| /* |
| * 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> cx23885 driver |
| * |
| * 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. |
| */ |
| |
| #include "cx25821-video.h" |
| |
| static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) |
| { |
| struct cx25821_buffer *buf = |
| container_of(vb, struct cx25821_buffer, vb); |
| struct cx25821_buffer *prev; |
| struct cx25821_fh *fh = vq->priv_data; |
| struct cx25821_dev *dev = fh->dev; |
| struct cx25821_dmaqueue *q = &dev->vidq[SRAM_CH03]; |
| |
| /* add jump to stopper */ |
| buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); |
| buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma); |
| buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */ |
| |
| dprintk(2, "jmp to stopper (0x%x)\n", buf->risc.jmp[1]); |
| |
| if (!list_empty(&q->queued)) { |
| list_add_tail(&buf->vb.queue, &q->queued); |
| buf->vb.state = VIDEOBUF_QUEUED; |
| dprintk(2, "[%p/%d] buffer_queue - append to queued\n", buf, |
| buf->vb.i); |
| |
| } else if (list_empty(&q->active)) { |
| list_add_tail(&buf->vb.queue, &q->active); |
| cx25821_start_video_dma(dev, q, buf, |
| &dev->sram_channels[SRAM_CH03]); |
| buf->vb.state = VIDEOBUF_ACTIVE; |
| buf->count = q->count++; |
| mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT); |
| dprintk(2, |
| "[%p/%d] buffer_queue - first active, buf cnt = %d, q->count = %d\n", |
| buf, buf->vb.i, buf->count, q->count); |
| } else { |
| prev = |
| list_entry(q->active.prev, struct cx25821_buffer, vb.queue); |
| if (prev->vb.width == buf->vb.width |
| && prev->vb.height == buf->vb.height |
| && prev->fmt == buf->fmt) { |
| list_add_tail(&buf->vb.queue, &q->active); |
| buf->vb.state = VIDEOBUF_ACTIVE; |
| buf->count = q->count++; |
| prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); |
| |
| /* 64 bit bits 63-32 */ |
| prev->risc.jmp[2] = cpu_to_le32(0); |
| dprintk(2, |
| "[%p/%d] buffer_queue - append to active, buf->count=%d\n", |
| buf, buf->vb.i, buf->count); |
| |
| } else { |
| list_add_tail(&buf->vb.queue, &q->queued); |
| buf->vb.state = VIDEOBUF_QUEUED; |
| dprintk(2, "[%p/%d] buffer_queue - first queued\n", buf, |
| buf->vb.i); |
| } |
| } |
| |
| if (list_empty(&q->active)) { |
| dprintk(2, "active queue empty!\n"); |
| } |
| } |
| |
| static struct videobuf_queue_ops cx25821_video_qops = { |
| .buf_setup = cx25821_buffer_setup, |
| .buf_prepare = cx25821_buffer_prepare, |
| .buf_queue = buffer_queue, |
| .buf_release = cx25821_buffer_release, |
| }; |
| |
| static int video_open(struct file *file) |
| { |
| struct video_device *vdev = video_devdata(file); |
| struct cx25821_dev *dev = video_drvdata(file); |
| struct cx25821_fh *fh; |
| enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| u32 pix_format; |
| |
| printk("open dev=%s type=%s\n", video_device_node_name(vdev), |
| v4l2_type_names[type]); |
| |
| /* allocate + initialize per filehandle data */ |
| fh = kzalloc(sizeof(*fh), GFP_KERNEL); |
| if (NULL == fh) |
| return -ENOMEM; |
| |
| lock_kernel(); |
| |
| file->private_data = fh; |
| fh->dev = dev; |
| fh->type = type; |
| fh->width = 720; |
| |
| if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK) |
| fh->height = 576; |
| else |
| fh->height = 480; |
| |
| dev->channel_opened = SRAM_CH03; |
| pix_format = |
| (dev->pixel_formats[dev->channel_opened] == |
| PIXEL_FRMT_411) ? V4L2_PIX_FMT_Y41P : V4L2_PIX_FMT_YUYV; |
| fh->fmt = format_by_fourcc(pix_format); |
| |
| v4l2_prio_open(&dev->prio, &fh->prio); |
| |
| videobuf_queue_sg_init(&fh->vidq, &cx25821_video_qops, |
| &dev->pci->dev, &dev->slock, |
| V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| V4L2_FIELD_INTERLACED, |
| sizeof(struct cx25821_buffer), fh); |
| |
| dprintk(1, "post videobuf_queue_init()\n"); |
| unlock_kernel(); |
| |
| return 0; |
| } |
| |
| static ssize_t video_read(struct file *file, char __user * data, size_t count, |
| loff_t * ppos) |
| { |
| struct cx25821_fh *fh = file->private_data; |
| |
| switch (fh->type) { |
| case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| if (cx25821_res_locked(fh->dev, RESOURCE_VIDEO3)) |
| return -EBUSY; |
| |
| return videobuf_read_one(&fh->vidq, data, count, ppos, |
| file->f_flags & O_NONBLOCK); |
| |
| default: |
| BUG(); |
| return 0; |
| } |
| } |
| |
| static unsigned int video_poll(struct file *file, |
| struct poll_table_struct *wait) |
| { |
| struct cx25821_fh *fh = file->private_data; |
| struct cx25821_buffer *buf; |
| |
| if (cx25821_res_check(fh, RESOURCE_VIDEO3)) { |
| /* streaming capture */ |
| if (list_empty(&fh->vidq.stream)) |
| return POLLERR; |
| buf = list_entry(fh->vidq.stream.next, |
| struct cx25821_buffer, vb.stream); |
| } else { |
| /* read() capture */ |
| buf = (struct cx25821_buffer *)fh->vidq.read_buf; |
| if (NULL == buf) |
| return POLLERR; |
| } |
| |
| poll_wait(file, &buf->vb.done, wait); |
| if (buf->vb.state == VIDEOBUF_DONE || buf->vb.state == VIDEOBUF_ERROR) { |
| if (buf->vb.state == VIDEOBUF_DONE) { |
| struct cx25821_dev *dev = fh->dev; |
| |
| if (dev && dev->use_cif_resolution[SRAM_CH03]) { |
| u8 cam_id = *((char *)buf->vb.baddr + 3); |
| memcpy((char *)buf->vb.baddr, |
| (char *)buf->vb.baddr + (fh->width * 2), |
| (fh->width * 2)); |
| *((char *)buf->vb.baddr + 3) = cam_id; |
| } |
| } |
| |
| return POLLIN | POLLRDNORM; |
| } |
| |
| return 0; |
| } |
| |
| static int video_release(struct file *file) |
| { |
| struct cx25821_fh *fh = file->private_data; |
| struct cx25821_dev *dev = fh->dev; |
| |
| //stop the risc engine and fifo |
| cx_write(channel3->dma_ctl, 0); /* FIFO and RISC disable */ |
| |
| /* stop video capture */ |
| if (cx25821_res_check(fh, RESOURCE_VIDEO3)) { |
| videobuf_queue_cancel(&fh->vidq); |
| cx25821_res_free(dev, fh, RESOURCE_VIDEO3); |
| } |
| |
| if (fh->vidq.read_buf) { |
| cx25821_buffer_release(&fh->vidq, fh->vidq.read_buf); |
| kfree(fh->vidq.read_buf); |
| } |
| |
| videobuf_mmap_free(&fh->vidq); |
| |
| v4l2_prio_close(&dev->prio, fh->prio); |
| file->private_data = NULL; |
| kfree(fh); |
| |
| return 0; |
| } |
| |
| static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) |
| { |
| struct cx25821_fh *fh = priv; |
| struct cx25821_dev *dev = fh->dev; |
| |
| if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)) { |
| return -EINVAL; |
| } |
| |
| if (unlikely(i != fh->type)) { |
| return -EINVAL; |
| } |
| |
| if (unlikely(!cx25821_res_get(dev, fh, cx25821_get_resource(fh, RESOURCE_VIDEO3)))) { |
| return -EBUSY; |
| } |
| |
| return videobuf_streamon(get_queue(fh)); |
| } |
| |
| static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) |
| { |
| struct cx25821_fh *fh = priv; |
| struct cx25821_dev *dev = fh->dev; |
| int err, res; |
| |
| if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| if (i != fh->type) |
| return -EINVAL; |
| |
| res = cx25821_get_resource(fh, RESOURCE_VIDEO3); |
| err = videobuf_streamoff(get_queue(fh)); |
| if (err < 0) |
| return err; |
| cx25821_res_free(dev, fh, res); |
| return 0; |
| } |
| |
| static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
| struct v4l2_format *f) |
| { |
| struct cx25821_fh *fh = priv; |
| struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; |
| int err; |
| int pix_format = 0; |
| |
| if (fh) { |
| err = v4l2_prio_check(&dev->prio, fh->prio); |
| if (0 != err) |
| return err; |
| } |
| |
| dprintk(2, "%s()\n", __func__); |
| err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f); |
| |
| if (0 != err) |
| return err; |
| |
| fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat); |
| fh->vidq.field = f->fmt.pix.field; |
| |
| // check if width and height is valid based on set standard |
| if (cx25821_is_valid_width(f->fmt.pix.width, dev->tvnorm)) { |
| fh->width = f->fmt.pix.width; |
| } |
| |
| if (cx25821_is_valid_height(f->fmt.pix.height, dev->tvnorm)) { |
| fh->height = f->fmt.pix.height; |
| } |
| |
| if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P) |
| pix_format = PIXEL_FRMT_411; |
| else if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) |
| pix_format = PIXEL_FRMT_422; |
| else |
| return -EINVAL; |
| |
| cx25821_set_pixel_format(dev, SRAM_CH03, pix_format); |
| |
| // check if cif resolution |
| if (fh->width == 320 || fh->width == 352) { |
| dev->use_cif_resolution[SRAM_CH03] = 1; |
| } else { |
| dev->use_cif_resolution[SRAM_CH03] = 0; |
| } |
| dev->cif_width[SRAM_CH03] = fh->width; |
| medusa_set_resolution(dev, fh->width, SRAM_CH03); |
| |
| dprintk(2, "%s() width=%d height=%d field=%d\n", __func__, fh->width, |
| fh->height, fh->vidq.field); |
| cx25821_call_all(dev, video, s_fmt, f); |
| |
| return 0; |
| } |
| |
| static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
| { |
| int ret_val = 0; |
| struct cx25821_fh *fh = priv; |
| struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; |
| |
| ret_val = videobuf_dqbuf(get_queue(fh), p, file->f_flags & O_NONBLOCK); |
| |
| p->sequence = dev->vidq[SRAM_CH03].count; |
| |
| return ret_val; |
| } |
| |
| static int vidioc_log_status(struct file *file, void *priv) |
| { |
| struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; |
| char name[32 + 2]; |
| |
| struct sram_channel *sram_ch = &dev->sram_channels[SRAM_CH03]; |
| u32 tmp = 0; |
| |
| snprintf(name, sizeof(name), "%s/2", dev->name); |
| printk(KERN_INFO "%s/2: ============ START LOG STATUS ============\n", |
| dev->name); |
| cx25821_call_all(dev, core, log_status); |
| |
| tmp = cx_read(sram_ch->dma_ctl); |
| printk(KERN_INFO "Video input 3 is %s\n", |
| (tmp & 0x11) ? "streaming" : "stopped"); |
| printk(KERN_INFO "%s/2: ============= END LOG STATUS =============\n", |
| dev->name); |
| return 0; |
| } |
| |
| static int vidioc_s_ctrl(struct file *file, void *priv, |
| struct v4l2_control *ctl) |
| { |
| struct cx25821_fh *fh = priv; |
| struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; |
| int err; |
| |
| if (fh) { |
| err = v4l2_prio_check(&dev->prio, fh->prio); |
| if (0 != err) |
| return err; |
| } |
| |
| return cx25821_set_control(dev, ctl, SRAM_CH03); |
| } |
| |
| // exported stuff |
| static const struct v4l2_file_operations video_fops = { |
| .owner = THIS_MODULE, |
| .open = video_open, |
| .release = video_release, |
| .read = video_read, |
| .poll = video_poll, |
| .mmap = cx25821_video_mmap, |
| .ioctl = video_ioctl2, |
| }; |
| |
| 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 = cx25821_vidioc_reqbufs, |
| .vidioc_querybuf = cx25821_vidioc_querybuf, |
| .vidioc_qbuf = cx25821_vidioc_qbuf, |
| .vidioc_dqbuf = vidioc_dqbuf, |
| #ifdef TUNER_FLAG |
| .vidioc_s_std = cx25821_vidioc_s_std, |
| .vidioc_querystd = cx25821_vidioc_querystd, |
| #endif |
| .vidioc_cropcap = cx25821_vidioc_cropcap, |
| .vidioc_s_crop = cx25821_vidioc_s_crop, |
| .vidioc_g_crop = cx25821_vidioc_g_crop, |
| .vidioc_enum_input = cx25821_vidioc_enum_input, |
| .vidioc_g_input = cx25821_vidioc_g_input, |
| .vidioc_s_input = cx25821_vidioc_s_input, |
| .vidioc_g_ctrl = cx25821_vidioc_g_ctrl, |
| .vidioc_s_ctrl = vidioc_s_ctrl, |
| .vidioc_queryctrl = cx25821_vidioc_queryctrl, |
| .vidioc_streamon = vidioc_streamon, |
| .vidioc_streamoff = vidioc_streamoff, |
| .vidioc_log_status = vidioc_log_status, |
| .vidioc_g_priority = cx25821_vidioc_g_priority, |
| .vidioc_s_priority = cx25821_vidioc_s_priority, |
| #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| .vidiocgmbuf = cx25821_vidiocgmbuf, |
| #endif |
| #ifdef TUNER_FLAG |
| .vidioc_g_tuner = cx25821_vidioc_g_tuner, |
| .vidioc_s_tuner = cx25821_vidioc_s_tuner, |
| .vidioc_g_frequency = cx25821_vidioc_g_frequency, |
| .vidioc_s_frequency = cx25821_vidioc_s_frequency, |
| #endif |
| #ifdef CONFIG_VIDEO_ADV_DEBUG |
| .vidioc_g_register = cx25821_vidioc_g_register, |
| .vidioc_s_register = cx25821_vidioc_s_register, |
| #endif |
| }; |
| |
| struct video_device cx25821_video_template3 = { |
| .name = "cx25821-video", |
| .fops = &video_fops, |
| .ioctl_ops = &video_ioctl_ops, |
| .tvnorms = CX25821_NORMS, |
| .current_norm = V4L2_STD_NTSC_M, |
| }; |