New patch to review for coreboot: lib/nhlt: Extend NHLT function library

[Saurabh Satija]

Saurabh Satija ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/15464

-gerrit

commit dc55345849936db925696bbb01b9a5ce4fa54ea1
Author: Saurabh Satija 
Date:   Tue Jun 28 00:35:14 2016 -0700

lib/nhlt: Extend NHLT function library

Add NHLT library function defintions to lib/nhlt.c. This adds
    nhlt_soc_add_endpoint(), nhlt_soc_serialiaze() and
    nhlt_soc_serialize_oem_overrides(). These functions are used by
    NHLT helper functions to add dmic and different audio codecs for
    an SoC/mainboard.

Change-Id: I96b7369eb7ca2ac2edacf3d942a201b92a5363f4
    Signed-off-by: Saurabh Satija 
---
 src/lib/nhlt.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)

diff --git a/src/lib/nhlt.c b/src/lib/nhlt.c
index e31803d..348c08e 100644
--- a/src/lib/nhlt.c
+++ b/src/lib/nhlt.c
@@ -524,3 +524,69 @@ int nhlt_add_codec_on_ssp(struct nhlt *nhlt, int hwlink,

return 0;
 }
+
+struct nhlt_endpoint *nhlt_soc_add_endpoint(struct nhlt *nhlt, int soc_hwintf,
+                                                int soc_devtype, int dir)
+{
+	int nhlt_link_type;
+	int nhlt_dev_type;
+	uint16_t did;
+	struct nhlt_endpoint *endp;
+
+	nhlt_link_type = nhlt_soc_get_link_type(soc_hwintf, soc_devtype);
+
+	if (nhlt_link_type == -1)
+		return NULL;
+
+	switch (soc_devtype) {
+	case AUDIO_DEV_I2S:
+		nhlt_dev_type = NHLT_SSP_DEV_I2S;
+		did = NHLT_DID_SSP;
+		break;
+	case AUDIO_DEV_DMIC:
+		nhlt_dev_type = NHLT_PDM_DEV;
+		did = NHLT_DID_DMIC;
+		break;
+	case AUDIO_DEV_BT:
+		nhlt_dev_type = NHLT_SSP_DEV_BT;
+		did = NHLT_DID_BT;
+		break;
+	default:
+		return NULL;
+	}
+
+	endp = nhlt_add_endpoint(nhlt, nhlt_link_type, nhlt_dev_type, dir,
+				 NHLT_VID, did);
+
+	if (endp == NULL)
+		return NULL;
+
+	/* Virtual bus id of SSP link is the hardware port id. */
+	if (nhlt_link_type == NHLT_LINK_SSP)
+		endp->virtual_bus_id = soc_hwintf;
+
+	return endp;
+}
+
+uintptr_t nhlt_soc_serialize(struct nhlt *nhlt, uintptr_t acpi_addr)
+{
+	return nhlt_soc_serialize_oem_overrides(nhlt, acpi_addr, NULL, NULL);
+}
+
+uintptr_t nhlt_soc_serialize_oem_overrides(struct nhlt *nhlt,
+	uintptr_t acpi_addr, const char *oem_id, const char *oem_table_id)
+{
+	struct global_nvs_t *gnvs;
+
+	gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS);
+
+	if (gnvs == NULL)
+		return acpi_addr;
+
+	/* Update NHLT GNVS Data */
+	gnvs->nhla = (uintptr_t)acpi_addr;
+	gnvs->nhll = nhlt_current_size(nhlt);
+
+	return nhlt_serialize_oem_overrides(nhlt, acpi_addr, oem_id,
+				oem_table_id);
+}