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Message-Id: <1264017679-19324-1-git-send-email-lrodriguez@atheros.com>
Date: Wed, 20 Jan 2010 15:01:19 -0500
From: "Luis R. Rodriguez" <lrodriguez@...eros.com>
To: torvalds@...ux-foundation.org, marcel@...tmann.org
Cc: linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
mcgrof@...il.com, Vikram Kandukuri <vkandukuri@...eros.com>,
Vikram Kandukuri <vikram.kandukuri@...eros.com>,
Alicke Xu <sxu@...eros.com>
Subject: [PATCH] Bluetooth: Add DFU driver for Atheros Bluetooth chipset AR3011
From: Vikram Kandukuri <vkandukuri@...eros.com>
Signed-off-by: Vikram Kandukuri <vikram.kandukuri@...eros.com>
Signed-off-by: Alicke Xu <sxu@...eros.com>
Reviewed-by: Luis R. Rodriguez <lrodriguez@...eros.com>
Signed-off-by: Marcel Holtmann <marcel@...tmann.org>
---
Linus, this was merged into linux-next already. The driver is small enough,
it just uploads firmware, I figured it would likely be welcomed into 2.6.33-rc5.
The patch is the same as it went into linux-next. The firmware is already
merged as part of the linux-firmware git tree.
Distributions who want ath3k as part of older kernels (distributions preparing
a release based on 2.6.32) can snatch the driver apart by using:
git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/ath3k.git
Luis
drivers/bluetooth/Kconfig | 13 +++-
drivers/bluetooth/Makefile | 1 +
drivers/bluetooth/ath3k.c | 187 ++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 200 insertions(+), 1 deletions(-)
create mode 100644 drivers/bluetooth/ath3k.c
diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
index 652367a..058fbcc 100644
--- a/drivers/bluetooth/Kconfig
+++ b/drivers/bluetooth/Kconfig
@@ -195,5 +195,16 @@ config BT_MRVL_SDIO
Say Y here to compile support for Marvell BT-over-SDIO driver
into the kernel or say M to compile it as module.
-endmenu
+config BT_ATH3K
+ tristate "Atheros firmware download driver"
+ depends on BT_HCIBTUSB
+ select FW_LOADER
+ help
+ Bluetooth firmware download driver.
+ This driver loads the firmware into the Atheros Bluetooth
+ chipset.
+ Say Y here to compile support for "Atheros firmware download driver"
+ into the kernel or say M to compile it as module (ath3k).
+
+endmenu
diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile
index b3f57d2..7e5aed5 100644
--- a/drivers/bluetooth/Makefile
+++ b/drivers/bluetooth/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_BT_HCIBTUART) += btuart_cs.o
obj-$(CONFIG_BT_HCIBTUSB) += btusb.o
obj-$(CONFIG_BT_HCIBTSDIO) += btsdio.o
+obj-$(CONFIG_BT_ATH3K) += ath3k.o
obj-$(CONFIG_BT_MRVL) += btmrvl.o
obj-$(CONFIG_BT_MRVL_SDIO) += btmrvl_sdio.o
diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
new file mode 100644
index 0000000..add9485
--- /dev/null
+++ b/drivers/bluetooth/ath3k.c
@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 2008-2009 Atheros Communications Inc.
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+#include <linux/firmware.h>
+#include <linux/usb.h>
+#include <net/bluetooth/bluetooth.h>
+
+#define VERSION "1.0"
+
+
+static struct usb_device_id ath3k_table[] = {
+ /* Atheros AR3011 */
+ { USB_DEVICE(0x0CF3, 0x3000) },
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, ath3k_table);
+
+#define USB_REQ_DFU_DNLOAD 1
+#define BULK_SIZE 4096
+
+struct ath3k_data {
+ struct usb_device *udev;
+ u8 *fw_data;
+ u32 fw_size;
+ u32 fw_sent;
+};
+
+static int ath3k_load_firmware(struct ath3k_data *data,
+ unsigned char *firmware,
+ int count)
+{
+ u8 *send_buf;
+ int err, pipe, len, size, sent = 0;
+
+ BT_DBG("ath3k %p udev %p", data, data->udev);
+
+ pipe = usb_sndctrlpipe(data->udev, 0);
+
+ if ((usb_control_msg(data->udev, pipe,
+ USB_REQ_DFU_DNLOAD,
+ USB_TYPE_VENDOR, 0, 0,
+ firmware, 20, USB_CTRL_SET_TIMEOUT)) < 0) {
+ BT_ERR("Can't change to loading configuration err");
+ return -EBUSY;
+ }
+ sent += 20;
+ count -= 20;
+
+ send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC);
+ if (!send_buf) {
+ BT_ERR("Can't allocate memory chunk for firmware");
+ return -ENOMEM;
+ }
+
+ while (count) {
+ size = min_t(uint, count, BULK_SIZE);
+ pipe = usb_sndbulkpipe(data->udev, 0x02);
+ memcpy(send_buf, firmware + sent, size);
+
+ err = usb_bulk_msg(data->udev, pipe, send_buf, size,
+ &len, 3000);
+
+ if (err || (len != size)) {
+ BT_ERR("Error in firmware loading err = %d,"
+ "len = %d, size = %d", err, len, size);
+ goto error;
+ }
+
+ sent += size;
+ count -= size;
+ }
+
+ kfree(send_buf);
+ return 0;
+
+error:
+ kfree(send_buf);
+ return err;
+}
+
+static int ath3k_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ const struct firmware *firmware;
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct ath3k_data *data;
+ int size;
+
+ BT_DBG("intf %p id %p", intf, id);
+
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
+ return -ENODEV;
+
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->udev = udev;
+
+ if (request_firmware(&firmware, "ath3k-1.fw", &udev->dev) < 0) {
+ kfree(data);
+ return -EIO;
+ }
+
+ size = max_t(uint, firmware->size, 4096);
+ data->fw_data = kmalloc(size, GFP_KERNEL);
+ if (!data->fw_data) {
+ release_firmware(firmware);
+ kfree(data);
+ return -ENOMEM;
+ }
+
+ memcpy(data->fw_data, firmware->data, firmware->size);
+ data->fw_size = firmware->size;
+ data->fw_sent = 0;
+ release_firmware(firmware);
+
+ usb_set_intfdata(intf, data);
+ if (ath3k_load_firmware(data, data->fw_data, data->fw_size)) {
+ usb_set_intfdata(intf, NULL);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static void ath3k_disconnect(struct usb_interface *intf)
+{
+ struct ath3k_data *data = usb_get_intfdata(intf);
+
+ BT_DBG("ath3k_disconnect intf %p", intf);
+
+ kfree(data->fw_data);
+ kfree(data);
+}
+
+static struct usb_driver ath3k_driver = {
+ .name = "ath3k",
+ .probe = ath3k_probe,
+ .disconnect = ath3k_disconnect,
+ .id_table = ath3k_table,
+};
+
+static int __init ath3k_init(void)
+{
+ BT_INFO("Atheros AR30xx firmware driver ver %s", VERSION);
+ return usb_register(&ath3k_driver);
+}
+
+static void __exit ath3k_exit(void)
+{
+ usb_deregister(&ath3k_driver);
+}
+
+module_init(ath3k_init);
+module_exit(ath3k_exit);
+
+MODULE_AUTHOR("Atheros Communications");
+MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE("ath3k-1.fw");
--
1.6.3.3
--
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