* [RFC/RFT PATCH 2/2] rtk_btusb: A new driver for the Bluetooth portion of the Realtek RTL8723AE chip
[not found] ` <1365469068-4548-1-git-send-email-Larry.Finger-tQ5ms3gMjBLk1uMJSBkQmQ@public.gmane.org>
@ 2013-04-09 0:57 ` Larry Finger
2013-04-18 22:22 ` Gustavo Padovan
0 siblings, 1 reply; 6+ messages in thread
From: Larry Finger @ 2013-04-09 0:57 UTC (permalink / raw)
To: linville-2XuSBdqkA4R54TAoqtyWWQ
Cc: linux-wireless-u79uwXL29TY76Z2rM5mHXA, Larry Finger,
netdev-u79uwXL29TY76Z2rM5mHXA, marcel-kz+m5ild9QBg9hUCZPvPmw,
gustavo-THi1TnShQwVAfugRpC6u6w,
johan.hedberg-Re5JQEeQqe8AvxtiuMwx3w,
linux-bluetooth-u79uwXL29TY76Z2rM5mHXA,
champion_chen-kXabqFNEczNtrwSWzY7KCg
This driver is similar to btusb, and uses as much of that code as possible.
Those parts that are unique are provided here.
Signed-off-by: Larry Finger <Larry.Finger-tQ5ms3gMjBLk1uMJSBkQmQ@public.gmane.org>
---
drivers/bluetooth/Kconfig | 10 +
drivers/bluetooth/Makefile | 1 +
drivers/bluetooth/rtk_btusb.c | 974 ++++++++++++++++++++++++++++++++++++++++++
drivers/bluetooth/rtk_btusb.h | 102 +++++
4 files changed, 1087 insertions(+)
create mode 100644 drivers/bluetooth/rtk_btusb.c
create mode 100644 drivers/bluetooth/rtk_btusb.h
diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
index fdfd61a..11a9e80 100644
--- a/drivers/bluetooth/Kconfig
+++ b/drivers/bluetooth/Kconfig
@@ -242,4 +242,14 @@ config BT_WILINK
Say Y here to compile support for Texas Instrument's WiLink7 driver
into the kernel or say M to compile it as module.
+
+config BT_RTKUSB
+ tristate "Realtek BT driver for RTL8723AE"
+ select FW_LOADER
+ help
+ This enables the Bluetooth driver for the Realtek RTL8723AE Wifi/BT
+ combo device.
+
+ Say Y here to compile support for these devices into the kernel
+ or say M to build it as a module.
endmenu
diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile
index 4afae20..167ccc0 100644
--- a/drivers/bluetooth/Makefile
+++ b/drivers/bluetooth/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_BT_ATH3K) += ath3k.o
obj-$(CONFIG_BT_MRVL) += btmrvl.o
obj-$(CONFIG_BT_MRVL_SDIO) += btmrvl_sdio.o
obj-$(CONFIG_BT_WILINK) += btwilink.o
+obj-$(CONFIG_BT_RTKUSB) += rtk_btusb.o
btmrvl-y := btmrvl_main.o
btmrvl-$(CONFIG_DEBUG_FS) += btmrvl_debugfs.o
diff --git a/drivers/bluetooth/rtk_btusb.c b/drivers/bluetooth/rtk_btusb.c
new file mode 100644
index 0000000..9a12855
--- /dev/null
+++ b/drivers/bluetooth/rtk_btusb.c
@@ -0,0 +1,974 @@
+/*
+ *
+ * Realtek Bluetooth USB driver
+ *
+ * Copyright (C) 2012-2013 Edward Bian <edward_bian-kXabqFNEczNtrwSWzY7KCg@public.gmane.org>
+ *
+ * Parts of this routine are copied and modified from btusb, the
+ * Generic Bluetooth USB driver. In addition, several of the routines
+ * in btusb are used directly. The btusb code is
+ * Copyright (C) 2005-2008 Marcel Holtmann <marcel-kz+m5ild9QBg9hUCZPvPmw@public.gmane.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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/usb.h>
+#include <linux/firmware.h>
+#include <linux/suspend.h>
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include <linux/completion.h>
+#include <linux/version.h>
+#include <linux/pm_runtime.h>
+
+#include "btusb.h"
+#include "rtk_btusb.h"
+
+#define VERSION "0.8"
+
+static struct usb_driver btusb_driver;
+
+static struct patch_info patch_table[] = {
+ {0, 0x1200, "rtl_bt/rtl8723a.bin", "rtk8723_bt_config", NULL, 0}
+};
+
+static LIST_HEAD(dev_data_list);
+
+/*******************************/
+
+static struct usb_device_id btusb_table[] = {
