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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * HD-audio regmap helpers4 */5 6#ifndef __SOUND_HDA_REGMAP_H7#define __SOUND_HDA_REGMAP_H8 9#include <linux/regmap.h>10#include <sound/core.h>11#include <sound/hdaudio.h>12 13#define AC_AMP_FAKE_MUTE 0x10 /* fake mute bit set to amp verbs */14 15int snd_hdac_regmap_init(struct hdac_device *codec);16void snd_hdac_regmap_exit(struct hdac_device *codec);17int snd_hdac_regmap_add_vendor_verb(struct hdac_device *codec,18 unsigned int verb);19int snd_hdac_regmap_read_raw(struct hdac_device *codec, unsigned int reg,20 unsigned int *val);21int snd_hdac_regmap_read_raw_uncached(struct hdac_device *codec,22 unsigned int reg, unsigned int *val);23int snd_hdac_regmap_write_raw(struct hdac_device *codec, unsigned int reg,24 unsigned int val);25int snd_hdac_regmap_update_raw(struct hdac_device *codec, unsigned int reg,26 unsigned int mask, unsigned int val);27int snd_hdac_regmap_update_raw_once(struct hdac_device *codec, unsigned int reg,28 unsigned int mask, unsigned int val);29void snd_hdac_regmap_sync(struct hdac_device *codec);30 31/**32 * snd_hdac_regmap_encode_verb - encode the verb to a pseudo register33 * @nid: widget NID34 * @verb: codec verb35 *36 * Returns an encoded pseudo register.37 */38#define snd_hdac_regmap_encode_verb(nid, verb) \39 (((verb) << 8) | 0x80000 | ((unsigned int)(nid) << 20))40 41/**42 * snd_hdac_regmap_encode_amp - encode the AMP verb to a pseudo register43 * @nid: widget NID44 * @ch: channel (left = 0, right = 1)45 * @dir: direction (#HDA_INPUT, #HDA_OUTPUT)46 * @idx: input index value47 *48 * Returns an encoded pseudo register.49 */50#define snd_hdac_regmap_encode_amp(nid, ch, dir, idx) \51 (snd_hdac_regmap_encode_verb(nid, AC_VERB_GET_AMP_GAIN_MUTE) | \52 ((ch) ? AC_AMP_GET_RIGHT : AC_AMP_GET_LEFT) | \53 ((dir) == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT) | \54 (idx))55 56/**57 * snd_hdac_regmap_encode_amp_stereo - encode a pseudo register for stereo AMPs58 * @nid: widget NID59 * @dir: direction (#HDA_INPUT, #HDA_OUTPUT)60 * @idx: input index value61 *62 * Returns an encoded pseudo register.63 */64#define snd_hdac_regmap_encode_amp_stereo(nid, dir, idx) \65 (snd_hdac_regmap_encode_verb(nid, AC_VERB_GET_AMP_GAIN_MUTE) | \66 AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT | /* both bits set! */ \67 ((dir) == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT) | \68 (idx))69 70/**71 * snd_hdac_regmap_write - Write a verb with caching72 * @nid: codec NID73 * @reg: verb to write74 * @val: value to write75 *76 * For writing an amp value, use snd_hdac_regmap_update_amp().77 */78static inline int79snd_hdac_regmap_write(struct hdac_device *codec, hda_nid_t nid,80 unsigned int verb, unsigned int val)81{82 unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb);83 84 return snd_hdac_regmap_write_raw(codec, cmd, val);85}86 87/**88 * snd_hda_regmap_update - Update a verb value with caching89 * @nid: codec NID90 * @verb: verb to update91 * @mask: bit mask to update92 * @val: value to update93 *94 * For updating an amp value, use snd_hdac_regmap_update_amp().95 */96static inline int97snd_hdac_regmap_update(struct hdac_device *codec, hda_nid_t nid,98 unsigned int verb, unsigned int mask,99 unsigned int val)100{101 unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb);102 103 return snd_hdac_regmap_update_raw(codec, cmd, mask, val);104}105 106/**107 * snd_hda_regmap_read - Read a verb with caching108 * @nid: codec NID109 * @verb: verb to read110 * @val: pointer to store the value111 *112 * For reading an amp value, use