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