summaryrefslogtreecommitdiff
path: root/sound/hda/hdac_i915.c
diff options
context:
space:
mode:
authorTakashi Iwai <tiwai@suse.de>2016-03-21 16:41:58 +0300
committerTakashi Iwai <tiwai@suse.de>2016-03-28 10:38:40 +0300
commitd745f5e7b8b2961f68b0b9093a0f914a8a83c2ae (patch)
tree0ce841aa86a1f3360a8e298124b7b60cd3779c98 /sound/hda/hdac_i915.c
parente85015a3797f2665cc6f0339e6407adc00ac4245 (diff)
downloadlinux-d745f5e7b8b2961f68b0b9093a0f914a8a83c2ae.tar.xz
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>
Diffstat (limited to 'sound/hda/hdac_i915.c')
-rw-r--r--sound/hda/hdac_i915.c45
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;