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linux_dsm_epyc7002/sound/soc/soc-topology.c
Arnd Bergmann dd5abb7420 ASoC: topology: avoid uninitialized kcontrol_type 
When num_kcontrols is zero, widget->dobj.widget.kcontrol_type
gets set to an uninitialized local variable:

sound/soc/soc-topology.c: In function 'soc_tplg_dapm_widget_create':
sound/soc/soc-topology.c:1566:36: error: 'kcontrol_type' may be used uninitialized in this function [-Werror=maybe-uninitialized]

I could not figure out which of the valid types would be appropriate
here, so this sets it to '0', which is invalid but at least well-defined
here. There is probably a better way to address the issue.

Fixes: eea3dd4f12 ("ASoC: topology: Only free TLV for volume mixers of a widget")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-12-12 15:43:02 +00:00

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/*
* soc-topology.c -- ALSA SoC Topology
*
* Copyright (C) 2012 Texas Instruments Inc.
* Copyright (C) 2015 Intel Corporation.
*
* Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com>
* K, Mythri P <mythri.p.k@intel.com>
* Prusty, Subhransu S <subhransu.s.prusty@intel.com>
* B, Jayachandran <jayachandran.b@intel.com>
* Abdullah, Omair M <omair.m.abdullah@intel.com>
* Jin, Yao <yao.jin@intel.com>
* Lin, Mengdong <mengdong.lin@intel.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* Add support to read audio firmware topology alongside firmware text. The
* topology data can contain kcontrols, DAPM graphs, widgets, DAIs, DAI links,
* equalizers, firmware, coefficients etc.
*
* This file only manages the core ALSA and ASoC components, all other bespoke
* firmware topology data is passed to component drivers for bespoke handling.
*/
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/list.h>
#include <linux/firmware.h>
#include <linux/slab.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/soc-topology.h>
#include <sound/tlv.h>
/*
* We make several passes over the data (since it wont necessarily be ordered)
* and process objects in the following order. This guarantees the component
* drivers will be ready with any vendor data before the mixers and DAPM objects
* are loaded (that may make use of the vendor data).
*/
#define SOC_TPLG_PASS_MANIFEST 0
#define SOC_TPLG_PASS_VENDOR 1
#define SOC_TPLG_PASS_MIXER 2
#define SOC_TPLG_PASS_WIDGET 3
#define SOC_TPLG_PASS_PCM_DAI 4
#define SOC_TPLG_PASS_GRAPH 5
#define SOC_TPLG_PASS_PINS 6
#define SOC_TPLG_PASS_BE_DAI 7
#define SOC_TPLG_PASS_LINK 8
#define SOC_TPLG_PASS_START SOC_TPLG_PASS_MANIFEST
#define SOC_TPLG_PASS_END SOC_TPLG_PASS_LINK
/*
* Old version of ABI structs, supported for backward compatibility.
*/
/* Manifest v4 */
struct snd_soc_tplg_manifest_v4 {
__le32 size; /* in bytes of this structure */
__le32 control_elems; /* number of control elements */
__le32 widget_elems; /* number of widget elements */
__le32 graph_elems; /* number of graph elements */
__le32 pcm_elems; /* number of PCM elements */
__le32 dai_link_elems; /* number of DAI link elements */
struct snd_soc_tplg_private priv;
} __packed;
/* Stream Capabilities v4 */
struct snd_soc_tplg_stream_caps_v4 {
__le32 size; /* in bytes of this structure */
char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
__le64 formats; /* supported formats SNDRV_PCM_FMTBIT_* */
__le32 rates; /* supported rates SNDRV_PCM_RATE_* */
__le32 rate_min; /* min rate */
__le32 rate_max; /* max rate */
__le32 channels_min; /* min channels */
__le32 channels_max; /* max channels */
__le32 periods_min; /* min number of periods */
__le32 periods_max; /* max number of periods */
__le32 period_size_min; /* min period size bytes */
__le32 period_size_max; /* max period size bytes */
__le32 buffer_size_min; /* min buffer size bytes */
__le32 buffer_size_max; /* max buffer size bytes */
} __packed;
/* PCM v4 */
struct snd_soc_tplg_pcm_v4 {
__le32 size; /* in bytes of this structure */
char pcm_name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
char dai_name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
__le32 pcm_id; /* unique ID - used to match with DAI link */
__le32 dai_id; /* unique ID - used to match */
__le32 playback; /* supports playback mode */
__le32 capture; /* supports capture mode */
__le32 compress; /* 1 = compressed; 0 = PCM */
struct snd_soc_tplg_stream stream[SND_SOC_TPLG_STREAM_CONFIG_MAX]; /* for DAI link */
__le32 num_streams; /* number of streams */
struct snd_soc_tplg_stream_caps_v4 caps[2]; /* playback and capture for DAI */
} __packed;
/* Physical link config v4 */
struct snd_soc_tplg_link_config_v4 {
__le32 size; /* in bytes of this structure */
__le32 id; /* unique ID - used to match */
struct snd_soc_tplg_stream stream[SND_SOC_TPLG_STREAM_CONFIG_MAX]; /* supported configs playback and captrure */
__le32 num_streams; /* number of streams */
} __packed;
/* topology context */
struct soc_tplg {
const struct firmware *fw;
/* runtime FW parsing */
const u8 *pos; /* read postion */
const u8 *hdr_pos; /* header position */
unsigned int pass; /* pass number */
/* component caller */
struct device *dev;
struct snd_soc_component *comp;
u32 index; /* current block index */
u32 req_index; /* required index, only loaded/free matching blocks */
/* vendor specific kcontrol operations */
const struct snd_soc_tplg_kcontrol_ops *io_ops;
int io_ops_count;
/* vendor specific bytes ext handlers, for TLV bytes controls */
const struct snd_soc_tplg_bytes_ext_ops *bytes_ext_ops;
int bytes_ext_ops_count;
/* optional fw loading callbacks to component drivers */
struct snd_soc_tplg_ops *ops;
};
static int soc_tplg_process_headers(struct soc_tplg *tplg);
static void soc_tplg_complete(struct soc_tplg *tplg);
struct snd_soc_dapm_widget *
snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
const struct snd_soc_dapm_widget *widget);
struct snd_soc_dapm_widget *
snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
const struct snd_soc_dapm_widget *widget);
/* check we dont overflow the data for this control chunk */
static int soc_tplg_check_elem_count(struct soc_tplg *tplg, size_t elem_size,
unsigned int count, size_t bytes, const char *elem_type)
{
const u8 *end = tplg->pos + elem_size * count;
if (end > tplg->fw->data + tplg->fw->size) {
dev_err(tplg->dev, "ASoC: %s overflow end of data\n",
elem_type);
return -EINVAL;
}
/* check there is enough room in chunk for control.
extra bytes at the end of control are for vendor data here */
if (elem_size * count > bytes) {
dev_err(tplg->dev,
"ASoC: %s count %d of size %zu is bigger than chunk %zu\n",
elem_type, count, elem_size, bytes);
return -EINVAL;
}
return 0;
}
static inline int soc_tplg_is_eof(struct soc_tplg *tplg)
{
const u8 *end = tplg->hdr_pos;
if (end >= tplg->fw->data + tplg->fw->size)
return 1;
return 0;
}
static inline unsigned long soc_tplg_get_hdr_offset(struct soc_tplg *tplg)
{
return (unsigned long)(tplg->hdr_pos - tplg->fw->data);
}
static inline unsigned long soc_tplg_get_offset(struct soc_tplg *tplg)
{
return (unsigned long)(tplg->pos - tplg->fw->data);
}
/* mapping of Kcontrol types and associated operations. */
static const struct snd_soc_tplg_kcontrol_ops io_ops[] = {
{SND_SOC_TPLG_CTL_VOLSW, snd_soc_get_volsw,
snd_soc_put_volsw, snd_soc_info_volsw},
{SND_SOC_TPLG_CTL_VOLSW_SX, snd_soc_get_volsw_sx,
snd_soc_put_volsw_sx, NULL},
{SND_SOC_TPLG_CTL_ENUM, snd_soc_get_enum_double,
snd_soc_put_enum_double, snd_soc_info_enum_double},
{SND_SOC_TPLG_CTL_ENUM_VALUE, snd_soc_get_enum_double,
snd_soc_put_enum_double, NULL},
{SND_SOC_TPLG_CTL_BYTES, snd_soc_bytes_get,
snd_soc_bytes_put, snd_soc_bytes_info},
{SND_SOC_TPLG_CTL_RANGE, snd_soc_get_volsw_range,
snd_soc_put_volsw_range, snd_soc_info_volsw_range},
{SND_SOC_TPLG_CTL_VOLSW_XR_SX, snd_soc_get_xr_sx,
snd_soc_put_xr_sx, snd_soc_info_xr_sx},
{SND_SOC_TPLG_CTL_STROBE, snd_soc_get_strobe,
snd_soc_put_strobe, NULL},
{SND_SOC_TPLG_DAPM_CTL_VOLSW, snd_soc_dapm_get_volsw,
snd_soc_dapm_put_volsw, snd_soc_info_volsw},
{SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE, snd_soc_dapm_get_enum_double,
snd_soc_dapm_put_enum_double, snd_soc_info_enum_double},
{SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT, snd_soc_dapm_get_enum_double,
