--- /dev/null
+/*
+ * Driver for the Conexant CX25821 PCIe bridge
+ *
+ * Copyright (C) 2009 Conexant Systems Inc.
+ * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
+ * Based on Steven Toth <stoth@linuxtv.org> cx25821 driver
+ * Parts adapted/taken from Eduardo Moscoso Rubino
+ * Copyright (C) 2009 Eduardo Moscoso Rubino <moscoso@TopoLogica.com>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include "cx25821-video.h"
+
+MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
+MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
+MODULE_LICENSE("GPL");
+
+static unsigned int video_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET };
+
+module_param_array(video_nr, int, NULL, 0444);
+
+MODULE_PARM_DESC(video_nr, "video device numbers");
+
+static unsigned int video_debug = VIDEO_DEBUG;
+module_param(video_debug, int, 0644);
+MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
+
+static unsigned int irq_debug;
+module_param(irq_debug, int, 0644);
+MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");
+
+#define FORMAT_FLAGS_PACKED 0x01
+
+static const struct cx25821_fmt formats[] = {
+ {
+ .name = "4:1:1, packed, Y41P",
+ .fourcc = V4L2_PIX_FMT_Y41P,
+ .depth = 12,
+ .flags = FORMAT_FLAGS_PACKED,
+ }, {
+ .name = "4:2:2, packed, YUYV",
+ .fourcc = V4L2_PIX_FMT_YUYV,
+ .depth = 16,
+ .flags = FORMAT_FLAGS_PACKED,
+ },
+};
+
+static const struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(formats); i++)
+ if (formats[i].fourcc == fourcc)
+ return formats + i;
+ return NULL;
+}
+
+int cx25821_start_video_dma(struct cx25821_dev *dev,
+ struct cx25821_dmaqueue *q,
+ struct cx25821_buffer *buf,
+ const struct sram_channel *channel)
+{
+ int tmp = 0;
+
+ /* setup fifo + format */
+ cx25821_sram_channel_setup(dev, channel, buf->bpl, buf->risc.dma);
+
+ /* reset counter */
+ cx_write(channel->gpcnt_ctl, 3);
+
+ /* enable irq */
+ cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << channel->i));
+ cx_set(channel->int_msk, 0x11);
+
+ /* start dma */
+ cx_write(channel->dma_ctl, 0x11); /* FIFO and RISC enable */
+
+ /* make sure upstream setting if any is reversed */
+ tmp = cx_read(VID_CH_MODE_SEL);
+ cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
+
+ return 0;
+}
+
+int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status)
+{
+ int handled = 0;
+ u32 mask;
+ const struct sram_channel *channel = dev->channels[chan_num].sram_channels;
+
+ mask = cx_read(channel->int_msk);
+ if (0 == (status & mask))
+ return handled;
+
+ cx_write(channel->int_stat, status);
+
+ /* risc op code error */
+ if (status & (1 << 16)) {
+ pr_warn("%s, %s: video risc op code error\n",
+ dev->name, channel->name);
+ cx_clear(channel->dma_ctl, 0x11);
+ cx25821_sram_channel_dump(dev, channel);
+ }
+
+ /* risc1 y */
+ if (status & FLD_VID_DST_RISC1) {
+ struct cx25821_dmaqueue *dmaq =
+ &dev->channels[channel->i].dma_vidq;
+ struct cx25821_buffer *buf;
+
+ spin_lock(&dev->slock);
+ if (!list_empty(&dmaq->active)) {
+ buf = list_entry(dmaq->active.next,
+ struct cx25821_buffer, queue);
+
+ v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
+ buf->vb.v4l2_buf.sequence = dmaq->count++;
+ list_del(&buf->queue);
+ vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE);
+ }
+ spin_unlock(&dev->slock);
+ handled++;
+ }
+ return handled;
+}
+
+static int cx25821_queue_setup(struct vb2_queue *q, const struct v4l2_format *fmt,
+ unsigned int *num_buffers, unsigned int *num_planes,
+ unsigned int sizes[], void *alloc_ctxs[])
+{
+ struct cx25821_channel *chan = q->drv_priv;
+ unsigned size = (chan->fmt->depth * chan->width * chan->height) >> 3;
+
+ if (fmt && fmt->fmt.pix.sizeimage < size)
+ return -EINVAL;
+
+ *num_planes = 1;
+ sizes[0] = fmt ? fmt->fmt.pix.sizeimage : size;
+ alloc_ctxs[0] = chan->dev->alloc_ctx;
+ return 0;
+}
+
+static int cx25821_buffer_prepare(struct vb2_buffer *vb)
+{
+ struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
+ struct cx25821_dev *dev = chan->dev;
+ struct cx25821_buffer *buf =
+ container_of(vb, struct cx25821_buffer, vb);
+ struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
+ u32 line0_offset;
+ int bpl_local = LINE_SIZE_D1;
+ int ret;
+
+ if (chan->pixel_formats == PIXEL_FRMT_411)
+ buf->bpl = (chan->fmt->depth * chan->width) >> 3;
+ else
+ buf->bpl = (chan->fmt->depth >> 3) * chan->width;
+
+ if (vb2_plane_size(vb, 0) < chan->height * buf->bpl)
+ return -EINVAL;
+ vb2_set_plane_payload(vb, 0, chan->height * buf->bpl);
+ buf->vb.v4l2_buf.field = chan->field;
+
+ if (chan->pixel_formats == PIXEL_FRMT_411) {
+ bpl_local = buf->bpl;
+ } else {
+ bpl_local = buf->bpl; /* Default */
+
+ if (chan->use_cif_resolution) {
+ if (dev->tvnorm & V4L2_STD_625_50)
+ bpl_local = 352 << 1;
+ else
+ bpl_local = chan->cif_width << 1;
+ }
+ }
+
+ switch (chan->field) {
+ case V4L2_FIELD_TOP:
+ ret = cx25821_risc_buffer(dev->pci, &buf->risc,
+ sgt->sgl, 0, UNSET,
+ buf->bpl, 0, chan->height);
+ break;
+ case V4L2_FIELD_BOTTOM:
+ ret = cx25821_risc_buffer(dev->pci, &buf->risc,
+ sgt->sgl, UNSET, 0,
+ buf->bpl, 0, chan->height);
+ break;
+ case V4L2_FIELD_INTERLACED:
+ /* All other formats are top field first */
+ line0_offset = 0;
+ dprintk(1, "top field first\n");
+
+ ret = cx25821_risc_buffer(dev->pci, &buf->risc,
+ sgt->sgl, line0_offset,
+ bpl_local, bpl_local, bpl_local,
+ chan->height >> 1);
+ break;
+ case V4L2_FIELD_SEQ_TB:
+ ret = cx25821_risc_buffer(dev->pci, &buf->risc,
+ sgt->sgl,
+ 0, buf->bpl * (chan->height >> 1),
+ buf->bpl, 0, chan->height >> 1);
+ break;
+ case V4L2_FIELD_SEQ_BT:
+ ret = cx25821_risc_buffer(dev->pci, &buf->risc,
+ sgt->sgl,
+ buf->bpl * (chan->height >> 1), 0,
+ buf->bpl, 0, chan->height >> 1);
+ break;
+ default:
+ WARN_ON(1);
+ ret = -EINVAL;
+ break;
+ }
+
+ dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
+ buf, buf->vb.v4l2_buf.index, chan->width, chan->height,
+ chan->fmt->depth, chan->fmt->name,
+ (unsigned long)buf->risc.dma);
+
+ return ret;
+}
+
+static void cx25821_buffer_finish(struct vb2_buffer *vb)
+{
+ struct cx25821_buffer *buf =
+ container_of(vb, struct cx25821_buffer, vb);
+ struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
+ struct cx25821_dev *dev = chan->dev;
+
+ cx25821_free_buffer(dev, buf);
+}
+
+static void cx25821_buffer_queue(struct vb2_buffer *vb)
+{
+ struct cx25821_buffer *buf =
+ container_of(vb, struct cx25821_buffer, vb);
+ struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
+ struct cx25821_dev *dev = chan->dev;
+ struct cx25821_buffer *prev;
+ struct cx25821_dmaqueue *q = &dev->channels[chan->id].dma_vidq;
+
+ buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 12);
+ buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC);
+ buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 12);
+ buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
+
+ if (list_empty(&q->active)) {
+ list_add_tail(&buf->queue, &q->active);
+ } else {
+ buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1);
+ prev = list_entry(q->active.prev, struct cx25821_buffer,
+ queue);
+ list_add_tail(&buf->queue, &q->active);
+ prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
+ }
+}
+
+static int cx25821_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+ struct cx25821_channel *chan = q->drv_priv;
+ struct cx25821_dev *dev = chan->dev;
+ struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
+ struct cx25821_buffer *buf = list_entry(dmaq->active.next,
+ struct cx25821_buffer, queue);
+
+ dmaq->count = 0;
+ cx25821_start_video_dma(dev, dmaq, buf, chan->sram_channels);
+ return 0;
+}
+
+static void cx25821_stop_streaming(struct vb2_queue *q)
+{
+ struct cx25821_channel *chan = q->drv_priv;
+ struct cx25821_dev *dev = chan->dev;
+ struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
+ unsigned long flags;
+
+ cx_write(chan->sram_channels->dma_ctl, 0); /* FIFO and RISC disable */
+ spin_lock_irqsave(&dev->slock, flags);
+ while (!list_empty(&dmaq->active)) {
+ struct cx25821_buffer *buf = list_entry(dmaq->active.next,
+ struct cx25821_buffer, queue);
+
+ list_del(&buf->queue);
+ vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
+ }
+ spin_unlock_irqrestore(&dev->slock, flags);
+}
+
+static struct vb2_ops cx25821_video_qops = {
+ .queue_setup = cx25821_queue_setup,
+ .buf_prepare = cx25821_buffer_prepare,
+ .buf_finish = cx25821_buffer_finish,
+ .buf_queue = cx25821_buffer_queue,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+ .start_streaming = cx25821_start_streaming,
+ .stop_streaming = cx25821_stop_streaming,
+};
+
+/* VIDEO IOCTLS */
+
+static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ if (unlikely(f->index >= ARRAY_SIZE(formats)))
+ return -EINVAL;
+
+ strlcpy(f->description, formats[f->index].name, sizeof(f->description));
+ f->pixelformat = formats[f->index].fourcc;
+
+ return 0;
+}
+
+static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct cx25821_channel *chan = video_drvdata(file);
+
+ f->fmt.pix.width = chan->width;
+ f->fmt.pix.height = chan->height;
+ f->fmt.pix.field = chan->field;
+ f->fmt.pix.pixelformat = chan->fmt->fourcc;
+ f->fmt.pix.bytesperline = (chan->width * chan->fmt->depth) >> 3;
+ f->fmt.pix.sizeimage = chan->height * f->fmt.pix.bytesperline;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+
+ return 0;
+}
+
+static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct cx25821_channel *chan = video_drvdata(file);
+ struct cx25821_dev *dev = chan->dev;
+ const struct cx25821_fmt *fmt;
+ enum v4l2_field field = f->fmt.pix.field;
+ unsigned int maxh;
+ unsigned w;
+
+ fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
+ if (NULL == fmt)
+ return -EINVAL;
+ maxh = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
+
+ w = f->fmt.pix.width;
+ if (field != V4L2_FIELD_BOTTOM)
+ field = V4L2_FIELD_TOP;
+ if (w < 352) {
+ w = 176;
+ f->fmt.pix.height = maxh / 4;
+ } else if (w < 720) {
+ w = 352;
+ f->fmt.pix.height = maxh / 2;
+ } else {
+ w = 720;
+ f->fmt.pix.height = maxh;
+ field = V4L2_FIELD_INTERLACED;
+ }
+ f->fmt.pix.field = field;
+ f->fmt.pix.width = w;
+ 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;
+}
+
+static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct cx25821_channel *chan = video_drvdata(file);
+ struct cx25821_dev *dev = chan->dev;
+ int pix_format = PIXEL_FRMT_422;
+ int err;
+
+ err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);
+
+ if (0 != err)
+ return err;
+
+ chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
+ chan->field = f->fmt.pix.field;
+ chan->width = f->fmt.pix.width;
+ chan->height = f->fmt.pix.height;
+
+ if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
+ pix_format = PIXEL_FRMT_411;
+ else
+ pix_format = PIXEL_FRMT_422;
+
+ cx25821_set_pixel_format(dev, SRAM_CH00, pix_format);
+
+ /* check if cif resolution */
+ if (chan->width == 320 || chan->width == 352)
+ chan->use_cif_resolution = 1;
+ else
+ chan->use_cif_resolution = 0;
+
+ chan->cif_width = chan->width;
+ medusa_set_resolution(dev, chan->width, SRAM_CH00);
+ return 0;
+}
+
+static int vidioc_log_status(struct file *file, void *priv)
+{
+ struct cx25821_channel *chan = video_drvdata(file);
+ struct cx25821_dev *dev = chan->dev;
+ const struct sram_channel *sram_ch = chan->sram_channels;
+ u32 tmp = 0;
+
+ tmp = cx_read(sram_ch->dma_ctl);
+ pr_info("Video input 0 is %s\n",
+ (tmp & 0x11) ? "streaming" : "stopped");
+ return 0;
+}
+
+
+static int cx25821_vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct cx25821_channel *chan = video_drvdata(file);
+ struct cx25821_dev *dev = chan->dev;
+ const u32 cap_input = V4L2_CAP_VIDEO_CAPTURE |
+ V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
+ const u32 cap_output = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE;
+
+ strcpy(cap->driver, "cx25821");
+ strlcpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card));
+ sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
+ if (chan->id >= VID_CHANNEL_NUM)
+ cap->device_caps = cap_output;
+ else
+ cap->device_caps = cap_input;
+ cap->capabilities = cap_input | cap_output | V4L2_CAP_DEVICE_CAPS;
+ return 0;
+}
+
+static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
+{
+ struct cx25821_channel *chan = video_drvdata(file);
+
+ *tvnorms = chan->dev->tvnorm;
+ return 0;
+}
+
+static int cx25821_vidioc_s_std(struct file *file, void *priv,
+ v4l2_std_id tvnorms)
+{
+ struct cx25821_channel *chan = video_drvdata(file);
+ struct cx25821_dev *dev = chan->dev;
+
+ if (dev->tvnorm == tvnorms)
+ return 0;
+
+ dev->tvnorm = tvnorms;
+ chan->width = 720;
+ chan->height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
+
+ medusa_set_videostandard(dev);
+
+ return 0;
+}
+
+static int cx25821_vidioc_enum_input(struct file *file, void *priv,
+ struct v4l2_input *i)
+{
+ if (i->index)
+ return -EINVAL;
+
+ i->type = V4L2_INPUT_TYPE_CAMERA;
+ i->std = CX25821_NORMS;
+ strcpy(i->name, "Composite");
+ return 0;
+}
+
+static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
+{
+ *i = 0;
+ return 0;
+}
+
+static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
+{
+ return i ? -EINVAL : 0;
+}
+
+static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct cx25821_channel *chan =
+ container_of(ctrl->handler, struct cx25821_channel, hdl);
+ struct cx25821_dev *dev = chan->dev;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ medusa_set_brightness(dev, ctrl->val, chan->id);
+ break;
+ case V4L2_CID_HUE:
+ medusa_set_hue(dev, ctrl->val, chan->id);
+ break;
+ case V4L2_CID_CONTRAST:
+ medusa_set_contrast(dev, ctrl->val, chan->id);
+ break;
+ case V4L2_CID_SATURATION:
+ medusa_set_saturation(dev, ctrl->val, chan->id);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int cx25821_vidioc_enum_output(struct file *file, void *priv,
+ struct v4l2_output *o)
+{
+ if (o->index)
+ return -EINVAL;
+
+ o->type = V4L2_INPUT_TYPE_CAMERA;
+ o->std = CX25821_NORMS;
+ strcpy(o->name, "Composite");
+ return 0;
+}
+
+static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o)
+{
+ *o = 0;
+ return 0;
+}
+
+static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o)
+{
+ return o ? -EINVAL : 0;
+}
+
+static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct cx25821_channel *chan = video_drvdata(file);
+ struct cx25821_dev *dev = chan->dev;
+ const struct cx25821_fmt *fmt;
+
+ fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
+ if (NULL == fmt)
+ return -EINVAL;
+ f->fmt.pix.width = 720;
+ f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
+ f->fmt.pix.field = V4L2_FIELD_INTERLACED;
+ 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;
+}
+
+static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct cx25821_channel *chan = video_drvdata(file);
+ int err;
+
+ err = cx25821_vidioc_try_fmt_vid_out(file, priv, f);
+
+ if (0 != err)
+ return err;
+
+ chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
+ chan->field = f->fmt.pix.field;
+ chan->width = f->fmt.pix.width;
+ chan->height = f->fmt.pix.height;
+ if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
+ chan->pixel_formats = PIXEL_FRMT_411;
+ else
+ chan->pixel_formats = PIXEL_FRMT_422;
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops cx25821_ctrl_ops = {
+ .s_ctrl = cx25821_s_ctrl,
+};
+
+static const struct v4l2_file_operations video_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = vb2_fop_release,
+ .read = vb2_fop_read,
+ .poll = vb2_fop_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = vb2_fop_mmap,
+};
+
+static const struct v4l2_ioctl_ops video_ioctl_ops = {
+ .vidioc_querycap = cx25821_vidioc_querycap,
+ .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_streamon = vb2_ioctl_streamon,
+ .vidioc_streamoff = vb2_ioctl_streamoff,
+ .vidioc_g_std = cx25821_vidioc_g_std,
+ .vidioc_s_std = cx25821_vidioc_s_std,
+ .vidioc_enum_input = cx25821_vidioc_enum_input,
+ .vidioc_g_input = cx25821_vidioc_g_input,
+ .vidioc_s_input = cx25821_vidioc_s_input,
+ .vidioc_log_status = vidioc_log_status,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+static const struct video_device cx25821_video_device = {
+ .name = "cx25821-video",
+ .fops = &video_fops,
+ .release = video_device_release_empty,
+ .minor = -1,
+ .ioctl_ops = &video_ioctl_ops,
+ .tvnorms = CX25821_NORMS,
+};
+
+static const struct v4l2_file_operations video_out_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = vb2_fop_release,
+ .write = vb2_fop_write,
+ .poll = vb2_fop_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = vb2_fop_mmap,
+};
+
+static const struct v4l2_ioctl_ops video_out_ioctl_ops = {
+ .vidioc_querycap = cx25821_vidioc_querycap,
+ .vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap,
+ .vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out,
+ .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
+ .vidioc_g_std = cx25821_vidioc_g_std,
+ .vidioc_s_std = cx25821_vidioc_s_std,
+ .vidioc_enum_output = cx25821_vidioc_enum_output,
+ .vidioc_g_output = cx25821_vidioc_g_output,
+ .vidioc_s_output = cx25821_vidioc_s_output,
+ .vidioc_log_status = vidioc_log_status,
+};
+
+static const struct video_device cx25821_video_out_device = {
+ .name = "cx25821-video",
+ .fops = &video_out_fops,
+ .release = video_device_release_empty,
+ .minor = -1,
+ .ioctl_ops = &video_out_ioctl_ops,
+ .tvnorms = CX25821_NORMS,
+};
+
+void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num)
+{
+ cx_clear(PCI_INT_MSK, 1);
+
+ if (video_is_registered(&dev->channels[chan_num].vdev)) {
+ video_unregister_device(&dev->channels[chan_num].vdev);
+ v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl);
+ }
+}
+
+int cx25821_video_register(struct cx25821_dev *dev)
+{
+ int err;
+ int i;
+
+ /* initial device configuration */
+ dev->tvnorm = V4L2_STD_NTSC_M;
+
+ spin_lock_init(&dev->slock);
+
+ for (i = 0; i < MAX_VID_CAP_CHANNEL_NUM - 1; ++i) {
+ struct cx25821_channel *chan = &dev->channels[i];
+ struct video_device *vdev = &chan->vdev;
+ struct v4l2_ctrl_handler *hdl = &chan->hdl;
+ struct vb2_queue *q;
+ bool is_output = i > SRAM_CH08;
+
+ if (i == SRAM_CH08) /* audio channel */
+ continue;
+
+ if (!is_output) {
+ v4l2_ctrl_handler_init(hdl, 4);
+ v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 10000, 1, 6200);
+ v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
+ V4L2_CID_CONTRAST, 0, 10000, 1, 5000);
+ v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
+ V4L2_CID_SATURATION, 0, 10000, 1, 5000);
+ v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
+ V4L2_CID_HUE, 0, 10000, 1, 5000);
+ if (hdl->error) {
+ err = hdl->error;
+ goto fail_unreg;
+ }
+ err = v4l2_ctrl_handler_setup(hdl);
+ if (err)
+ goto fail_unreg;
+ } else {
+ chan->out = &dev->vid_out_data[i - SRAM_CH09];
+ chan->out->chan = chan;
+ }
+
+ chan->sram_channels = &cx25821_sram_channels[i];
+ chan->width = 720;
+ chan->field = V4L2_FIELD_INTERLACED;
+ if (dev->tvnorm & V4L2_STD_625_50)
+ chan->height = 576;
+ else
+ chan->height = 480;
+
+ if (chan->pixel_formats == PIXEL_FRMT_411)
+ chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_Y41P);
+ else
+ chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_YUYV);
+
+ cx_write(chan->sram_channels->int_stat, 0xffffffff);
+
+ INIT_LIST_HEAD(&chan->dma_vidq.active);
+
+ q = &chan->vidq;
+
+ q->type = is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT :
+ V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
+ q->io_modes |= is_output ? VB2_WRITE : VB2_READ;
+ q->gfp_flags = GFP_DMA32;
+ q->min_buffers_needed = 2;
+ q->drv_priv = chan;
+ q->buf_struct_size = sizeof(struct cx25821_buffer);
+ q->ops = &cx25821_video_qops;
+ q->mem_ops = &vb2_dma_sg_memops;
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ q->lock = &dev->lock;
+
+ if (!is_output) {
+ err = vb2_queue_init(q);
+ if (err < 0)
+ goto fail_unreg;
+ }
+
+ /* register v4l devices */
+ *vdev = is_output ? cx25821_video_out_device : cx25821_video_device;
+ vdev->v4l2_dev = &dev->v4l2_dev;
+ if (!is_output)
+ vdev->ctrl_handler = hdl;
+ else
+ vdev->vfl_dir = VFL_DIR_TX;
+ vdev->lock = &dev->lock;
+ vdev->queue = q;
+ snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i);
+ video_set_drvdata(vdev, chan);
+
+ err = video_register_device(vdev, VFL_TYPE_GRABBER,
+ video_nr[dev->nr]);
+
+ if (err < 0)
+ goto fail_unreg;
+ }
+
+ /* set PCI interrupt */
+ cx_set(PCI_INT_MSK, 0xff);
+
+ return 0;
+
+fail_unreg:
+ while (i >= 0)
+ cx25821_video_unregister(dev, i--);
+ return err;
+}
Code Review / kvmfornfv.git / blobdiff