/*
- 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>
- Mauro Carvalho Chehab <mchehab@brturbo.com.br>
+ Mauro Carvalho Chehab <mchehab@infradead.org>
Sascha Sommer <saschasommer@freenet.de>
Some parts based on SN9C10x PC Camera Controllers GPL driver made
#include <linux/usb.h>
#include <linux/i2c.h>
#include <linux/version.h>
-#include <linux/video_decoder.h>
+#include <linux/mm.h>
#include <linux/mutex.h>
#include "em28xx.h"
-#include <media/tuner.h>
#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/msp3400.h>
+#include <media/tuner.h>
#define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
"Markus Rechberger <mrechberger@gmail.com>, " \
- "Mauro Carvalho Chehab <mchehab@brturbo.com.br>, " \
+ "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, 0, 1)
+#define EM28XX_VERSION_CODE KERNEL_VERSION(0, 1, 0)
#define em28xx_videodbg(fmt, arg...) do {\
if (video_debug) \
printk(KERN_INFO "%s %s :"fmt, \
- dev->name, __FUNCTION__ , ##arg); } while (0)
+ dev->name, __func__ , ##arg); } while (0)
+
+static unsigned int isoc_debug;
+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) { \
+ printk(KERN_INFO "%s %s :"fmt, \
+ dev->name, __func__ , ##arg); \
+ } \
+ } while (0)
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
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 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_PARM_DESC(card,"card type");
-MODULE_PARM_DESC(video_nr,"video device numbers");
-MODULE_PARM_DESC(vbi_nr,"vbi device numbers");
+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");
-static int tuner = -1;
-module_param(tuner, int, 0444);
-MODULE_PARM_DESC(tuner, "tuner type");
-
-static unsigned int video_debug = 0;
-module_param(video_debug,int,0644);
-MODULE_PARM_DESC(video_debug,"enable debug messages [video]");
+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 tv norms */
-static struct em28xx_tvnorm tvnorms[] = {
- {
- .name = "PAL",
- .id = V4L2_STD_PAL,
- .mode = VIDEO_MODE_PAL,
- }, {
- .name = "NTSC",
- .id = V4L2_STD_NTSC,
- .mode = VIDEO_MODE_NTSC,
- }, {
- .name = "SECAM",
- .id = V4L2_STD_SECAM,
- .mode = VIDEO_MODE_SECAM,
- }, {
- .name = "PAL-M",
- .id = V4L2_STD_PAL_M,
- .mode = VIDEO_MODE_PAL,
- }
-};
-
-static const unsigned char saa7114_i2c_init[] = {
- 0x00,0x00,0x01,0x08,0x02,0xc4,0x03,0x30,0x04,0x90,0x05,0x90,0x06,0xeb,0x07,0xe0,
- 0x08,0x88,0x09,0x40,0x0a,0x80,0x0b,0x44,0x0c,0x40,0x0d,0x00,0x0e,0x81,0x0f,0x2a,
- 0x10,0x06,0x11,0x00,0x12,0xc8,0x13,0x80,0x14,0x00,0x15,0x11,0x16,0x01,0x17,0x42,
- 0x18,0x40,0x19,0x80,0x40,0x00,0x41,0xff,0x42,0xff,0x43,0xff,0x44,0xff,0x45,0xff,
- 0x46,0xff,0x47,0xff,0x48,0xff,0x49,0xff,0x4a,0xff,0x4b,0xff,0x4c,0xff,0x4d,0xff,
- 0x4e,0xff,0x4f,0xff,0x50,0xff,0x51,0xff,0x52,0xff,0x53,0xff,0x54,0x5f,0x55,0xff,
- 0x56,0xff,0x57,0xff,0x58,0x00,0x59,0x47,0x5a,0x03,0x5b,0x03,0x5d,0x3e,0x5e,0x00,
- 0x80,0x1c,0x83,0x01,0x84,0xa5,0x85,0x10,0x86,0x45,0x87,0x41,0x88,0xf0,0x88,0x00,
- 0x88,0xf0,0x90,0x00,0x91,0x08,0x92,0x00,0x93,0x80,0x94,0x08,0x95,0x00,0x96,0xc0,
- 0x97,0x02,0x98,0x13,0x99,0x00,0x9a,0x38,0x9b,0x01,0x9c,0x80,0x9d,0x02,0x9e,0x06,
- 0x9f,0x01,0xa0,0x01,0xa1,0x00,0xa2,0x00,0xa4,0x80,0xa5,0x36,0xa6,0x36,0xa8,0x67,
- 0xa9,0x04,0xaa,0x00,0xac,0x33,0xad,0x02,0xae,0x00,0xb0,0xcd,0xb1,0x04,0xb2,0xcd,
- 0xb3,0x04,0xb4,0x01,0xb8,0x00,0xb9,0x00,0xba,0x00,0xbb,0x00,0xbc,0x00,0xbd,0x00,
- 0xbe,0x00,0xbf,0x00
-};
-
-#define TVNORMS ARRAY_SIZE(tvnorms)
-
/* supported controls */
/* Common to all boards */
static struct v4l2_queryctrl em28xx_qctrl[] = {
.step = 0x1,
.default_value = 0x1f,
.flags = 0,
- },{
+ }, {
.id = V4L2_CID_AUDIO_MUTE,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Mute",
}
};
-/* FIXME: These are specific to saa711x - should be moved to its code */
-static struct v4l2_queryctrl saa711x_qctrl[] = {
- {
- .id = V4L2_CID_BRIGHTNESS,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Brightness",
- .minimum = -128,
- .maximum = 127,
- .step = 1,
- .default_value = 0,
- .flags = 0,
- },{
- .id = V4L2_CID_CONTRAST,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Contrast",
- .minimum = 0x0,
- .maximum = 0x1f,
- .step = 0x1,
- .default_value = 0x10,
- .flags = 0,
- },{
- .id = V4L2_CID_SATURATION,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Saturation",
- .minimum = 0x0,
- .maximum = 0x1f,
- .step = 0x1,
- .default_value = 0x10,
- .flags = 0,
- },{
- .id = V4L2_CID_RED_BALANCE,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Red chroma balance",
- .minimum = -128,
- .maximum = 127,
- .step = 1,
- .default_value = 0,
- .flags = 0,
- },{
- .id = V4L2_CID_BLUE_BALANCE,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Blue chroma balance",
- .minimum = -128,
- .maximum = 127,
- .step = 1,
- .default_value = 0,
- .flags = 0,
- },{
- .id = V4L2_CID_GAMMA,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Gamma",
- .minimum = 0x0,
- .maximum = 0x3f,
- .step = 0x1,
- .default_value = 0x20,
- .flags = 0,
- }
-};
-
static struct usb_driver em28xx_usb_driver;
-static DEFINE_MUTEX(em28xx_sysfs_lock);
-static DECLARE_RWSEM(em28xx_disconnect);
-
-/********************* v4l2 interface ******************************************/
+/* ------------------------------------------------------------------
+ DMA and thread functions
+ ------------------------------------------------------------------*/
/*
- * em28xx_config()
- * inits registers with sane defaults
+ * Announces that a buffer were filled and request the next
*/
-static int em28xx_config(struct em28xx *dev)
+static inline void buffer_filled(struct em28xx *dev,
+ struct em28xx_dmaqueue *dma_q,
+ struct em28xx_buffer *buf)
{
+ /* Advice that buffer was filled */
+ em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
+ buf->vb.state = VIDEOBUF_DONE;
+ buf->vb.field_count++;
+ do_gettimeofday(&buf->vb.ts);
- /* Sets I2C speed to 100 KHz */
- em28xx_write_regs_req(dev, 0x00, 0x06, "\x40", 1);
-
- /* enable vbi capturing */
-
- em28xx_write_regs_req(dev,0x00,0x0e,"\xC0",1);
- em28xx_write_regs_req(dev,0x00,0x0f,"\x80",1);
- em28xx_write_regs_req(dev,0x00,0x11,"\x51",1);
-
- em28xx_audio_usb_mute(dev, 1);
- dev->mute = 1; /* maybe not the right place... */
- dev->volume = 0x1f;
- em28xx_audio_analog_set(dev);
- em28xx_audio_analog_setup(dev);
- em28xx_outfmt_set_yuv422(dev);
- em28xx_colorlevels_set_default(dev);
- em28xx_compression_disable(dev);
+ dev->isoc_ctl.buf = NULL;
- return 0;
+ list_del(&buf->vb.queue);
+ wake_up(&buf->vb.done);
}
/*
- * em28xx_config_i2c()
- * configure i2c attached devices
+ * Identify the buffer header type and properly handles
*/
-static void em28xx_config_i2c(struct em28xx *dev)
+static void em28xx_copy_video(struct em28xx *dev,
+ struct em28xx_dmaqueue *dma_q,
+ struct em28xx_buffer *buf,
+ unsigned char *p,
+ unsigned char *outp, unsigned long len)
{
- struct v4l2_frequency f;
- struct video_decoder_init em28xx_vdi = {.data = NULL };
+ void *fieldstart, *startwrite, *startread;
+ int linesdone, currlinedone, offset, lencopy, remain;
+ int bytesperline = dev->width << 1;
+ if (dma_q->pos + len > buf->vb.size)
+ len = buf->vb.size - dma_q->pos;
- /* configure decoder */
- if(dev->model == EM2820_BOARD_MSI_VOX_USB_2){
- em28xx_vdi.data=saa7114_i2c_init;
- em28xx_vdi.len=sizeof(saa7114_i2c_init);
- }
-
+ if (p[0] != 0x88 && p[0] != 0x22) {
+ em28xx_isocdbg("frame is not complete\n");
+ len += 4;
+ } else
+ p += 4;
- em28xx_i2c_call_clients(dev, DECODER_INIT, &em28xx_vdi);
- em28xx_i2c_call_clients(dev, DECODER_SET_INPUT, &dev->ctl_input);
-/* em28xx_i2c_call_clients(dev,DECODER_SET_PICTURE, &dev->vpic); */
-/* em28xx_i2c_call_clients(dev,DECODER_SET_NORM,&dev->tvnorm->id); */
-/* em28xx_i2c_call_clients(dev,DECODER_ENABLE_OUTPUT,&output); */
-/* em28xx_i2c_call_clients(dev,DECODER_DUMP, NULL); */
+ startread = p;
+ remain = len;
- /* configure tuner */
- f.tuner = 0;
- f.type = V4L2_TUNER_ANALOG_TV;
- f.frequency = 9076; /* FIXME:remove magic number */
- dev->ctl_freq = f.frequency;
- em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f);
+ /* Interlaces frame */
+ if (buf->top_field)
+ fieldstart = outp;
+ else
+ fieldstart = outp + bytesperline;
+
+ linesdone = dma_q->pos / bytesperline;
+ currlinedone = dma_q->pos % bytesperline;
+ offset = linesdone * bytesperline * 2 + currlinedone;
+ startwrite = fieldstart + offset;
+ lencopy = bytesperline - currlinedone;
+ lencopy = lencopy > remain ? remain : lencopy;
+
+ if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
+ em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
+ ((char *)startwrite + lencopy) -
+ ((char *)outp + buf->vb.size));
+ lencopy = remain = (char *)outp + buf->vb.size - (char *)startwrite;
+ }
+ if (lencopy <= 0)
+ return;
+ memcpy(startwrite, startread, lencopy);
+
+ remain -= lencopy;
+
+ while (remain > 0) {
+ startwrite += lencopy + bytesperline;
+ startread += lencopy;
+ if (bytesperline > remain)
+ lencopy = remain;
+ else
+ lencopy = bytesperline;
+
+ if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
+ em28xx_isocdbg("Overflow of %zi bytes past buffer end (2)\n",
