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