Commit 7df04ea7 authored by Ranjani Sridharan's avatar Ranjani Sridharan Committed by Mark Brown

ASoC: topology: modify dapm route loading routine and add dapm route unloading

struct snd_soc_dapm_route has been modified to be a dynamic
object so that it can be used to save driver specific
data while parsing topology and clean up
driver-specific data during driver unloading.

This patch makes the following changes to accomplish the above:
1. Set the dobj member of snd_soc_dapm_route during the
SOC_TPLG_PASS_GRAPH pass of topology parsing.
2. Add the remove_route() routine that will be called while
removing all dynamic objects from the component driver.
Signed-off-by: default avatarRanjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 5c30f43f
...@@ -433,6 +433,23 @@ static void remove_bytes(struct snd_soc_component *comp, ...@@ -433,6 +433,23 @@ static void remove_bytes(struct snd_soc_component *comp,
kfree(sb); kfree(sb);
} }
/* remove a route */
static void remove_route(struct snd_soc_component *comp,
struct snd_soc_dobj *dobj, int pass)
{
struct snd_soc_dapm_route *route =
container_of(dobj, struct snd_soc_dapm_route, dobj);
if (pass != SOC_TPLG_PASS_GRAPH)
return;
if (dobj->ops && dobj->ops->dapm_route_unload)
dobj->ops->dapm_route_unload(comp, dobj);
list_del(&dobj->list);
kfree(route);
}
/* remove a widget and it's kcontrols - routes must be removed first */ /* remove a widget and it's kcontrols - routes must be removed first */
static void remove_widget(struct snd_soc_component *comp, static void remove_widget(struct snd_soc_component *comp,
struct snd_soc_dobj *dobj, int pass) struct snd_soc_dobj *dobj, int pass)
...@@ -1119,9 +1136,10 @@ static int soc_tplg_dapm_graph_elems_load(struct soc_tplg *tplg, ...@@ -1119,9 +1136,10 @@ static int soc_tplg_dapm_graph_elems_load(struct soc_tplg *tplg,
struct snd_soc_tplg_hdr *hdr) struct snd_soc_tplg_hdr *hdr)
{ {
struct snd_soc_dapm_context *dapm = &tplg->comp->dapm; struct snd_soc_dapm_context *dapm = &tplg->comp->dapm;
struct snd_soc_dapm_route route;
struct snd_soc_tplg_dapm_graph_elem *elem; struct snd_soc_tplg_dapm_graph_elem *elem;
int count = hdr->count, i; struct snd_soc_dapm_route **routes;
int count = hdr->count, i, j;
int ret = 0;
if (tplg->pass != SOC_TPLG_PASS_GRAPH) { if (tplg->pass != SOC_TPLG_PASS_GRAPH) {
tplg->pos += hdr->size + hdr->payload_size; tplg->pos += hdr->size + hdr->payload_size;
...@@ -1140,36 +1158,85 @@ static int soc_tplg_dapm_graph_elems_load(struct soc_tplg *tplg, ...@@ -1140,36 +1158,85 @@ static int soc_tplg_dapm_graph_elems_load(struct soc_tplg *tplg,
dev_dbg(tplg->dev, "ASoC: adding %d DAPM routes for index %d\n", count, dev_dbg(tplg->dev, "ASoC: adding %d DAPM routes for index %d\n", count,
hdr->index); hdr->index);
/* allocate memory for pointer to array of dapm routes */
routes = kcalloc(count, sizeof(struct snd_soc_dapm_route *),
GFP_KERNEL);
if (!routes)
return -ENOMEM;
/*
* allocate memory for each dapm route in the array.
* This needs to be done individually so that
* each route can be freed when it is removed in remove_route().
*/
for (i = 0; i < count; i++) {
routes[i] = kzalloc(sizeof(*routes[i]), GFP_KERNEL);
if (!routes[i]) {
/* free previously allocated memory */
for (j = 0; j < i; j++)
kfree(routes[j]);
kfree(routes);
return -ENOMEM;
}
}
for (i = 0; i < count; i++) { for (i = 0; i < count; i++) {
elem = (struct snd_soc_tplg_dapm_graph_elem *)tplg->pos; elem = (struct snd_soc_tplg_dapm_graph_elem *)tplg->pos;
tplg->pos += sizeof(struct snd_soc_tplg_dapm_graph_elem); tplg->pos += sizeof(struct snd_soc_tplg_dapm_graph_elem);
/* validate routes */ /* validate routes */
if (strnlen(elem->source, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) == if (strnlen(elem->source, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN) SNDRV_CTL_ELEM_ID_NAME_MAXLEN) {
return -EINVAL; ret = -EINVAL;
break;
}
if (strnlen(elem->sink, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) == if (strnlen(elem->sink, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN) SNDRV_CTL_ELEM_ID_NAME_MAXLEN) {
return -EINVAL; ret = -EINVAL;
break;
}
if (strnlen(elem->control, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) == if (strnlen(elem->control, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
SNDRV_CTL_ELEM_ID_NAME_MAXLEN) SNDRV_CTL_ELEM_ID_NAME_MAXLEN) {
return -EINVAL; ret = -EINVAL;
break;
}
routes[i]->source = elem->source;
routes[i]->sink = elem->sink;
route.source = elem->source; /* set to NULL atm for tplg users */
route.sink = elem->sink; routes[i]->connected = NULL;
route.connected = NULL; /* set to NULL atm for tplg users */
if (strnlen(elem->control, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) == 0) if (strnlen(elem->control, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) == 0)
route.control = NULL; routes[i]->control = NULL;
else else
route.control = elem->control; routes[i]->control = elem->control;
soc_tplg_add_route(tplg, &route); /* add route dobj to dobj_list */
routes[i]->dobj.type = SND_SOC_DOBJ_GRAPH;
routes[i]->dobj.ops = tplg->ops;
routes[i]->dobj.index = tplg->index;
list_add(&routes[i]->dobj.list, &tplg->comp->dobj_list);
soc_tplg_add_route(tplg, routes[i]);
/* add route, but keep going if some fail */ /* add route, but keep going if some fail */
snd_soc_dapm_add_routes(dapm, &route, 1); snd_soc_dapm_add_routes(dapm, routes[i], 1);
} }
return 0; /* free memory allocated for all dapm routes in case of error */
if (ret < 0)
for (i = 0; i < count ; i++)
kfree(routes[i]);
/*
* free pointer to array of dapm routes as this is no longer needed.
* The memory allocated for each dapm route will be freed
* when it is removed in remove_route().
*/
kfree(routes);
return ret;
} }
static struct snd_kcontrol_new *soc_tplg_dapm_widget_dmixer_create( static struct snd_kcontrol_new *soc_tplg_dapm_widget_dmixer_create(
...@@ -2570,6 +2637,9 @@ int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index) ...@@ -2570,6 +2637,9 @@ int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index)
case SND_SOC_DOBJ_BYTES: case SND_SOC_DOBJ_BYTES:
remove_bytes(comp, dobj, pass); remove_bytes(comp, dobj, pass);
break; break;
case SND_SOC_DOBJ_GRAPH:
remove_route(comp, dobj, pass);
break;
case SND_SOC_DOBJ_WIDGET: case SND_SOC_DOBJ_WIDGET:
remove_widget(comp, dobj, pass); remove_widget(comp, dobj, pass);
break; break;
......
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