/*
- em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB video capture devices
+ em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
+ video capture devices
Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
Markus Rechberger <mrechberger@gmail.com>
module_param(isoc_debug, int, 0644);
MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
-#define em28xx_isocdbg(fmt, arg...) do {\
- if (isoc_debug) \
+#define em28xx_isocdbg(fmt, arg...) \
+do {\
+ if (isoc_debug) { \
printk(KERN_INFO "%s %s :"fmt, \
- dev->name, __func__ , ##arg); } while (0)
+ dev->name, __func__ , ##arg); \
+ } \
+ } while (0)
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_PARM_DESC(radio_nr, "radio device numbers");
static unsigned int video_debug;
-module_param(video_debug,int,0644);
-MODULE_PARM_DESC(video_debug,"enable debug messages [video]");
+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;
.step = 0x1,
.default_value = 0x1f,
.flags = 0,
- },{
+ }, {
.id = V4L2_CID_AUDIO_MUTE,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Mute",
/*
* Controls the isoc copy of each urb packet
*/
-static inline int em28xx_isoc_copy(struct urb *urb)
+static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
{
struct em28xx_buffer *buf;
struct em28xx_dmaqueue *dma_q = urb->context;
- struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
unsigned char *outp = NULL;
int i, len = 0, rc = 1;
unsigned char *p;
return rc;
}
-/* ------------------------------------------------------------------
- URB control
- ------------------------------------------------------------------*/
-
-/*
- * IRQ callback, called by URB callback
- */
-static void em28xx_irq_callback(struct urb *urb)
-{
- struct em28xx_dmaqueue *dma_q = urb->context;
- struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
- int rc, i;
-
- /* Copy data from URB */
- spin_lock(&dev->slock);
- rc = em28xx_isoc_copy(urb);
- spin_unlock(&dev->slock);
-
- /* Reset urb buffers */
- for (i = 0; i < urb->number_of_packets; i++) {
- urb->iso_frame_desc[i].status = 0;
- urb->iso_frame_desc[i].actual_length = 0;
- }
- urb->status = 0;
-
- urb->status = usb_submit_urb(urb, GFP_ATOMIC);
- if (urb->status) {
- em28xx_err("urb resubmit failed (error=%i)\n",
- urb->status);
- }
-}
-
-/*
- * Stop and Deallocate URBs
- */
-static void em28xx_uninit_isoc(struct em28xx *dev)
-{
- struct urb *urb;
- int i;
-
- em28xx_isocdbg("em28xx: called em28xx_uninit_isoc\n");
-
- dev->isoc_ctl.nfields = -1;
- for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
- urb = dev->isoc_ctl.urb[i];
- if (urb) {
- usb_kill_urb(urb);
- usb_unlink_urb(urb);
- if (dev->isoc_ctl.transfer_buffer[i]) {
- usb_buffer_free(dev->udev,
- urb->transfer_buffer_length,
- dev->isoc_ctl.transfer_buffer[i],
- urb->transfer_dma);
- }
- usb_free_urb(urb);
- dev->isoc_ctl.urb[i] = NULL;
- }
- dev->isoc_ctl.transfer_buffer[i] = NULL;
- }
-
- kfree(dev->isoc_ctl.urb);
- kfree(dev->isoc_ctl.transfer_buffer);
- dev->isoc_ctl.urb = NULL;
- dev->isoc_ctl.transfer_buffer = NULL;
-
- dev->isoc_ctl.num_bufs = 0;
-
- em28xx_capture_start(dev, 0);
-}
-
-/*
- * Allocate URBs and start IRQ
- */
-static int em28xx_prepare_isoc(struct em28xx *dev, int max_packets,
- int num_bufs)
-{
- struct em28xx_dmaqueue *dma_q = &dev->vidq;
- int i;
- int sb_size, pipe;
- struct urb *urb;
- int j, k;
-
- em28xx_isocdbg("em28xx: called em28xx_prepare_isoc\n");
-
- /* De-allocates all pending stuff */
- em28xx_uninit_isoc(dev);
-
- dev->isoc_ctl.num_bufs = num_bufs;
-
- dev->isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
- if (!dev->isoc_ctl.urb) {
- em28xx_errdev("cannot alloc memory for usb buffers\n");
- return -ENOMEM;
- }
-
- dev->isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs,
- GFP_KERNEL);
- if (!dev->isoc_ctl.urb) {
- em28xx_errdev("cannot allocate memory for usbtransfer\n");
- kfree(dev->isoc_ctl.urb);
- return -ENOMEM;
- }
-
- dev->isoc_ctl.max_pkt_size = dev->max_pkt_size;
- dev->isoc_ctl.buf = NULL;
-
- sb_size = max_packets * dev->isoc_ctl.max_pkt_size;
-
- /* allocate urbs and transfer buffers */
- for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
- urb = usb_alloc_urb(max_packets, GFP_KERNEL);
- if (!urb) {
- em28xx_err("cannot alloc isoc_ctl.urb %i\n", i);
- em28xx_uninit_isoc(dev);
- return -ENOMEM;
- }
- dev->isoc_ctl.urb[i] = urb;
-
- dev->isoc_ctl.transfer_buffer[i] = usb_buffer_alloc(dev->udev,
- sb_size, GFP_KERNEL, &urb->transfer_dma);
- if (!dev->isoc_ctl.transfer_buffer[i]) {
- em28xx_err("unable to allocate %i bytes for transfer"
- " buffer %i%s\n",
- sb_size, i,
- in_interrupt()?" while in int":"");
- em28xx_uninit_isoc(dev);
- return -ENOMEM;
- }
- memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
-
- /* FIXME: this is a hack - should be
- 'desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK'
- should also be using 'desc.bInterval'
- */
- pipe = usb_rcvisocpipe(dev->udev, 0x82);
- usb_fill_int_urb(urb, dev->udev, pipe,
- dev->isoc_ctl.transfer_buffer[i], sb_size,
- em28xx_irq_callback, dma_q, 1);
-
- urb->number_of_packets = max_packets;
- urb->transfer_flags = URB_ISO_ASAP;
-
- k = 0;
- for (j = 0; j < max_packets; j++) {
- urb->iso_frame_desc[j].offset = k;
- urb->iso_frame_desc[j].length =
- dev->isoc_ctl.max_pkt_size;
- k += dev->isoc_ctl.max_pkt_size;
- }
- }
-
- return 0;
-}
-
-static int em28xx_start_thread(struct em28xx_dmaqueue *dma_q)
-{
- struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
- int i, rc = 0;
-
- em28xx_videodbg("Called em28xx_start_thread\n");
-
- init_waitqueue_head(&dma_q->wq);
-
- em28xx_capture_start(dev, 1);
-
- /* submit urbs and enables IRQ */
- for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
- rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
- if (rc) {
- em28xx_err("submit of urb %i failed (error=%i)\n", i,
- rc);
- em28xx_uninit_isoc(dev);
- return rc;
- }
- }
-
- if (rc < 0)
- return rc;
-
- return 0;
-}
-
/* ------------------------------------------------------------------
Videobuf operations
------------------------------------------------------------------*/
if (*count < EM28XX_MIN_BUF)
*count = EM28XX_MIN_BUF;
- dev->mode = EM28XX_ANALOG_MODE;
-
/* Ask tuner to go to analog mode */
- memset (&f, 0, sizeof(f));
+ memset(&f, 0, sizeof(f));
f.frequency = dev->ctl_freq;
em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f);
struct em28xx_fh *fh = vq->priv_data;
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
struct em28xx *dev = fh->dev;
- struct em28xx_dmaqueue *vidq = &dev->vidq;
int rc = 0, urb_init = 0;
/* FIXME: It assumes depth = 16 */
urb_init = 1;
if (urb_init) {
- rc = em28xx_prepare_isoc(dev, EM28XX_NUM_PACKETS,
- EM28XX_NUM_BUFS);
- if (rc < 0)
- goto fail;
-
- rc = em28xx_start_thread(vidq);
+ rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
+ EM28XX_NUM_BUFS, dev->max_pkt_size,
+ em28xx_isoc_copy);
if (rc < 0)
goto fail;
}
}
-static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
+static void buffer_release(struct videobuf_queue *vq,
+ struct videobuf_buffer *vb)
{
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
