diff options
Diffstat (limited to 'drivers/media/usb/tm6000/tm6000-video.c')
| -rw-r--r-- | drivers/media/usb/tm6000/tm6000-video.c | 1707 |
1 files changed, 1707 insertions, 0 deletions
diff --git a/drivers/media/usb/tm6000/tm6000-video.c b/drivers/media/usb/tm6000/tm6000-video.c new file mode 100644 index 000000000..01071e6cd --- /dev/null +++ b/drivers/media/usb/tm6000/tm6000-video.c @@ -0,0 +1,1707 @@ +// SPDX-License-Identifier: GPL-2.0 +// tm6000-video.c - driver for TM5600/TM6000/TM6010 USB video capture devices +// +// Copyright (c) 2006-2007 Mauro Carvalho Chehab <mchehab@kernel.org> +// +// Copyright (c) 2007 Michel Ludwig <michel.ludwig@gmail.com> +// - Fixed module load/unload + +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/fs.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/mm.h> +#include <linux/ioport.h> +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/random.h> +#include <linux/usb.h> +#include <linux/videodev2.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-event.h> +#include <media/tuner.h> +#include <linux/interrupt.h> +#include <linux/kthread.h> +#include <linux/highmem.h> +#include <linux/freezer.h> + +#include "tm6000-regs.h" +#include "tm6000.h" + +#define BUFFER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */ + +/* Limits minimum and default number of buffers */ +#define TM6000_MIN_BUF 4 +#define TM6000_DEF_BUF 8 + +#define TM6000_NUM_URB_BUF 8 + +#define TM6000_MAX_ISO_PACKETS 46 /* Max number of ISO packets */ + +/* Declare static vars that will be used as parameters */ +static unsigned int vid_limit = 16; /* Video memory limit, in Mb */ +static int video_nr = -1; /* /dev/videoN, -1 for autodetect */ +static int radio_nr = -1; /* /dev/radioN, -1 for autodetect */ +static bool keep_urb; /* keep urb buffers allocated */ + +/* Debug level */ +int tm6000_debug; +EXPORT_SYMBOL_GPL(tm6000_debug); + +static struct tm6000_fmt format[] = { + { + .fourcc = V4L2_PIX_FMT_YUYV, + .depth = 16, + }, { + .fourcc = V4L2_PIX_FMT_UYVY, + .depth = 16, + }, { + .fourcc = V4L2_PIX_FMT_TM6000, + .depth = 16, + } +}; + +/* ------------------------------------------------------------------ + * DMA and thread functions + * ------------------------------------------------------------------ + */ + +#define norm_maxw(a) 720 +#define norm_maxh(a) 576 + +#define norm_minw(a) norm_maxw(a) +#define norm_minh(a) norm_maxh(a) + +/* + * video-buf generic routine to get the next available buffer + */ +static inline void get_next_buf(struct tm6000_dmaqueue *dma_q, + struct tm6000_buffer **buf) +{ + struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq); + + if (list_empty(&dma_q->active)) { + dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n"); + *buf = NULL; + return; + } + + *buf = list_entry(dma_q->active.next, + struct tm6000_buffer, vb.queue); +} + +/* + * Announces that a buffer were filled and request the next + */ +static inline void buffer_filled(struct tm6000_core *dev, + struct tm6000_dmaqueue *dma_q, + struct tm6000_buffer *buf) +{ + /* Advice that buffer was filled */ + dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i); + buf->vb.state = VIDEOBUF_DONE; + buf->vb.field_count++; + buf->vb.ts = ktime_get_ns(); + + list_del(&buf->vb.queue); + wake_up(&buf->vb.done); +} + +/* + * Identify the tm5600/6000 buffer header type and properly handles + */ +static int copy_streams(u8 *data, unsigned long len, + struct urb *urb) +{ + struct tm6000_dmaqueue *dma_q = urb->context; + struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq); + u8 *ptr = data, *endp = data+len; + unsigned long header = 0; + int rc = 0; + unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0; + struct tm6000_buffer *vbuf = NULL; + char *voutp = NULL; + unsigned int linewidth; + + if (!dev->radio) { + /* get video buffer */ + get_next_buf(dma_q, &vbuf); + + if (!vbuf) + return rc; + voutp = videobuf_to_vmalloc(&vbuf->vb); + + if (!voutp) + return 0; + } + + for (ptr = data; ptr < endp;) { + if (!dev->isoc_ctl.cmd) { + /* Header */ + if (dev->isoc_ctl.tmp_buf_len > 0) { + /* from last urb or packet */ + header = dev->isoc_ctl.tmp_buf; + if (4 - dev->isoc_ctl.tmp_buf_len > 0) { + memcpy((u8 *)&header + + dev->isoc_ctl.tmp_buf_len, + ptr, + 4 - dev->isoc_ctl.tmp_buf_len); + ptr += 4 - dev->isoc_ctl.tmp_buf_len; + } + dev->isoc_ctl.tmp_buf_len = 0; + } else { + if (ptr + 3 >= endp) { + /* have incomplete header */ + dev->isoc_ctl.tmp_buf_len = endp - ptr; + memcpy(&dev->isoc_ctl.tmp_buf, ptr, + dev->isoc_ctl.tmp_buf_len); + return rc; + } + /* Seek for sync */ + for (; ptr < endp - 3; ptr++) { + if (*(ptr + 3) == 0x47) + break; + } + /* Get message header */ + header = *(unsigned long *)ptr; + ptr += 4; + } + + /* split the header fields */ + size = ((header & 0x7e) << 1); + if (size > 0) + size -= 4; + block = (header >> 7) & 0xf; + field = (header >> 11) & 0x1; + line = (header >> 12) & 0x1ff; + cmd = (header >> 21) & 0x7; + /* Validates header fields */ + if (size > TM6000_URB_MSG_LEN) + size = TM6000_URB_MSG_LEN; + pktsize = TM6000_URB_MSG_LEN; + /* + * calculate