ALSA: hda/proc - print DP-MST connections (19bb4f78) · Commits · 戴 / test

sound/pci/hda/hda_proc.c

+37 −1

Original line number	Diff line number	Diff line
		@@ -679,6 +679,38 @@ static void print_gpio(struct snd_info_buffer *buffer,
		print_nid_array(buffer, codec, nid, &codec->nids);
		}

		static void print_dpmst_connections(struct snd_info_buffer buffer, struct hda_codec codec,
		hda_nid_t nid, int dev_num)
		{
		int c, conn_len, curr, dev_id_saved;
		hda_nid_t *conn;

		conn_len = snd_hda_get_num_raw_conns(codec, nid);
		if (conn_len <= 0)
		return;

		conn = kmalloc_array(conn_len, sizeof(hda_nid_t), GFP_KERNEL);
		if (!conn)
		return;

		dev_id_saved = snd_hda_get_dev_select(codec, nid);

		snd_hda_set_dev_select(codec, nid, dev_num);
		curr = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONNECT_SEL, 0);
		if (snd_hda_get_raw_connections(codec, nid, conn, conn_len) < 0)
		goto out;

		for (c = 0; c < conn_len; c++) {
		snd_iprintf(buffer, " 0x%02x", conn[c]);
		if (c == curr)
		snd_iprintf(buffer, "*");
		}

		out:
		kfree(conn);
		snd_hda_set_dev_select(codec, nid, dev_id_saved);
		}

		static void print_device_list(struct snd_info_buffer *buffer,
		struct hda_codec *codec, hda_nid_t nid)
		{
		@@ -702,10 +734,14 @@ static void print_device_list(struct snd_info_buffer *buffer,
		snd_iprintf(buffer, " ");

		snd_iprintf(buffer,
		"Dev %02d: PD = %d, ELDV = %d, IA = %d\n", i,
		"Dev %02d: PD = %d, ELDV = %d, IA = %d, Connections [", i,
		!!(dev_list[i] & AC_DE_PD),
		!!(dev_list[i] & AC_DE_ELDV),
		!!(dev_list[i] & AC_DE_IA));

		print_dpmst_connections(buffer, codec, nid, i);

		snd_iprintf(buffer, " ]\n");
		}
		}