V4L/DVB (9979): em28xx: move usb probe code to a proper place
authorMauro Carvalho Chehab <mchehab@redhat.com>
Mon, 29 Dec 2008 01:18:14 +0000 (22:18 -0300)
committerMauro Carvalho Chehab <mchehab@redhat.com>
Tue, 30 Dec 2008 11:39:37 +0000 (09:39 -0200)
em28xx-video were holding several code that are not specific to V4L2
interface.

This patch moves the core code for em28xx-core, and usb probing code
into em28xx-cards.

This opens the possibility of breaking em28xx into a core module and a
V4L2 module, loaded only on devices that have analog interfaces.

Some cleanup may be done at em28xx-cards to optimize the config code.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/video/em28xx/em28xx-cards.c
drivers/media/video/em28xx/em28xx-core.c
drivers/media/video/em28xx/em28xx-video.c
drivers/media/video/em28xx/em28xx.h

index e5d9424d03f9b1150fde4a11ea015c67b034fd4f..42978f9592b77ef57bc4ef053f0e65849ddc09f7 100644 (file)
@@ -37,6 +37,8 @@
 
 #include "em28xx.h"
 
+#define DRIVER_NAME         "em28xx"
+
 static int tuner = -1;
 module_param(tuner, int, 0444);
 MODULE_PARM_DESC(tuner, "tuner type");
@@ -45,6 +47,13 @@ static unsigned int disable_ir;
 module_param(disable_ir, int, 0444);
 MODULE_PARM_DESC(disable_ir, "disable infrared remote support");
 
+static unsigned int card[]     = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
+module_param_array(card,  int, NULL, 0444);
+MODULE_PARM_DESC(card,     "card type");
+
+/* Bitmask marking allocated devices from 0 to EM28XX_MAXBOARDS */
+static unsigned long em28xx_devused;
+
 struct em28xx_hash_table {
        unsigned long hash;
        unsigned int  model;
@@ -1801,3 +1810,424 @@ void em28xx_card_setup(struct em28xx *dev)
        em28xx_ir_init(dev);
 }
 
+
+#if defined(CONFIG_MODULES) && defined(MODULE)
+static void request_module_async(struct work_struct *work)
+{
+       struct em28xx *dev = container_of(work,
+                            struct em28xx, request_module_wk);
+
+       if (dev->has_audio_class)
+               request_module("snd-usb-audio");
+       else if (dev->has_alsa_audio)
+               request_module("em28xx-alsa");
+
+       if (dev->board.has_dvb)
+               request_module("em28xx-dvb");
+}
+
+static void request_modules(struct em28xx *dev)
+{
+       INIT_WORK(&dev->request_module_wk, request_module_async);
+       schedule_work(&dev->request_module_wk);
+}
+#else
+#define request_modules(dev)
+#endif /* CONFIG_MODULES */
+
+/*
+ * em28xx_realease_resources()
+ * unregisters the v4l2,i2c and usb devices
+ * called when the device gets disconected or at module unload
+*/
+void em28xx_release_resources(struct em28xx *dev)
+{
+       if (dev->sbutton_input_dev)
+               em28xx_deregister_snapshot_button(dev);
+
+       if (dev->ir)
+               em28xx_ir_fini(dev);
+
+       /*FIXME: I2C IR should be disconnected */
+
+       em28xx_release_analog_resources(dev);
+
+       em28xx_remove_from_devlist(dev);
+
+       em28xx_i2c_unregister(dev);
+       usb_put_dev(dev->udev);
+
+       /* Mark device as unused */
+       em28xx_devused &= ~(1 << dev->devno);
+};
+
+/*
+ * em28xx_init_dev()
+ * allocates and inits the device structs, registers i2c bus and v4l device
+ */
+int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
+                          int minor)
+{
+       struct em28xx *dev = *devhandle;
+       int retval = -ENOMEM;
+       int errCode;
+
+       dev->udev = udev;
+       mutex_init(&dev->ctrl_urb_lock);
+       spin_lock_init(&dev->slock);
+       init_waitqueue_head(&dev->open);
+       init_waitqueue_head(&dev->wait_frame);
+       init_waitqueue_head(&dev->wait_stream);
+
+       dev->em28xx_write_regs = em28xx_write_regs;
+       dev->em28xx_read_reg = em28xx_read_reg;
+       dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len;
+       dev->em28xx_write_regs_req = em28xx_write_regs_req;
+       dev->em28xx_read_reg_req = em28xx_read_reg_req;
+       dev->board.is_em2800 = em28xx_boards[dev->model].is_em2800;
+
+       em28xx_pre_card_setup(dev);
+
+       if (!dev->board.is_em2800) {
+               /* Sets I2C speed to 100 KHz */
+               retval = em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
+               if (retval < 0) {
+                       em28xx_errdev("%s: em28xx_write_regs_req failed!"
+                                     " retval [%d]\n",
+                                     __func__, retval);
+                       return retval;
+               }
+       }
+
+       /* register i2c bus */
+       errCode = em28xx_i2c_register(dev);
+       if (errCode < 0) {
+               em28xx_errdev("%s: em28xx_i2c_register - errCode [%d]!\n",
+                       __func__, errCode);
+               return errCode;
+       }
+
+       /* Do board specific init and eeprom reading */
+       em28xx_card_setup(dev);
+
+       /* Configure audio */
+       errCode = em28xx_audio_setup(dev);
+       if (errCode < 0) {
+               em28xx_errdev("%s: Error while setting audio - errCode [%d]!\n",
+                       __func__, errCode);
+       }
+
+       /* wake i2c devices */
+       em28xx_wake_i2c(dev);
+
+       /* init video dma queues */
+       INIT_LIST_HEAD(&dev->vidq.active);
+       INIT_LIST_HEAD(&dev->vidq.queued);
+
+
+       if (dev->board.has_msp34xx) {
+               /* Send a reset to other chips via gpio */
+               errCode = em28xx_write_reg(dev, EM28XX_R08_GPIO, 0xf7);
+               if (errCode < 0) {
+                       em28xx_errdev("%s: em28xx_write_regs_req - "
+                                     "msp34xx(1) failed! errCode [%d]\n",
+                                     __func__, errCode);
+                       return errCode;
+               }
+               msleep(3);
+
+               errCode = em28xx_write_reg(dev, EM28XX_R08_GPIO, 0xff);
+               if (errCode < 0) {
+                       em28xx_errdev("%s: em28xx_write_regs_req - "
+                                     "msp34xx(2) failed! errCode [%d]\n",
+                                     __func__, errCode);
+                       return errCode;
+               }
+               msleep(3);
+       }
+
+       em28xx_add_into_devlist(dev);
+
+       errCode = em28xx_analog_config(dev);
+       if (errCode) {
+               em28xx_errdev("error configuring device\n");
+               return -ENOMEM;
+       }
+
+       retval = em28xx_register_analog_devices(dev);
+       if (retval < 0) {
+               em28xx_release_resources(dev);
+               goto fail_reg_devices;
+       }
+
+       em28xx_init_extension(dev);
+
+       /* Save some power by putting tuner to sleep */
+       em28xx_i2c_call_clients(dev, TUNER_SET_STANDBY, NULL);
+
+       return 0;
+
+fail_reg_devices:
+       return retval;
+}
+
+/*
+ * em28xx_usb_probe()
+ * checks for supported devices
+ */
+static int em28xx_usb_probe(struct usb_interface *interface,
+                           const struct usb_device_id *id)
+{
+       const struct usb_endpoint_descriptor *endpoint;
+       struct usb_device *udev;
+       struct usb_interface *uif;
+       struct em28xx *dev = NULL;
+       int retval = -ENODEV;
+       int i, nr, ifnum, isoc_pipe;
+       char *speed;
+       char descr[255] = "";
+
+       udev = usb_get_dev(interface_to_usbdev(interface));
+       ifnum = interface->altsetting[0].desc.bInterfaceNumber;
+
+       /* Check to see next free device and mark as used */
+       nr = find_first_zero_bit(&em28xx_devused, EM28XX_MAXBOARDS);
+       em28xx_devused |= 1<<nr;
+
+       /* Don't register audio interfaces */
+       if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
+               em28xx_err(DRIVER_NAME " audio device (%04x:%04x): "
+                       "interface %i, class %i\n",
+                       le16_to_cpu(udev->descriptor.idVendor),
+                       le16_to_cpu(udev->descriptor.idProduct),
+                       ifnum,
+                       interface->altsetting[0].desc.bInterfaceClass);
+
+               em28xx_devused &= ~(1<<nr);
+               return -ENODEV;
+       }
+
+       endpoint = &interface->cur_altsetting->endpoint[0].desc;
+
+       /* check if the device has the iso in endpoint at the correct place */
+       if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
+           USB_ENDPOINT_XFER_ISOC &&
+           (interface->altsetting[1].endpoint[0].desc.wMaxPacketSize == 940)) {
+               /* It's a newer em2874/em2875 device */
+               isoc_pipe = 0;
+       } else {
+               int check_interface = 1;
+               isoc_pipe = 1;
+               endpoint = &interface->cur_altsetting->endpoint[1].desc;
+               if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
