ALSA: hda - Use regmap for amp accesses
authorTakashi Iwai <tiwai@suse.de>
Wed, 25 Feb 2015 14:18:50 +0000 (15:18 +0100)
committerTakashi Iwai <tiwai@suse.de>
Mon, 23 Mar 2015 12:19:39 +0000 (13:19 +0100)
commiteeecd9d10d3da0b9efd6f58fad55c4355dcc246a
tree8a664234ab300d8275d9d1acc604f52b5c7d0270
parent9ba17b4d132f56a680fa1ba0bc2a8f98b6263d93
ALSA: hda - Use regmap for amp accesses

This patch converts the amp access functions to the regmap helpers.
The amp values were formerly cached in the own hash table.  Now it's
dropped by the regmap's cache.

The only tricky conversion is snd_hda_codec_amp_init().  This function
shouldn't do anything if the amp was already initialized.  For
achieving this behavior, a value is read once at first temporarily in
the cache-only mode.  Only if it returns an error,  i.e. the item
still doesn't exist in the cache, it proceeds to the update.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/hda/hda_codec.c
sound/pci/hda/hda_local.h
sound/pci/hda/patch_hdmi.c
sound/pci/hda/patch_realtek.c