diff options
Diffstat (limited to 'include/sound')
-rw-r--r-- | include/sound/hda_regmap.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/include/sound/hda_regmap.h b/include/sound/hda_regmap.h index a6a4f3ddb469..76648ccfbbf8 100644 --- a/include/sound/hda_regmap.h +++ b/include/sound/hda_regmap.h @@ -46,6 +46,20 @@ int snd_hdac_regmap_update_raw(struct hdac_device *codec, unsigned int reg, (idx)) /** + * snd_hdac_regmap_encode_amp_stereo - encode a pseudo register for stereo AMPs + * @nid: widget NID + * @dir: direction (#HDA_INPUT, #HDA_OUTPUT) + * @idx: input index value + * + * Returns an encoded pseudo register. + */ +#define snd_hdac_regmap_encode_amp_stereo(nid, dir, idx) \ + (snd_hdac_regmap_encode_verb(nid, AC_VERB_GET_AMP_GAIN_MUTE) | \ + AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT | /* both bits set! */ \ + ((dir) == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT) | \ + (idx)) + +/** * snd_hdac_regmap_write - Write a verb with caching * @nid: codec NID * @reg: verb to write @@ -143,4 +157,49 @@ snd_hdac_regmap_update_amp(struct hdac_device *codec, hda_nid_t nid, return snd_hdac_regmap_update_raw(codec, cmd, mask, val); } +/** + * snd_hdac_regmap_get_amp_stereo - Read stereo AMP values + * @codec: HD-audio codec + * @nid: NID to read the AMP value + * @ch: channel (left=0 or right=1) + * @direction: #HDA_INPUT or #HDA_OUTPUT + * @index: the index value (only for input direction) + * @val: the pointer to store the value + * + * Read stereo AMP values. The lower byte is left, the upper byte is right. + * Returns the value or a negative error. + */ +static inline int +snd_hdac_regmap_get_amp_stereo(struct hdac_device *codec, hda_nid_t nid, + int dir, int idx) +{ + unsigned int cmd = snd_hdac_regmap_encode_amp_stereo(nid, dir, idx); + int err, val; + + err = snd_hdac_regmap_read_raw(codec, cmd, &val); + return err < 0 ? err : val; +} + +/** + * snd_hdac_regmap_update_amp_stereo - update the stereo AMP value + * @codec: HD-audio codec + * @nid: NID to read the AMP value + * @direction: #HDA_INPUT or #HDA_OUTPUT + * @idx: the index value (only for input direction) + * @mask: bit mask to set + * @val: the bits value to set + * + * Update the stereo AMP value with a bit mask. + * The lower byte is left, the upper byte is right. + * Returns 0 if the value is unchanged, 1 if changed, or a negative error. + */ +static inline int +snd_hdac_regmap_update_amp_stereo(struct hdac_device *codec, hda_nid_t nid, + int dir, int idx, int mask, int val) +{ + unsigned int cmd = snd_hdac_regmap_encode_amp_stereo(nid, dir, idx); + + return snd_hdac_regmap_update_raw(codec, cmd, mask, val); +} + #endif /* __SOUND_HDA_REGMAP_H */ |