fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / sound / soc-dapm.h
blob2b1ae8edc43cfc5215831679dbb88aafd5ccfc6c
1 /*
2 * linux/sound/soc-dapm.h -- ALSA SoC Dynamic Audio Power Management
4 * Author: Liam Girdwood
5 * Created: Aug 11th 2005
6 * Copyright: Wolfson Microelectronics. PLC.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #ifndef __LINUX_SND_SOC_DAPM_H
14 #define __LINUX_SND_SOC_DAPM_H
16 #include <linux/device.h>
17 #include <linux/types.h>
18 #include <sound/control.h>
19 #include <sound/soc.h>
21 /* widget has no PM register bit */
22 #define SND_SOC_NOPM -1
25 * SoC dynamic audio power managment
27 * We can have upto 4 power domains
28 * 1. Codec domain - VREF, VMID
29 * Usually controlled at codec probe/remove, although can be set
30 * at stream time if power is not needed for sidetone, etc.
31 * 2. Platform/Machine domain - physically connected inputs and outputs
32 * Is platform/machine and user action specific, is set in the machine
33 * driver and by userspace e.g when HP are inserted
34 * 3. Path domain - Internal codec path mixers
35 * Are automatically set when mixer and mux settings are
36 * changed by the user.
37 * 4. Stream domain - DAC's and ADC's.
38 * Enabled when stream playback/capture is started.
41 /* codec domain */
42 #define SND_SOC_DAPM_VMID(wname) \
43 { .id = snd_soc_dapm_vmid, .name = wname, .kcontrols = NULL, \
44 .num_kcontrols = 0}
46 /* platform domain */
47 #define SND_SOC_DAPM_INPUT(wname) \
48 { .id = snd_soc_dapm_input, .name = wname, .kcontrols = NULL, \
49 .num_kcontrols = 0}
50 #define SND_SOC_DAPM_OUTPUT(wname) \
51 { .id = snd_soc_dapm_output, .name = wname, .kcontrols = NULL, \
52 .num_kcontrols = 0}
53 #define SND_SOC_DAPM_MIC(wname, wevent) \
54 { .id = snd_soc_dapm_mic, .name = wname, .kcontrols = NULL, \
55 .num_kcontrols = 0, .event = wevent, \
56 .event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD}
57 #define SND_SOC_DAPM_HP(wname, wevent) \
58 { .id = snd_soc_dapm_hp, .name = wname, .kcontrols = NULL, \
59 .num_kcontrols = 0, .event = wevent, \
60 .event_flags = SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD}
61 #define SND_SOC_DAPM_SPK(wname, wevent) \
62 { .id = snd_soc_dapm_spk, .name = wname, .kcontrols = NULL, \
63 .num_kcontrols = 0, .event = wevent, \
64 .event_flags = SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD}
65 #define SND_SOC_DAPM_LINE(wname, wevent) \
66 { .id = snd_soc_dapm_line, .name = wname, .kcontrols = NULL, \
67 .num_kcontrols = 0, .event = wevent, \
68 .event_flags = SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD}
70 /* path domain */
71 #define SND_SOC_DAPM_PGA(wname, wreg, wshift, winvert,\
72 wcontrols, wncontrols) \
73 { .id = snd_soc_dapm_pga, .name = wname, .reg = wreg, .shift = wshift, \
74 .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = wncontrols}
75 #define SND_SOC_DAPM_MIXER(wname, wreg, wshift, winvert, \
76 wcontrols, wncontrols)\
77 { .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
78 .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = wncontrols}
79 #define SND_SOC_DAPM_MICBIAS(wname, wreg, wshift, winvert) \
80 { .id = snd_soc_dapm_micbias, .name = wname, .reg = wreg, .shift = wshift, \
81 .invert = winvert, .kcontrols = NULL, .num_kcontrols = 0}
82 #define SND_SOC_DAPM_SWITCH(wname, wreg, wshift, winvert, wcontrols) \
83 { .id = snd_soc_dapm_switch, .name = wname, .reg = wreg, .shift = wshift, \
84 .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = 1}
85 #define SND_SOC_DAPM_MUX(wname, wreg, wshift, winvert, wcontrols) \
86 { .id = snd_soc_dapm_mux, .name = wname, .reg = wreg, .shift = wshift, \
87 .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = 1}
89 /* path domain with event - event handler must return 0 for success */
90 #define SND_SOC_DAPM_PGA_E(wname, wreg, wshift, winvert, wcontrols, \
91 wncontrols, wevent, wflags) \
92 { .id = snd_soc_dapm_pga, .name = wname, .reg = wreg, .shift = wshift, \
93 .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = wncontrols, \
94 .event = wevent, .event_flags = wflags}
95 #define SND_SOC_DAPM_MIXER_E(wname, wreg, wshift, winvert, wcontrols, \
96 wncontrols, wevent, wflags) \
97 { .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
98 .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = wncontrols, \
99 .event = wevent, .event_flags = wflags}
100 #define SND_SOC_DAPM_MICBIAS_E(wname, wreg, wshift, winvert, wevent, wflags) \
101 { .id = snd_soc_dapm_micbias, .name = wname, .reg = wreg, .shift = wshift, \
102 .invert = winvert, .kcontrols = NULL, .num_kcontrols = 0, \
103 .event = wevent, .event_flags = wflags}
104 #define SND_SOC_DAPM_SWITCH_E(wname, wreg, wshift, winvert, wcontrols, \
105 wevent, wflags) \
106 { .id = snd_soc_dapm_switch, .name = wname, .reg = wreg, .shift = wshift, \
107 .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = 1 \
108 .event = wevent, .event_flags = wflags}
109 #define SND_SOC_DAPM_MUX_E(wname, wreg, wshift, winvert, wcontrols, \
110 wevent, wflags) \
111 { .id = snd_soc_dapm_mux, .name = wname, .reg = wreg, .shift = wshift, \
112 .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = 1, \
113 .event = wevent, .event_flags = wflags}
115 /* events that are pre and post DAPM */
116 #define SND_SOC_DAPM_PRE(wname, wevent) \
117 { .id = snd_soc_dapm_pre, .name = wname, .kcontrols = NULL, \
118 .num_kcontrols = 0, .event = wevent, \
119 .event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD}
120 #define SND_SOC_DAPM_POST(wname, wevent) \
121 { .id = snd_soc_dapm_post, .name = wname, .kcontrols = NULL, \
122 .num_kcontrols = 0, .event = wevent, \
123 .event_flags = SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD}
125 /* stream domain */
126 #define SND_SOC_DAPM_DAC(wname, stname, wreg, wshift, winvert) \
127 { .id = snd_soc_dapm_dac, .name = wname, .sname = stname, .reg = wreg, \
128 .shift = wshift, .invert = winvert}
129 #define SND_SOC_DAPM_ADC(wname, stname, wreg, wshift, winvert) \
130 { .id = snd_soc_dapm_adc, .name = wname, .sname = stname, .reg = wreg, \
131 .shift = wshift, .invert = winvert}
133 /* dapm kcontrol types */
134 #define SOC_DAPM_SINGLE(xname, reg, shift, mask, invert) \
135 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
136 .info = snd_soc_info_volsw, \
137 .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
138 .private_value = SOC_SINGLE_VALUE(reg, shift, mask, invert) }
139 #define SOC_DAPM_DOUBLE(xname, reg, shift_left, shift_right, mask, invert, \
140 power) \
141 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
142 .info = snd_soc_info_volsw, \
143 .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
144 .private_value = (reg) | ((shift_left) << 8) | ((shift_right) << 12) |\
145 ((mask) << 16) | ((invert) << 24) }
146 #define SOC_DAPM_ENUM(xname, xenum) \
147 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
148 .info = snd_soc_info_enum_double, \
149 .get = snd_soc_dapm_get_enum_double, \
150 .put = snd_soc_dapm_put_enum_double, \
151 .private_value = (unsigned long)&xenum }
153 /* dapm stream operations */
154 #define SND_SOC_DAPM_STREAM_NOP 0x0
155 #define SND_SOC_DAPM_STREAM_START 0x1
156 #define SND_SOC_DAPM_STREAM_STOP 0x2
157 #define SND_SOC_DAPM_STREAM_SUSPEND 0x4
158 #define SND_SOC_DAPM_STREAM_RESUME 0x8
159 #define SND_SOC_DAPM_STREAM_PAUSE_PUSH 0x10
160 #define SND_SOC_DAPM_STREAM_PAUSE_RELEASE 0x20
162 /* dapm event types */
163 #define SND_SOC_DAPM_PRE_PMU 0x1 /* before widget power up */
164 #define SND_SOC_DAPM_POST_PMU 0x2 /* after widget power up */
165 #define SND_SOC_DAPM_PRE_PMD 0x4 /* before widget power down */
166 #define SND_SOC_DAPM_POST_PMD 0x8 /* after widget power down */
167 #define SND_SOC_DAPM_PRE_REG 0x10 /* before audio path setup */
168 #define SND_SOC_DAPM_POST_REG 0x20 /* after audio path setup */
170 /* convenience event type detection */
171 #define SND_SOC_DAPM_EVENT_ON(e) \
172 (e & (SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU))
173 #define SND_SOC_DAPM_EVENT_OFF(e) \
174 (e & (SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD))
176 struct snd_soc_dapm_widget;
