Bluetooth: btqca: Add support to read FW build version for WCN3991 BTSoC

Add support to read FW build version from debugfs node.
This info can be read from
/sys/kernel/debug/bluetooth/hci0/firmware_info

Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
index f85a55a..f6256a3 100644 (file)
--- a/drivers/bluetooth/btqca.c
+++ b/drivers/bluetooth/btqca.c
@@ -94,6 +94,53 @@ out:
 }
 EXPORT_SYMBOL_GPL(qca_read_soc_version);
 
+static int qca_read_fw_build_info(struct hci_dev *hdev)
+{
+       struct sk_buff *skb;
+       struct edl_event_hdr *edl;
+       char cmd, build_label[QCA_FW_BUILD_VER_LEN];
+       int build_lbl_len, err = 0;
+
+       bt_dev_dbg(hdev, "QCA read fw build info");
+
+       cmd = EDL_GET_BUILD_INFO_CMD;
+       skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
+                               &cmd, 0, HCI_INIT_TIMEOUT);
+       if (IS_ERR(skb)) {
+               err = PTR_ERR(skb);
+               bt_dev_err(hdev, "Reading QCA fw build info failed (%d)",
+                          err);
+               return err;
+       }
+
+       edl = (struct edl_event_hdr *)(skb->data);
+       if (!edl) {
+               bt_dev_err(hdev, "QCA read fw build info with no header");
+               err = -EILSEQ;
+               goto out;
+       }
+
+       if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
+           edl->rtype != EDL_GET_BUILD_INFO_CMD) {
+               bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
+                          edl->rtype);
+               err = -EIO;
+               goto out;
+       }
+
+       build_lbl_len = edl->data[0];
+       if (build_lbl_len <= QCA_FW_BUILD_VER_LEN - 1) {
+               memcpy(build_label, edl->data + 1, build_lbl_len);
+               *(build_label + build_lbl_len) = '\0';
+       }
+
+       hci_set_fw_info(hdev, "%s", build_label);
+
+out:
+       kfree_skb(skb);
+       return err;
+}
+
 static int qca_send_reset(struct hci_dev *hdev)
 {
        struct sk_buff *skb;
@@ -524,6 +571,13 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
                return err;
        }
 
+       if (soc_type == QCA_WCN3991) {
+               /* get fw build info */
+               err = qca_read_fw_build_info(hdev);
+               if (err < 0)
+                       return err;
+       }
+
        bt_dev_info(hdev, "QCA setup on UART is completed");
 
        return 0;

diff --git a/drivers/bluetooth/btqca.h b/drivers/bluetooth/btqca.h
index e73b8f8..b19add7 100644 (file)
--- a/drivers/bluetooth/btqca.h
+++ b/drivers/bluetooth/btqca.h
@@ -11,6 +11,7 @@
 #define EDL_PATCH_CMD_LEN              (1)
 #define EDL_PATCH_VER_REQ_CMD          (0x19)
 #define EDL_PATCH_TLV_REQ_CMD          (0x1E)
+#define EDL_GET_BUILD_INFO_CMD         (0x20)
 #define EDL_NVM_ACCESS_SET_REQ_CMD     (0x01)
 #define MAX_SIZE_PER_TLV_SEGMENT       (243)
 #define QCA_PRE_SHUTDOWN_CMD           (0xFC08)