+ ((char *)startwrite + lencopy) -
+ ((char *)outp + buf->vb.size));
+ lencopy = remain = (char *)outp + buf->vb.size -
+ (char *)startwrite;
+ }
+ if (lencopy <= 0)
+ break;
- /* configure tda9887 */
+ memcpy(startwrite, startread, lencopy);
+ remain -= lencopy;
+ }
-/* em28xx_i2c_call_clients(dev,VIDIOC_S_STD,&dev->tvnorm->id); */
+ dma_q->pos += len;
}
-/*
- * em28xx_empty_framequeues()
- * prepare queues for incoming and outgoing frames
- */
-static void em28xx_empty_framequeues(struct em28xx *dev)
+static inline void print_err_status(struct em28xx *dev,
+ int packet, int status)
{
- u32 i;
-
- INIT_LIST_HEAD(&dev->inqueue);
- INIT_LIST_HEAD(&dev->outqueue);
-
- for (i = 0; i < EM28XX_NUM_FRAMES; i++) {
- dev->frame[i].state = F_UNUSED;
- dev->frame[i].buf.bytesused = 0;
+ char *errmsg = "Unknown";
+
+ switch (status) {
+ case -ENOENT:
+ errmsg = "unlinked synchronuously";
+ break;
+ case -ECONNRESET:
+ errmsg = "unlinked asynchronuously";
+ break;
+ case -ENOSR:
+ errmsg = "Buffer error (overrun)";
+ break;
+ case -EPIPE:
+ errmsg = "Stalled (device not responding)";
+ break;
+ case -EOVERFLOW:
+ errmsg = "Babble (bad cable?)";
+ break;
+ case -EPROTO:
+ errmsg = "Bit-stuff error (bad cable?)";
+ break;
+ case -EILSEQ:
+ errmsg = "CRC/Timeout (could be anything)";
+ break;
+ case -ETIME:
+ errmsg = "Device does not respond";
+ break;
+ }
+ if (packet < 0) {
+ em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
+ } else {
+ em28xx_isocdbg("URB packet %d, status %d [%s].\n",
+ packet, status, errmsg);
}
}
-static void video_mux(struct em28xx *dev, int index)
+/*
+ * video-buf generic routine to get the next available buffer
+ */
+static inline void get_next_buf(struct em28xx_dmaqueue *dma_q,
+ struct em28xx_buffer **buf)
{
- int input, ainput;
+ struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
+ char *outp;
- input = INPUT(index)->vmux;
- dev->ctl_input = index;
- dev->ctl_ainput = INPUT(index)->amux;
+ if (list_empty(&dma_q->active)) {
+ em28xx_isocdbg("No active queue to serve\n");
+ dev->isoc_ctl.buf = NULL;
+ *buf = NULL;
+ return;
+ }
- em28xx_i2c_call_clients(dev, DECODER_SET_INPUT, &input);
+ /* Get the next buffer */
+ *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
+ /* Cleans up buffer - Usefull for testing for frame/URB loss */
+ outp = videobuf_to_vmalloc(&(*buf)->vb);
+ memset(outp, 0, (*buf)->vb.size);
- em28xx_videodbg("Setting input index=%d, vmux=%d, amux=%d\n",index,input,dev->ctl_ainput);
+ dev->isoc_ctl.buf = *buf;
- if (dev->has_msp34xx) {
- if (dev->i2s_speed)
- em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ, &dev->i2s_speed);
- em28xx_i2c_call_clients(dev, VIDIOC_S_AUDIO, &dev->ctl_ainput);
- ainput = EM28XX_AUDIO_SRC_TUNER;
- em28xx_audio_source(dev, ainput);
- } else {
- switch (dev->ctl_ainput) {
- case 0:
- ainput = EM28XX_AUDIO_SRC_TUNER;
- break;
- default:
- ainput = EM28XX_AUDIO_SRC_LINE;
- }
- em28xx_audio_source(dev, ainput);
- }
+ return;
}
/*
- * em28xx_v4l2_open()
- * inits the device and starts isoc transfer
+ * Controls the isoc copy of each urb packet
*/
-static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
+static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
{
- int minor = iminor(inode);
- int errCode = 0;
- struct em28xx *h,*dev = NULL;
- struct list_head *list;
-
- list_for_each(list,&em28xx_devlist) {
- h = list_entry(list, struct em28xx, devlist);
- if (h->vdev->minor == minor) {
- dev = h;
- dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- }
- if (h->vbi_dev->minor == minor) {
- dev = h;
- dev->type = V4L2_BUF_TYPE_VBI_CAPTURE;
- }
- }
- if (NULL == dev)
- return -ENODEV;
-
- filp->private_data=dev;
+ struct em28xx_buffer *buf;
+ struct em28xx_dmaqueue *dma_q = urb->context;
+ unsigned char *outp = NULL;
+ int i, len = 0, rc = 1;
+ unsigned char *p;
- em28xx_videodbg("open minor=%d type=%s users=%d\n",
- minor,v4l2_type_names[dev->type],dev->users);
+ if (!dev)
+ return 0;
- if (!down_read_trylock(&em28xx_disconnect))
- return -ERESTARTSYS;
+ if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
+ return 0;
- if (dev->users) {
- em28xx_warn("this driver can be opened only once\n");
- up_read(&em28xx_disconnect);
- return -EBUSY;
+ if (urb->status < 0) {
+ print_err_status(dev, -1, urb->status);
+ if (urb->status == -ENOENT)
+ return 0;
}
- init_MUTEX(&dev->fileop_lock); /* to 1 == available */
- spin_lock_init(&dev->queue_lock);
- init_waitqueue_head(&dev->wait_frame);
- init_waitqueue_head(&dev->wait_stream);
-
- down(&dev->lock);
+ buf = dev->isoc_ctl.buf;
+ if (buf != NULL)
+ outp = videobuf_to_vmalloc(&buf->vb);
- if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
- em28xx_set_alternate(dev);
-
- dev->width = norm_maxw(dev);
- dev->height = norm_maxh(dev);
- dev->frame_size = dev->width * dev->height * 2;
- dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
- dev->bytesperline = dev->width * 2;
- dev->hscale = 0;
- dev->vscale = 0;
+ for (i = 0; i < urb->number_of_packets; i++) {
+ int status = urb->iso_frame_desc[i].status;
- em28xx_capture_start(dev, 1);
- em28xx_resolution_set(dev);
+ if (status < 0) {
+ print_err_status(dev, i, status);
+ if (urb->iso_frame_desc[i].status != -EPROTO)
+ continue;
+ }
- /* start the transfer */
- errCode = em28xx_init_isoc(dev);
- if (errCode)
- goto err;
+ len = urb->iso_frame_desc[i].actual_length - 4;
- video_mux(dev, 0);
- }
+ if (urb->iso_frame_desc[i].actual_length <= 0) {
+ /* em28xx_isocdbg("packet %d is empty",i); - spammy */
+ continue;
+ }
+ if (urb->iso_frame_desc[i].actual_length >
+ dev->max_pkt_size) {
+ em28xx_isocdbg("packet bigger than packet size");
+ continue;
+ }
- dev->users++;
- filp->private_data = dev;
- dev->io = IO_NONE;
- dev->stream = STREAM_OFF;
- dev->num_frames = 0;
+ p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
- /* prepare queues */
- em28xx_empty_framequeues(dev);
+ /* FIXME: incomplete buffer checks where removed to make
+ logic simpler. Impacts of those changes should be evaluated
+ */
+ if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
+ em28xx_isocdbg("VBI HEADER!!!\n");
+ /* FIXME: Should add vbi copy */
+ continue;
+ }
+ if (p[0] == 0x22 && p[1] == 0x5a) {
+ em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
+ len, (p[2] & 1)? "odd" : "even");
+
+ if (!(p[2] & 1)) {
+ if (buf != NULL)
+ buffer_filled(dev, dma_q, buf);
+ get_next_buf(dma_q, &buf);
+ if (buf == NULL)
+ outp = NULL;
+ else
+ outp = videobuf_to_vmalloc(&buf->vb);
+ }
- dev->state |= DEV_INITIALIZED;
+ if (buf != NULL) {
+ if (p[2] & 1)
+ buf->top_field = 0;
+ else
+ buf->top_field = 1;
+ }
- err:
- up(&dev->lock);
- up_read(&em28xx_disconnect);
- return errCode;
+ dma_q->pos = 0;
+ }
+ if (buf != NULL)
+ em28xx_copy_video(dev, dma_q, buf, p, outp, len);
+ }
+ return rc;
}
-/*
- * em28xx_realease_resources()
- * 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)
+/* ------------------------------------------------------------------
+ Videobuf operations
+ ------------------------------------------------------------------*/
+
+static int
+buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
{
- mutex_lock(&em28xx_sysfs_lock);
+ struct em28xx_fh *fh = vq->priv_data;
+ struct em28xx *dev = fh->dev;
+ struct v4l2_frequency f;
- /*FIXME: I2C IR should be disconnected */
+ *size = 16 * fh->dev->width * fh->dev->height >> 3;
+ if (0 == *count)
+ *count = EM28XX_DEF_BUF;
- em28xx_info("V4L2 devices /dev/video%d and /dev/vbi%d deregistered\n",
- dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN,
- dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN);
- list_del(&dev->devlist);
- video_unregister_device(dev->vdev);
- video_unregister_device(dev->vbi_dev);
- em28xx_i2c_unregister(dev);
- usb_put_dev(dev->udev);
- mutex_unlock(&em28xx_sysfs_lock);
+ if (*count < EM28XX_MIN_BUF)
+ *count = EM28XX_MIN_BUF;
+ /* Ask tuner to go to analog mode */
+ memset(&f, 0, sizeof(f));
+ f.frequency = dev->ctl_freq;
- /* Mark device as unused */
- em28xx_devused&=~(1<<dev->devno);
+ em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f);
+
+ return 0;
}
-/*
- * em28xx_v4l2_close()
- * stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls
- */
-static int em28xx_v4l2_close(struct inode *inode, struct file *filp)
+/* This is called *without* dev->slock held; please keep it that way */
+static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
{
- int errCode;
- struct em28xx *dev=filp->private_data;
+ struct em28xx_fh *fh = vq->priv_data;
+ struct em28xx *dev = fh->dev;
+ unsigned long flags = 0;
+ if (in_interrupt())
+ BUG();
+
+ /* We used to wait for the buffer to finish here, but this didn't work
+ because, as we were keeping the state as VIDEOBUF_QUEUED,
+ videobuf_queue_cancel marked it as finished for us.
+ (Also, it could wedge forever if the hardware was misconfigured.)
+
+ This should be safe; by the time we get here, the buffer isn't
+ queued anymore. If we ever start marking the buffers as
+ VIDEOBUF_ACTIVE, it won't be, though.
