// SPDX-License-Identifier: GPL-2.0-only
/*
* Intel La Jolla Cove Adapter USB driver
*
* Copyright (c) 2023, Intel Corporation.
*/
#include <linux/acpi.h>
#include <linux/auxiliary_bus.h>
#include <linux/dev_printk.h>
#include <linux/kernel.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/usb.h>
#include <linux/usb/ljca.h>
#include <linux/unaligned.h>
/* command flags */
#define LJCA_ACK_FLAG BIT(0)
#define LJCA_RESP_FLAG BIT(1)
#define LJCA_CMPL_FLAG BIT(2)
#define LJCA_MAX_PACKET_SIZE 64u
#define LJCA_MAX_PAYLOAD_SIZE \
(LJCA_MAX_PACKET_SIZE - sizeof(struct ljca_msg))
#define LJCA_WRITE_TIMEOUT_MS 200
#define LJCA_WRITE_ACK_TIMEOUT_MS 500
#define LJCA_ENUM_CLIENT_TIMEOUT_MS 20
/* ljca client type */
enum ljca_client_type {
LJCA_CLIENT_MNG = 1,
LJCA_CLIENT_GPIO = 3,
LJCA_CLIENT_I2C = 4,
LJCA_CLIENT_SPI = 5,
};
/* MNG client commands */
enum ljca_mng_cmd {
LJCA_MNG_RESET = 2,
LJCA_MNG_ENUM_GPIO = 4,
LJCA_MNG_ENUM_I2C = 5,
LJCA_MNG_ENUM_SPI = 8,
};
/* ljca client acpi _ADR */
enum ljca_client_acpi_adr {
LJCA_GPIO_ACPI_ADR,
LJCA_I2C1_ACPI_ADR,
LJCA_I2C2_ACPI_ADR,
LJCA_SPI1_ACPI_ADR,
LJCA_SPI2_ACPI_ADR,
LJCA_CLIENT_ACPI_ADR_MAX,
};
/* ljca cmd message structure */
struct ljca_msg {
u8 type;
u8 cmd;
u8 flags;
u8 len;
u8 data[] __counted_by(len);
} __packed;
struct ljca_i2c_ctr_info {
u8 id;
u8 capacity;
u8 intr_pin;
} __packed;
struct ljca_i2c_descriptor {
u8 num;
struct ljca_i2c_ctr_info info[] __counted_by(num);
} __packed;
struct ljca_spi_ctr_info {
u8 id;
u8 capacity;
u8 intr_pin;
} __packed;
struct ljca_spi_descriptor {
u8 num;
struct ljca_spi_ctr_info info[] __counted_by(num);
} __packed;
struct ljca_bank_descriptor {
u8 bank_id;
u8 pin_num;
/* 1 bit for each gpio, 1 means valid */
__le32 valid_pins;
} __packed;
struct ljca_gpio_descriptor {
u8 pins_per_bank;
u8 bank_num;
struct ljca_bank_descriptor bank_desc[] __counted_by(bank_num);
} __packed;
/**
* struct ljca_adapter - represent a ljca adapter
*
* @intf: the usb interface for this ljca adapter
* @usb_dev: the usb device for this ljca adapter
* @dev: the specific device info of the usb interface
* @rx_pipe: bulk in pipe for receive data from firmware
* @tx_pipe: bulk out pipe for send data to firmware
* @rx_urb: urb used for the bulk in pipe
* @rx_buf: buffer used to receive command response and event
* @rx_len: length of rx buffer
* @ex_buf: external buffer to save command response
* @ex_buf_len: length of external buffer
* @actual_length: actual length of data copied to external buffer
* @tx_buf: buffer used to download command to firmware
* @tx_buf_len: length of tx buffer
* @lock: spinlock to protect tx_buf and ex_buf
* @cmd_completion: completion object as the command receives ack
* @mutex: mutex to avoid command download concurrently
* @client_list: client device list
* @disconnect: usb disconnect ongoing or not
* @reset_id: used to reset firmware
*/
struct ljca_adapter {
struct usb_interface *intf;
struct usb_device *usb_dev;
struct device *dev;
unsigned int rx_pipe;
unsigned int tx_pipe;
struct urb *rx_urb;
void *rx_buf;
unsigned int rx_len;
u8 *ex_buf;
u8 ex_buf_len;
u8 actual_length;
void *tx_buf;
u8 tx_buf_len;
spinlock_t lock;
struct completion cmd_completion;
struct mutex mutex;
struct list_head client_list;
bool disconnect;
u32 reset_id;
};
struct ljca_match_ids_walk_data {
const struct acpi_device_id *ids;
const char *uid;
struct acpi_device *adev;
};
static const struct acpi_device_id ljca_gpio_hids[] = {
{ "INTC1074" },
{ "INTC1096" },
{ "INTC100B" },
{ "INTC10D1" },
{ "INTC10B5" },
{},
};
static const struct acpi_device_id ljca_i2c_hids[] = {
{ "INTC1075" },
{ "INTC1097" },
{ "INTC100C" },
{ "INTC10D2" },
{},
};
static const struct acpi_device_id ljca_spi_hids[] = {
{ "INTC1091" },
{ "INTC1098" },
{ "INTC100D" },
{ "INTC10D3" },
{},
};
static void ljca_handle_event(struct ljca_adapter *adap,
struct ljca_msg *header)
{
struct ljca_client *client;
list_for_each_entry(client, &adap->client_list, link) {
/*
* Currently only GPIO register event callback, but
* firmware message structure should include id when
* multiple same type clients register event callback.
*/
if (client->type == header->type) {
unsigned long flags;
spin_lock_irqsave(&client->event_cb_lock, flags);
client->event_cb(client->context, header->cmd,
header->data, header->len);
spin_unlock_irqrestore(&client->event_cb_lock, flags);
break;
}
}
}
/* process command ack and received data if available */
static void ljca_handle_cmd_ack(struct ljca_adapter *adap, struct ljca_msg *header)
{
struct ljca_msg *tx_header = adap->tx_buf;
u8 ibuf_len, actual_len = 0;
unsigned long flags;
u8 *ibuf;
spin_lock_irqsave(&adap->lock, flags);
if (tx_header->type != header->type || tx_header->cmd != header->cmd) {
spin_unlock_irqrestore(&adap->lock, flags);
dev_err(adap->dev, "cmd ack mismatch error\n");
return;
}
ibuf_len = adap->ex_buf_len;
ibuf = adap->ex_buf;
if (ibuf && ibuf_len) {
actual_len = min(header->len, ibuf_len);
/* copy received data to external buffer */
memcpy(ibuf, header->data, actual_len);
}
/* update copied data length */
adap->actual_length = actual_len;
spin_unlock_irqrestore(&adap->lock, flags);
complete(&adap->cmd_completion);
}
static void ljca_recv(struct urb *urb)
{
struct ljca_msg *header = urb->transfer_buffer;
struct ljca_adapter *adap = urb->context;
int ret;
switch (urb->status) {
case 0:
/* success */
break;
case -ENOENT:
/*
* directly complete the possible ongoing transfer
* during disconnect
*/
if (adap->disconnect)
complete(&adap->cmd_completion);
return;
case -ECONNRESET:
case -ESHUTDOWN:
case -EPIPE:
/* rx urb is terminated */
dev_dbg(adap->dev, "rx urb terminated with status: %d\n",
urb->status);
return;
default:
dev_dbg(adap->dev, "rx urb error: %d\n", urb->status);
goto resubmit;
}
if (header->len + sizeof(*header) != urb->actual_length)
goto resubmit;
if (header->flags & LJCA_ACK_FLAG)
ljca_handle_cmd_ack(adap, header);
else
ljca_handle_event(adap, header);
resubmit:
ret = usb_submit_urb(urb, GFP_ATOMIC);
if (ret && ret != -EPERM)
dev_err(adap->dev, "resubmit rx urb error %d\n", ret);
}
static int ljca_send(struct ljca_adapter *adap, u8 type, u8 cmd,
const u8 *obuf, u8 obuf_len, u8 *ibuf, u8 ibuf_len,
bool ack, unsigned long timeout)
{
unsigned int msg_len = sizeof(struct ljca_msg) + obuf_len;
struct ljca_msg *header = adap->tx_buf;
unsigned int transferred;
unsigned long flags;
int ret;
if (adap->disconnect)
return -ENODEV;
if (msg_len > adap->tx_buf_len)
return -EINVAL;
mutex_lock(&adap->mutex);
spin_lock_irqsave(&adap->lock, flags);
header->type = type;
header->cmd = cmd;
header->len = obuf_len;
if (obuf)
memcpy(header->data, obuf, obuf_len);
header->flags = LJCA_CMPL_FLAG | (ack ? LJCA_ACK_FLAG : 0);
adap->ex_buf = ibuf;
adap->ex_buf_len = ibuf_len;
adap->actual_length = 0;
spin_unlock_irqrestore(&adap->lock, flags);
reinit_completion(&adap->cmd_completion);
ret = usb_autopm_get_interface(adap->intf);
if (ret < 0)
goto out;
ret = usb_bulk_msg(adap->usb_dev, adap->tx_pipe, header,
msg_len, &transferred, LJCA_WRITE_TIMEOUT_MS);
