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4 * it under the terms of the GNU Lesser General Public License as
5 * published by the Free Software Foundation; either version 2.1 of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU Lesser General Public License for more details.
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14 * License along with this library; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 * Copyright (C) 2015 Intel Corporation
21 #ifndef __ALSA_TOPOLOGY_H
22 #define __ALSA_TOPOLOGY_H
29 * \defgroup topology Topology Interface
33 /*! \page topology ALSA Topology Interface
35 * The topology interface allows developers to define DSP topologies in a text
36 * file format and to convert the text topology to a binary topology
37 * representation that can be understood by the kernel. The topology core
38 * currently recognises the following object types :-
40 * * Controls (mixer, enumerated and byte) including TLV data.
41 * * PCMs (FE and BE configurations and capabilities)
43 * * DAPM graph elements.
44 * * Private data for each object type.
45 * * Manifest (containing count of each object type)
47 * <h3>Topology File Format</h3>
49 * The topology text format uses the standard ALSA configuration file format to
50 * describe each topology object type. This allows topology objects to include
51 * other topology objects as part of their definition. i.e. a TLV data object
52 * can be shared amongst many control objects that use the same TLV data.
56 * Topology audio controls can belong to three different types :-
58 * * Enumerated control
61 * Each control type can contain TLV data, private data, operations and also
62 * belong to widget objects.<br>
64 * <h5>Control Operations</h5>
65 * Driver Kcontrol callback info(), get() and put() operations are mapped with
66 * the CTL ops section in topology configuration files. The ctl ops section can
67 * assign operations using the standard names (listed below) for the standard
68 * kcontrol types or use ID numbers (>256) to map to bespoke driver controls.<br>
80 * This mapping shows info() using the standard "volsw" info callback whilst
81 * the get() and put() are mapped to bespoke driver callbacks. <br>
83 * The Standard operations names for control get(), put() and info calls
94 * <h5>Control TLV Data</h5>
95 * Controls can also use TLV data to represent dB information. This can be done
96 * by defining a TLV section and using the TLV section within the control.
97 * The TLV data for DBScale types are defined as follows :-
107 * Where the meanings and values for min, step and mute are exactly the same
108 * as defined in driver code.
110 * <h5>Control Channel Mapping</h5>
111 * Controls can also specify which channels they are mapped with. This is useful
112 * for userspace as it allows applications to determine the correct control
113 * channel for Left and Right etc. Channel maps are defined as follows :-
122 * The channel map reg is the register offset for the control, shift is the
123 * bit shift within the register for the channel and the section name is the
124 * channel name and can be one of the following :-
127 * * mono # mono stream
132 * * fc # front center
137 * * flc # front left center
138 * * frc # front right center
139 * * rlc # rear left center
140 * * rrc # rear right center
141 * * flw # front left wide
142 * * frw # front right wide
143 * * flh # front left high
144 * * fch # front center high
145 * * frh # front right high
147 * * tfl # top front left
148 * * tfr # top front right
149 * * tfc # top front center
150 * * trl # top rear left
151 * * trr # top rear right
152 * * trc # top rear center
153 * * tflc # top front left center
154 * * tfrc # top front right center
155 * * tsl # top side left
156 * * tsr # top side right
159 * * bc # bottom center
160 * * blc # bottom left center
161 * * brc # bottom right center
164 * <h5>Control Private Data</h5>
165 * Controls can also have private data. This can be done by defining a private
166 * data section and including the section within the control. The private data
167 * section is defined as follows :-
170 * SectionData."pdata for EQU1" {
171 * file "/path/to/file"
172 * bytes "0x12,0x34,0x56,0x78"
173 * shorts "0x1122,0x3344,0x5566,0x7788"
174 * words "0xaabbccdd,0x11223344,0x66aa77bb,0xefef1234"
177 * The file, bytes, shorts and words keywords are all mutually exclusive as
178 * the private data should only be taken from one source. The private data can
179 * either be read from a separate file or defined in the topology file using
180 * the bytes, shorts or words keywords.
182 * <h5>Mixer Controls</h5>
183 * A mixer control is defined as a new section that can include channel mapping,
184 * TLV data, callback operations and private data. The mixer section also
185 * includes a few other config options that are shown here :-
188 * SectionControlMixer."mixer name" {
189 * comment "optional comments"
191 * index "1" # Index number
193 * channel."name" { # Channel maps
197 * ops."ctl" { # Ops callback functions
201 * max "32" # Max control value
202 * invert "0" # Whether control values are inverted
204 * tlv "tld_data" # optional TLV data
206 * data "pdata for mixer1" # optional private data
210 * The section name is used to define the mixer name. The index number can be
211 * used to identify topology objects groups. This allows driver operations on
212 * objects with index number N and can be used to add/remove pipelines of
213 * objects whilst other objects are unaffected.
215 * <h5>Byte Controls</h5>
216 * A byte control is defined as a new section that can include channel mapping,
217 * TLV data, callback operations and private data. The bytes section also
218 * includes a few other config options that are shown here :-
221 * SectionControlBytes."name" {
222 * comment "optional comments"
224 * index "1" # Index number
226 * channel."name" { # Channel maps
230 * ops."ctl" { # Ops callback functions
234 * base "0" # Register base
235 * num_regs "16" # Number of registers
237 * max "255" # Maximum value
239 * tlv "tld_data" # optional TLV data
241 * data "pdata for mixer1" # optional private data
245 * <h5>Enumerated Controls</h5>
246 * A enumerated control is defined as a new section (like mixer and byte) that
247 * can include channel mapping, callback operations, private data and
248 * text strings to represent the enumerated control options.<br>
250 * The text strings for the enumerated controls are defined in a separate
251 * section as follows :-
254 * SectionText."name" {
264 * All the enumerated text values are listed in the values list.<br>
265 * The enumerated control is similar to the other controls and defined as
269 * SectionControlMixer."name" {
270 * comment "optional comments"
272 * index "1" # Index number
274 * texts "EQU1" # Enumerated text items
276 * channel."name" { # Channel maps
280 * ops."ctl" { # Ops callback functions
284 * data "pdata for mixer1" # optional private data
288 * <h4>DAPM Graph</h4>
289 * DAPM graphs can easily be defined using the topology file. The format is
290 * very similar to the DAPM graph kernel format. :-
293 * SectionGraph."dsp" {
294 * index "1" # Index number
297 * "sink1, control, source1"
303 * The lines in the graph are defined as a variable size list of sinks,
304 * controls and sources. The control name is optional as some graph lines have
305 * no associated controls. The section name can be used to differentiate the
306 * graph with other graphs, it's not used by the kernel atm.
308 * <h4>DAPM Widgets</h4>
309 * DAPM widgets are similar to controls in that they can include many other
310 * objects. Widgets can contain private data, mixer controls and enum controls.
312 * The following widget types are supported and match the driver types :-
331 * Widgets are defined as follows :-
334 * SectionWidget."name" {
336 * index "1" # Index number
338 * type "aif_in" # Widget type - detailed above
340 * no_pm "true" # No PM control bit.
341 * reg "20" # PM bit register offset
342 * shift "0" # PM bit register shift
343 * invert "1 # PM bit is inverted
344 * subseq "8" # subsequence number
346 * event_type "1" # DAPM widget event type
347 * event_flags "1" # DAPM widget event flags
349 * mixer "name" # Optional Mixer Control
350 * enum "name" # Optional Enum Control
352 * data "name" # optional private data
356 * The section name is the widget name. The mixer and enum fields are mutually
357 * exclusive and used to include controls into the widget. The index and data
358 * fields are the same for widgets as they are for controls whilst the other
359 * fields map on very closely to the driver widget fields.
361 * <h4>PCM Capabilities</h4>
362 * Topology can also define the capabilities of FE and BE PCMs. Capabilities
363 * can be defined with the following section :-
366 * SectionPCMCapabilities."name" {
368 * formats "S24_LE,S16_LE" # Supported formats
369 * rate_min "48000" # Max supported sample rate
370 * rate_max "48000" # Min supported sample rate
371 * channels_min "2" # Min number of channels
372 * channels_max "2" # max number of channels
375 * The supported formats use the same naming convention as the driver macros.
376 * The PCM capabilities name can be referred to and included by BE, PCM and
377 * Codec <-> codec topology sections.
379 * <h4>PCM Configurations</h4>
380 * PCM runtime configurations can be defined for playback and capture stream
381 * directions with the following section :-
384 * SectionPCMConfig."name" {
386 * config."playback" { # playback config
387 * format "S16_LE" # playback format
388 * rate "48000" # playback sample rate
389 * channels "2" # playback channels
390 * tdm_slot "0xf" # playback TDM slot
393 * config."capture" { # capture config
394 * format "S16_LE" # capture format
395 * rate "48000" # capture sample rate
396 * channels "2" # capture channels
397 * tdm_slot "0xf" # capture TDM slot
402 * The supported formats use the same naming convention as the driver macros.
403 * The PCM configuration name can be referred to and included by BE, PCM and
404 * Codec <-> codec topology sections.
406 * <h4>PCM Configurations</h4>
407 * PCM, BE and Codec to Codec link sections define the supported capabilities
408 * and configurations for supported playback and capture streams. The
409 * definitions and content for PCMs, BE and Codec links are the same with the
410 * exception of the section type :-
413 * SectionPCM."name" {
424 * The section types above should be used for PCMs, Back Ends and Codec to Codec
425 * links respectively.<br>
427 * The data for each section is defined as follows :-
430 * SectionPCM."name" {
432 * index "1" # Index number
434 * id "0" # used for binding to the PCM
437 * capabilities "capabilities1" # capabilities for playback
439 * configs [ # supported configs for playback
446 * capabilities "capabilities2" # capabilities for capture
448 * configs [ # supported configs for capture
459 /** Maximum number of channels supported in one control */
460 #define SND_TPLG_MAX_CHAN 8
462 /** Topology context */
463 typedef struct snd_tplg snd_tplg_t;
465 /** Topology object types */
467 SND_TPLG_TYPE_TLV = 0, /*!< TLV Data */
468 SND_TPLG_TYPE_MIXER, /*!< Mixer control*/
469 SND_TPLG_TYPE_ENUM, /*!< Enumerated control */
470 SND_TPLG_TYPE_TEXT, /*!< Text data */
471 SND_TPLG_TYPE_DATA, /*!< Private data */
472 SND_TPLG_TYPE_BYTES, /*!< Byte control */
473 SND_TPLG_TYPE_STREAM_CONFIG, /*!< PCM Stream configuration */
474 SND_TPLG_TYPE_STREAM_CAPS, /*!< PCM Stream capabilities */
475 SND_TPLG_TYPE_PCM, /*!< PCM stream device */
476 SND_TPLG_TYPE_DAPM_WIDGET, /*!< DAPM widget */
477 SND_TPLG_TYPE_DAPM_GRAPH, /*!< DAPM graph elements */
478 SND_TPLG_TYPE_BE, /*!< BE DAI link */
479 SND_TPLG_TYPE_CC, /*!< Hostless codec <-> codec link */
480 SND_TPLG_TYPE_MANIFEST, /*!< Topology manifest */
484 * \brief Create a new topology parser instance.
485 * \return New topology parser instance
487 snd_tplg_t *snd_tplg_new(void);
490 * \brief Free a topology parser instance.
491 * \param tplg Topology parser instance
493 void snd_tplg_free(snd_tplg_t *tplg);
496 * \brief Parse and build topology text file into binary file.
497 * \param tplg Topology instance.
498 * \param infile Topology text input file to be parsed
499 * \param outfile Binary topology output file.
500 * \return Zero on success, otherwise a negative error code
502 int snd_tplg_build_file(snd_tplg_t *tplg, const char *infile,
503 const char *outfile);
506 * \brief Enable verbose reporting of binary file output
507 * \param tplg Topology Instance
508 * \param verbose Enable verbose output level if non zero
510 void snd_tplg_verbose(snd_tplg_t *tplg, int verbose);
512 /** \struct snd_tplg_tlv_template
513 * \brief Template type for all TLV objects.
515 struct snd_tplg_tlv_template {
516 int type; /*!< TLV type SNDRV_CTL_TLVT_ */
519 /** \struct snd_tplg_tlv_dbscale_template
520 * \brief Template type for TLV Scale objects.
522 struct snd_tplg_tlv_dbscale_template {
523 struct snd_tplg_tlv_template hdr; /*!< TLV type header */
524 int min; /*!< dB minimum value in 0.1dB */
525 int step; /*!< dB step size in 0.1dB */
526 int mute; /*!< is min dB value mute ? */
529 /** \struct snd_tplg_channel_template
530 * \brief Template type for single channel mapping.
532 struct snd_tplg_channel_elem {
533 int size; /*!< size in bytes of this structure */
534 int reg; /*!< channel control register */
535 int shift; /*!< channel shift for control bits */
536 int id; /*!< ID maps to Left, Right, LFE etc */
539 /** \struct snd_tplg_channel_map_template
540 * \brief Template type for channel mapping.
542 struct snd_tplg_channel_map_template {
543 int num_channels; /*!< number of channel mappings */
544 struct snd_tplg_channel_elem channel[SND_TPLG_MAX_CHAN]; /*!< mapping */
547 /** \struct snd_tplg_pdata_template
548 * \brief Template type for private data objects.
550 struct snd_tplg_pdata_template {
551 unsigned int length; /*!< data length */
552 const void *data; /*!< data */
555 /** \struct snd_tplg_io_ops_template
556 * \brief Template type for object operations mapping.
558 struct snd_tplg_io_ops_template {
559 int get; /*!< get callback ID */
560 int put; /*!< put callback ID */
561 int info; /*!< info callback ID */
564 /** \struct snd_tplg_ctl_template
565 * \brief Template type for control objects.
567 struct snd_tplg_ctl_template {
568 int type; /*!< Control type */
569 const char *name; /*!< Control name */
570 int access; /*!< Control access */
571 struct snd_tplg_io_ops_template ops; /*!< operations */
572 struct snd_tplg_tlv_template *tlv; /*!< non NULL means we have TLV data */
575 /** \struct snd_tplg_mixer_template
576 * \brief Template type for mixer control objects.
578 struct snd_tplg_mixer_template {
579 struct snd_tplg_ctl_template hdr; /*!< control type header */
580 struct snd_tplg_channel_map_template *map; /*!< channel map */
581 int min; /*!< min value for mixer */
582 int max; /*!< max value for mixer */
583 int platform_max; /*!< max value for platform control */
584 int invert; /*!< whether controls bits are inverted */
585 struct snd_soc_tplg_private *priv; /*!< control private data */
588 /** \struct snd_tplg_enum_template
589 * \brief Template type for enumerated control objects.
591 struct snd_tplg_enum_template {
592 struct snd_tplg_ctl_template hdr; /*!< control type header */
593 struct snd_tplg_channel_map_template *map; /*!< channel map */
594 int items; /*!< number of enumerated items in control */
595 int mask; /*!< register mask size */
596 const char **texts; /*!< control text items */
597 const int **values; /*!< control value items */
598 struct snd_soc_tplg_private *priv; /*!< control private data */
601 /** \struct snd_tplg_bytes_template
602 * \brief Template type for TLV Scale objects.
