmony_ci
2962306a36Sopenharmony_ci#else /* CONFIG_THINKPAD_ACPI */
3062306a36Sopenharmony_ci
3162306a36Sopenharmony_cistatic void hda_fixup_thinkpad_acpi(struct hda_codec *codec,
3262306a36Sopenharmony_ci				    const struct hda_fixup *fix, int action)
3362306a36Sopenharmony_ci{
3462306a36Sopenharmony_ci}
3562306a36Sopenharmony_ci
3662306a36Sopenharmony_ci#endif /* CONFIG_THINKPAD_ACPI */
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