projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 4d75faa0 TI |
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 | ||
| 15 | int snd_hdac_regmap_read_raw(struct hdac_device *codec, unsigned int reg, | |
| 16 | unsigned int *val); | |
| 17 | int snd_hdac_regmap_write_raw(struct hdac_device *codec, unsigned int reg, | |
| 18 | unsigned int val); | |
| 19 | int snd_hdac_regmap_update_raw(struct hdac_device *codec, unsigned int reg, | |
| 20 | unsigned int mask, unsigned int val); | |
| 21 | ||
| 22 | /** | |
| 23 | * snd_hdac_regmap_encode_verb - encode the verb to a pseudo register | |
| 24 | * @nid: widget NID | |
| 25 | * @verb: codec verb | |
| 26 | * | |
| 27 | * Returns an encoded pseudo register. | |
| 28 | */ | |
| 29 | #define snd_hdac_regmap_encode_verb(nid, verb) \ | |
| 30 | (((verb) << 8) | 0x80000 | ((unsigned int)(nid) << 20)) | |
| 31 | ||
| 32 | /** | |
| 33 | * snd_hdac_regmap_encode_amp - encode the AMP verb to a pseudo register | |
| 34 | * @nid: widget NID | |
| 35 | * @ch: channel (left = 0, right = 1) | |
| 36 | * @dir: direction (#HDA_INPUT, #HDA_OUTPUT) | |
| 37 | * @idx: input index value | |
| 38 | * | |
| 39 | * Returns an encoded pseudo register. | |
| 40 | */ | |
| 41 | #define snd_hdac_regmap_encode_amp(nid, ch, dir, idx) \ | |
| 42 | (snd_hdac_regmap_encode_verb(nid, AC_VERB_GET_AMP_GAIN_MUTE) | \ | |
| 43 | ((ch) ? AC_AMP_GET_RIGHT : AC_AMP_GET_LEFT) | \ | |
| 44 | ((dir) == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT) | \ | |
| 45 | (idx)) | |
| 46 | ||
| 47 | /** | |
| 48 | * snd_hdac_regmap_write - Write a verb with caching | |
| 49 | * @nid: codec NID | |
| 50 | * @reg: verb to write | |
| 51 | * @val: value to write | |
| 52 | * | |
| 53 | * For writing an amp value, use snd_hda_regmap_amp_update(). | |
| 54 | */ | |
| 55 | static inline int | |
| 56 | snd_hdac_regmap_write(struct hdac_device *codec, hda_nid_t nid, | |
| 57 | unsigned int verb, unsigned int val) | |
| 58 | { | |
| 59 | unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb); | |
| 60 | ||
| 61 | return snd_hdac_regmap_write_raw(codec, cmd, val); | |
| 62 | } | |
| 63 | ||
| 64 | /** | |
| 65 | * snd_hda_regmap_update - Update a verb value with caching | |
| 66 | * @nid: codec NID | |
| 67 | * @verb: verb to update | |
| 68 | * @mask: bit mask to update | |
| 69 | * @val: value to update | |
| 70 | * | |
| 71 | * For updating an amp value, use snd_hda_regmap_amp_update(). | |
| 72 | */ | |
| 73 | static inline int | |
| 74 | snd_hdac_regmap_update(struct hdac_device *codec, hda_nid_t nid, | |
| 75 | unsigned int verb, unsigned int mask, | |
| 76 | unsigned int val) | |
| 77 | { | |
| 78 | unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb); | |
| 79 | ||
| 80 | return snd_hdac_regmap_update_raw(codec, cmd, mask, val); | |
| 81 | } | |
| 82 | ||
| 83 | /** | |
| 84 | * snd_hda_regmap_read - Read a verb with caching | |
| 85 | * @nid: codec NID | |
| 86 | * @verb: verb to read | |
| 87 | * @val: pointer to store the value | |
| 88 | * | |
| 89 | * For reading an amp value, use snd_hda_regmap_get_amp(). | |
| 90 | */ | |
| 91 | static inline int | |
| 92 | snd_hdac_regmap_read(struct hdac_device *codec, hda_nid_t nid, | |
| 93 | unsigned int verb, unsigned int *val) | |
| 94 | { | |
| 95 | unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb); | |
| 96 | ||
| 97 | return snd_hdac_regmap_read_raw(codec, cmd, val); | |
| 98 | } | |
| 99 | ||
| 100 | /** | |
| 101 | * snd_hdac_regmap_get_amp - Read AMP value | |
| 102 | * @codec: HD-audio codec | |
| 103 | * @nid: NID to read the AMP value | |
| 104 | * @ch: channel (left=0 or right=1) | |
| 105 | * @direction: #HDA_INPUT or #HDA_OUTPUT | |
| 106 | * @index: the index value (only for input direction) | |
| 107 | * @val: the pointer to store the value | |
| 108 | * | |
| 109 | * Read AMP value. The volume is between 0 to 0x7f, 0x80 = mute bit. | |
| 110 | * Returns the value or a negative error. | |
| 111 | */ | |
| 112 | static inline int | |
| 113 | snd_hdac_regmap_get_amp(struct hdac_device *codec, hda_nid_t nid, | |
| 114 | int ch, int dir, int idx) | |
| 115 | { | |
| 116 | unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx); | |
| 117 | int err, val; | |
| 118 | ||
| 119 | err = snd_hdac_regmap_read_raw(codec, cmd, &val); | |
| 120 | return err < 0 ? err : val; | |
| 121 | } | |
| 122 | ||
| 123 | /** | |
| 124 | * snd_hdac_regmap_update_amp - update the AMP value | |
| 125 | * @codec: HD-audio codec | |
| 126 | * @nid: NID to read the AMP value | |
| 127 | * @ch: channel (left=0 or right=1) | |
| 128 | * @direction: #HDA_INPUT or #HDA_OUTPUT | |
| 129 | * @idx: the index value (only for input direction) | |
| 130 | * @mask: bit mask to set | |
| 131 | * @val: the bits value to set | |
| 132 | * | |
| 133 | * Update the AMP value with a bit mask. | |
| 134 | * Returns 0 if the value is unchanged, 1 if changed, or a negative error. | |
| 135 | */ | |
| 136 | static inline int | |
| 137 | snd_hdac_regmap_update_amp(struct hdac_device *codec, hda_nid_t nid, | |
| 138 | int ch, int dir, int idx, int mask, int val) | |
| 139 | { | |
| 140 | unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx); | |
| 141 | ||
| 142 | return snd_hdac_regmap_update_raw(codec, cmd, mask, val); | |
| 143 | } | |
| 144 | ||
| 145 | #endif /* __SOUND_HDA_REGMAP_H */ |