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