BCM chips may require configuration of PCM to operate correctly and
there is a vendor specific HCI command to do this. Add support in the
hci_bcm driver to parse this from devicetree and configure the chip.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@xxxxxxxxxxxx>
---
Changes in v4: None
Changes in v3: None
Changes in v2: None
drivers/bluetooth/hci_bcm.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index 6134bff58748..4ee0b45be7e2 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -88,6 +88,8 @@ struct bcm_device_data {
* used to disable flow control during runtime suspend and system sleep
* @is_suspended: whether flow control is currently disabled
* @disallow_set_baudrate: don't allow set_baudrate
+ * @has_pcm_params: whether PCM parameters need to be configured
+ * @pcm_params: PCM and routing parameters
*/
struct bcm_device {
/* Must be the first member, hci_serdev.c expects this. */
@@ -122,6 +124,9 @@ struct bcm_device {
bool is_suspended;
#endif
bool disallow_set_baudrate;
+
+ bool has_pcm_params;
+ struct bcm_set_pcm_int_params pcm_params;
};
/* generic bcm uart resources */
@@ -596,6 +601,16 @@ static int bcm_setup(struct hci_uart *hu)
host_set_baudrate(hu, speed);
}
+ /* PCM parameters if any*/
+ if (bcm->dev && bcm->dev->has_pcm_params) {
+ err = btbcm_set_pcm_int_params(hu->hdev, &bcm->dev->pcm_params);
+
+ if (err) {
+ bt_dev_info(hu->hdev, "BCM: Set pcm params failed (%d)",
+ err);
+ }
+ }
+
finalize:
release_firmware(fw);
@@ -1132,7 +1147,24 @@ static int bcm_acpi_probe(struct bcm_device *dev)
static int bcm_of_probe(struct bcm_device *bdev)
{
+ int err;
+
device_property_read_u32(bdev->dev, "max-speed", &bdev->oper_speed);
+
+ err = device_property_read_u8(bdev->dev, "brcm,bt-sco-routing",
+ &bdev->pcm_params.routing);
+ if (!err)
+ bdev->has_pcm_params = true;
+
+ device_property_read_u8(bdev->dev, "brcm,pcm-interface-rate",
+ &bdev->pcm_params.rate);
+ device_property_read_u8(bdev->dev, "brcm,pcm-frame-type",
+ &bdev->pcm_params.frame_sync);
+ device_property_read_u8(bdev->dev, "brcm,pcm-sync-mode",
+ &bdev->pcm_params.sync_mode);
+ device_property_read_u8(bdev->dev, "brcm,pcm-clock-mode",
+ &bdev->pcm_params.clock_mode);
+
return 0;
}
--
2.24.0.rc1.363.gb1bccd3e3d-goog