usb_autopm_put_interface(adap->intf);
if (ret < 0)
goto out;
if (transferred != msg_len) {
ret = -EIO;
goto out;
}
if (ack) {
ret = wait_for_completion_timeout(&adap->cmd_completion,
timeout);
if (!ret) {
ret = -ETIMEDOUT;
goto out;
}
}
ret = adap->actual_length;
out:
spin_lock_irqsave(&adap->lock, flags);
adap->ex_buf = NULL;
adap->ex_buf_len = 0;
memset(header, 0, sizeof(*header));
spin_unlock_irqrestore(&adap->lock, flags);
mutex_unlock(&adap->mutex);
return ret;
}
int ljca_transfer(struct ljca_client *client, u8 cmd, const u8 *obuf,
u8 obuf_len, u8 *ibuf, u8 ibuf_len)
{
return ljca_send(client->adapter, client->type, cmd,
obuf, obuf_len, ibuf, ibuf_len, true,
LJCA_WRITE_ACK_TIMEOUT_MS);
}
EXPORT_SYMBOL_NS_GPL(ljca_transfer, LJCA);
int ljca_transfer_noack(struct ljca_client *client, u8 cmd, const u8 *obuf,
u8 obuf_len)
{
return ljca_send(client->adapter, client->type, cmd, obuf,
obuf_len, NULL, 0, false, LJCA_WRITE_ACK_TIMEOUT_MS);
}
EXPORT_SYMBOL_NS_GPL(ljca_transfer_noack, LJCA);
int ljca_register_event_cb(struct ljca_client *client, ljca_event_cb_t event_cb,
void *context)
{
unsigned long flags;
if (!event_cb)
return -EINVAL;
spin_lock_irqsave(&client->event_cb_lock, flags);
if (client->event_cb) {
spin_unlock_irqrestore(&client->event_cb_lock, flags);
return -EALREADY;
}
client->event_cb = event_cb;
client->context = context;
spin_unlock_irqrestore(&client->event_cb_lock, flags);
return 0;
}
EXPORT_SYMBOL_NS_GPL(ljca_register_event_cb, LJCA);
void ljca_unregister_event_cb(struct ljca_client *client)
{
unsigned long flags;
spin_lock_irqsave(&client->event_cb_lock, flags);
client->event_cb = NULL;
client->context = NULL;
spin_unlock_irqrestore(&client->event_cb_lock, flags);
}
EXPORT_SYMBOL_NS_GPL(ljca_unregister_event_cb, LJCA);
static int ljca_match_device_ids(struct acpi_device *adev, void *data)
{
struct ljca_match_ids_walk_data *wd = data;
const char *uid = acpi_device_uid(adev);
if (acpi_match_device_ids(adev, wd->ids))
return 0;
if (!wd->uid)
goto match;
if (!uid)
/*
* Some DSDTs have only one ACPI companion for the two I2C
* controllers and they don't set a UID at all (e.g. Dell
* Latitude 9420). On these platforms only the first I2C
* controller is used, so if a HID match has no UID we use
* "0" as the UID and assign ACPI companion to the first
* I2C controller.
*/
uid = "0";
else
uid = strchr(uid, wd->uid[0]);
if (!uid || strcmp(uid, wd->uid))
return 0;
match:
wd->adev = adev;
return 1;
}
/* bind auxiliary device to acpi device */
static void ljca_auxdev_acpi_bind(struct ljca_adapter *adap,
struct auxiliary_device *auxdev,
u64 adr, u8 id)
{
struct ljca_match_ids_walk_data wd = { 0 };
struct device *dev = adap->dev;
struct acpi_device *parent;
char uid[4];
parent = ACPI_COMPANION(dev);
if (!parent)
return;
/*
* Currently LJCA hw doesn't use _ADR instead the shipped
* platforms use _HID to distinguish children devices.
*/
switch (adr) {
case LJCA_GPIO_ACPI_ADR:
wd.ids = ljca_gpio_hids;
break;
case LJCA_I2C1_ACPI_ADR:
case LJCA_I2C2_ACPI_ADR:
snprintf(uid, sizeof(uid), "%d", id);
wd.uid = uid;
wd.ids = ljca_i2c_hids;
break;
case LJCA_SPI1_ACPI_ADR:
case LJCA_SPI2_ACPI_ADR:
wd.ids = ljca_spi_hids;
break;
default:
dev_warn(dev, "unsupported _ADR\n");
return;
}
acpi_dev_for_each_child(parent, ljca_match_device_ids, &wd);
if (wd.adev) {
ACPI_COMPANION_SET(&auxdev->dev, wd.adev);
return;
}
parent = ACPI_COMPANION(dev->parent->parent);
if (!parent)
return;
acpi_dev_for_each_child(parent, ljca_match_device_ids, &wd);
if (wd.adev)
ACPI_COMPANION_SET(&auxdev->dev, wd.adev);
}
static void ljca_auxdev_release(struct device *dev)
{
struct auxiliary_device *auxdev = to_auxiliary_dev(dev);
kfree(auxdev->dev.platform_data);
}
static int ljca_new_client_device(struct ljca_adapter *adap, u8 type, u8 id,
char *name, void *data, u64 adr)
{
struct auxiliary_device *auxdev;
struct ljca_client *client;
int ret;
client = kzalloc(sizeof *client, GFP_KERNEL);
if (!client) {
kfree(data);
return -ENOMEM;
}
client->type = type;
client->id = id;
client->adapter = adap;
spin_lock_init(&client->event_cb_lock);
auxdev = &client->auxdev;
auxdev->name = name;
auxdev->id = id;
auxdev->dev.parent = adap->dev;
auxdev->dev.platform_data = data;
auxdev->dev.release = ljca_auxdev_release;
ret = auxiliary_device_init(auxdev);
if (ret) {
kfree(data);
goto err_free;
}
ljca_auxdev_acpi_bind(adap, auxdev, adr, id);
ret = auxiliary_device_add(auxdev);
if (ret)
goto err_uninit;
list_add_tail(&client->link, &adap->client_list);
return 0;
err_uninit:
auxiliary_device_uninit(auxdev);
err_free:
kfree(client);
return ret;
}
static int ljca_enumerate_gpio(struct ljca_adapter *adap)
{
u32 valid_pin[LJCA_MAX_GPIO_NUM / BITS_PER_TYPE(u32)];
struct ljca_gpio_descriptor *desc;
struct ljca_gpio_info *gpio_info;
u8 buf[LJCA_MAX_PAYLOAD_SIZE];
int ret, gpio_num;
unsigned int i;
ret = ljca_send(adap, LJCA_CLIENT_MNG, LJCA_MNG_ENUM_GPIO, NULL, 0, buf,
sizeof(buf), true, LJCA_ENUM_CLIENT_TIMEOUT_MS);
if (ret < 0)
return ret;
/* check firmware response */
desc = (struct ljca_gpio_descriptor *)buf;
if (ret != struct_size(desc, bank_desc, desc->bank_num))
return -EINVAL;
gpio_num = desc->pins_per_bank * desc->bank_num;
if (gpio_num > LJCA_MAX_GPIO_NUM)
return -EINVAL;
/* construct platform data */
gpio_info = kzalloc(sizeof *gpio_info, GFP_KERNEL);
if (!gpio_info)
return -ENOMEM;
gpio_info->num = gpio_num;
for (i = 0; i < desc->bank_num; i++)
valid_pin[i] = get_unaligned_le32(&desc->bank_desc[i].valid_pins);
bitmap_from_arr32(gpio_info->valid_pin_map, valid_pin, gpio_num);
return ljca_new_client_device(adap, LJCA_CLIENT_GPIO, 0, "ljca-gpio",
gpio_info, LJCA_GPIO_ACPI_ADR);
}
static int ljca_enumerate_i2c(struct ljca_adapter *adap)
{
struct ljca_i2c_descriptor *desc;
struct ljca_i2c_info *i2c_info;
u8 buf[LJCA_MAX_PAYLOAD_SIZE];
unsigned int i;
int ret;
ret = ljca_send(adap, LJCA_CLIENT_MNG, LJCA_MNG_ENUM_I2C, NULL, 0, buf,
sizeof(buf), true, LJCA_ENUM_CLIENT_TIMEOUT_MS);
if (ret < 0)
return ret;
/* check firmware response */
desc = (struct ljca_i2c_descriptor *)buf;
if (ret != struct_size(desc, info, desc->num))
return -EINVAL;
for (i = 0; i < desc->num; i++) {
/* construct platform data */
i2c_info = kzalloc(sizeof *i2c_info, GFP_KERNEL);
if (!i2c_info)
return -ENOMEM;
i2c_info->id = desc->info[i].id;
i2c_info->capacity = desc->info[i].capacity;
i2c_info->intr_pin = desc->info[i].intr_pin;
ret = ljca_new_client_device(adap, LJCA_CLIENT_I2C, i,
"ljca-i2c", i2c_info,
LJCA_I2C1_ACPI_ADR + i);
if (ret)
return ret;
}
return 0;
}
static int ljca_enumerate_spi(struct ljca_adapter *adap)
{
struct ljca_spi_descriptor *desc;
struct ljca_spi_info *spi_info;
u8 buf[LJCA_MAX_PAYLOAD_SIZE];
unsigned int i;
int ret;
/* Not all LJCA chips implement SPI, a timeout reading the descriptors is normal */
ret = ljca_send(adap, LJCA_CLIENT_MNG, LJCA_MNG_ENUM_SPI, NULL, 0, buf,
sizeof(buf), true, LJCA_ENUM_CLIENT_TIMEOUT_MS);
if (ret < 0)
return (ret == -ETIMEDOUT) ? 0 : ret;
/* check firmware response */
desc = (struct ljca_spi_descriptor *)buf;
if (ret != struct_size(desc, info, desc->num))
return -EINVAL;
for (i = 0; i < desc->num; i++) {
/* construct platform data */
spi_info = kzalloc(sizeof *spi_info, GFP_KERNEL);
if (!spi_info)
return -ENOMEM;
spi_info->id = desc->info[i].id;
spi_info->capacity = desc->info[i].capacity;
ret = ljca_new_client_device(adap, LJCA_CLIENT_SPI, i,
"ljca-spi", spi_info,
LJCA_SPI1_ACPI_ADR + i);
if (ret)
return ret;
}
return 0;
}
static int ljca_reset_handshake(struct ljca_adapter *adap)
{
__le32 reset_id = cpu_to_le32(adap->reset_id);
__le32 reset_id_ret = 0;
int ret;
adap->reset_id++;
ret = ljca_send(adap, LJCA_CLIENT_MNG, LJCA_MNG_RESET, (u8 *)&reset_id,
sizeof(__le32), (u8 *)&reset_id_ret, sizeof(__le32),
true, LJCA_WRITE_ACK_TIMEOUT_MS);
if (ret < 0)
return ret;
if (reset_id_ret != reset_id)
return -EINVAL;
return 0;
}
static int ljca_enumerate_clients(struct ljca_adapter *adap)
{
struct ljca_client *client, *next;
int ret;
ret = ljca_reset_handshake(adap);
if (ret)
goto err_kill;
ret = ljca_enumerate_gpio(adap);
if (ret) {
dev_err(adap->dev, "enumerate GPIO error\n");
goto err_kill;
}
ret = ljca_enumerate_i2c(adap);
if (ret) {
dev_err(adap->dev, "enumerate I2C error\n");
goto err_kill;
}
ret = ljca_enumerate_spi(adap);
if (ret) {
dev_err(adap->dev, "enumerate SPI error\n");
goto err_kill;
}
return 0;
err_kill:
adap->disconnect = true;
usb_kill_urb(adap->rx_urb);
list_for_each_entry_safe_reverse(client, next, &adap->client_list, link) {
auxiliary_device_delete(&client->auxdev);
auxiliary_device_uninit(&client->auxdev);
list_del_init(&client->link);
kfree(client);
}
return ret;
}
static int ljca_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
struct usb_device *usb_dev = interface_to_usbdev(interface);
struct usb_host_interface *alt = interface->cur_altsetting;
struct usb_endpoint_descriptor *ep_in, *ep_out;
struct device *dev = &interface->dev;
struct ljca_adapter *adap;
int ret;
adap = devm_kzalloc(dev, sizeof(*adap), GFP_KERNEL);
if (!adap)
return -ENOMEM;
/* separate tx buffer allocation for alignment */
adap->tx_buf = devm_kzalloc(dev, LJCA_MAX_PACKET_SIZE, GFP_KERNEL);
if (!adap->tx_buf)
return -ENOMEM;
adap->tx_buf_len = LJCA_MAX_PACKET_SIZE;
mutex_init(&adap->mutex);
spin_lock_init(&adap->lock);
init_completion(&adap->cmd_completion);
INIT_LIST_HEAD(&adap->client_list);
adap->intf = usb_get_intf(interface);
adap->usb_dev = usb_dev;
adap->dev = dev;
/*
* find the first bulk in and out endpoints.
* ignore any others.
*/
ret = usb_find_common_endpoints(alt, &ep_in, &ep_out, NULL, NULL);
if (ret) {
dev_err(dev, "bulk endpoints not found\n");
goto err_put;
}
adap->rx_pipe = usb_rcvbulkpipe(usb_dev, usb_endpoint_num(ep_in));
adap->tx_pipe = usb_sndbulkpipe(usb_dev, usb_endpoint_num(ep_out));
/* setup rx buffer */
adap->rx_len = usb_endpoint_maxp(ep_in);
adap->rx_buf = devm_kzalloc(dev, adap->rx_len, GFP_KERNEL);
if (!adap->rx_buf) {
ret = -ENOMEM;
goto err_put;
}
/* alloc rx urb */
adap->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!adap->rx_urb) {
ret = -ENOMEM;
goto err_put;
}
usb_fill_bulk_urb(adap->rx_urb, usb_dev, adap->rx_pipe,
adap->rx_buf, adap->rx_len, ljca_recv, adap);
usb_set_intfdata(interface, adap);
/* submit rx urb before enumerate clients */
ret = usb_submit_urb(adap->rx_urb, GFP_KERNEL);
if (ret) {
dev_err(dev, "submit rx urb failed: %d\n", ret);
goto err_free;
}
ret = ljca_enumerate_clients(adap);
if (ret)
goto err_free;
usb_enable_autosuspend(usb_dev);
return 0;
err_free:
usb_free_urb(adap->rx_urb);
err_put:
usb_put_intf(adap->intf);
mutex_destroy(&adap->mutex);
return ret;
}
static void ljca_disconnect(struct usb_interface *interface)
{
struct ljca_adapter *adap = usb_get_intfdata(interface);
struct ljca_client *client, *next;
adap->disconnect = true;
usb_kill_urb(adap->rx_urb);
list_for_each_entry_safe_reverse(client, next, &adap->client_list, link) {
auxiliary_device_delete(&client->auxdev);
auxiliary_device_uninit(&client->auxdev);
list_del_init(&client->link);
kfree(client);
}
usb_free_urb(adap->rx_urb);
usb_put_intf(adap->intf);
mutex_destroy(&adap->mutex);
}
static int ljca_suspend(struct usb_interface *interface, pm_message_t message)
{
struct ljca_adapter *adap = usb_get_intfdata(interface);
usb_kill_urb(adap->rx_urb);
return 0;
}
static int ljca_resume(struct usb_interface *interface)
{
struct ljca_adapter *adap = usb_get_intfdata(interface);
return usb_submit_urb(adap->rx_urb, GFP_KERNEL);
}
static const struct usb_device_id ljca_table[] = {
{ USB_DEVICE(0x8086, 0x0b63) },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(usb, ljca_table);
static struct usb_driver ljca_driver = {
.name = "ljca",
.id_table = ljca_table,
.probe = ljca_probe,
.disconnect = ljca_disconnect,
.suspend = ljca_suspend,
.resume = ljca_resume,
.supports_autosuspend = 1,
};
module_usb_driver(ljca_driver);
MODULE_AUTHOR("Wentong Wu <[email protected]>");
MODULE_AUTHOR("Zhifeng Wang <[email protected]>");
MODULE_AUTHOR("Lixu Zhang <[email protected]>");
MODULE_DESCRIPTION("Intel La Jolla Cove Adapter USB driver");
MODULE_LICENSE("GPL");
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