+ */
+ spin_lock_irqsave(&dev->slock, flags);
+ if (dev->isoc_ctl.buf == buf)
+ dev->isoc_ctl.buf = NULL;
+ spin_unlock_irqrestore(&dev->slock, flags);
+
+ videobuf_vmalloc_free(&buf->vb);
+ buf->vb.state = VIDEOBUF_NEEDS_INIT;
+}
- em28xx_videodbg("users=%d\n", dev->users);
+static int
+buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
+ enum v4l2_field field)
+{
+ struct em28xx_fh *fh = vq->priv_data;
+ struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
+ struct em28xx *dev = fh->dev;
+ int rc = 0, urb_init = 0;
- down(&dev->lock);
+ /* FIXME: It assumes depth = 16 */
+ /* The only currently supported format is 16 bits/pixel */
+ buf->vb.size = 16 * dev->width * dev->height >> 3;
- em28xx_uninit_isoc(dev);
+ if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
+ return -EINVAL;
- em28xx_release_buffers(dev);
+ buf->vb.width = dev->width;
+ buf->vb.height = dev->height;
+ buf->vb.field = field;
- /* the device is already disconnect, free the remaining resources */
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_release_resources(dev);
- up(&dev->lock);
- kfree(dev);
- return 0;
+ if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
+ rc = videobuf_iolock(vq, &buf->vb, NULL);
+ if (rc < 0)
+ goto fail;
}
- /* set alternate 0 */
- dev->alt = 0;
- em28xx_videodbg("setting alternate 0\n");
- errCode = usb_set_interface(dev->udev, 0, 0);
- if (errCode < 0) {
- em28xx_errdev ("cannot change alternate number to 0 (error=%i)\n",
- errCode);
+ if (!dev->isoc_ctl.num_bufs)
+ urb_init = 1;
+
+ if (urb_init) {
+ rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
+ EM28XX_NUM_BUFS, dev->max_pkt_size,
+ em28xx_isoc_copy);
+ if (rc < 0)
+ goto fail;
}
- dev->users--;
- wake_up_interruptible_nr(&dev->open, 1);
- up(&dev->lock);
+ buf->vb.state = VIDEOBUF_PREPARED;
return 0;
+
+fail:
+ free_buffer(vq, buf);
+ return rc;
}
-/*
- * em28xx_v4l2_read()
- * will allocate buffers when called for the first time
- */
-static ssize_t
-em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count,
- loff_t * f_pos)
+static void
+buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
{
- struct em28xx_frame_t *f, *i;
- unsigned long lock_flags;
- int ret = 0;
- struct em28xx *dev = filp->private_data;
-
- if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
- em28xx_videodbg("V4l2_Buf_type_videocapture is set\n");
- }
- if (dev->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
- em28xx_videodbg("V4L2_BUF_TYPE_VBI_CAPTURE is set\n");
- em28xx_videodbg("not supported yet! ...\n");
- if (copy_to_user(buf, "", 1)) {
- up(&dev->fileop_lock);
- return -EFAULT;
- }
- return (1);
- }
- if (dev->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
- em28xx_videodbg("V4L2_BUF_TYPE_SLICED_VBI_CAPTURE is set\n");
- em28xx_videodbg("not supported yet! ...\n");
- if (copy_to_user(buf, "", 1)) {
- up(&dev->fileop_lock);
- return -EFAULT;
- }
- return (1);
- }
+ struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
+ struct em28xx_fh *fh = vq->priv_data;
+ struct em28xx *dev = fh->dev;
+ struct em28xx_dmaqueue *vidq = &dev->vidq;
- if (down_interruptible(&dev->fileop_lock))
- return -ERESTARTSYS;
+ buf->vb.state = VIDEOBUF_QUEUED;
+ list_add_tail(&buf->vb.queue, &vidq->active);
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_videodbg("device not present\n");
- up(&dev->fileop_lock);
- return -ENODEV;
- }
+}
- if (dev->state & DEV_MISCONFIGURED) {
- em28xx_videodbg("device misconfigured; close and open it again\n");
- up(&dev->fileop_lock);
- return -EIO;
- }
+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;
+ struct em28xx *dev = (struct em28xx *)fh->dev;
- if (dev->io == IO_MMAP) {
- em28xx_videodbg ("IO method is set to mmap; close and open"
- " the device again to choose the read method\n");
- up(&dev->fileop_lock);
- return -EINVAL;
- }
+ em28xx_isocdbg("em28xx: called buffer_release\n");
- if (dev->io == IO_NONE) {
- if (!em28xx_request_buffers(dev, EM28XX_NUM_READ_FRAMES)) {
- em28xx_errdev("read failed, not enough memory\n");
- up(&dev->fileop_lock);
- return -ENOMEM;
- }
- dev->io = IO_READ;
- dev->stream = STREAM_ON;
- em28xx_queue_unusedframes(dev);
- }
+ free_buffer(vq, buf);
+}
- if (!count) {
- up(&dev->fileop_lock);
- return 0;
- }
+static struct videobuf_queue_ops em28xx_video_qops = {
+ .buf_setup = buffer_setup,
+ .buf_prepare = buffer_prepare,
+ .buf_queue = buffer_queue,
+ .buf_release = buffer_release,
+};
- if (list_empty(&dev->outqueue)) {
- if (filp->f_flags & O_NONBLOCK) {
- up(&dev->fileop_lock);
- return -EAGAIN;
- }
- ret = wait_event_interruptible
- (dev->wait_frame,
- (!list_empty(&dev->outqueue)) ||
- (dev->state & DEV_DISCONNECTED));
- if (ret) {
- up(&dev->fileop_lock);
- return ret;
- }
- if (dev->state & DEV_DISCONNECTED) {
- up(&dev->fileop_lock);
- return -ENODEV;
- }
- }
+/********************* v4l2 interface **************************************/
- f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame);
+/*
+ * em28xx_config()
+ * inits registers with sane defaults
+ */
+static int em28xx_config(struct em28xx *dev)
+{
- spin_lock_irqsave(&dev->queue_lock, lock_flags);
- list_for_each_entry(i, &dev->outqueue, frame)
- i->state = F_UNUSED;
- INIT_LIST_HEAD(&dev->outqueue);
- spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
+ /* Sets I2C speed to 100 KHz */
+ if (!dev->is_em2800)
+ em28xx_write_regs_req(dev, 0x00, 0x06, "\x40", 1);
- em28xx_queue_unusedframes(dev);
+ /* enable vbi capturing */
- if (count > f->buf.length)
- count = f->buf.length;
+/* 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);
- if (copy_to_user(buf, f->bufmem, count)) {
- up(&dev->fileop_lock);
- return -EFAULT;
- }
- *f_pos += count;
+ dev->mute = 1; /* maybe not the right place... */
+ dev->volume = 0x1f;
- up(&dev->fileop_lock);
+ em28xx_outfmt_set_yuv422(dev);
+ em28xx_colorlevels_set_default(dev);
+ em28xx_compression_disable(dev);
- return count;
+ return 0;
}
/*
- * em28xx_v4l2_poll()
- * will allocate buffers when called for the first time
+ * em28xx_config_i2c()
+ * configure i2c attached devices
*/
-static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait)
+static void em28xx_config_i2c(struct em28xx *dev)
{
- unsigned int mask = 0;
- struct em28xx *dev = filp->private_data;
-
- if (down_interruptible(&dev->fileop_lock))
- return POLLERR;
+ struct v4l2_routing route;
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_videodbg("device not present\n");
- } else if (dev->state & DEV_MISCONFIGURED) {
- em28xx_videodbg("device is misconfigured; close and open it again\n");
- } else {
- if (dev->io == IO_NONE) {
- if (!em28xx_request_buffers
- (dev, EM28XX_NUM_READ_FRAMES)) {
- em28xx_warn
- ("poll() failed, not enough memory\n");
- } else {
- dev->io = IO_READ;
- dev->stream = STREAM_ON;
- }
- }
+ route.input = INPUT(dev->ctl_input)->vmux;
+ route.output = 0;
+ em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, NULL);
+ em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
+ em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL);
+}
- if (dev->io == IO_READ) {
- em28xx_queue_unusedframes(dev);
- poll_wait(filp, &dev->wait_frame, wait);
+static void video_mux(struct em28xx *dev, int index)
+{
+ struct v4l2_routing route;
- if (!list_empty(&dev->outqueue))
- mask |= POLLIN | POLLRDNORM;
+ route.input = INPUT(index)->vmux;
+ route.output = 0;
+ dev->ctl_input = index;
+ dev->ctl_ainput = INPUT(index)->amux;
- up(&dev->fileop_lock);
+ em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
- return mask;
+ if (dev->has_msp34xx) {
+ 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);
}
- up(&dev->fileop_lock);
- return POLLERR;
+ em28xx_audio_analog_set(dev);
}
-/*
- * em28xx_vm_open()
- */
-static void em28xx_vm_open(struct vm_area_struct *vma)
+/* Usage lock check functions */
+static int res_get(struct em28xx_fh *fh)
{
- struct em28xx_frame_t *f = vma->vm_private_data;
- f->vma_use_count++;
+ struct em28xx *dev = fh->dev;
+ int rc = 0;
+
+ /* This instance already has stream_on */
+ if (fh->stream_on)
+ return rc;
+
+ if (dev->stream_on)
+ return -EINVAL;
+
+ mutex_lock(&dev->lock);
+ dev->stream_on = 1;
+ fh->stream_on = 1;
+ mutex_unlock(&dev->lock);
+ return rc;
}
-/*
- * em28xx_vm_close()
- */
-static void em28xx_vm_close(struct vm_area_struct *vma)
+static int res_check(struct em28xx_fh *fh)
{
- /* NOTE: buffers are not freed here */
- struct em28xx_frame_t *f = vma->vm_private_data;
- f->vma_use_count--;
+ return (fh->stream_on);
}
-static struct vm_operations_struct em28xx_vm_ops = {
- .open = em28xx_vm_open,
- .close = em28xx_vm_close,
-};
+static void res_free(struct em28xx_fh *fh)
+{
+ struct em28xx *dev = fh->dev;
+
+ mutex_lock(&dev->lock);
+ fh->stream_on = 0;
+ dev->stream_on = 0;
+ mutex_unlock(&dev->lock);
+}
/*
- * em28xx_v4l2_mmap()
+ * em28xx_get_ctrl()
+ * return the current saturation, brightness or contrast, mute state
*/
-static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
-{
- unsigned long size = vma->vm_end - vma->vm_start,
- start = vma->vm_start;
- void *pos;
- u32 i;
-
- struct em28xx *dev = filp->private_data;
-
- if (down_interruptible(&dev->fileop_lock))
- return -ERESTARTSYS;
-
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_videodbg("mmap: device not present\n");
- up(&dev->fileop_lock);
- return -ENODEV;
- }
-
- if (dev->state & DEV_MISCONFIGURED) {
- em28xx_videodbg ("mmap: Device is misconfigured; close and "
- "open it again\n");
- up(&dev->fileop_lock);
- return -EIO;
- }
-
- if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) ||
- size != PAGE_ALIGN(dev->frame[0].buf.length)) {
- up(&dev->fileop_lock);
- return -EINVAL;
- }
-
- for (i = 0; i < dev->num_frames; i++) {
- if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff)
- break;
- }
- if (i == dev->num_frames) {
- em28xx_videodbg("mmap: user supplied mapping address is out of range\n");
- up(&dev->fileop_lock);
- return -EINVAL;
- }
-
- /* VM_IO is eventually going to replace PageReserved altogether */
- vma->vm_flags |= VM_IO;
- vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
-
- pos = dev->frame[i].bufmem;
- while (size > 0) { /* size is page-aligned */
- if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
- em28xx_videodbg("mmap: vm_insert_page failed\n");
- up(&dev->fileop_lock);
- return -EAGAIN;
- }
- start += PAGE_SIZE;
- pos += PAGE_SIZE;
- size -= PAGE_SIZE;
- }
-
- vma->vm_ops = &em28xx_vm_ops;
- vma->vm_private_data = &dev->frame[i];
-
- em28xx_vm_open(vma);
- up(&dev->fileop_lock);
- return 0;
-}
-
-/*
- * em28xx_get_ctrl()
- * return the current saturation, brightness or contrast, mute state
- */
-static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
+static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
{
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
}
}
-/*FIXME: should be moved to saa711x */
-static int saa711x_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
-{
- s32 tmp;
- switch (ctrl->id) {
- case V4L2_CID_BRIGHTNESS:
- if ((tmp = em28xx_brightness_get(dev)) < 0)
- return -EIO;
- ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
- return 0;
- case V4L2_CID_CONTRAST:
- if ((ctrl->value = em28xx_contrast_get(dev)) < 0)
- return -EIO;
- return 0;
- case V4L2_CID_SATURATION:
- if ((ctrl->value = em28xx_saturation_get(dev)) < 0)
- return -EIO;
- return 0;
- case V4L2_CID_RED_BALANCE:
- if ((tmp = em28xx_v_balance_get(dev)) < 0)
- return -EIO;
- ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
- return 0;
- case V4L2_CID_BLUE_BALANCE:
- if ((tmp = em28xx_u_balance_get(dev)) < 0)
- return -EIO;
- ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
- return 0;
- case V4L2_CID_GAMMA:
- if ((ctrl->value = em28xx_gamma_get(dev)) < 0)
- return -EIO;
- return 0;
- default:
- return -EINVAL;
- }
-}
-
/*
* em28xx_set_ctrl()
* mute or set new saturation, brightness or contrast
case V4L2_CID_AUDIO_MUTE:
if (ctrl->value != dev->mute) {
dev->mute = ctrl->value;
- em28xx_audio_usb_mute(dev, ctrl->value);
return em28xx_audio_analog_set(dev);
}
return 0;
}
}
-/*FIXME: should be moved to saa711x */
-static int saa711x_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
+static int check_dev(struct em28xx *dev)
{
- switch (ctrl->id) {
- case V4L2_CID_BRIGHTNESS:
- return em28xx_brightness_set(dev, ctrl->value);
- case V4L2_CID_CONTRAST:
- return em28xx_contrast_set(dev, ctrl->value);
- case V4L2_CID_SATURATION:
- return em28xx_saturation_set(dev, ctrl->value);
- case V4L2_CID_RED_BALANCE:
- return em28xx_v_balance_set(dev, ctrl->value);
- case V4L2_CID_BLUE_BALANCE:
- return em28xx_u_balance_set(dev, ctrl->value);
- case V4L2_CID_GAMMA:
- return em28xx_gamma_set(dev, ctrl->value);
- default:
- return -EINVAL;
+ if (dev->state & DEV_DISCONNECTED) {
+ em28xx_errdev("v4l2 ioctl: device not present\n");
+ return -ENODEV;
}
+
+ if (dev->state & DEV_MISCONFIGURED) {
+ em28xx_errdev("v4l2 ioctl: device is misconfigured; "
+ "close and open it again\n");
+ return -EIO;
+ }
+ return 0;
}
-/*
- * em28xx_stream_interrupt()
- * stops streaming
- */
-static int em28xx_stream_interrupt(struct em28xx *dev)
+static void get_scale(struct em28xx *dev,
+ unsigned int width, unsigned int height,
+ unsigned int *hscale, unsigned int *vscale)
{
- int ret = 0;
-
- /* stop reading from the device */
+ unsigned int maxw = norm_maxw(dev);
+ unsigned int maxh = norm_maxh(dev);
- dev->stream = STREAM_INTERRUPT;
- ret = wait_event_timeout(dev->wait_stream,
- (dev->stream == STREAM_OFF) ||
- (dev->state & DEV_DISCONNECTED),
- EM28XX_URB_TIMEOUT);
- if (dev->state & DEV_DISCONNECTED)
- return -ENODEV;
- else if (ret) {
- dev->state |= DEV_MISCONFIGURED;
- em28xx_videodbg("device is misconfigured; close and "
- "open /dev/video%d again\n",
- dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN);
- return ret;
- }
+ *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
+ if (*hscale >= 0x4000)
+ *hscale = 0x3fff;
- return 0;
+ *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
+ if (*vscale >= 0x4000)
+ *vscale = 0x3fff;
}
-static int em28xx_set_norm(struct em28xx *dev, int width, int height)
+/* ------------------------------------------------------------------
+ IOCTL vidioc handling
+ ------------------------------------------------------------------*/
+
+static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
{
- unsigned int hscale, vscale;
- unsigned int maxh, maxw;
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
- maxw = norm_maxw(dev);
- maxh = norm_maxh(dev);
+ mutex_lock(&dev->lock);
+
+ f->fmt.pix.width = dev->width;
+ f->fmt.pix.height = dev->height;
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
+ f->fmt.pix.bytesperline = dev->width * 2;
+ f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+
+ /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
+ f->fmt.pix.field = dev->interlaced ?
+ V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
- /* width must even because of the YUYV format */
- /* height must be even because of interlacing */
+ mutex_unlock(&dev->lock);
+ return 0;
+}
+
+static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int width = f->fmt.pix.width;
+ int height = f->fmt.pix.height;
+ unsigned int maxw = norm_maxw(dev);
+ unsigned int maxh = norm_maxh(dev);
+ unsigned int hscale, vscale;
+
+ /* width must even because of the YUYV format
+ height must be even because of interlacing */
height &= 0xfffe;
width &= 0xfffe;
if (width > maxw)
width = maxw;
- if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000)
- hscale = 0x3fff;
- width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
+ mutex_lock(&dev->lock);
+
+ if (dev->is_em2800) {
+ /* the em2800 can only scale down to 50% */
+ if (height % (maxh / 2))
+ height = maxh;
+ if (width % (maxw / 2))
+ width = maxw;
+ /* according to empiatech support */
+ /* the MaxPacketSize is to small to support */
+ /* framesizes larger than 640x480 @ 30 fps */
+ /* or 640x576 @ 25 fps. As this would cut */
+ /* of a part of the image we prefer */
+ /* 360x576 or 360x480 for now */
+ if (width == maxw && height == maxh)
+ width /= 2;
+ }
- if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000)
- vscale = 0x3fff;
+ get_scale(dev, width, height, &hscale, &vscale);
+
+ width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
+ f->fmt.pix.width = width;
+ f->fmt.pix.height = height;
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
+ f->fmt.pix.bytesperline = width * 2;
+ f->fmt.pix.sizeimage = width * 2 * height;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+ f->fmt.pix.field = V4L2_FIELD_INTERLACED;
+
+ mutex_unlock(&dev->lock);
+ return 0;
+}
+
+static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ vidioc_try_fmt_vid_cap(file, priv, f);
+
+ mutex_lock(&dev->lock);
+
+ if (videobuf_queue_is_busy(&fh->vb_vidq)) {
+ em28xx_errdev("%s queue busy\n", __func__);
+ rc = -EBUSY;
+ goto out;
+ }
+
+ if (dev->stream_on && !fh->stream_on) {
+ em28xx_errdev("%s device in use by another fh\n", __func__);
+ rc = -EBUSY;
+ goto out;
+ }
+
+ /* set new image size */
+ dev->width = f->fmt.pix.width;
+ dev->height = f->fmt.pix.height;
+ get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
+
+ em28xx_set_alternate(dev);
+ em28xx_resolution_set(dev);
+
+ rc = 0;
+
+out:
+ mutex_unlock(&dev->lock);
+ return rc;
+}
+
+static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id * norm)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ struct v4l2_format f;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ mutex_lock(&dev->lock);
+ dev->norm = *norm;
+ mutex_unlock(&dev->lock);
+
+ /* Adjusts width/height, if needed */
+ f.fmt.pix.width = dev->width;
+ f.fmt.pix.height = dev->height;
+ vidioc_try_fmt_vid_cap(file, priv, &f);
+
+ mutex_lock(&dev->lock);
+
/* set new image size */
- dev->width = width;
- dev->height = height;
- dev->frame_size = dev->width * dev->height * 2;
- dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
- dev->bytesperline = dev->width * 2;
- dev->hscale = hscale;
- dev->vscale = vscale;
+ dev->width = f.fmt.pix.width;
+ dev->height = f.fmt.pix.height;
+ get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
em28xx_resolution_set(dev);
+ em28xx_i2c_call_clients(dev, VIDIOC_S_STD, &dev->norm);
+
+ mutex_unlock(&dev->lock);
+ return 0;
+}
+
+static const char *iname[] = {
+ [EM28XX_VMUX_COMPOSITE1] = "Composite1",
+ [EM28XX_VMUX_COMPOSITE2] = "Composite2",
+ [EM28XX_VMUX_COMPOSITE3] = "Composite3",
+ [EM28XX_VMUX_COMPOSITE4] = "Composite4",
+ [EM28XX_VMUX_SVIDEO] = "S-Video",
+ [EM28XX_VMUX_TELEVISION] = "Television",
+ [EM28XX_VMUX_CABLE] = "Cable TV",
+ [EM28XX_VMUX_DVB] = "DVB",
+ [EM28XX_VMUX_DEBUG] = "for debug only",
+};
+
+static int vidioc_enum_input(struct file *file, void *priv,
+ struct v4l2_input *i)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ unsigned int n;
+
+ n = i->index;
+ if (n >= MAX_EM28XX_INPUT)
+ return -EINVAL;
+ if (0 == INPUT(n)->type)
+ return -EINVAL;
+
+ i->index = n;
+ i->type = V4L2_INPUT_TYPE_CAMERA;
+
+ strcpy(i->name, iname[INPUT(n)->type]);
+
+ if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
+ (EM28XX_VMUX_CABLE == INPUT(n)->type))
+ i->type = V4L2_INPUT_TYPE_TUNER;
+
+ i->std = dev->vdev->tvnorms;
return 0;
}
+static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+
+ *i = dev->ctl_input;
+
+ return 0;
+}
+
+static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (i >= MAX_EM28XX_INPUT)
+ return -EINVAL;
+ if (0 == INPUT(i)->type)
+ return -EINVAL;
+
+ mutex_lock(&dev->lock);
+
+ video_mux(dev, i);
+
+ mutex_unlock(&dev->lock);
+ return 0;
+}
+
+static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ unsigned int index = a->index;
+
+ if (a->index > 1)
+ return -EINVAL;
+
+ index = dev->ctl_ainput;
+
+ if (index == 0)
+ strcpy(a->name, "Television");
+ else
+ strcpy(a->name, "Line In");
+
+ a->capability = V4L2_AUDCAP_STEREO;
+ a->index = index;
+
+ return 0;
+}
+
+static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+
+ if (a->index != dev->ctl_ainput)
+ return -EINVAL;
+
+ return 0;
+}
-static int em28xx_get_fmt(struct em28xx *dev, struct v4l2_format *format)
+static int vidioc_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *qc)
{
- em28xx_videodbg("VIDIOC_G_FMT: type=%s\n",
- (format->type ==V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
- "V4L2_BUF_TYPE_VIDEO_CAPTURE" :
- (format->type ==V4L2_BUF_TYPE_VBI_CAPTURE) ?
- "V4L2_BUF_TYPE_VBI_CAPTURE" :
- (format->type ==V4L2_CAP_SLICED_VBI_CAPTURE) ?
- "V4L2_BUF_TYPE_SLICED_VBI_CAPTURE " :
- "not supported");
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int id = qc->id;
+ int i;
+ int rc;
- if (format->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
- format->fmt.pix.width = dev->width;
- format->fmt.pix.height = dev->height;
- format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
- format->fmt.pix.bytesperline = dev->bytesperline;
- format->fmt.pix.sizeimage = dev->frame_size;
- format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
- format->fmt.pix.field = dev->interlaced ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
- em28xx_videodbg("VIDIOC_G_FMT: %dx%d\n", dev->width,
- dev->height);
+ memset(qc, 0, sizeof(*qc));
+
+ qc->id = id;
+
+ if (!dev->has_msp34xx) {
+ for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
+ if (qc->id && qc->id == em28xx_qctrl[i].id) {
+ memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
+ return 0;
+ }
+ }
+ }
+ mutex_lock(&dev->lock);
+ em28xx_i2c_call_clients(dev, VIDIOC_QUERYCTRL, qc);
+ mutex_unlock(&dev->lock);
+
+ if (qc->type)
return 0;
+ else
+ return -EINVAL;
+}
+
+static int vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+ mutex_lock(&dev->lock);
+
+ if (!dev->has_msp34xx)
+ rc = em28xx_get_ctrl(dev, ctrl);
+ else
+ rc = -EINVAL;
+
+ if (rc == -EINVAL) {
+ em28xx_i2c_call_clients(dev, VIDIOC_G_CTRL, ctrl);
+ rc = 0;
}
- return -EINVAL;
+ mutex_unlock(&dev->lock);
+ return rc;
}
+static int vidioc_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ u8 i;
+ int rc;
-/*
- * em28xx_v4l2_do_ioctl()
- * This function is _not_ called directly, but from
- * em28xx_v4l2_ioctl. Userspace
- * copying is done already, arg is a kernel pointer.
- */
-static int em28xx_do_ioctl(struct inode *inode, struct file *filp,
- struct em28xx *dev, unsigned int cmd, void *arg,
- v4l2_kioctl driver_ioctl)
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ mutex_lock(&dev->lock);
+
+ if (dev->has_msp34xx)
+ em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl);
+ else {
+ rc = 1;
+ for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
+ if (ctrl->id == em28xx_qctrl[i].id) {
+ if (ctrl->value < em28xx_qctrl[i].minimum ||
+ ctrl->value > em28xx_qctrl[i].maximum) {
+ rc = -ERANGE;
+ break;
+ }
+
+ rc = em28xx_set_ctrl(dev, ctrl);
+ break;
+ }
+ }
+ }
+
+ /* Control not found - try to send it to the attached devices */
+ if (rc == 1) {
+ em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl);
+ rc = 0;
+ }
+
+ mutex_unlock(&dev->lock);
+ return rc;
+}
+
+static int vidioc_g_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *t)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (0 != t->index)
+ return -EINVAL;
+
+ strcpy(t->name, "Tuner");
+
+ mutex_lock(&dev->lock);
+
+ em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t);
+
+ mutex_unlock(&dev->lock);
+ return 0;
+}
+
+static int vidioc_s_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *t)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (0 != t->index)
+ return -EINVAL;
+
+ mutex_lock(&dev->lock);
+
+ em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t);
+
+ mutex_unlock(&dev->lock);
+ return 0;
+}
+
+static int vidioc_g_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+
+ f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
+ f->frequency = dev->ctl_freq;
+
+ return 0;
+}
+
+static int vidioc_s_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (0 != f->tuner)
+ return -EINVAL;
+
+ if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
+ return -EINVAL;
+ if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
+ return -EINVAL;
+
+ mutex_lock(&dev->lock);
+
+ dev->ctl_freq = f->frequency;
+ em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f);
+
+ mutex_unlock(&dev->lock);
+ return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int em28xx_reg_len(int reg)
{
+ switch (reg) {
+ case EM28XX_R40_AC97LSB:
+ case EM28XX_R30_HSCALELOW:
+ case EM28XX_R32_VSCALELOW:
+ return 2;
+ default:
+ return 1;
+ }
+}
+
+static int vidioc_g_register(struct file *file, void *priv,
+ struct v4l2_register *reg)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
int ret;
- switch (cmd) {
- /* ---------- tv norms ---------- */
- case VIDIOC_ENUMSTD:
- {
- struct v4l2_standard *e = arg;
- unsigned int i;
-
- i = e->index;
- if (i >= TVNORMS)
- return -EINVAL;
- ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
- tvnorms[e->index].name);
- e->index = i;
- if (ret < 0)
- return ret;
- return 0;
- }
- case VIDIOC_G_STD:
- {
- v4l2_std_id *id = arg;
+ if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
+ return -EINVAL;
- *id = dev->tvnorm->id;
- return 0;
- }
- case VIDIOC_S_STD:
- {
- v4l2_std_id *id = arg;
- unsigned int i;
+ if (em28xx_reg_len(reg->reg) == 1) {
+ ret = em28xx_read_reg(dev, reg->reg);
+ if (ret < 0)
+ return ret;
- for (i = 0; i < TVNORMS; i++)
- if (*id == tvnorms[i].id)
- break;
- if (i == TVNORMS)
- for (i = 0; i < TVNORMS; i++)
- if (*id & tvnorms[i].id)
- break;
- if (i == TVNORMS)
- return -EINVAL;
+ reg->val = ret;
+ } else {
+ __le64 val = 0;
+ ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
+ reg->reg, (char *)&val, 2);
+ if (ret < 0)
+ return ret;
- down(&dev->lock);
- dev->tvnorm = &tvnorms[i];
+ reg->val = le64_to_cpu(val);
+ }
- em28xx_set_norm(dev, dev->width, dev->height);
+ return 0;
+}
-/*
- dev->width=norm_maxw(dev);
- dev->height=norm_maxh(dev);
- dev->frame_size=dev->width*dev->height*2;
- dev->field_size=dev->frame_size>>1;
- dev->bytesperline=dev->width*2;
- dev->hscale=0;
- dev->vscale=0;
+static int vidioc_s_register(struct file *file, void *priv,
+ struct v4l2_register *reg)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ __le64 buf;
- em28xx_resolution_set(dev);
-*/
-/*
- em28xx_uninit_isoc(dev);
- em28xx_set_alternate(dev);
- em28xx_capture_start(dev, 1);
- em28xx_resolution_set(dev);
- em28xx_init_isoc(dev);
-*/
- em28xx_i2c_call_clients(dev, DECODER_SET_NORM,
- &tvnorms[i].mode);
- em28xx_i2c_call_clients(dev, VIDIOC_S_STD,
- &dev->tvnorm->id);
+ buf = cpu_to_le64(reg->val);
+
+ return em28xx_write_regs(dev, reg->reg, (char *)&buf,
+ em28xx_reg_len(reg->reg));
+}
+#endif
- up(&dev->lock);
- return 0;
- }
+static int vidioc_cropcap(struct file *file, void *priv,
+ struct v4l2_cropcap *cc)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+
+ if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ cc->bounds.left = 0;
+ cc->bounds.top = 0;
+ cc->bounds.width = dev->width;
+ cc->bounds.height = dev->height;
+ cc->defrect = cc->bounds;
+ cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
+ cc->pixelaspect.denominator = 59;
+
+ return 0;
+}
+
+static int vidioc_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+
+ if (unlikely(res_get(fh) < 0))
+ return -EBUSY;
+
+ return (videobuf_streamon(&fh->vb_vidq));
+}
+
+static int vidioc_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ if (type != fh->type)
+ return -EINVAL;
+
+ videobuf_streamoff(&fh->vb_vidq);
+ res_free(fh);
+
+ return 0;
+}
+
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+
+ strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
+ strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
+ strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
+
+ cap->version = EM28XX_VERSION_CODE;
+
+ cap->capabilities =
+ V4L2_CAP_SLICED_VBI_CAPTURE |
+ V4L2_CAP_VIDEO_CAPTURE |
+ V4L2_CAP_AUDIO |
+ V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
+
+ if (dev->tuner_type != TUNER_ABSENT)
+ cap->capabilities |= V4L2_CAP_TUNER;
+
+ return 0;
+}
+
+static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *fmtd)
+{
+ if (fmtd->index != 0)
+ return -EINVAL;
+
+ fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ strcpy(fmtd->description, "Packed YUY2");
+ fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
+ memset(fmtd->reserved, 0, sizeof(fmtd->reserved));
+
+ return 0;
+}
+
+/* Sliced VBI ioctls */
+static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ mutex_lock(&dev->lock);
+
+ f->fmt.sliced.service_set = 0;
+
+ em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f);
+
+ if (f->fmt.sliced.service_set == 0)
+ rc = -EINVAL;
- /* ------ input switching ---------- */
- case VIDIOC_ENUMINPUT:
- {
- struct v4l2_input *i = arg;
- unsigned int n;
- static const char *iname[] = {
- [EM28XX_VMUX_COMPOSITE1] = "Composite1",
- [EM28XX_VMUX_COMPOSITE2] = "Composite2",
- [EM28XX_VMUX_COMPOSITE3] = "Composite3",
- [EM28XX_VMUX_COMPOSITE4] = "Composite4",
- [EM28XX_VMUX_SVIDEO] = "S-Video",
- [EM28XX_VMUX_TELEVISION] = "Television",
- [EM28XX_VMUX_CABLE] = "Cable TV",
- [EM28XX_VMUX_DVB] = "DVB",
- [EM28XX_VMUX_DEBUG] = "for debug only",
- };
-
- n = i->index;
- if (n >= MAX_EM28XX_INPUT)
- return -EINVAL;
- if (0 == INPUT(n)->type)
- return -EINVAL;
- memset(i, 0, sizeof(*i));
- i->index = n;
- i->type = V4L2_INPUT_TYPE_CAMERA;
- strcpy(i->name, iname[INPUT(n)->type]);
- if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
- (EM28XX_VMUX_CABLE == INPUT(n)->type))
- i->type = V4L2_INPUT_TYPE_TUNER;
- for (n = 0; n < ARRAY_SIZE(tvnorms); n++)
- i->std |= tvnorms[n].id;
+ mutex_unlock(&dev->lock);
+ return rc;
+}
+
+static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ mutex_lock(&dev->lock);
+ em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f);
+ mutex_unlock(&dev->lock);
+
+ if (f->fmt.sliced.service_set == 0)
+ return -EINVAL;
+
+ return 0;
+}
+
+
+static int vidioc_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *rb)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ return (videobuf_reqbufs(&fh->vb_vidq, rb));
+}
+
+static int vidioc_querybuf(struct file *file, void *priv,
+ struct v4l2_buffer *b)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ return (videobuf_querybuf(&fh->vb_vidq, b));
+}
+
+static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ return (videobuf_qbuf(&fh->vb_vidq, b));
+}
+
+static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ return (videobuf_dqbuf(&fh->vb_vidq, b,
+ file->f_flags & O_NONBLOCK));
+}
+
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
+{
+ struct em28xx_fh *fh = priv;
+
+ return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
+}
+#endif
+
+
+/* ----------------------------------------------------------- */
+/* RADIO ESPECIFIC IOCTLS */
+/* ----------------------------------------------------------- */
+
+static int radio_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
+
+ strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
+ strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
+ strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
+
+ cap->version = EM28XX_VERSION_CODE;
+ cap->capabilities = V4L2_CAP_TUNER;
+ return 0;
+}
+
+static int radio_g_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *t)
+{
+ struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
+
+ if (unlikely(t->index > 0))
+ return -EINVAL;
+
+ strcpy(t->name, "Radio");
+ t->type = V4L2_TUNER_RADIO;
+
+ em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t);
+ return 0;
+}
+
+static int radio_enum_input(struct file *file, void *priv,
+ struct v4l2_input *i)
+{
+ if (i->index != 0)
+ return -EINVAL;
+ strcpy(i->name, "Radio");
+ i->type = V4L2_INPUT_TYPE_TUNER;
+
+ return 0;
+}
+
+static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
+{
+ if (unlikely(a->index))
+ return -EINVAL;
+
+ strcpy(a->name, "Radio");
+ return 0;
+}
+
+static int radio_s_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *t)
+{
+ struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
+
+ if (0 != t->index)
+ return -EINVAL;
+
+ em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t);
+
+ return 0;
+}
+
+static int radio_s_audio(struct file *file, void *fh,
+ struct v4l2_audio *a)
+{
+ return 0;
+}
+
+static int radio_s_input(struct file *file, void *fh, unsigned int i)
+{
+ return 0;
+}
+
+static int radio_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *qc)
+{
+ int i;
+
+ if (qc->id < V4L2_CID_BASE ||
+ qc->id >= V4L2_CID_LASTP1)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
+ if (qc->id && qc->id == em28xx_qctrl[i].id) {
+ memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
return 0;
}
+ }
- case VIDIOC_G_INPUT:
- {
- int *i = arg;
- *i = dev->ctl_input;
+ return -EINVAL;
+}
- return 0;
+/*
+ * em28xx_v4l2_open()
+ * inits the device and starts isoc transfer
+ */
+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;
+ struct em28xx_fh *fh;
+ enum v4l2_buf_type fh_type = 0;
+
+ 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;
}
-
- case VIDIOC_S_INPUT:
- {
- int *index = arg;
-
- if (*index >= MAX_EM28XX_INPUT)
- return -EINVAL;
- if (0 == INPUT(*index)->type)
- return -EINVAL;
-
- down(&dev->lock);
- video_mux(dev, *index);
- up(&dev->lock);
-
- return 0;
+ if (h->radio_dev &&
+ h->radio_dev->minor == minor) {
+ radio = 1;
+ dev = h;
}
+ }
+ if (NULL == dev)
+ return -ENODEV;
- case VIDIOC_G_AUDIO:
- {
- struct v4l2_audio *a = arg;
- unsigned int index = a->index;
-
- if (a->index > 1)
- return -EINVAL;
- memset(a, 0, sizeof(*a));
- index = dev->ctl_ainput;
-
- if (index == 0) {
- strcpy(a->name, "Television");
