source: GPL/trunk/alsa-kernel/include/sound/hda_regmap.h

Last change on this file was 679, checked in by David Azarewicz, 5 years ago

Merge changes from Paul's uniaud32next branch.
File size: 7.0 KB
Line 
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * HD-audio regmap helpers
4 */
5
6#ifndef __SOUND_HDA_REGMAP_H
7#define __SOUND_HDA_REGMAP_H
8
9#include <linux/regmap.h>
10#include <sound/core.h>
11#include <sound/hdaudio.h>
12
13#define AC_AMP_FAKE_MUTE 0x10 /* fake mute bit set to amp verbs */
14
15int snd_hdac_regmap_init(struct hdac_device *codec);
16void snd_hdac_regmap_exit(struct hdac_device *codec);
17int snd_hdac_regmap_add_vendor_verb(struct hdac_device *codec,
18 unsigned int verb);
19int snd_hdac_regmap_read_raw(struct hdac_device *codec, unsigned int reg,
20 unsigned int *val);
21int snd_hdac_regmap_read_raw_uncached(struct hdac_device *codec,
22 unsigned int reg, unsigned int *val);
23int snd_hdac_regmap_write_raw(struct hdac_device *codec, unsigned int reg,
24 unsigned int val);
25int snd_hdac_regmap_update_raw(struct hdac_device *codec, unsigned int reg,
26 unsigned int mask, unsigned int val);
27int snd_hdac_regmap_update_raw_once(struct hdac_device *codec, unsigned int reg,
28 unsigned int mask, unsigned int val);
29void snd_hdac_regmap_sync(struct hdac_device *codec);
30
31/**
32 * snd_hdac_regmap_encode_verb - encode the verb to a pseudo register
33 * @nid: widget NID
34 * @verb: codec verb
35 *
36 * Returns an encoded pseudo register.
37 */
38#define snd_hdac_regmap_encode_verb(nid, verb) \
39 (((verb) << 8) | 0x80000 | ((unsigned int)(nid) << 20))
40
41/**
42 * snd_hdac_regmap_encode_amp - encode the AMP verb to a pseudo register
43 * @nid: widget NID
44 * @ch: channel (left = 0, right = 1)
45 * @dir: direction (#HDA_INPUT, #HDA_OUTPUT)
46 * @idx: input index value
47 *
48 * Returns an encoded pseudo register.
49 */
50#define snd_hdac_regmap_encode_amp(nid, ch, dir, idx) \
51 (snd_hdac_regmap_encode_verb(nid, AC_VERB_GET_AMP_GAIN_MUTE) | \
52 ((ch) ? AC_AMP_GET_RIGHT : AC_AMP_GET_LEFT) | \
53 ((dir) == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT) | \
54 (idx))
55
56/**
57 * snd_hdac_regmap_encode_amp_stereo - encode a pseudo register for stereo AMPs
58 * @nid: widget NID
59 * @dir: direction (#HDA_INPUT, #HDA_OUTPUT)
60 * @idx: input index value
61 *
62 * Returns an encoded pseudo register.
63 */
64#define snd_hdac_regmap_encode_amp_stereo(nid, dir, idx) \
65 (snd_hdac_regmap_encode_verb(nid, AC_VERB_GET_AMP_GAIN_MUTE) | \
66 AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT | /* both bits set! */ \
67 ((dir) == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT) | \
68 (idx))
69
70/**
71 * snd_hdac_regmap_write - Write a verb with caching
72 * @nid: codec NID
73 * @reg: verb to write
74 * @val: value to write
75 *
76 * For writing an amp value, use snd_hdac_regmap_update_amp().
77 */
78static inline int
79snd_hdac_regmap_write(struct hdac_device *codec, hda_nid_t nid,
80 unsigned int verb, unsigned int val)
81{
82 unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb);
83
84 return snd_hdac_regmap_write_raw(codec, cmd, val);
85}
86
87/**
88 * snd_hda_regmap_update - Update a verb value with caching
89 * @nid: codec NID
90 * @verb: verb to update
91 * @mask: bit mask to update
92 * @val: value to update
93 *
94 * For updating an amp value, use snd_hdac_regmap_update_amp().
95 */
96static inline int
97snd_hdac_regmap_update(struct hdac_device *codec, hda_nid_t nid,
98 unsigned int verb, unsigned int mask,
99 unsigned int val)
100{
101 unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb);
102
103 return snd_hdac_regmap_update_raw(codec, cmd, mask, val);
104}
105
106/**
107 * snd_hda_regmap_read - Read a verb with caching
108 * @nid: codec NID
109 * @verb: verb to read
110 * @val: pointer to store the value
111 *
112 * For reading an amp value, use snd_hda_regmap_get_amp().
