49 lines
1.3 KiB
C
Executable file
49 lines
1.3 KiB
C
Executable file
// SPDX-License-Identifier: GPL-2.0
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/* Helper functions for Dell Mic Mute LED control;
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* to be included from codec driver
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*/
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#if IS_ENABLED(CONFIG_DELL_LAPTOP)
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#include <linux/dell-led.h>
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static int (*dell_micmute_led_set_func)(int);
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static void dell_micmute_update(struct hda_codec *codec)
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{
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struct hda_gen_spec *spec = codec->spec;
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dell_micmute_led_set_func(spec->micmute_led.led_value);
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}
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static void alc_fixup_dell_wmi(struct hda_codec *codec,
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const struct hda_fixup *fix, int action)
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{
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bool removefunc = false;
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if (action == HDA_FIXUP_ACT_PROBE) {
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if (!dell_micmute_led_set_func)
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dell_micmute_led_set_func = symbol_request(dell_micmute_led_set);
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if (!dell_micmute_led_set_func) {
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codec_warn(codec, "Failed to find dell wmi symbol dell_micmute_led_set\n");
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return;
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}
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removefunc = (dell_micmute_led_set_func(false) < 0) ||
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(snd_hda_gen_add_micmute_led(codec,
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dell_micmute_update) < 0);
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}
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if (dell_micmute_led_set_func && (action == HDA_FIXUP_ACT_FREE || removefunc)) {
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symbol_put(dell_micmute_led_set);
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dell_micmute_led_set_func = NULL;
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}
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}
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#else /* CONFIG_DELL_LAPTOP */
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static void alc_fixup_dell_wmi(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_DELL_LAPTOP */
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