177 enum snd_soc_dapm_type;
178 struct snd_soc_dapm_path;
179 struct snd_soc_dapm_pin;
181 /* dapm controls */
182 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
183 struct snd_ctl_elem_value *ucontrol);
184 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
185 struct snd_ctl_elem_value *ucontrol);
186 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
187 struct snd_ctl_elem_value *ucontrol);
188 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
189 struct snd_ctl_elem_value *ucontrol);
190 int snd_soc_dapm_new_control(struct snd_soc_codec *codec,
191 const struct snd_soc_dapm_widget *widget);
193 /* dapm path setup */
194 int snd_soc_dapm_connect_input(struct snd_soc_codec *codec,
195 const char *sink_name, const char *control_name, const char *src_name);
196 int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec);
197 void snd_soc_dapm_free(struct snd_soc_device *socdev);
199 /* dapm events */
200 int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, char *stream,
201 int event);
203 /* dapm sys fs - used by the core */
204 int snd_soc_dapm_sys_add(struct device *dev);
206 /* dapm audio endpoint control */
207 int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec,
208 char *pin, int status);
209 int snd_soc_dapm_sync_endpoints(struct snd_soc_codec *codec);
211 /* dapm widget types */
212 enum snd_soc_dapm_type {
213 snd_soc_dapm_input = 0, /* input pin */
214 snd_soc_dapm_output, /* output pin */
215 snd_soc_dapm_mux, /* selects 1 analog signal from many inputs */
216 snd_soc_dapm_mixer, /* mixes several analog signals together */
217 snd_soc_dapm_pga, /* programmable gain/attenuation (volume) */
218 snd_soc_dapm_adc, /* analog to digital converter */
219 snd_soc_dapm_dac, /* digital to analog converter */
220 snd_soc_dapm_micbias, /* microphone bias (power) */
221 snd_soc_dapm_mic, /* microphone */
222 snd_soc_dapm_hp, /* headphones */
223 snd_soc_dapm_spk, /* speaker */
224 snd_soc_dapm_line, /* line input/output */
225 snd_soc_dapm_switch, /* analog switch */
226 snd_soc_dapm_vmid, /* codec bias/vmid - to minimise pops */
227 snd_soc_dapm_pre, /* machine specific pre widget - exec first */
228 snd_soc_dapm_post, /* machine specific post widget - exec last */
231 /* dapm audio path between two widgets */
232 struct snd_soc_dapm_path {
233 char *name;
234 char *long_name;
236 /* source (input) and sink (output) widgets */
237 struct snd_soc_dapm_widget *source;
238 struct snd_soc_dapm_widget *sink;
239 struct snd_kcontrol *kcontrol;
241 /* status */
242 u32 connect:1; /* source and sink widgets are connected */
243 u32 walked:1; /* path has been walked */
245 struct list_head list_source;
246 struct list_head list_sink;
247 struct list_head list;
250 /* dapm widget */
251 struct snd_soc_dapm_widget {
252 enum snd_soc_dapm_type id;
253 char *name; /* widget name */
254 char *sname; /* stream name */
255 struct snd_soc_codec *codec;
256 struct list_head list;
258 /* dapm control */
259 short reg; /* negative reg = no direct dapm */
260 unsigned char shift; /* bits to shift */
261 unsigned int saved_value; /* widget saved value */
262 unsigned int value; /* widget current value */
263 unsigned char power:1; /* block power status */
264 unsigned char invert:1; /* invert the power bit */
265 unsigned char active:1; /* active stream on DAC, ADC's */
266 unsigned char connected:1; /* connected codec pin */
267 unsigned char new:1; /* cnew complete */
268 unsigned char ext:1; /* has external widgets */
269 unsigned char muted:1; /* muted for pop reduction */
270 unsigned char suspend:1; /* was active before suspend */
271 unsigned char pmdown:1; /* waiting for timeout */
273 /* external events */
274 unsigned short event_flags; /* flags to specify event types */
275 int (*event)(struct snd_soc_dapm_widget*, int);
277 /* kcontrols that relate to this widget */
278 int num_kcontrols;
279 const struct snd_kcontrol_new *kcontrols;
281 /* widget input and outputs */
282 struct list_head sources;
283 struct list_head sinks;
286 #endif