ALSA: create hda_eld.c for ELD routines and proc interface

ELD handling routines can be shared by all HDMI codecs,
and they are large enough to make a standalone source file.

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

1 files changed, 41 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index d7e3a164effe..e1b76686672a 100644
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -443,4 +443,45 @@ int snd_hda_check_amp_list_power(struct hda_codec *codec,
 #define get_amp_direction(kc)   (((kc)->private_value >> 18) & 0x1)
 #define get_amp_index(kc)       (((kc)->private_value >> 19) & 0xf)
 
+/*
+ * CEA Short Audio Descriptor data
+ */
+struct cea_sad {
+        int     channels;
+        int     format;         /* (format == 0) indicates invalid SAD */
+        int     rates;
+        int     sample_bits;    /* for LPCM */
+        int     max_bitrate;    /* for AC3...ATRAC */
+        int     profile;        /* for WMAPRO */
+};
+
+#define ELD_FIXED_BYTES 20
+#define ELD_MAX_MNL     16
+#define ELD_MAX_SAD     16
+
+/*
+ * ELD: EDID Like Data
+ */
+struct sink_eld {
+        int     eld_size;
+        int     baseline_len;
+        int     eld_ver;        /* (eld_ver == 0) indicates invalid ELD */
+        int     cea_edid_ver;
+        char    monitor_name[ELD_MAX_MNL + 1];
+        int     manufacture_id;
+        int     product_id;
+        u64     port_id;
+        int     support_hdcp;
+        int     support_ai;
+        int     conn_type;
+        int     aud_synch_delay;
+        int     spk_alloc;
+        int     sad_count;
+        struct cea_sad sad[ELD_MAX_SAD];
+};
+
+int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid);
+int snd_hdmi_get_eld(struct sink_eld *, struct hda_codec *, hda_nid_t);
+void snd_hdmi_show_eld(struct sink_eld *eld);
+
 #endif /* __SOUND_HDA_LOCAL_H */