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Commit 7a624ea5 authored by Mengdong Lin's avatar Mengdong Lin Committed by Takashi Iwai
Browse files

ALSA: hda - add device list & select info of display pins to codec proc file 



If a display codec supports multi-stream transport on the pins, the pin's
device list length and device entries will be exposed to codec proc file.

Signed-off-by: default avatarMengdong Lin <mengdong.lin@intel.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent f1aa0684

sound/pci/hda/hda_proc.c

+33 −0
Original line number Diff line number Diff line
@@ -582,6 +582,36 @@ static void print_gpio(struct snd_info_buffer *buffer, 
	print_nid_array(buffer, codec, nid, &codec->nids);

}



static void print_device_list(struct snd_info_buffer *buffer,

			    struct hda_codec *codec, hda_nid_t nid)

{

	int i, curr = -1;

	u8 dev_list[AC_MAX_DEV_LIST_LEN];

	int devlist_len;



	devlist_len = snd_hda_get_devices(codec, nid, dev_list,

					AC_MAX_DEV_LIST_LEN);

	snd_iprintf(buffer, "  Devices: %d\n", devlist_len);

	if (devlist_len <= 0)

		return;



	curr = snd_hda_codec_read(codec, nid, 0,

				AC_VERB_GET_DEVICE_SEL, 0);



	for (i = 0; i < devlist_len; i++) {

		if (i == curr)

			snd_iprintf(buffer, "    *");

		else

			snd_iprintf(buffer, "     ");



		snd_iprintf(buffer,

			"Dev %02d: PD = %d, ELDV = %d, IA = %d\n", i,

			!!(dev_list[i] & AC_DE_PD),

			!!(dev_list[i] & AC_DE_ELDV),

			!!(dev_list[i] & AC_DE_IA));

	}

}



static void print_codec_info(struct snd_info_entry *entry,

			     struct snd_info_buffer *buffer)

{
@@ -751,6 +781,9 @@ static void print_codec_info(struct snd_info_entry *entry, 
				    (wid_caps & AC_WCAP_DELAY) >>

				    AC_WCAP_DELAY_SHIFT);



		if (wid_type == AC_WID_PIN && codec->dp_mst)

			print_device_list(buffer, codec, nid);



		if (wid_caps & AC_WCAP_CONN_LIST)

			print_conn_list(buffer, codec, nid, wid_type,

					conn, conn_len);