+ {USB_DEVICE(0x0bda, 0x8723)},
+ { }
+};
+
+/*******************************/
+
+MODULE_DEVICE_TABLE(usb, btusb_table);
+
+static int send_hci_cmd(struct xchange_data *xdata)
+{
+ int ret_val;
+
+ ret_val = usb_control_msg(
+ xdata->dev_entry->udev, xdata->pipe_out,
+ 0, USB_TYPE_CLASS, 0, 0,
+ (void *)(xdata->send_pkt),
+ xdata->pkt_len, MSG_TO);
+
+ return ret_val;
+}
+
+static int rcv_hci_evt(struct xchange_data *xdata)
+{
+ int ret_len, ret_val;
+ int i;
+
+ while (1) {
+ for (i = 0; i < 5; i++) {
+ /* Try to send USB interrupt message 5 times. */
+ ret_val = usb_interrupt_msg(
+ xdata->dev_entry->udev, xdata->pipe_in,
+ (void *)(xdata->rcv_pkt), PKT_LEN,
+ &ret_len, MSG_TO);
+ if (ret_val >= 0)
+ break;
+ }
+ if (ret_val < 0)
+ return ret_val;
+
+ if (CMD_CMP_EVT == xdata->evt_hdr->evt) {
+ if (xdata->cmd_hdr->opcode == xdata->cmd_cmp->opcode)
+ return ret_len;
+ }
+ }
+}
+
+static int download_data(struct xchange_data *xdata)
+{
+ struct download_cp *cmd_para;
+ struct download_rp *evt_para;
+ uint8_t *pcur;
+ int pkt_len, frag_num, frag_len;
+ int i, ret_val;
+
+ cmd_para = (struct download_cp *)xdata->req_para;
+ evt_para = (struct download_rp *)xdata->rsp_para;
+ pcur = xdata->fw_data;
+ pkt_len = CMD_HDR_LEN + sizeof(struct download_cp);
+ frag_num = xdata->fw_len / PATCH_SEG_MAX + 1;
+ frag_len = PATCH_SEG_MAX;
+
+ for (i = 0; i < frag_num; i++) {
+ cmd_para->index = i;
+ if (i == (frag_num - 1)) {
+ cmd_para->index |= DATA_END;
+ frag_len = xdata->fw_len % PATCH_SEG_MAX;
+ pkt_len -= (PATCH_SEG_MAX - frag_len);
+ }
+ xdata->cmd_hdr->opcode = cpu_to_le16(DOWNLOAD_OPCODE);
+ xdata->cmd_hdr->plen = sizeof(uint8_t) + frag_len;
+ xdata->pkt_len = pkt_len;
+ memcpy(cmd_para->data, pcur, frag_len);
+
+ ret_val = send_hci_cmd(xdata);
+ if (ret_val < 0)
+ return ret_val;
+
+ ret_val = rcv_hci_evt(xdata);
+ if (ret_val < 0)
+ return ret_val;
+ if (0 != evt_para->status)
+ return -1;
+
+ pcur += PATCH_SEG_MAX;
+ }
+
+ return xdata->fw_len;
+}
+
+static struct dev_data *dev_data_find(struct usb_interface *intf)
+{
+ struct dev_data *dev_entry;
+
+ list_for_each_entry(dev_entry, &dev_data_list, list_node) {
+ if (dev_entry->intf == intf)
+ return dev_entry;
+ }
+
+ return NULL;
+}
+
+static void init_xdata(struct xchange_data *xdata, struct dev_data *dev_entry)
+{
+ memset(xdata, 0, sizeof(struct xchange_data));
+ xdata->dev_entry = dev_entry;
+ xdata->pipe_in = usb_rcvintpipe(dev_entry->udev, INTR_EP);
+ xdata->pipe_out = usb_sndctrlpipe(dev_entry->udev, CTRL_EP);
+ xdata->cmd_hdr = (struct hci_command_hdr *)(xdata->send_pkt);
+ xdata->evt_hdr = (struct hci_event_hdr *)(xdata->rcv_pkt);
+ xdata->cmd_cmp = (struct hci_ev_cmd_complete *)(xdata->rcv_pkt +
+ EVT_HDR_LEN);
+ xdata->req_para = xdata->send_pkt + CMD_HDR_LEN;
+ xdata->rsp_para = xdata->rcv_pkt + EVT_HDR_LEN + CMD_CMP_LEN;
+}
+
+static int check_fw_version(struct xchange_data *xdata)
+{
+ struct hci_rp_read_local_version *read_ver_rsp;
+ struct patch_info *patch_entry;
+ int ret_val;
+
+ xdata->cmd_hdr->opcode = cpu_to_le16(HCI_OP_READ_LOCAL_VERSION);
+ xdata->cmd_hdr->plen = 0;
+ xdata->pkt_len = CMD_HDR_LEN;
+
+ ret_val = send_hci_cmd(xdata);
+ if (ret_val < 0)
+ goto version_end;
+
+ ret_val = rcv_hci_evt(xdata);
+ if (ret_val < 0)
+ goto version_end;
+
+ patch_entry = xdata->dev_entry->patch_entry;
+ read_ver_rsp = (struct hci_rp_read_local_version *)(xdata->rsp_para);
+ BT_DBG("check_fw_version : read_ver_rsp->lmp_subver = 0x%x",
+ le16_to_cpu(read_ver_rsp->lmp_subver));
