The hda_tegra_disable_clocks() function is only used by the suspend and
resume code, so it needs to be included in the #ifdef CONFIG_PM_SLEEP
block to prevent the following warning:

  CC      sound/pci/hda/hda_tegra.o
sound/pci/hda/hda_tegra.c:238:13: warning: 'hda_tegra_disable_clocks' defined but not used [-Wunused-function]
 static void hda_tegra_disable_clocks(struct hda_tegra *data)
             ^
Signed-off-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

'status' is not used in the function. Remove it.
Signed-off-by: NSachin Kamat <sachin.kamat@samsung.com>
Tested-by: NDylan Reid <dgreid@chromium.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The "list" field has been omitted from struct azx, but its
initialization remained mistakenly in hda_tegra.c, which leads to a
compile error:
   sound/pci/hda/hda_tegra.c: In function 'hda_tegra_create':
   sound/pci/hda/hda_tegra.c:481:22: error: 'struct azx' has no member
named 'list'
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Fixes: 9a34af4a ('ALSA: hda - Move more PCI-controller-specific stuff from generic code')
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The very same notifier code is used in both hda_intel.c and
hda_tegra.c.  Move it to the generic code.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

... and move most parts into hda_intel.c from the generic controller
code.  This is a clean up, and there should be no functional change by
this patch.

Now, struct azx obtains the generic callbacks for getting the position
and the delay.  As default NULL, posbuf is read.  These replace the
old position_fix[], and each is implemented as a callback.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

When CONFIG_PM is disabled, the CONFIG_SND_HDA_POWER_SAVE_DEFAULT symbol
does not get defined, which causes a build error for the hda-tegra driver:

hda/hda_tegra.c:80:25: error: 'CONFIG_SND_HDA_POWER_SAVE_DEFAULT' undeclared here (not in a function)
 static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
                         ^
/git/arm-soc/sound/pci/hda/hda_tegra.c:235:13: warning: 'hda_tegra_disable_clocks' defined but not used [-Wunused-function]
 static void hda_tegra_disable_clocks(struct hda_tegra *data)
             ^

This works around the problem by not referencing that macro
when CONFIG_PM is disabled. Instead, we assume that it's disabled
unconditionally and cannot be enabled at runtime.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Cc: Dylan Reid <dgreid@chromium.org>
Cc: Stephen Warren <swarren@nvidia.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

I missed a rename during the review process.  Fix the
MODULE_DEVICE_TABLE to match the structure.
Signed-off-by: NDylan Reid <dgreid@chromium.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This adds a driver for the HDA block in Tegra SoCs.  The HDA bus is
used to communicate with the HDMI codec on Tegra124.

Most of the code is re-used from the Intel/PCI HDA driver.  It brings
over only two of the module params, power_save and probe_mask.
Signed-off-by: NDylan Reid <dgreid@chromium.org>
Reviewed-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>