Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
00ef9940 HW |
2 | /* Helper functions for Dell Mic Mute LED control; |
3 | * to be included from codec driver | |
4 | */ | |
5 | ||
44319ab7 | 6 | #if IS_ENABLED(CONFIG_DELL_LAPTOP) |
00ef9940 HW |
7 | #include <linux/dell-led.h> |
8 | ||
62a93947 TI |
9 | enum { |
10 | MICMUTE_LED_ON, | |
11 | MICMUTE_LED_OFF, | |
12 | MICMUTE_LED_FOLLOW_CAPTURE, | |
13 | MICMUTE_LED_FOLLOW_MUTE, | |
14 | }; | |
15 | ||
16 | static int dell_led_mode = MICMUTE_LED_FOLLOW_MUTE; | |
17 | static int dell_capture; | |
00ef9940 | 18 | static int dell_led_value; |
5dba8804 | 19 | static int (*dell_micmute_led_set_func)(int); |
00ef9940 HW |
20 | static void (*dell_old_cap_hook)(struct hda_codec *, |
21 | struct snd_kcontrol *, | |
22 | struct snd_ctl_elem_value *); | |
23 | ||
62a93947 TI |
24 | static void call_micmute_led_update(void) |
25 | { | |
26 | int val; | |
27 | ||
28 | switch (dell_led_mode) { | |
29 | case MICMUTE_LED_ON: | |
30 | val = 1; | |
31 | break; | |
32 | case MICMUTE_LED_OFF: | |
33 | val = 0; | |
34 | break; | |
35 | case MICMUTE_LED_FOLLOW_CAPTURE: | |
36 | val = dell_capture; | |
37 | break; | |
38 | case MICMUTE_LED_FOLLOW_MUTE: | |
39 | default: | |
40 | val = !dell_capture; | |
41 | break; | |
42 | } | |
43 | ||
44 | if (val == dell_led_value) | |
45 | return; | |
46 | dell_led_value = val; | |
47 | dell_micmute_led_set_func(dell_led_value); | |
48 | } | |
49 | ||
00ef9940 HW |
50 | static void update_dell_wmi_micmute_led(struct hda_codec *codec, |
51 | struct snd_kcontrol *kcontrol, | |
52 | struct snd_ctl_elem_value *ucontrol) | |
53 | { | |
54 | if (dell_old_cap_hook) | |
55 | dell_old_cap_hook(codec, kcontrol, ucontrol); | |
56 | ||
5dba8804 | 57 | if (!ucontrol || !dell_micmute_led_set_func) |
00ef9940 HW |
58 | return; |
59 | if (strcmp("Capture Switch", ucontrol->id.name) == 0 && ucontrol->id.index == 0) { | |
60 | /* TODO: How do I verify if it's a mono or stereo here? */ | |
62a93947 TI |
61 | dell_capture = (ucontrol->value.integer.value[0] || |
62 | ucontrol->value.integer.value[1]); | |
63 | call_micmute_led_update(); | |
00ef9940 HW |
64 | } |
65 | } | |
66 | ||
62a93947 TI |
67 | static int dell_mic_mute_led_mode_info(struct snd_kcontrol *kcontrol, |
68 | struct snd_ctl_elem_info *uinfo) | |
69 | { | |
70 | static const char * const texts[] = { | |
71 | "On", "Off", "Follow Capture", "Follow Mute", | |
72 | }; | |
73 | ||
74 | return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts); | |
75 | } | |
76 | ||
77 | static int dell_mic_mute_led_mode_get(struct snd_kcontrol *kcontrol, | |
78 | struct snd_ctl_elem_value *ucontrol) | |
79 | { | |
80 | ucontrol->value.enumerated.item[0] = dell_led_mode; | |
81 | return 0; | |
82 | } | |
83 | ||
84 | static int dell_mic_mute_led_mode_put(struct snd_kcontrol *kcontrol, | |
85 | struct snd_ctl_elem_value *ucontrol) | |
86 | { | |
87 | unsigned int mode; | |
88 | ||
89 | mode = ucontrol->value.enumerated.item[0]; | |
90 | if (mode > MICMUTE_LED_FOLLOW_MUTE) | |
91 | mode = MICMUTE_LED_FOLLOW_MUTE; | |
92 | if (mode == dell_led_mode) | |
93 | return 0; | |
94 | dell_led_mode = mode; | |
95 | call_micmute_led_update(); | |
96 | return 1; | |
97 | } | |
98 | ||
99 | static const struct snd_kcontrol_new dell_mic_mute_mode_ctls[] = { | |
100 | { | |
101 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
102 | .name = "Mic Mute-LED Mode", | |
103 | .info = dell_mic_mute_led_mode_info, | |
104 | .get = dell_mic_mute_led_mode_get, | |
105 | .put = dell_mic_mute_led_mode_put, | |
106 | }, | |
107 | {} | |
108 | }; | |
00ef9940 HW |
109 | |
110 | static void alc_fixup_dell_wmi(struct hda_codec *codec, | |
111 | const struct hda_fixup *fix, int action) | |
112 | { | |
113 | struct alc_spec *spec = codec->spec; | |
114 | bool removefunc = false; | |
115 | ||
116 | if (action == HDA_FIXUP_ACT_PROBE) { | |
5dba8804 MK |
117 | if (!dell_micmute_led_set_func) |
118 | dell_micmute_led_set_func = symbol_request(dell_micmute_led_set); | |
119 | if (!dell_micmute_led_set_func) { | |
fa5923ce | 120 | codec_warn(codec, "Failed to find dell wmi symbol dell_micmute_led_set\n"); |
00ef9940 HW |
121 | return; |
122 | } | |
123 | ||
124 | removefunc = true; | |
5dba8804 | 125 | if (dell_micmute_led_set_func(false) >= 0) { |
00ef9940 | 126 | dell_led_value = 0; |
4875a5f7 | 127 | if (spec->gen.num_adc_nids > 1 && !spec->gen.dyn_adc_switch) |
00ef9940 HW |
128 | codec_dbg(codec, "Skipping micmute LED control due to several ADCs"); |
129 | else { | |
130 | dell_old_cap_hook = spec->gen.cap_sync_hook; | |
131 | spec->gen.cap_sync_hook = update_dell_wmi_micmute_led; | |
132 | removefunc = false; | |
62a93947 | 133 | add_mixer(spec, dell_mic_mute_mode_ctls); |
00ef9940 HW |
134 | } |
135 | } | |
136 | ||
137 | } | |
138 | ||
5dba8804 | 139 | if (dell_micmute_led_set_func && (action == HDA_FIXUP_ACT_FREE || removefunc)) { |
fa5923ce | 140 | symbol_put(dell_micmute_led_set); |
5dba8804 | 141 | dell_micmute_led_set_func = NULL; |
00ef9940 HW |
142 | dell_old_cap_hook = NULL; |
143 | } | |
144 | } | |
145 | ||
44319ab7 | 146 | #else /* CONFIG_DELL_LAPTOP */ |
00ef9940 HW |
147 | static void alc_fixup_dell_wmi(struct hda_codec *codec, |
148 | const struct hda_fixup *fix, int action) | |
149 | { | |
150 | } | |
151 | ||
44319ab7 | 152 | #endif /* CONFIG_DELL_LAPTOP */ |