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lib/nhlt: add helper functions for adding endpoints

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In order to ease the porting of supporting NHLT endpoints
introduce a nhlt_endpoint_descriptor structure as well as
corresponding helper functions.

Change-Id: I68edaf681b4e60502f6ddbbd04de21d8aa072296
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/15486
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
This commit is contained in:
Aaron Durbin
2016-06-28 14:59:21 -05:00
parent 78461a9d55
commit ed0f6d7cb7
2 changed files with 96 additions and 1 deletions
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60
src/lib/nhlt.c
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@@ -24,6 +24,7 @@
#define NHLT_RID 1
#define NHLT_SSID 1
#define WAVEFORMAT_TAG 0xfffe
#define DEFAULT_VIRTUAL_BUS_ID 0
static const struct sub_format pcm_subformat = {
.data1 = 0x00000001,
@@ -68,7 +69,7 @@ struct nhlt_endpoint *nhlt_add_endpoint(struct nhlt *nhlt, int link_type,
endp->subsystem_id = NHLT_SSID;
endp->device_type = device_type;
endp->direction = dir;
endp->virtual_bus_id = 0;
endp->virtual_bus_id = DEFAULT_VIRTUAL_BUS_ID;
nhlt->num_endpoints++;
@@ -437,3 +438,60 @@ uintptr_t nhlt_serialize_oem_overrides(struct nhlt *nhlt,
return acpi_addr;
}
static int _nhlt_add_single_endpoint(struct nhlt *nhlt, int virtual_bus_id,
const struct nhlt_endp_descriptor *epd)
{
struct nhlt_endpoint *endp;
endp = nhlt_add_endpoint(nhlt, epd->link, epd->device, epd->direction,
epd->vid, epd->did);
if (endp == NULL)
return -1;
endp->virtual_bus_id = virtual_bus_id;
if (nhlt_endpoint_append_config(endp, epd->cfg, epd->cfg_size))
return -1;
if (nhlt_endpoint_add_formats(endp, epd->formats, epd->num_formats))
return -1;
return 0;
}
static int _nhlt_add_endpoints(struct nhlt *nhlt, int virtual_bus_id,
const struct nhlt_endp_descriptor *epds,
size_t num_epds)
{
size_t i;
for (i = 0; i < num_epds; i++)
if (_nhlt_add_single_endpoint(nhlt, virtual_bus_id, &epds[i]))
return -1;
return 0;
}
int nhlt_add_endpoints(struct nhlt *nhlt,
const struct nhlt_endp_descriptor *epds,
size_t num_epds)
{
int ret;
ret = _nhlt_add_endpoints(nhlt, DEFAULT_VIRTUAL_BUS_ID, epds, num_epds);
return ret;
}
int nhlt_add_ssp_endpoints(struct nhlt *nhlt, int virtual_bus_id,
const struct nhlt_endp_descriptor *epds, size_t num_epds)
{
int ret;
ret = _nhlt_add_endpoints(nhlt, virtual_bus_id, epds, num_epds);
if (!ret)
nhlt_next_instance(nhlt, NHLT_LINK_SSP);
return ret;
}