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Commit c7b60a89 authored by Hui Wang's avatar Hui Wang Committed by Takashi Iwai
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ALSA: hda - Add keycode map for alc input device 



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: default avatarHui Wang <hui.wang@canonical.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 3694cb29

sound/pci/hda/patch_realtek.c

+16 −3
Original line number Diff line number Diff line
@@ -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");