snd_hda_regmap_get_amp().113 */114static inline int115snd_hdac_regmap_read(struct hdac_device *codec, hda_nid_t nid,116 unsigned int verb, unsigned int *val)117{118 unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb);119 120 return snd_hdac_regmap_read_raw(codec, cmd, val);121}122 123/**124 * snd_hdac_regmap_get_amp - Read AMP value125 * @codec: HD-audio codec126 * @nid: NID to read the AMP value127 * @ch: channel (left=0 or right=1)128 * @direction: #HDA_INPUT or #HDA_OUTPUT129 * @index: the index value (only for input direction)130 * @val: the pointer to store the value131 *132 * Read AMP value. The volume is between 0 to 0x7f, 0x80 = mute bit.133 * Returns the value or a negative error.134 */135static inline int136snd_hdac_regmap_get_amp(struct hdac_device *codec, hda_nid_t nid,137 int ch, int dir, int idx)138{139 unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx);140 int err, val;141 142 err = snd_hdac_regmap_read_raw(codec, cmd, &val);143 return err < 0 ? err : val;144}145 146/**147 * snd_hdac_regmap_update_amp - update the AMP value148 * @codec: HD-audio codec149 * @nid: NID to read the AMP value150 * @ch: channel (left=0 or right=1)151 * @direction: #HDA_INPUT or #HDA_OUTPUT152 * @idx: the index value (only for input direction)153 * @mask: bit mask to set154 * @val: the bits value to set155 *156 * Update the AMP value with a bit mask.157 * Returns 0 if the value is unchanged, 1 if changed, or a negative error.158 */159static inline int160snd_hdac_regmap_update_amp(struct hdac_device *codec, hda_nid_t nid,161 int ch, int dir, int idx, int mask, int val)162{163 unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx);164 165 return snd_hdac_regmap_update_raw(codec, cmd, mask, val);166}167 168/**169 * snd_hdac_regmap_get_amp_stereo - Read stereo AMP values170 * @codec: HD-audio codec171 * @nid: NID to read the AMP value172 * @ch: channel (left=0 or right=1)173 * @direction: #HDA_INPUT or #HDA_OUTPUT174 * @index: the index value (only for input direction)175 * @val: the pointer to store the value176 *177 * Read stereo AMP values. The lower byte is left, the upper byte is right.178 * Returns the value or a negative error.179 */180static inline int181snd_hdac_regmap_get_amp_stereo(struct hdac_device *codec, hda_nid_t nid,182 int dir, int idx)183{184 unsigned int cmd = snd_hdac_regmap_encode_amp_stereo(nid, dir, idx);185 int err, val;186 187 err = snd_hdac_regmap_read_raw(codec, cmd, &val);188 return err < 0 ? err : val;189}190 191/**192 * snd_hdac_regmap_update_amp_stereo - update the stereo AMP value193 * @codec: HD-audio codec194 * @nid: NID to read the AMP value195 * @direction: #HDA_INPUT or #HDA_OUTPUT196 * @idx: the index value (only for input direction)197 * @mask: bit mask to set198 * @val: the bits value to set199 *200 * Update the stereo AMP value with a bit mask.201 * The lower byte is left, the upper byte is right.202 * Returns 0 if the value is unchanged, 1 if changed, or a negative error.203 */204static inline int205snd_hdac_regmap_update_amp_stereo(struct hdac_device *codec, hda_nid_t nid,206 int dir, int idx, int mask, int val)207{208 unsigned int cmd = snd_hdac_regmap_encode_amp_stereo(nid, dir, idx);209 210 return snd_hdac_regmap_update_raw(codec, cmd, mask, val);211}212 213/**214 * snd_hdac_regmap_sync_node - sync the widget node attributes215 * @codec: HD-audio codec216 * @nid: NID to sync217 */218static inline void219snd_hdac_regmap_sync_node(struct hdac_device *codec, hda_nid_t nid)220{221 regcache_mark_dirty(codec->regmap);222 regcache_sync_region(codec->regmap, nid << 20, ((nid + 1) << 20) - 1);223}224 225#endif /* __SOUND_HDA_REGMAP_H */226