113 */
114static inline int
115snd_hdac_regmap_read(struct hdac_device *codec, hda_nid_t nid,
116 unsigned int verb, unsigned int *val)
117{
118 unsigned int cmd = snd_hdac_regmap_encode_verb(nid, verb);
119
120 return snd_hdac_regmap_read_raw(codec, cmd, val);
121}
122
123/**
124 * snd_hdac_regmap_get_amp - Read 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 * @index: the index value (only for input direction)
130 * @val: the pointer to store the value
131 *
132 * Read AMP value. The volume is between 0 to 0x7f, 0x80 = mute bit.
133 * Returns the value or a negative error.
134 */
135static inline int
136snd_hdac_regmap_get_amp(struct hdac_device *codec, hda_nid_t nid,
137 int ch, int dir, int idx)
138{
139 unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx);
140 int err;
141 unsigned int val;
142
143 err = snd_hdac_regmap_read_raw(codec, cmd, &val);
144 return err < 0 ? err : val;
145}
146
147/**
148 * snd_hdac_regmap_update_amp - update the AMP value
149 * @codec: HD-audio codec
150 * @nid: NID to read the AMP value
151 * @ch: channel (left=0 or right=1)
152 * @direction: #HDA_INPUT or #HDA_OUTPUT
153 * @idx: the index value (only for input direction)
154 * @mask: bit mask to set
155 * @val: the bits value to set
156 *
157 * Update the AMP value with a bit mask.
158 * Returns 0 if the value is unchanged, 1 if changed, or a negative error.
159 */
160static inline int
161snd_hdac_regmap_update_amp(struct hdac_device *codec, hda_nid_t nid,
162 int ch, int dir, int idx, int mask, int val)
163{
164 unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx);
165
166 return snd_hdac_regmap_update_raw(codec, cmd, mask, val);
167}
168
169/**
170 * snd_hdac_regmap_get_amp_stereo - Read stereo AMP values
171 * @codec: HD-audio codec
172 * @nid: NID to read the AMP value
173 * @ch: channel (left=0 or right=1)
174 * @direction: #HDA_INPUT or #HDA_OUTPUT
175 * @index: the index value (only for input direction)
176 * @val: the pointer to store the value
177 *
178 * Read stereo AMP values. The lower byte is left, the upper byte is right.
179 * Returns the value or a negative error.
180 */
181static inline int
182snd_hdac_regmap_get_amp_stereo(struct hdac_device *codec, hda_nid_t nid,
183 int dir, int idx)
184{
185 unsigned int cmd = snd_hdac_regmap_encode_amp_stereo(nid, dir, idx);
186 int err;
187 unsigned int val;
188
189 err = snd_hdac_regmap_read_raw(codec, cmd, &val);
190 return err < 0 ? err : val;
191}
192
193/**
194 * snd_hdac_regmap_update_amp_stereo - update the stereo AMP value
195 * @codec: HD-audio codec
196 * @nid: NID to read the AMP value
197 * @direction: #HDA_INPUT or #HDA_OUTPUT
198 * @idx: the index value (only for input direction)
199 * @mask: bit mask to set
200 * @val: the bits value to set
201 *
202 * Update the stereo AMP value with a bit mask.
203 * The lower byte is left, the upper byte is right.
204 * Returns 0 if the value is unchanged, 1 if changed, or a negative error.
205 */
206static inline int
207snd_hdac_regmap_update_amp_stereo(struct hdac_device *codec, hda_nid_t nid,
208 int dir, int idx, int mask, int val)
209{
210 unsigned int cmd = snd_hdac_regmap_encode_amp_stereo(nid, dir, idx);
211
212 return snd_hdac_regmap_update_raw(codec, cmd, mask, val);
213}
214
215/**
216 * snd_hdac_regmap_sync_node - sync the widget node attributes
217 * @codec: HD-audio codec
218 * @nid: NID to sync
219 */
220static inline void
221snd_hdac_regmap_sync_node(struct hdac_device *codec, hda_nid_t nid)
222{
223 regcache_mark_dirty(codec->regmap);
224 regcache_sync_region(codec->regmap, nid << 20, ((nid + 1) << 20) - 1);
225}
226
227#endif /* __SOUND_HDA_REGMAP_H */
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