ALSA: hda - Use regmap for parameter caches, too

The amp hash table was used for recording the cached reads of some
capability values like pin caps or amp caps.  Now all these are moved
to regmap as well.

One addition to the regmap helper is codec->caps_overwriting flag.
This is set in snd_hdac_override_parm(), and the regmap helper accepts
any register while this flag is set, so that it can overwrite even the
read-only verb like AC_VERB_PARAMETERS.  The flag is cleared
immediately in snd_hdac_override_parm(), as it's a once-off flag.

Along with these changes, the no longer needed amp hash and relevant
fields are removed from hda_codec struct now.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index 65ea6429f3a7..ce7d8d1f59c6 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -76,6 +76,7 @@ struct hdac_device {
         /* regmap */
         struct regmap *regmap;
         bool lazy_cache:1;      /* don't wake up for writes */
+        bool caps_overwriting:1; /* caps overwrite being in process */
 };
 
 /* device/driver type used for matching */
@@ -109,6 +110,8 @@ int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
                         unsigned int *res);
 int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
                                 int parm);
+int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid,
+                           unsigned int parm, unsigned int val);
 int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
                              hda_nid_t *conn_list, int max_conns);
 int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,