+                   USB_ENDPOINT_XFER_ISOC)
+                       check_interface = 0;
+
+               if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)
+                       check_interface = 0;
+
+               if (!check_interface) {
+                       em28xx_err(DRIVER_NAME " video device (%04x:%04x): "
+                               "interface %i, class %i found.\n",
+                               le16_to_cpu(udev->descriptor.idVendor),
+                               le16_to_cpu(udev->descriptor.idProduct),
+                               ifnum,
+                               interface->altsetting[0].desc.bInterfaceClass);
+
+                       em28xx_err(DRIVER_NAME " This is an anciliary "
+                               "interface not used by the driver\n");
+
+                       em28xx_devused &= ~(1<<nr);
+                       return -ENODEV;
+               }
+       }
+
+       switch (udev->speed) {
+       case USB_SPEED_LOW:
+               speed = "1.5";
+               break;
+       case USB_SPEED_UNKNOWN:
+       case USB_SPEED_FULL:
+               speed = "12";
+               break;
+       case USB_SPEED_HIGH:
+               speed = "480";
+               break;
+       default:
+               speed = "unknown";
+       }
+
+       if (udev->manufacturer)
+               strlcpy(descr, udev->manufacturer, sizeof(descr));
+
+       if (udev->product) {
+               if (*descr)
+                       strlcat(descr, " ", sizeof(descr));
+               strlcat(descr, udev->product, sizeof(descr));
+       }
+       if (*descr)
+               strlcat(descr, " ", sizeof(descr));
+
+       printk(DRIVER_NAME ": New device %s@ %s Mbps "
+               "(%04x:%04x, interface %d, class %d)\n",
+               descr,
+               speed,
+               le16_to_cpu(udev->descriptor.idVendor),
+               le16_to_cpu(udev->descriptor.idProduct),
+               ifnum,
+               interface->altsetting->desc.bInterfaceNumber);
+
+       if (nr >= EM28XX_MAXBOARDS) {
+               printk(DRIVER_NAME ": Supports only %i em28xx boards.\n",
+                               EM28XX_MAXBOARDS);
+               em28xx_devused &= ~(1<<nr);
+               return -ENOMEM;
+       }
+
+       /* allocate memory for our device state and initialize it */
+       dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+       if (dev == NULL) {
+               em28xx_err(DRIVER_NAME ": out of memory!\n");
+               em28xx_devused &= ~(1<<nr);
+               return -ENOMEM;
+       }
+
+       snprintf(dev->name, 29, "em28xx #%d", nr);
+       dev->devno = nr;
+       dev->model = id->driver_info;
+       dev->alt   = -1;
+
+       /* Checks if audio is provided by some interface */
+       for (i = 0; i < udev->config->desc.bNumInterfaces; i++) {
+               uif = udev->config->interface[i];
+               if (uif->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
+                       dev->has_audio_class = 1;
+                       break;
+               }
+       }
+
+       /* compute alternate max packet sizes */
+       uif = udev->actconfig->interface[0];
+
+       dev->num_alt = uif->num_altsetting;
+       dev->alt_max_pkt_size = kmalloc(32 * dev->num_alt, GFP_KERNEL);
+
+       if (dev->alt_max_pkt_size == NULL) {
+               em28xx_errdev("out of memory!\n");
+               em28xx_devused &= ~(1<<nr);
+               kfree(dev);
+               return -ENOMEM;
+       }
+
+       for (i = 0; i < dev->num_alt ; i++) {
+               u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].desc.wMaxPacketSize);
+               dev->alt_max_pkt_size[i] =
+                   (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
+       }
+
+       if ((card[nr] >= 0) && (card[nr] < em28xx_bcount))
+               dev->model = card[nr];
+
+       /* allocate device struct */
+       mutex_init(&dev->lock);
+       mutex_lock(&dev->lock);
+       retval = em28xx_init_dev(&dev, udev, nr);
+       if (retval) {
+               em28xx_devused &= ~(1<<dev->devno);
+               kfree(dev);
+
+               return retval;
+       }
+
+       /* save our data pointer in this interface device */
+       usb_set_intfdata(interface, dev);
+
+       request_modules(dev);
+
+       /* Should be the last thing to do, to avoid newer udev's to
+          open the device before fully initializing it
+        */
+       mutex_unlock(&dev->lock);
+
+       return 0;
+}
+
+/*
+ * em28xx_usb_disconnect()
+ * called when the device gets diconencted
+ * video device will be unregistered on v4l2_close in case it is still open
+ */
+static void em28xx_usb_disconnect(struct usb_interface *interface)
+{
+       struct em28xx *dev;
+
+       dev = usb_get_intfdata(interface);
+       usb_set_intfdata(interface, NULL);
+
+       if (!dev)
+               return;
+
+       em28xx_info("disconnecting %s\n", dev->vdev->name);
+
+       /* wait until all current v4l2 io is finished then deallocate
+          resources */
+       mutex_lock(&dev->lock);
+
+       wake_up_interruptible_all(&dev->open);
+
+       if (dev->users) {
+               em28xx_warn
+                   ("device /dev/video%d is open! Deregistration and memory "
+                    "deallocation are deferred on close.\n",
+                               dev->vdev->num);
+
+               dev->state |= DEV_MISCONFIGURED;
+               em28xx_uninit_isoc(dev);
+               dev->state |= DEV_DISCONNECTED;
+               wake_up_interruptible(&dev->wait_frame);
+               wake_up_interruptible(&dev->wait_stream);
+       } else {
+               dev->state |= DEV_DISCONNECTED;
+               em28xx_release_resources(dev);
+       }
+
+       em28xx_close_extension(dev);
+
+       mutex_unlock(&dev->lock);
+
+       if (!dev->users) {
+               kfree(dev->alt_max_pkt_size);
+               kfree(dev);
+       }
+}
+
+static struct usb_driver em28xx_usb_driver = {
+       .name = "em28xx",
+       .probe = em28xx_usb_probe,
+       .disconnect = em28xx_usb_disconnect,
+       .id_table = em28xx_id_table,
+};
+
+static int __init em28xx_module_init(void)
+{
+       int result;
+
+       /* register this driver with the USB subsystem */
+       result = usb_register(&em28xx_usb_driver);
+       if (result)
+               em28xx_err(DRIVER_NAME
+                          " usb_register failed. Error number %d.\n", result);
+
+       printk(KERN_INFO DRIVER_NAME " driver loaded\n");
+
+       return result;
+}
+
+static void __exit em28xx_module_exit(void)
+{
+       /* deregister this driver with the USB subsystem */
+       usb_deregister(&em28xx_usb_driver);
+}
+
+module_init(em28xx_module_init);
+module_exit(em28xx_module_exit);
index 5964998daf2e37a3b35fc074ac7dcc0b86fdf0ff..ac735f25283ce5a7053bf2ebda3f2649120a5340 100644 (file)
@@ -26,6 +26,7 @@
 #include <linux/module.h>
 #include <linux/usb.h>
 #include <linux/vmalloc.h>
+#include <media/v4l2-common.h>
 
 #include "em28xx.h"
 
@@ -974,3 +975,145 @@ int em28xx_init_isoc(struct em28xx *dev, int max_packets,
        return 0;
 }
 EXPORT_SYMBOL_GPL(em28xx_init_isoc);
+
+/*
+ * em28xx_wake_i2c()
+ * configure i2c attached devices
+ */
+void em28xx_wake_i2c(struct em28xx *dev)
+{
+       struct v4l2_routing route;
+       int zero = 0;
+
+       route.input = INPUT(dev->ctl_input)->vmux;
+       route.output = 0;
+       em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, &zero);
+       em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+       em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL);
+}
+
+/*
+ * Device control list
+ */
+
+static LIST_HEAD(em28xx_devlist);
+static DEFINE_MUTEX(em28xx_devlist_mutex);
+
+struct em28xx *em28xx_get_device(struct inode *inode,
+                                enum v4l2_buf_type *fh_type,
+                                int *has_radio)
+{
+       struct em28xx *h, *dev = NULL;
+       int minor = iminor(inode);
+
+       *fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+       *has_radio = 0;
+
+       mutex_lock(&em28xx_devlist_mutex);
+       list_for_each_entry(h, &em28xx_devlist, devlist) {
+               if (h->vdev->minor == minor)
+                       dev = h;
+               if (h->vbi_dev->minor == minor) {
+                       dev = h;
+                       *fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
+               }
+               if (h->radio_dev &&
+                   h->radio_dev->minor == minor) {
+                       dev = h;
+                       *has_radio = 1;
+               }
+       }
+       mutex_unlock(&em28xx_devlist_mutex);
+
+       return dev;
+}
+
+/*
+ * em28xx_realease_resources()
+ * unregisters the v4l2,i2c and usb devices
+ * called when the device gets disconected or at module unload
+*/
+void em28xx_remove_from_devlist(struct em28xx *dev)
+{
+       mutex_lock(&em28xx_devlist_mutex);
+       list_del(&dev->devlist);
+       mutex_unlock(&em28xx_devlist_mutex);
+};
+
+void em28xx_add_into_devlist(struct em28xx *dev)
+{
+       mutex_lock(&em28xx_devlist_mutex);
+       list_add_tail(&dev->devlist, &em28xx_devlist);
+       mutex_unlock(&em28xx_devlist_mutex);
+};
+
+/*
+ * Extension interface
+ */
+
+static LIST_HEAD(em28xx_extension_devlist);
+static DEFINE_MUTEX(em28xx_extension_devlist_lock);
+
+int em28xx_register_extension(struct em28xx_ops *ops)
+{
+       struct em28xx *dev = NULL;
+
+       mutex_lock(&em28xx_devlist_mutex);
+       mutex_lock(&em28xx_extension_devlist_lock);
+       list_add_tail(&ops->next, &em28xx_extension_devlist);
+       list_for_each_entry(dev, &em28xx_devlist, devlist) {
+               if (dev)
+                       ops->init(dev);
+       }
+       printk(KERN_INFO "Em28xx: Initialized (%s) extension\n", ops->name);
+       mutex_unlock(&em28xx_extension_devlist_lock);
+       mutex_unlock(&em28xx_devlist_mutex);
+       return 0;
+}
+EXPORT_SYMBOL(em28xx_register_extension);
+
+void em28xx_unregister_extension(struct em28xx_ops *ops)
+{
+       struct em28xx *dev = NULL;
+
+       mutex_lock(&em28xx_devlist_mutex);
+       list_for_each_entry(dev, &em28xx_devlist, devlist) {
+               if (dev)
+                       ops->fini(dev);
+       }
+
+       mutex_lock(&em28xx_extension_devlist_lock);
+       printk(KERN_INFO "Em28xx: Removed (%s) extension\n", ops->name);
+       list_del(&ops->next);
+       mutex_unlock(&em28xx_extension_devlist_lock);
+       mutex_unlock(&em28xx_devlist_mutex);
+}
+EXPORT_SYMBOL(em28xx_unregister_extension);
+
+void em28xx_init_extension(struct em28xx *dev)
+{
+       struct em28xx_ops *ops = NULL;
+
+       mutex_lock(&em28xx_extension_devlist_lock);
+       if (!list_empty(&em28xx_extension_devlist)) {
+               list_for_each_entry(ops, &em28xx_extension_devlist, next) {
+                       if (ops->init)
+                               ops->init(dev);
+               }
+       }
+       mutex_unlock(&em28xx_extension_devlist_lock);
+}
+
+void em28xx_close_extension(struct em28xx *dev)
+{
+       struct em28xx_ops *ops = NULL;
+
+       mutex_lock(&em28xx_extension_devlist_lock);
+       if (!list_empty(&em28xx_extension_devlist)) {
+               list_for_each_entry(ops, &em28xx_extension_devlist, next) {
+                       if (ops->fini)
+                               ops->fini(dev);
+               }
+       }
+       mutex_unlock(&em28xx_extension_devlist_lock);
+}
index b5ea18e1229007d46f730cdcf55758bed3696511..4c0986920970b05a49068cbf832f9f46e35407f9 100644 (file)
@@ -48,9 +48,8 @@
                      "Mauro Carvalho Chehab <mchehab@infradead.org>, " \
                      "Sascha Sommer <saschasommer@freenet.de>"
 
-#define DRIVER_NAME         "em28xx"
 #define DRIVER_DESC         "Empia em28xx based USB video device driver"
-#define EM28XX_VERSION_CODE  KERNEL_VERSION(0, 1, 0)
+#define EM28XX_VERSION_CODE  KERNEL_VERSION(0, 1, 1)
 
 #define em28xx_videodbg(fmt, arg...) do {\
        if (video_debug) \
@@ -73,19 +72,13 @@ MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL");
 
-static LIST_HEAD(em28xx_devlist);
-static DEFINE_MUTEX(em28xx_devlist_mutex);
-
-static unsigned int card[]     = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
 static unsigned int vbi_nr[]   = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
 static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
 
-module_param_array(card,  int, NULL, 0444);
 module_param_array(video_nr, int, NULL, 0444);
 module_param_array(vbi_nr, int, NULL, 0444);
 module_param_array(radio_nr, int, NULL, 0444);
-MODULE_PARM_DESC(card,     "card type");
 MODULE_PARM_DESC(video_nr, "video device numbers");
 MODULE_PARM_DESC(vbi_nr,   "vbi device numbers");
 MODULE_PARM_DESC(radio_nr, "radio device numbers");
@@ -94,9 +87,6 @@ static unsigned int video_debug;
 module_param(video_debug, int, 0644);
 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
 
-/* Bitmask marking allocated devices from 0 to EM28XX_MAXBOARDS */
-static unsigned long em28xx_devused;
-
 /* supported video standards */
 static struct em28xx_fmt format[] = {
        {
@@ -131,8 +121,6 @@ static struct v4l2_queryctrl em28xx_qctrl[] = {
        }
 };
 
-static struct usb_driver em28xx_usb_driver;
-
 /* ------------------------------------------------------------------
        DMA and thread functions
    ------------------------------------------------------------------*/
@@ -519,56 +507,6 @@ static struct videobuf_queue_ops em28xx_video_qops = {
 
 /*********************  v4l2 interface  **************************************/
 
-/*
- * em28xx_config()
- * inits registers with sane defaults
- */
-static int em28xx_config(struct em28xx *dev)
-{
-       int retval;
-
-       /* Sets I2C speed to 100 KHz */
-       if (!dev->board.is_em2800) {
-               retval = em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
-               if (retval < 0) {
-                       em28xx_errdev("%s: em28xx_write_regs_req failed! retval [%d]\n",
-                               __func__, retval);
-                       return retval;
-               }
-       }
-
-       /* enable vbi capturing */
-
-/*     em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
-/*     em28xx_write_reg(dev, EM28XX_R0F_XCLK, 0x80); clk register */
-       em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x51);
-
-       dev->mute = 1;          /* maybe not the right place... */
-       dev->volume = 0x1f;
-
-       em28xx_set_outfmt(dev);
-       em28xx_colorlevels_set_default(dev);
-       em28xx_compression_disable(dev);
-
-       return 0;
-}
-
-/*
- * em28xx_config_i2c()
- * configure i2c attached devices
- */
-static void em28xx_config_i2c(struct em28xx *dev)
-{
-       struct v4l2_routing route;
-       int zero = 0;
-
-       route.input = INPUT(dev->ctl_input)->vmux;
-       route.output = 0;
-       em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, &zero);
-       em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
-       em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL);
-}
-
 static void video_mux(struct em28xx *dev, int index)
 {
        struct v4l2_routing route;
@@ -1647,28 +1585,12 @@ static int radio_queryctrl(struct file *file, void *priv,
 static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
 {
        int minor = iminor(inode);
-       int errCode = 0, radio = 0;
-       struct em28xx *h, *dev = NULL;
+       int errCode = 0, radio;
+       struct em28xx *dev;
+       enum v4l2_buf_type fh_type;
        struct em28xx_fh *fh;
-       enum v4l2_buf_type fh_type = 0;
 
-       mutex_lock(&em28xx_devlist_mutex);
-       list_for_each_entry(h, &em28xx_devlist, devlist) {
-               if (h->vdev->minor == minor) {
-                       dev  = h;
-                       fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-               }
-               if (h->vbi_dev->minor == minor) {
-                       dev  = h;
-                       fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
-               }
-               if (h->radio_dev &&
-                   h->radio_dev->minor == minor) {
-                       radio = 1;
-                       dev   = h;
-               }
-       }
-       mutex_unlock(&em28xx_devlist_mutex);
+       dev = em28xx_get_device(inode, &fh_type, &radio);
 
        if (NULL == dev)
                return -ENODEV;
@@ -1703,7 +1625,7 @@ static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
                /* Needed, since GPIO might have disabled power of
                   some i2c device
                 */
-               em28xx_config_i2c(dev);
+               em28xx_wake_i2c(dev);
 
        }
        if (fh->radio) {
@@ -1727,18 +1649,11 @@ static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
  * unregisters the v4l2,i2c and usb devices
  * called when the device gets disconected or at module unload
 */
-static void em28xx_release_resources(struct em28xx *dev)
+void em28xx_release_analog_resources(struct em28xx *dev)
 {
 
        /*FIXME: I2C IR should be disconnected */
 
-       list_del(&dev->devlist);
-       if (dev->sbutton_input_dev)
-               em28xx_deregister_snapshot_button(dev);
-
-       if (dev->ir)
-               em28xx_ir_fini(dev);
-
        if (dev->radio_dev) {
                if (-1 != dev->radio_dev->minor)
                        video_unregister_device(dev->radio_dev);
@@ -1764,11 +1679,6 @@ static void em28xx_release_resources(struct em28xx *dev)
                        video_device_release(dev->vdev);
                dev->vdev = NULL;
        }
-       em28xx_i2c_unregister(dev);
-       usb_put_dev(dev->udev);
-
-       /* Mark device as unused */
-       em28xx_devused &= ~(1<<dev->devno);
 }
 
 /*
@@ -2018,44 +1928,6 @@ static struct video_device em28xx_radio_template = {
 /******************************** usb interface ******************************/
 
 
-static LIST_HEAD(em28xx_extension_devlist);
-static DEFINE_MUTEX(em28xx_extension_devlist_lock);
-
-int em28xx_register_extension(struct em28xx_ops *ops)
-{
-       struct em28xx *dev = NULL;
-
-       mutex_lock(&em28xx_devlist_mutex);
-       mutex_lock(&em28xx_extension_devlist_lock);
-       list_add_tail(&ops->next, &em28xx_extension_devlist);
-       list_for_each_entry(dev, &em28xx_devlist, devlist) {
-               if (dev)
-                       ops->init(dev);
-       }
-       printk(KERN_INFO "Em28xx: Initialized (%s) extension\n", ops->name);
-       mutex_unlock(&em28xx_extension_devlist_lock);
-       mutex_unlock(&em28xx_devlist_mutex);
-       return 0;
-}
-EXPORT_SYMBOL(em28xx_register_extension);
-
-void em28xx_unregister_extension(struct em28xx_ops *ops)
-{
-       struct em28xx *dev = NULL;
-
-       mutex_lock(&em28xx_devlist_mutex);
-       list_for_each_entry(dev, &em28xx_devlist, devlist) {
-               if (dev)
-                       ops->fini(dev);
-       }
-
-       mutex_lock(&em28xx_extension_devlist_lock);
-       printk(KERN_INFO "Em28xx: Removed (%s) extension\n", ops->name);
-       list_del(&ops->next);
-       mutex_unlock(&em28xx_extension_devlist_lock);
-       mutex_unlock(&em28xx_devlist_mutex);
-}
-EXPORT_SYMBOL(em28xx_unregister_extension);
 
 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
                                             const struct video_device *template,
@@ -2078,7 +1950,45 @@ static struct video_device *em28xx_vdev_init(struct em28xx *dev,
        return vfd;
 }
 
-static int register_analog_devices(struct em28xx *dev)
+int em28xx_analog_config(struct em28xx *dev)
+{
+       printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
+               dev->name,
+               (EM28XX_VERSION_CODE >> 16) & 0xff,
+               (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
+
+       /* Analog specific initialization */
+       dev->format = &format[0];
+       video_mux(dev, 0);
+
+       /* enable vbi capturing */
+
+/*     em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
+/*     em28xx_write_reg(dev, EM28XX_R0F_XCLK, 0x80); clk register */
+       em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x51);
+
+       dev->mute = 1;          /* maybe not the right place... */
+       dev->volume = 0x1f;
+
+       em28xx_set_outfmt(dev);
+       em28xx_colorlevels_set_default(dev);
+       em28xx_compression_disable(dev);
+
+       /* set default norm */
+       dev->norm = em28xx_video_template.current_norm;
+       dev->width = norm_maxw(dev);
+       dev->height = norm_maxh(dev);
+       dev->interlaced = EM28XX_INTERLACED_DEFAULT;
+       dev->hscale = 0;
+       dev->vscale = 0;
+
+       /* FIXME: This is a very bad hack! Not all devices have TV on input 2 */
+       dev->ctl_input = 2;
+
+       return 0;
+}
+
+int em28xx_register_analog_devices(struct em28xx *dev)
 {
        int ret;
 
@@ -2130,440 +2040,3 @@ static int register_analog_devices(struct em28xx *dev)
 
        return 0;
 }
-
-
-/*
- * em28xx_init_dev()
- * allocates and inits the device structs, registers i2c bus and v4l device
- */
-static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
-                          int minor)
-{
-       struct em28xx_ops *ops = NULL;
-       struct em28xx *dev = *devhandle;
-       int retval = -ENOMEM;
-       int errCode;
-       unsigned int maxh, maxw;
-
-       dev->udev = udev;
-       mutex_init(&dev->ctrl_urb_lock);
-       spin_lock_init(&dev->slock);
-       init_waitqueue_head(&dev->open);
-       init_waitqueue_head(&dev->wait_frame);
-       init_waitqueue_head(&dev->wait_stream);
-
-       dev->em28xx_write_regs = em28xx_write_regs;
-       dev->em28xx_read_reg = em28xx_read_reg;
-       dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len;
-       dev->em28xx_write_regs_req = em28xx_write_regs_req;
-       dev->em28xx_read_reg_req = em28xx_read_reg_req;
-       dev->board.is_em2800 = em28xx_boards[dev->model].is_em2800;
-       dev->format = &format[0];
-
-       em28xx_pre_card_setup(dev);
-
-       errCode = em28xx_config(dev);
-       if (errCode) {
-               em28xx_errdev("error configuring device\n");
-               return -ENOMEM;
-       }
-
-       /* register i2c bus */
-       errCode = em28xx_i2c_register(dev);
-       if (errCode < 0) {
-               em28xx_errdev("%s: em28xx_i2c_register - errCode [%d]!\n",
-                       __func__, errCode);
-               return errCode;
-       }
-
-       /* Do board specific init and eeprom reading */
-       em28xx_card_setup(dev);
-
-       /* Configure audio */
-       errCode = em28xx_audio_setup(dev);
-       if (errCode < 0) {
-               em28xx_errdev("%s: Error while setting audio - errCode [%d]!\n",
-                       __func__, errCode);
-       }
-
-       /* configure the device */
-       em28xx_config_i2c(dev);
-
-       /* set default norm */
-       dev->norm = em28xx_video_template.current_norm;
-
-       maxw = norm_maxw(dev);
-       maxh = norm_maxh(dev);
-
-       /* set default image size */
-       dev->width = maxw;
-       dev->height = maxh;
-       dev->interlaced = EM28XX_INTERLACED_DEFAULT;
-       dev->hscale = 0;
-       dev->vscale = 0;
-       dev->ctl_input = 2;
-
-       errCode = em28xx_config(dev);
-       if (errCode < 0) {
-               em28xx_errdev("%s: em28xx_config - errCode [%d]!\n",
-                       __func__, errCode);
-               return errCode;
-       }
-
-       /* init video dma queues */
-       INIT_LIST_HEAD(&dev->vidq.active);
-       INIT_LIST_HEAD(&dev->vidq.queued);
-
-
-       if (dev->board.has_msp34xx) {
-               /* Send a reset to other chips via gpio */
-               errCode = em28xx_write_reg(dev, EM28XX_R08_GPIO, 0xf7);
-               if (errCode < 0) {
-                       em28xx_errdev("%s: em28xx_write_regs_req - msp34xx(1) failed! errCode [%d]\n",
-                               __func__, errCode);
-                       return errCode;
-               }
-               msleep(3);
-
-               errCode = em28xx_write_reg(dev, EM28XX_R08_GPIO, 0xff);
-               if (errCode < 0) {
-                       em28xx_errdev("%s: em28xx_write_regs_req - msp34xx(2) failed! errCode [%d]\n",
-                               __func__, errCode);
-                       return errCode;
-               }
-               msleep(3);
-       }
-
-       video_mux(dev, 0);
-
-       mutex_lock(&em28xx_devlist_mutex);
-       list_add_tail(&dev->devlist, &em28xx_devlist);
-       retval = register_analog_devices(dev);
-       if (retval < 0) {
-               em28xx_release_resources(dev);
-               mutex_unlock(&em28xx_devlist_mutex);
-               goto fail_reg_devices;
-       }
-
-       mutex_lock(&em28xx_extension_devlist_lock);
-       if (!list_empty(&em28xx_extension_devlist)) {
-               list_for_each_entry(ops, &em28xx_extension_devlist, next) {
-                       if (ops->id)
-                               ops->init(dev);
-               }
-       }
-       mutex_unlock(&em28xx_extension_devlist_lock);
-       mutex_unlock(&em28xx_devlist_mutex);
-
-       /* Save some power by putting tuner to sleep */
-       em28xx_i2c_call_clients(dev, TUNER_SET_STANDBY, NULL);
-
-       return 0;
-
-fail_reg_devices:
-       return retval;
-}
-
-#if defined(CONFIG_MODULES) && defined(MODULE)
-static void request_module_async(struct work_struct *work)
-{
-       struct em28xx *dev = container_of(work,
-                            struct em28xx, request_module_wk);
-
-       if (dev->has_audio_class)
-               request_module("snd-usb-audio");
-       else if (dev->has_alsa_audio)
-               request_module("em28xx-alsa");
-
-       if (dev->board.has_dvb)
-               request_module("em28xx-dvb");
-}
-
-static void request_modules(struct em28xx *dev)
-{
-       INIT_WORK(&dev->request_module_wk, request_module_async);
-       schedule_work(&dev->request_module_wk);
-}
-#else
-#define request_modules(dev)
-#endif /* CONFIG_MODULES */
-
-/*
- * em28xx_usb_probe()
- * checks for supported devices
- */
-static int em28xx_usb_probe(struct usb_interface *interface,
-                           const struct usb_device_id *id)
-{
-       const struct usb_endpoint_descriptor *endpoint;
-       struct usb_device *udev;
-       struct usb_interface *uif;
-       struct em28xx *dev = NULL;
-       int retval = -ENODEV;
-       int i, nr, ifnum, isoc_pipe;
-       char *speed;
-       char descr[255] = "";
-
-       udev = usb_get_dev(interface_to_usbdev(interface));
-       ifnum = interface->altsetting[0].desc.bInterfaceNumber;
-
-       /* Check to see next free device and mark as used */
-       nr = find_first_zero_bit(&em28xx_devused, EM28XX_MAXBOARDS);
-       em28xx_devused |= 1<<nr;
-
-       /* Don't register audio interfaces */
-       if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
-               em28xx_err(DRIVER_NAME " audio device (%04x:%04x): "
-                       "interface %i, class %i\n",
-                       le16_to_cpu(udev->descriptor.idVendor),
-                       le16_to_cpu(udev->descriptor.idProduct),
-                       ifnum,
-                       interface->altsetting[0].desc.bInterfaceClass);
-
-               em28xx_devused &= ~(1<<nr);
-               return -ENODEV;
-       }
-
-       endpoint = &interface->cur_altsetting->endpoint[0].desc;
-
-       /* check if the device has the iso in endpoint at the correct place */
-       if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
-           USB_ENDPOINT_XFER_ISOC &&
-           (interface->altsetting[1].endpoint[0].desc.wMaxPacketSize == 940))
-       {
-               /* It's a newer em2874/em2875 device */
-               isoc_pipe = 0;
-       } else {
-               int check_interface = 1;
-               isoc_pipe = 1;
-               endpoint = &interface->cur_altsetting->endpoint[1].desc;
-               if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
-                   USB_ENDPOINT_XFER_ISOC)
-                       check_interface = 0;
-
-               if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)
-                       check_interface = 0;
-
-               if (!check_interface) {
-                       em28xx_err(DRIVER_NAME " video device (%04x:%04x): "
-                               "interface %i, class %i found.\n",
-                               le16_to_cpu(udev->descriptor.idVendor),
-                               le16_to_cpu(udev->descriptor.idProduct),
-                               ifnum,
-                               interface->altsetting[0].desc.bInterfaceClass);
-
-                       em28xx_err(DRIVER_NAME " This is an anciliary "
-                               "interface not used by the driver\n");
-
-                       em28xx_devused &= ~(1<<nr);
-                       return -ENODEV;
-               }
-       }
-
-       switch (udev->speed) {
-       case USB_SPEED_LOW:
-               speed = "1.5";
-               break;
-       case USB_SPEED_UNKNOWN:
-       case USB_SPEED_FULL:
-               speed = "12";
-               break;
-       case USB_SPEED_HIGH:
-               speed = "480";
-               break;
-       default:
-               speed = "unknown";
-       }
-
-       if (udev->manufacturer)
-               strlcpy(descr, udev->manufacturer, sizeof(descr));
-
-       if (udev->product) {
-               if (*descr)
-                       strlcat(descr, " ", sizeof(descr));
-               strlcat(descr, udev->product, sizeof(descr));
-       }
-       if (*descr)
-               strlcat(descr, " ", sizeof(descr));
-
-       printk(DRIVER_NAME ": New device %s@ %s Mbps "
-               "(%04x:%04x, interface %d, class %d)\n",
-               descr,
-               speed,
-               le16_to_cpu(udev->descriptor.idVendor),
-               le16_to_cpu(udev->descriptor.idProduct),
-               ifnum,
-               interface->altsetting->desc.bInterfaceNumber);
-
-       if (nr >= EM28XX_MAXBOARDS) {
-               printk(DRIVER_NAME ": Supports only %i em28xx boards.\n",
-                               EM28XX_MAXBOARDS);
-               em28xx_devused &= ~(1<<nr);
-               return -ENOMEM;
-       }
-
-       /* allocate memory for our device state and initialize it */
-       dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-       if (dev == NULL) {
-               em28xx_err(DRIVER_NAME ": out of memory!\n");
-               em28xx_devused &= ~(1<<nr);
-               return -ENOMEM;
-       }
-
-       snprintf(dev->name, 29, "em28xx #%d", nr);
-       dev->devno = nr;
-       dev->model = id->driver_info;
-       dev->alt   = -1;
-
-       /* Checks if audio is provided by some interface */
-       for (i = 0; i < udev->config->desc.bNumInterfaces; i++) {
-               uif = udev->config->interface[i];
-               if (uif->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
-                       dev->has_audio_class = 1;
-                       break;
-               }
-       }
-
-       /* compute alternate max packet sizes */
-       uif = udev->actconfig->interface[0];
-
-       dev->num_alt = uif->num_altsetting;
-       em28xx_videodbg("Alternate settings: %i\n", dev->num_alt);
-/*     dev->alt_max_pkt_size = kmalloc(sizeof(*dev->alt_max_pkt_size)* */
-       dev->alt_max_pkt_size = kmalloc(32 * dev->num_alt, GFP_KERNEL);
-
-       if (dev->alt_max_pkt_size == NULL) {
-               em28xx_errdev("out of memory!\n");
-               em28xx_devused &= ~(1<<nr);
-               kfree(dev);
-               return -ENOMEM;
-       }
-
-       for (i = 0; i < dev->num_alt ; i++) {
-               u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].desc.
-                                                       wMaxPacketSize);
-               dev->alt_max_pkt_size[i] =
-                   (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
-               em28xx_videodbg("Alternate setting %i, max size= %i\n", i,
-                                               dev->alt_max_pkt_size[i]);
-       }
-
-       if ((card[nr] >= 0) && (card[nr] < em28xx_bcount))
-               dev->model = card[nr];
-
-       /* allocate device struct */
-       mutex_init(&dev->lock);
-       mutex_lock(&dev->lock);
-       retval = em28xx_init_dev(&dev, udev, nr);
-       if (retval) {
-               em28xx_devused &= ~(1<<dev->devno);
-               kfree(dev);
-
-               return retval;
-       }
-
-       /* save our data pointer in this interface device */
-       usb_set_intfdata(interface, dev);
-
-       request_modules(dev);
-
-       /* Should be the last thing to do, to avoid newer udev's to
-          open the device before fully initializing it
-        */
-       mutex_unlock(&dev->lock);
-
-       return 0;
-}
-
-/*
- * em28xx_usb_disconnect()
- * called when the device gets diconencted
- * video device will be unregistered on v4l2_close in case it is still open
- */
-static void em28xx_usb_disconnect(struct usb_interface *interface)
-{
-       struct em28xx *dev;
-       struct em28xx_ops *ops = NULL;
-
-       dev = usb_get_intfdata(interface);
-       usb_set_intfdata(interface, NULL);
-
-       if (!dev)
-               return;
-
-       em28xx_info("disconnecting %s\n", dev->vdev->name);
-
-       /* wait until all current v4l2 io is finished then deallocate
-          resources */
-       mutex_lock(&dev->lock);
-
-       wake_up_interruptible_all(&dev->open);
-
-       if (dev->users) {
-               em28xx_warn
-                   ("device /dev/video%d is open! Deregistration and memory "
-                    "deallocation are deferred on close.\n",
-                               dev->vdev->num);
-
-               dev->state |= DEV_MISCONFIGURED;
-               em28xx_uninit_isoc(dev);
-               dev->state |= DEV_DISCONNECTED;
-               wake_up_interruptible(&dev->wait_frame);
-               wake_up_interruptible(&dev->wait_stream);
-       } else {
-               dev->state |= DEV_DISCONNECTED;
-               em28xx_release_resources(dev);
-       }
-       mutex_unlock(&dev->lock);
-
-       mutex_lock(&em28xx_extension_devlist_lock);
-       if (!list_empty(&em28xx_extension_devlist)) {
-               list_for_each_entry(ops, &em28xx_extension_devlist, next) {
-                       ops->fini(dev);
-               }
-       }
-       mutex_unlock(&em28xx_extension_devlist_lock);
-
-       if (!dev->users) {
-               kfree(dev->alt_max_pkt_size);
-               kfree(dev);
-       }
-}
-
-static struct usb_driver em28xx_usb_driver = {
-       .name = "em28xx",
-       .probe = em28xx_usb_probe,
-       .disconnect = em28xx_usb_disconnect,
-       .id_table = em28xx_id_table,
-};
-
-static int __init em28xx_module_init(void)
-{
-       int result;
-
-       printk(KERN_INFO DRIVER_NAME " v4l2 driver version %d.%d.%d loaded\n",
-              (EM28XX_VERSION_CODE >> 16) & 0xff,
-              (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
-#ifdef SNAPSHOT
-       printk(KERN_INFO DRIVER_NAME " snapshot date %04d-%02d-%02d\n",
-              SNAPSHOT / 10000, (SNAPSHOT / 100) % 100, SNAPSHOT % 100);
-#endif
-
-       /* register this driver with the USB subsystem */
-       result = usb_register(&em28xx_usb_driver);
-       if (result)
-               em28xx_err(DRIVER_NAME
-                          " usb_register failed. Error number %d.\n", result);
-
-       return result;
-}
-
-static void __exit em28xx_module_exit(void)
-{
-       /* deregister this driver with the USB subsystem */
-       usb_deregister(&em28xx_usb_driver);
-}
-
-module_init(em28xx_module_init);
-module_exit(em28xx_module_exit);
-
index 100f27819cdc28b61afd385ffbce8f8e8c7748f3..c8e71edbfea7bf9fdd34114e11ef7f894c55fb5f 100644 (file)
@@ -581,10 +581,21 @@ int em28xx_init_isoc(struct em28xx *dev, int max_packets,
 void em28xx_uninit_isoc(struct em28xx *dev);
 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
-
-/* Provided by em28xx-video.c */
+void em28xx_wake_i2c(struct em28xx *dev);
+void em28xx_remove_from_devlist(struct em28xx *dev);
+void em28xx_add_into_devlist(struct em28xx *dev);
+struct em28xx *em28xx_get_device(struct inode *inode,
+                                enum v4l2_buf_type *fh_type,
+                                int *has_radio);
 int em28xx_register_extension(struct em28xx_ops *dev);
 void em28xx_unregister_extension(struct em28xx_ops *dev);
+void em28xx_init_extension(struct em28xx *dev);
+void em28xx_close_extension(struct em28xx *dev);
+
+/* Provided by em28xx-video.c */
+int em28xx_analog_config(struct em28xx *dev);
+int em28xx_register_analog_devices(struct em28xx *dev);
+void em28xx_release_analog_resources(struct em28xx *dev);
 
 /* Provided by em28xx-cards.c */
 extern int em2800_variant_detect(struct usb_device *udev, int model);
@@ -595,6 +606,7 @@ extern struct usb_device_id em28xx_id_table[];
 extern const unsigned int em28xx_bcount;
 void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir);
 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
+void em28xx_release_resources(struct em28xx *dev);
 
 /* Provided by em28xx-input.c */
 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);