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 */ 222