Edit File: hda_regmap.h
/* SPDX-License-Identifier: GPL-2.0 */ /* * HD-audio regmap helpers */ #ifndef __SOUND_HDA_REGMAP_H #define __SOUND_HDA_REGMAP_H #include <linux/regmap.h> #include <sound/core.h> #include <sound/hdaudio.h> #define AC_AMP_FAKE_MUTE 0x10 /* fake mute bit set to amp verbs */ int snd_hdac_regmap_init(struct hdac_device *codec); void snd_hdac_regmap_exit(struct hdac_device *codec); int snd_hdac_regmap_add_vendor_verb(struct hdac_device *codec, unsigned int verb); int snd_hdac_regmap_read_raw(struct hdac_device *codec, unsigned int reg, unsigned int *val); int snd_hdac_regmap_read_raw_uncached(struct hdac_device *codec, unsigned int reg, unsigned int *val); int snd_hdac_regmap_write_raw(struct hdac_device *codec, unsigned int reg, unsigned int val); int snd_hdac_regmap_update_raw(struct hdac_device *codec, unsigned int reg, unsigned int mask, unsigned int val); /** * snd_hdac_regmap_encode_verb - encode the verb to a pseudo register * @nid: widget NID * @verb: codec verb * * Returns an encoded pseudo register. */ #define snd_hdac_regmap_encode_verb(nid, verb) \ (((verb) << 8) | 0x80000 | ((unsigned int)(nid) << 20)) /** * snd_hdac_regmap_encode_amp - encode the AMP verb to a pseudo register * @nid: widget NID * @ch: channel (left = 0, right = 1) * @dir: direction (#HDA_INPUT, #HDA_OUTPUT) * @idx: input index value * * Returns an encoded pseudo register. */ #define snd_hdac_regmap_encode_amp(nid, ch, dir, idx) \ (snd_hdac_regmap_encode_verb(nid, AC_VERB_GET_AMP_GAIN_MUTE) | \ ((ch) ? AC_AMP_GET_RIGHT : AC_AMP_GET_LEFT) | \ ((dir) == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT) | \ (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 * @val: value to write * * For writing an amp value, use snd_hda_regmap_amp_update(). */ static inline int snd_hdac_regmap_write(struct hdac_device *codec, hda_nid_t nid, unsigned int verb, unsigned int val) { unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb); return snd_hdac_regmap_write_raw(codec, cmd, val); } /** * snd_hda_regmap_update - Update a verb value with caching * @nid: codec NID * @verb: verb to update * @mask: bit mask to update * @val: value to update * * For updating an amp value, use snd_hda_regmap_amp_update(). */ static inline int snd_hdac_regmap_update(struct hdac_device *codec, hda_nid_t nid, unsigned int verb, unsigned int mask, unsigned int val) { unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb); return snd_hdac_regmap_update_raw(codec, cmd, mask, val); } /** * snd_hda_regmap_read - Read a verb with caching * @nid: codec NID * @verb: verb to read * @val: pointer to store the value * * For reading an amp value, use snd_hda_regmap_get_amp(). */ static inline int snd_hdac_regmap_read(struct hdac_device *codec, hda_nid_t nid, unsigned int verb, unsigned int *val) { unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb); return snd_hdac_regmap_read_raw(codec, cmd, val); } /** * snd_hdac_regmap_get_amp - Read AMP value * @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 AMP value. The volume is between 0 to 0x7f, 0x80 = mute bit. * Returns the value or a negative error. */ static inline int snd_hdac_regmap_get_amp(struct hdac_device *codec, hda_nid_t nid, int ch, int dir, int idx) { unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx); int err, val; err = snd_hdac_regmap_read_raw(codec, cmd, &val); return err < 0 ? err : val; } /** * snd_hdac_regmap_update_amp - update the AMP value * @codec: HD-audio codec * @nid: NID to read the AMP value * @ch: channel (left=0 or right=1) * @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 AMP value with a bit mask. * Returns 0 if the value is unchanged, 1 if changed, or a negative error. */ static inline int snd_hdac_regmap_update_amp(struct hdac_device *codec, hda_nid_t nid, int ch, int dir, int idx, int mask, int val) { unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx); 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); } /** * snd_hdac_regmap_sync_node - sync the widget node attributes * @codec: HD-audio codec * @nid: NID to sync */ static inline void snd_hdac_regmap_sync_node(struct hdac_device *codec, hda_nid_t nid) { regcache_mark_dirty(codec->regmap); regcache_sync_region(codec->regmap, nid << 20, ((nid + 1) << 20) - 1); } #endif /* __SOUND_HDA_REGMAP_H */