#include "em28xx.h"
+#define DRIVER_NAME "em28xx"
+
static int tuner = -1;
module_param(tuner, int, 0444);
MODULE_PARM_DESC(tuner, "tuner type");
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;
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);
"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) \
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");
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[] = {
{
}
};
-static struct usb_driver em28xx_usb_driver;
-
/* ------------------------------------------------------------------
DMA and thread functions
------------------------------------------------------------------*/
/********************* 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;
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;
/* Needed, since GPIO might have disabled power of
some i2c device
*/
- em28xx_config_i2c(dev);
+ em28xx_wake_i2c(dev);
}
if (fh->radio) {
* 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);
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);
}
/*
/******************************** 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,
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;
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);
-
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff