include/sound/hda_regmap.h

   1 /*
   2  * HD-audio regmap helpers
   3  */
   4
   5 #ifndef __SOUND_HDA_REGMAP_H
   6 #define __SOUND_HDA_REGMAP_H
   7
   8 #include <linux/regmap.h>
   9 #include <sound/core.h>
  10 #include <sound/hdaudio.h>
  11
  12 #define AC_AMP_FAKE_MUTE        0x10    /* fake mute bit set to amp verbs */
  13
  14 int snd_hdac_regmap_init(struct hdac_device *codec);
  15 void snd_hdac_regmap_exit(struct hdac_device *codec);
  16 int snd_hdac_regmap_add_vendor_verb(struct hdac_device *codec,
  17                                     unsigned int verb);
  18 int snd_hdac_regmap_read_raw(struct hdac_device *codec, unsigned int reg,
  19                              unsigned int *val);
  20 int snd_hdac_regmap_read_raw_uncached(struct hdac_device *codec,
  21                                       unsigned int reg, unsigned int *val);
  22 int snd_hdac_regmap_write_raw(struct hdac_device *codec, unsigned int reg,
  23                               unsigned int val);
  24 int snd_hdac_regmap_update_raw(struct hdac_device *codec, unsigned int reg,
  25                                unsigned int mask, unsigned int val);
  26
  27 /**
  28  * snd_hdac_regmap_encode_verb - encode the verb to a pseudo register
  29  * @nid: widget NID
  30  * @verb: codec verb
  31  *
  32  * Returns an encoded pseudo register.
  33  */
  34 #define snd_hdac_regmap_encode_verb(nid, verb)          \
  35         (((verb) << 8) | 0x80000 | ((unsigned int)(nid) << 20))
  36
  37 /**
  38  * snd_hdac_regmap_encode_amp - encode the AMP verb to a pseudo register
  39  * @nid: widget NID
  40  * @ch: channel (left = 0, right = 1)
  41  * @dir: direction (#HDA_INPUT, #HDA_OUTPUT)
  42  * @idx: input index value
  43  *
  44  * Returns an encoded pseudo register.
  45  */
  46 #define snd_hdac_regmap_encode_amp(nid, ch, dir, idx)                   \
  47         (snd_hdac_regmap_encode_verb(nid, AC_VERB_GET_AMP_GAIN_MUTE) |  \
  48          ((ch) ? AC_AMP_GET_RIGHT : AC_AMP_GET_LEFT) |                  \
  49          ((dir) == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT) | \
  50          (idx))
  51
  52 /**
  53  * snd_hdac_regmap_encode_amp_stereo - encode a pseudo register for stereo AMPs
  54  * @nid: widget NID
  55  * @dir: direction (#HDA_INPUT, #HDA_OUTPUT)
  56  * @idx: input index value
  57  *
  58  * Returns an encoded pseudo register.
  59  */
  60 #define snd_hdac_regmap_encode_amp_stereo(nid, dir, idx)                \
  61         (snd_hdac_regmap_encode_verb(nid, AC_VERB_GET_AMP_GAIN_MUTE) |  \
  62          AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT | /* both bits set! */      \
  63          ((dir) == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT) | \
  64          (idx))
  65
  66 /**
  67  * snd_hdac_regmap_write - Write a verb with caching
  68  * @nid: codec NID
  69  * @reg: verb to write
  70  * @val: value to write
  71  *
  72  * For writing an amp value, use snd_hdac_regmap_update_amp().
  73  */
  74 static inline int
  75 snd_hdac_regmap_write(struct hdac_device *codec, hda_nid_t nid,
  76                       unsigned int verb, unsigned int val)
  77 {
  78         unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb);
  79
  80         return snd_hdac_regmap_write_raw(codec, cmd, val);
  81 }
  82
  83 /**
  84  * snd_hda_regmap_update - Update a verb value with caching
  85  * @nid: codec NID
  86  * @verb: verb to update
  87  * @mask: bit mask to update
  88  * @val: value to update
  89  *
  90  * For updating an amp value, use snd_hdac_regmap_update_amp().
  91  */
  92 static inline int
  93 snd_hdac_regmap_update(struct hdac_device *codec, hda_nid_t nid,
  94                        unsigned int verb, unsigned int mask,
  95                        unsigned int val)
  96 {
  97         unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb);
  98
  99         return snd_hdac_regmap_update_raw(codec, cmd, mask, val);
 100 }
 101
 102 /**
 103  * snd_hda_regmap_read - Read a verb with caching
 104  * @nid: codec NID
 105  * @verb: verb to read
 106  * @val: pointer to store the value
 107  *
 108  * For reading an amp value, use snd_hda_regmap_get_amp().
 109  */
 110 static inline int
 111 snd_hdac_regmap_read(struct hdac_device *codec, hda_nid_t nid,
 112                      unsigned int verb, unsigned int *val)
 113 {
 114         unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb);
 115
 116         return snd_hdac_regmap_read_raw(codec, cmd, val);
 117 }
 118
 119 /**
 120  * snd_hdac_regmap_get_amp - Read AMP value
 121  * @codec: HD-audio codec
 122  * @nid: NID to read the AMP value
 123  * @ch: channel (left=0 or right=1)
 124  * @direction: #HDA_INPUT or #HDA_OUTPUT
 125  * @index: the index value (only for input direction)
 126  * @val: the pointer to store the value
 127  *
 128  * Read AMP value.  The volume is between 0 to 0x7f, 0x80 = mute bit.
 129  * Returns the value or a negative error.
 130  */
 131 static inline int
 132 snd_hdac_regmap_get_amp(struct hdac_device *codec, hda_nid_t nid,
 133                         int ch, int dir, int idx)
 134 {
 135         unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx);
 136         int err, val;
 137
 138         err = snd_hdac_regmap_read_raw(codec, cmd, &val);
 139         return err < 0 ? err : val;
 140 }
 141
 142 /**
 143  * snd_hdac_regmap_update_amp - update the AMP value
 144  * @codec: HD-audio codec
 145  * @nid: NID to read the AMP value
 146  * @ch: channel (left=0 or right=1)
 147  * @direction: #HDA_INPUT or #HDA_OUTPUT
 148  * @idx: the index value (only for input direction)
 149  * @mask: bit mask to set
 150  * @val: the bits value to set
 151  *
 152  * Update the AMP value with a bit mask.
 153  * Returns 0 if the value is unchanged, 1 if changed, or a negative error.
 154  */
 155 static inline int
 156 snd_hdac_regmap_update_amp(struct hdac_device *codec, hda_nid_t nid,
 157                            int ch, int dir, int idx, int mask, int val)
 158 {
 159         unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx);
 160
 161         return snd_hdac_regmap_update_raw(codec, cmd, mask, val);
 162 }
 163
 164 /**
 165  * snd_hdac_regmap_get_amp_stereo - Read stereo AMP values
 166  * @codec: HD-audio codec
 167  * @nid: NID to read the AMP value
 168  * @ch: channel (left=0 or right=1)
 169  * @direction: #HDA_INPUT or #HDA_OUTPUT
 170  * @index: the index value (only for input direction)
 171  * @val: the pointer to store the value
 172  *
 173  * Read stereo AMP values.  The lower byte is left, the upper byte is right.
 174  * Returns the value or a negative error.
 175  */
 176 static inline int
 177 snd_hdac_regmap_get_amp_stereo(struct hdac_device *codec, hda_nid_t nid,
 178                                int dir, int idx)
 179 {
 180         unsigned int cmd = snd_hdac_regmap_encode_amp_stereo(nid, dir, idx);
 181         int err, val;
 182
 183         err = snd_hdac_regmap_read_raw(codec, cmd, &val);
 184         return err < 0 ? err : val;
 185 }
 186
 187 /**
 188  * snd_hdac_regmap_update_amp_stereo - update the stereo AMP value
 189  * @codec: HD-audio codec
 190  * @nid: NID to read the AMP value
 191  * @direction: #HDA_INPUT or #HDA_OUTPUT
 192  * @idx: the index value (only for input direction)
 193  * @mask: bit mask to set
 194  * @val: the bits value to set
 195  *
 196  * Update the stereo AMP value with a bit mask.
 197  * The lower byte is left, the upper byte is right.
 198  * Returns 0 if the value is unchanged, 1 if changed, or a negative error.
 199  */
 200 static inline int
 201 snd_hdac_regmap_update_amp_stereo(struct hdac_device *codec, hda_nid_t nid,
 202                                   int dir, int idx, int mask, int val)
 203 {
 204         unsigned int cmd = snd_hdac_regmap_encode_amp_stereo(nid, dir, idx);
 205
 206         return snd_hdac_regmap_update_raw(codec, cmd, mask, val);
 207 }
 208
 209 /**
 210  * snd_hdac_regmap_sync_node - sync the widget node attributes
 211  * @codec: HD-audio codec
 212  * @nid: NID to sync
 213  */
 214 static inline void
 215 snd_hdac_regmap_sync_node(struct hdac_device *codec, hda_nid_t nid)
 216 {
 217         regcache_mark_dirty(codec->regmap);
 218         regcache_sync_region(codec->regmap, nid << 20, ((nid + 1) << 20) - 1);
 219 }
 220
 221 #endif /* __SOUND_HDA_REGMAP_H */