1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // soc-link.c
4 //
5 // Copyright (C) 2019 Renesas Electronics Corp.
6 // Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7 //
8 #include <sound/soc.h>
9 #include <sound/soc-link.h>
10
11 #define soc_link_ret(rtd, ret) _soc_link_ret(rtd, __func__, ret)
12 static inline int _soc_link_ret(struct snd_soc_pcm_runtime *rtd,
13 const char *func, int ret)
14 {
15 /* Positive, Zero values are not errors */
16 if (ret >= 0)
17 return ret;
18
19 /* Negative values might be errors */
20 switch (ret) {
21 case -EPROBE_DEFER:
22 case -ENOTSUPP:
23 break;
24 default:
25 dev_err(rtd->dev,
26 "ASoC: error at %s on %s: %d\n",
27 func, rtd->dai_link->name, ret);
28 }
29
30 return ret;
31 }
32
33 /*
34 * We might want to check substream by using list.
35 * In such case, we can update these macros.
36 */
37 #define soc_link_mark_push(rtd, substream, tgt) ((rtd)->mark_##tgt = substream)
38 #define soc_link_mark_pop(rtd, substream, tgt) ((rtd)->mark_##tgt = NULL)
39 #define soc_link_mark_match(rtd, substream, tgt) ((rtd)->mark_##tgt == substream)
40
41 int snd_soc_link_init(struct snd_soc_pcm_runtime *rtd)
42 {
43 int ret = 0;
44
45 if (rtd->dai_link->init)
46 ret = rtd->dai_link->init(rtd);
47
48 return soc_link_ret(rtd, ret);
49 }
50
51 void snd_soc_link_exit(struct snd_soc_pcm_runtime *rtd)
52 {
53 if (rtd->dai_link->exit)
54 rtd->dai_link->exit(rtd);
55 }
56
57 int snd_soc_link_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
58 struct snd_pcm_hw_params *params)
59 {
60 int ret = 0;
61
62 if (rtd->dai_link->be_hw_params_fixup)
63 ret = rtd->dai_link->be_hw_params_fixup(rtd, params);
64
65 return soc_link_ret(rtd, ret);
66 }
67
68 int snd_soc_link_startup(struct snd_pcm_substream *substream)
69 {
70 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
71 int ret = 0;
72
73 if (rtd->dai_link->ops &&
74 rtd->dai_link->ops->startup)
75 ret = rtd->dai_link->ops->startup(substream);
76
77 /* mark substream if succeeded */
78 if (ret == 0)
79 soc_link_mark_push(rtd, substream, startup);
80
81 return soc_link_ret(rtd, ret);
82 }
83
84 void snd_soc_link_shutdown(struct snd_pcm_substream *substream,
85 int rollback)
86 {
87 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
88
89 if (rollback && !soc_link_mark_match(rtd, substream, startup))
90 return;
91
92 if (rtd->dai_link->ops &&
93 rtd->dai_link->ops->shutdown)
94 rtd->dai_link->ops->shutdown(substream);
95
96 /* remove marked substream */
97 soc_link_mark_pop(rtd, substream, startup);
98 }
99
100 int snd_soc_link_prepare(struct snd_pcm_substream *substream)
101 {
102 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
103 int ret = 0;
104
105 if (rtd->dai_link->ops &&
106 rtd->dai_link->ops->prepare)
107 ret = rtd->dai_link->ops->prepare(substream);
108
109 return soc_link_ret(rtd, ret);
110 }
111
112 int snd_soc_link_hw_params(struct snd_pcm_substream *substream,
113 struct snd_pcm_hw_params *params)
114 {
115 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
116 int ret = 0;
117
118 if (rtd->dai_link->ops &&
119 rtd->dai_link->ops->hw_params)
120 ret = rtd->dai_link->ops->hw_params(substream, params);
121
122 /* mark substream if succeeded */
123 if (ret == 0)
124 soc_link_mark_push(rtd, substream, hw_params);
125
126 return soc_link_ret(rtd, ret);
127 }
128
129 void snd_soc_link_hw_free(struct snd_pcm_substream *substream, int rollback)
130 {
131 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
132
133 if (rollback && !soc_link_mark_match(rtd, substream, hw_params))
134 return;
135
136 if (rtd->dai_link->ops &&
137 rtd->dai_link->ops->hw_free)
138 rtd->dai_link->ops->hw_free(substream);
139
140 /* remove marked substream */
141 soc_link_mark_pop(rtd, substream, hw_params);
142 }
143
144 static int soc_link_trigger(struct snd_pcm_substream *substream, int cmd)
145 {
146 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
147 int ret = 0;
148
149 if (rtd->dai_link->ops &&
150 rtd->dai_link->ops->trigger)
151 ret = rtd->dai_link->ops->trigger(substream, cmd);
152
153 return soc_link_ret(rtd, ret);
154 }
155
156 int snd_soc_link_trigger(struct snd_pcm_substream *substream, int cmd,
157 int rollback)
158 {
159 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
160 int ret = 0;
161
162 switch (cmd) {
163 case SNDRV_PCM_TRIGGER_START:
164 case SNDRV_PCM_TRIGGER_RESUME:
165 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
166 ret = soc_link_trigger(substream, cmd);
167 if (ret < 0)
168 break;
169 soc_link_mark_push(rtd, substream, trigger);
170 break;
171 case SNDRV_PCM_TRIGGER_STOP:
172 case SNDRV_PCM_TRIGGER_SUSPEND:
173 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
174 if (rollback && !soc_link_mark_match(rtd, substream, trigger))
175 break;
176
177 ret = soc_link_trigger(substream, cmd);
178 soc_link_mark_pop(rtd, substream, startup);
179 }
180
181 return ret;
182 }
183
184 int snd_soc_link_compr_startup(struct snd_compr_stream *cstream)
185 {
186 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
187 int ret = 0;
188
189 if (rtd->dai_link->compr_ops &&
190 rtd->dai_link->compr_ops->startup)
191 ret = rtd->dai_link->compr_ops->startup(cstream);
192
193 if (ret == 0)
194 soc_link_mark_push(rtd, cstream, compr_startup);
195
196 return soc_link_ret(rtd, ret);
197 }
198 EXPORT_SYMBOL_GPL(snd_soc_link_compr_startup);
199
200 void snd_soc_link_compr_shutdown(struct snd_compr_stream *cstream,
201 int rollback)
202 {
203 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
204
205 if (rollback && !soc_link_mark_match(rtd, cstream, compr_startup))
206 return;
207
208 if (rtd->dai_link->compr_ops &&
209 rtd->dai_link->compr_ops->shutdown)
210 rtd->dai_link->compr_ops->shutdown(cstream);
211
212 soc_link_mark_pop(rtd, cstream, compr_startup);
213 }
214 EXPORT_SYMBOL_GPL(snd_soc_link_compr_shutdown);
215
216 int snd_soc_link_compr_set_params(struct snd_compr_stream *cstream)
217 {
218 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
219 int ret = 0;
220
221 if (rtd->dai_link->compr_ops &&
222 rtd->dai_link->compr_ops->set_params)
223 ret = rtd->dai_link->compr_ops->set_params(cstream);
224
225 return soc_link_ret(rtd, ret);
226 }
227 EXPORT_SYMBOL_GPL(snd_soc_link_compr_set_params);
228
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