From: Mengdong Lin mengdong.lin@linux.intel.com

This patch adds support for old version 4 of PCMs (FE DAI & DAI links).

Topology ABI v5 added new fields to stream caps and thus changed PCMs. Since user space may still uses v4, kernel will check the ABI version by comparing the object size. If user space uses v4 of PCMs, kernel will create the latest version of PCMs from the old version, and use the new version internally to create FE DAI & DAI links. Because these new created PCM elements will be freed later, kernel need duplicate the name strings of DAI driver and DAI links when creating them.

Signed-off-by: Mengdong Lin mengdong.lin@linux.intel.com

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c index c832b24..0f1c8eb 100644 --- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -53,7 +53,6 @@ #define SOC_TPLG_PASS_START SOC_TPLG_PASS_MANIFEST #define SOC_TPLG_PASS_END SOC_TPLG_PASS_BE_DAI

- /* * Old version of ABI structs, supported for backward compatibility. */ @@ -69,6 +68,39 @@ struct snd_soc_tplg_manifest_v4 { 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; + /* topology context */ struct soc_tplg { const struct firmware *fw; @@ -491,6 +523,7 @@ static void remove_dai(struct snd_soc_component *comp, if (dobj->ops && dobj->ops->dai_unload) dobj->ops->dai_unload(comp, dobj);

+ kfree(dai_drv->name); list_del(&dobj->list); kfree(dai_drv); } @@ -508,6 +541,10 @@ static void remove_link(struct snd_soc_component *comp, 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); @@ -1606,7 +1643,8 @@ static int soc_tplg_dai_create(struct soc_tplg *tplg, if (dai_drv == NULL) return -ENOMEM;

- dai_drv->name = pcm->dai_name; + if (strlen(pcm->dai_name)) + dai_drv->name = kstrdup(pcm->dai_name, GFP_KERNEL); dai_drv->id = pcm->dai_id;

if (pcm->playback) { @@ -1649,11 +1687,15 @@ static int soc_tplg_link_create(struct soc_tplg *tplg, if (link == NULL) return -ENOMEM;

- link->name = pcm->pcm_name; - link->stream_name = pcm->pcm_name; + 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;

- link->cpu_dai_name = pcm->dai_name; + 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";

@@ -1692,38 +1734,127 @@ static int soc_tplg_pcm_create(struct soc_tplg *tplg, return soc_tplg_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; + struct snd_soc_tplg_pcm *pcm, *_pcm; int count = hdr->count; - int i; + 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, - sizeof(struct snd_soc_tplg_pcm), count, + pcm->size, count, hdr->payload_size, "PCM DAI")) { dev_err(tplg->dev, "ASoC: invalid count %d for PCM DAI elems\n", count); return -EINVAL; }

- /* create the FE DAIs and DAI links */ - pcm = (struct snd_soc_tplg_pcm *)tplg->pos; for (i = 0; i < count; i++) { - if (pcm->size != sizeof(*pcm)) { - dev_err(tplg->dev, "ASoC: invalid pcm size\n"); - return -EINVAL; + 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); }

- soc_tplg_pcm_create(tplg, pcm); - pcm++; + /* create the FE DAIs and DAI links */ + soc_tplg_pcm_create(tplg, _pcm); + + if (!abi_match) + kfree(_pcm); /* free the duplicated one */ + + tplg->pos += pcm->size; /* offset by version-specific size */ }

dev_dbg(tplg->dev, "ASoC: adding %d PCM DAIs\n", count); - tplg->pos += sizeof(struct snd_soc_tplg_pcm) * count;

return 0; }

From: Mengdong Lin mengdong.lin@linux.intel.com

This is the remaining update to PCM ABI object of version 5.

The flags will be applied to FE (Front End) links and can also be used by physical links. The private data is reserved for future extension, so offset update will add the private data size.

Now user space is using ABI v4, and the previous patch "ASoC: topology: make PCM backward compatible from ABI v4" can assure the backward compatibility.

Signed-off-by: Mengdong Lin mengdong.lin@linux.intel.com

diff --git a/include/uapi/sound/asoc.h b/include/uapi/sound/asoc.h index ed9090f..4fcc44d 100644 --- a/include/uapi/sound/asoc.h +++ b/include/uapi/sound/asoc.h @@ -131,6 +131,13 @@ #define SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_CHANNELS (1 << 1) #define SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_SAMPLEBITS (1 << 2)

+/* DAI link flags */ +#define SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_RATES (1 << 0) +#define SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_CHANNELS (1 << 1) +#define SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_SAMPLEBITS (1 << 2) +#define SND_SOC_TPLG_LNK_FLGBIT_IGNORE_SUSPEND (1 << 3) +#define SND_SOC_TPLG_LNK_FLGBIT_IGNORE_POWERDOWN_TIME (1 << 4) + /* * Block Header. * This header precedes all object and object arrays below. @@ -441,6 +448,9 @@ struct snd_soc_tplg_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 caps[2]; /* playback and capture for DAI */ + __le32 flag_mask; /* bitmask of flags to configure */ + __le32 flags; /* SND_SOC_TPLG_LNK_FLGBIT_* flag value */ + struct snd_soc_tplg_private priv; } __attribute__((packed));

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c index 2f9b64e..62d8a73 100644 --- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -1676,6 +1676,32 @@ static int soc_tplg_dai_create(struct soc_tplg *tplg, 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_IGNORE_SUSPEND) + link->ignore_suspend = + flags & SND_SOC_TPLG_LNK_FLGBIT_IGNORE_SUSPEND ? 1 : 0; + + if (flag_mask & SND_SOC_TPLG_LNK_FLGBIT_IGNORE_POWERDOWN_TIME) + link->ignore_pmdown_time = + flags & SND_SOC_TPLG_LNK_FLGBIT_IGNORE_POWERDOWN_TIME ? 1 : 0; + + 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; +} + /* create the FE DAI link */ static int soc_tplg_link_create(struct soc_tplg *tplg, struct snd_soc_tplg_pcm *pcm) @@ -1703,6 +1729,8 @@ static int soc_tplg_link_create(struct soc_tplg *tplg, 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); @@ -1848,10 +1876,14 @@ static int soc_tplg_pcm_elems_load(struct soc_tplg *tplg, /* 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 */ - - tplg->pos += pcm->size; /* offset by version-specific size */ }

dev_dbg(tplg->dev, "ASoC: adding %d PCM DAIs\n", count);

From: Mengdong Lin mengdong.lin@linux.intel.com

The following fields are added to physical link configuration struct (snd_soc_tplg_link_config) in ABI v5:

- name and stream name Topology will use them to find an existing physical link and configure it.

- HW configurations Define the types and ABI struct for runtime supported hardware configs of physical DAI links, e.g. audio hardware formats. The default HW config ID will help topology to find the DAI format to set on init. Topology provides this as a fallback if such HW settings are not available in ACPI or device tree, to avoid hard code in drivers. It's only for config items that can be programmed by SW or FW, not for physical things like link connections or GPIO used for HP etc.

- flags and private data The flags will be used to configure an existing physical DAI link. The private data is reserved for future extension.

NOTE: Current kernel has no support for physical links. A later patch will add support for configuring physical links and make the support backward compatible for ABI v4.

Signed-off-by: Mengdong Lin mengdong.lin@linux.intel.com

diff --git a/include/uapi/sound/asoc.h b/include/uapi/sound/asoc.h index a686c88..ae2284c 100644 --- a/include/uapi/sound/asoc.h +++ b/include/uapi/sound/asoc.h @@ -39,6 +39,11 @@ */ #define SND_SOC_TPLG_STREAM_CONFIG_MAX 8

+/* + * Maximum number of physical link's hardware configs + */ +#define SND_SOC_TPLG_HW_CONFIG_MAX 8 + /* individual kcontrol info types - can be mixed with other types */ #define SND_SOC_TPLG_CTL_VOLSW 1 #define SND_SOC_TPLG_CTL_VOLSW_SX 2 @@ -296,6 +301,35 @@ struct snd_soc_tplg_stream { __le32 channels; /* channels */ } __attribute__((packed));

+ +/* + * Describes a physical link's runtime supported hardware config, + * i.e. hardware audio formats. + */ +struct snd_soc_tplg_hw_config { + __le32 size; /* in bytes of this structure */ + __le32 id; /* unique ID - - used to match */ + __le32 fmt; /* SND_SOC_DAI_FORMAT_ format value */ + __u8 clock_gated; /* 1 if clock can be gated to save power */ + __u8 invert_bclk; /* 1 for inverted BCLK, 0 for normal */ + __u8 invert_fsync; /* 1 for inverted frame clock, 0 for normal */ + __u8 bclk_master; /* 1 for master of BCLK, 0 for slave */ + __u8 fsync_master; /* 1 for master of FSYNC, 0 for slave */ + __u8 mclk_direction; /* 0 for input, 1 for output */ + __le16 reserved; /* for 32bit alignment */ + __le32 mclk_rate; /* MCLK or SYSCLK freqency in Hz */ + __le32 bclk_rate; /* BCLK freqency in Hz */ + __le32 fsync_rate; /* frame clock in Hz */ + __le32 tdm_slots; /* number of TDM slots in use */ + __le32 tdm_slot_width; /* width in bits for each slot */ + __le32 tx_slots; /* bit mask for active Tx slots */ + __le32 rx_slots; /* bit mask for active Rx slots */ + __le32 tx_channels; /* number of Tx channels */ + __le32 tx_chanmap[SND_SOC_TPLG_MAX_CHAN]; /* array of slot number */ + __le32 rx_channels; /* number of Rx channels */ + __le32 rx_chanmap[SND_SOC_TPLG_MAX_CHAN]; /* array of slot number */ +} __attribute__((packed)); + /* * Manifest. List totals for each payload type. Not used in parsing, but will * be passed to the component driver before any other objects in order for any @@ -470,9 +504,9 @@ struct snd_soc_tplg_pcm {

/* - * Describes the BE or CC link runtime supported configs or params + * Describes the physical link runtime supported configs or params * - * File block representation for BE/CC link config :- + * File block representation for physical link config :- * +-----------------------------------+-----+ * | struct snd_soc_tplg_hdr | 1 | * +-----------------------------------+-----+ @@ -482,8 +516,16 @@ struct snd_soc_tplg_pcm { struct snd_soc_tplg_link_config { __le32 size; /* in bytes of this structure */ __le32 id; /* unique ID - used to match */ + char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; /* name - used to match */ + char stream_name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; /* stream name - 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 */ + struct snd_soc_tplg_hw_config hw_config[SND_SOC_TPLG_HW_CONFIG_MAX]; /* hw configs */ + __le32 num_hw_configs; /* number of hw configs */ + __le32 default_hw_config_id; /* default hw config ID for init */ + __le32 flag_mask; /* bitmask of flags to configure */ + __le32 flags; /* SND_SOC_TPLG_LNK_FLGBIT_* flag value */ + struct snd_soc_tplg_private priv; } __attribute__((packed));

/*

From: Mengdong Lin mengdong.lin@linux.intel.com

Topology will find an existing physical link (including BE link for DPCM) by checking its ID, name and stream name, and configure its physical audio format and flags.

This support is backward compatible for old ABI v4.

Signed-off-by: Mengdong Lin mengdong.lin@linux.intel.com

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c index 62d8a73..2964e39 100644 --- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -49,9 +49,10 @@ #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_BE_DAI +#define SOC_TPLG_PASS_END SOC_TPLG_PASS_LINK

/* * Old version of ABI structs, supported for backward compatibility. @@ -101,6 +102,14 @@ struct snd_soc_tplg_pcm_v4 { 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; @@ -1876,7 +1885,6 @@ static int soc_tplg_pcm_elems_load(struct soc_tplg *tplg, /* create the FE DAIs and DAI links */ soc_tplg_pcm_create(tplg, _pcm);

- /* offset by version-specific struct size and * real priv data size */ @@ -1891,6 +1899,196 @@ static int soc_tplg_pcm_elems_load(struct soc_tplg *tplg, 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; + int ret; + + name = strlen(cfg->name) ? cfg->name : NULL; + stream_name = strlen(cfg->stream_name) ? cfg->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_be_dai_config - Find and configure an existing BE DAI. * @tplg: topology context @@ -2140,6 +2338,10 @@ static int soc_tplg_load_header(struct soc_tplg *tplg, return soc_tplg_pcm_elems_load(tplg, hdr); case SND_SOC_TPLG_TYPE_BE_DAI: return soc_tplg_be_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:

From: Mengdong Lin mengdong.lin@linux.intel.com

Rename the ABI struct and type because they are for configuring physical DAIs, not only backend DAIs since users may not need DPCM - Rename type SND_SOC_TPLG_TYPE_BE_DAI to SND_SOC_TPLG_TYPE_DAI. - Rename count of DAIs in manifest from be_dai_elems to dai_elems. - Rename struct snd_soc_tplg_be_dai to snd_soc_tplg_dai.

This code refactoring is backward compatible, because both layout of the DAI element struct and type value have no change, so kernel can find the same type value and map to same data layout.

The offset of DAI count in manifest does not change, just a name change, so kernel can get the same count value. This count is informative, neither topology core nor device drivers use it atm.