- } else {
- strcpy(a->name, "Line In");
- }
- a->capability = V4L2_AUDCAP_STEREO;
- a->index = index;
- return 0;
- }
+ em28xx_videodbg("open minor=%d type=%s users=%d\n",
+ minor, v4l2_type_names[fh_type], dev->users);
- case VIDIOC_S_AUDIO:
- {
- struct v4l2_audio *a = arg;
- if (a->index != dev->ctl_ainput)
- return -EINVAL;
- return 0;
- }
+ fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
+ if (!fh) {
+ em28xx_errdev("em28xx-video.c: Out of memory?!\n");
+ return -ENOMEM;
+ }
+ mutex_lock(&dev->lock);
+ fh->dev = dev;
+ fh->radio = radio;
+ fh->type = fh_type;
+ filp->private_data = fh;
- /* --- controls ---------------------------------------------- */
- case VIDIOC_QUERYCTRL:
- {
- struct v4l2_queryctrl *qc = arg;
- int i, id=qc->id;
-
- memset(qc,0,sizeof(*qc));
- qc->id=id;
-
- if (!dev->has_msp34xx) {
- for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
- if (qc->id && qc->id == em28xx_qctrl[i].id) {
- memcpy(qc, &(em28xx_qctrl[i]),
- sizeof(*qc));
- return 0;
- }
- }
- }
- if (dev->decoder == EM28XX_TVP5150) {
- em28xx_i2c_call_clients(dev,cmd,qc);
- if (qc->type)
- return 0;
- else
- return -EINVAL;
- }
- for (i = 0; i < ARRAY_SIZE(saa711x_qctrl); i++) {
- if (qc->id && qc->id == saa711x_qctrl[i].id) {
- memcpy(qc, &(saa711x_qctrl[i]),
- sizeof(*qc));
- return 0;
- }
- }
+ if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
+ dev->width = norm_maxw(dev);
+ dev->height = norm_maxh(dev);
+ dev->hscale = 0;
+ dev->vscale = 0;
- return -EINVAL;
- }
+ em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
+ em28xx_set_alternate(dev);
+ em28xx_resolution_set(dev);
- case VIDIOC_G_CTRL:
- {
- struct v4l2_control *ctrl = arg;
- int retval=-EINVAL;
-
- if (!dev->has_msp34xx)
- retval=em28xx_get_ctrl(dev, ctrl);
- if (retval==-EINVAL) {
- if (dev->decoder == EM28XX_TVP5150) {
- em28xx_i2c_call_clients(dev,cmd,arg);
- return 0;
- }
+ /* Needed, since GPIO might have disabled power of
+ some i2c device
+ */
+ em28xx_config_i2c(dev);
- return saa711x_get_ctrl(dev, ctrl);
- } else return retval;
- }
+ }
+ if (fh->radio) {
+ em28xx_videodbg("video_open: setting radio device\n");
+ em28xx_i2c_call_clients(dev, AUDC_SET_RADIO, NULL);
+ }
- case VIDIOC_S_CTRL:
- {
- struct v4l2_control *ctrl = arg;
- u8 i;
-
- if (!dev->has_msp34xx){
- for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
- if (ctrl->id == em28xx_qctrl[i].id) {
- if (ctrl->value <
- em28xx_qctrl[i].minimum
- || ctrl->value >
- em28xx_qctrl[i].maximum)
- return -ERANGE;
- return em28xx_set_ctrl(dev, ctrl);
- }
- }
- }
+ dev->users++;
- if (dev->decoder == EM28XX_TVP5150) {
- em28xx_i2c_call_clients(dev,cmd,arg);
- return 0;
- } else if (!dev->has_msp34xx) {
- for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
- if (ctrl->id == em28xx_qctrl[i].id) {
- if (ctrl->value <
- em28xx_qctrl[i].minimum
- || ctrl->value >
- em28xx_qctrl[i].maximum)
- return -ERANGE;
- return em28xx_set_ctrl(dev, ctrl);
- }
- }
- for (i = 0; i < ARRAY_SIZE(saa711x_qctrl); i++) {
- if (ctrl->id == saa711x_qctrl[i].id) {
- if (ctrl->value <
- saa711x_qctrl[i].minimum
- || ctrl->value >
- saa711x_qctrl[i].maximum)
- return -ERANGE;
- return saa711x_set_ctrl(dev, ctrl);
- }
- }
- }
+ videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
+ NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED,
+ sizeof(struct em28xx_buffer), fh);
- return -EINVAL;
- }
+ mutex_unlock(&dev->lock);
- /* --- tuner ioctls ------------------------------------------ */
- case VIDIOC_G_TUNER:
- {
- struct v4l2_tuner *t = arg;
- int status = 0;
-
- if (0 != t->index)
- return -EINVAL;
-
- memset(t, 0, sizeof(*t));
- strcpy(t->name, "Tuner");
- t->type = V4L2_TUNER_ANALOG_TV;
- t->capability = V4L2_TUNER_CAP_NORM;
- t->rangehigh = 0xffffffffUL; /* FIXME: set correct range */
-/* t->signal = 0xffff;*/
-/* em28xx_i2c_call_clients(dev,VIDIOC_G_TUNER,t);*/
- /* No way to get signal strength? */
- down(&dev->lock);
- em28xx_i2c_call_clients(dev, DECODER_GET_STATUS,
- &status);
- up(&dev->lock);
- t->signal =
- (status & DECODER_STATUS_GOOD) != 0 ? 0xffff : 0;
-
- em28xx_videodbg("VIDIO_G_TUNER: signal=%x, afc=%x\n", t->signal,
- t->afc);
- return 0;
- }
- case VIDIOC_S_TUNER:
- {
- struct v4l2_tuner *t = arg;
- int status = 0;
-
- if (0 != t->index)
- return -EINVAL;
- memset(t, 0, sizeof(*t));
- strcpy(t->name, "Tuner");
- t->type = V4L2_TUNER_ANALOG_TV;
- t->capability = V4L2_TUNER_CAP_NORM;
- t->rangehigh = 0xffffffffUL; /* FIXME: set correct range */
-/* t->signal = 0xffff; */
- /* No way to get signal strength? */
- down(&dev->lock);
- em28xx_i2c_call_clients(dev, DECODER_GET_STATUS,
- &status);
- up(&dev->lock);
- t->signal =
- (status & DECODER_STATUS_GOOD) != 0 ? 0xffff : 0;
-
- em28xx_videodbg("VIDIO_S_TUNER: signal=%x, afc=%x\n",
- t->signal, t->afc);
- return 0;
- }
- case VIDIOC_G_FREQUENCY:
- {
- struct v4l2_frequency *f = arg;
+ return errCode;
+}
- memset(f, 0, sizeof(*f));
- f->type = V4L2_TUNER_ANALOG_TV;
- f->frequency = dev->ctl_freq;
+/*
+ * em28xx_realease_resources()
+ * 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)
+{
- return 0;
- }
- case VIDIOC_S_FREQUENCY:
- {
- struct v4l2_frequency *f = arg;
+ /*FIXME: I2C IR should be disconnected */
- if (0 != f->tuner)
- return -EINVAL;
+ em28xx_info("V4L2 devices /dev/video%d and /dev/vbi%d deregistered\n",
+ dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN,
+ dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN);
+ list_del(&dev->devlist);
+ if (dev->sbutton_input_dev)
+ em28xx_deregister_snapshot_button(dev);
+ if (dev->radio_dev) {
+ if (-1 != dev->radio_dev->minor)
+ video_unregister_device(dev->radio_dev);
+ else
+ video_device_release(dev->radio_dev);
+ dev->radio_dev = NULL;
+ }
+ if (dev->vbi_dev) {
+ if (-1 != dev->vbi_dev->minor)
+ video_unregister_device(dev->vbi_dev);
+ else
+ video_device_release(dev->vbi_dev);
+ dev->vbi_dev = NULL;
+ }
+ if (dev->vdev) {
+ if (-1 != dev->vdev->minor)
+ video_unregister_device(dev->vdev);
+ else
+ video_device_release(dev->vdev);
+ dev->vdev = NULL;
+ }
+ em28xx_i2c_unregister(dev);
+ usb_put_dev(dev->udev);
- if (V4L2_TUNER_ANALOG_TV != f->type)
- return -EINVAL;
+ /* Mark device as unused */
+ em28xx_devused &= ~(1<<dev->devno);
+}
- down(&dev->lock);
- dev->ctl_freq = f->frequency;
- em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f);
- up(&dev->lock);
- return 0;
- }
+/*
+ * em28xx_v4l2_close()
+ * stops streaming and deallocates all resources allocated by the v4l2
+ * calls and ioctls
+ */
+static int em28xx_v4l2_close(struct inode *inode, struct file *filp)
+{
+ struct em28xx_fh *fh = filp->private_data;
+ struct em28xx *dev = fh->dev;
+ int errCode;
- case VIDIOC_CROPCAP:
- {
- struct v4l2_cropcap *cc = arg;
-
- if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
- cc->bounds.left = 0;
- cc->bounds.top = 0;
- cc->bounds.width = dev->width;
- cc->bounds.height = dev->height;
- cc->defrect = cc->bounds;
- cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
- cc->pixelaspect.denominator = 59;
- return 0;
- }
- case VIDIOC_STREAMON:
- {
- int *type = arg;
+ em28xx_videodbg("users=%d\n", dev->users);
- if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
- || dev->io != IO_MMAP)
- return -EINVAL;
- if (list_empty(&dev->inqueue))
- return -EINVAL;
+ if (res_check(fh))
+ res_free(fh);
- dev->stream = STREAM_ON; /* FIXME: Start video capture here? */
+ mutex_lock(&dev->lock);
- em28xx_videodbg("VIDIOC_STREAMON: starting stream\n");
+ if (dev->users == 1) {
+ videobuf_stop(&fh->vb_vidq);
+ videobuf_mmap_free(&fh->vb_vidq);
+ /* the device is already disconnect,
+ free the remaining resources */
+ if (dev->state & DEV_DISCONNECTED) {
+ em28xx_release_resources(dev);
+ mutex_unlock(&dev->lock);
+ kfree(dev);
return 0;
}
- case VIDIOC_STREAMOFF:
- {
- int *type = arg;
- int ret;
-
- if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
- || dev->io != IO_MMAP)
- return -EINVAL;
-
- if (dev->stream == STREAM_ON) {
- em28xx_videodbg ("VIDIOC_STREAMOFF: interrupting stream\n");
- if ((ret = em28xx_stream_interrupt(dev)))
- return ret;
- }
- em28xx_empty_framequeues(dev);
- return 0;
+ /* do this before setting alternate! */
+ em28xx_uninit_isoc(dev);
+ em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
+
+ /* set alternate 0 */
+ dev->alt = 0;
+ em28xx_videodbg("setting alternate 0\n");
+ errCode = usb_set_interface(dev->udev, 0, 0);
+ if (errCode < 0) {
+ em28xx_errdev("cannot change alternate number to "
+ "0 (error=%i)\n", errCode);
}
- default:
- return v4l_compat_translate_ioctl(inode, filp, cmd, arg,
- driver_ioctl);
}
+ kfree(fh);
+ dev->users--;
+ wake_up_interruptible_nr(&dev->open, 1);
+ mutex_unlock(&dev->lock);
return 0;
}
/*
- * em28xx_v4l2_do_ioctl()
- * This function is _not_ called directly, but from
- * em28xx_v4l2_ioctl. Userspace
- * copying is done already, arg is a kernel pointer.
+ * em28xx_v4l2_read()
+ * will allocate buffers when called for the first time
*/
-static int em28xx_video_do_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, void *arg)
+static ssize_t
+em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
{
- struct em28xx *dev = filp->private_data;
+ struct em28xx_fh *fh = filp->private_data;
+ struct em28xx *dev = fh->dev;
+ int rc;
- if (!dev)
- return -ENODEV;
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
- if (video_debug > 1)
- v4l_print_ioctl(dev->name,cmd);
-
- switch (cmd) {
-
- /* --- capabilities ------------------------------------------ */
- case VIDIOC_QUERYCAP:
- {
- struct v4l2_capability *cap = arg;
-
- memset(cap, 0, sizeof(*cap));
- strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
- strlcpy(cap->card, em28xx_boards[dev->model].name,
- sizeof(cap->card));
- strlcpy(cap->bus_info, dev->udev->dev.bus_id,
- sizeof(cap->bus_info));
- cap->version = EM28XX_VERSION_CODE;
- cap->capabilities =
- V4L2_CAP_SLICED_VBI_CAPTURE |
- V4L2_CAP_VIDEO_CAPTURE |
- V4L2_CAP_AUDIO |
- V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
- if (dev->has_tuner)
- cap->capabilities |= V4L2_CAP_TUNER;
- return 0;
- }
+ /* FIXME: read() is not prepared to allow changing the video
+ resolution while streaming. Seems a bug at em28xx_set_fmt
+ */
- /* --- capture ioctls ---------------------------------------- */
- case VIDIOC_ENUM_FMT:
- {
- struct v4l2_fmtdesc *fmtd = arg;
-
- if (fmtd->index != 0)
- return -EINVAL;
- memset(fmtd, 0, sizeof(*fmtd));
- fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- strcpy(fmtd->description, "Packed YUY2");
- fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
- memset(fmtd->reserved, 0, sizeof(fmtd->reserved));
- return 0;
- }
+ if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ if (unlikely(res_get(fh)))
+ return -EBUSY;
- case VIDIOC_G_FMT:
- return em28xx_get_fmt(dev, (struct v4l2_format *) arg);
-
- case VIDIOC_TRY_FMT:
- case VIDIOC_S_FMT:
- {
- struct v4l2_format *format = arg;
- u32 i;
- int ret = 0;
- int width = format->fmt.pix.width;
- int height = format->fmt.pix.height;
- unsigned int hscale, vscale;
- unsigned int maxh, maxw;
-
- maxw = norm_maxw(dev);
- maxh = norm_maxh(dev);
-
-/* int both_fields; */
-
- em28xx_videodbg("%s: type=%s\n",
- cmd ==
- VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
- "VIDIOC_S_FMT",
- format->type ==
- V4L2_BUF_TYPE_VIDEO_CAPTURE ?
- "V4L2_BUF_TYPE_VIDEO_CAPTURE" : format->type ==
- V4L2_BUF_TYPE_VBI_CAPTURE ?
