linux-imx

/*

 *  Bluetooth supports for Qualcomm Atheros chips

 *

 *  Copyright (c) 2015 The Linux Foundation. All rights reserved.

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License version 2

 *  as published by the Free Software Foundation

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 */

#include <linux/module.h>

#include <linux/firmware.h>

​

#include <net/bluetooth/bluetooth.h>

#include <net/bluetooth/hci_core.h>

​

#include "btqca.h"

​

#define VERSION "0.1"

​

int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version)

{

    struct sk_buff *skb;

    struct edl_event_hdr *edl;

    struct rome_version *ver;

    char cmd;

    int err = 0;

​

    bt_dev_dbg(hdev, "QCA Version Request");

​

    cmd = EDL_PATCH_VER_REQ_CMD;

    skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,

                &cmd, HCI_EV_VENDOR, HCI_INIT_TIMEOUT);

    if (IS_ERR(skb)) {

        err = PTR_ERR(skb);

        bt_dev_err(hdev, "Reading QCA version information failed (%d)",

               err);

        return err;

    }

​

    if (skb->len != sizeof(*edl) + sizeof(*ver)) {

        bt_dev_err(hdev, "QCA Version size mismatch len %d", skb->len);

        err = -EILSEQ;

        goto out;

    }

​

    edl = (struct edl_event_hdr *)(skb->data);

    if (!edl) {

        bt_dev_err(hdev, "QCA TLV with no header");

        err = -EILSEQ;

        goto out;

    }

​

    if (edl->cresp != EDL_CMD_REQ_RES_EVT ||

        edl->rtype != EDL_APP_VER_RES_EVT) {

        bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,

               edl->rtype);

        err = -EIO;

        goto out;

    }

​

    ver = (struct rome_version *)(edl->data);

​

    BT_DBG("%s: Product:0x%08x", hdev->name, le32_to_cpu(ver->product_id));

    BT_DBG("%s: Patch  :0x%08x", hdev->name, le16_to_cpu(ver->patch_ver));

    BT_DBG("%s: ROM    :0x%08x", hdev->name, le16_to_cpu(ver->rome_ver));

    BT_DBG("%s: SOC    :0x%08x", hdev->name, le32_to_cpu(ver->soc_id));

​

    /* QCA chipset version can be decided by patch and SoC

     * version, combination with upper 2 bytes from SoC

     * and lower 2 bytes from patch will be used.

     */

    *soc_version = (le32_to_cpu(ver->soc_id) << 16) |

            (le16_to_cpu(ver->rome_ver) & 0x0000ffff);

    if (*soc_version == 0)

        err = -EILSEQ;

​

out:

    kfree_skb(skb);

    if (err)

        bt_dev_err(hdev, "QCA Failed to get version (%d)", err);

​

    return err;