snd_soc_dapm_put_enum_double, NULL},
{SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE, snd_soc_dapm_get_enum_double,
snd_soc_dapm_put_enum_double, NULL},
{SND_SOC_TPLG_DAPM_CTL_PIN, snd_soc_dapm_get_pin_switch,
snd_soc_dapm_put_pin_switch, snd_soc_dapm_info_pin_switch},
};
struct soc_tplg_map {
int uid;
int kid;
};
/* mapping of widget types from UAPI IDs to kernel IDs */
static const struct soc_tplg_map dapm_map[] = {
{SND_SOC_TPLG_DAPM_INPUT, snd_soc_dapm_input},
{SND_SOC_TPLG_DAPM_OUTPUT, snd_soc_dapm_output},
{SND_SOC_TPLG_DAPM_MUX, snd_soc_dapm_mux},
{SND_SOC_TPLG_DAPM_MIXER, snd_soc_dapm_mixer},
{SND_SOC_TPLG_DAPM_PGA, snd_soc_dapm_pga},
{SND_SOC_TPLG_DAPM_OUT_DRV, snd_soc_dapm_out_drv},
{SND_SOC_TPLG_DAPM_ADC, snd_soc_dapm_adc},
{SND_SOC_TPLG_DAPM_DAC, snd_soc_dapm_dac},
{SND_SOC_TPLG_DAPM_SWITCH, snd_soc_dapm_switch},
{SND_SOC_TPLG_DAPM_PRE, snd_soc_dapm_pre},
{SND_SOC_TPLG_DAPM_POST, snd_soc_dapm_post},
{SND_SOC_TPLG_DAPM_AIF_IN, snd_soc_dapm_aif_in},
{SND_SOC_TPLG_DAPM_AIF_OUT, snd_soc_dapm_aif_out},
{SND_SOC_TPLG_DAPM_DAI_IN, snd_soc_dapm_dai_in},
{SND_SOC_TPLG_DAPM_DAI_OUT, snd_soc_dapm_dai_out},
{SND_SOC_TPLG_DAPM_DAI_LINK, snd_soc_dapm_dai_link},
};
static int tplc_chan_get_reg(struct soc_tplg *tplg,
struct snd_soc_tplg_channel *chan, int map)
{
int i;
for (i = 0; i < SND_SOC_TPLG_MAX_CHAN; i++) {
if (chan[i].id == map)
return chan[i].reg;
}
return -EINVAL;
}
static int tplc_chan_get_shift(struct soc_tplg *tplg,
struct snd_soc_tplg_channel *chan, int map)
{
int i;
for (i = 0; i < SND_SOC_TPLG_MAX_CHAN; i++) {
if (chan[i].id == map)
return chan[i].shift;
}
return -EINVAL;
}
static int get_widget_id(int tplg_type)
{
int i;
for (i = 0; i < ARRAY_SIZE(dapm_map); i++) {
if (tplg_type == dapm_map[i].uid)
return dapm_map[i].kid;
}
return -EINVAL;
}
static inline void soc_bind_err(struct soc_tplg *tplg,
struct snd_soc_tplg_ctl_hdr *hdr, int index)
{
dev_err(tplg->dev,
"ASoC: invalid control type (g,p,i) %d:%d:%d index %d at 0x%lx\n",
hdr->ops.get, hdr->ops.put, hdr->ops.info, index,
soc_tplg_get_offset(tplg));
}
static inline void soc_control_err(struct soc_tplg *tplg,
struct snd_soc_tplg_ctl_hdr *hdr, const char *name)
{
dev_err(tplg->dev,
"ASoC: no complete mixer IO handler for %s type (g,p,i) %d:%d:%d at 0x%lx\n",
name, hdr->ops.get, hdr->ops.put, hdr->ops.info,
soc_tplg_get_offset(tplg));
}
/* pass vendor data to component driver for processing */
static int soc_tplg_vendor_load_(struct soc_tplg *tplg,
struct snd_soc_tplg_hdr *hdr)
{
int ret = 0;
if (tplg->comp && tplg->ops && tplg->ops->vendor_load)
ret = tplg->ops->vendor_load(tplg->comp, hdr);
else {
dev_err(tplg->dev, "ASoC: no vendor load callback for ID %d\n",
hdr->vendor_type);
return -EINVAL;
}
if (ret < 0)
dev_err(tplg->dev,
"ASoC: vendor load failed at hdr offset %ld/0x%lx for type %d:%d\n",
soc_tplg_get_hdr_offset(tplg),
soc_tplg_get_hdr_offset(tplg),
hdr->type, hdr->vendor_type);
return ret;
}
/* pass vendor data to component driver for processing */
static int soc_tplg_vendor_load(struct soc_tplg *tplg,
struct snd_soc_tplg_hdr *hdr)
{
if (tplg->pass != SOC_TPLG_PASS_VENDOR)
return 0;
return soc_tplg_vendor_load_(tplg, hdr);
}
/* optionally pass new dynamic widget to component driver. This is mainly for
* external widgets where we can assign private data/ops */
static int soc_tplg_widget_load(struct soc_tplg *tplg,
struct snd_soc_dapm_widget *w, struct snd_soc_tplg_dapm_widget *tplg_w)
{
if (tplg->comp && tplg->ops && tplg->ops->widget_load)
return tplg->ops->widget_load(tplg->comp, w, tplg_w);
return 0;
}
/* pass DAI configurations to component driver for extra intialization */
static int soc_tplg_dai_load(struct soc_tplg *tplg,
struct snd_soc_dai_driver *dai_drv)
{
if (tplg->comp && tplg->ops && tplg->ops->dai_load)
return tplg->ops->dai_load(tplg->comp, dai_drv);
return 0;
}
/* pass link configurations to component driver for extra intialization */
static int soc_tplg_dai_link_load(struct soc_tplg *tplg,
struct snd_soc_dai_link *link)
{
if (tplg->comp && tplg->ops && tplg->ops->link_load)
return tplg->ops->link_load(tplg->comp, link);
return 0;
}
/* tell the component driver that all firmware has been loaded in this request */
static void soc_tplg_complete(struct soc_tplg *tplg)
{
if (tplg->comp && tplg->ops && tplg->ops->complete)
tplg->ops->complete(tplg->comp);
}
/* add a dynamic kcontrol */
static int soc_tplg_add_dcontrol(struct snd_card *card, struct device *dev,
const struct snd_kcontrol_new *control_new, const char *prefix,
void *data, struct snd_kcontrol **kcontrol)
{
int err;
*kcontrol = snd_soc_cnew(control_new, data, control_new->name, prefix);
if (*kcontrol == NULL) {
dev_err(dev, "ASoC: Failed to create new kcontrol %s\n",
control_new->name);
return -ENOMEM;
}
err = snd_ctl_add(card, *kcontrol);
if (err < 0) {
dev_err(dev, "ASoC: Failed to add %s: %d\n",
control_new->name, err);
return err;
}
return 0;
}
/* add a dynamic kcontrol for component driver */
static int soc_tplg_add_kcontrol(struct soc_tplg *tplg,
struct snd_kcontrol_new *k, struct snd_kcontrol **kcontrol)
{
struct snd_soc_component *comp = tplg->comp;
return soc_tplg_add_dcontrol(comp->card->snd_card,
comp->dev, k, NULL, comp, kcontrol);
}
/* remove a mixer kcontrol */
static void remove_mixer(struct snd_soc_component *comp,
struct snd_soc_dobj *dobj, int pass)
{
struct snd_card *card = comp->card->snd_card;
struct soc_mixer_control *sm =
container_of(dobj, struct soc_mixer_control, dobj);
const unsigned int *p = NULL;
if (pass != SOC_TPLG_PASS_MIXER)
return;
if (dobj->ops && dobj->ops->control_unload)
dobj->ops->control_unload(comp, dobj);
if (sm->dobj.control.kcontrol->tlv.p)
p = sm->dobj.control.kcontrol->tlv.p;
snd_ctl_remove(card, sm->dobj.control.kcontrol);
list_del(&sm->dobj.list);
kfree(sm);
kfree(p);
}
/* remove an enum kcontrol */
static void remove_enum(struct snd_soc_component *comp,
struct snd_soc_dobj *dobj, int pass)
{
struct snd_card *card = comp->card->snd_card;
struct soc_enum *se = container_of(dobj, struct soc_enum, dobj);
int i;
if (pass != SOC_TPLG_PASS_MIXER)
return;
if (dobj->ops && dobj->ops->control_unload)
dobj->ops->control_unload(comp, dobj);
snd_ctl_remove(card, se->dobj.control.kcontrol);
list_del(&se->dobj.list);
kfree(se->dobj.control.dvalues);
for (i = 0; i < se->items; i++)
kfree(se->dobj.control.dtexts[i]);
kfree(se);
}
/* remove a byte kcontrol */
static void remove_bytes(struct snd_soc_component *comp,
struct snd_soc_dobj *dobj, int pass)
{
struct snd_card *card = comp->card->snd_card;
struct soc_bytes_ext *sb =
container_of(dobj, struct soc_bytes_ext, dobj);
if (pass != SOC_TPLG_PASS_MIXER)
return;
if (dobj->ops && dobj->ops->control_unload)
dobj->ops->control_unload(comp, dobj);
snd_ctl_remove(card, sb->dobj.control.kcontrol);
list_del(&sb->dobj.list);
kfree(sb);
}
/* remove a widget and it's kcontrols - routes must be removed first */
static void remove_widget(struct snd_soc_component *comp,
struct snd_soc_dobj *dobj, int pass)
{
struct snd_card *card = comp->card->snd_card;
struct snd_soc_dapm_widget *w =
container_of(dobj, struct snd_soc_dapm_widget, dobj);
int i;
if (pass != SOC_TPLG_PASS_WIDGET)
return;
if (dobj->ops && dobj->ops->widget_unload)
dobj->ops->widget_unload(comp, dobj);
/*
* Dynamic Widgets either have 1..N enum kcontrols or mixers.
* The enum may either have an array of values or strings.
*/
if (dobj->widget.kcontrol_type == SND_SOC_TPLG_TYPE_ENUM) {
/* enumerated widget mixer */
for (i = 0; i < w->num_kcontrols; i++) {
struct snd_kcontrol *kcontrol = w->kcontrols[i];
struct soc_enum *se =
(struct soc_enum *)kcontrol->private_value;
snd_ctl_remove(card, kcontrol);
kfree(se->dobj.control.dvalues);
for (i = 0; i < se->items; i++)
kfree(se->dobj.control.dtexts[i]);
kfree(se);
}
kfree(w->kcontrol_news);
} else {
/* volume mixer or bytes controls */
for (i = 0; i < w->num_kcontrols; i++) {
struct snd_kcontrol *kcontrol = w->kcontrols[i];
if (dobj->widget.kcontrol_type
== SND_SOC_TPLG_TYPE_MIXER)
kfree(kcontrol->tlv.p);
snd_ctl_remove(card, kcontrol);
/* Private value is used as struct soc_mixer_control
* for volume mixers or soc_bytes_ext for bytes
* controls.
*/
kfree((void *)kcontrol->private_value);
}
kfree(w->kcontrol_news);
}
/* widget w is freed by soc-dapm.c */
}
/* remove DAI configurations */
static void remove_dai(struct snd_soc_component *comp,
struct snd_soc_dobj *dobj, int pass)
{
struct snd_soc_dai_driver *dai_drv =
container_of(dobj, struct snd_soc_dai_driver, dobj);
if (pass != SOC_TPLG_PASS_PCM_DAI)
return;
if (dobj->ops && dobj->ops->dai_unload)
dobj->ops->dai_unload(comp, dobj);
kfree(dai_drv->name);
list_del(&dobj->list);
kfree(dai_drv);
}
/* remove link configurations */
static void remove_link(struct snd_soc_component *comp,
struct snd_soc_dobj *dobj, int pass)
{
struct snd_soc_dai_link *link =
container_of(dobj, struct snd_soc_dai_link, dobj);
if (pass != SOC_TPLG_PASS_PCM_DAI)
return;
if (dobj->ops && dobj->ops->link_unload)
dobj->ops->link_unload(comp, dobj);
kfree(link->name);
kfree(link->stream_name);
kfree(link->cpu_dai_name);
list_del(&dobj->list);
snd_soc_remove_dai_link(comp->card, link);
kfree(link);
}
/* bind a kcontrol to it's IO handlers */
static int soc_tplg_kcontrol_bind_io(struct snd_soc_tplg_ctl_hdr *hdr,
struct snd_kcontrol_new *k,
const struct soc_tplg *tplg)
{
const struct snd_soc_tplg_kcontrol_ops *ops;
const struct snd_soc_tplg_bytes_ext_ops *ext_ops;
int num_ops, i;
if (hdr->ops.info == SND_SOC_TPLG_CTL_BYTES
&& k->iface & SNDRV_CTL_ELEM_IFACE_MIXER
&& k->access & SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE
&& k->access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
struct soc_bytes_ext *sbe;
struct snd_soc_tplg_bytes_control *be;
sbe = (struct soc_bytes_ext *)k->private_value;
be = container_of(hdr, struct snd_soc_tplg_bytes_control, hdr);
/* TLV bytes controls need standard kcontrol info handler,
* TLV callback and extended put/get handlers.
*/
k->info = snd_soc_bytes_info_ext;
k->tlv.c = snd_soc_bytes_tlv_callback;
ext_ops = tplg->bytes_ext_ops;
num_ops = tplg->bytes_ext_ops_count;
for (i = 0; i < num_ops; i++) {
if (!sbe->put && ext_ops[i].id == be->ext_ops.put)
sbe->put = ext_ops[i].put;
if (!sbe->get && ext_ops[i].id == be->ext_ops.get)
sbe->get = ext_ops[i].get;
}
if (sbe->put && sbe->get)
return 0;
else
return -EINVAL;
}
/* try and map vendor specific kcontrol handlers first */
ops = tplg->io_ops;
num_ops = tplg->io_ops_count;
for (i = 0; i < num_ops; i++) {
if (k->put == NULL && ops[i].id == hdr->ops.put)
k->put = ops[i].put;
if (k->get == NULL && ops[i].id == hdr->ops.get)
k->get = ops[i].get;
if (k->info == NULL && ops[i].id == hdr->ops.info)
k->info = ops[i].info;
}
/* vendor specific handlers found ? */
if (k->put && k->get && k->info)
return 0;
/* none found so try standard kcontrol handlers */
ops = io_ops;
num_ops = ARRAY_SIZE(io_ops);
for (i = 0; i < num_ops; i++) {
if (k->put == NULL && ops[i].id == hdr->ops.put)
k->put = ops[i].put;
if (k->get == NULL && ops[i].id == hdr->ops.get)
k->get = ops[i].get;
if (k->info == NULL && ops[i].id == hdr->ops.info)
k->info = ops[i].info;
}
/* standard handlers found ? */
if (k->put && k->get && k->info)
return 0;
/* nothing to bind */
return -EINVAL;
}
/* bind a widgets to it's evnt handlers */
int snd_soc_tplg_widget_bind_event(struct snd_soc_dapm_widget *w,
const struct snd_soc_tplg_widget_events *events,
int num_events, u16 event_type)
{
int i;
w->event = NULL;
for (i = 0; i < num_events; i++) {
if (event_type == events[i].type) {
/* found - so assign event */
w->event = events[i].event_handler;
return 0;
}
}
/* not found */
return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_tplg_widget_bind_event);
/* optionally pass new dynamic kcontrol to component driver. */
static int soc_tplg_init_kcontrol(struct soc_tplg *tplg,
struct snd_kcontrol_new *k, struct snd_soc_tplg_ctl_hdr *hdr)
{
if (tplg->comp && tplg->ops && tplg->ops->control_load)
return tplg->ops->control_load(tplg->comp, k, hdr);
return 0;
}
static int soc_tplg_create_tlv_db_scale(struct soc_tplg *tplg,
struct snd_kcontrol_new *kc, struct snd_soc_tplg_tlv_dbscale *scale)
{
unsigned int item_len = 2 * sizeof(unsigned int);
unsigned int *p;
p = kzalloc(item_len + 2 * sizeof(unsigned int), GFP_KERNEL);
if (!p)
return -ENOMEM;
p[0] = SNDRV_CTL_TLVT_DB_SCALE;
p[1] = item_len;
p[2] = scale->min;
p[3] = (scale->step & TLV_DB_SCALE_MASK)
| (scale->mute ? TLV_DB_SCALE_MUTE : 0);
kc->tlv.p = (void *)p;
return 0;
}
static int soc_tplg_create_tlv(struct soc_tplg *tplg,
struct snd_kcontrol_new *kc, struct snd_soc_tplg_ctl_hdr *tc)
{
struct snd_soc_tplg_ctl_tlv *tplg_tlv;
if (!(tc->access & SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE))
return 0;
if (!(tc->access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK)) {
tplg_tlv = &tc->tlv;
switch (tplg_tlv->type) {
case SNDRV_CTL_TLVT_DB_SCALE:
return soc_tplg_create_tlv_db_scale(tplg, kc,
&tplg_tlv->scale);
/* TODO: add support for other TLV types */
default:
dev_dbg(tplg->dev, "Unsupported TLV type %d\n",
tplg_tlv->type);
return -EINVAL;
}
}
return 0;
}
static inline void soc_tplg_free_tlv(struct soc_tplg *tplg,
struct snd_kcontrol_new *kc)
{
kfree(kc->tlv.p);
}
static int soc_tplg_dbytes_create(struct soc_tplg *tplg, unsigned int count,
size_t size)
{
struct snd_soc_tplg_bytes_control *be;
struct soc_bytes_ext *sbe;
struct snd_kcontrol_new kc;
int i, err;
if (soc_tplg_check_elem_count(tplg,
sizeof(struct snd_soc_tplg_bytes_control), count,
size, "mixer bytes")) {
dev_err(tplg->dev, "ASoC: Invalid count %d for byte control\n",
count);
return -EINVAL;
}
for (i = 0; i < count; i++) {
be = (struct snd_soc_tplg_bytes_control *)tplg->pos;
/* validate kcontrol */
if (strnlen(be->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
return -EINVAL;
sbe = kzalloc(sizeof(*sbe), GFP_KERNEL);
if (sbe == NULL)
return -ENOMEM;
tplg->pos += (sizeof(struct snd_soc_tplg_bytes_control) +
be->priv.size);
dev_dbg(tplg->dev,
"ASoC: adding bytes kcontrol %s with access 0x%x\n",
be->hdr.name, be->hdr.access);
memset(&kc, 0, sizeof(kc));
kc.name = be->hdr.name;
kc.private_value = (long)sbe;
kc.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
kc.access = be->hdr.access;
sbe->max = be->max;
sbe->dobj.type = SND_SOC_DOBJ_BYTES;
sbe->dobj.ops = tplg->ops;
INIT_LIST_HEAD(&sbe->dobj.list);
/* map io handlers */
err = soc_tplg_kcontrol_bind_io(&be->hdr, &kc, tplg);
if (err) {
soc_control_err(tplg, &be->hdr, be->hdr.name);
kfree(sbe);
continue;
}
/* pass control to driver for optional further init */
err = soc_tplg_init_kcontrol(tplg, &kc,
(struct snd_soc_tplg_ctl_hdr *)be);
if (err < 0) {
dev_err(tplg->dev, "ASoC: failed to init %s\n",
be->hdr.name);
kfree(sbe);
continue;
}
/* register control here */
err = soc_tplg_add_kcontrol(tplg, &kc,
&sbe->dobj.control.kcontrol);
if (err < 0) {
dev_err(tplg->dev, "ASoC: failed to add %s\n",
be->hdr.name);
kfree(sbe);
continue;
}
list_add(&sbe->dobj.list, &tplg->comp->dobj_list);
}
return 0;
}
static int soc_tplg_dmixer_create(struct soc_tplg *tplg, unsigned int count,
size_t size)
{
struct snd_soc_tplg_mixer_control *mc;
struct soc_mixer_control *sm;
struct snd_kcontrol_new kc;
int i, err;
if (soc_tplg_check_elem_count(tplg,
sizeof(struct snd_soc_tplg_mixer_control),
count, size, "mixers")) {
dev_err(tplg->dev, "ASoC: invalid count %d for controls\n",
count);
return -EINVAL;
}
for (i = 0; i < count; i++) {
mc = (struct snd_soc_tplg_mixer_control *)tplg->pos;
/* validate kcontrol */
if (strnlen(mc->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
return -EINVAL;
sm = kzalloc(sizeof(*sm), GFP_KERNEL);
if (sm == NULL)
return -ENOMEM;
tplg->pos += (sizeof(struct snd_soc_tplg_mixer_control) +
mc->priv.size);
dev_dbg(tplg->dev,
"ASoC: adding mixer kcontrol %s with access 0x%x\n",
mc->hdr.name, mc->hdr.access);
memset(&kc, 0, sizeof(kc));
kc.name = mc->hdr.name;
kc.private_value = (long)sm;
kc.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
kc.access = mc->hdr.access;
/* we only support FL/FR channel mapping atm */
sm->reg = tplc_chan_get_reg(tplg, mc->channel,
SNDRV_CHMAP_FL);
sm->rreg = tplc_chan_get_reg(tplg, mc->channel,
SNDRV_CHMAP_FR);
sm->shift = tplc_chan_get_shift(tplg, mc->channel,
SNDRV_CHMAP_FL);
sm->rshift = tplc_chan_get_shift(tplg, mc->channel,
SNDRV_CHMAP_FR);
sm->max = mc->max;
sm->min = mc->min;
sm->invert = mc->invert;
sm->platform_max = mc->platform_max;
sm->dobj.index = tplg->index;
sm->dobj.ops = tplg->ops;
sm->dobj.type = SND_SOC_DOBJ_MIXER;
INIT_LIST_HEAD(&sm->dobj.list);
/* map io handlers */
err = soc_tplg_kcontrol_bind_io(&mc->hdr, &kc, tplg);
if (err) {
soc_control_err(tplg, &mc->hdr, mc->hdr.name);
kfree(sm);
continue;
}
/* pass control to driver for optional further init */
err = soc_tplg_init_kcontrol(tplg, &kc,
(struct snd_soc_tplg_ctl_hdr *) mc);
if (err < 0) {
dev_err(tplg->dev, "ASoC: failed to init %s\n",
mc->hdr.name);
kfree(sm);
continue;
}
/* create any TLV data */
soc_tplg_create_tlv(tplg, &kc, &mc->hdr);
/* register control here */
err = soc_tplg_add_kcontrol(tplg, &kc,
&sm->dobj.control.kcontrol);
if (err < 0) {
dev_err(tplg->dev, "ASoC: failed to add %s\n",
mc->hdr.name);
soc_tplg_free_tlv(tplg, &kc);
kfree(sm);
continue;
}
list_add(&sm->dobj.list, &tplg->comp->dobj_list);
}
return 0;
}
static int soc_tplg_denum_create_texts(struct soc_enum *se,
struct snd_soc_tplg_enum_control *ec)
{
int i, ret;
se->dobj.control.dtexts =
kzalloc(sizeof(char *) * ec->items, GFP_KERNEL);
if (se->dobj.control.dtexts == NULL)
return -ENOMEM;
for (i = 0; i < ec->items; i++) {
if (strnlen(ec->texts[i], SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN) {
ret = -EINVAL;
goto err;
}
se->dobj.control.dtexts[i] = kstrdup(ec->texts[i], GFP_KERNEL);
if (!se->dobj.control.dtexts[i]) {
ret = -ENOMEM;
goto err;
}
}
return 0;
err:
for (--i; i >= 0; i--)
kfree(se->dobj.control.dtexts[i]);
kfree(se->dobj.control.dtexts);
return ret;
}
static int soc_tplg_denum_create_values(struct soc_enum *se,
struct snd_soc_tplg_enum_control *ec)
{
if (ec->items > sizeof(*ec->values))
return -EINVAL;
se->dobj.control.dvalues = kmemdup(ec->values,
ec->items * sizeof(u32),
GFP_KERNEL);
if (!se->dobj.control.dvalues)
return -ENOMEM;
return 0;
}
static int soc_tplg_denum_create(struct soc_tplg *tplg, unsigned int count,
size_t size)
{
struct snd_soc_tplg_enum_control *ec;
struct soc_enum *se;
struct snd_kcontrol_new kc;
int i, ret, err;
if (soc_tplg_check_elem_count(tplg,
sizeof(struct snd_soc_tplg_enum_control),
count, size, "enums")) {
dev_err(tplg->dev, "ASoC: invalid count %d for enum controls\n",
count);
return -EINVAL;
}
for (i = 0; i < count; i++) {
ec = (struct snd_soc_tplg_enum_control *)tplg->pos;
tplg->pos += (sizeof(struct snd_soc_tplg_enum_control) +
ec->priv.size);
/* validate kcontrol */
if (strnlen(ec->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
return -EINVAL;
se = kzalloc((sizeof(*se)), GFP_KERNEL);
if (se == NULL)
return -ENOMEM;
dev_dbg(tplg->dev, "ASoC: adding enum kcontrol %s size %d\n",
ec->hdr.name, ec->items);
memset(&kc, 0, sizeof(kc));
kc.name = ec->hdr.name;
kc.private_value = (long)se;
kc.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
kc.access = ec->hdr.access;
se->reg = tplc_chan_get_reg(tplg, ec->channel, SNDRV_CHMAP_FL);
se->shift_l = tplc_chan_get_shift(tplg, ec->channel,
SNDRV_CHMAP_FL);
se->shift_r = tplc_chan_get_shift(tplg, ec->channel,
SNDRV_CHMAP_FL);
se->items = ec->items;
se->mask = ec->mask;
se->dobj.index = tplg->index;
se->dobj.type = SND_SOC_DOBJ_ENUM;
se->dobj.ops = tplg->ops;
INIT_LIST_HEAD(&se->dobj.list);
switch (ec->hdr.ops.info) {
case SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE:
case SND_SOC_TPLG_CTL_ENUM_VALUE:
err = soc_tplg_denum_create_values(se, ec);
if (err < 0) {
dev_err(tplg->dev,
"ASoC: could not create values for %s\n",
ec->hdr.name);
kfree(se);
continue;
}
/* fall through and create texts */
case SND_SOC_TPLG_CTL_ENUM:
case SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE:
case SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT:
err = soc_tplg_denum_create_texts(se, ec);
if (err < 0) {
dev_err(tplg->dev,
"ASoC: could not create texts for %s\n",
ec->hdr.name);
kfree(se);
continue;
}
break;
default:
dev_err(tplg->dev,
"ASoC: invalid enum control type %d for %s\n",
ec->hdr.ops.info, ec->hdr.name);
kfree(se);
continue;
}
/* map io handlers */
err = soc_tplg_kcontrol_bind_io(&ec->hdr, &kc, tplg);
if (err) {
soc_control_err(tplg, &ec->hdr, ec->hdr.name);
kfree(se);
continue;
}
/* pass control to driver for optional further init */
err = soc_tplg_init_kcontrol(tplg, &kc,
(struct snd_soc_tplg_ctl_hdr *) ec);
if (err < 0) {
dev_err(tplg->dev, "ASoC: failed to init %s\n",
ec->hdr.name);
kfree(se);
continue;
}
/* register control here */
ret = soc_tplg_add_kcontrol(tplg,
&kc, &se->dobj.control.kcontrol);
if (ret < 0) {
dev_err(tplg->dev, "ASoC: could not add kcontrol %s\n",
ec->hdr.name);
kfree(se);
continue;
}
list_add(&se->dobj.list, &tplg->comp->dobj_list);
}
return 0;
}
static int soc_tplg_kcontrol_elems_load(struct soc_tplg *tplg,
struct snd_soc_tplg_hdr *hdr)
{
struct snd_soc_tplg_ctl_hdr *control_hdr;
int i;
if (tplg->pass != SOC_TPLG_PASS_MIXER) {
tplg->pos += hdr->size + hdr->payload_size;
return 0;
}
dev_dbg(tplg->dev, "ASoC: adding %d kcontrols at 0x%lx\n", hdr->count,
soc_tplg_get_offset(tplg));
for (i = 0; i < hdr->count; i++) {
control_hdr = (struct snd_soc_tplg_ctl_hdr *)tplg->pos;
if (control_hdr->size != sizeof(*control_hdr)) {
dev_err(tplg->dev, "ASoC: invalid control size\n");
return -EINVAL;
}
switch (control_hdr->ops.info) {
case SND_SOC_TPLG_CTL_VOLSW:
case SND_SOC_TPLG_CTL_STROBE:
case SND_SOC_TPLG_CTL_VOLSW_SX:
case SND_SOC_TPLG_CTL_VOLSW_XR_SX:
case SND_SOC_TPLG_CTL_RANGE:
case SND_SOC_TPLG_DAPM_CTL_VOLSW:
case SND_SOC_TPLG_DAPM_CTL_PIN:
soc_tplg_dmixer_create(tplg, 1, hdr->payload_size);
break;
case SND_SOC_TPLG_CTL_ENUM:
case SND_SOC_TPLG_CTL_ENUM_VALUE:
case SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE:
case SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT:
case SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE:
soc_tplg_denum_create(tplg, 1, hdr->payload_size);
break;
case SND_SOC_TPLG_CTL_BYTES:
soc_tplg_dbytes_create(tplg, 1, hdr->payload_size);
break;
default:
soc_bind_err(tplg, control_hdr, i);
return -EINVAL;
}
}
return 0;
}
static int soc_tplg_dapm_graph_elems_load(struct soc_tplg *tplg,
struct snd_soc_tplg_hdr *hdr)
{
struct snd_soc_dapm_context *dapm = &tplg->comp->dapm;
struct snd_soc_dapm_route route;
struct snd_soc_tplg_dapm_graph_elem *elem;
int count = hdr->count, i;
if (tplg->pass != SOC_TPLG_PASS_GRAPH) {
tplg->pos += hdr->size + hdr->payload_size;
return 0;
}
if (soc_tplg_check_elem_count(tplg,
sizeof(struct snd_soc_tplg_dapm_graph_elem),
count, hdr->payload_size, "graph")) {
dev_err(tplg->dev, "ASoC: invalid count %d for DAPM routes\n",
count);
return -EINVAL;
}
dev_dbg(tplg->dev, "ASoC: adding %d DAPM routes\n", count);
for (i = 0; i < count; i++) {
elem = (struct snd_soc_tplg_dapm_graph_elem *)tplg->pos;
tplg->pos += sizeof(struct snd_soc_tplg_dapm_graph_elem);
/* validate routes */
if (strnlen(elem->source, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
return -EINVAL;
if (strnlen(elem->sink, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
return -EINVAL;
if (strnlen(elem->control, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
return -EINVAL;
route.source = elem->source;
route.sink = elem->sink;
route.connected = NULL; /* set to NULL atm for tplg users */
if (strnlen(elem->control, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) == 0)
route.control = NULL;
else
route.control = elem->control;
/* add route, but keep going if some fail */
snd_soc_dapm_add_routes(dapm, &route, 1);
}
return 0;
}
static struct snd_kcontrol_new *soc_tplg_dapm_widget_dmixer_create(
struct soc_tplg *tplg, int num_kcontrols)
{
struct snd_kcontrol_new *kc;
struct soc_mixer_control *sm;
struct snd_soc_tplg_mixer_control *mc;
int i, err;
kc = kcalloc(num_kcontrols, sizeof(*kc), GFP_KERNEL);
if (kc == NULL)
return NULL;
for (i = 0; i < num_kcontrols; i++) {
mc = (struct snd_soc_tplg_mixer_control *)tplg->pos;
sm = kzalloc(sizeof(*sm), GFP_KERNEL);
if (sm == NULL)
goto err;
tplg->pos += (sizeof(struct snd_soc_tplg_mixer_control) +
mc->priv.size);
/* validate kcontrol */
if (strnlen(mc->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
goto err_str;
dev_dbg(tplg->dev, " adding DAPM widget mixer control %s at %d\n",
mc->hdr.name, i);
kc[i].name = mc->hdr.name;
kc[i].private_value = (long)sm;
kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
kc[i].access = mc->hdr.access;
/* we only support FL/FR channel mapping atm */
sm->reg = tplc_chan_get_reg(tplg, mc->channel,
SNDRV_CHMAP_FL);
sm->rreg = tplc_chan_get_reg(tplg, mc->channel,
SNDRV_CHMAP_FR);
sm->shift = tplc_chan_get_shift(tplg, mc->channel,
SNDRV_CHMAP_FL);
sm->rshift = tplc_chan_get_shift(tplg, mc->channel,
SNDRV_CHMAP_FR);
sm->max = mc->max;
sm->min = mc->min;
sm->invert = mc->invert;
sm->platform_max = mc->platform_max;
sm->dobj.index = tplg->index;
INIT_LIST_HEAD(&sm->dobj.list);
/* map io handlers */
err = soc_tplg_kcontrol_bind_io(&mc->hdr, &kc[i], tplg);
if (err) {
soc_control_err(tplg, &mc->hdr, mc->hdr.name);
kfree(sm);
continue;
}
/* pass control to driver for optional further init */
err = soc_tplg_init_kcontrol(tplg, &kc[i],
(struct snd_soc_tplg_ctl_hdr *)mc);
if (err < 0) {
dev_err(tplg->dev, "ASoC: failed to init %s\n",
mc->hdr.name);
kfree(sm);
continue;
}
}
return kc;
err_str:
kfree(sm);
err:
for (--i; i >= 0; i--)
kfree((void *)kc[i].private_value);
kfree(kc);
return NULL;
}
static struct snd_kcontrol_new *soc_tplg_dapm_widget_denum_create(
struct soc_tplg *tplg, int num_kcontrols)
{
struct snd_kcontrol_new *kc;
struct snd_soc_tplg_enum_control *ec;
struct soc_enum *se;
int i, j, err;
kc = kcalloc(num_kcontrols, sizeof(*kc), GFP_KERNEL);
if (kc == NULL)
return NULL;
for (i = 0; i < num_kcontrols; i++) {
ec = (struct snd_soc_tplg_enum_control *)tplg->pos;
/* validate kcontrol */
if (strnlen(ec->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
return NULL;
se = kzalloc(sizeof(*se), GFP_KERNEL);
if (se == NULL)
goto err;
dev_dbg(tplg->dev, " adding DAPM widget enum control %s\n",
ec->hdr.name);
kc[i].name = ec->hdr.name;
kc[i].private_value = (long)se;
kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
kc[i].access = ec->hdr.access;
/* we only support FL/FR channel mapping atm */
se->reg = tplc_chan_get_reg(tplg, ec->channel, SNDRV_CHMAP_FL);
se->shift_l = tplc_chan_get_shift(tplg, ec->channel,
SNDRV_CHMAP_FL);
se->shift_r = tplc_chan_get_shift(tplg, ec->channel,
SNDRV_CHMAP_FR);
se->items = ec->items;
se->mask = ec->mask;
se->dobj.index = tplg->index;
switch (ec->hdr.ops.info) {
case SND_SOC_TPLG_CTL_ENUM_VALUE:
case SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE:
err = soc_tplg_denum_create_values(se, ec);
if (err < 0) {
dev_err(tplg->dev, "ASoC: could not create values for %s\n",
ec->hdr.name);
goto err_se;
}
/* fall through to create texts */
case SND_SOC_TPLG_CTL_ENUM:
case SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE:
case SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT:
err = soc_tplg_denum_create_texts(se, ec);
if (err < 0) {
dev_err(tplg->dev, "ASoC: could not create texts for %s\n",
ec->hdr.name);
goto err_se;
}
break;
default:
dev_err(tplg->dev, "ASoC: invalid enum control type %d for %s\n",
ec->hdr.ops.info, ec->hdr.name);
goto err_se;
}
/* map io handlers */
err = soc_tplg_kcontrol_bind_io(&ec->hdr, &kc[i], tplg);
if (err) {
soc_control_err(tplg, &ec->hdr, ec->hdr.name);
goto err_se;
}
/* pass control to driver for optional further init */
err = soc_tplg_init_kcontrol(tplg, &kc[i],
(struct snd_soc_tplg_ctl_hdr *)ec);
if (err < 0) {
dev_err(tplg->dev, "ASoC: failed to init %s\n",
ec->hdr.name);
goto err_se;
}
tplg->pos += (sizeof(struct snd_soc_tplg_enum_control) +
ec->priv.size);
}
return kc;
err_se:
for (; i >= 0; i--) {
/* free values and texts */
se = (struct soc_enum *)kc[i].private_value;
kfree(se->dobj.control.dvalues);
for (j = 0; j < ec->items; j++)
kfree(se->dobj.control.dtexts[j]);
kfree(se);
}
err:
kfree(kc);
return NULL;
}
static struct snd_kcontrol_new *soc_tplg_dapm_widget_dbytes_create(
struct soc_tplg *tplg, int count)
{
struct snd_soc_tplg_bytes_control *be;
struct soc_bytes_ext *sbe;
struct snd_kcontrol_new *kc;
int i, err;
kc = kcalloc(count, sizeof(*kc), GFP_KERNEL);
if (!kc)
return NULL;
for (i = 0; i < count; i++) {
be = (struct snd_soc_tplg_bytes_control *)tplg->pos;
/* validate kcontrol */
if (strnlen(be->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
goto err;
sbe = kzalloc(sizeof(*sbe), GFP_KERNEL);
if (sbe == NULL)
goto err;
tplg->pos += (sizeof(struct snd_soc_tplg_bytes_control) +
be->priv.size);
dev_dbg(tplg->dev,
"ASoC: adding bytes kcontrol %s with access 0x%x\n",
be->hdr.name, be->hdr.access);
kc[i].name = be->hdr.name;
kc[i].private_value = (long)sbe;
kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
kc[i].access = be->hdr.access;
sbe->max = be->max;
INIT_LIST_HEAD(&sbe->dobj.list);
/* map standard io handlers and check for external handlers */
err = soc_tplg_kcontrol_bind_io(&be->hdr, &kc[i], tplg);
if (err) {
soc_control_err(tplg, &be->hdr, be->hdr.name);
kfree(sbe);
continue;
}
/* pass control to driver for optional further init */
err = soc_tplg_init_kcontrol(tplg, &kc[i],
(struct snd_soc_tplg_ctl_hdr *)be);
if (err < 0) {
dev_err(tplg->dev, "ASoC: failed to init %s\n",
be->hdr.name);
kfree(sbe);
continue;
}
}
return kc;
err:
for (--i; i >= 0; i--)
kfree((void *)kc[i].private_value);
kfree(kc);
return NULL;
}
static int soc_tplg_dapm_widget_create(struct soc_tplg *tplg,
struct snd_soc_tplg_dapm_widget *w)
{
struct snd_soc_dapm_context *dapm = &tplg->comp->dapm;
struct snd_soc_dapm_widget template, *widget;
struct snd_soc_tplg_ctl_hdr *control_hdr;
struct snd_soc_card *card = tplg->comp->card;
unsigned int kcontrol_type;
int ret = 0;
if (strnlen(w->name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
return -EINVAL;
if (strnlen(w->sname, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
return -EINVAL;
dev_dbg(tplg->dev, "ASoC: creating DAPM widget %s id %d\n",
w->name, w->id);
memset(&template, 0, sizeof(template));
/* map user to kernel widget ID */
template.id = get_widget_id(w->id);
if (template.id < 0)
return template.id;
template.name = kstrdup(w->name, GFP_KERNEL);
if (!template.name)
return -ENOMEM;
template.sname = kstrdup(w->sname, GFP_KERNEL);
if (!template.sname) {
ret = -ENOMEM;
goto err;
}
template.reg = w->reg;
template.shift = w->shift;
template.mask = w->mask;
template.subseq = w->subseq;
template.on_val = w->invert ? 0 : 1;
template.off_val = w->invert ? 1 : 0;
template.ignore_suspend = w->ignore_suspend;
template.event_flags = w->event_flags;
template.dobj.index = tplg->index;
tplg->pos +=
(sizeof(struct snd_soc_tplg_dapm_widget) + w->priv.size);
if (w->num_kcontrols == 0) {
kcontrol_type = 0;
template.num_kcontrols = 0;
goto widget;
}
control_hdr = (struct snd_soc_tplg_ctl_hdr *)tplg->pos;
dev_dbg(tplg->dev, "ASoC: template %s has %d controls of type %x\n",
w->name, w->num_kcontrols, control_hdr->type);
switch (control_hdr->ops.info) {
case SND_SOC_TPLG_CTL_VOLSW:
case SND_SOC_TPLG_CTL_STROBE:
case SND_SOC_TPLG_CTL_VOLSW_SX:
case SND_SOC_TPLG_CTL_VOLSW_XR_SX:
case SND_SOC_TPLG_CTL_RANGE:
case SND_SOC_TPLG_DAPM_CTL_VOLSW:
kcontrol_type = SND_SOC_TPLG_TYPE_MIXER; /* volume mixer */
template.num_kcontrols = w->num_kcontrols;
template.kcontrol_news =
soc_tplg_dapm_widget_dmixer_create(tplg,
template.num_kcontrols);
if (!template.kcontrol_news) {
ret = -ENOMEM;
goto hdr_err;
}
break;
case SND_SOC_TPLG_CTL_ENUM:
case SND_SOC_TPLG_CTL_ENUM_VALUE:
case SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE:
case SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT:
case SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE:
kcontrol_type = SND_SOC_TPLG_TYPE_ENUM; /* enumerated mixer */
template.num_kcontrols = w->num_kcontrols;
template.kcontrol_news =
soc_tplg_dapm_widget_denum_create(tplg,
template.num_kcontrols);
if (!template.kcontrol_news) {
ret = -ENOMEM;
goto hdr_err;
}
break;
case SND_SOC_TPLG_CTL_BYTES:
kcontrol_type = SND_SOC_TPLG_TYPE_BYTES; /* bytes control */
template.num_kcontrols = w->num_kcontrols;
template.kcontrol_news =
soc_tplg_dapm_widget_dbytes_create(tplg,
template.num_kcontrols);
if (!template.kcontrol_news) {
ret = -ENOMEM;
goto hdr_err;
}
break;
default:
dev_err(tplg->dev, "ASoC: invalid widget control type %d:%d:%d\n",
control_hdr->ops.get, control_hdr->ops.put,
control_hdr->ops.info);
ret = -EINVAL;
goto hdr_err;
}
widget:
ret = soc_tplg_widget_load(tplg, &template, w);
if (ret < 0)
goto hdr_err;
/* card dapm mutex is held by the core if we are loading topology
* data during sound card init. */
if (card->instantiated)
widget = snd_soc_dapm_new_control(dapm, &template);
else
widget = snd_soc_dapm_new_control_unlocked(dapm, &template);
if (widget == NULL) {
dev_err(tplg->dev, "ASoC: failed to create widget %s controls\n",
w->name);
ret = -ENOMEM;
goto hdr_err;
}
widget->dobj.type = SND_SOC_DOBJ_WIDGET;
widget->dobj.widget.kcontrol_type = kcontrol_type;
widget->dobj.ops = tplg->ops;
widget->dobj.index = tplg->index;
kfree(template.sname);
kfree(template.name);
list_add(&widget->dobj.list, &tplg->comp->dobj_list);
return 0;
hdr_err:
kfree(template.sname);
err:
kfree(template.name);
return ret;
}
static int soc_tplg_dapm_widget_elems_load(struct soc_tplg *tplg,
struct snd_soc_tplg_hdr *hdr)
{
struct snd_soc_tplg_dapm_widget *widget;
int ret, count = hdr->count, i;
if (tplg->pass != SOC_TPLG_PASS_WIDGET)
return 0;
dev_dbg(tplg->dev, "ASoC: adding %d DAPM widgets\n", count);
for (i = 0; i < count; i++) {
widget = (struct snd_soc_tplg_dapm_widget *) tplg->pos;
if (widget->size != sizeof(*widget)) {
dev_err(tplg->dev, "ASoC: invalid widget size\n");
return -EINVAL;
}
ret = soc_tplg_dapm_widget_create(tplg, widget);
if (ret < 0) {
dev_err(tplg->dev, "ASoC: failed to load widget %s\n",
widget->name);
return ret;
}
}
return 0;
}
static int soc_tplg_dapm_complete(struct soc_tplg *tplg)
{
struct snd_soc_card *card = tplg->comp->card;
int ret;
/* Card might not have been registered at this point.
* If so, just return success.
*/
if (!card || !card->instantiated) {
dev_warn(tplg->dev, "ASoC: Parent card not yet available,"
"Do not add new widgets now\n");
return 0;
}
ret = snd_soc_dapm_new_widgets(card);
if (ret < 0)
dev_err(tplg->dev, "ASoC: failed to create new widgets %d\n",
ret);
return 0;
}
static void set_stream_info(struct snd_soc_pcm_stream *stream,
struct snd_soc_tplg_stream_caps *caps)
{
stream->stream_name = kstrdup(caps->name, GFP_KERNEL);
stream->channels_min = caps->channels_min;
stream->channels_max = caps->channels_max;
stream->rates = caps->rates;
stream->rate_min = caps->rate_min;
stream->rate_max = caps->rate_max;
stream->formats = caps->formats;
stream->sig_bits = caps->sig_bits;
}
static void set_dai_flags(struct snd_soc_dai_driver *dai_drv,
unsigned int flag_mask, unsigned int flags)
{
if (flag_mask & SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_RATES)
dai_drv->symmetric_rates =
flags & SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_RATES ? 1 : 0;
if (flag_mask & SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_CHANNELS)
dai_drv->symmetric_channels =
flags & SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_CHANNELS ?
1 : 0;
if (flag_mask & SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_SAMPLEBITS)
dai_drv->symmetric_samplebits =
flags & SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_SAMPLEBITS ?
1 : 0;
}
static int soc_tplg_dai_create(struct soc_tplg *tplg,
struct snd_soc_tplg_pcm *pcm)
{
struct snd_soc_dai_driver *dai_drv;
struct snd_soc_pcm_stream *stream;
struct snd_soc_tplg_stream_caps *caps;
int ret;
dai_drv = kzalloc(sizeof(struct snd_soc_dai_driver), GFP_KERNEL);
if (dai_drv == NULL)
return -ENOMEM;
if (strlen(pcm->dai_name))
dai_drv->name = kstrdup(pcm->dai_name, GFP_KERNEL);
dai_drv->id = pcm->dai_id;
if (pcm->playback) {
stream = &dai_drv->playback;
caps = &pcm->caps[SND_SOC_TPLG_STREAM_PLAYBACK];
set_stream_info(stream, caps);
}
if (pcm->capture) {
stream = &dai_drv->capture;
caps = &pcm->caps[SND_SOC_TPLG_STREAM_CAPTURE];
set_stream_info(stream, caps);
}
/* pass control to component driver for optional further init */
ret = soc_tplg_dai_load(tplg, dai_drv);
if (ret < 0) {
dev_err(tplg->comp->dev, "ASoC: DAI loading failed\n");
kfree(dai_drv);
return ret;
}
dai_drv->dobj.index = tplg->index;
dai_drv->dobj.ops = tplg->ops;
dai_drv->dobj.type = SND_SOC_DOBJ_PCM;
list_add(&dai_drv->dobj.list, &tplg->comp->dobj_list);
/* register the DAI to the component */
return snd_soc_register_dai(tplg->comp, dai_drv);
}
static void set_link_flags(struct snd_soc_dai_link *link,
unsigned int flag_mask, unsigned int flags)
{
if (flag_mask & SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_RATES)
link->symmetric_rates =
flags & SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_RATES ? 1 : 0;
if (flag_mask & SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_CHANNELS)
link->symmetric_channels =
flags & SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_CHANNELS ?
1 : 0;
if (flag_mask & SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_SAMPLEBITS)
link->symmetric_samplebits =
flags & SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_SAMPLEBITS ?
1 : 0;
if (flag_mask & SND_SOC_TPLG_LNK_FLGBIT_VOICE_WAKEUP)
link->ignore_suspend =
flags & SND_SOC_TPLG_LNK_FLGBIT_VOICE_WAKEUP ?
1 : 0;
}
/* create the FE DAI link */
static int soc_tplg_fe_link_create(struct soc_tplg *tplg,
struct snd_soc_tplg_pcm *pcm)
{
struct snd_soc_dai_link *link;
int ret;
link = kzalloc(sizeof(struct snd_soc_dai_link), GFP_KERNEL);
if (link == NULL)
return -ENOMEM;
if (strlen(pcm->pcm_name)) {
link->name = kstrdup(pcm->pcm_name, GFP_KERNEL);
link->stream_name = kstrdup(pcm->pcm_name, GFP_KERNEL);
}
link->id = pcm->pcm_id;
if (strlen(pcm->dai_name))
link->cpu_dai_name = kstrdup(pcm->dai_name, GFP_KERNEL);
link->codec_name = "snd-soc-dummy";
link->codec_dai_name = "snd-soc-dummy-dai";
/* enable DPCM */
link->dynamic = 1;
link->dpcm_playback = pcm->playback;
link->dpcm_capture = pcm->capture;
if (pcm->flag_mask)
set_link_flags(link, pcm->flag_mask, pcm->flags);
/* pass control to component driver for optional further init */
ret = soc_tplg_dai_link_load(tplg, link);
if (ret < 0) {
dev_err(tplg->comp->dev, "ASoC: FE link loading failed\n");
kfree(link);
return ret;
}
link->dobj.index = tplg->index;
link->dobj.ops = tplg->ops;
link->dobj.type = SND_SOC_DOBJ_DAI_LINK;
list_add(&link->dobj.list, &tplg->comp->dobj_list);
snd_soc_add_dai_link(tplg->comp->card, link);
return 0;
}
/* create a FE DAI and DAI link from the PCM object */
static int soc_tplg_pcm_create(struct soc_tplg *tplg,
struct snd_soc_tplg_pcm *pcm)
{
int ret;
ret = soc_tplg_dai_create(tplg, pcm);
if (ret < 0)
return ret;
return soc_tplg_fe_link_create(tplg, pcm);
}
/* copy stream caps from the old version 4 of source */
static void stream_caps_new_ver(struct snd_soc_tplg_stream_caps *dest,
struct snd_soc_tplg_stream_caps_v4 *src)
{
dest->size = sizeof(*dest);
memcpy(dest->name, src->name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
dest->formats = src->formats;
dest->rates = src->rates;
dest->rate_min = src->rate_min;
dest->rate_max = src->rate_max;
dest->channels_min = src->channels_min;
dest->channels_max = src->channels_max;
dest->periods_min = src->periods_min;
dest->periods_max = src->periods_max;
dest->period_size_min = src->period_size_min;
dest->period_size_max = src->period_size_max;
dest->buffer_size_min = src->buffer_size_min;
dest->buffer_size_max = src->buffer_size_max;
}
/**
* pcm_new_ver - Create the new version of PCM from the old version.
* @tplg: topology context
* @src: older version of pcm as a source
* @pcm: latest version of pcm created from the source
*
* Support from vesion 4. User should free the returned pcm manually.
*/
static int pcm_new_ver(struct soc_tplg *tplg,
struct snd_soc_tplg_pcm *src,
struct snd_soc_tplg_pcm **pcm)
{
struct snd_soc_tplg_pcm *dest;
struct snd_soc_tplg_pcm_v4 *src_v4;
int i;
*pcm = NULL;
if (src->size != sizeof(*src_v4)) {
dev_err(tplg->dev, "ASoC: invalid PCM size\n");
return -EINVAL;
}
dev_warn(tplg->dev, "ASoC: old version of PCM\n");
src_v4 = (struct snd_soc_tplg_pcm_v4 *)src;
dest = kzalloc(sizeof(*dest), GFP_KERNEL);
if (!dest)
return -ENOMEM;
dest->size = sizeof(*dest); /* size of latest abi version */
memcpy(dest->pcm_name, src_v4->pcm_name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
memcpy(dest->dai_name, src_v4->dai_name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
dest->pcm_id = src_v4->pcm_id;
dest->dai_id = src_v4->dai_id;
dest->playback = src_v4->playback;
dest->capture = src_v4->capture;
dest->compress = src_v4->compress;
dest->num_streams = src_v4->num_streams;
for (i = 0; i < dest->num_streams; i++)
memcpy(&dest->stream[i], &src_v4->stream[i],
sizeof(struct snd_soc_tplg_stream));
for (i = 0; i < 2; i++)
stream_caps_new_ver(&dest->caps[i], &src_v4->caps[i]);
*pcm = dest;
return 0;
}
static int soc_tplg_pcm_elems_load(struct soc_tplg *tplg,
struct snd_soc_tplg_hdr *hdr)
{
struct snd_soc_tplg_pcm *pcm, *_pcm;
int count = hdr->count;
int i, err;
bool abi_match;
if (tplg->pass != SOC_TPLG_PASS_PCM_DAI)
return 0;
/* check the element size and count */
pcm = (struct snd_soc_tplg_pcm *)tplg->pos;
if (pcm->size > sizeof(struct snd_soc_tplg_pcm)
|| pcm->size < sizeof(struct snd_soc_tplg_pcm_v4)) {
dev_err(tplg->dev, "ASoC: invalid size %d for PCM elems\n",
pcm->size);
return -EINVAL;
}
if (soc_tplg_check_elem_count(tplg,
pcm->size, count,
hdr->payload_size, "PCM DAI")) {
dev_err(tplg->dev, "ASoC: invalid count %d for PCM DAI elems\n",
count);
return -EINVAL;
}
for (i = 0; i < count; i++) {
pcm = (struct snd_soc_tplg_pcm *)tplg->pos;
/* check ABI version by size, create a new version of pcm
* if abi not match.
*/
if (pcm->size == sizeof(*pcm)) {
abi_match = true;
_pcm = pcm;
} else {
abi_match = false;
err = pcm_new_ver(tplg, pcm, &_pcm);
}
/* create the FE DAIs and DAI links */
soc_tplg_pcm_create(tplg, _pcm);
/* offset by version-specific struct size and
* real priv data size
*/
tplg->pos += pcm->size + _pcm->priv.size;
if (!abi_match)
kfree(_pcm); /* free the duplicated one */
}
dev_dbg(tplg->dev, "ASoC: adding %d PCM DAIs\n", count);
return 0;
}
/**
* set_link_hw_format - Set the HW audio format of the physical DAI link.
* @tplg: topology context
* @cfg: physical link configs.
*
* Topology context contains a list of supported HW formats (configs) and
* a default format ID for the physical link. This function will use this
* default ID to choose the HW format to set the link's DAI format for init.
*/
static void set_link_hw_format(struct snd_soc_dai_link *link,
struct snd_soc_tplg_link_config *cfg)
{
struct snd_soc_tplg_hw_config *hw_config;
unsigned char bclk_master, fsync_master;
unsigned char invert_bclk, invert_fsync;
int i;
for (i = 0; i < cfg->num_hw_configs; i++) {
hw_config = &cfg->hw_config[i];
if (hw_config->id != cfg->default_hw_config_id)
continue;
link->dai_fmt = hw_config->fmt & SND_SOC_DAIFMT_FORMAT_MASK;
/* clock signal polarity */
invert_bclk = hw_config->invert_bclk;
invert_fsync = hw_config->invert_fsync;
if (!invert_bclk && !invert_fsync)
link->dai_fmt |= SND_SOC_DAIFMT_NB_NF;
else if (!invert_bclk && invert_fsync)
link->dai_fmt |= SND_SOC_DAIFMT_NB_IF;
else if (invert_bclk && !invert_fsync)
link->dai_fmt |= SND_SOC_DAIFMT_IB_NF;
else
link->dai_fmt |= SND_SOC_DAIFMT_IB_IF;
/* clock masters */
bclk_master = hw_config->bclk_master;
fsync_master = hw_config->fsync_master;
if (!bclk_master && !fsync_master)
link->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
else if (bclk_master && !fsync_master)
link->dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
else if (!bclk_master && fsync_master)
link->dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
else
link->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
}
}
/**
* link_new_ver - Create a new physical link config from the old
* version of source.
* @toplogy: topology context
* @src: old version of phyical link config as a source
* @link: latest version of physical link config created from the source
*
* Support from vesion 4. User need free the returned link config manually.
*/
static int link_new_ver(struct soc_tplg *tplg,
struct snd_soc_tplg_link_config *src,
struct snd_soc_tplg_link_config **link)
{
struct snd_soc_tplg_link_config *dest;
struct snd_soc_tplg_link_config_v4 *src_v4;
int i;
*link = NULL;
if (src->size != sizeof(struct snd_soc_tplg_link_config_v4)) {
dev_err(tplg->dev, "ASoC: invalid physical link config size\n");
return -EINVAL;
}
dev_warn(tplg->dev, "ASoC: old version of physical link config\n");
src_v4 = (struct snd_soc_tplg_link_config_v4 *)src;
dest = kzalloc(sizeof(*dest), GFP_KERNEL);
if (!dest)
return -ENOMEM;
dest->size = sizeof(*dest);
dest->id = src_v4->id;
dest->num_streams = src_v4->num_streams;
for (i = 0; i < dest->num_streams; i++)
memcpy(&dest->stream[i], &src_v4->stream[i],
sizeof(struct snd_soc_tplg_stream));
*link = dest;
return 0;
}
/* Find and configure an existing physical DAI link */
static int soc_tplg_link_config(struct soc_tplg *tplg,
struct snd_soc_tplg_link_config *cfg)
{
struct snd_soc_dai_link *link;
const char *name, *stream_name;
size_t len;
int ret;
len = strnlen(cfg->name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
if (len == SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
return -EINVAL;
else if (len)
name = cfg->name;
else
name = NULL;
len = strnlen(cfg->stream_name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
if (len == SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
return -EINVAL;
else if (len)
stream_name = cfg->stream_name;
else
stream_name = NULL;
link = snd_soc_find_dai_link(tplg->comp->card, cfg->id,
name, stream_name);
if (!link) {
dev_err(tplg->dev, "ASoC: physical link %s (id %d) not exist\n",
name, cfg->id);
return -EINVAL;
}
/* hw format */
if (cfg->num_hw_configs)
set_link_hw_format(link, cfg);
/* flags */
if (cfg->flag_mask)
set_link_flags(link, cfg->flag_mask, cfg->flags);
/* pass control to component driver for optional further init */
ret = soc_tplg_dai_link_load(tplg, link);
if (ret < 0) {
dev_err(tplg->dev, "ASoC: physical link loading failed\n");
return ret;
}
return 0;
}
/* Load physical link config elements from the topology context */
static int soc_tplg_link_elems_load(struct soc_tplg *tplg,
struct snd_soc_tplg_hdr *hdr)
{
struct snd_soc_tplg_link_config *link, *_link;
int count = hdr->count;
int i, ret;
bool abi_match;
if (tplg->pass != SOC_TPLG_PASS_LINK) {
tplg->pos += hdr->size + hdr->payload_size;
return 0;
};
/* check the element size and count */
link = (struct snd_soc_tplg_link_config *)tplg->pos;
if (link->size > sizeof(struct snd_soc_tplg_link_config)
|| link->size < sizeof(struct snd_soc_tplg_link_config_v4)) {
dev_err(tplg->dev, "ASoC: invalid size %d for physical link elems\n",
link->size);
return -EINVAL;
}
if (soc_tplg_check_elem_count(tplg,
link->size, count,
hdr->payload_size, "physical link config")) {
dev_err(tplg->dev, "ASoC: invalid count %d for physical link elems\n",
count);
return -EINVAL;
}
/* config physical DAI links */
for (i = 0; i < count; i++) {
link = (struct snd_soc_tplg_link_config *)tplg->pos;
if (link->size == sizeof(*link)) {
abi_match = true;
_link = link;
} else {
abi_match = false;
ret = link_new_ver(tplg, link, &_link);
if (ret < 0)
return ret;
}
ret = soc_tplg_link_config(tplg, _link);
if (ret < 0)
return ret;
/* offset by version-specific struct size and
* real priv data size
*/
tplg->pos += link->size + _link->priv.size;
if (!abi_match)
kfree(_link); /* free the duplicated one */
}
return 0;
}
/**
* soc_tplg_dai_config - Find and configure an existing physical DAI.
* @tplg: topology context
* @d: physical DAI configs.
*
* The physical dai should already be registered by the platform driver.
* The platform driver should specify the DAI name and ID for matching.
*/
static int soc_tplg_dai_config(struct soc_tplg *tplg,
struct snd_soc_tplg_dai *d)
{
struct snd_soc_dai_link_component dai_component = {0};
struct snd_soc_dai *dai;
struct snd_soc_dai_driver *dai_drv;
struct snd_soc_pcm_stream *stream;
struct snd_soc_tplg_stream_caps *caps;
int ret;
dai_component.dai_name = d->dai_name;
dai = snd_soc_find_dai(&dai_component);
if (!dai) {
dev_err(tplg->dev, "ASoC: physical DAI %s not registered\n",
d->dai_name);
return -EINVAL;
}
if (d->dai_id != dai->id) {
dev_err(tplg->dev, "ASoC: physical DAI %s id mismatch\n",
d->dai_name);
return -EINVAL;
}
dai_drv = dai->driver;
if (!dai_drv)
return -EINVAL;
if (d->playback) {
stream = &dai_drv->playback;
caps = &d->caps[SND_SOC_TPLG_STREAM_PLAYBACK];
set_stream_info(stream, caps);
}
if (d->capture) {
stream = &dai_drv->capture;
caps = &d->caps[SND_SOC_TPLG_STREAM_CAPTURE];
set_stream_info(stream, caps);
}
if (d->flag_mask)
set_dai_flags(dai_drv, d->flag_mask, d->flags);
/* pass control to component driver for optional further init */
ret = soc_tplg_dai_load(tplg, dai_drv);
if (ret < 0) {
dev_err(tplg->comp->dev, "ASoC: DAI loading failed\n");
return ret;
}
return 0;
}
/* load physical DAI elements */
static int soc_tplg_dai_elems_load(struct soc_tplg *tplg,
struct snd_soc_tplg_hdr *hdr)
{
struct snd_soc_tplg_dai *dai;
int count = hdr->count;
int i;
if (tplg->pass != SOC_TPLG_PASS_BE_DAI)
return 0;
/* config the existing BE DAIs */
for (i = 0; i < count; i++) {
dai = (struct snd_soc_tplg_dai *)tplg->pos;
if (dai->size != sizeof(*dai)) {
dev_err(tplg->dev, "ASoC: invalid physical DAI size\n");
return -EINVAL;
}
soc_tplg_dai_config(tplg, dai);
tplg->pos += (sizeof(*dai) + dai->priv.size);
}
dev_dbg(tplg->dev, "ASoC: Configure %d BE DAIs\n", count);
return 0;
}
/**
* manifest_new_ver - Create a new version of manifest from the old version
* of source.
* @toplogy: topology context
* @src: old version of manifest as a source
* @manifest: latest version of manifest created from the source
*
* Support from vesion 4. Users need free the returned manifest manually.
*/
static int manifest_new_ver(struct soc_tplg *tplg,
struct snd_soc_tplg_manifest *src,
struct snd_soc_tplg_manifest **manifest)
{
struct snd_soc_tplg_manifest *dest;
struct snd_soc_tplg_manifest_v4 *src_v4;
*manifest = NULL;
if (src->size != sizeof(*src_v4)) {
dev_err(tplg->dev, "ASoC: invalid manifest size\n");
return -EINVAL;
}
dev_warn(tplg->dev, "ASoC: old version of manifest\n");
src_v4 = (struct snd_soc_tplg_manifest_v4 *)src;
dest = kzalloc(sizeof(*dest) + src_v4->priv.size, GFP_KERNEL);
if (!dest)
return -ENOMEM;
dest->size = sizeof(*dest); /* size of latest abi version */
dest->control_elems = src_v4->control_elems;
dest->widget_elems = src_v4->widget_elems;
dest->graph_elems = src_v4->graph_elems;
dest->pcm_elems = src_v4->pcm_elems;
dest->dai_link_elems = src_v4->dai_link_elems;
dest->priv.size = src_v4->priv.size;
if (dest->priv.size)
memcpy(dest->priv.data, src_v4->priv.data,
src_v4->priv.size);
*manifest = dest;
return 0;
}
static int soc_tplg_manifest_load(struct soc_tplg *tplg,
struct snd_soc_tplg_hdr *hdr)
{
struct snd_soc_tplg_manifest *manifest, *_manifest;
bool abi_match;
int err;
if (tplg->pass != SOC_TPLG_PASS_MANIFEST)
return 0;
manifest = (struct snd_soc_tplg_manifest *)tplg->pos;
/* check ABI version by size, create a new manifest if abi not match */
if (manifest->size == sizeof(*manifest)) {
abi_match = true;
_manifest = manifest;
} else {
abi_match = false;
err = manifest_new_ver(tplg, manifest, &_manifest);
if (err < 0)
return err;
}
/* pass control to component driver for optional further init */
if (tplg->comp && tplg->ops && tplg->ops->manifest)
return tplg->ops->manifest(tplg->comp, _manifest);
if (!abi_match) /* free the duplicated one */
kfree(_manifest);
return 0;
}
/* validate header magic, size and type */
static int soc_valid_header(struct soc_tplg *tplg,
struct snd_soc_tplg_hdr *hdr)
{
if (soc_tplg_get_hdr_offset(tplg) >= tplg->fw->size)
return 0;
if (hdr->size != sizeof(*hdr)) {
dev_err(tplg->dev,
"ASoC: invalid header size for type %d at offset 0x%lx size 0x%zx.\n",
hdr->type, soc_tplg_get_hdr_offset(tplg),
tplg->fw->size);
return -EINVAL;
}
/* big endian firmware objects not supported atm */
if (hdr->magic == cpu_to_be32(SND_SOC_TPLG_MAGIC)) {
dev_err(tplg->dev,
"ASoC: pass %d big endian not supported header got %x at offset 0x%lx size 0x%zx.\n",
tplg->pass, hdr->magic,
soc_tplg_get_hdr_offset(tplg), tplg->fw->size);
return -EINVAL;
}
if (hdr->magic != SND_SOC_TPLG_MAGIC) {
dev_err(tplg->dev,
"ASoC: pass %d does not have a valid header got %x at offset 0x%lx size 0x%zx.\n",
tplg->pass, hdr->magic,
soc_tplg_get_hdr_offset(tplg), tplg->fw->size);
return -EINVAL;
}
/* Support ABI from version 4 */
if (hdr->abi > SND_SOC_TPLG_ABI_VERSION
|| hdr->abi < SND_SOC_TPLG_ABI_VERSION_MIN) {
dev_err(tplg->dev,
"ASoC: pass %d invalid ABI version got 0x%x need 0x%x at offset 0x%lx size 0x%zx.\n",
tplg->pass, hdr->abi,
SND_SOC_TPLG_ABI_VERSION, soc_tplg_get_hdr_offset(tplg),
tplg->fw->size);
return -EINVAL;
}
if (hdr->payload_size == 0) {
dev_err(tplg->dev, "ASoC: header has 0 size at offset 0x%lx.\n",
soc_tplg_get_hdr_offset(tplg));
return -EINVAL;
}
if (tplg->pass == hdr->type)
dev_dbg(tplg->dev,
"ASoC: Got 0x%x bytes of type %d version %d vendor %d at pass %d\n",
hdr->payload_size, hdr->type, hdr->version,
hdr->vendor_type, tplg->pass);
return 1;
}
/* check header type and call appropriate handler */
static int soc_tplg_load_header(struct soc_tplg *tplg,
struct snd_soc_tplg_hdr *hdr)
{
tplg->pos = tplg->hdr_pos + sizeof(struct snd_soc_tplg_hdr);
/* check for matching ID */
if (hdr->index != tplg->req_index &&
hdr->index != SND_SOC_TPLG_INDEX_ALL)
return 0;
tplg->index = hdr->index;
switch (hdr->type) {
case SND_SOC_TPLG_TYPE_MIXER:
case SND_SOC_TPLG_TYPE_ENUM:
case SND_SOC_TPLG_TYPE_BYTES:
return soc_tplg_kcontrol_elems_load(tplg, hdr);
case SND_SOC_TPLG_TYPE_DAPM_GRAPH:
return soc_tplg_dapm_graph_elems_load(tplg, hdr);
case SND_SOC_TPLG_TYPE_DAPM_WIDGET:
return soc_tplg_dapm_widget_elems_load(tplg, hdr);
case SND_SOC_TPLG_TYPE_PCM:
return soc_tplg_pcm_elems_load(tplg, hdr);
case SND_SOC_TPLG_TYPE_DAI:
return soc_tplg_dai_elems_load(tplg, hdr);
case SND_SOC_TPLG_TYPE_DAI_LINK:
case SND_SOC_TPLG_TYPE_BACKEND_LINK:
/* physical link configurations */
return soc_tplg_link_elems_load(tplg, hdr);
case SND_SOC_TPLG_TYPE_MANIFEST:
return soc_tplg_manifest_load(tplg, hdr);
default:
/* bespoke vendor data object */
return soc_tplg_vendor_load(tplg, hdr);
}
return 0;
}
/* process the topology file headers */
static int soc_tplg_process_headers(struct soc_tplg *tplg)
{
struct snd_soc_tplg_hdr *hdr;
int ret;
tplg->pass = SOC_TPLG_PASS_START;
/* process the header types from start to end */
while (tplg->pass <= SOC_TPLG_PASS_END) {
tplg->hdr_pos = tplg->fw->data;
hdr = (struct snd_soc_tplg_hdr *)tplg->hdr_pos;
while (!soc_tplg_is_eof(tplg)) {
/* make sure header is valid before loading */
ret = soc_valid_header(tplg, hdr);
if (ret < 0)
return ret;
else if (ret == 0)
break;
/* load the header object */
ret = soc_tplg_load_header(tplg, hdr);
if (ret < 0)
return ret;
/* goto next header */
tplg->hdr_pos += hdr->payload_size +
sizeof(struct snd_soc_tplg_hdr);
hdr = (struct snd_soc_tplg_hdr *)tplg->hdr_pos;
}
/* next data type pass */
tplg->pass++;
}
/* signal DAPM we are complete */
ret = soc_tplg_dapm_complete(tplg);
if (ret < 0)
dev_err(tplg->dev,
"ASoC: failed to initialise DAPM from Firmware\n");
return ret;
}
static int soc_tplg_load(struct soc_tplg *tplg)
{
int ret;
ret = soc_tplg_process_headers(tplg);
if (ret == 0)
soc_tplg_complete(tplg);
return ret;
}
/* load audio component topology from "firmware" file */
int snd_soc_tplg_component_load(struct snd_soc_component *comp,
struct snd_soc_tplg_ops *ops, const struct firmware *fw, u32 id)
{
struct soc_tplg tplg;
/* setup parsing context */
memset(&tplg, 0, sizeof(tplg));
tplg.fw = fw;
tplg.dev = comp->dev;
tplg.comp = comp;
tplg.ops = ops;
tplg.req_index = id;
tplg.io_ops = ops->io_ops;
tplg.io_ops_count = ops->io_ops_count;
tplg.bytes_ext_ops = ops->bytes_ext_ops;
tplg.bytes_ext_ops_count = ops->bytes_ext_ops_count;
return soc_tplg_load(&tplg);
}
EXPORT_SYMBOL_GPL(snd_soc_tplg_component_load);
/* remove this dynamic widget */
void snd_soc_tplg_widget_remove(struct snd_soc_dapm_widget *w)
{
/* make sure we are a widget */
if (w->dobj.type != SND_SOC_DOBJ_WIDGET)
return;
remove_widget(w->dapm->component, &w->dobj, SOC_TPLG_PASS_WIDGET);
}
EXPORT_SYMBOL_GPL(snd_soc_tplg_widget_remove);
/* remove all dynamic widgets from this DAPM context */
void snd_soc_tplg_widget_remove_all(struct snd_soc_dapm_context *dapm,
u32 index)
{
struct snd_soc_dapm_widget *w, *next_w;
list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
/* make sure we are a widget with correct context */
if (w->dobj.type != SND_SOC_DOBJ_WIDGET || w->dapm != dapm)
continue;
/* match ID */
if (w->dobj.index != index &&
w->dobj.index != SND_SOC_TPLG_INDEX_ALL)
continue;
/* check and free and dynamic widget kcontrols */
snd_soc_tplg_widget_remove(w);
snd_soc_dapm_free_widget(w);
}
snd_soc_dapm_reset_cache(dapm);
}
EXPORT_SYMBOL_GPL(snd_soc_tplg_widget_remove_all);
/* remove dynamic controls from the component driver */
int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index)
{
struct snd_soc_dobj *dobj, *next_dobj;
int pass = SOC_TPLG_PASS_END;
/* process the header types from end to start */
while (pass >= SOC_TPLG_PASS_START) {
/* remove mixer controls */
list_for_each_entry_safe(dobj, next_dobj, &comp->dobj_list,
list) {
/* match index */
if (dobj->index != index &&
dobj->index != SND_SOC_TPLG_INDEX_ALL)
continue;
switch (dobj->type) {
case SND_SOC_DOBJ_MIXER:
remove_mixer(comp, dobj, pass);
break;
case SND_SOC_DOBJ_ENUM:
remove_enum(comp, dobj, pass);
break;
case SND_SOC_DOBJ_BYTES:
remove_bytes(comp, dobj, pass);
break;
case SND_SOC_DOBJ_WIDGET:
remove_widget(comp, dobj, pass);
break;
case SND_SOC_DOBJ_PCM:
remove_dai(comp, dobj, pass);
break;
case SND_SOC_DOBJ_DAI_LINK:
remove_link(comp, dobj, pass);
break;
default:
dev_err(comp->dev, "ASoC: invalid component type %d for removal\n",
dobj->type);
break;
}
}
pass--;
}
/* let caller know if FW can be freed when no objects are left */
return !list_empty(&comp->dobj_list);
}
EXPORT_SYMBOL_GPL(snd_soc_tplg_component_remove);
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