- "V4L2_BUF_TYPE_VBI_CAPTURE " :
- "not supported");
-
- if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
-
- em28xx_videodbg("%s: requested %dx%d\n",
- cmd ==
- VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
- "VIDIOC_S_FMT", format->fmt.pix.width,
- format->fmt.pix.height);
-
- /* FIXME: Move some code away from here */
- /* width must even because of the YUYV format */
- /* height must be even because of interlacing */
- height &= 0xfffe;
- width &= 0xfffe;
-
- if (height < 32)
- height = 32;
- if (height > maxh)
- height = maxh;
- if (width < 48)
- width = 48;
- if (width > maxw)
- width = maxw;
-
- if(dev->is_em2800){
- /* the em2800 can only scale down to 50% */
- if(height % (maxh / 2))
- height=maxh;
- if(width % (maxw / 2))
- width=maxw;
- /* according to empiatech support */
- /* the MaxPacketSize is to small to support */
- /* framesizes larger than 640x480 @ 30 fps */
- /* or 640x576 @ 25 fps. As this would cut */
- /* of a part of the image we prefer */
- /* 360x576 or 360x480 for now */
- if(width == maxw && height == maxh)
- width /= 2;
- }
+ return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
+ filp->f_flags & O_NONBLOCK);
+ }
+ return 0;
+}
- if ((hscale =
- (((unsigned long)maxw) << 12) / width - 4096L) >=
- 0x4000)
- hscale = 0x3fff;
- width =
- (((unsigned long)maxw) << 12) / (hscale + 4096L);
-
- if ((vscale =
- (((unsigned long)maxh) << 12) / height - 4096L) >=
- 0x4000)
- vscale = 0x3fff;
- height =
- (((unsigned long)maxh) << 12) / (vscale + 4096L);
-
- format->fmt.pix.width = width;
- format->fmt.pix.height = height;
- format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
- format->fmt.pix.bytesperline = width * 2;
- format->fmt.pix.sizeimage = width * 2 * height;
- format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
- format->fmt.pix.field = V4L2_FIELD_INTERLACED;
-
- em28xx_videodbg("%s: returned %dx%d (%d, %d)\n",
- cmd ==
- VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
- "VIDIOC_S_FMT", format->fmt.pix.width,
- format->fmt.pix.height, hscale, vscale);
-
- if (cmd == VIDIOC_TRY_FMT)
- return 0;
+/*
+ * em28xx_v4l2_poll()
+ * will allocate buffers when called for the first time
+ */
+static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait)
+{
+ struct em28xx_fh *fh = filp->private_data;
+ struct em28xx *dev = fh->dev;
+ int rc;
- for (i = 0; i < dev->num_frames; i++)
- if (dev->frame[i].vma_use_count) {
- em28xx_videodbg("VIDIOC_S_FMT failed. "
- "Unmap the buffers first.\n");
- return -EINVAL;
- }
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
- /* stop io in case it is already in progress */
- if (dev->stream == STREAM_ON) {
- em28xx_videodbg("VIDIOC_SET_FMT: interupting stream\n");
- if ((ret = em28xx_stream_interrupt(dev)))
- return ret;
- }
+ if (unlikely(res_get(fh) < 0))
+ return POLLERR;
- em28xx_release_buffers(dev);
- dev->io = IO_NONE;
-
- /* set new image size */
- dev->width = width;
- dev->height = height;
- dev->frame_size = dev->width * dev->height * 2;
- dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
- dev->bytesperline = dev->width * 2;
- dev->hscale = hscale;
- dev->vscale = vscale;
-/* dev->both_fileds = both_fileds; */
- em28xx_uninit_isoc(dev);
- em28xx_set_alternate(dev);
- em28xx_capture_start(dev, 1);
- em28xx_resolution_set(dev);
- em28xx_init_isoc(dev);
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
+ return POLLERR;
- return 0;
- }
+ return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
+}
- /* --- streaming capture ------------------------------------- */
- case VIDIOC_REQBUFS:
- {
- struct v4l2_requestbuffers *rb = arg;
- u32 i;
- int ret;
-
- if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
- rb->memory != V4L2_MEMORY_MMAP)
- return -EINVAL;
-
- if (dev->io == IO_READ) {
- em28xx_videodbg ("method is set to read;"
- " close and open the device again to"
- " choose the mmap I/O method\n");
- return -EINVAL;
- }
+/*
+ * em28xx_v4l2_mmap()
+ */
+static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+ struct em28xx_fh *fh = filp->private_data;
+ struct em28xx *dev = fh->dev;
+ int rc;
- for (i = 0; i < dev->num_frames; i++)
- if (dev->frame[i].vma_use_count) {
- em28xx_videodbg ("VIDIOC_REQBUFS failed; previous buffers are still mapped\n");
- return -EINVAL;
- }
+ if (unlikely(res_get(fh) < 0))
+ return -EBUSY;
- if (dev->stream == STREAM_ON) {
- em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n");
- if ((ret = em28xx_stream_interrupt(dev)))
- return ret;
- }
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
- em28xx_empty_framequeues(dev);
+ em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
+ (unsigned long)vma->vm_start,
+ (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
+ rc);
- em28xx_release_buffers(dev);
- if (rb->count)
- rb->count =
- em28xx_request_buffers(dev, rb->count);
+ return rc;
+}
- dev->frame_current = NULL;
+static const struct file_operations em28xx_v4l_fops = {
+ .owner = THIS_MODULE,
+ .open = em28xx_v4l2_open,
+ .release = em28xx_v4l2_close,
+ .read = em28xx_v4l2_read,
+ .poll = em28xx_v4l2_poll,
+ .mmap = em28xx_v4l2_mmap,
+ .ioctl = video_ioctl2,
+ .llseek = no_llseek,
+ .compat_ioctl = v4l_compat_ioctl32,
+};
- em28xx_videodbg ("VIDIOC_REQBUFS: setting io method to mmap: num bufs %i\n",
- rb->count);
- dev->io = rb->count ? IO_MMAP : IO_NONE;
- return 0;
- }
+static const struct v4l2_ioctl_ops video_ioctl_ops = {
+ .vidioc_querycap = vidioc_querycap,
+ .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
+ .vidioc_g_audio = vidioc_g_audio,
+ .vidioc_s_audio = vidioc_s_audio,
+ .vidioc_cropcap = vidioc_cropcap,
+
+ .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
+ .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
+ .vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
+
+ .vidioc_reqbufs = vidioc_reqbufs,
+ .vidioc_querybuf = vidioc_querybuf,
+ .vidioc_qbuf = vidioc_qbuf,
+ .vidioc_dqbuf = vidioc_dqbuf,
+ .vidioc_s_std = vidioc_s_std,
+ .vidioc_enum_input = vidioc_enum_input,
+ .vidioc_g_input = vidioc_g_input,
+ .vidioc_s_input = vidioc_s_input,
+ .vidioc_queryctrl = vidioc_queryctrl,
+ .vidioc_g_ctrl = vidioc_g_ctrl,
+ .vidioc_s_ctrl = vidioc_s_ctrl,
+ .vidioc_streamon = vidioc_streamon,
+ .vidioc_streamoff = vidioc_streamoff,
+ .vidioc_g_tuner = vidioc_g_tuner,
+ .vidioc_s_tuner = vidioc_s_tuner,
+ .vidioc_g_frequency = vidioc_g_frequency,
+ .vidioc_s_frequency = vidioc_s_frequency,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .vidioc_g_register = vidioc_g_register,
+ .vidioc_s_register = vidioc_s_register,
+#endif
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+ .vidiocgmbuf = vidiocgmbuf,
+#endif
+};
- case VIDIOC_QUERYBUF:
- {
- struct v4l2_buffer *b = arg;
+static const struct video_device em28xx_video_template = {
+ .fops = &em28xx_v4l_fops,
+ .release = video_device_release,
+ .ioctl_ops = &video_ioctl_ops,
- if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
- b->index >= dev->num_frames || dev->io != IO_MMAP)
- return -EINVAL;
+ .minor = -1,
- memcpy(b, &dev->frame[b->index].buf, sizeof(*b));
+ .tvnorms = V4L2_STD_ALL,
+ .current_norm = V4L2_STD_PAL,
+};
- if (dev->frame[b->index].vma_use_count) {
- b->flags |= V4L2_BUF_FLAG_MAPPED;
- }
- if (dev->frame[b->index].state == F_DONE)
- b->flags |= V4L2_BUF_FLAG_DONE;
- else if (dev->frame[b->index].state != F_UNUSED)
- b->flags |= V4L2_BUF_FLAG_QUEUED;
- return 0;
- }
- case VIDIOC_QBUF:
- {
- struct v4l2_buffer *b = arg;
- unsigned long lock_flags;
-
- if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
- b->index >= dev->num_frames || dev->io != IO_MMAP) {
- return -EINVAL;
- }
+static const struct file_operations radio_fops = {
+ .owner = THIS_MODULE,
+ .open = em28xx_v4l2_open,
+ .release = em28xx_v4l2_close,
+ .ioctl = video_ioctl2,
+ .compat_ioctl = v4l_compat_ioctl32,
+ .llseek = no_llseek,
+};
- if (dev->frame[b->index].state != F_UNUSED) {
- return -EAGAIN;
- }
- dev->frame[b->index].state = F_QUEUED;
+static const struct v4l2_ioctl_ops radio_ioctl_ops = {
+ .vidioc_querycap = radio_querycap,
+ .vidioc_g_tuner = radio_g_tuner,
+ .vidioc_enum_input = radio_enum_input,
+ .vidioc_g_audio = radio_g_audio,
+ .vidioc_s_tuner = radio_s_tuner,
+ .vidioc_s_audio = radio_s_audio,
+ .vidioc_s_input = radio_s_input,
+ .vidioc_queryctrl = radio_queryctrl,
+ .vidioc_g_ctrl = vidioc_g_ctrl,
+ .vidioc_s_ctrl = vidioc_s_ctrl,
+ .vidioc_g_frequency = vidioc_g_frequency,
+ .vidioc_s_frequency = vidioc_s_frequency,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .vidioc_g_register = vidioc_g_register,
+ .vidioc_s_register = vidioc_s_register,
+#endif
+};
- /* add frame to fifo */
- spin_lock_irqsave(&dev->queue_lock, lock_flags);
- list_add_tail(&dev->frame[b->index].frame,
- &dev->inqueue);
- spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
+static struct video_device em28xx_radio_template = {
+ .name = "em28xx-radio",
+ .type = VID_TYPE_TUNER,
+ .fops = &radio_fops,
+ .ioctl_ops = &radio_ioctl_ops,
+ .minor = -1,
+};
- return 0;
- }
- case VIDIOC_DQBUF:
- {
- struct v4l2_buffer *b = arg;
- struct em28xx_frame_t *f;
- unsigned long lock_flags;
- int ret = 0;
-
- if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
- || dev->io != IO_MMAP)
- return -EINVAL;
-
- if (list_empty(&dev->outqueue)) {
- if (dev->stream == STREAM_OFF)
- return -EINVAL;
- if (filp->f_flags & O_NONBLOCK)
- return -EAGAIN;
- ret = wait_event_interruptible
- (dev->wait_frame,
- (!list_empty(&dev->outqueue)) ||
- (dev->state & DEV_DISCONNECTED));
- if (ret)
- return ret;
- if (dev->state & DEV_DISCONNECTED)
- return -ENODEV;
- }
+/******************************** usb interface ******************************/
- spin_lock_irqsave(&dev->queue_lock, lock_flags);
- f = list_entry(dev->outqueue.next,
- struct em28xx_frame_t, frame);
- list_del(dev->outqueue.next);
- spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
- f->state = F_UNUSED;
- memcpy(b, &f->buf, sizeof(*b));
+static LIST_HEAD(em28xx_extension_devlist);
+static DEFINE_MUTEX(em28xx_extension_devlist_lock);
- if (f->vma_use_count)
- b->flags |= V4L2_BUF_FLAG_MAPPED;
+int em28xx_register_extension(struct em28xx_ops *ops)
+{
+ struct em28xx *dev = NULL;
- return 0;
- }
- default:
- return em28xx_do_ioctl(inode, filp, dev, cmd, arg,
- em28xx_video_do_ioctl);
+ 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);
return 0;
}
+EXPORT_SYMBOL(em28xx_register_extension);
-/*
- * em28xx_v4l2_ioctl()
- * handle v4l2 ioctl the main action happens in em28xx_v4l2_do_ioctl()
- */
-static int em28xx_v4l2_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+void em28xx_unregister_extension(struct em28xx_ops *ops)
{
- int ret = 0;
- struct em28xx *dev = filp->private_data;
-
- if (down_interruptible(&dev->fileop_lock))
- return -ERESTARTSYS;
-
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_errdev("v4l2 ioctl: device not present\n");
- up(&dev->fileop_lock);
- return -ENODEV;
- }
+ struct em28xx *dev = NULL;
- if (dev->state & DEV_MISCONFIGURED) {
- em28xx_errdev
- ("v4l2 ioctl: device is misconfigured; close and open it again\n");
- up(&dev->fileop_lock);
- return -EIO;
+ list_for_each_entry(dev, &em28xx_devlist, devlist) {
+ if (dev)
+ ops->fini(dev);
}
- ret = video_usercopy(inode, filp, cmd, arg, em28xx_video_do_ioctl);
-
- up(&dev->fileop_lock);
-
- return ret;
+ 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);
}
+EXPORT_SYMBOL(em28xx_unregister_extension);
-static struct file_operations em28xx_v4l_fops = {
- .owner = THIS_MODULE,
- .open = em28xx_v4l2_open,
- .release = em28xx_v4l2_close,
- .ioctl = em28xx_v4l2_ioctl,
- .read = em28xx_v4l2_read,
- .poll = em28xx_v4l2_poll,
- .mmap = em28xx_v4l2_mmap,
- .llseek = no_llseek,
- .compat_ioctl = v4l_compat_ioctl32,
-
-};
+static struct video_device *em28xx_vdev_init(struct em28xx *dev,
+ const struct video_device *template,
+ const int type,
+ const char *type_name)
+{
+ struct video_device *vfd;
+
+ vfd = video_device_alloc();
+ if (NULL == vfd)
+ return NULL;
+ *vfd = *template;
+ vfd->minor = -1;
+ vfd->parent = &dev->udev->dev;
+ vfd->release = video_device_release;
+ vfd->type = type;
+ vfd->debug = video_debug;
+
+ snprintf(vfd->name, sizeof(vfd->name), "%s %s",
+ dev->name, type_name);
+
+ return vfd;
+}
-/******************************** usb interface *****************************************/
/*
* 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, int model)
+ int minor)
{
+ struct em28xx_ops *ops = NULL;
struct em28xx *dev = *devhandle;
int retval = -ENOMEM;
- int errCode, i;
+ int errCode;
unsigned int maxh, maxw;
dev->udev = udev;
- dev->model = model;
- init_MUTEX(&dev->lock);
+ mutex_init(&dev->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->is_em2800 = em28xx_boards[model].is_em2800;
- dev->has_tuner = em28xx_boards[model].has_tuner;
- dev->has_msp34xx = em28xx_boards[model].has_msp34xx;
- dev->tda9887_conf = em28xx_boards[model].tda9887_conf;
- dev->decoder = em28xx_boards[model].decoder;
-
- if (tuner >= 0)
- dev->tuner_type = tuner;
- else
- dev->tuner_type = em28xx_boards[model].tuner_type;
-
- dev->video_inputs = em28xx_boards[model].vchannels;
-
- for (i = 0; i < TVNORMS; i++)
- if (em28xx_boards[model].norm == tvnorms[i].mode)
- break;
- if (i == TVNORMS)
- i = 0;
-
- dev->tvnorm = &tvnorms[i]; /* set default norm */
-
- em28xx_videodbg("tvnorm=%s\n", dev->tvnorm->name);
-
- maxw = norm_maxw(dev);
- maxh = norm_maxh(dev);
+ dev->is_em2800 = em28xx_boards[dev->model].is_em2800;
- /* set default image size */
- dev->width = maxw;
- dev->height = maxh;
- dev->interlaced = EM28XX_INTERLACED_DEFAULT;
- dev->field_size = dev->width * dev->height;
- dev->frame_size =
- dev->interlaced ? dev->field_size << 1 : dev->field_size;
- dev->bytesperline = dev->width * 2;
- dev->hscale = 0;
- dev->vscale = 0;
- dev->ctl_input = 2;
+ em28xx_pre_card_setup(dev);
- /* setup video picture settings for saa7113h */
- memset(&dev->vpic, 0, sizeof(dev->vpic));
- dev->vpic.colour = 128 << 8;
- dev->vpic.hue = 128 << 8;
- dev->vpic.brightness = 128 << 8;
- dev->vpic.contrast = 192 << 8;
- dev->vpic.whiteness = 128 << 8; /* This one isn't used */
- dev->vpic.depth = 16;
- dev->vpic.palette = VIDEO_PALETTE_YUV422;
-
-#ifdef CONFIG_MODULES
- /* request some modules */
- if (dev->decoder == EM28XX_SAA7113 || dev->decoder == EM28XX_SAA7114)
- request_module("saa711x");
- if (dev->decoder == EM28XX_TVP5150)
- request_module("tvp5150");
- if (dev->has_tuner)
- request_module("tuner");
- if (dev->tda9887_conf)
- request_module("tda9887");
-#endif
errCode = em28xx_config(dev);
if (errCode) {
em28xx_errdev("error configuring device\n");
+ em28xx_devused &= ~(1<<dev->devno);
kfree(dev);
- em28xx_devused&=~(1<<dev->devno);
return -ENOMEM;
}
- down(&dev->lock);
/* register i2c bus */
em28xx_i2c_register(dev);
/* Do board specific init and eeprom reading */
em28xx_card_setup(dev);
+ /* Configure audio */
+ em28xx_audio_analog_set(dev);
+
/* configure the device */
em28xx_config_i2c(dev);
- up(&dev->lock);
+ /* 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);
-#ifdef CONFIG_MODULES
- if (dev->has_msp34xx)
- request_module("msp3400");
-#endif
- /* allocate and fill v4l2 device struct */
- dev->vdev = video_device_alloc();
- if (NULL == dev->vdev) {
- em28xx_errdev("cannot allocate video_device.\n");
- kfree(dev);
- em28xx_devused&=~(1<<dev->devno);
- return -ENOMEM;
- }
+ list_add_tail(&dev->devlist, &em28xx_devlist);
- dev->vbi_dev = video_device_alloc();
- if (NULL == dev->vbi_dev) {
+ /* allocate and fill video video_device struct */
+ dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template,
+ VID_TYPE_CAPTURE, "video");
+ if (NULL == dev->vdev) {
em28xx_errdev("cannot allocate video_device.\n");
- kfree(dev->vdev);
- kfree(dev);
- em28xx_devused&=~(1<<dev->devno);
- return -ENOMEM;
+ goto fail_unreg;
}
-
- /* Fills VBI device info */
- dev->vbi_dev->type = VFL_TYPE_VBI;
- dev->vbi_dev->hardware = 0;
- dev->vbi_dev->fops = &em28xx_v4l_fops;
- dev->vbi_dev->minor = -1;
- dev->vbi_dev->dev = &dev->udev->dev;
- dev->vbi_dev->release = video_device_release;
- snprintf(dev->vbi_dev->name, sizeof(dev->vbi_dev->name), "%s#%d %s",
- "em28xx",dev->devno,"vbi");
-
- /* Fills CAPTURE device info */
- dev->vdev->type = VID_TYPE_CAPTURE;
- if (dev->has_tuner)
+ if (dev->tuner_type != TUNER_ABSENT)
dev->vdev->type |= VID_TYPE_TUNER;
- dev->vdev->hardware = 0;
- dev->vdev->fops = &em28xx_v4l_fops;
- dev->vdev->minor = -1;
- dev->vdev->dev = &dev->udev->dev;
- dev->vdev->release = video_device_release;
- snprintf(dev->vdev->name, sizeof(dev->vbi_dev->name), "%s#%d %s",
- "em28xx",dev->devno,"video");
-
- list_add_tail(&dev->devlist,&em28xx_devlist);
-
- /* register v4l2 device */
- down(&dev->lock);
- if ((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
- video_nr[dev->devno]))) {
+
+ /* register v4l2 video video_device */
+ retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
+ video_nr[dev->devno]);
+ if (retval) {
em28xx_errdev("unable to register video device (error=%i).\n",
retval);
- up(&dev->lock);
- list_del(&dev->devlist);
- video_device_release(dev->vdev);
- kfree(dev);
- em28xx_devused&=~(1<<dev->devno);
- return -ENODEV;
+ goto fail_unreg;
}
+ /* Allocate and fill vbi video_device struct */
+ dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
+ VFL_TYPE_VBI, "vbi");
+ /* register v4l2 vbi video_device */
if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
vbi_nr[dev->devno]) < 0) {
- printk("unable to register vbi device\n");
- up(&dev->lock);
- list_del(&dev->devlist);
- video_device_release(dev->vbi_dev);
- video_device_release(dev->vdev);
- kfree(dev);
- em28xx_devused&=~(1<<dev->devno);
- return -ENODEV;
- } else {
- printk("registered VBI\n");
+ em28xx_errdev("unable to register vbi device\n");
+ retval = -ENODEV;
+ goto fail_unreg;
}
+ if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
+ dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
+ VFL_TYPE_RADIO, "radio");
+ if (NULL == dev->radio_dev) {
+ em28xx_errdev("cannot allocate video_device.\n");
+ goto fail_unreg;
+ }
+ retval = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
+ radio_nr[dev->devno]);
+ if (retval < 0) {
+ em28xx_errdev("can't register radio device\n");
+ goto fail_unreg;
+ }
+ em28xx_info("Registered radio device as /dev/radio%d\n",
+ dev->radio_dev->minor & 0x1f);
+ }
+
+ /* init video dma queues */
+ INIT_LIST_HEAD(&dev->vidq.active);
+ INIT_LIST_HEAD(&dev->vidq.queued);
+
+
if (dev->has_msp34xx) {
/* Send a reset to other chips via gpio */
em28xx_write_regs_req(dev, 0x00, 0x08, "\xf7", 1);
- udelay(2500);
+ msleep(3);
em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1);
- udelay(2500);
-
+ msleep(3);
}
- video_mux(dev, 0);
- up(&dev->lock);
+ video_mux(dev, 0);
em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN,
dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN);
+ 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);
+
return 0;
+
+fail_unreg:
+ em28xx_release_resources(dev);
+ mutex_unlock(&dev->lock);
+ kfree(dev);
+ 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
+ request_module("em28xx-alsa");
+
+ if (dev->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()
struct usb_interface *uif;
struct em28xx *dev = NULL;
int retval = -ENODEV;
- int model,i,nr,ifnum;
+ int i, nr, ifnum;
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;
+ 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);
endpoint = &interface->cur_altsetting->endpoint[1].desc;
- /* check if the the device has the iso in endpoint at the correct place */
+ /* check if the device has the iso in endpoint at the correct place */
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;
}
- model=id->driver_info;
-
- if (nr > EM28XX_MAXBOARDS) {
- printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS);
- em28xx_devused&=~(1<<nr);
+ if (nr >= EM28XX_MAXBOARDS) {
+ 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;
}
snprintf(dev->name, 29, "em28xx #%d", nr);
- dev->devno=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;
+ }
+ }
+
+ printk(KERN_INFO DRIVER_NAME " %s usb audio class\n",
+ dev->has_audio_class ? "Has" : "Doesn't have");
/* 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))
- model=card[nr];
-
- if ((model==EM2800_BOARD_UNKNOWN)||(model==EM2820_BOARD_UNKNOWN)) {
- em28xx_errdev( "Your board has no eeprom inside it and thus can't\n"
- "%s: be autodetected. Please pass card=<n> insmod option to\n"
- "%s: workaround that. Redirect complaints to the vendor of\n"
- "%s: the TV card. Generic type will be used."
- "%s: Best regards,\n"
- "%s: -- tux\n",
- dev->name,dev->name,dev->name,dev->name,dev->name);
- em28xx_errdev("%s: Here is a list of valid choices for the card=<n> insmod option:\n",
- dev->name);
- for (i = 0; i < em28xx_bcount; i++) {
- em28xx_errdev(" card=%d -> %s\n", i,
- em28xx_boards[i].name);
- }
- }
+ if ((card[nr] >= 0) && (card[nr] < em28xx_bcount))
+ dev->model = card[nr];
/* allocate device struct */
- retval = em28xx_init_dev(&dev, udev, nr, model);
+ retval = em28xx_init_dev(&dev, udev, nr);
if (retval)
return retval;
- em28xx_info("Found %s\n", em28xx_boards[model].name);
+ em28xx_info("Found %s\n", em28xx_boards[dev->model].name);
/* save our data pointer in this interface device */
usb_set_intfdata(interface, dev);
+
+ request_modules(dev);
+
return 0;
}
*/
static void em28xx_usb_disconnect(struct usb_interface *interface)
{
- struct em28xx *dev = usb_get_intfdata(interface);
+ struct em28xx *dev;
+ struct em28xx_ops *ops = NULL;
+
+ dev = usb_get_intfdata(interface);
usb_set_intfdata(interface, NULL);
if (!dev)
return;
- down_write(&em28xx_disconnect);
-
- down(&dev->lock);
-
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) {
dev->state |= DEV_DISCONNECTED;
em28xx_release_resources(dev);
}
+ mutex_unlock(&dev->lock);
- up(&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);
}
-
- up_write(&em28xx_disconnect);
}
static struct usb_driver em28xx_usb_driver = {
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff