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-rw-r--r--include/uapi/sound/asoc.h19
-rw-r--r--sound/soc/soc-topology.c58
2 files changed, 54 insertions, 23 deletions
diff --git a/include/uapi/sound/asoc.h b/include/uapi/sound/asoc.h
index 2819fc1f8458..aa3a79b42438 100644
--- a/include/uapi/sound/asoc.h
+++ b/include/uapi/sound/asoc.h
@@ -137,11 +137,19 @@ struct snd_soc_tplg_private {
/*
* Kcontrol TLV data.
*/
+struct snd_soc_tplg_tlv_dbscale {
+ __le32 min;
+ __le32 step;
+ __le32 mute;
+} __attribute__((packed));
+
struct snd_soc_tplg_ctl_tlv {
- __le32 size; /* in bytes aligned to 4 */
- __le32 numid; /* control element numeric identification */
- __le32 count; /* number of elem in data array */
- __le32 data[SND_SOC_TPLG_TLV_SIZE];
+ __le32 size; /* in bytes of this structure */
+ __le32 type; /* SNDRV_CTL_TLVT_*, type of TLV */
+ union {
+ __le32 data[SND_SOC_TPLG_TLV_SIZE];
+ struct snd_soc_tplg_tlv_dbscale scale;
+ };
} __attribute__((packed));
/*
@@ -172,7 +180,7 @@ struct snd_soc_tplg_ctl_hdr {
char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
__le32 access;
struct snd_soc_tplg_kcontrol_ops_id ops;
- __le32 tlv_size; /* non zero means control has TLV data */
+ struct snd_soc_tplg_ctl_tlv tlv;
} __attribute__((packed));
/*
@@ -260,7 +268,6 @@ struct snd_soc_tplg_mixer_control {
__le32 invert;
__le32 num_channels;
struct snd_soc_tplg_channel channel[SND_SOC_TPLG_MAX_CHAN];
- struct snd_soc_tplg_ctl_tlv tlv;
struct snd_soc_tplg_private priv;
} __attribute__((packed));
diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index 2c70f30d2d78..31068b8f3db0 100644
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -33,6 +33,7 @@
#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)
@@ -579,28 +580,51 @@ static int soc_tplg_init_kcontrol(struct soc_tplg *tplg,
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_tlv *tplg_tlv)
+ struct snd_kcontrol_new *kc, struct snd_soc_tplg_ctl_hdr *tc)
{
- struct snd_ctl_tlv *tlv;
- int size;
+ struct snd_soc_tplg_ctl_tlv *tplg_tlv;
- if (tplg_tlv->count == 0)
+ if (!(tc->access & SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE))
return 0;
- size = ((tplg_tlv->count + (sizeof(unsigned int) - 1)) &
- ~(sizeof(unsigned int) - 1));
- tlv = kzalloc(sizeof(*tlv) + size, GFP_KERNEL);
- if (tlv == NULL)
- return -ENOMEM;
-
- dev_dbg(tplg->dev, " created TLV type %d size %d bytes\n",
- tplg_tlv->numid, size);
+ if (tc->access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
+ kc->tlv.c = snd_soc_bytes_tlv_callback;
+ } else {
+ 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);
- tlv->numid = tplg_tlv->numid;
- tlv->length = size;
- memcpy(&tlv->tlv[0], tplg_tlv->data, size);
- kc->tlv.p = (void *)tlv;
+ /* TODO: add support for other TLV types */
+ default:
+ dev_dbg(tplg->dev, "Unsupported TLV type %d\n",
+ tplg_tlv->type);
+ return -EINVAL;
+ }
+ }
return 0;
}
@@ -772,7 +796,7 @@ static int soc_tplg_dmixer_create(struct soc_tplg *tplg, unsigned int count,
}
/* create any TLV data */
- soc_tplg_create_tlv(tplg, &kc, &mc->tlv);
+ soc_tplg_create_tlv(tplg, &kc, &mc->hdr);
/* register control here */
err = soc_tplg_add_kcontrol(tplg, &kc,