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TOMOYO Linux Cross Reference
Linux/sound/soc/soc-topology.c

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  1 /*
  2  * soc-topology.c  --  ALSA SoC Topology
  3  *
  4  * Copyright (C) 2012 Texas Instruments Inc.
  5  * Copyright (C) 2015 Intel Corporation.
  6  *
  7  * Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com>
  8  *              K, Mythri P <mythri.p.k@intel.com>
  9  *              Prusty, Subhransu S <subhransu.s.prusty@intel.com>
 10  *              B, Jayachandran <jayachandran.b@intel.com>
 11  *              Abdullah, Omair M <omair.m.abdullah@intel.com>
 12  *              Jin, Yao <yao.jin@intel.com>
 13  *              Lin, Mengdong <mengdong.lin@intel.com>
 14  *
 15  *  This program is free software; you can redistribute  it and/or modify it
 16  *  under  the terms of  the GNU General  Public License as published by the
 17  *  Free Software Foundation;  either version 2 of the  License, or (at your
 18  *  option) any later version.
 19  *
 20  *  Add support to read audio firmware topology alongside firmware text. The
 21  *  topology data can contain kcontrols, DAPM graphs, widgets, DAIs, DAI links,
 22  *  equalizers, firmware, coefficients etc.
 23  *
 24  *  This file only manages the core ALSA and ASoC components, all other bespoke
 25  *  firmware topology data is passed to component drivers for bespoke handling.
 26  */
 27 
 28 #include <linux/kernel.h>
 29 #include <linux/export.h>
 30 #include <linux/list.h>
 31 #include <linux/firmware.h>
 32 #include <linux/slab.h>
 33 #include <sound/soc.h>
 34 #include <sound/soc-dapm.h>
 35 #include <sound/soc-topology.h>
 36 #include <sound/tlv.h>
 37 
 38 /*
 39  * We make several passes over the data (since it wont necessarily be ordered)
 40  * and process objects in the following order. This guarantees the component
 41  * drivers will be ready with any vendor data before the mixers and DAPM objects
 42  * are loaded (that may make use of the vendor data).
 43  */
 44 #define SOC_TPLG_PASS_MANIFEST          0
 45 #define SOC_TPLG_PASS_VENDOR            1
 46 #define SOC_TPLG_PASS_MIXER             2
 47 #define SOC_TPLG_PASS_WIDGET            3
 48 #define SOC_TPLG_PASS_PCM_DAI           4
 49 #define SOC_TPLG_PASS_GRAPH             5
 50 #define SOC_TPLG_PASS_PINS              6
 51 
 52 #define SOC_TPLG_PASS_START     SOC_TPLG_PASS_MANIFEST
 53 #define SOC_TPLG_PASS_END       SOC_TPLG_PASS_PINS
 54 
 55 struct soc_tplg {
 56         const struct firmware *fw;
 57 
 58         /* runtime FW parsing */
 59         const u8 *pos;          /* read postion */
 60         const u8 *hdr_pos;      /* header position */
 61         unsigned int pass;      /* pass number */
 62 
 63         /* component caller */
 64         struct device *dev;
 65         struct snd_soc_component *comp;
 66         u32 index;      /* current block index */
 67         u32 req_index;  /* required index, only loaded/free matching blocks */
 68 
 69         /* vendor specific kcontrol operations */
 70         const struct snd_soc_tplg_kcontrol_ops *io_ops;
 71         int io_ops_count;
 72 
 73         /* vendor specific bytes ext handlers, for TLV bytes controls */
 74         const struct snd_soc_tplg_bytes_ext_ops *bytes_ext_ops;
 75         int bytes_ext_ops_count;
 76 
 77         /* optional fw loading callbacks to component drivers */
 78         struct snd_soc_tplg_ops *ops;
 79 };
 80 
 81 static int soc_tplg_process_headers(struct soc_tplg *tplg);
 82 static void soc_tplg_complete(struct soc_tplg *tplg);
 83 struct snd_soc_dapm_widget *
 84 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
 85                          const struct snd_soc_dapm_widget *widget);
 86 struct snd_soc_dapm_widget *
 87 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
 88                          const struct snd_soc_dapm_widget *widget);
 89 
 90 /* check we dont overflow the data for this control chunk */
 91 static int soc_tplg_check_elem_count(struct soc_tplg *tplg, size_t elem_size,
 92         unsigned int count, size_t bytes, const char *elem_type)
 93 {
 94         const u8 *end = tplg->pos + elem_size * count;
 95 
 96         if (end > tplg->fw->data + tplg->fw->size) {
 97                 dev_err(tplg->dev, "ASoC: %s overflow end of data\n",
 98                         elem_type);
 99                 return -EINVAL;
100         }
101 
102         /* check there is enough room in chunk for control.
103            extra bytes at the end of control are for vendor data here  */
104         if (elem_size * count > bytes) {
105                 dev_err(tplg->dev,
106                         "ASoC: %s count %d of size %zu is bigger than chunk %zu\n",
107                         elem_type, count, elem_size, bytes);
108                 return -EINVAL;
109         }
110 
111         return 0;
112 }
113 
114 static inline int soc_tplg_is_eof(struct soc_tplg *tplg)
115 {
116         const u8 *end = tplg->hdr_pos;
117 
118         if (end >= tplg->fw->data + tplg->fw->size)
119                 return 1;
120         return 0;
121 }
122 
123 static inline unsigned long soc_tplg_get_hdr_offset(struct soc_tplg *tplg)
124 {
125         return (unsigned long)(tplg->hdr_pos - tplg->fw->data);
126 }
127 
128 static inline unsigned long soc_tplg_get_offset(struct soc_tplg *tplg)
129 {
130         return (unsigned long)(tplg->pos - tplg->fw->data);
131 }
132 
133 /* mapping of Kcontrol types and associated operations. */
134 static const struct snd_soc_tplg_kcontrol_ops io_ops[] = {
135         {SND_SOC_TPLG_CTL_VOLSW, snd_soc_get_volsw,
136                 snd_soc_put_volsw, snd_soc_info_volsw},
137         {SND_SOC_TPLG_CTL_VOLSW_SX, snd_soc_get_volsw_sx,
138                 snd_soc_put_volsw_sx, NULL},
139         {SND_SOC_TPLG_CTL_ENUM, snd_soc_get_enum_double,
140                 snd_soc_put_enum_double, snd_soc_info_enum_double},
141         {SND_SOC_TPLG_CTL_ENUM_VALUE, snd_soc_get_enum_double,
142                 snd_soc_put_enum_double, NULL},
143         {SND_SOC_TPLG_CTL_BYTES, snd_soc_bytes_get,
144                 snd_soc_bytes_put, snd_soc_bytes_info},
145         {SND_SOC_TPLG_CTL_RANGE, snd_soc_get_volsw_range,
146                 snd_soc_put_volsw_range, snd_soc_info_volsw_range},
147         {SND_SOC_TPLG_CTL_VOLSW_XR_SX, snd_soc_get_xr_sx,
148                 snd_soc_put_xr_sx, snd_soc_info_xr_sx},
149         {SND_SOC_TPLG_CTL_STROBE, snd_soc_get_strobe,
150                 snd_soc_put_strobe, NULL},
151         {SND_SOC_TPLG_DAPM_CTL_VOLSW, snd_soc_dapm_get_volsw,
152                 snd_soc_dapm_put_volsw, snd_soc_info_volsw},
153         {SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE, snd_soc_dapm_get_enum_double,
154                 snd_soc_dapm_put_enum_double, snd_soc_info_enum_double},
155         {SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT, snd_soc_dapm_get_enum_double,
156                 snd_soc_dapm_put_enum_double, NULL},
157         {SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE, snd_soc_dapm_get_enum_double,
158                 snd_soc_dapm_put_enum_double, NULL},
159         {SND_SOC_TPLG_DAPM_CTL_PIN, snd_soc_dapm_get_pin_switch,
160                 snd_soc_dapm_put_pin_switch, snd_soc_dapm_info_pin_switch},
161 };
162 
163 struct soc_tplg_map {
164         int uid;
165         int kid;
166 };
167 
168 /* mapping of widget types from UAPI IDs to kernel IDs */
169 static const struct soc_tplg_map dapm_map[] = {
170         {SND_SOC_TPLG_DAPM_INPUT, snd_soc_dapm_input},
171         {SND_SOC_TPLG_DAPM_OUTPUT, snd_soc_dapm_output},
172         {SND_SOC_TPLG_DAPM_MUX, snd_soc_dapm_mux},
173         {SND_SOC_TPLG_DAPM_MIXER, snd_soc_dapm_mixer},
174         {SND_SOC_TPLG_DAPM_PGA, snd_soc_dapm_pga},
175         {SND_SOC_TPLG_DAPM_OUT_DRV, snd_soc_dapm_out_drv},
176         {SND_SOC_TPLG_DAPM_ADC, snd_soc_dapm_adc},
177         {SND_SOC_TPLG_DAPM_DAC, snd_soc_dapm_dac},
178         {SND_SOC_TPLG_DAPM_SWITCH, snd_soc_dapm_switch},
179         {SND_SOC_TPLG_DAPM_PRE, snd_soc_dapm_pre},
180         {SND_SOC_TPLG_DAPM_POST, snd_soc_dapm_post},
181         {SND_SOC_TPLG_DAPM_AIF_IN, snd_soc_dapm_aif_in},
182         {SND_SOC_TPLG_DAPM_AIF_OUT, snd_soc_dapm_aif_out},
183         {SND_SOC_TPLG_DAPM_DAI_IN, snd_soc_dapm_dai_in},
184         {SND_SOC_TPLG_DAPM_DAI_OUT, snd_soc_dapm_dai_out},
185         {SND_SOC_TPLG_DAPM_DAI_LINK, snd_soc_dapm_dai_link},
186 };
187 
188 static int tplc_chan_get_reg(struct soc_tplg *tplg,
189         struct snd_soc_tplg_channel *chan, int map)
190 {
191         int i;
192 
193         for (i = 0; i < SND_SOC_TPLG_MAX_CHAN; i++) {
194                 if (chan[i].id == map)
195                         return chan[i].reg;
196         }
197 
198         return -EINVAL;
199 }
200 
201 static int tplc_chan_get_shift(struct soc_tplg *tplg,
202         struct snd_soc_tplg_channel *chan, int map)
203 {
204         int i;
205 
206         for (i = 0; i < SND_SOC_TPLG_MAX_CHAN; i++) {
207                 if (chan[i].id == map)
208                         return chan[i].shift;
209         }
210 
211         return -EINVAL;
212 }
213 
214 static int get_widget_id(int tplg_type)
215 {
216         int i;
217 
218         for (i = 0; i < ARRAY_SIZE(dapm_map); i++) {
219                 if (tplg_type == dapm_map[i].uid)
220                         return dapm_map[i].kid;
221         }
222 
223         return -EINVAL;
224 }
225 
226 static inline void soc_bind_err(struct soc_tplg *tplg,
227         struct snd_soc_tplg_ctl_hdr *hdr, int index)
228 {
229         dev_err(tplg->dev,
230                 "ASoC: invalid control type (g,p,i) %d:%d:%d index %d at 0x%lx\n",
231                 hdr->ops.get, hdr->ops.put, hdr->ops.info, index,
232                 soc_tplg_get_offset(tplg));
233 }
234 
235 static inline void soc_control_err(struct soc_tplg *tplg,
236         struct snd_soc_tplg_ctl_hdr *hdr, const char *name)
237 {
238         dev_err(tplg->dev,
239                 "ASoC: no complete mixer IO handler for %s type (g,p,i) %d:%d:%d at 0x%lx\n",
240                 name, hdr->ops.get, hdr->ops.put, hdr->ops.info,
241                 soc_tplg_get_offset(tplg));
242 }
243 
244 /* pass vendor data to component driver for processing */
245 static int soc_tplg_vendor_load_(struct soc_tplg *tplg,
246         struct snd_soc_tplg_hdr *hdr)
247 {
248         int ret = 0;
249 
250         if (tplg->comp && tplg->ops && tplg->ops->vendor_load)
251                 ret = tplg->ops->vendor_load(tplg->comp, hdr);
252         else {
253                 dev_err(tplg->dev, "ASoC: no vendor load callback for ID %d\n",
254                         hdr->vendor_type);
255                 return -EINVAL;
256         }
257 
258         if (ret < 0)
259                 dev_err(tplg->dev,
260                         "ASoC: vendor load failed at hdr offset %ld/0x%lx for type %d:%d\n",
261                         soc_tplg_get_hdr_offset(tplg),
262                         soc_tplg_get_hdr_offset(tplg),
263                         hdr->type, hdr->vendor_type);
264         return ret;
265 }
266 
267 /* pass vendor data to component driver for processing */
268 static int soc_tplg_vendor_load(struct soc_tplg *tplg,
269         struct snd_soc_tplg_hdr *hdr)
270 {
271         if (tplg->pass != SOC_TPLG_PASS_VENDOR)
272                 return 0;
273 
274         return soc_tplg_vendor_load_(tplg, hdr);
275 }
276 
277 /* optionally pass new dynamic widget to component driver. This is mainly for
278  * external widgets where we can assign private data/ops */
279 static int soc_tplg_widget_load(struct soc_tplg *tplg,
280         struct snd_soc_dapm_widget *w, struct snd_soc_tplg_dapm_widget *tplg_w)
281 {
282         if (tplg->comp && tplg->ops && tplg->ops->widget_load)
283                 return tplg->ops->widget_load(tplg->comp, w, tplg_w);
284 
285         return 0;
286 }
287 
288 /* pass DAI configurations to component driver for extra intialization */
289 static int soc_tplg_dai_load(struct soc_tplg *tplg,
290         struct snd_soc_dai_driver *dai_drv)
291 {
292         if (tplg->comp && tplg->ops && tplg->ops->dai_load)
293                 return tplg->ops->dai_load(tplg->comp, dai_drv);
294 
295         return 0;
296 }
297 
298 /* pass link configurations to component driver for extra intialization */
299 static int soc_tplg_dai_link_load(struct soc_tplg *tplg,
300         struct snd_soc_dai_link *link)
301 {
302         if (tplg->comp && tplg->ops && tplg->ops->link_load)
303                 return tplg->ops->link_load(tplg->comp, link);
304 
305         return 0;
306 }
307 
308 /* tell the component driver that all firmware has been loaded in this request */
309 static void soc_tplg_complete(struct soc_tplg *tplg)
310 {
311         if (tplg->comp && tplg->ops && tplg->ops->complete)
312                 tplg->ops->complete(tplg->comp);
313 }
314 
315 /* add a dynamic kcontrol */
316 static int soc_tplg_add_dcontrol(struct snd_card *card, struct device *dev,
317         const struct snd_kcontrol_new *control_new, const char *prefix,
318         void *data, struct snd_kcontrol **kcontrol)
319 {
320         int err;
321 
322         *kcontrol = snd_soc_cnew(control_new, data, control_new->name, prefix);
323         if (*kcontrol == NULL) {
324                 dev_err(dev, "ASoC: Failed to create new kcontrol %s\n",
325                 control_new->name);
326                 return -ENOMEM;
327         }
328 
329         err = snd_ctl_add(card, *kcontrol);
330         if (err < 0) {
331                 dev_err(dev, "ASoC: Failed to add %s: %d\n",
332                         control_new->name, err);
333                 return err;
334         }
335 
336         return 0;
337 }
338 
339 /* add a dynamic kcontrol for component driver */
340 static int soc_tplg_add_kcontrol(struct soc_tplg *tplg,
341         struct snd_kcontrol_new *k, struct snd_kcontrol **kcontrol)
342 {
343         struct snd_soc_component *comp = tplg->comp;
344 
345         return soc_tplg_add_dcontrol(comp->card->snd_card,
346                                 comp->dev, k, NULL, comp, kcontrol);
347 }
348 
349 /* remove a mixer kcontrol */
350 static void remove_mixer(struct snd_soc_component *comp,
351         struct snd_soc_dobj *dobj, int pass)
352 {
353         struct snd_card *card = comp->card->snd_card;
354         struct soc_mixer_control *sm =
355                 container_of(dobj, struct soc_mixer_control, dobj);
356         const unsigned int *p = NULL;
357 
358         if (pass != SOC_TPLG_PASS_MIXER)
359                 return;
360 
361         if (dobj->ops && dobj->ops->control_unload)
362                 dobj->ops->control_unload(comp, dobj);
363 
364         if (sm->dobj.control.kcontrol->tlv.p)
365                 p = sm->dobj.control.kcontrol->tlv.p;
366         snd_ctl_remove(card, sm->dobj.control.kcontrol);
367         list_del(&sm->dobj.list);
368         kfree(sm);
369         kfree(p);
370 }
371 
372 /* remove an enum kcontrol */
373 static void remove_enum(struct snd_soc_component *comp,
374         struct snd_soc_dobj *dobj, int pass)
375 {
376         struct snd_card *card = comp->card->snd_card;
377         struct soc_enum *se = container_of(dobj, struct soc_enum, dobj);
378         int i;
379 
380         if (pass != SOC_TPLG_PASS_MIXER)
381                 return;
382 
383         if (dobj->ops && dobj->ops->control_unload)
384                 dobj->ops->control_unload(comp, dobj);
385 
386         snd_ctl_remove(card, se->dobj.control.kcontrol);
387         list_del(&se->dobj.list);
388 
389         kfree(se->dobj.control.dvalues);
390         for (i = 0; i < se->items; i++)
391                 kfree(se->dobj.control.dtexts[i]);
392         kfree(se);
393 }
394 
395 /* remove a byte kcontrol */
396 static void remove_bytes(struct snd_soc_component *comp,
397         struct snd_soc_dobj *dobj, int pass)
398 {
399         struct snd_card *card = comp->card->snd_card;
400         struct soc_bytes_ext *sb =
401                 container_of(dobj, struct soc_bytes_ext, dobj);
402 
403         if (pass != SOC_TPLG_PASS_MIXER)
404                 return;
405 
406         if (dobj->ops && dobj->ops->control_unload)
407                 dobj->ops->control_unload(comp, dobj);
408 
409         snd_ctl_remove(card, sb->dobj.control.kcontrol);
410         list_del(&sb->dobj.list);
411         kfree(sb);
412 }
413 
414 /* remove a widget and it's kcontrols - routes must be removed first */
415 static void remove_widget(struct snd_soc_component *comp,
416         struct snd_soc_dobj *dobj, int pass)
417 {
418         struct snd_card *card = comp->card->snd_card;
419         struct snd_soc_dapm_widget *w =
420                 container_of(dobj, struct snd_soc_dapm_widget, dobj);
421         int i;
422 
423         if (pass != SOC_TPLG_PASS_WIDGET)
424                 return;
425 
426         if (dobj->ops && dobj->ops->widget_unload)
427                 dobj->ops->widget_unload(comp, dobj);
428 
429         /*
430          * Dynamic Widgets either have 1 enum kcontrol or 1..N mixers.
431          * The enum may either have an array of values or strings.
432          */
433         if (dobj->widget.kcontrol_enum) {
434                 /* enumerated widget mixer */
435                 struct soc_enum *se =
436                         (struct soc_enum *)w->kcontrols[0]->private_value;
437 
438                 snd_ctl_remove(card, w->kcontrols[0]);
439 
440                 kfree(se->dobj.control.dvalues);
441                 for (i = 0; i < se->items; i++)
442                         kfree(se->dobj.control.dtexts[i]);
443 
444                 kfree(se);
445                 kfree(w->kcontrol_news);
446         } else {
447                 /* non enumerated widget mixer */
448                 for (i = 0; i < w->num_kcontrols; i++) {
449                         struct snd_kcontrol *kcontrol = w->kcontrols[i];
450                         struct soc_mixer_control *sm =
451                         (struct soc_mixer_control *) kcontrol->private_value;
452 
453                         kfree(w->kcontrols[i]->tlv.p);
454 
455                         snd_ctl_remove(card, w->kcontrols[i]);
456                         kfree(sm);
457                 }
458                 kfree(w->kcontrol_news);
459         }
460         /* widget w is freed by soc-dapm.c */
461 }
462 
463 /* remove DAI configurations */
464 static void remove_dai(struct snd_soc_component *comp,
465         struct snd_soc_dobj *dobj, int pass)
466 {
467         struct snd_soc_dai_driver *dai_drv =
468                 container_of(dobj, struct snd_soc_dai_driver, dobj);
469 
470         if (pass != SOC_TPLG_PASS_PCM_DAI)
471                 return;
472 
473         if (dobj->ops && dobj->ops->dai_unload)
474                 dobj->ops->dai_unload(comp, dobj);
475 
476         list_del(&dobj->list);
477         kfree(dai_drv);
478 }
479 
480 /* remove link configurations */
481 static void remove_link(struct snd_soc_component *comp,
482         struct snd_soc_dobj *dobj, int pass)
483 {
484         struct snd_soc_dai_link *link =
485                 container_of(dobj, struct snd_soc_dai_link, dobj);
486 
487         if (pass != SOC_TPLG_PASS_PCM_DAI)
488                 return;
489 
490         if (dobj->ops && dobj->ops->link_unload)
491                 dobj->ops->link_unload(comp, dobj);
492 
493         list_del(&dobj->list);
494         snd_soc_remove_dai_link(comp->card, link);
495         kfree(link);
496 }
497 
498 /* bind a kcontrol to it's IO handlers */
499 static int soc_tplg_kcontrol_bind_io(struct snd_soc_tplg_ctl_hdr *hdr,
500         struct snd_kcontrol_new *k,
501         const struct soc_tplg *tplg)
502 {
503         const struct snd_soc_tplg_kcontrol_ops *ops;
504         const struct snd_soc_tplg_bytes_ext_ops *ext_ops;
505         int num_ops, i;
506 
507         if (hdr->ops.info == SND_SOC_TPLG_CTL_BYTES
508                 && k->iface & SNDRV_CTL_ELEM_IFACE_MIXER
509                 && k->access & SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE
510                 && k->access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
511                 struct soc_bytes_ext *sbe;
512                 struct snd_soc_tplg_bytes_control *be;
513 
514                 sbe = (struct soc_bytes_ext *)k->private_value;
515                 be = container_of(hdr, struct snd_soc_tplg_bytes_control, hdr);
516 
517                 /* TLV bytes controls need standard kcontrol info handler,
518                  * TLV callback and extended put/get handlers.
519                  */
520                 k->info = snd_soc_bytes_info_ext;
521                 k->tlv.c = snd_soc_bytes_tlv_callback;
522 
523                 ext_ops = tplg->bytes_ext_ops;
524                 num_ops = tplg->bytes_ext_ops_count;
525                 for (i = 0; i < num_ops; i++) {
526                         if (!sbe->put && ext_ops[i].id == be->ext_ops.put)
527                                 sbe->put = ext_ops[i].put;
528                         if (!sbe->get && ext_ops[i].id == be->ext_ops.get)
529                                 sbe->get = ext_ops[i].get;
530                 }
531 
532                 if (sbe->put && sbe->get)
533                         return 0;
534                 else
535                         return -EINVAL;
536         }
537 
538         /* try and map vendor specific kcontrol handlers first */
539         ops = tplg->io_ops;
540         num_ops = tplg->io_ops_count;
541         for (i = 0; i < num_ops; i++) {
542 
543                 if (k->put == NULL && ops[i].id == hdr->ops.put)
544                         k->put = ops[i].put;
545                 if (k->get == NULL && ops[i].id == hdr->ops.get)
546                         k->get = ops[i].get;
547                 if (k->info == NULL && ops[i].id == hdr->ops.info)
548                         k->info = ops[i].info;
549         }
550 
551         /* vendor specific handlers found ? */
552         if (k->put && k->get && k->info)
553                 return 0;
554 
555         /* none found so try standard kcontrol handlers */
556         ops = io_ops;
557         num_ops = ARRAY_SIZE(io_ops);
558         for (i = 0; i < num_ops; i++) {
559 
560                 if (k->put == NULL && ops[i].id == hdr->ops.put)
561                         k->put = ops[i].put;
562                 if (k->get == NULL && ops[i].id == hdr->ops.get)
563                         k->get = ops[i].get;
564                 if (k->info == NULL && ops[i].id == hdr->ops.info)
565                         k->info = ops[i].info;
566         }
567 
568         /* standard handlers found ? */
569         if (k->put && k->get && k->info)
570                 return 0;
571 
572         /* nothing to bind */
573         return -EINVAL;
574 }
575 
576 /* bind a widgets to it's evnt handlers */
577 int snd_soc_tplg_widget_bind_event(struct snd_soc_dapm_widget *w,
578                 const struct snd_soc_tplg_widget_events *events,
579                 int num_events, u16 event_type)
580 {
581         int i;
582 
583         w->event = NULL;
584 
585         for (i = 0; i < num_events; i++) {
586                 if (event_type == events[i].type) {
587 
588                         /* found - so assign event */
589                         w->event = events[i].event_handler;
590                         return 0;
591                 }
592         }
593 
594         /* not found */
595         return -EINVAL;
596 }
597 EXPORT_SYMBOL_GPL(snd_soc_tplg_widget_bind_event);
598 
599 /* optionally pass new dynamic kcontrol to component driver. */
600 static int soc_tplg_init_kcontrol(struct soc_tplg *tplg,
601         struct snd_kcontrol_new *k, struct snd_soc_tplg_ctl_hdr *hdr)
602 {
603         if (tplg->comp && tplg->ops && tplg->ops->control_load)
604                 return tplg->ops->control_load(tplg->comp, k, hdr);
605 
606         return 0;
607 }
608 
609 
610 static int soc_tplg_create_tlv_db_scale(struct soc_tplg *tplg,
611         struct snd_kcontrol_new *kc, struct snd_soc_tplg_tlv_dbscale *scale)
612 {
613         unsigned int item_len = 2 * sizeof(unsigned int);
614         unsigned int *p;
615 
616         p = kzalloc(item_len + 2 * sizeof(unsigned int), GFP_KERNEL);
617         if (!p)
618                 return -ENOMEM;
619 
620         p[0] = SNDRV_CTL_TLVT_DB_SCALE;
621         p[1] = item_len;
622         p[2] = scale->min;
623         p[3] = (scale->step & TLV_DB_SCALE_MASK)
624                         | (scale->mute ? TLV_DB_SCALE_MUTE : 0);
625 
626         kc->tlv.p = (void *)p;
627         return 0;
628 }
629 
630 static int soc_tplg_create_tlv(struct soc_tplg *tplg,
631         struct snd_kcontrol_new *kc, struct snd_soc_tplg_ctl_hdr *tc)
632 {
633         struct snd_soc_tplg_ctl_tlv *tplg_tlv;
634 
635         if (!(tc->access & SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE))
636                 return 0;
637 
638         if (!(tc->access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK)) {
639                 tplg_tlv = &tc->tlv;
640                 switch (tplg_tlv->type) {
641                 case SNDRV_CTL_TLVT_DB_SCALE:
642                         return soc_tplg_create_tlv_db_scale(tplg, kc,
643                                         &tplg_tlv->scale);
644 
645                 /* TODO: add support for other TLV types */
646                 default:
647                         dev_dbg(tplg->dev, "Unsupported TLV type %d\n",
648                                         tplg_tlv->type);
649                         return -EINVAL;
650                 }
651         }
652 
653         return 0;
654 }
655 
656 static inline void soc_tplg_free_tlv(struct soc_tplg *tplg,
657         struct snd_kcontrol_new *kc)
658 {
659         kfree(kc->tlv.p);
660 }
661 
662 static int soc_tplg_dbytes_create(struct soc_tplg *tplg, unsigned int count,
663         size_t size)
664 {
665         struct snd_soc_tplg_bytes_control *be;
666         struct soc_bytes_ext *sbe;
667         struct snd_kcontrol_new kc;
668         int i, err;
669 
670         if (soc_tplg_check_elem_count(tplg,
671                 sizeof(struct snd_soc_tplg_bytes_control), count,
672                         size, "mixer bytes")) {
673                 dev_err(tplg->dev, "ASoC: Invalid count %d for byte control\n",
674                         count);
675                 return -EINVAL;
676         }
677 
678         for (i = 0; i < count; i++) {
679                 be = (struct snd_soc_tplg_bytes_control *)tplg->pos;
680 
681                 /* validate kcontrol */
682                 if (strnlen(be->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
683                         SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
684                         return -EINVAL;
685 
686                 sbe = kzalloc(sizeof(*sbe), GFP_KERNEL);
687                 if (sbe == NULL)
688                         return -ENOMEM;
689 
690                 tplg->pos += (sizeof(struct snd_soc_tplg_bytes_control) +
691                         be->priv.size);
692 
693                 dev_dbg(tplg->dev,
694                         "ASoC: adding bytes kcontrol %s with access 0x%x\n",
695                         be->hdr.name, be->hdr.access);
696 
697                 memset(&kc, 0, sizeof(kc));
698                 kc.name = be->hdr.name;
699                 kc.private_value = (long)sbe;
700                 kc.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
701                 kc.access = be->hdr.access;
702 
703                 sbe->max = be->max;
704                 sbe->dobj.type = SND_SOC_DOBJ_BYTES;
705                 sbe->dobj.ops = tplg->ops;
706                 INIT_LIST_HEAD(&sbe->dobj.list);
707 
708                 /* map io handlers */
709                 err = soc_tplg_kcontrol_bind_io(&be->hdr, &kc, tplg);
710                 if (err) {
711                         soc_control_err(tplg, &be->hdr, be->hdr.name);
712                         kfree(sbe);
713                         continue;
714                 }
715 
716                 /* pass control to driver for optional further init */
717                 err = soc_tplg_init_kcontrol(tplg, &kc,
718                         (struct snd_soc_tplg_ctl_hdr *)be);
719                 if (err < 0) {
720                         dev_err(tplg->dev, "ASoC: failed to init %s\n",
721                                 be->hdr.name);
722                         kfree(sbe);
723                         continue;
724                 }
725 
726                 /* register control here */
727                 err = soc_tplg_add_kcontrol(tplg, &kc,
728                         &sbe->dobj.control.kcontrol);
729                 if (err < 0) {
730                         dev_err(tplg->dev, "ASoC: failed to add %s\n",
731                                 be->hdr.name);
732                         kfree(sbe);
733                         continue;
734                 }
735 
736                 list_add(&sbe->dobj.list, &tplg->comp->dobj_list);
737         }
738         return 0;
739 
740 }
741 
742 static int soc_tplg_dmixer_create(struct soc_tplg *tplg, unsigned int count,
743         size_t size)
744 {
745         struct snd_soc_tplg_mixer_control *mc;
746         struct soc_mixer_control *sm;
747         struct snd_kcontrol_new kc;
748         int i, err;
749 
750         if (soc_tplg_check_elem_count(tplg,
751                 sizeof(struct snd_soc_tplg_mixer_control),
752                 count, size, "mixers")) {
753 
754                 dev_err(tplg->dev, "ASoC: invalid count %d for controls\n",
755                         count);
756                 return -EINVAL;
757         }
758 
759         for (i = 0; i < count; i++) {
760                 mc = (struct snd_soc_tplg_mixer_control *)tplg->pos;
761 
762                 /* validate kcontrol */
763                 if (strnlen(mc->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
764                         SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
765                         return -EINVAL;
766 
767                 sm = kzalloc(sizeof(*sm), GFP_KERNEL);
768                 if (sm == NULL)
769                         return -ENOMEM;
770                 tplg->pos += (sizeof(struct snd_soc_tplg_mixer_control) +
771                         mc->priv.size);
772 
773                 dev_dbg(tplg->dev,
774                         "ASoC: adding mixer kcontrol %s with access 0x%x\n",
775                         mc->hdr.name, mc->hdr.access);
776 
777                 memset(&kc, 0, sizeof(kc));
778                 kc.name = mc->hdr.name;
779                 kc.private_value = (long)sm;
780                 kc.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
781                 kc.access = mc->hdr.access;
782 
783                 /* we only support FL/FR channel mapping atm */
784                 sm->reg = tplc_chan_get_reg(tplg, mc->channel,
785                         SNDRV_CHMAP_FL);
786                 sm->rreg = tplc_chan_get_reg(tplg, mc->channel,
787                         SNDRV_CHMAP_FR);
788                 sm->shift = tplc_chan_get_shift(tplg, mc->channel,
789                         SNDRV_CHMAP_FL);
790                 sm->rshift = tplc_chan_get_shift(tplg, mc->channel,
791                         SNDRV_CHMAP_FR);
792 
793                 sm->max = mc->max;
794                 sm->min = mc->min;
795                 sm->invert = mc->invert;
796                 sm->platform_max = mc->platform_max;
797                 sm->dobj.index = tplg->index;
798                 sm->dobj.ops = tplg->ops;
799                 sm->dobj.type = SND_SOC_DOBJ_MIXER;
800                 INIT_LIST_HEAD(&sm->dobj.list);
801 
802                 /* map io handlers */
803                 err = soc_tplg_kcontrol_bind_io(&mc->hdr, &kc, tplg);
804                 if (err) {
805                         soc_control_err(tplg, &mc->hdr, mc->hdr.name);
806                         kfree(sm);
807                         continue;
808                 }
809 
810                 /* pass control to driver for optional further init */
811                 err = soc_tplg_init_kcontrol(tplg, &kc,
812                         (struct snd_soc_tplg_ctl_hdr *) mc);
813                 if (err < 0) {
814                         dev_err(tplg->dev, "ASoC: failed to init %s\n",
815                                 mc->hdr.name);
816                         kfree(sm);
817                         continue;
818                 }
819 
820                 /* create any TLV data */
821                 soc_tplg_create_tlv(tplg, &kc, &mc->hdr);
822 
823                 /* register control here */
824                 err = soc_tplg_add_kcontrol(tplg, &kc,
825                         &sm->dobj.control.kcontrol);
826                 if (err < 0) {
827                         dev_err(tplg->dev, "ASoC: failed to add %s\n",
828                                 mc->hdr.name);
829                         soc_tplg_free_tlv(tplg, &kc);
830                         kfree(sm);
831                         continue;
832                 }
833 
834                 list_add(&sm->dobj.list, &tplg->comp->dobj_list);
835         }
836 
837         return 0;
838 }
839 
840 static int soc_tplg_denum_create_texts(struct soc_enum *se,
841         struct snd_soc_tplg_enum_control *ec)
842 {
843         int i, ret;
844 
845         se->dobj.control.dtexts =
846                 kzalloc(sizeof(char *) * ec->items, GFP_KERNEL);
847         if (se->dobj.control.dtexts == NULL)
848                 return -ENOMEM;
849 
850         for (i = 0; i < ec->items; i++) {
851 
852                 if (strnlen(ec->texts[i], SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
853                         SNDRV_CTL_ELEM_ID_NAME_MAXLEN) {
854                         ret = -EINVAL;
855                         goto err;
856                 }
857 
858                 se->dobj.control.dtexts[i] = kstrdup(ec->texts[i], GFP_KERNEL);
859                 if (!se->dobj.control.dtexts[i]) {
860                         ret = -ENOMEM;
861                         goto err;
862                 }
863         }
864 
865         return 0;
866 
867 err:
868         for (--i; i >= 0; i--)
869                 kfree(se->dobj.control.dtexts[i]);
870         kfree(se->dobj.control.dtexts);
871         return ret;
872 }
873 
874 static int soc_tplg_denum_create_values(struct soc_enum *se,
875         struct snd_soc_tplg_enum_control *ec)
876 {
877         if (ec->items > sizeof(*ec->values))
878                 return -EINVAL;
879 
880         se->dobj.control.dvalues = kmemdup(ec->values,
881                                            ec->items * sizeof(u32),
882                                            GFP_KERNEL);
883         if (!se->dobj.control.dvalues)
884                 return -ENOMEM;
885 
886         return 0;
887 }
888 
889 static int soc_tplg_denum_create(struct soc_tplg *tplg, unsigned int count,
890         size_t size)
891 {
892         struct snd_soc_tplg_enum_control *ec;
893         struct soc_enum *se;
894         struct snd_kcontrol_new kc;
895         int i, ret, err;
896 
897         if (soc_tplg_check_elem_count(tplg,
898                 sizeof(struct snd_soc_tplg_enum_control),
899                 count, size, "enums")) {
900 
901                 dev_err(tplg->dev, "ASoC: invalid count %d for enum controls\n",
902                         count);
903                 return -EINVAL;
904         }
905 
906         for (i = 0; i < count; i++) {
907                 ec = (struct snd_soc_tplg_enum_control *)tplg->pos;
908                 tplg->pos += (sizeof(struct snd_soc_tplg_enum_control) +
909                         ec->priv.size);
910 
911                 /* validate kcontrol */
912                 if (strnlen(ec->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
913                         SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
914                         return -EINVAL;
915 
916                 se = kzalloc((sizeof(*se)), GFP_KERNEL);
917                 if (se == NULL)
918                         return -ENOMEM;
919 
920                 dev_dbg(tplg->dev, "ASoC: adding enum kcontrol %s size %d\n",
921                         ec->hdr.name, ec->items);
922 
923                 memset(&kc, 0, sizeof(kc));
924                 kc.name = ec->hdr.name;
925                 kc.private_value = (long)se;
926                 kc.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
927                 kc.access = ec->hdr.access;
928 
929                 se->reg = tplc_chan_get_reg(tplg, ec->channel, SNDRV_CHMAP_FL);
930                 se->shift_l = tplc_chan_get_shift(tplg, ec->channel,
931                         SNDRV_CHMAP_FL);
932                 se->shift_r = tplc_chan_get_shift(tplg, ec->channel,
933                         SNDRV_CHMAP_FL);
934 
935                 se->items = ec->items;
936                 se->mask = ec->mask;
937                 se->dobj.index = tplg->index;
938                 se->dobj.type = SND_SOC_DOBJ_ENUM;
939                 se->dobj.ops = tplg->ops;
940                 INIT_LIST_HEAD(&se->dobj.list);
941 
942                 switch (ec->hdr.ops.info) {
943                 case SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE:
944                 case SND_SOC_TPLG_CTL_ENUM_VALUE:
945                         err = soc_tplg_denum_create_values(se, ec);
946                         if (err < 0) {
947                                 dev_err(tplg->dev,
948                                         "ASoC: could not create values for %s\n",
949                                         ec->hdr.name);
950                                 kfree(se);
951                                 continue;
952                         }
953                         /* fall through and create texts */
954                 case SND_SOC_TPLG_CTL_ENUM:
955                 case SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE:
956                 case SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT:
957                         err = soc_tplg_denum_create_texts(se, ec);
958                         if (err < 0) {
959                                 dev_err(tplg->dev,
960                                         "ASoC: could not create texts for %s\n",
961                                         ec->hdr.name);
962                                 kfree(se);
963                                 continue;
964                         }
965                         break;
966                 default:
967                         dev_err(tplg->dev,
968                                 "ASoC: invalid enum control type %d for %s\n",
969                                 ec->hdr.ops.info, ec->hdr.name);
970                         kfree(se);
971                         continue;
972                 }
973 
974                 /* map io handlers */
975                 err = soc_tplg_kcontrol_bind_io(&ec->hdr, &kc, tplg);
976                 if (err) {
977                         soc_control_err(tplg, &ec->hdr, ec->hdr.name);
978                         kfree(se);
979                         continue;
980                 }
981 
982                 /* pass control to driver for optional further init */
983                 err = soc_tplg_init_kcontrol(tplg, &kc,
984                         (struct snd_soc_tplg_ctl_hdr *) ec);
985                 if (err < 0) {
986                         dev_err(tplg->dev, "ASoC: failed to init %s\n",
987                                 ec->hdr.name);
988                         kfree(se);
