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| author | Takashi Iwai <tiwai@suse.de> | 2015-02-26 13:57:47 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-03-23 13:19:37 +0100 |
| commit | 01ed3c06c6d5e7e861650ae76117dd4194d87316 (patch) | |
| tree | d75e171cd46b58c985848cfc46a3e0d3492c2496 /sound/hda | |
| parent | ALSA: hda - Add regmap support (diff) | |
| download | linux-01ed3c06c6d5e7e861650ae76117dd4194d87316.tar.xz linux-01ed3c06c6d5e7e861650ae76117dd4194d87316.zip | |
ALSA: hda - Use regmap for codec parameter reads
Let's start converting the access functions to regmap.
The first one is the simplest, just converting the codec parameter
read helper function snd_hda_param_read().
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/hda')
| -rw-r--r-- | sound/hda/hdac_device.c | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/sound/hda/hdac_device.c b/sound/hda/hdac_device.c index 6e8ee1d6974a..ba9c1fc6e3ea 100644 --- a/sound/hda/hdac_device.c +++ b/sound/hda/hdac_device.c @@ -9,6 +9,7 @@ #include <linux/export.h> #include <linux/pm_runtime.h> #include <sound/hdaudio.h> +#include <sound/hda_regmap.h> #include "local.h" static void setup_fg_nodes(struct hdac_device *codec); @@ -234,23 +235,19 @@ int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid, EXPORT_SYMBOL_GPL(snd_hdac_read); /** - * snd_hdac_read_parm - read a codec parameter - * @codec: the codec object - * @nid: NID to read a parameter - * @parm: parameter to read + * _snd_hdac_read_parm - read a parmeter * - * Returns -1 for error. If you need to distinguish the error more - * strictly, use snd_hdac_read() directly. + * This function returns zero or an error unlike snd_hdac_read_parm(). */ -int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm) +int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm, + unsigned int *res) { - int val; + unsigned int cmd; - if (snd_hdac_read(codec, nid, AC_VERB_PARAMETERS, parm, &val)) - return -1; - return val; + cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm; + return snd_hdac_regmap_read_raw(codec, cmd, res); } -EXPORT_SYMBOL_GPL(snd_hdac_read_parm); +EXPORT_SYMBOL_GPL(_snd_hdac_read_parm); /** * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes |