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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/media/pci/cx25821/cx25821-video.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/media/pci/cx25821/cx25821-video.c')
-rw-r--r-- | drivers/media/pci/cx25821/cx25821-video.c | 776 |
1 files changed, 776 insertions, 0 deletions
diff --git a/drivers/media/pci/cx25821/cx25821-video.c b/drivers/media/pci/cx25821/cx25821-video.c new file mode 100644 index 000000000..1b80c990c --- /dev/null +++ b/drivers/media/pci/cx25821/cx25821-video.c @@ -0,0 +1,776 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * 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> + */ + +#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[] = { + { + .fourcc = V4L2_PIX_FMT_Y41P, + .depth = 12, + .flags = FORMAT_FLAGS_PACKED, + }, { + .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); + + buf->vb.vb2_buf.timestamp = ktime_get_ns(); + buf->vb.sequence = dmaq->count++; + list_del(&buf->queue); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); + } + spin_unlock(&dev->slock); + handled++; + } + return handled; +} + +static int cx25821_queue_setup(struct vb2_queue *q, + unsigned int *num_buffers, unsigned int *num_planes, + unsigned int sizes[], struct device *alloc_devs[]) +{ + struct cx25821_channel *chan = q->drv_priv; + unsigned size = (chan->fmt->depth * chan->width * chan->height) >> 3; + + if (*num_planes) + return sizes[0] < size ? -EINVAL : 0; + + *num_planes = 1; + sizes[0] = size; + return 0; +} + +static int cx25821_buffer_prepare(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct cx25821_channel *chan = vb->vb2_queue->drv_priv; + struct cx25821_dev *dev = chan->dev; + struct cx25821_buffer *buf = + container_of(vbuf, 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.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 0x%08x - dma=0x%08lx\n", + buf, buf->vb.vb2_buf.index, chan->width, chan->height, + chan->fmt->depth, chan->fmt->fourcc, + (unsigned long)buf->risc.dma); + + return ret; +} + +static void cx25821_buffer_finish(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct cx25821_buffer *buf = + container_of(vbuf, 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 vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct cx25821_buffer *buf = + container_of(vbuf, 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, VB2_BUF_STATE_ERROR); + } + spin_unlock_irqrestore(&dev->slock, flags); +} + +static const 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; + + 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; + + strscpy(cap->driver, "cx25821", sizeof(cap->driver)); + strscpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card)); + sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci)); + cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT | + V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | + 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; + strscpy(i->name, "Composite", sizeof(i->name)); + 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; + strscpy(o->name, "Composite", sizeof(o->name)); + 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, + .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | + V4L2_CAP_STREAMING, +}; + +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, + .device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE, +}; + +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; + q->dev = &dev->pci->dev; + + 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_VIDEO, + 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; +} |