989                         continue;
990                 }
991 
992                 /* register control here */
993                 ret = soc_tplg_add_kcontrol(tplg,
994                         &kc, &se->dobj.control.kcontrol);
995                 if (ret < 0) {
996                         dev_err(tplg->dev, "ASoC: could not add kcontrol %s\n",
997                                 ec->hdr.name);
998                         kfree(se);
999                         continue;
1000                 }
1001 
1002                 list_add(&se->dobj.list, &tplg->comp->dobj_list);
1003         }
1004 
1005         return 0;
1006 }
1007 
1008 static int soc_tplg_kcontrol_elems_load(struct soc_tplg *tplg,
1009         struct snd_soc_tplg_hdr *hdr)
1010 {
1011         struct snd_soc_tplg_ctl_hdr *control_hdr;
1012         int i;
1013 
1014         if (tplg->pass != SOC_TPLG_PASS_MIXER) {
1015                 tplg->pos += hdr->size + hdr->payload_size;
1016                 return 0;
1017         }
1018 
1019         dev_dbg(tplg->dev, "ASoC: adding %d kcontrols at 0x%lx\n", hdr->count,
1020                 soc_tplg_get_offset(tplg));
1021 
1022         for (i = 0; i < hdr->count; i++) {
1023 
1024                 control_hdr = (struct snd_soc_tplg_ctl_hdr *)tplg->pos;
1025 
1026                 if (control_hdr->size != sizeof(*control_hdr)) {
1027                         dev_err(tplg->dev, "ASoC: invalid control size\n");
1028                         return -EINVAL;
1029                 }
1030 
1031                 switch (control_hdr->ops.info) {
1032                 case SND_SOC_TPLG_CTL_VOLSW:
1033                 case SND_SOC_TPLG_CTL_STROBE:
1034                 case SND_SOC_TPLG_CTL_VOLSW_SX:
1035                 case SND_SOC_TPLG_CTL_VOLSW_XR_SX:
1036                 case SND_SOC_TPLG_CTL_RANGE:
1037                 case SND_SOC_TPLG_DAPM_CTL_VOLSW:
1038                 case SND_SOC_TPLG_DAPM_CTL_PIN:
1039                         soc_tplg_dmixer_create(tplg, 1, hdr->payload_size);
1040                         break;
1041                 case SND_SOC_TPLG_CTL_ENUM:
1042                 case SND_SOC_TPLG_CTL_ENUM_VALUE:
1043                 case SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE:
1044                 case SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT:
1045                 case SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE:
1046                         soc_tplg_denum_create(tplg, 1, hdr->payload_size);
1047                         break;
1048                 case SND_SOC_TPLG_CTL_BYTES:
1049                         soc_tplg_dbytes_create(tplg, 1, hdr->payload_size);
1050                         break;
1051                 default:
1052                         soc_bind_err(tplg, control_hdr, i);
1053                         return -EINVAL;
1054                 }
1055         }
1056 
1057         return 0;
1058 }
1059 
1060 static int soc_tplg_dapm_graph_elems_load(struct soc_tplg *tplg,
1061         struct snd_soc_tplg_hdr *hdr)
1062 {
1063         struct snd_soc_dapm_context *dapm = &tplg->comp->dapm;
1064         struct snd_soc_dapm_route route;
1065         struct snd_soc_tplg_dapm_graph_elem *elem;
1066         int count = hdr->count, i;
1067 
1068         if (tplg->pass != SOC_TPLG_PASS_GRAPH) {
1069                 tplg->pos += hdr->size + hdr->payload_size;
1070                 return 0;
1071         }
1072 
1073         if (soc_tplg_check_elem_count(tplg,
1074                 sizeof(struct snd_soc_tplg_dapm_graph_elem),
1075                 count, hdr->payload_size, "graph")) {
1076 
1077                 dev_err(tplg->dev, "ASoC: invalid count %d for DAPM routes\n",
1078                         count);
1079                 return -EINVAL;
1080         }
1081 
1082         dev_dbg(tplg->dev, "ASoC: adding %d DAPM routes\n", count);
1083 
1084         for (i = 0; i < count; i++) {
1085                 elem = (struct snd_soc_tplg_dapm_graph_elem *)tplg->pos;
1086                 tplg->pos += sizeof(struct snd_soc_tplg_dapm_graph_elem);
1087 
1088                 /* validate routes */
1089                 if (strnlen(elem->source, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
1090                         SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
1091                         return -EINVAL;
1092                 if (strnlen(elem->sink, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
1093                         SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
1094                         return -EINVAL;
1095                 if (strnlen(elem->control, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
1096                         SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
1097                         return -EINVAL;
1098 
1099                 route.source = elem->source;
1100                 route.sink = elem->sink;
1101                 route.connected = NULL; /* set to NULL atm for tplg users */
1102                 if (strnlen(elem->control, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) == 0)
1103                         route.control = NULL;
1104                 else
1105                         route.control = elem->control;
1106 
1107                 /* add route, but keep going if some fail */
1108                 snd_soc_dapm_add_routes(dapm, &route, 1);
1109         }
1110 
1111         return 0;
1112 }
1113 
1114 static struct snd_kcontrol_new *soc_tplg_dapm_widget_dmixer_create(
1115         struct soc_tplg *tplg, int num_kcontrols)
1116 {
1117         struct snd_kcontrol_new *kc;
1118         struct soc_mixer_control *sm;
1119         struct snd_soc_tplg_mixer_control *mc;
1120         int i, err;
1121 
1122         kc = kcalloc(num_kcontrols, sizeof(*kc), GFP_KERNEL);
1123         if (kc == NULL)
1124                 return NULL;
1125 
1126         for (i = 0; i < num_kcontrols; i++) {
1127                 mc = (struct snd_soc_tplg_mixer_control *)tplg->pos;
1128                 sm = kzalloc(sizeof(*sm), GFP_KERNEL);
1129                 if (sm == NULL)
1130                         goto err;
1131 
1132                 tplg->pos += (sizeof(struct snd_soc_tplg_mixer_control) +
1133                         mc->priv.size);
1134 
1135                 /* validate kcontrol */
1136                 if (strnlen(mc->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
1137                         SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
1138                         goto err_str;
1139 
1140                 dev_dbg(tplg->dev, " adding DAPM widget mixer control %s at %d\n",
1141                         mc->hdr.name, i);
1142 
1143                 kc[i].name = mc->hdr.name;
1144                 kc[i].private_value = (long)sm;
1145                 kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1146                 kc[i].access = mc->hdr.access;
1147 
1148                 /* we only support FL/FR channel mapping atm */
1149                 sm->reg = tplc_chan_get_reg(tplg, mc->channel,
1150                         SNDRV_CHMAP_FL);
1151                 sm->rreg = tplc_chan_get_reg(tplg, mc->channel,
1152                         SNDRV_CHMAP_FR);
1153                 sm->shift = tplc_chan_get_shift(tplg, mc->channel,
1154                         SNDRV_CHMAP_FL);
1155                 sm->rshift = tplc_chan_get_shift(tplg, mc->channel,
1156                         SNDRV_CHMAP_FR);
1157 
1158                 sm->max = mc->max;
1159                 sm->min = mc->min;
1160                 sm->invert = mc->invert;
1161                 sm->platform_max = mc->platform_max;
1162                 sm->dobj.index = tplg->index;
1163                 INIT_LIST_HEAD(&sm->dobj.list);
1164 
1165                 /* map io handlers */
1166                 err = soc_tplg_kcontrol_bind_io(&mc->hdr, &kc[i], tplg);
1167                 if (err) {
1168                         soc_control_err(tplg, &mc->hdr, mc->hdr.name);
1169                         kfree(sm);
1170                         continue;
1171                 }
1172 
1173                 /* pass control to driver for optional further init */
1174                 err = soc_tplg_init_kcontrol(tplg, &kc[i],
1175                         (struct snd_soc_tplg_ctl_hdr *)mc);
1176                 if (err < 0) {
1177                         dev_err(tplg->dev, "ASoC: failed to init %s\n",
1178                                 mc->hdr.name);
1179                         kfree(sm);
1180                         continue;
1181                 }
1182         }
1183         return kc;
1184 
1185 err_str:
1186         kfree(sm);
1187 err:
1188         for (--i; i >= 0; i--)
1189                 kfree((void *)kc[i].private_value);
1190         kfree(kc);
1191         return NULL;
1192 }
1193 
1194 static struct snd_kcontrol_new *soc_tplg_dapm_widget_denum_create(
1195         struct soc_tplg *tplg)
1196 {
1197         struct snd_kcontrol_new *kc;
1198         struct snd_soc_tplg_enum_control *ec;
1199         struct soc_enum *se;
1200         int i, err;
1201 
1202         ec = (struct snd_soc_tplg_enum_control *)tplg->pos;
1203         tplg->pos += (sizeof(struct snd_soc_tplg_enum_control) +
1204                 ec->priv.size);
1205 
1206         /* validate kcontrol */
1207         if (strnlen(ec->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
1208                 SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
1209                 return NULL;
1210 
1211         kc = kzalloc(sizeof(*kc), GFP_KERNEL);
1212         if (kc == NULL)
1213                 return NULL;
1214 
1215         se = kzalloc(sizeof(*se), GFP_KERNEL);
1216         if (se == NULL)
1217                 goto err;
1218 
1219         dev_dbg(tplg->dev, " adding DAPM widget enum control %s\n",
1220                 ec->hdr.name);
1221 
1222         kc->name = ec->hdr.name;
1223         kc->private_value = (long)se;
1224         kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1225         kc->access = ec->hdr.access;
1226 
1227         /* we only support FL/FR channel mapping atm */
1228         se->reg = tplc_chan_get_reg(tplg, ec->channel, SNDRV_CHMAP_FL);
1229         se->shift_l = tplc_chan_get_shift(tplg, ec->channel, SNDRV_CHMAP_FL);
1230         se->shift_r = tplc_chan_get_shift(tplg, ec->channel, SNDRV_CHMAP_FR);
1231 
1232         se->items = ec->items;
1233         se->mask = ec->mask;
1234         se->dobj.index = tplg->index;
1235 
1236         switch (ec->hdr.ops.info) {
1237         case SND_SOC_TPLG_CTL_ENUM_VALUE:
1238         case SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE:
1239                 err = soc_tplg_denum_create_values(se, ec);
1240                 if (err < 0) {
1241                         dev_err(tplg->dev, "ASoC: could not create values for %s\n",
1242                                 ec->hdr.name);
1243                         goto err_se;
1244                 }
1245                 /* fall through to create texts */
1246         case SND_SOC_TPLG_CTL_ENUM:
1247         case SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE:
1248         case SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT:
1249                 err = soc_tplg_denum_create_texts(se, ec);
1250                 if (err < 0) {
1251                         dev_err(tplg->dev, "ASoC: could not create texts for %s\n",
1252                                 ec->hdr.name);
1253                         goto err_se;
1254                 }
1255                 break;
1256         default:
1257                 dev_err(tplg->dev, "ASoC: invalid enum control type %d for %s\n",
1258                         ec->hdr.ops.info, ec->hdr.name);
1259                 goto err_se;
1260         }
1261 
1262         /* map io handlers */
1263         err = soc_tplg_kcontrol_bind_io(&ec->hdr, kc, tplg);
1264         if (err) {
1265                 soc_control_err(tplg, &ec->hdr, ec->hdr.name);
1266                 goto err_se;
1267         }
1268 
1269         /* pass control to driver for optional further init */
1270         err = soc_tplg_init_kcontrol(tplg, kc,
1271                 (struct snd_soc_tplg_ctl_hdr *)ec);
1272         if (err < 0) {
1273                 dev_err(tplg->dev, "ASoC: failed to init %s\n",
1274                         ec->hdr.name);
1275                 goto err_se;
1276         }
1277 
1278         return kc;
1279 
1280 err_se:
1281         /* free values and texts */
1282         kfree(se->dobj.control.dvalues);
1283         for (i = 0; i < ec->items; i++)
1284                 kfree(se->dobj.control.dtexts[i]);
1285 
1286         kfree(se);
1287 err:
1288         kfree(kc);
1289 
1290         return NULL;
1291 }
1292 
1293 static struct snd_kcontrol_new *soc_tplg_dapm_widget_dbytes_create(
1294         struct soc_tplg *tplg, int count)
1295 {
1296         struct snd_soc_tplg_bytes_control *be;
1297         struct soc_bytes_ext  *sbe;
1298         struct snd_kcontrol_new *kc;
1299         int i, err;
1300 
1301         kc = kcalloc(count, sizeof(*kc), GFP_KERNEL);
1302         if (!kc)
1303                 return NULL;
1304 
1305         for (i = 0; i < count; i++) {
1306                 be = (struct snd_soc_tplg_bytes_control *)tplg->pos;
1307 
1308                 /* validate kcontrol */
1309                 if (strnlen(be->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
1310                         SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
1311                         goto err;
1312 
1313                 sbe = kzalloc(sizeof(*sbe), GFP_KERNEL);
1314                 if (sbe == NULL)
1315                         goto err;
1316 
1317                 tplg->pos += (sizeof(struct snd_soc_tplg_bytes_control) +
1318                         be->priv.size);
1319 
1320                 dev_dbg(tplg->dev,
1321                         "ASoC: adding bytes kcontrol %s with access 0x%x\n",
1322                         be->hdr.name, be->hdr.access);
1323 
1324                 kc[i].name = be->hdr.name;
1325                 kc[i].private_value = (long)sbe;
1326                 kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1327                 kc[i].access = be->hdr.access;
1328 
1329                 sbe->max = be->max;
1330                 INIT_LIST_HEAD(&sbe->dobj.list);
1331 
1332                 /* map standard io handlers and check for external handlers */
1333                 err = soc_tplg_kcontrol_bind_io(&be->hdr, &kc[i], tplg);
1334                 if (err) {
1335                         soc_control_err(tplg, &be->hdr, be->hdr.name);
1336                         kfree(sbe);
1337                         continue;
1338                 }
1339 
1340                 /* pass control to driver for optional further init */
1341                 err = soc_tplg_init_kcontrol(tplg, &kc[i],
1342                         (struct snd_soc_tplg_ctl_hdr *)be);
1343                 if (err < 0) {
1344                         dev_err(tplg->dev, "ASoC: failed to init %s\n",
1345                                 be->hdr.name);
1346                         kfree(sbe);
1347                         continue;
1348                 }
1349         }
1350 
1351         return kc;
1352 
1353 err:
1354         for (--i; i >= 0; i--)
1355                 kfree((void *)kc[i].private_value);
1356 
1357         kfree(kc);
1358         return NULL;
1359 }
1360 
1361 static int soc_tplg_dapm_widget_create(struct soc_tplg *tplg,
1362         struct snd_soc_tplg_dapm_widget *w)
1363 {
1364         struct snd_soc_dapm_context *dapm = &tplg->comp->dapm;
1365         struct snd_soc_dapm_widget template, *widget;
1366         struct snd_soc_tplg_ctl_hdr *control_hdr;
1367         struct snd_soc_card *card = tplg->comp->card;
1368         int ret = 0;
1369 
1370         if (strnlen(w->name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
1371                 SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
1372                 return -EINVAL;
1373         if (strnlen(w->sname, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
1374                 SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
1375                 return -EINVAL;
1376 
1377         dev_dbg(tplg->dev, "ASoC: creating DAPM widget %s id %d\n",
1378                 w->name, w->id);
1379 
1380         memset(&template, 0, sizeof(template));
1381 
1382         /* map user to kernel widget ID */
1383         template.id = get_widget_id(w->id);
1384         if (template.id < 0)
1385                 return template.id;
1386 
1387         template.name = kstrdup(w->name, GFP_KERNEL);
1388         if (!template.name)
1389                 return -ENOMEM;
1390         template.sname = kstrdup(w->sname, GFP_KERNEL);
1391         if (!template.sname) {
1392                 ret = -ENOMEM;
1393                 goto err;
1394         }
1395         template.reg = w->reg;
1396         template.shift = w->shift;
1397         template.mask = w->mask;
1398         template.subseq = w->subseq;
1399         template.on_val = w->invert ? 0 : 1;
1400         template.off_val = w->invert ? 1 : 0;
1401         template.ignore_suspend = w->ignore_suspend;
1402         template.event_flags = w->event_flags;
1403         template.dobj.index = tplg->index;
1404 
1405         tplg->pos +=
1406                 (sizeof(struct snd_soc_tplg_dapm_widget) + w->priv.size);
1407         if (w->num_kcontrols == 0) {
1408                 template.num_kcontrols = 0;
1409                 goto widget;
1410         }
1411 
1412         control_hdr = (struct snd_soc_tplg_ctl_hdr *)tplg->pos;
1413         dev_dbg(tplg->dev, "ASoC: template %s has %d controls of type %x\n",
1414                 w->name, w->num_kcontrols, control_hdr->type);
1415 
1416         switch (control_hdr->ops.info) {
1417         case SND_SOC_TPLG_CTL_VOLSW:
1418         case SND_SOC_TPLG_CTL_STROBE:
1419         case SND_SOC_TPLG_CTL_VOLSW_SX:
1420         case SND_SOC_TPLG_CTL_VOLSW_XR_SX:
1421         case SND_SOC_TPLG_CTL_RANGE:
1422         case SND_SOC_TPLG_DAPM_CTL_VOLSW:
1423                 template.num_kcontrols = w->num_kcontrols;
1424                 template.kcontrol_news =
1425                         soc_tplg_dapm_widget_dmixer_create(tplg,
1426                         template.num_kcontrols);
1427                 if (!template.kcontrol_news) {
1428                         ret = -ENOMEM;
1429                         goto hdr_err;
1430                 }
1431                 break;
1432         case SND_SOC_TPLG_CTL_ENUM:
1433         case SND_SOC_TPLG_CTL_ENUM_VALUE:
1434         case SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE:
1435         case SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT:
1436         case SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE:
1437                 template.dobj.widget.kcontrol_enum = 1;
1438                 template.num_kcontrols = 1;
1439                 template.kcontrol_news =
1440                         soc_tplg_dapm_widget_denum_create(tplg);
1441                 if (!template.kcontrol_news) {
1442                         ret = -ENOMEM;
1443                         goto hdr_err;
1444                 }
1445                 break;
1446         case SND_SOC_TPLG_CTL_BYTES:
1447                 template.num_kcontrols = w->num_kcontrols;
1448                 template.kcontrol_news =
1449                         soc_tplg_dapm_widget_dbytes_create(tplg,
1450                                 template.num_kcontrols);
1451                 if (!template.kcontrol_news) {
1452                         ret = -ENOMEM;
1453                         goto hdr_err;
1454                 }
1455                 break;
1456         default:
1457                 dev_err(tplg->dev, "ASoC: invalid widget control type %d:%d:%d\n",
1458                         control_hdr->ops.get, control_hdr->ops.put,
1459                         control_hdr->ops.info);
1460                 ret = -EINVAL;
1461                 goto hdr_err;
1462         }
1463 
1464 widget:
1465         ret = soc_tplg_widget_load(tplg, &template, w);
1466         if (ret < 0)
1467                 goto hdr_err;
1468 
1469         /* card dapm mutex is held by the core if we are loading topology
1470          * data during sound card init. */
1471         if (card->instantiated)
1472                 widget = snd_soc_dapm_new_control(dapm, &template);
1473         else
1474                 widget = snd_soc_dapm_new_control_unlocked(dapm, &template);
1475         if (widget == NULL) {
1476                 dev_err(tplg->dev, "ASoC: failed to create widget %s controls\n",
1477                         w->name);
1478                 goto hdr_err;
1479         }
1480 
1481         widget->dobj.type = SND_SOC_DOBJ_WIDGET;
1482         widget->dobj.ops = tplg->ops;
1483         widget->dobj.index = tplg->index;
1484         kfree(template.sname);
1485         kfree(template.name);
1486         list_add(&widget->dobj.list, &tplg->comp->dobj_list);
1487         return 0;
1488 
1489 hdr_err:
1490         kfree(template.sname);
1491 err:
1492         kfree(template.name);
1493         return ret;
1494 }
1495 
1496 static int soc_tplg_dapm_widget_elems_load(struct soc_tplg *tplg,
1497         struct snd_soc_tplg_hdr *hdr)
1498 {
1499         struct snd_soc_tplg_dapm_widget *widget;
1500         int ret, count = hdr->count, i;
1501 
1502         if (tplg->pass != SOC_TPLG_PASS_WIDGET)
1503                 return 0;
1504 
1505         dev_dbg(tplg->dev, "ASoC: adding %d DAPM widgets\n", count);
1506 
1507         for (i = 0; i < count; i++) {
1508                 widget = (struct snd_soc_tplg_dapm_widget *) tplg->pos;
1509                 if (widget->size != sizeof(*widget)) {
1510                         dev_err(tplg->dev, "ASoC: invalid widget size\n");
1511                         return -EINVAL;
1512                 }
1513 
1514                 ret = soc_tplg_dapm_widget_create(tplg, widget);
1515                 if (ret < 0) {
1516                         dev_err(tplg->dev, "ASoC: failed to load widget %s\n",
1517                                 widget->name);
1518                         return ret;
1519                 }
1520         }
1521 
1522         return 0;
1523 }
1524 
1525 static int soc_tplg_dapm_complete(struct soc_tplg *tplg)
1526 {
1527         struct snd_soc_card *card = tplg->comp->card;
1528         int ret;
1529 
1530         /* Card might not have been registered at this point.
