1 files changed, 56 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_eld.c b/sound/pci/hda/hda_eld.c
index 248cddf0ee80..d2b7ccca3bb3 100644
--- a/sound/pci/hda/hda_eld.c
+++ b/sound/pci/hda/hda_eld.c
@@ -500,6 +500,59 @@ static void hdmi_print_eld_info(struct snd_info_entry *entry,
                 hdmi_print_sad_info(i, e->sad + i, buffer);
 }
 
+static void hdmi_write_eld_item(struct snd_info_entry *entry,
+                                struct snd_info_buffer *buffer)
+{
+        struct hdmi_eld *e = entry->private_data;
+        char line[64];
+        char name[64];
+        char *sname;
+        long long val;
+        int n;
+
+        while (!snd_info_get_line(buffer, line, sizeof(line))) {
+                if (sscanf(line, "%s %llx", name, &val) != 2)
+                        continue;
+                if (!strcmp(name, "connection_type"))
+                        e->conn_type = val;
+                else if (!strcmp(name, "port_id"))
+                        e->port_id = val;
+                else if (!strcmp(name, "support_hdcp"))
+                        e->support_hdcp = val;
+                else if (!strcmp(name, "support_ai"))
+                        e->support_ai = val;
+                else if (!strcmp(name, "audio_sync_delay"))
+                        e->aud_synch_delay = val;
+                else if (!strcmp(name, "speakers"))
+                        e->spk_alloc = val;
+                else if (!strcmp(name, "sad_count"))
+                        e->sad_count = val;
+                else if (!strncmp(name, "sad", 3)) {
+                        sname = name + 4;
+                        n = name[3] - '0';
+                        if (name[4] >= '0' && name[4] <= '9') {
+                                sname++;
+                                n = 10 * n + name[4] - '0';
+                        }
+                        if (n < 0 || n > 31) /* double the CEA limit */
+                                continue;
+                        if (!strcmp(sname, "_coding_type"))
+                                e->sad[n].format = val;
+                        else if (!strcmp(sname, "_channels"))
+                                e->sad[n].channels = val;
+                        else if (!strcmp(sname, "_rates"))
+                                e->sad[n].rates = val;
+                        else if (!strcmp(sname, "_bits"))
+                                e->sad[n].sample_bits = val;
+                        else if (!strcmp(sname, "_max_bitrate"))
+                                e->sad[n].max_bitrate = val;
+                        if (n >= e->sad_count)
+                                e->sad_count = n + 1;
+                }
+        }
+}
+
+
 int snd_hda_eld_proc_new(struct hda_codec *codec, struct hdmi_eld *eld)
 {
         char name[32];
@@ -512,6 +565,9 @@ int snd_hda_eld_proc_new(struct hda_codec *codec, struct hdmi_eld *eld)
                 return err;
 
         snd_info_set_text_ops(entry, eld, hdmi_print_eld_info);
+        entry->c.text.write = hdmi_write_eld_item;
+        entry->mode |= S_IWUSR;
+
         return 0;
 }