position in buffer and change the buffer + */ + switch (cmd) { + case TM6000_URB_MSG_VIDEO: + if (!dev->radio) { + if ((dev->isoc_ctl.vfield != field) && + (field == 1)) { + /* + * Announces that a new buffer + * were filled + */ + buffer_filled(dev, dma_q, vbuf); + dprintk(dev, V4L2_DEBUG_ISOC, + "new buffer filled\n"); + get_next_buf(dma_q, &vbuf); + if (!vbuf) + return rc; + voutp = videobuf_to_vmalloc(&vbuf->vb); + if (!voutp) + return rc; + memset(voutp, 0, vbuf->vb.size); + } + linewidth = vbuf->vb.width << 1; + pos = ((line << 1) - field - 1) * + linewidth + block * TM6000_URB_MSG_LEN; + /* Don't allow to write out of the buffer */ + if (pos + size > vbuf->vb.size) + cmd = TM6000_URB_MSG_ERR; + dev->isoc_ctl.vfield = field; + } + break; + case TM6000_URB_MSG_VBI: + break; + case TM6000_URB_MSG_AUDIO: + case TM6000_URB_MSG_PTS: + size = pktsize; /* Size is always 180 bytes */ + break; + } + } else { + /* Continue the last copy */ + cmd = dev->isoc_ctl.cmd; + size = dev->isoc_ctl.size; + pos = dev->isoc_ctl.pos; + pktsize = dev->isoc_ctl.pktsize; + field = dev->isoc_ctl.field; + } + cpysize = (endp - ptr > size) ? size : endp - ptr; + if (cpysize) { + /* copy data in different buffers */ + switch (cmd) { + case TM6000_URB_MSG_VIDEO: + /* Fills video buffer */ + if (vbuf) + memcpy(&voutp[pos], ptr, cpysize); + break; + case TM6000_URB_MSG_AUDIO: { + int i; + for (i = 0; i < cpysize; i += 2) + swab16s((u16 *)(ptr + i)); + + tm6000_call_fillbuf(dev, TM6000_AUDIO, ptr, cpysize); + break; + } + case TM6000_URB_MSG_VBI: + /* Need some code to copy vbi buffer */ + break; + case TM6000_URB_MSG_PTS: { + /* Need some code to copy pts */ + u32 pts; + pts = *(u32 *)ptr; + dprintk(dev, V4L2_DEBUG_ISOC, "field %d, PTS %x", + field, pts); + break; + } + } + } + if (ptr + pktsize > endp) { + /* + * End of URB packet, but cmd processing is not + * complete. Preserve the state for a next packet + */ + dev->isoc_ctl.pos = pos + cpysize; + dev->isoc_ctl.size = size - cpysize; + dev->isoc_ctl.cmd = cmd; + dev->isoc_ctl.field = field; + dev->isoc_ctl.pktsize = pktsize - (endp - ptr); + ptr += endp - ptr; + } else { + dev->isoc_ctl.cmd = 0; + ptr += pktsize; + } + } + return 0; +} + +/* + * Identify the tm5600/6000 buffer header type and properly handles + */ +static int copy_multiplexed(u8 *ptr, unsigned long len, + struct urb *urb) +{ + struct tm6000_dmaqueue *dma_q = urb->context; + struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq); + unsigned int pos = dev->isoc_ctl.pos, cpysize; + int rc = 1; + struct tm6000_buffer *buf; + char *outp = NULL; + + get_next_buf(dma_q, &buf); + if (buf) + outp = videobuf_to_vmalloc(&buf->vb); + + if (!outp) + return 0; + + while (len > 0) { + cpysize = min(len, buf->vb.size-pos); + memcpy(&outp[pos], ptr, cpysize); + pos += cpysize; + ptr += cpysize; + len -= cpysize; + if (pos >= buf->vb.size) { + pos = 0; + /* Announces that a new buffer were filled */ + buffer_filled(dev, dma_q, buf); + dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n"); + get_next_buf(dma_q, &buf); + if (!buf) + break; + outp = videobuf_to_vmalloc(&(buf->vb)); + if (!outp) + return rc; + pos = 0; + } + } + + dev->isoc_ctl.pos = pos; + return rc; +} + +static inline void print_err_status(struct tm6000_core *dev, + int packet, int status) +{ + char *errmsg = "Unknown"; + + switch (status) { + case -ENOENT: + errmsg = "unlinked synchronously"; + break; + case -ECONNRESET: + errmsg = "unlinked asynchronously"; + 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) { + dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n", + status, errmsg); + } else { + dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n", + packet, status, errmsg); + } +} + + +/* + * Controls the isoc copy of each urb packet + */ +static inline int tm6000_isoc_copy(struct urb *urb) +{ + struct tm6000_dmaqueue *dma_q = urb->context; + struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq); + int i, len = 0, rc = 1, status; + char *p; + + if (urb->status < 0) { + print_err_status(dev, -1, urb->status); + return 0; + } + + for (i = 0; i < urb->number_of_packets; i++) { + status = urb->iso_frame_desc[i].status; + + if (status < 0) { + print_err_status(dev, i, status); + continue; + } + + len = urb->iso_frame_desc[i].actual_length; + + if (len > 0) { + p = urb->transfer_buffer + urb->iso_frame_desc[i].offset; + if (!urb->iso_frame_desc[i].status) { + if ((dev->fourcc) == V4L2_PIX_FMT_TM6000) { + rc = copy_multiplexed(p, len, urb); + if (rc <= 0) + return rc; + } else { + copy_streams(p, len, urb); + } + } + } + } + return rc; +} + +/* ------------------------------------------------------------------ + * URB control + * ------------------------------------------------------------------ + */ + +/* + * IRQ callback, called by URB callback + */ +static void tm6000_irq_callback(struct urb *urb) +{ + struct tm6000_dmaqueue *dma_q = urb->context; + struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq); + unsigned long flags; + int i; + + switch (urb->status) { + case 0: + case -ETIMEDOUT: + break; + + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + return; + + default: + tm6000_err("urb completion error %d.\n", urb->status); + break; + } + + spin_lock_irqsave(&dev->slock, flags); + tm6000_isoc_copy(urb); + spin_unlock_irqrestore(&dev->slock, flags); + + /* Reset urb buffers */ + for (i = 0; i < urb->number_of_packets; i++) { + urb->iso_frame_desc[i].status = 0; + urb->iso_frame_desc[i].actual_length = 0; + } + + urb->status = usb_submit_urb(urb, GFP_ATOMIC); + if (urb->status) + tm6000_err("urb resubmit failed (error=%i)\n", + urb->status); +} + +/* + * Allocate URB buffers + */ +static int tm6000_alloc_urb_buffers(struct tm6000_core *dev) +{ + int num_bufs = TM6000_NUM_URB_BUF; + int i; + + if (dev->urb_buffer) + return 0; + + dev->urb_buffer = kmalloc_array(num_bufs, sizeof(*dev->urb_buffer), + GFP_KERNEL); + if (!dev->urb_buffer) + return -ENOMEM; + + dev->urb_dma = kmalloc_array(num_bufs, sizeof(*dev->urb_dma), + GFP_KERNEL); + if (!dev->urb_dma) + return -ENOMEM; + + for (i = 0; i < num_bufs; i++) { + dev->urb_buffer[i] = usb_alloc_coherent( + dev->udev, dev->urb_size, + GFP_KERNEL, &dev->urb_dma[i]); + if (!dev->urb_buffer[i]) { + tm6000_err("unable to allocate %i bytes for transfer buffer %i\n", + dev->urb_size, i); + return -ENOMEM; + } + memset(dev->urb_buffer[i], 0, dev->urb_size); + } + + return 0; +} + +/* + * Free URB buffers + */ +static int tm6000_free_urb_buffers(struct tm6000_core *dev) +{ + int i; + + if (!dev->urb_buffer) + return 0; + + for (i = 0; i < TM6000_NUM_URB_BUF; i++) { + if (dev->urb_buffer[i]) { + usb_free_coherent(dev->udev, + dev->urb_size, + dev->urb_buffer[i], + dev->urb_dma[i]); + dev->urb_buffer[i] = NULL; + } + } + kfree(dev->urb_buffer); + kfree(dev->urb_dma); + dev->urb_buffer = NULL; + dev->urb_dma = NULL; + + return 0; +} + +/* + * Stop and Deallocate URBs + */ +static void tm6000_uninit_isoc(struct tm6000_core *dev) +{ + struct urb *urb; + int i; + + dev->isoc_ctl.buf = NULL; + for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { + urb = dev->isoc_ctl.urb[i]; + if (urb) { + usb_kill_urb(urb); + usb_unlink_urb(urb); + usb_free_urb(urb); + dev->isoc_ctl.urb[i] = NULL; + } + dev->isoc_ctl.transfer_buffer[i] = NULL; + } + + if (!keep_urb) + tm6000_free_urb_buffers(dev); + + kfree(dev->isoc_ctl.urb); + kfree(dev->isoc_ctl.transfer_buffer); + + dev->isoc_ctl.urb = NULL; + dev->isoc_ctl.transfer_buffer = NULL; + dev->isoc_ctl.num_bufs = 0; +} + +/* + * Assign URBs and start IRQ + */ +static int tm6000_prepare_isoc(struct tm6000_core *dev) +{ + struct tm6000_dmaqueue *dma_q = &dev->vidq; + int i, j, sb_size, pipe, size, max_packets; + int num_bufs = TM6000_NUM_URB_BUF; + struct urb *urb; + + /* De-allocates all pending stuff */ + tm6000_uninit_isoc(dev); + /* Stop interrupt USB pipe */ + tm6000_ir_int_stop(dev); + + usb_set_interface(dev->udev, + dev->isoc_in.bInterfaceNumber, + dev->isoc_in.bAlternateSetting); + + /* Start interrupt USB pipe */ + tm6000_ir_int_start(dev); + + pipe = usb_rcvisocpipe(dev->udev, + dev->isoc_in.endp->desc.bEndpointAddress & + USB_ENDPOINT_NUMBER_MASK); + + size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe)); + + if (size > dev->isoc_in.maxsize) + size = dev->isoc_in.maxsize; + + dev->isoc_ctl.max_pkt_size = size; + + max_packets = TM6000_MAX_ISO_PACKETS; + sb_size = max_packets * size; + dev->urb_size = sb_size; + + dev->isoc_ctl.num_bufs = num_bufs; + + dev->isoc_ctl.urb = kmalloc_array(num_bufs, sizeof(void *), + GFP_KERNEL); + if (!dev->isoc_ctl.urb) + return -ENOMEM; + + dev->isoc_ctl.transfer_buffer = kmalloc_array(num_bufs, + sizeof(void *), + GFP_KERNEL); + if (!dev->isoc_ctl.transfer_buffer) { + kfree(dev->isoc_ctl.urb); + return -ENOMEM; + } + + dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets (%d bytes) of %d bytes each to handle %u size\n", + max_packets, num_bufs, sb_size, + dev->isoc_in.maxsize, size); + + + if (tm6000_alloc_urb_buffers(dev) < 0) { + tm6000_err("cannot allocate memory for urb buffers\n"); + + /* call free, as some buffers might have been allocated */ + tm6000_free_urb_buffers(dev); + kfree(dev->isoc_ctl.urb); + kfree(dev->isoc_ctl.transfer_buffer); + return -ENOMEM; + } + + /* allocate urbs and transfer buffers */ + for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { + urb = usb_alloc_urb(max_packets, GFP_KERNEL); + if (!urb) { + tm6000_uninit_isoc(dev); + tm6000_free_urb_buffers(dev); + return -ENOMEM; + } + dev->isoc_ctl.urb[i] = urb; + + urb->transfer_dma = dev->urb_dma[i]; + dev->isoc_ctl.transfer_buffer[i] = dev->urb_buffer[i]; + + usb_fill_bulk_urb(urb, dev->udev, pipe, + dev->isoc_ctl.transfer_buffer[i], sb_size, + tm6000_irq_callback, dma_q); + urb->interval = dev->isoc_in.endp->desc.bInterval; + urb->number_of_packets = max_packets; + urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; + + for (j = 0; j < max_packets; j++) { + urb->iso_frame_desc[j].offset = size * j; + urb->iso_frame_desc[j].length = size; + } + } + + return 0; +} + +static int tm6000_start_thread(struct tm6000_core *dev) +{ + struct