+ if (patch_entry->lmp_sub != le16_to_cpu(read_ver_rsp->lmp_subver))
+ return 1;
+
+ ret_val = 0;
+version_end:
+ return ret_val;
+}
+
+static void bt_fw_cb(const struct firmware *firmware, void *context)
+{
+ struct dev_data *dev_entry = context;
+
+ dev_entry->fw = firmware;
+ if (!firmware)
+ pr_err("In callback routine, firmware file not available\n");
+ complete(&dev_entry->firmware_loading_complete);
+}
+
+static int load_firmware(struct dev_data *dev_entry, uint8_t **buff)
+{
+#if LOAD_CONFIG
+ const struct firmware *fw;
+#endif
+ struct usb_device *udev;
+ struct patch_info *patch_entry;
+ char *fw_name;
+ int fw_len = 0, ret_val;
+
+ udev = dev_entry->udev;
+ init_completion(&dev_entry->firmware_loading_complete);
+ patch_entry = dev_entry->patch_entry;
+ fw_name = patch_entry->patch_name;
+ BT_DBG("Reading firmware file %s", fw_name);
+ ret_val = request_firmware_nowait(THIS_MODULE, 1, fw_name, &udev->dev,
+ GFP_KERNEL, dev_entry, bt_fw_cb);
+ if (ret_val < 0)
+ goto fw_fail;
+
+ wait_for_completion(&dev_entry->firmware_loading_complete);
+ if (!dev_entry->fw)
+ goto fw_fail;
+ *buff = kzalloc(dev_entry->fw->size, GFP_KERNEL);
+ if (NULL == *buff)
+ goto alloc_fail;
+ memcpy(*buff, dev_entry->fw->data, dev_entry->fw->size);
+ fw_len = dev_entry->fw->size;
+
+#if LOAD_CONFIG
+ release_firmware(dev_entry->fw);
+ fw_name = patch_entry->config_name;
+ ret_val = request_firmware(&fw, fw_name, &udev->dev);
+ if (ret_val < 0) {
+ fw_len = 0;
+ kfree(*buff);
+ *buff = NULL;
+ goto fw_fail;
+ }
+
+ *buff = krealloc(*buff, fw_len + fw->size, GFP_KERNEL);
+ if (NULL == *buff) {
+ fw_len = 0;
+ release_firmware(fw);
+ goto fw_fail;
+ }
+ memcpy(*buff + fw_len, fw->data, fw->size);
+ fw_len += fw->size;
+#endif
+
+alloc_fail:
+ release_firmware(dev_entry->fw);
+fw_fail:
+ return fw_len;
+}
+
+static int get_firmware(struct xchange_data *xdata)
+{
+ struct dev_data *dev_entry;
+ struct patch_info *patch_entry;
+
+ dev_entry = xdata->dev_entry;
+ patch_entry = dev_entry->patch_entry;
+ if (patch_entry->fw_len > 0) {
+ xdata->fw_data = kzalloc(patch_entry->fw_len, GFP_KERNEL);
+ if (NULL == xdata->fw_data)
+ return -ENOMEM;
+ memcpy(xdata->fw_data, patch_entry->fw_cache,
+ patch_entry->fw_len);
+ xdata->fw_len = patch_entry->fw_len;
+ } else {
+ xdata->fw_len = load_firmware(dev_entry, &xdata->fw_data);
+ if (xdata->fw_len <= 0)
+ return -1;
+ }
+
+ return 0;
+}
+
+static int download_patch(struct usb_interface *intf)
+{
+ struct dev_data *dev_entry;
+ uint8_t *fw_buf;
+ int ret_val;
+
+ BT_DBG("download_patch start");
+ dev_entry = dev_data_find(intf);
+ if (NULL == dev_entry) {
+ ret_val = -1;
+ BT_DBG("NULL == dev_entry");
+ goto patch_end;
+ }
+
+ init_xdata(&dev_entry->xdata, dev_entry);
+ ret_val = check_fw_version(&dev_entry->xdata);
+ if (ret_val != 0)
+ goto patch_end;
+
+ ret_val = get_firmware(&dev_entry->xdata);
+ if (ret_val < 0) {
+ BT_DBG("get_firmware failed!");
+ goto patch_end;
+ }
+ fw_buf = dev_entry->xdata.fw_data;
+
+ ret_val = download_data(&dev_entry->xdata);
+ if (ret_val < 0) {
+ BT_DBG("download_data failed!");
+ goto patch_fail;
+ }
+
+ ret_val = check_fw_version(&dev_entry->xdata);
+ if (ret_val <= 0) {
+ ret_val = -1;
+ goto patch_fail;
+ }
+
+ ret_val = 0;
+patch_fail:
+ kfree(fw_buf);
+patch_end:
+ BT_DBG("Rtk patch end %d", ret_val);
+ return ret_val;
+}
+
+static int btusb_open(struct hci_dev *hdev)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ int err;
+
+ BT_DBG("%s", hdev->name);
+
+ err = usb_autopm_get_interface(data->intf);
