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ALSA: hda - Add keycode map for alc input device

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Then users can remap the keycode from userspace. If without the remap,
the input device will pass KEY_MICMUTE to userspace, but in X11 layer,
it uses KEY_F20 rather than KEY_MICMUTE for XF86AudioMicMute. After
adding the keycode map, users can remap the keycode to any value users
want.

Cc: <stable@vger.kernel.org>
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Hui Wang 2015-12-28 11:35:25 +08:00 committed by Takashi Iwai
parent 3694cb2947
commit c7b60a8951
1 changed files with 16 additions and 3 deletions
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19
sound/pci/hda/patch_realtek.c
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@ -67,6 +67,10 @@ enum {
ALC_HEADSET_TYPE_OMTP,
};
enum {
ALC_KEY_MICMUTE_INDEX,
};
struct alc_customize_define {
unsigned int sku_cfg;
unsigned char port_connectivity;
@ -123,6 +127,7 @@ struct alc_spec {
unsigned int pll_coef_idx, pll_coef_bit;
unsigned int coef0;
struct input_dev *kb_dev;
u8 alc_mute_keycode_map[1];
};
/*
@ -3462,24 +3467,32 @@ static void gpio2_mic_hotkey_event(struct hda_codec *codec,
/* GPIO2 just toggles on a keypress/keyrelease cycle. Therefore
send both key on and key off event for every interrupt. */
input_report_key(spec->kb_dev, KEY_MICMUTE, 1);
input_report_key(spec->kb_dev, spec->alc_mute_keycode_map[ALC_KEY_MICMUTE_INDEX], 1);
input_sync(spec->kb_dev);
input_report_key(spec->kb_dev, KEY_MICMUTE, 0);
input_report_key(spec->kb_dev, spec->alc_mute_keycode_map[ALC_KEY_MICMUTE_INDEX], 0);
input_sync(spec->kb_dev);
}
static int alc_register_micmute_input_device(struct hda_codec *codec)
{
struct alc_spec *spec = codec->spec;
int i;
spec->kb_dev = input_allocate_device();
if (!spec->kb_dev) {
codec_err(codec, "Out of memory (input_allocate_device)\n");
return -ENOMEM;
}
spec->alc_mute_keycode_map[ALC_KEY_MICMUTE_INDEX] = KEY_MICMUTE;
spec->kb_dev->name = "Microphone Mute Button";
spec->kb_dev->evbit[0] = BIT_MASK(EV_KEY);
spec->kb_dev->keybit[BIT_WORD(KEY_MICMUTE)] = BIT_MASK(KEY_MICMUTE);
spec->kb_dev->keycodesize = sizeof(spec->alc_mute_keycode_map[0]);
spec->kb_dev->keycodemax = ARRAY_SIZE(spec->alc_mute_keycode_map);
spec->kb_dev->keycode = spec->alc_mute_keycode_map;
for (i = 0; i < ARRAY_SIZE(spec->alc_mute_keycode_map); i++)
set_bit(spec->alc_mute_keycode_map[i], spec->kb_dev->keybit);
if (input_register_device(spec->kb_dev)) {
codec_err(codec, "input_register_device failed\n");