ALSA: hda - Add the pin / port mapping on Intel ILK and VLV

Intel IronLake and ValleyView platforms have different HDMI widget pin
and digital port mapping from other newer ones.  The recent ones
(HSW+) have NID 0x05 to 0x07 for port B to port D, while these chips
have NID 0x04 to 0x06.

For adapting this mapping, pass the codec object instead of the bus
object to snd_hdac_sync_audio_rate() and snd_hdac_acomp_get_eld() so
that they can check the codec ID and calculate the mapping properly.

The changes in the HDMI codec driver side will follow in the later
patch.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 34 insertions, 11 deletions

diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c
index fb96aead8257..750a4ea49fa9 100644
--- a/sound/hda/hdac_i915.c
+++ b/sound/hda/hdac_i915.c
@@ -118,22 +118,40 @@ int snd_hdac_get_display_clk(struct hdac_bus *bus)
 }
 EXPORT_SYMBOL_GPL(snd_hdac_get_display_clk);
 
-/* There is a fixed mapping between audio pin node and display port
- * on current Intel platforms:
+/* There is a fixed mapping between audio pin node and display port.
+ * on SNB, IVY, HSW, BSW, SKL, BXT, KBL:
  * Pin Widget 5 - PORT B (port = 1 in i915 driver)
  * Pin Widget 6 - PORT C (port = 2 in i915 driver)
  * Pin Widget 7 - PORT D (port = 3 in i915 driver)
+ *
+ * on VLV, ILK:
+ * Pin Widget 4 - PORT B (port = 1 in i915 driver)
+ * Pin Widget 5 - PORT C (port = 2 in i915 driver)
+ * Pin Widget 6 - PORT D (port = 3 in i915 driver)
  */
-static int pin2port(hda_nid_t pin_nid)
+static int pin2port(struct hdac_device *codec, hda_nid_t pin_nid)
 {
-        if (WARN_ON(pin_nid < 5 || pin_nid > 7))
+        int base_nid;
+
+        switch (codec->vendor_id) {
+        case 0x80860054: /* ILK */
+        case 0x80862804: /* ILK */
+        case 0x80862882: /* VLV */
+                base_nid = 3;
+                break;
+        default:
+                base_nid = 4;
+                break;
+        }
+
+        if (WARN_ON(pin_nid <= base_nid || pin_nid > base_nid + 3))
                 return -1;
-        return pin_nid - 4;
+        return pin_nid - base_nid;
 }
 
 /**
  * snd_hdac_sync_audio_rate - Set N/CTS based on the sample rate
- * @bus: HDA core bus
+ * @codec: HDA codec
  * @nid: the pin widget NID
  * @rate: the sample rate to set
  *
@@ -143,14 +161,15 @@ static int pin2port(hda_nid_t pin_nid)
  * This function sets N/CTS value based on the given sample rate.
  * Returns zero for success, or a negative error code.
  */
-int snd_hdac_sync_audio_rate(struct hdac_bus *bus, hda_nid_t nid, int rate)
+int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate)
 {
+        struct hdac_bus *bus = codec->bus;
         struct i915_audio_component *acomp = bus->audio_component;
         int port;
 
         if (!acomp || !acomp->ops || !acomp->ops->sync_audio_rate)
                 return -ENODEV;
-        port = pin2port(nid);
+        port = pin2port(codec, nid);
         if (port < 0)
                 return -EINVAL;
         return acomp->ops->sync_audio_rate(acomp->dev, port, rate);
@@ -159,7 +178,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
 
 /**
  * snd_hdac_acomp_get_eld - Get the audio state and ELD via component
- * @bus: HDA core bus
+ * @codec: HDA codec
  * @nid: the pin widget NID
  * @audio_enabled: the pointer to store the current audio state
  * @buffer: the buffer pointer to store ELD bytes
@@ -177,16 +196,17 @@ EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
  * thus it may be over @max_bytes.  If it's over @max_bytes, it implies
  * that only a part of ELD bytes have been fetched.
  */
-int snd_hdac_acomp_get_eld(struct hdac_bus *bus, hda_nid_t nid,
+int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid,
                            bool *audio_enabled, char *buffer, int max_bytes)
 {
+        struct hdac_bus *bus = codec->bus;
         struct i915_audio_component *acomp = bus->audio_component;
         int port;
 
         if (!acomp || !acomp->ops || !acomp->ops->get_eld)
                 return -ENODEV;
 
-        port = pin2port(nid);
+        port = pin2port(codec, nid);
         if (port < 0)
                 return -EINVAL;
         return acomp->ops->get_eld(acomp->dev, port, audio_enabled,
@@ -286,6 +306,9 @@ int snd_hdac_i915_init(struct hdac_bus *bus)
         struct i915_audio_component *acomp;
         int ret;
 
+        if (WARN_ON(hdac_acomp))
+                return -EBUSY;
+
         acomp = kzalloc(sizeof(*acomp), GFP_KERNEL);
         if (!acomp)
                 return -ENOMEM;