+ if (err < 0)
+ return err;
+
+ data->intf->needs_remote_wakeup = 1;
+ BT_DBG("%s start pm_usage_cnt(0x%x)", __func__,
+ atomic_read(&(data->intf->pm_usage_cnt)));
+
+ /*******************************/
+ if (0 == atomic_read(&hdev->promisc)) {
+ BT_DBG("btusb_open hdev->promisc == 0");
+ err = -1;
+ }
+ err = download_patch(data->intf);
+ if (err < 0)
+ goto failed;
+ /*******************************/
+
+ if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
+ goto done;
+
+ if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
+ goto done;
+
+ err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
+ if (err < 0)
+ goto failed;
+
+ err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
+ if (err < 0) {
+ mdelay(URB_CANCELING_DELAY_MS); /* Added by Realtek */
+ usb_kill_anchored_urbs(&data->intr_anchor);
+ goto failed;
+ }
+
+ set_bit(BTUSB_BULK_RUNNING, &data->flags);
+ btusb_submit_bulk_urb(hdev, GFP_KERNEL);
+
+done:
+ usb_autopm_put_interface(data->intf);
+ BT_DBG("%s end pm_usage_cnt(0x%x)", __func__,
+ atomic_read(&(data->intf->pm_usage_cnt)));
+
+ return 0;
+
+failed:
+ clear_bit(BTUSB_INTR_RUNNING, &data->flags);
+ clear_bit(HCI_RUNNING, &hdev->flags);
+ usb_autopm_put_interface(data->intf);
+ BT_DBG("%s failed pm_usage_cnt(0x%x)", __func__,
+ atomic_read(&(data->intf->pm_usage_cnt)));
+ return err;
+}
+
+static int btusb_close(struct hci_dev *hdev)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ int i, err;
+
+ if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
+ return 0;
+
+ BT_DBG("btusb_close");
+ /*******************************/
+ for (i = 0; i < NUM_REASSEMBLY; i++) {
+ if (hdev->reassembly[i]) {
+ kfree_skb(hdev->reassembly[i]);
+ hdev->reassembly[i] = NULL;
+ BT_DBG("%s free ressembly i =%d", __func__, i);
+ }
+ }
+ /*******************************/
+ cancel_work_sync(&data->work);
+ cancel_work_sync(&data->waker);
+
+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+ clear_bit(BTUSB_BULK_RUNNING, &data->flags);
+ clear_bit(BTUSB_INTR_RUNNING, &data->flags);
+
+ btusb_stop_traffic(data);
+ err = usb_autopm_get_interface(data->intf);
+ if (err < 0)
+ goto failed;
+
+ data->intf->needs_remote_wakeup = 0;
+ usb_autopm_put_interface(data->intf);
+
+failed:
+ mdelay(URB_CANCELING_DELAY_MS); /* Added by Realtek */
+ usb_scuttle_anchored_urbs(&data->deferred);
+ return 0;
+}
+
+static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct usb_interface *intf = data->isoc;
+ struct usb_endpoint_descriptor *ep_desc;
+ int i, err;
+
+ if (!data->isoc)
+ return -ENODEV;
+
+ err = usb_set_interface(data->udev, 1, altsetting);
+ if (err < 0) {
+ BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
+ return err;
+ }
+
+ data->isoc_altsetting = altsetting;
+
+ data->isoc_tx_ep = NULL;
+ data->isoc_rx_ep = NULL;
+
+ for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
+ ep_desc = &intf->cur_altsetting->endpoint[i].desc;
+
+ if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
+ data->isoc_tx_ep = ep_desc;
+ continue;
+ }
+
+ if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
+ data->isoc_rx_ep = ep_desc;
+ continue;
+ }
+ }
+
+ if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
+ BT_ERR("%s invalid SCO descriptors", hdev->name);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void btusb_work(struct work_struct *work)
+{
+ struct btusb_data *data = container_of(work, struct btusb_data, work);
+ struct hci_dev *hdev = data->hdev;
+ int err;
+
+ if (hdev->conn_hash.sco_num > 0) {
+ if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
