* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
-#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/timer.h>
#include <linux/workqueue.h>
#include <asm/atomic.h>
-#include <asm/semaphore.h>
#define APPLE_VENDOR_ID 0x05AC
.bInterfaceProtocol = 0x00
/* table of devices that work with this driver */
-static struct usb_device_id appledisplay_table [] = {
+static const struct usb_device_id appledisplay_table[] = {
{ APPLEDISPLAY_DEVICE(0x9218) },
{ APPLEDISPLAY_DEVICE(0x9219) },
+ { APPLEDISPLAY_DEVICE(0x921c) },
{ APPLEDISPLAY_DEVICE(0x921d) },
/* Terminating entry */
struct usb_device *udev; /* usb device */
struct urb *urb; /* usb request block */
struct backlight_device *bd; /* backlight device */
- char *urbdata; /* interrupt URB data buffer */
- char *msgdata; /* control message data buffer */
+ u8 *urbdata; /* interrupt URB data buffer */
+ u8 *msgdata; /* control message data buffer */
- struct work_struct work;
+ struct delayed_work work;
int button_pressed;
spinlock_t lock;
};
static atomic_t count_displays = ATOMIC_INIT(0);
static struct workqueue_struct *wq;
-static void appledisplay_complete(struct urb *urb, struct pt_regs *regs)
+static void appledisplay_complete(struct urb *urb)
{
struct appledisplay *pdata = urb->context;
unsigned long flags;
+ int status = urb->status;
int retval;
- switch (urb->status) {
+ switch (status) {
case 0:
/* success */
break;
case -ENOENT:
case -ESHUTDOWN:
/* This urb is terminated, clean up */
- dbg("%s - urb shutting down with status: %d",
- __FUNCTION__, urb->status);
+ dbg("%s - urb shuttingdown with status: %d",
+ __func__, status);
return;
default:
dbg("%s - nonzero urb status received: %d",
- __FUNCTION__, urb->status);
+ __func__, status);
goto exit;
}
case ACD_BTN_BRIGHT_UP:
case ACD_BTN_BRIGHT_DOWN:
pdata->button_pressed = 1;
- queue_work(wq, &pdata->work);
+ queue_delayed_work(wq, &pdata->work, 0);
break;
case ACD_BTN_NONE:
default:
exit:
retval = usb_submit_urb(pdata->urb, GFP_ATOMIC);
if (retval) {
- err("%s - usb_submit_urb failed with result %d",
- __FUNCTION__, retval);
+ dev_err(&pdata->udev->dev,
+ "%s - usb_submit_urb failed with result %d\n",
+ __func__, retval);
}
}
static int appledisplay_bl_update_status(struct backlight_device *bd)
{
- struct appledisplay *pdata = class_get_devdata(&bd->class_dev);
+ struct appledisplay *pdata = bl_get_data(bd);
int retval;
pdata->msgdata[0] = 0x10;
- pdata->msgdata[1] = bd->props->brightness;
+ pdata->msgdata[1] = bd->props.brightness;
retval = usb_control_msg(
pdata->udev,
static int appledisplay_bl_get_brightness(struct backlight_device *bd)
{
- struct appledisplay *pdata = class_get_devdata(&bd->class_dev);
+ struct appledisplay *pdata = bl_get_data(bd);
int retval;
retval = usb_control_msg(
return pdata->msgdata[1];
}
-static struct backlight_properties appledisplay_bl_data = {
- .owner = THIS_MODULE,
+static const struct backlight_ops appledisplay_bl_data = {
.get_brightness = appledisplay_bl_get_brightness,
.update_status = appledisplay_bl_update_status,
- .max_brightness = 0xFF
};
-static void appledisplay_work(void *private)
+static void appledisplay_work(struct work_struct *work)
{
- struct appledisplay *pdata = private;
+ struct appledisplay *pdata =
+ container_of(work, struct appledisplay, work.work);
int retval;
- up(&pdata->bd->sem);
retval = appledisplay_bl_get_brightness(pdata->bd);
if (retval >= 0)
- pdata->bd->props->brightness = retval;
- down(&pdata->bd->sem);
+ pdata->bd->props.brightness = retval;
/* Poll again in about 125ms if there's still a button pressed */
if (pdata->button_pressed)
static int appledisplay_probe(struct usb_interface *iface,
const struct usb_device_id *id)
{
+ struct backlight_properties props;
struct appledisplay *pdata;
struct usb_device *udev = interface_to_usbdev(iface);
struct usb_host_interface *iface_desc;
iface_desc = iface->cur_altsetting;
for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
endpoint = &iface_desc->endpoint[i].desc;
- if (!int_in_endpointAddr &&
- (endpoint->bEndpointAddress & USB_DIR_IN) &&
- ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
- USB_ENDPOINT_XFER_INT)) {
+ if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) {
/* we found an interrupt in endpoint */
int_in_endpointAddr = endpoint->bEndpointAddress;
break;
}
}
if (!int_in_endpointAddr) {
- err("Could not find int-in endpoint");
+ dev_err(&iface->dev, "Could not find int-in endpoint\n");
return -EIO;
}
pdata = kzalloc(sizeof(struct appledisplay), GFP_KERNEL);
if (!pdata) {
retval = -ENOMEM;
- err("Out of memory");
+ dev_err(&iface->dev, "Out of memory\n");
goto error;
}
pdata->udev = udev;
spin_lock_init(&pdata->lock);
- INIT_WORK(&pdata->work, appledisplay_work, pdata);
+ INIT_DELAYED_WORK(&pdata->work, appledisplay_work);
/* Allocate buffer for control messages */
pdata->msgdata = kmalloc(ACD_MSG_BUFFER_LEN, GFP_KERNEL);
if (!pdata->msgdata) {
retval = -ENOMEM;
- err("appledisplay: Allocating buffer for control messages "
- "failed");
+ dev_err(&iface->dev,
+ "Allocating buffer for control messages failed\n");
goto error;
}
pdata->urb = usb_alloc_urb(0, GFP_KERNEL);
if (!pdata->urb) {
retval = -ENOMEM;
- err("appledisplay: Allocating URB failed");
+ dev_err(&iface->dev, "Allocating URB failed\n");
goto error;
}
GFP_KERNEL, &pdata->urb->transfer_dma);
if (!pdata->urbdata) {
retval = -ENOMEM;
- err("appledisplay: Allocating URB buffer failed");
+ dev_err(&iface->dev, "Allocating URB buffer failed\n");
goto error;
}
pdata, 1);
if (usb_submit_urb(pdata->urb, GFP_KERNEL)) {
retval = -EIO;
- err("appledisplay: Submitting URB failed");
+ dev_err(&iface->dev, "Submitting URB failed\n");
goto error;
}
/* Register backlight device */
snprintf(bl_name, sizeof(bl_name), "appledisplay%d",
atomic_inc_return(&count_displays) - 1);
- pdata->bd = backlight_device_register(bl_name, pdata,
- &appledisplay_bl_data);
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.max_brightness = 0xff;
+ pdata->bd = backlight_device_register(bl_name, NULL, pdata,
+ &appledisplay_bl_data, &props);
if (IS_ERR(pdata->bd)) {
- err("appledisplay: Backlight registration failed");
+ dev_err(&iface->dev, "Backlight registration failed\n");
+ retval = PTR_ERR(pdata->bd);
goto error;
}
/* Try to get brightness */
- up(&pdata->bd->sem);
brightness = appledisplay_bl_get_brightness(pdata->bd);
- down(&pdata->bd->sem);
if (brightness < 0) {
retval = brightness;
- err("appledisplay: Error while getting initial brightness: %d", retval);
+ dev_err(&iface->dev,
+ "Error while getting initial brightness: %d\n", retval);
goto error;
}
/* Set brightness in backlight device */
- up(&pdata->bd->sem);
- pdata->bd->props->brightness = brightness;
- down(&pdata->bd->sem);
+ pdata->bd->props.brightness = brightness;
/* save our data pointer in the interface device */
usb_set_intfdata(iface, pdata);
pdata->urbdata, pdata->urb->transfer_dma);
usb_free_urb(pdata->urb);
}
- if (pdata->bd)
+ if (pdata->bd && !IS_ERR(pdata->bd))
backlight_device_unregister(pdata->bd);
kfree(pdata->msgdata);
}
{
wq = create_singlethread_workqueue("appledisplay");
if (!wq) {
- err("Could not create work queue\n");
+ printk(KERN_ERR "appledisplay: Could not create work queue\n");
return -ENOMEM;
}
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