604 struct snd_tplg_bytes_template {
605 struct snd_tplg_ctl_template hdr; /*!< control type header */
606 int max; /*!< max byte control value */
607 int mask; /*!< byte control mask */
608 int base; /*!< base register */
609 int num_regs; /*!< number of registers */
610 struct snd_tplg_io_ops_template ext_ops; /*!< ops mapping */
611 struct snd_soc_tplg_private *priv; /*!< control private data */
614 /** \struct snd_tplg_graph_elem
615 * \brief Template type for single DAPM graph element.
617 struct snd_tplg_graph_elem {
618 const char *src; /*!< source widget name */
619 const char *ctl; /*!< control name or NULL if no control */
620 const char *sink; /*!< sink widget name */
623 /** \struct snd_tplg_graph_template
624 * \brief Template type for array of DAPM graph elements.
626 struct snd_tplg_graph_template {
627 int count; /*!< Number of graph elements */
628 struct snd_tplg_graph_elem elem[0]; /*!< graph elements */
631 /** \struct snd_tplg_widget_template
632 * \brief Template type for DAPM widget objects.
634 struct snd_tplg_widget_template {
635 int id; /*!< SND_SOC_DAPM_CTL */
636 const char *name; /*!< widget name */
637 const char *sname; /*!< stream name (certain widgets only) */
638 int reg; /*!< negative reg = no direct dapm */
639 int shift; /*!< bits to shift */
640 int mask; /*!< non-shifted mask */
641 int subseq; /*!< sort within widget type */
642 unsigned int invert; /*!< invert the power bit */
643 unsigned int ignore_suspend; /*!< kept enabled over suspend */
644 unsigned short event_flags; /*!< PM event sequence flags */
645 unsigned short event_type; /*!< PM event sequence type */
646 struct snd_soc_tplg_private *priv; /*!< widget private data */
647 int num_ctls; /*!< Number of controls used by widget */
648 struct snd_tplg_ctl_template *ctl[0]; /*!< array of widget controls */
651 /** \struct snd_tplg_obj_template
652 * \brief Generic Template Object
654 typedef struct snd_tplg_obj_template {
655 enum snd_tplg_type type; /*!< template object type */
656 int index; /*!< group index for object */
657 int version; /*!< optional vendor specific version details */
658 int vendor_type; /*!< optional vendor specific type info */
660 struct snd_tplg_widget_template *widget; /*!< DAPM widget */
661 struct snd_tplg_mixer_template *mixer; /*!< Mixer control */
662 struct snd_tplg_bytes_template *bytes_ctl; /*!< Bytes control */
663 struct snd_tplg_enum_template *enum_ctl; /*!< Enum control */
664 struct snd_tplg_graph_template *graph; /*!< Graph elements */
666 } snd_tplg_obj_template_t;
669 * \brief Register topology template object.
670 * \param tplg Topology instance.
671 * \param t Template object.
672 * \return Zero on success, otherwise a negative error code
674 int snd_tplg_add_object(snd_tplg_t *tplg, snd_tplg_obj_template_t *t);
677 * \brief Build all registered topology data into binary file.
678 * \param tplg Topology instance.
679 * \param outfile Binary topology output file.
680 * \return Zero on success, otherwise a negative error code
682 int snd_tplg_build(snd_tplg_t *tplg, const char *outfile);
685 * \brief Attach private data to topology manifest.
686 * \param tplg Topology instance.
687 * \param data Private data.
688 * \param len Length of data in bytes.
689 * \return Zero on success, otherwise a negative error code
691 int snd_tplg_set_manifest_data(snd_tplg_t *tplg, const void *data, int len);
694 * \brief Set an optional vendor specific version number.
695 * \param tplg Topology instance.
696 * \param version Vendor specific version number.
697 * \return Zero on success, otherwise a negative error code
699 int snd_tplg_set_version(snd_tplg_t *tplg, unsigned int version);
707 #endif /* __ALSA_TOPOLOGY_H */