+ err = usb_autopm_get_interface(data->isoc ? data->isoc :
+ data->intf);
+ if (err < 0) {
+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+ /* Delay added by Realtek */
+ mdelay(URB_CANCELING_DELAY_MS);
+ usb_kill_anchored_urbs(&data->isoc_anchor);
+ return;
+ }
+
+ set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
+ }
+ if (data->isoc_altsetting != 2) {
+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+ mdelay(URB_CANCELING_DELAY_MS); /* Added by Realtek */
+ usb_kill_anchored_urbs(&data->isoc_anchor);
+
+ if (__set_isoc_interface(hdev, 2) < 0)
+ return;
+ }
+
+ if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
+ if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+ else
+ btusb_submit_isoc_urb(hdev, GFP_KERNEL);
+ }
+ } else {
+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+ mdelay(URB_CANCELING_DELAY_MS); /* Added by Realtek */
+ usb_kill_anchored_urbs(&data->isoc_anchor);
+
+ __set_isoc_interface(hdev, 0);
+ if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
+ usb_autopm_put_interface(data->isoc ? data->isoc :
+ data->intf);
+ }
+}
+
+static struct patch_info *get_patch_entry(struct usb_device *udev)
+{
+ struct patch_info *patch_entry;
+ uint16_t pid;
+
+ patch_entry = patch_table;
+ pid = le16_to_cpu(udev->descriptor.idProduct);
+ while (pid != patch_entry->prod_id) {
+ if (0 == patch_entry->prod_id)
+ break;
+ patch_entry++;
+ }
+
+ return patch_entry;
+}
+
+static int rtkbt_pm_notify(struct notifier_block *notifier, ulong pm_event,
+ void *unused)
+{
+ struct dev_data *dev_entry;
+ struct patch_info *patch_entry;
+ struct usb_device *udev;
+
+ dev_entry = container_of(notifier, struct dev_data, pm_notifier);
+ patch_entry = dev_entry->patch_entry;
+ udev = dev_entry->udev;
+ BT_DBG("rtkbt_pm_notify pm_event =%ld", pm_event);
+ switch (pm_event) {
+ case PM_SUSPEND_PREPARE:
+ case PM_HIBERNATION_PREPARE:
+ patch_entry->fw_len = load_firmware(dev_entry,
+ &patch_entry->fw_cache);
+ if (patch_entry->fw_len <= 0) {
+ BT_DBG("rtkbt_pm_notify return NOTIFY_BAD");
+ return NOTIFY_BAD;
+ }
+
+ if (!device_may_wakeup(&udev->dev)) {
+ dev_entry->intf->needs_binding = 1;
+ BT_DBG("remote wakeup not support, set intf->needs_binding = 1");
+ }
+ break;
+ case PM_POST_SUSPEND:
+ case PM_POST_HIBERNATION:
+ case PM_POST_RESTORE:
+ if (patch_entry->fw_len > 0) {
+ kfree(patch_entry->fw_cache);
+ patch_entry->fw_cache = NULL;
+ patch_entry->fw_len = 0;
+ }
+#if BTUSB_RPM
+ usb_disable_autosuspend(udev);
+ usb_enable_autosuspend(udev);
+ pm_runtime_set_autosuspend_delay(&(udev->dev), 2000);
+#endif
+ break;
+
+ default:
+ break;
+ }
+
+ return NOTIFY_DONE;
+}
+
+static int patch_add(struct usb_interface *intf)
+{
+ struct dev_data *dev_entry;
+ struct usb_device *udev;
+
+ BT_DBG("patch_add");
+ dev_entry = dev_data_find(intf);
+ if (NULL != dev_entry)
+ return -1;
+
+ udev = interface_to_usbdev(intf);
+#if BTUSB_RPM
+ BT_DBG("auto suspend is enabled");
+ usb_enable_autosuspend(udev);
+ pm_runtime_set_autosuspend_delay(&(udev->dev), 2000);
+#endif
+
+ dev_entry = kzalloc(sizeof(struct dev_data), GFP_KERNEL);
+ dev_entry->intf = intf;
+ dev_entry->udev = udev;
+ dev_entry->pm_notifier.notifier_call = rtkbt_pm_notify;
+ dev_entry->patch_entry = get_patch_entry(udev);
+ list_add(&dev_entry->list_node, &dev_data_list);
+ register_pm_notifier(&dev_entry->pm_notifier);
+
+ return 0;
+}
+
+static int btusb_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_endpoint_descriptor *ep_desc;
+ struct btusb_data *data;
+ struct hci_dev *hdev;
+ int i, err, flag1, flag2;
+ struct usb_device *udev;
+ udev = interface_to_usbdev(intf);
+
+ BT_DBG("Realtek Bluetooth USB driver ver %s", VERSION);
+
+ /* interface numbers are hardcoded in the spec */
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
+ return -ENODEV;
+
+ /*******************************/
+ flag1 = device_can_wakeup(&udev->dev);
+ flag2 = device_may_wakeup(&udev->dev);
+ BT_DBG("btusb_probe 1 ========== can_wakeup =%x flag2 =%x",
+ flag1, flag2);
+ device_wakeup_disable(&udev->dev);
+ flag1 = device_can_wakeup(&udev->dev);
+ flag2 = device_may_wakeup(&udev->dev);
+ BT_DBG("wakeup_disable ========== can_wakeup =%x flag2 =%x",
+ flag1, flag2);
+ err = patch_add(intf);
+ if (err < 0)
+ return -1;
+ /*******************************/
+
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+
+ for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
+ ep_desc = &intf->cur_altsetting->endpoint[i].desc;
+
+ if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
+ data->intr_ep = ep_desc;
+ continue;
+ }
+
+ if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
+ data->bulk_tx_ep = ep_desc;
+ continue;
+ }
+
+ if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
+ data->bulk_rx_ep = ep_desc;
+ continue;
+ }
+ }
+
+ if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
+ kfree(data);
+ return -ENODEV;
+ }
+
+ data->cmdreq_type = USB_TYPE_CLASS;
+
+ data->udev = interface_to_usbdev(intf);
+ data->intf = intf;
+
+ spin_lock_init(&data->lock);
+
+ INIT_WORK(&data->work, btusb_work);
+ INIT_WORK(&data->waker, btusb_waker);
+ spin_lock_init(&data->txlock);
+
+ init_usb_anchor(&data->tx_anchor);
+ init_usb_anchor(&data->intr_anchor);
+ init_usb_anchor(&data->bulk_anchor);
+ init_usb_anchor(&data->isoc_anchor);
+ init_usb_anchor(&data->deferred);
+
+ hdev = hci_alloc_dev();
+ if (!hdev) {
+ kfree(data);
+ return -ENOMEM;
+ }
+
+ HDEV_BUS = HCI_USB;
+
+ data->hdev = hdev;
+
+ SET_HCIDEV_DEV(hdev, &intf->dev);
+
+ hdev->open = btusb_open;
+ hdev->close = btusb_close;
+ hdev->flush = btusb_flush;
+ hdev->send = btusb_send_frame;
+ hdev->notify = btusb_notify;
+
+
+ hci_set_drvdata(hdev, data);
+
+ /* Interface numbers are hardcoded in the specification */
+ data->isoc = usb_ifnum_to_if(data->udev, 1);
+
+ if (data->isoc) {
+ err = usb_driver_claim_interface(&btusb_driver,
+ data->isoc, data);
+ if (err < 0) {
+ hci_free_dev(hdev);
+ kfree(data);
+ return err;
+ }
+ }
+
+ err = hci_register_dev(hdev);
+ if (err < 0) {
+ hci_free_dev(hdev);
+ kfree(data);
+ return err;
+ }
+
+ usb_set_intfdata(intf, data);
+
+ return 0;
+}
+
+static void patch_remove(struct usb_interface *intf)
+{
+ struct dev_data *dev_entry;
+ struct usb_device *udev;
+
+ udev = interface_to_usbdev(intf);
+#if BTUSB_RPM
+ usb_disable_autosuspend(udev);
+#endif
+
+ dev_entry = dev_data_find(intf);
+ if (NULL == dev_entry)
+ return;
+
+ BT_DBG("patch_remove");
+ list_del(&dev_entry->list_node);
+ unregister_pm_notifier(&dev_entry->pm_notifier);
+ kfree(dev_entry);
+}
+
+static void btusb_disconnect(struct usb_interface *intf)
+{
+ struct btusb_data *data = usb_get_intfdata(intf);
+ struct hci_dev *hdev;
+ struct usb_device *udev;
+ udev = interface_to_usbdev(intf);
+
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
+ return;
+
+ if (!data)
+ return;
+
+ BT_DBG("btusb_disconnect");
+ /*******************************/
+ patch_remove(intf);
+ /*******************************/
+
+ hdev = data->hdev;
+
+ usb_set_intfdata(data->intf, NULL);
+
+ if (data->isoc)
+ usb_set_intfdata(data->isoc, NULL);
+
+ hci_unregister_dev(hdev);
+
+ if (intf == data->isoc)
+ usb_driver_release_interface(&btusb_driver, data->intf);
+ else if (data->isoc)
+ usb_driver_release_interface(&btusb_driver, data->isoc);
+
+ hci_free_dev(hdev);
+ kfree(data);
+}
+
+#ifdef CONFIG_PM
+static int set_btoff(struct usb_interface *intf)
+{
+ struct dev_data *dev_entry;
+ int ret_val;
+
+ BT_DBG("set_btoff");
+ dev_entry = dev_data_find(intf);
+ if (NULL == dev_entry)
+ return -1;
+
+ init_xdata(&dev_entry->xdata, dev_entry);
+ dev_entry->xdata.cmd_hdr->opcode = cpu_to_le16(BTOFF_OPCODE);
+ dev_entry->xdata.cmd_hdr->plen = 1;
+ dev_entry->xdata.pkt_len = CMD_HDR_LEN + 1;
+ dev_entry->xdata.send_pkt[CMD_HDR_LEN] = 1;
+
+ ret_val = send_hci_cmd(&dev_entry->xdata);
+ if (ret_val < 0)
+ return ret_val;
+
+ ret_val = rcv_hci_evt(&dev_entry->xdata);
+ if (ret_val < 0)
+ return ret_val;
+
+ BT_DBG("set_btoff done");
+ return 0;
+}
+
+static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct btusb_data *data = usb_get_intfdata(intf);
+
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
+ return 0;
+
+ /*******************************/
+ BT_DBG("btusb_suspend message.event = 0x%x, data->suspend_count =%d",
+ message.event, data->suspend_count);
+ if (!test_bit(HCI_RUNNING, &data->hdev->flags)) {
+ BT_DBG("btusb_suspend-----bt is off");
+ set_btoff(data->intf);
+ }
+ /*******************************/
+
+ if (data->suspend_count++)
+ return 0;
+
+ spin_lock_irq(&data->txlock);
+ if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
+ set_bit(BTUSB_SUSPENDING, &data->flags);
+ spin_unlock_irq(&data->txlock);
+ } else {
+ spin_unlock_irq(&data->txlock);
+ data->suspend_count--;
+ return -EBUSY;
+ }
+
+ cancel_work_sync(&data->work);
+
+ btusb_stop_traffic(data);
+ mdelay(URB_CANCELING_DELAY_MS); /* Added by Realtek */
+ usb_kill_anchored_urbs(&data->tx_anchor);
+
+ return 0;
+}
+
+static void play_deferred(struct btusb_data *data)
+{
+ struct urb *urb;
+ int err;
+
+ while ((urb = usb_get_from_anchor(&data->deferred))) {
+
+ /************************************/
+ usb_anchor_urb(urb, &data->tx_anchor);
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0) {
+ BT_ERR("play_deferred urb %p submission failed", urb);
+ kfree(urb->setup_packet);
+ usb_unanchor_urb(urb);
+ } else {
+ usb_mark_last_busy(data->udev);
+ }
+ usb_free_urb(urb);
+ /************************************/
+ data->tx_in_flight++;
+ }
+ mdelay(URB_CANCELING_DELAY_MS); /* Added by Realtek */
+ usb_scuttle_anchored_urbs(&data->deferred);
+}
+
+static int btusb_resume(struct usb_interface *intf)
+{
+ struct btusb_data *data = usb_get_intfdata(intf);
+ struct hci_dev *hdev = data->hdev;
+ int err = 0;
+
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
+ return 0;
+
+
+ /*******************************/
+ BT_DBG("btusb_resume data->suspend_count =%d", data->suspend_count);
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags)) {
+ BT_DBG("btusb_resume-----bt is off, download patch");
+ download_patch(intf);
+ } else {
+ BT_DBG("btusb_resume,----bt is on");
+ }
+ /*******************************/
+ if (--data->suspend_count)
+ return 0;
+
+ if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
+ err = btusb_submit_intr_urb(hdev, GFP_NOIO);
+ if (err < 0) {
+ clear_bit(BTUSB_INTR_RUNNING, &data->flags);
+ goto failed;
+ }
+ }
+
+ if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
+ err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
+ if (err < 0) {
