include/sound/hda_regmap.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * HD-audio regmap helpers
   4  */
   5
   6 #ifndef __SOUND_HDA_REGMAP_H
   7 #define __SOUND_HDA_REGMAP_H
   8
   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
  15 int snd_hdac_regmap_init(struct hdac_device *codec);
  16 void snd_hdac_regmap_exit(struct hdac_device *codec);
  17 int snd_hdac_regmap_add_vendor_verb(struct hdac_device *codec,
  18                                     unsigned int verb);
  19 int snd_hdac_regmap_read_raw(struct hdac_device *codec, unsigned int reg,
  20                              unsigned int *val);
  21 int snd_hdac_regmap_read_raw_uncached(struct hdac_device *codec,
  22                                       unsigned int reg, unsigned int *val);
  23 int snd_hdac_regmap_write_raw(struct hdac_device *codec, unsigned int reg,
  24                               unsigned int val);
  25 int snd_hdac_regmap_update_raw(struct hdac_device *codec, unsigned int reg,
  26                                unsigned int mask, unsigned int val);
  27
  28 /**
  29  * snd_hdac_regmap_encode_verb - encode the verb to a pseudo register
  30  * @nid: widget NID
  31  * @verb: codec verb
  32  *
  33  * Returns an encoded pseudo register.
  34  */
  35 #define snd_hdac_regmap_encode_verb(nid, verb)          \
  36         (((verb) << 8) | 0x80000 | ((unsigned int)(nid) << 20))
  37
  38 /**
  39  * snd_hdac_regmap_encode_amp - encode the AMP verb to a pseudo register
  40  * @nid: widget NID
  41  * @ch: channel (left = 0, right = 1)
  42  * @dir: direction (#HDA_INPUT, #HDA_OUTPUT)
  43  * @idx: input index value
  44  *
  45  * Returns an encoded pseudo register.
  46  */
  47 #define snd_hdac_regmap_encode_amp(nid, ch, dir, idx)                   \
  48         (snd_hdac_regmap_encode_verb(nid, AC_VERB_GET_AMP_GAIN_MUTE) |  \
  49          ((ch) ? AC_AMP_GET_RIGHT : AC_AMP_GET_LEFT) |                  \
  50          ((dir) == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT) | \
  51          (idx))
  52
  53 /**
  54  * snd_hdac_regmap_encode_amp_stereo - encode a pseudo register for stereo AMPs
  55  * @nid: widget NID
  56  * @dir: direction (#HDA_INPUT, #HDA_OUTPUT)
  57  * @idx: input index value
  58  *
  59  * Returns an encoded pseudo register.
  60  */
  61 #define snd_hdac_regmap_encode_amp_stereo(nid, dir, idx)                \
  62         (snd_hdac_regmap_encode_verb(nid, AC_VERB_GET_AMP_GAIN_MUTE) |  \
  63          AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT | /* both bits set! */      \
  64          ((dir) == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT) | \
  65          (idx))
  66
  67 /**
  68  * snd_hdac_regmap_write - Write a verb with caching
  69  * @nid: codec NID
  70  * @reg: verb to write
  71  * @val: value to write
  72  *
  73  * For writing an amp value, use snd_hdac_regmap_update_amp().
  74  */
  75 static inline int
  76 snd_hdac_regmap_write(struct hdac_device *codec, hda_nid_t nid,
  77                       unsigned int verb, unsigned int val)
  78 {
  79         unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb);
  80
  81         return snd_hdac_regmap_write_raw(codec, cmd, val);
  82 }
  83
  84 /**
  85  * snd_hda_regmap_update - Update a verb value with caching
  86  * @nid: codec NID
  87  * @verb: verb to update
  88  * @mask: bit mask to update
  89  * @val: value to update
  90  *
  91  * For updating an amp value, use snd_hdac_regmap_update_amp().
  92  */
  93 static inline int
  94 snd_hdac_regmap_update(struct hdac_device *codec, hda_nid_t nid,
  95                        unsigned int verb, unsigned int mask,
  96                        unsigned int val)
  97 {
  98         unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb);
  99
 100         return snd_hdac_regmap_update_raw(codec, cmd, mask, val);
 101 }
 102
 103 /**
 104  * snd_hda_regmap_read - Read a verb with caching
 105  * @nid: codec NID
 106  * @verb: verb to read
 107  * @val: pointer to store the value
 108  *
 109  * For reading an amp value, use snd_hda_regmap_get_amp().
 110  */
 111 static inline int
 112 snd_hdac_regmap_read(struct hdac_device *codec, hda_nid_t nid,
 113                      unsigned int verb, unsigned int *val)
 114 {
 115         unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb);
 116
 117         return snd_hdac_regmap_read_raw(codec, cmd, val);
 118 }
 119
 120 /**
 121  * snd_hdac_regmap_get_amp - Read AMP value
 122  * @codec: HD-audio codec
 123  * @nid: NID to read the AMP value
 124  * @ch: channel (left=0 or right=1)
 125  * @direction: #HDA_INPUT or #HDA_OUTPUT
 126  * @index: the index value (only for input direction)
 127  * @val: the pointer to store the value
 128  *
 129  * Read AMP value.  The volume is between 0 to 0x7f, 0x80 = mute bit.
 130  * Returns the value or a negative error.
 131  */
 132 static inline int
 133 snd_hdac_regmap_get_amp(struct hdac_device *codec, hda_nid_t nid,
 134                         int ch, int dir, int idx)
 135 {
 136         unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx);
 137         int err, val;
 138
 139         err = snd_hdac_regmap_read_raw(codec, cmd, &val);
 140         return err < 0 ? err : val;
 141 }
 142
 143 /**
 144  * snd_hdac_regmap_update_amp - update the AMP value
 145  * @codec: HD-audio codec
 146  * @nid: NID to read the AMP value
 147  * @ch: channel (left=0 or right=1)
 148  * @direction: #HDA_INPUT or #HDA_OUTPUT
 149  * @idx: the index value (only for input direction)
 150  * @mask: bit mask to set
 151  * @val: the bits value to set
 152  *
 153  * Update the AMP value with a bit mask.
 154  * Returns 0 if the value is unchanged, 1 if changed, or a negative error.
 155  */
 156 static inline int
 157 snd_hdac_regmap_update_amp(struct hdac_device *codec, hda_nid_t nid,
 158                            int ch, int dir, int idx, int mask, int val)
 159 {
 160         unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx);
 161
 162         return snd_hdac_regmap_update_raw(codec, cmd, mask, val);
 163 }
 164
 165 /**
 166  * snd_hdac_regmap_get_amp_stereo - Read stereo AMP values
 167  * @codec: HD-audio codec
 168  * @nid: NID to read the AMP value
 169  * @ch: channel (left=0 or right=1)
 170  * @direction: #HDA_INPUT or #HDA_OUTPUT
 171  * @index: the index value (only for input direction)
 172  * @val: the pointer to store the value
 173  *
 174  * Read stereo AMP values.  The lower byte is left, the upper byte is right.
 175  * Returns the value or a negative error.
 176  */
 177 static inline int
 178 snd_hdac_regmap_get_amp_stereo(struct hdac_device *codec, hda_nid_t nid,
 179                                int dir, int idx)
 180 {
 181         unsigned int cmd = snd_hdac_regmap_encode_amp_stereo(nid, dir, idx);
 182         int err, val;
 183
 184         err = snd_hdac_regmap_read_raw(codec, cmd, &val);
 185         return err < 0 ? err : val;
 186 }
 187
 188 /**
 189  * snd_hdac_regmap_update_amp_stereo - update the stereo AMP value
 190  * @codec: HD-audio codec
 191  * @nid: NID to read the AMP value
 192  * @direction: #HDA_INPUT or #HDA_OUTPUT
 193  * @idx: the index value (only for input direction)
 194  * @mask: bit mask to set
 195  * @val: the bits value to set
 196  *
 197  * Update the stereo AMP value with a bit mask.
 198  * The lower byte is left, the upper byte is right.
 199  * Returns 0 if the value is unchanged, 1 if changed, or a negative error.
 200  */
 201 static inline int
 202 snd_hdac_regmap_update_amp_stereo(struct hdac_device *codec, hda_nid_t nid,
 203                                   int dir, int idx, int mask, int val)
 204 {
 205         unsigned int cmd = snd_hdac_regmap_encode_amp_stereo(nid, dir, idx);
 206
 207         return snd_hdac_regmap_update_raw(codec, cmd, mask, val);
 208 }
 209
 210 /**
 211  * snd_hdac_regmap_sync_node - sync the widget node attributes
 212  * @codec: HD-audio codec
 213  * @nid: NID to sync
 214  */
 215 static inline void
 216 snd_hdac_regmap_sync_node(struct hdac_device *codec, hda_nid_t nid)
 217 {
 218         regcache_mark_dirty(codec->regmap);
 219         regcache_sync_region(codec->regmap, nid << 20, ((nid + 1) << 20) - 1);
 220 }
 221
 222 #endif /* __SOUND_HDA_REGMAP_H */