linux/sound/hda
Takashi Iwai bfa5fb14fb ALSA: hda - Bind with i915 only when Intel graphics is present
On Skylake and onwards, the HD-audio controller driver needs to bind
with i915 for having the control of power well audio domain before
actually probing the codec.  This leads to the load of i915 driver
from the audio driver side.  But, there are systems that have no Intel
graphics but Nvidia or AMD GPU, although they still use HD-audio bus
for the onboard audio codecs.  On these, loading the i915 driver is
nothing but a useless memory and CPU consumption.

A simple way to avoid it is just to look for the Intel graphics PCI
entry beforehand, and try to bind with i915 only when such an entry is
found.  Currently, it assumes the PCI display class.  If another class
appears, this needs to be extended (although it's very unlikely).

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-04-04 11:46:17 +02:00
..
ext ALSA: hdac: add snd_hdac_ext_bus_link_power_up_all 2016-01-10 12:02:47 +00:00
array.c ALSA: hda - Move generic array helpers to core lib 2015-03-23 13:19:35 +01:00
hda_bus_type.c ALSA: hda - Advertise MODALIAS in uevent 2015-10-20 10:15:53 +02:00
hdac_bus.c ALSA: hda - Add / fix kernel doc comments 2015-10-28 12:37:29 +01:00
hdac_controller.c ALSA: hda - Loop interrupt handling until really cleared 2016-02-26 08:50:31 +01:00
hdac_device.c ALSA: hda - Fix unexpected resume through regmap code path 2016-03-08 10:49:02 +01:00
hdac_i915.c ALSA: hda - Bind with i915 only when Intel graphics is present 2016-04-04 11:46:17 +02:00
hdac_regmap.c ALSA: hda - Fix unexpected resume through regmap code path 2016-03-08 10:49:02 +01:00
hdac_stream.c ALSA: hda - Add / fix kernel doc comments 2015-10-28 12:37:29 +01:00
hdac_sysfs.c ALSA: hda - Add hdaudio bus modalias support 2015-10-20 10:15:09 +02:00
hdmi_chmap.c ALSA: hda - Use snd_hdac namespace prefix for chmap exported APIs 2016-03-07 15:46:06 +01:00
Kconfig ALSA: HDAC: move SND_HDA_PREALLOC_SIZE to core 2015-06-16 17:40:38 +02:00
local.h ALSA: hda - Add widget sysfs tree 2015-03-23 13:17:27 +01:00
Makefile ALSA: hda - Add hdmi chmap verb programming ops to chmap object 2016-03-07 15:41:31 +01:00
trace.c ALSA: hda - Re-add tracepoints to HD-audio core driver 2015-03-23 13:17:58 +01:00
trace.h ALSA: hda - add hdac stream trace 2015-05-18 10:06:20 +02:00