+ clear_bit(BTUSB_BULK_RUNNING, &data->flags);
+ goto failed;
+ }
+
+ btusb_submit_bulk_urb(hdev, GFP_NOIO);
+ }
+
+ if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
+ if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+ else
+ btusb_submit_isoc_urb(hdev, GFP_NOIO);
+ }
+
+ spin_lock_irq(&data->txlock);
+ play_deferred(data);
+ clear_bit(BTUSB_SUSPENDING, &data->flags);
+ spin_unlock_irq(&data->txlock);
+ schedule_work(&data->work);
+
+ return 0;
+
+failed:
+ mdelay(URB_CANCELING_DELAY_MS); /* Added by Realtek */
+ usb_scuttle_anchored_urbs(&data->deferred);
+/* done: */
+ spin_lock_irq(&data->txlock);
+ clear_bit(BTUSB_SUSPENDING, &data->flags);
+ spin_unlock_irq(&data->txlock);
+
+ return err;
+}
+#endif
+
+static struct usb_driver btusb_driver = {
+ .name = "rtk_btusb",
+ .probe = btusb_probe,
+ .disconnect = btusb_disconnect,
+#ifdef CONFIG_PM
+ .suspend = btusb_suspend,
+ .resume = btusb_resume,
+#endif
+ .id_table = btusb_table,
+ .supports_autosuspend = 1,
+};
+
+
+module_usb_driver(btusb_driver);
+
+MODULE_AUTHOR("Edward Bian <edward_bian-kXabqFNEczNtrwSWzY7KCg@public.gmane.org>");
+MODULE_DESCRIPTION("Realtek Bluetooth USB driver ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE("rtl_bt/rtl8723a.bin");
diff --git a/drivers/bluetooth/rtk_btusb.h b/drivers/bluetooth/rtk_btusb.h
new file mode 100644
index 0000000..0c55dd6
--- /dev/null
+++ b/drivers/bluetooth/rtk_btusb.h
@@ -0,0 +1,102 @@
+/*
+ *
+ * Realtek Bluetooth USB driver
+ *
+ * Copyright (C) 2012-2013 Edward Bian <edward_bian-kXabqFNEczNtrwSWzY7KCg@public.gmane.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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
+ *
+ */
+
+#ifndef RTK_BTUSB_H
+#define RTK_BTUSB_H
+
+#define HDEV_BUS (hdev->bus)
+#define USB_RPM 1
+
+#define BTUSB_RPM 0 /*1 SS enable; 0 SS disable */
+#define LOAD_CONFIG 0
+#define URB_CANCELING_DELAY_MS 10 /* Added by Realtek */
+
+#define BTUSB_MAX_ISOC_FRAMES 10
+#define BTUSB_INTR_RUNNING 0
+#define BTUSB_BULK_RUNNING 1
+#define BTUSB_ISOC_RUNNING 2
+#define BTUSB_SUSPENDING 3
+#define BTUSB_DID_ISO_RESUME 4
+
+#define CMD_CMP_EVT 0x0e
+#define PKT_LEN 300
+#define MSG_TO 1000
+#define PATCH_SEG_MAX 252
+#define DATA_END 0x80
+#define DOWNLOAD_OPCODE 0xfc20
+#define BTOFF_OPCODE 0xfc28
+#define CMD_HDR_LEN sizeof(struct hci_command_hdr)
+#define EVT_HDR_LEN sizeof(struct hci_event_hdr)
+#define CMD_CMP_LEN sizeof(struct hci_ev_cmd_complete)
+
+enum rtk_endpoit {
+ CTRL_EP = 0,
+ INTR_EP = 1,
+ BULK_EP = 2,
+ ISOC_EP = 3
+};
+
+struct patch_info {
+ uint16_t prod_id;
+ uint16_t lmp_sub;
+ char *patch_name;
+ char *config_name;
+ uint8_t *fw_cache;
+ int fw_len;
+};
+
+struct xchange_data {
+ struct dev_data *dev_entry;
+ int pipe_in, pipe_out;
+ uint8_t send_pkt[PKT_LEN];
+ uint8_t rcv_pkt[PKT_LEN];
+ struct hci_command_hdr *cmd_hdr;
+ struct hci_event_hdr *evt_hdr;
+ struct hci_ev_cmd_complete *cmd_cmp;
+ uint8_t *req_para, *rsp_para;
+ uint8_t *fw_data;
+ int pkt_len, fw_len;
+};
+
+struct dev_data {
+ struct list_head list_node;
+ struct usb_interface *intf;
+ struct usb_device *udev;
+ struct notifier_block pm_notifier;
+ struct patch_info *patch_entry;
+ struct xchange_data xdata;
+ struct completion firmware_loading_complete;
+ const struct firmware *fw;
+};
+
+struct download_cp {
+ uint8_t index;
+ uint8_t data[PATCH_SEG_MAX];
+} __packed;
+
+struct download_rp {
+ uint8_t status;
+ uint8_t index;
+} __packed;
+
+#endif
--
1.8.1.4
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