struct em28xx_fh *fh = vq->priv_data;
.buf_release = buffer_release,
};
-/********************* v4l2 interface ******************************************/
+/********************* v4l2 interface **************************************/
/*
* em28xx_config()
/* enable vbi capturing */
-/* em28xx_write_regs_req(dev,0x00,0x0e,"\xC0",1); audio register */
-/* em28xx_write_regs_req(dev,0x00,0x0f,"\x80",1); clk register */
- em28xx_write_regs_req(dev,0x00,0x11,"\x51",1);
+/* em28xx_write_regs_req(dev, 0x00, 0x0e, "\xC0", 1); audio register */
+/* em28xx_write_regs_req(dev, 0x00, 0x0f, "\x80", 1); clk register */
+ em28xx_write_regs_req(dev, 0x00, 0x11, "\x51", 1);
dev->mute = 1; /* maybe not the right place... */
dev->volume = 0x1f;
em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
if (dev->has_msp34xx) {
- if (dev->i2s_speed)
- em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ, &dev->i2s_speed);
+ if (dev->i2s_speed) {
+ em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ,
+ &dev->i2s_speed);
+ }
route.input = dev->ctl_ainput;
route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
/* Note: this is msp3400 specific */
- em28xx_i2c_call_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING, &route);
+ em28xx_i2c_call_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING,
+ &route);
}
em28xx_audio_analog_set(dev);
return rc;
}
-static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
+static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id * norm)
{
struct em28xx_fh *fh = priv;
struct em28xx *dev = fh->dev;
index = dev->ctl_ainput;
- if (index == 0) {
+ if (index == 0)
strcpy(a->name, "Television");
- } else {
+ else
strcpy(a->name, "Line In");
- }
+
a->capability = V4L2_AUDCAP_STEREO;
a->index = index;
static int em28xx_reg_len(int reg)
{
switch (reg) {
- case AC97LSB_REG:
- case HSCALELOW_REG:
- case VSCALELOW_REG:
+ case EM28XX_R40_AC97LSB:
+ case EM28XX_R30_HSCALELOW:
+ case EM28XX_R32_VSCALELOW:
return 2;
default:
return 1;
{
int minor = iminor(inode);
int errCode = 0, radio = 0;
- struct em28xx *h,*dev = NULL;
+ struct em28xx *h, *dev = NULL;
struct em28xx_fh *fh;
enum v4l2_buf_type fh_type = 0;
em28xx_videodbg("open minor=%d type=%s users=%d\n",
minor, v4l2_type_names[fh_type], dev->users);
- fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
+ fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
if (!fh) {
em28xx_errdev("em28xx-video.c: Out of memory?!\n");
return -ENOMEM;
dev->hscale = 0;
dev->vscale = 0;
+ em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
em28xx_set_alternate(dev);
em28xx_resolution_set(dev);
+ /* Needed, since GPIO might have disabled power of
+ some i2c device
+ */
+ em28xx_config_i2c(dev);
+
}
if (fh->radio) {
em28xx_videodbg("video_open: setting radio device\n");
sizeof(struct em28xx_buffer), fh);
mutex_unlock(&dev->lock);
+
return errCode;
}
usb_put_dev(dev->udev);
/* Mark device as unused */
- em28xx_devused&=~(1<<dev->devno);
+ em28xx_devused &= ~(1<<dev->devno);
}
/*
* em28xx_v4l2_close()
- * stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls
+ * stops streaming and deallocates all resources allocated by the v4l2
+ * calls and ioctls
*/
static int em28xx_v4l2_close(struct inode *inode, struct file *filp)
{
/* do this before setting alternate! */
em28xx_uninit_isoc(dev);
+ em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
/* set alternate 0 */
dev->alt = 0;
* will allocate buffers when called for the first time
*/
static ssize_t
-em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count,