Signed-off-by: Mengdong Lin mengdong.lin@linux.intel.com

diff --git a/include/uapi/sound/asoc.h b/include/uapi/sound/asoc.h index ae2284c..24c817c 100644 --- a/include/uapi/sound/asoc.h +++ b/include/uapi/sound/asoc.h @@ -111,8 +111,8 @@ #define SND_SOC_TPLG_TYPE_CODEC_LINK 9 #define SND_SOC_TPLG_TYPE_BACKEND_LINK 10 #define SND_SOC_TPLG_TYPE_PDATA 11 -#define SND_SOC_TPLG_TYPE_BE_DAI 12 -#define SND_SOC_TPLG_TYPE_MAX SND_SOC_TPLG_TYPE_BE_DAI +#define SND_SOC_TPLG_TYPE_DAI 12 +#define SND_SOC_TPLG_TYPE_MAX SND_SOC_TPLG_TYPE_DAI

/* vendor block IDs - please add new vendor types to end */ #define SND_SOC_TPLG_TYPE_VENDOR_FW 1000 @@ -131,7 +131,7 @@ #define SND_SOC_TPLG_TUPLE_TYPE_WORD 4 #define SND_SOC_TPLG_TUPLE_TYPE_SHORT 5

-/* BE DAI flags */ +/* DAI flags */ #define SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_RATES (1 << 0) #define SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_CHANNELS (1 << 1) #define SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_SAMPLEBITS (1 << 2) @@ -349,7 +349,7 @@ struct snd_soc_tplg_manifest { __le32 graph_elems; /* number of graph elements */ __le32 pcm_elems; /* number of PCM elements */ __le32 dai_link_elems; /* number of DAI link elements */ - __le32 be_dai_elems; /* number of BE DAI elements */ + __le32 dai_elems; /* number of physical DAI elements */ __le32 reserved[20]; /* reserved for new ABI element types */ struct snd_soc_tplg_private priv; } __attribute__((packed)); @@ -529,16 +529,17 @@ struct snd_soc_tplg_link_config { } __attribute__((packed));

/* - * Describes SW/FW specific features of BE DAI. + * Describes SW/FW specific features of physical DAI. + * It can be used to configure backend DAIs for DPCM. * - * File block representation for BE DAI :- + * File block representation for physical DAI :- * +-----------------------------------+-----+ * | struct snd_soc_tplg_hdr | 1 | * +-----------------------------------+-----+ - * | struct snd_soc_tplg_be_dai | N | + * | struct snd_soc_tplg_dai | N | * +-----------------------------------+-----+ */ -struct snd_soc_tplg_be_dai { +struct snd_soc_tplg_dai { __le32 size; /* in bytes of this structure */ char dai_name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; /* name - used to match */ __le32 dai_id; /* unique ID - used to match */ diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c index 4285ebe..706a907 100644 --- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -2098,7 +2098,7 @@ static int soc_tplg_link_elems_load(struct soc_tplg *tplg, * platform driver should specify the BE DAI name and ID for matching. */ static int soc_tplg_be_dai_config(struct soc_tplg *tplg, - struct snd_soc_tplg_be_dai *be) + struct snd_soc_tplg_dai *be) { struct snd_soc_dai_link_component dai_component = {0}; struct snd_soc_dai *dai; @@ -2153,7 +2153,7 @@ static int soc_tplg_be_dai_config(struct soc_tplg *tplg, static int soc_tplg_be_dai_elems_load(struct soc_tplg *tplg, struct snd_soc_tplg_hdr *hdr) { - struct snd_soc_tplg_be_dai *be; + struct snd_soc_tplg_dai *be; int count = hdr->count; int i;

@@ -2162,7 +2162,7 @@ static int soc_tplg_be_dai_elems_load(struct soc_tplg *tplg,

/* config the existing BE DAIs */ for (i = 0; i < count; i++) { - be = (struct snd_soc_tplg_be_dai *)tplg->pos; + be = (struct snd_soc_tplg_dai *)tplg->pos; if (be->size != sizeof(*be)) { dev_err(tplg->dev, "ASoC: invalid BE DAI size\n"); return -EINVAL; @@ -2336,7 +2336,7 @@ static int soc_tplg_load_header(struct soc_tplg *tplg, 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_BE_DAI: + case SND_SOC_TPLG_TYPE_DAI: return soc_tplg_be_dai_elems_load(tplg, hdr); case SND_SOC_TPLG_TYPE_DAI_LINK: case SND_SOC_TPLG_TYPE_BACKEND_LINK: