37 lines
891 B
C
37 lines
891 B
C
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// SPDX-License-Identifier: GPL-2.0
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/* Helper functions for Thinkpad LED control;
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* to be included from codec driver
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*/
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#if IS_ENABLED(CONFIG_THINKPAD_ACPI)
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#include <linux/acpi.h>
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#include <linux/leds.h>
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static bool is_thinkpad(struct hda_codec *codec)
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{
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return (codec->core.subsystem_id >> 16 == 0x17aa) &&
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(acpi_dev_found("LEN0068") || acpi_dev_found("LEN0268") ||
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acpi_dev_found("IBM0068"));
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}
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static void hda_fixup_thinkpad_acpi(struct hda_codec *codec,
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const struct hda_fixup *fix, int action)
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{
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if (action == HDA_FIXUP_ACT_PRE_PROBE) {
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if (!is_thinkpad(codec))
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return;
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snd_hda_gen_add_mute_led_cdev(codec, NULL);
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snd_hda_gen_add_micmute_led_cdev(codec, NULL);
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}
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}
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#else /* CONFIG_THINKPAD_ACPI */
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static void hda_fixup_thinkpad_acpi(struct hda_codec *codec,
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const struct hda_fixup *fix, int action)
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{
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}
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#endif /* CONFIG_THINKPAD_ACPI */
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