+em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
loff_t *pos)
{
struct em28xx_fh *fh = filp->private_data;
#endif
};
-/******************************** usb interface *****************************************/
+/******************************** usb interface ******************************/
static LIST_HEAD(em28xx_extension_devlist);
dev->em28xx_read_reg_req = em28xx_read_reg_req;
dev->is_em2800 = em28xx_boards[dev->model].is_em2800;
- errCode = em28xx_read_reg(dev, CHIPID_REG);
- if (errCode >= 0)
- em28xx_info("em28xx chip ID = %d\n", errCode);
-
em28xx_pre_card_setup(dev);
errCode = em28xx_config(dev);
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;
+ 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",
- udev->descriptor.idVendor,udev->descriptor.idProduct,
+ udev->descriptor.idVendor,
+ udev->descriptor.idProduct,
ifnum,
interface->altsetting[0].desc.bInterfaceClass);
- em28xx_devused&=~(1<<nr);
+ em28xx_devused &= ~(1<<nr);
return -ENODEV;
}
em28xx_err(DRIVER_NAME " new video device (%04x:%04x): interface %i, class %i\n",
- udev->descriptor.idVendor,udev->descriptor.idProduct,
+ udev->descriptor.idVendor,
+ udev->descriptor.idProduct,
ifnum,
interface->altsetting[0].desc.bInterfaceClass);
if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
USB_ENDPOINT_XFER_ISOC) {
em28xx_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n");
- em28xx_devused&=~(1<<nr);
+ em28xx_devused &= ~(1<<nr);
return -ENODEV;
}
if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
em28xx_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n");
- em28xx_devused&=~(1<<nr);
+ em28xx_devused &= ~(1<<nr);
return -ENODEV;
}
if (nr >= EM28XX_MAXBOARDS) {
- printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS);
- em28xx_devused&=~(1<<nr);
+ printk(DRIVER_NAME ": Supports only %i em28xx boards.\n",
+ EM28XX_MAXBOARDS);
+ em28xx_devused &= ~(1<<nr);
return -ENOMEM;
}
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (dev == NULL) {
em28xx_err(DRIVER_NAME ": out of memory!\n");
- em28xx_devused&=~(1<<nr);
+ em28xx_devused &= ~(1<<nr);
return -ENOMEM;
}
/* compute alternate max packet sizes */
uif = udev->actconfig->interface[0];
- dev->num_alt=uif->num_altsetting;
- em28xx_info("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);
+ dev->num_alt = uif->num_altsetting;
+ em28xx_info("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);
+ em28xx_devused &= ~(1<<nr);
kfree(dev);
return -ENOMEM;
}
wMaxPacketSize);
dev->alt_max_pkt_size[i] =
(tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
- em28xx_info("Alternate setting %i, max size= %i\n",i,
- dev->alt_max_pkt_size[i]);
+ em28xx_info("Alternate setting %i, max size= %i\n", i,
+ dev->alt_max_pkt_size[i]);
}
- if ((card[nr]>=0)&&(card[nr]<em28xx_bcount))
+ if ((card[nr] >= 0) && (card[nr] < em28xx_bcount))
dev->model = card[nr];
/* allocate device struct */
/* save our data pointer in this interface device */
usb_set_intfdata(interface, dev);
-#if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE)
- dev->qops = kmalloc(sizeof(em28xx_video_qops), GFP_KERNEL);
- memcpy(dev->qops, &em28xx_video_qops, sizeof(em28xx_video_qops));
-#endif
-
request_modules(dev);
return 0;
em28xx_info("disconnecting %s\n", dev->vdev->name);
- /* wait until all current v4l2 io is finished then deallocate resources */
+ /* wait until all current v4l2 io is finished then deallocate
+ resources */
mutex_lock(&dev->lock);
wake_up_interruptible_all(&dev->open);
projects / karo-tx-linux.git / blobdiff