ALSA: hda - ELD proc interface write updates

- rename ELD proc write routine to hdmi_write_eld_info()
- support modifying WMAPro's profile

Write to some ELD fields (monitor_name, manufacture_id, product_id,
eld_version, edid_version) are deliberately not supported, since that
won't correct wrong behaviors and only leads to confusions.

Signed-off-by: Wu Fengguang <wfg@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/hda_eld.c b/sound/pci/hda/hda_eld.c
index 3f10961a17b45cc50a324504d591ded871b9dc09..3c580ae07bd65237e1fef4f76fadf2ef4e39d403 100644 (file)
--- a/sound/pci/hda/hda_eld.c
+++ b/sound/pci/hda/hda_eld.c
@@ -502,7 +502,7 @@ 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,
+static void hdmi_write_eld_info(struct snd_info_entry *entry,
                                struct snd_info_buffer *buffer)
 {
        struct hdmi_eld *e = entry->private_data;
@@ -515,6 +515,11 @@ static void hdmi_write_eld_item(struct snd_info_entry *entry,
        while (!snd_info_get_line(buffer, line, sizeof(line))) {
                if (sscanf(line, "%s %llx", name, &val) != 2)
                        continue;
+               /*
+                * We don't allow modification to these fields:
+                *      monitor_name manufacture_id product_id
+                *      eld_version edid_version
+                */
                if (!strcmp(name, "connection_type"))
                        e->conn_type = val;
                else if (!strcmp(name, "port_id"))
@@ -548,6 +553,8 @@ static void hdmi_write_eld_item(struct snd_info_entry *entry,
                                e->sad[n].sample_bits = val;
                        else if (!strcmp(sname, "_max_bitrate"))
                                e->sad[n].max_bitrate = val;
+                       else if (!strcmp(sname, "_profile"))
+                               e->sad[n].profile = val;
                        if (n >= e->sad_count)
                                e->sad_count = n + 1;
                }
@@ -567,7 +574,7 @@ 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->c.text.write = hdmi_write_eld_info;
        entry->mode |= S_IWUSR;
        eld->proc_entry = entry;