tm6000_dmaqueue *dma_q = &dev->vidq; + int i; + + dma_q->frame = 0; + dma_q->ini_jiffies = jiffies; + + init_waitqueue_head(&dma_q->wq); + + /* submit urbs and enables IRQ */ + for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { + int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC); + if (rc) { + tm6000_err("submit of urb %i failed (error=%i)\n", i, + rc); + tm6000_uninit_isoc(dev); + return rc; + } + } + + return 0; +} + +/* ------------------------------------------------------------------ + * Videobuf operations + * ------------------------------------------------------------------ + */ + +static int +buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) +{ + struct tm6000_fh *fh = vq->priv_data; + + *size = fh->fmt->depth * fh->width * fh->height >> 3; + if (0 == *count) + *count = TM6000_DEF_BUF; + + if (*count < TM6000_MIN_BUF) + *count = TM6000_MIN_BUF; + + while (*size * *count > vid_limit * 1024 * 1024) + (*count)--; + + return 0; +} + +static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf) +{ + struct tm6000_fh *fh = vq->priv_data; + struct tm6000_core *dev = fh->dev; + unsigned long flags; + + BUG_ON(in_interrupt()); + + /* 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; +} + +static int +buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, + enum v4l2_field field) +{ + struct tm6000_fh *fh = vq->priv_data; + struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb); + struct tm6000_core *dev = fh->dev; + int rc = 0; + + BUG_ON(NULL == fh->fmt); + + + /* FIXME: It assumes depth=2 */ + /* The only currently supported format is 16 bits/pixel */ + buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3; + if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) + return -EINVAL; + + if (buf->fmt != fh->fmt || + buf->vb.width != fh->width || + buf->vb.height != fh->height || + buf->vb.field != field) { + buf->fmt = fh->fmt; + buf->vb.width = fh->width; + buf->vb.height = fh->height; + buf->vb.field = field; + buf->vb.state = VIDEOBUF_NEEDS_INIT; + } + + if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { + rc = videobuf_iolock(vq, &buf->vb, NULL); + if (rc != 0) + goto fail; + } + + if (!dev->isoc_ctl.num_bufs) { + rc = tm6000_prepare_isoc(dev); + if (rc < 0) + goto fail; + + rc = tm6000_start_thread(dev); + if (rc < 0) + goto fail; + + } + + buf->vb.state = VIDEOBUF_PREPARED; + return 0; + +fail: + free_buffer(vq, buf); + return rc; +} + +static void +buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) +{ + struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb); + struct tm6000_fh *fh = vq->priv_data; + struct tm6000_core *dev = fh->dev; + struct tm6000_dmaqueue *vidq = &dev->vidq; + + buf->vb.state = VIDEOBUF_QUEUED; + list_add_tail(&buf->vb.queue, &vidq->active); +} + +static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb) +{ + struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb); + + free_buffer(vq, buf); +} + +static const struct videobuf_queue_ops tm6000_video_qops = { + .buf_setup = buffer_setup, + .buf_prepare = buffer_prepare, + .buf_queue = buffer_queue, + .buf_release = buffer_release, +}; + +/* ------------------------------------------------------------------ + * IOCTL handling + * ------------------------------------------------------------------ + */ + +static bool is_res_read(struct tm6000_core *dev, struct tm6000_fh *fh) +{ + /* Is the current fh handling it? if so, that's OK */ + if (dev->resources == fh && dev->is_res_read) + return true; + + return false; +} + +static bool is_res_streaming(struct tm6000_core *dev, struct tm6000_fh *fh) +{ + /* Is the current fh handling it? if so, that's OK */ + if (dev->resources == fh) + return true; + + return false; +} + +static bool res_get(struct tm6000_core *dev, struct tm6000_fh *fh, + bool is_res_read) +{ + /* Is the current fh handling it? if so, that's OK */ + if (dev->resources == fh && dev->is_res_read == is_res_read) + return true; + + /* is it free? */ + if (dev->resources) + return false; + + /* grab it */ + dev->resources = fh; + dev->is_res_read = is_res_read; + dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n"); + return true; +} + +static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh) +{ + /* Is the current fh handling it? if so, that's OK */ + if (dev->resources != fh) + return; + + dev->resources = NULL; + dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n"); +} + +/* ------------------------------------------------------------------ + * IOCTL vidioc handling + * ------------------------------------------------------------------ + */ +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev; + + strscpy(cap->driver, "tm6000", sizeof(cap->driver)); + strscpy(cap->card, "Trident TM5600/6000/6010", sizeof(cap->card)); + usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); + cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | + V4L2_CAP_DEVICE_CAPS; + if (dev->tuner_type != TUNER_ABSENT) + cap->capabilities |= V4L2_CAP_TUNER; + if (dev->caps.has_radio) + cap->capabilities |= V4L2_CAP_RADIO; + + return 0; +} + +static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + if (f->index >= ARRAY_SIZE(format)) + return -EINVAL; + + f->pixelformat = format[f->index].fourcc; + return 0; +} + +static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct tm6000_fh *fh = priv; + + f->fmt.pix.width = fh->width; + f->fmt.pix.height = fh->height; + f->fmt.pix.field = fh->vb_vidq.field; + f->fmt.pix.pixelformat = fh->fmt->fourcc; + f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; + f->fmt.pix.bytesperline = + (f->fmt.pix.width * fh->fmt->depth) >> 3; + f->fmt.pix.sizeimage = + f->fmt.pix.height * f->fmt.pix.bytesperline; + + return 0; +} + +static struct tm6000_fmt *format_by_fourcc(unsigned int fourcc) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(format); i++) + if (format[i].fourcc == fourcc) + return format+i; + return NULL; +} + +static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev; + struct tm6000_fmt *fmt; + enum v4l2_field field; + + fmt = format_by_fourcc(f->fmt.pix.pixelformat); + if (NULL == fmt) { + dprintk(dev, 2, "Fourcc format (0x%08x) invalid.\n", + f->fmt.pix.pixelformat); + return -EINVAL; + } + + field = f->fmt.pix.field; + + field = V4L2_FIELD_INTERLACED; + + tm6000_get_std_res(dev); + + f->fmt.pix.width = dev->width; + f->fmt.pix.height = dev->height; + + f->fmt.pix.width &= ~0x01; + + f->fmt.pix.field = field; + + f->fmt.pix.bytesperline = + (f->fmt.pix.width * fmt->depth) >> 3; + f->fmt.pix.sizeimage = + f->fmt.pix.height * f->fmt.pix.bytesperline; + f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; + + return 0; +} + +/*FIXME: This seems to be generic enough to be at videodev2 */ +static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct tm6000_fh *fh = priv; + struct tm6000_core *dev = fh->dev; + int ret = vidioc_try_fmt_vid_cap(file, fh, f); + if (ret < 0) + return ret; + + fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat); + fh->width = f->fmt.pix.width; + fh->height = f->fmt.pix.height; + fh->vb_vidq.field = f->fmt.pix.field; + fh->type = f->type; + + dev->fourcc = f->fmt.pix.pixelformat; + + tm6000_set_fourcc_format(dev); + + return 0; +} + +static int vidioc_reqbufs(struct file *file, void *priv, + struct v4l2_requestbuffers *p) +{ + struct tm6000_fh *fh = priv; + + return videobuf_reqbufs(&fh->vb_vidq, p); +} + +static int vidioc_querybuf(struct file *file, void *priv, + struct v4l2_buffer *p) +{ + struct tm6000_fh *fh = priv; + + return videobuf_querybuf(&fh->vb_vidq, p); +} + +static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) +{ + struct tm6000_fh *fh = priv; + + return videobuf_qbuf(&fh->vb_vidq, p); +} + +static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) +{ + struct tm6000_fh *fh = priv; + + return videobuf_dqbuf(&fh->vb_vidq, p, + file->f_flags & O_NONBLOCK); +} + +static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) +{ + struct tm6000_fh *fh = priv; + struct tm6000_core *dev = fh->dev; + + if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + if (i != fh->type) + return -EINVAL; + + if (!res_get(dev, fh, false)) + return -EBUSY; + return videobuf_streamon(&fh->vb_vidq); +} + +static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) +{ + struct tm6000_fh *fh = priv; + struct tm6000_core *dev = fh->dev; + + if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + if (i != fh->type) + return -EINVAL; + + videobuf_streamoff(&fh->vb_vidq); + res_free(dev, fh); + + return 0; +} + +static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm) +{ + int rc = 0; + struct tm6000_fh *fh = priv; + struct tm6000_core *dev = fh->dev; + + dev->norm = norm; + rc = tm6000_init_analog_mode(dev); + + fh->width = dev->width; + fh->height = dev->height; + + if (rc < 0) + return rc; + + v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->norm); + + return 0; +} + +static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm) +{ + struct tm6000_fh *fh = priv; + struct tm6000_core *dev = fh->dev; + + *norm = dev->norm; + return 0; +} + +static const char *iname[] = { + [TM6000_INPUT_TV] = "Television", + [TM6000_INPUT_COMPOSITE1] = "Composite 1", + [TM6000_INPUT_COMPOSITE2] = "Composite 2", + [TM6000_INPUT_SVIDEO] = "S-Video", +}; + +static int vidioc_enum_input(struct file *file, void *priv, + struct v4l2_input *i) +{ + struct tm6000_fh *fh = priv; + struct tm6000_core *dev = fh->dev; + unsigned int n; + + n = i->index; + if (n >= 3) + return -EINVAL; + + if (!dev->vinput[n].type) + return -EINVAL; + + i->index = n; + + if (dev->vinput[n].type == TM6000_INPUT_TV) + i->type = V4L2_INPUT_TYPE_TUNER; + else + i->type = V4L2_INPUT_TYPE_CAMERA; + + strscpy(i->name, iname[dev->vinput[n].type], sizeof(i->name)); + + i->std = TM6000_STD; + + return 0; +} + +static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) +{ + struct tm6000_fh *fh = priv; + struct tm6000_core *dev = fh->dev; + + *i = dev->input; + + return 0; +} + +static int vidioc_s_input(struct file *file, void *priv, unsigned int i) +{ + struct tm6000_fh *fh = priv; + struct tm6000_core *dev = fh->dev; + int rc = 0; + + if (i >= 3) + return -EINVAL; + if (!dev->vinput[i].type) + return -EINVAL; + + dev->input = i; + + rc = vidioc_s_std(file, priv, dev->norm); + + return rc; +} + +/* --- controls ---------------------------------------------- */ + +static int tm6000_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct tm6000_core *dev = container_of(ctrl->handler, struct tm6000_core, ctrl_handler); + u8 val = ctrl->val; + + switch (ctrl->id) { + case V4L2_CID_CONTRAST: + tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val); + return 0; + case V4L2_CID_BRIGHTNESS: + tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val); + return 0; + case V4L2_CID_SATURATION: + tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val); + return 0; + case V4L2_CID_HUE: + tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val); + return 0; + } + return -EINVAL; +} + +static const struct v4l2_ctrl_ops tm6000_ctrl_ops = { + .s_ctrl = tm6000_s_ctrl, +}; + +static int tm6000_radio_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct tm6000_core *dev = container_of(ctrl->handler, + struct tm6000_core, radio_ctrl_handler); + u8 val = ctrl->val; + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + dev->ctl_mute = val; + tm6000_tvaudio_set_mute(dev, val); + return 0; + case V4L2_CID_AUDIO_VOLUME: + dev->ctl_volume = val; + tm6000_set_volume(dev, val); + return 0; + } + return -EINVAL; +} + +static const struct v4l2_ctrl_ops tm6000_radio_ctrl_ops = { + .s_ctrl = tm6000_radio_s_ctrl, +}; + +static int vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *t) +{ + struct tm6000_fh *fh = priv; + struct tm6000_core *dev = fh->dev; + + if (UNSET == dev->tuner_type) + return -ENOTTY; + if (0 != t->index) + return -EINVAL; + + strscpy(t->name, "Television", sizeof(t->name)); + t->type = V4L2_TUNER_ANALOG_TV; + t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO; + t->rangehigh = 0xffffffffUL; + t->rxsubchans = V4L2_TUNER_SUB_STEREO; + + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t); + + t->audmode = dev->amode; + + return 0; +} + +static int vidioc_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *t) +{ + struct tm6000_fh *fh = priv; + struct tm6000_core *dev = fh->dev; + + if (UNSET == dev->tuner_type) + return -ENOTTY; + if (0 != t->index) + return -EINVAL; + + if (t->audmode > V4L2_TUNER_MODE_STEREO) + dev->amode = V4L2_TUNER_MODE_STEREO; + else + dev->amode = t->audmode; + dprintk(dev, 3, "audio mode: %x\n", t->audmode); + + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t); + + return 0; +} + +static int vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct tm6000_fh *fh = priv; + struct tm6000_core *dev = fh->dev; + + if (UNSET == dev->tuner_type) + return -ENOTTY; + if (f->tuner) + return -EINVAL; + + f->frequency = dev->freq; + + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f); + + return 0; +} + +static int vidioc_s_frequency(struct file *file, void *priv, + const struct v4l2_frequency *f) +{ + struct tm6000_fh *fh = priv; + struct tm6000_core *dev = fh->dev; + + if (UNSET == dev->tuner_type) + return -ENOTTY; + if (f->tuner != 0) + return -EINVAL; + + dev->freq = f->frequency; + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f); + + return 0; +} + +static int radio_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *t) +{ + struct tm6000_fh *fh = file->private_data; + struct tm6000_core *dev = fh->dev; + + if (0 != t->index) + return -EINVAL; + + memset(t, 0, sizeof(*t)); + strscpy(t->name, "Radio", sizeof(t->name)); + t->type = V4L2_TUNER_RADIO; + t->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; + t->rxsubchans = V4L2_TUNER_SUB_STEREO; + t->audmode = V4L2_TUNER_MODE_STEREO; + + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t); + + return 0; +} + +static int radio_s_tuner(struct file *file, void *priv, + const struct v4l2_tuner *t) +{ + struct tm6000_fh *fh = file->private_data; + struct tm6000_core *dev = fh->dev; + + if (0 != t->index) + return -EINVAL; + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t); + return 0; +} + +/* ------------------------------------------------------------------ + File operations for the device + ------------------------------------------------------------------*/ + +static int __tm6000_open(struct file *file) +{ + struct video_device *vdev = video_devdata(file); + struct tm6000_core *dev = video_drvdata(file); + struct tm6000_fh *fh; + enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + int rc; + int radio = 0; + + dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n", + video_device_node_name(vdev)); + + switch (vdev->vfl_type) { + case VFL_TYPE_VIDEO: + type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + break; + case VFL_TYPE_VBI: + type = V4L2_BUF_TYPE_VBI_CAPTURE; + break; + case VFL_TYPE_RADIO: + radio = 1; + break; + default: + return -EINVAL; + } + + /* If more than one user, mutex should be added */ + dev->users++; + + dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n", + video_device_node_name(vdev), v4l2_type_names[type], + dev->users); + + /* allocate + initialize per filehandle data */ + fh = kzalloc(sizeof(*fh), GFP_KERNEL); + if (NULL == fh) { + dev->users--; + return -ENOMEM; + } + + v4l2_fh_init(&fh->fh, vdev); + file->private_data = fh; + fh->dev = dev; + fh->radio = radio; + dev->radio = radio; + fh->type = type; + dev->fourcc = format[0].fourcc; + + fh->fmt = format_by_fourcc(dev->fourcc); + + tm6000_get_std_res(dev); + + fh->width = dev->width; + fh->height = dev->height; + + dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=%p, dev=%p, dev->vidq=%p\n", + fh, dev, &dev->vidq); + dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty queued=%d\n", + list_empty(&dev->vidq.queued)); + dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty active=%d\n", + list_empty(&dev->vidq.active)); + + /* initialize hardware on analog mode */ + rc = tm6000_init_analog_mode(dev); + if (rc < 0) { + v4l2_fh_exit(&fh->fh); + kfree(fh); + return rc; + } + + dev->mode = TM6000_MODE_ANALOG; + + if (!fh->radio) { + videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops, + NULL, &dev->slock, + fh->type, + V4L2_FIELD_INTERLACED, + sizeof(struct tm6000_buffer), fh, &dev->lock); + } else { + dprintk(dev, V4L2_DEBUG_OPEN, "video_open: setting radio device\n"); + tm6000_set_audio_rinput(dev); + v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio); + tm6000_prepare_isoc(dev); + tm6000_start_thread(dev); + } + v4l2_fh_add(&fh->fh); + + return 0; +} + +static int tm6000_open(struct file *file) +{ + struct video_device *vdev = video_devdata(file); + int res; + + mutex_lock(vdev->lock); + res = __tm6000_open(file); + mutex_unlock(vdev->lock); + return res; +} + +static ssize_t +tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos) +{ + struct tm6000_fh *fh = file->private_data; + struct tm6000_core *dev = fh->dev; + + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { + int res; + + if (!res_get(fh->dev, fh, true)) + return -EBUSY; + + if (mutex_lock_interruptible(&dev->lock)) + return -ERESTARTSYS; + res = videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0, + file->f_flags & O_NONBLOCK); + mutex_unlock(&dev->lock); + return res; + } + return 0; +} + +static __poll_t +__tm6000_poll(struct file *file, struct poll_table_struct *wait) +{ + __poll_t req_events = poll_requested_events(wait); + struct tm6000_fh *fh = file->private_data; + struct tm6000_buffer *buf; + __poll_t res = 0; + + if (v4l2_event_pending(&fh->fh)) + res = EPOLLPRI; + else if (req_events & EPOLLPRI) + poll_wait(file, &fh->fh.wait, wait); + if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) + return res | EPOLLERR; + + if (!!is_res_streaming(fh->dev, fh)) + return res | EPOLLERR; + + if (!is_res_read(fh->dev, fh)) { + /* streaming capture */ + if (list_empty(&fh->vb_vidq.stream)) + return res | EPOLLERR; + buf = list_entry(fh->vb_vidq.stream.next, struct tm6000_buffer, vb.stream); + poll_wait(file, &buf->vb.done, wait); + if (buf->vb.state == VIDEOBUF_DONE || + buf->vb.state == VIDEOBUF_ERROR) + return res | EPOLLIN | EPOLLRDNORM; + } else if (req_events & (EPOLLIN | EPOLLRDNORM)) { + /* read() capture */ + return res | videobuf_poll_stream(file, &fh->vb_vidq, wait); + } + return res; +} + +static __poll_t tm6000_poll(struct file *file, struct poll_table_struct *wait) +{ + struct tm6000_fh *fh = file->private_data; + struct tm6000_core *dev = fh->dev; + __poll_t res; + + mutex_lock(&dev->lock); + res = __tm6000_poll(file, wait); + mutex_unlock(&dev->lock); + return res; +} + +static int tm6000_release(struct file *file) +{ + struct tm6000_fh *fh = file->private_data; + struct tm6000_core *dev = fh->dev; + struct video_device *vdev = video_devdata(file); + + dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n", + video_device_node_name(vdev), dev->users); + + mutex_lock(&dev->lock); + dev->users--; + + res_free(dev, fh); + + if (!dev->users) { + tm6000_uninit_isoc(dev); + + /* Stop interrupt USB pipe */ + tm6000_ir_int_stop(dev); + + usb_reset_configuration(dev->udev); + + if (dev->int_in.endp) + usb_set_interface(dev->udev, + dev->isoc_in.bInterfaceNumber, 2); + else + usb_set_interface(dev->udev, + dev->isoc_in.bInterfaceNumber, 0); + + /* Start interrupt USB pipe */ + tm6000_ir_int_start(dev); + + if (!fh->radio) + videobuf_mmap_free(&fh->vb_vidq); + } + v4l2_fh_del(&fh->fh); + v4l2_fh_exit(&fh->fh); + kfree(fh); + mutex_unlock(&dev->lock); + + return 0; +} + +static int tm6000_mmap(struct file *file, struct vm_area_struct * vma) +{ + struct tm6000_fh *fh = file->private_data; + struct tm6000_core *dev = fh->dev; + int res; + + if (mutex_lock_interruptible(&dev->lock)) + return -ERESTARTSYS; + res = videobuf_mmap_mapper(&fh->vb_vidq, vma); + mutex_unlock(&dev->lock); + return res; +} + +static const struct v4l2_file_operations tm6000_fops = { + .owner = THIS_MODULE, + .open = tm6000_open, + .release = tm6000_release, + .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */ + .read = tm6000_read, + .poll = tm6000_poll, + .mmap = tm6000_mmap, +}; + +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_s_std = vidioc_s_std, + .vidioc_g_std = vidioc_g_std, + .vidioc_enum_input = vidioc_enum_input, + .vidioc_g_input = vidioc_g_input, + .vidioc_s_input = vidioc_s_input, + .vidioc_g_tuner = vidioc_g_tuner, + .vidioc_s_tuner = vidioc_s_tuner, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, + .vidioc_streamon = vidioc_streamon, + .vidioc_streamoff = vidioc_streamoff, + .vidioc_reqbufs = vidioc_reqbufs, + .vidioc_querybuf = vidioc_querybuf, + .vidioc_qbuf = vidioc_qbuf, + .vidioc_dqbuf = vidioc_dqbuf, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static struct video_device tm6000_template = { + .name = "tm6000", + .fops = &tm6000_fops, + .ioctl_ops = &video_ioctl_ops, + .release = video_device_release_empty, + .tvnorms = TM6000_STD, +}; + +static const struct v4l2_file_operations radio_fops = { + .owner = THIS_MODULE, + .open = tm6000_open, + .poll = v4l2_ctrl_poll, + .release = tm6000_release, + .unlocked_ioctl = video_ioctl2, +}; + +static const struct v4l2_ioctl_ops radio_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_g_tuner = radio_g_tuner, + .vidioc_s_tuner = radio_s_tuner, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static struct video_device tm6000_radio_template = { + .name = "tm6000", + .fops = &radio_fops, + .ioctl_ops = &radio_ioctl_ops, +}; + +/* ----------------------------------------------------------------- + * Initialization and module stuff + * ------------------------------------------------------------------ + */ + +static void vdev_init(struct tm6000_core *dev, + struct video_device *vfd, + const struct video_device + *template, const char *type_name) +{ + *vfd = *template; + vfd->v4l2_dev = &dev->v4l2_dev; + vfd->release = video_device_release_empty; + vfd->lock = &dev->lock; + + snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name); + + video_set_drvdata(vfd, dev); +} + +int tm6000_v4l2_register(struct tm6000_core *dev) +{ + int ret = 0; + + v4l2_ctrl_handler_init(&dev->ctrl_handler, 6); + v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 2); + v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops, + V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); + v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops, + V4L2_CID_AUDIO_VOLUME, -15, 15, 1, 0); + v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops, + V4L2_CID_BRIGHTNESS, 0, 255, 1, 54); + v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops, + V4L2_CID_CONTRAST, 0, 255, 1, 119); + v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops, + V4L2_CID_SATURATION, 0, 255, 1, 112); + v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops, + V4L2_CID_HUE, -128, 127, 1, 0); + v4l2_ctrl_add_handler(&dev->ctrl_handler, + &dev->radio_ctrl_handler, NULL, false); + + if (dev->radio_ctrl_handler.error) + ret = dev->radio_ctrl_handler.error; + if (!ret && dev->ctrl_handler.error) + ret = dev->ctrl_handler.error; + if (ret) + goto free_ctrl; + + vdev_init(dev, &dev->vfd, &tm6000_template, "video"); + + dev->vfd.ctrl_handler = &dev->ctrl_handler; + dev->vfd.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | + V4L2_CAP_READWRITE; + if (dev->tuner_type != TUNER_ABSENT) + dev->vfd.device_caps |= V4L2_CAP_TUNER; + + /* init video dma queues */ + INIT_LIST_HEAD(&dev->vidq.active); + INIT_LIST_HEAD(&dev->vidq.queued); + + ret = video_register_device(&dev->vfd, VFL_TYPE_VIDEO, video_nr); + + if (ret < 0) { + printk(KERN_INFO "%s: can't register video device\n", + dev->name); + goto free_ctrl; + } + + printk(KERN_INFO "%s: registered device %s\n", + dev->name, video_device_node_name(&dev->vfd)); + + if (dev->caps.has_radio) { + vdev_init(dev, &dev->radio_dev, &tm6000_radio_template, + "radio"); + dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler; + dev->radio_dev.device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER; + ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO, + radio_nr); + if (ret < 0) { + printk(KERN_INFO "%s: can't register radio device\n", + dev->name); + goto unreg_video; + } + + printk(KERN_INFO "%s: registered device %s\n", + dev->name, video_device_node_name(&dev->radio_dev)); + } + + printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret); + return ret; + +unreg_video: + video_unregister_device(&dev->vfd); +free_ctrl: + v4l2_ctrl_handler_free(&dev->ctrl_handler); + v4l2_ctrl_handler_free(&dev->radio_ctrl_handler); + return ret; +} + +int tm6000_v4l2_unregister(struct tm6000_core *dev) +{ + video_unregister_device(&dev->vfd); + + /* if URB buffers are still allocated free them now */ + tm6000_free_urb_buffers(dev); + + video_unregister_device(&dev->radio_dev); + return 0; +} + +int tm6000_v4l2_exit(void) +{ + return 0; +} + +module_param(video_nr, int, 0); +MODULE_PARM_DESC(video_nr, "Allow changing video device number"); + +module_param_named(debug, tm6000_debug, int, 0444); +MODULE_PARM_DESC(debug, "activates debug info"); + +module_param(vid_limit, int, 0644); +MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes"); + +module_param(keep_urb, bool, 0); +MODULE_PARM_DESC(keep_urb, "Keep urb buffers allocated even when the device is closed by the user"); |