| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * HD-audio regmap helpers |
| */ |
| |
| #ifndef __SOUND_HDA_REGMAP_H |
| #define __SOUND_HDA_REGMAP_H |
| |
| #include <linux/regmap.h> |
| #include <sound/core.h> |
| #include <sound/hdaudio.h> |
| |
| #define AC_AMP_FAKE_MUTE 0x10 /* fake mute bit set to amp verbs */ |
| |
| int snd_hdac_regmap_init(struct hdac_device *codec); |
| void snd_hdac_regmap_exit(struct hdac_device *codec); |
| int snd_hdac_regmap_add_vendor_verb(struct hdac_device *codec, |
| unsigned int verb); |
| int snd_hdac_regmap_read_raw(struct hdac_device *codec, unsigned int reg, |
| unsigned int *val); |
| int snd_hdac_regmap_read_raw_uncached(struct hdac_device *codec, |
| unsigned int reg, unsigned int *val); |
| int snd_hdac_regmap_write_raw(struct hdac_device *codec, unsigned int reg, |
| unsigned int val); |
| int snd_hdac_regmap_update_raw(struct hdac_device *codec, unsigned int reg, |
| unsigned int mask, unsigned int val); |
| int snd_hdac_regmap_update_raw_once(struct hdac_device *codec, unsigned int reg, |
| unsigned int mask, unsigned int val); |
| void snd_hdac_regmap_sync(struct hdac_device *codec); |
| |
| /** |
| * snd_hdac_regmap_encode_verb - encode the verb to a pseudo register |
| * @nid: widget NID |
| * @verb: codec verb |
| * |
| * Returns an encoded pseudo register. |
| */ |
| #define snd_hdac_regmap_encode_verb(nid, verb) \ |
| (((verb) << 8) | 0x80000 | ((unsigned int)(nid) << 20)) |
| |
| /** |
| * snd_hdac_regmap_encode_amp - encode the AMP verb to a pseudo register |
| * @nid: widget NID |
| * @ch: channel (left = 0, right = 1) |
| * @dir: direction (#HDA_INPUT, #HDA_OUTPUT) |
| * @idx: input index value |
| * |
| * Returns an encoded pseudo register. |
| */ |
| #define snd_hdac_regmap_encode_amp(nid, ch, dir, idx) \ |
| (snd_hdac_regmap_encode_verb(nid, AC_VERB_GET_AMP_GAIN_MUTE) | \ |
| ((ch) ? AC_AMP_GET_RIGHT : AC_AMP_GET_LEFT) | \ |
| ((dir) == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT) | \ |
| (idx)) |
| |
| /** |
| * snd_hdac_regmap_encode_amp_stereo - encode a pseudo register for stereo AMPs |
| * @nid: widget NID |
| * @dir: direction (#HDA_INPUT, #HDA_OUTPUT) |
| * @idx: input index value |
| * |
| * Returns an encoded pseudo register. |
| */ |
| #define snd_hdac_regmap_encode_amp_stereo(nid, dir, idx) \ |
| (snd_hdac_regmap_encode_verb(nid, AC_VERB_GET_AMP_GAIN_MUTE) | \ |
| AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT | /* both bits set! */ \ |
| ((dir) == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT) | \ |
| (idx)) |
| |
| /** |
| * snd_hdac_regmap_write - Write a verb with caching |
| * @nid: codec NID |
| * @reg: verb to write |
| * @val: value to write |
| * |
| * For writing an amp value, use snd_hdac_regmap_update_amp(). |
| */ |
| static inline int |
| snd_hdac_regmap_write(struct hdac_device *codec, hda_nid_t nid, |
| unsigned int verb, unsigned int val) |
| { |
| unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb); |
| |
| return snd_hdac_regmap_write_raw(codec, cmd, val); |
| } |
| |
| /** |
| * snd_hda_regmap_update - Update a verb value with caching |
| * @nid: codec NID |
| * @verb: verb to update |
| * @mask: bit mask to update |
| * @val: value to update |
| * |
| * For updating an amp value, use snd_hdac_regmap_update_amp(). |
| */ |
| static inline int |
| snd_hdac_regmap_update(struct hdac_device *codec, hda_nid_t nid, |
| unsigned int verb, unsigned int mask, |
| unsigned int val) |
| { |
| unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb); |
| |
| return snd_hdac_regmap_update_raw(codec, cmd, mask, val); |
| } |
| |
| /** |
| * snd_hda_regmap_read - Read a verb with caching |
| * @nid: codec NID |
| * @verb: verb to read |
| * @val: pointer to store the value |
| * |
| * For reading an amp value, use snd_hda_regmap_get_amp(). |
| */ |
| static inline int |
| snd_hdac_regmap_read(struct hdac_device *codec, hda_nid_t nid, |
| unsigned int verb, unsigned int *val) |
| { |
| unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb); |
| |
| return snd_hdac_regmap_read_raw(codec, cmd, val); |
| } |
| |
| /** |
| * snd_hdac_regmap_get_amp - Read AMP value |
| * @codec: HD-audio codec |
| * @nid: NID to read the AMP value |
| * @ch: channel (left=0 or right=1) |
| * @direction: #HDA_INPUT or #HDA_OUTPUT |
| * @index: the index value (only for input direction) |
| * @val: the pointer to store the value |
| * |
| * Read AMP value. The volume is between 0 to 0x7f, 0x80 = mute bit. |
| * Returns the value or a negative error. |
| */ |
| static inline int |
| snd_hdac_regmap_get_amp(struct hdac_device *codec, hda_nid_t nid, |
| int ch, int dir, int idx) |
| { |
| unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx); |
| int err, val; |
| |
| err = snd_hdac_regmap_read_raw(codec, cmd, &val); |
| return err < 0 ? err : val; |
| } |
| |
| /** |
| * snd_hdac_regmap_update_amp - update the AMP value |
| * @codec: HD-audio codec |
| * @nid: NID to read the AMP value |
| * @ch: channel (left=0 or right=1) |
| * @direction: #HDA_INPUT or #HDA_OUTPUT |
| * @idx: the index value (only for input direction) |
| * @mask: bit mask to set |
| * @val: the bits value to set |
| * |
| * Update the AMP value with a bit mask. |
| * Returns 0 if the value is unchanged, 1 if changed, or a negative error. |
| */ |
| static inline int |
| snd_hdac_regmap_update_amp(struct hdac_device *codec, hda_nid_t nid, |
| int ch, int dir, int idx, int mask, int val) |
| { |
| unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx); |
| |
| return snd_hdac_regmap_update_raw(codec, cmd, mask, val); |
| } |
| |
| /** |
| * snd_hdac_regmap_get_amp_stereo - Read stereo AMP values |
| * @codec: HD-audio codec |
| * @nid: NID to read the AMP value |
| * @ch: channel (left=0 or right=1) |
| * @direction: #HDA_INPUT or #HDA_OUTPUT |
| * @index: the index value (only for input direction) |
| * @val: the pointer to store the value |
| * |
| * Read stereo AMP values. The lower byte is left, the upper byte is right. |
| * Returns the value or a negative error. |
| */ |
| static inline int |
| snd_hdac_regmap_get_amp_stereo(struct hdac_device *codec, hda_nid_t nid, |
| int dir, int idx) |
| { |
| unsigned int cmd = snd_hdac_regmap_encode_amp_stereo(nid, dir, idx); |
| int err, val; |
| |
| err = snd_hdac_regmap_read_raw(codec, cmd, &val); |
| return err < 0 ? err : val; |
| } |
| |
| /** |
| * snd_hdac_regmap_update_amp_stereo - update the stereo AMP value |
| * @codec: HD-audio codec |
| * @nid: NID to read the AMP value |
| * @direction: #HDA_INPUT or #HDA_OUTPUT |
| * @idx: the index value (only for input direction) |
| * @mask: bit mask to set |
| * @val: the bits value to set |
| * |
| * Update the stereo AMP value with a bit mask. |
| * The lower byte is left, the upper byte is right. |
| * Returns 0 if the value is unchanged, 1 if changed, or a negative error. |
| */ |
| static inline int |
| snd_hdac_regmap_update_amp_stereo(struct hdac_device *codec, hda_nid_t nid, |
| int dir, int idx, int mask, int val) |
| { |
| unsigned int cmd = snd_hdac_regmap_encode_amp_stereo(nid, dir, idx); |
| |
| return snd_hdac_regmap_update_raw(codec, cmd, mask, val); |
| } |
| |
| /** |
| * snd_hdac_regmap_sync_node - sync the widget node attributes |
| * @codec: HD-audio codec |
| * @nid: NID to sync |
| */ |
| static inline void |
| snd_hdac_regmap_sync_node(struct hdac_device *codec, hda_nid_t nid) |
| { |
| regcache_mark_dirty(codec->regmap); |
| regcache_sync_region(codec->regmap, nid << 20, ((nid + 1) << 20) - 1); |
| } |
| |
| #endif /* __SOUND_HDA_REGMAP_H */ |