1531          * If so, just return success.
1532         */
1533         if (!card || !card->instantiated) {
1534                 dev_warn(tplg->dev, "ASoC: Parent card not yet available,"
1535                                 "Do not add new widgets now\n");
1536                 return 0;
1537         }
1538 
1539         ret = snd_soc_dapm_new_widgets(card);
1540         if (ret < 0)
1541                 dev_err(tplg->dev, "ASoC: failed to create new widgets %d\n",
1542                         ret);
1543 
1544         return 0;
1545 }
1546 
1547 static void set_stream_info(struct snd_soc_pcm_stream *stream,
1548         struct snd_soc_tplg_stream_caps *caps)
1549 {
1550         stream->stream_name = kstrdup(caps->name, GFP_KERNEL);
1551         stream->channels_min = caps->channels_min;
1552         stream->channels_max = caps->channels_max;
1553         stream->rates = caps->rates;
1554         stream->rate_min = caps->rate_min;
1555         stream->rate_max = caps->rate_max;
1556         stream->formats = caps->formats;
1557 }
1558 
1559 static int soc_tplg_dai_create(struct soc_tplg *tplg,
1560         struct snd_soc_tplg_pcm *pcm)
1561 {
1562         struct snd_soc_dai_driver *dai_drv;
1563         struct snd_soc_pcm_stream *stream;
1564         struct snd_soc_tplg_stream_caps *caps;
1565         int ret;
1566 
1567         dai_drv = kzalloc(sizeof(struct snd_soc_dai_driver), GFP_KERNEL);
1568         if (dai_drv == NULL)
1569                 return -ENOMEM;
1570 
1571         dai_drv->name = pcm->dai_name;
1572         dai_drv->id = pcm->dai_id;
1573 
1574         if (pcm->playback) {
1575                 stream = &dai_drv->playback;
1576                 caps = &pcm->caps[SND_SOC_TPLG_STREAM_PLAYBACK];
1577                 set_stream_info(stream, caps);
1578         }
1579 
1580         if (pcm->capture) {
1581                 stream = &dai_drv->capture;
1582                 caps = &pcm->caps[SND_SOC_TPLG_STREAM_CAPTURE];
1583                 set_stream_info(stream, caps);
1584         }
1585 
1586         /* pass control to component driver for optional further init */
1587         ret = soc_tplg_dai_load(tplg, dai_drv);
1588         if (ret < 0) {
1589                 dev_err(tplg->comp->dev, "ASoC: DAI loading failed\n");
1590                 kfree(dai_drv);
1591                 return ret;
1592         }
1593 
1594         dai_drv->dobj.index = tplg->index;
1595         dai_drv->dobj.ops = tplg->ops;
1596         dai_drv->dobj.type = SND_SOC_DOBJ_PCM;
1597         list_add(&dai_drv->dobj.list, &tplg->comp->dobj_list);
1598 
1599         /* register the DAI to the component */
1600         return snd_soc_register_dai(tplg->comp, dai_drv);
1601 }
1602 
1603 /* create the FE DAI link */
1604 static int soc_tplg_link_create(struct soc_tplg *tplg,
1605         struct snd_soc_tplg_pcm *pcm)
1606 {
1607         struct snd_soc_dai_link *link;
1608         int ret;
1609 
1610         link = kzalloc(sizeof(struct snd_soc_dai_link), GFP_KERNEL);
1611         if (link == NULL)
1612                 return -ENOMEM;
1613 
1614         link->name = pcm->pcm_name;
1615         link->stream_name = pcm->pcm_name;
1616         link->id = pcm->pcm_id;
1617 
1618         link->cpu_dai_name = pcm->dai_name;
1619         link->codec_name = "snd-soc-dummy";
1620         link->codec_dai_name = "snd-soc-dummy-dai";
1621 
1622         /* enable DPCM */
1623         link->dynamic = 1;
1624         link->dpcm_playback = pcm->playback;
1625         link->dpcm_capture = pcm->capture;
1626 
1627         /* pass control to component driver for optional further init */
1628         ret = soc_tplg_dai_link_load(tplg, link);
1629         if (ret < 0) {
1630                 dev_err(tplg->comp->dev, "ASoC: FE link loading failed\n");
1631                 kfree(link);
1632                 return ret;
1633         }
1634 
1635         link->dobj.index = tplg->index;
1636         link->dobj.ops = tplg->ops;
1637         link->dobj.type = SND_SOC_DOBJ_DAI_LINK;
1638         list_add(&link->dobj.list, &tplg->comp->dobj_list);
1639 
1640         snd_soc_add_dai_link(tplg->comp->card, link);
1641         return 0;
1642 }
1643 
1644 /* create a FE DAI and DAI link from the PCM object */
1645 static int soc_tplg_pcm_create(struct soc_tplg *tplg,
1646         struct snd_soc_tplg_pcm *pcm)
1647 {
1648         int ret;
1649 
1650         ret = soc_tplg_dai_create(tplg, pcm);
1651         if (ret < 0)
1652                 return ret;
1653 
1654         return  soc_tplg_link_create(tplg, pcm);
1655 }
1656 
1657 static int soc_tplg_pcm_elems_load(struct soc_tplg *tplg,
1658         struct snd_soc_tplg_hdr *hdr)
1659 {
1660         struct snd_soc_tplg_pcm *pcm;
1661         int count = hdr->count;
1662         int i;
1663 
1664         if (tplg->pass != SOC_TPLG_PASS_PCM_DAI)
1665                 return 0;
1666 
1667         if (soc_tplg_check_elem_count(tplg,
1668                 sizeof(struct snd_soc_tplg_pcm), count,
1669                 hdr->payload_size, "PCM DAI")) {
1670                 dev_err(tplg->dev, "ASoC: invalid count %d for PCM DAI elems\n",
1671                         count);
1672                 return -EINVAL;
1673         }
1674 
1675         /* create the FE DAIs and DAI links */
1676         pcm = (struct snd_soc_tplg_pcm *)tplg->pos;
1677         for (i = 0; i < count; i++) {
1678                 if (pcm->size != sizeof(*pcm)) {
1679                         dev_err(tplg->dev, "ASoC: invalid pcm size\n");
1680                         return -EINVAL;
1681                 }
1682 
1683                 soc_tplg_pcm_create(tplg, pcm);
1684                 pcm++;
1685         }
1686 
1687         dev_dbg(tplg->dev, "ASoC: adding %d PCM DAIs\n", count);
1688         tplg->pos += sizeof(struct snd_soc_tplg_pcm) * count;
1689 
1690         return 0;
1691 }
1692 
1693 static int soc_tplg_manifest_load(struct soc_tplg *tplg,
1694         struct snd_soc_tplg_hdr *hdr)
1695 {
1696         struct snd_soc_tplg_manifest *manifest;
1697 
1698         if (tplg->pass != SOC_TPLG_PASS_MANIFEST)
1699                 return 0;
1700 
1701         manifest = (struct snd_soc_tplg_manifest *)tplg->pos;
1702         if (manifest->size != sizeof(*manifest)) {
1703                 dev_err(tplg->dev, "ASoC: invalid manifest size\n");
1704                 return -EINVAL;
1705         }
1706 
1707         tplg->pos += sizeof(struct snd_soc_tplg_manifest);
1708 
1709         if (tplg->comp && tplg->ops && tplg->ops->manifest)
1710                 return tplg->ops->manifest(tplg->comp, manifest);
1711 
1712         dev_err(tplg->dev, "ASoC: Firmware manifest not supported\n");
1713         return 0;
1714 }
1715 
1716 /* validate header magic, size and type */
1717 static int soc_valid_header(struct soc_tplg *tplg,
1718         struct snd_soc_tplg_hdr *hdr)
1719 {
1720         if (soc_tplg_get_hdr_offset(tplg) >= tplg->fw->size)
1721                 return 0;
1722 
1723         if (hdr->size != sizeof(*hdr)) {
1724                 dev_err(tplg->dev,
1725                         "ASoC: invalid header size for type %d at offset 0x%lx size 0x%zx.\n",
1726                         hdr->type, soc_tplg_get_hdr_offset(tplg),
1727                         tplg->fw->size);
1728                 return -EINVAL;
1729         }
1730 
1731         /* big endian firmware objects not supported atm */
1732         if (hdr->magic == cpu_to_be32(SND_SOC_TPLG_MAGIC)) {
1733                 dev_err(tplg->dev,
1734                         "ASoC: pass %d big endian not supported header got %x at offset 0x%lx size 0x%zx.\n",
1735                         tplg->pass, hdr->magic,
1736                         soc_tplg_get_hdr_offset(tplg), tplg->fw->size);
1737                 return -EINVAL;
1738         }
1739 
1740         if (hdr->magic != SND_SOC_TPLG_MAGIC) {
1741                 dev_err(tplg->dev,
1742                         "ASoC: pass %d does not have a valid header got %x at offset 0x%lx size 0x%zx.\n",
1743                         tplg->pass, hdr->magic,
1744                         soc_tplg_get_hdr_offset(tplg), tplg->fw->size);
1745                 return -EINVAL;
1746         }
1747 
1748         if (hdr->abi != SND_SOC_TPLG_ABI_VERSION) {
1749                 dev_err(tplg->dev,
1750                         "ASoC: pass %d invalid ABI version got 0x%x need 0x%x at offset 0x%lx size 0x%zx.\n",
1751                         tplg->pass, hdr->abi,
1752                         SND_SOC_TPLG_ABI_VERSION, soc_tplg_get_hdr_offset(tplg),
1753                         tplg->fw->size);
1754                 return -EINVAL;
1755         }
1756 
1757         if (hdr->payload_size == 0) {
1758                 dev_err(tplg->dev, "ASoC: header has 0 size at offset 0x%lx.\n",
1759                         soc_tplg_get_hdr_offset(tplg));
1760                 return -EINVAL;
1761         }
1762 
1763         if (tplg->pass == hdr->type)
1764                 dev_dbg(tplg->dev,
1765                         "ASoC: Got 0x%x bytes of type %d version %d vendor %d at pass %d\n",
1766                         hdr->payload_size, hdr->type, hdr->version,
1767                         hdr->vendor_type, tplg->pass);
1768 
1769         return 1;
1770 }
1771 
1772 /* check header type and call appropriate handler */
1773 static int soc_tplg_load_header(struct soc_tplg *tplg,
1774         struct snd_soc_tplg_hdr *hdr)
1775 {
1776         tplg->pos = tplg->hdr_pos + sizeof(struct snd_soc_tplg_hdr);
1777 
1778         /* check for matching ID */
1779         if (hdr->index != tplg->req_index &&
1780                 hdr->index != SND_SOC_TPLG_INDEX_ALL)
1781                 return 0;
1782 
1783         tplg->index = hdr->index;
1784 
1785         switch (hdr->type) {
1786         case SND_SOC_TPLG_TYPE_MIXER:
1787         case SND_SOC_TPLG_TYPE_ENUM:
1788         case SND_SOC_TPLG_TYPE_BYTES:
1789                 return soc_tplg_kcontrol_elems_load(tplg, hdr);
1790         case SND_SOC_TPLG_TYPE_DAPM_GRAPH:
1791                 return soc_tplg_dapm_graph_elems_load(tplg, hdr);
1792         case SND_SOC_TPLG_TYPE_DAPM_WIDGET:
1793                 return soc_tplg_dapm_widget_elems_load(tplg, hdr);
1794         case SND_SOC_TPLG_TYPE_PCM:
1795                 return soc_tplg_pcm_elems_load(tplg, hdr);
1796         case SND_SOC_TPLG_TYPE_MANIFEST:
1797                 return soc_tplg_manifest_load(tplg, hdr);
1798         default:
1799                 /* bespoke vendor data object */
1800                 return soc_tplg_vendor_load(tplg, hdr);
1801         }
1802 
1803         return 0;
1804 }
1805 
1806 /* process the topology file headers */
1807 static int soc_tplg_process_headers(struct soc_tplg *tplg)
1808 {
1809         struct snd_soc_tplg_hdr *hdr;
1810         int ret;
1811 
1812         tplg->pass = SOC_TPLG_PASS_START;
1813 
1814         /* process the header types from start to end */
1815         while (tplg->pass <= SOC_TPLG_PASS_END) {
1816 
1817                 tplg->hdr_pos = tplg->fw->data;
1818                 hdr = (struct snd_soc_tplg_hdr *)tplg->hdr_pos;
1819 
1820                 while (!soc_tplg_is_eof(tplg)) {
1821 
1822                         /* make sure header is valid before loading */
1823                         ret = soc_valid_header(tplg, hdr);
1824                         if (ret < 0)
1825                                 return ret;
1826                         else if (ret == 0)
1827                                 break;
1828 
1829                         /* load the header object */
1830                         ret = soc_tplg_load_header(tplg, hdr);
1831                         if (ret < 0)
1832                                 return ret;
1833 
1834                         /* goto next header */
1835                         tplg->hdr_pos += hdr->payload_size +
1836                                 sizeof(struct snd_soc_tplg_hdr);
1837                         hdr = (struct snd_soc_tplg_hdr *)tplg->hdr_pos;
1838                 }
1839 
1840                 /* next data type pass */
1841                 tplg->pass++;
1842         }
1843 
1844         /* signal DAPM we are complete */
1845         ret = soc_tplg_dapm_complete(tplg);
1846         if (ret < 0)
1847                 dev_err(tplg->dev,
1848                         "ASoC: failed to initialise DAPM from Firmware\n");
1849 
1850         return ret;
1851 }
1852 
1853 static int soc_tplg_load(struct soc_tplg *tplg)
1854 {
1855         int ret;
1856 
1857         ret = soc_tplg_process_headers(tplg);
1858         if (ret == 0)
1859                 soc_tplg_complete(tplg);
1860 
1861         return ret;
1862 }
1863 
1864 /* load audio component topology from "firmware" file */
1865 int snd_soc_tplg_component_load(struct snd_soc_component *comp,
1866         struct snd_soc_tplg_ops *ops, const struct firmware *fw, u32 id)
1867 {
1868         struct soc_tplg tplg;
1869 
1870         /* setup parsing context */
1871         memset(&tplg, 0, sizeof(tplg));
1872         tplg.fw = fw;
1873         tplg.dev = comp->dev;
1874         tplg.comp = comp;
1875         tplg.ops = ops;
1876         tplg.req_index = id;
1877         tplg.io_ops = ops->io_ops;
1878         tplg.io_ops_count = ops->io_ops_count;
1879         tplg.bytes_ext_ops = ops->bytes_ext_ops;
1880         tplg.bytes_ext_ops_count = ops->bytes_ext_ops_count;
1881 
1882         return soc_tplg_load(&tplg);
1883 }
1884 EXPORT_SYMBOL_GPL(snd_soc_tplg_component_load);
1885 
1886 /* remove this dynamic widget */
1887 void snd_soc_tplg_widget_remove(struct snd_soc_dapm_widget *w)
1888 {
1889         /* make sure we are a widget */
1890         if (w->dobj.type != SND_SOC_DOBJ_WIDGET)
1891                 return;
1892 
1893         remove_widget(w->dapm->component, &w->dobj, SOC_TPLG_PASS_WIDGET);
1894 }
1895 EXPORT_SYMBOL_GPL(snd_soc_tplg_widget_remove);
1896 
1897 /* remove all dynamic widgets from this DAPM context */
1898 void snd_soc_tplg_widget_remove_all(struct snd_soc_dapm_context *dapm,
1899         u32 index)
1900 {
1901         struct snd_soc_dapm_widget *w, *next_w;
1902 
1903         list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
1904 
1905                 /* make sure we are a widget with correct context */
1906                 if (w->dobj.type != SND_SOC_DOBJ_WIDGET || w->dapm != dapm)
1907                         continue;
1908 
1909                 /* match ID */
1910                 if (w->dobj.index != index &&
1911                         w->dobj.index != SND_SOC_TPLG_INDEX_ALL)
1912                         continue;
1913                 /* check and free and dynamic widget kcontrols */
1914                 snd_soc_tplg_widget_remove(w);
1915                 snd_soc_dapm_free_widget(w);
1916         }
1917         snd_soc_dapm_reset_cache(dapm);
1918 }
1919 EXPORT_SYMBOL_GPL(snd_soc_tplg_widget_remove_all);
1920 
1921 /* remove dynamic controls from the component driver */
1922 int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index)
1923 {
1924         struct snd_soc_dobj *dobj, *next_dobj;
1925         int pass = SOC_TPLG_PASS_END;
1926 
1927         /* process the header types from end to start */
1928         while (pass >= SOC_TPLG_PASS_START) {
1929 
1930                 /* remove mixer controls */
1931                 list_for_each_entry_safe(dobj, next_dobj, &comp->dobj_list,
1932                         list) {
1933 
1934                         /* match index */
1935                         if (dobj->index != index &&
1936                                 dobj->index != SND_SOC_TPLG_INDEX_ALL)
1937                                 continue;
1938 
1939                         switch (dobj->type) {
1940                         case SND_SOC_DOBJ_MIXER:
1941                                 remove_mixer(comp, dobj, pass);
1942                                 break;
1943                         case SND_SOC_DOBJ_ENUM:
1944                                 remove_enum(comp, dobj, pass);
1945                                 break;
1946                         case SND_SOC_DOBJ_BYTES:
1947                                 remove_bytes(comp, dobj, pass);
1948                                 break;
1949                         case SND_SOC_DOBJ_WIDGET:
1950                                 remove_widget(comp, dobj, pass);
1951                                 break;
1952                         case SND_SOC_DOBJ_PCM:
1953                                 remove_dai(comp, dobj, pass);
1954                                 break;
1955                         case SND_SOC_DOBJ_DAI_LINK:
1956                                 remove_link(comp, dobj, pass);
1957                                 break;
1958                         default:
1959                                 dev_err(comp->dev, "ASoC: invalid component type %d for removal\n",
1960                                         dobj->type);
1961                                 break;
1962                         }
1963                 }
1964                 pass--;
1965         }
1966 
1967         /* let caller know if FW can be freed when no objects are left */
1968         return !list_empty(&comp->dobj_list);
1969 }
1970 EXPORT_SYMBOL_GPL(snd_soc_tplg_component_remove);
1971 

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