tree 97b7bd0cf5d4f3fb3baf5cce67148621e66f8e77
parent 926981ae3325257d0bffcf7ff7ba359edb4fd7e8
author Imre Deak <imre.deak@intel.com> 1420732457 +0200
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1421027303 +0100

ALSA: hda: add component support

Register a component master to be used to interface with the i915
driver. This is meant to replace the current interface which is based on
module symbol lookups.

Note that currently we keep the existing behavior and pin the i915
module while the hda driver is loaded. Using the component interface
allows us to remove this dependency once support for dynamically
enabling / disabling the HDMI functionality is added to the driver.

v2:
- change roles between the hda and i915 components (Daniel)
v3:
- rename display_component to audio_component (Daniel)
v4:
- move removal of i915_powerwell.h from this patch to the next (Takashi)
- request_module fails if module support isn't enabled, so ignore
  any error it returns and depend on the following NULL check of the
  component ops (Takashi)
- change over to using dev_* instead of pr_* (Takashi)

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>