diff options
author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-09-15 11:33:54 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-09-18 23:47:36 -0300 |
commit | 02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b (patch) | |
tree | de8dbf798a2867a58d2108684e1aef76ec9bbfc0 /drivers/staging/cx25821/cx25821-videoioctl.c | |
parent | 78f28b7c555359c67c2a0d23f7436e915329421e (diff) |
V4L/DVB (12730): Add conexant cx25821 driver
GIT_BRANCH=devel
GIT_AUTHOR_DATE=1252851239
GIT_AUTHOR_NAME=Palash Bandyopadhyay
GIT_AUTHOR_EMAIL=Palash.Bandyopadhyay@conexant.com
Add conexant cx25821 driver release v106 of the Athena driver.
Signed-off-by: Palash Bandyopadhyay <palash.bandyopadhyay@conexant.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/staging/cx25821/cx25821-videoioctl.c')
-rw-r--r-- | drivers/staging/cx25821/cx25821-videoioctl.c | 500 |
1 files changed, 500 insertions, 0 deletions
diff --git a/drivers/staging/cx25821/cx25821-videoioctl.c b/drivers/staging/cx25821/cx25821-videoioctl.c new file mode 100644 index 00000000000..a5363e486f7 --- /dev/null +++ b/drivers/staging/cx25821/cx25821-videoioctl.c @@ -0,0 +1,500 @@ +/* + * 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[VIDEO_IOCTL_CH]; + + /* 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[VIDEO_IOCTL_CH]); + 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 = buffer_setup, + .buf_prepare = buffer_prepare, + .buf_queue = buffer_queue, + .buf_release = buffer_release, +}; + + +static int video_open(struct file *file) +{ + int minor = video_devdata(file)->minor; + struct cx25821_dev *h, *dev = NULL; + struct cx25821_fh *fh; + struct list_head *list; + enum v4l2_buf_type type = 0; + u32 pix_format; + + lock_kernel(); + list_for_each(list, &cx25821_devlist) + { + h = list_entry(list, struct cx25821_dev, devlist); + + if (h->ioctl_dev && h->ioctl_dev->minor == minor) + { + dev = h; + type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + } + } + + if (NULL == dev) { + unlock_kernel(); + return -ENODEV; + } + + printk("open minor=%d type=%s\n", minor, v4l2_type_names[type]); + + /* allocate + initialize per filehandle data */ + fh = kzalloc(sizeof(*fh), GFP_KERNEL); + if (NULL == fh) { + unlock_kernel(); + return -ENOMEM; + } + + 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 = VIDEO_IOCTL_CH; + pix_format = 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 (res_locked(fh->dev, RESOURCE_VIDEO_IOCTL)) + 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 (res_check(fh, RESOURCE_VIDEO_IOCTL)) { + /* 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) + 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 video capture */ + if (res_check(fh, RESOURCE_VIDEO_IOCTL)) { + videobuf_queue_cancel(&fh->vidq); + res_free(dev, fh, RESOURCE_VIDEO_IOCTL); + } + + if (fh->vidq.read_buf) { + 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(!res_get(dev, fh, get_resource(fh, RESOURCE_VIDEO_IOCTL)))) + { + 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 = get_resource(fh, RESOURCE_VIDEO_IOCTL); + err = videobuf_streamoff(get_queue(fh)); + if (err < 0) + return err; + 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; + + if (fh) + { + err = v4l2_prio_check(&dev->prio, &fh->prio); + if (0 != err) + return err; + } + + dprintk(2, "%s()\n", __func__); + err = vidioc_try_fmt_vid_cap(file, priv, f); + + if (0 != err) + return err; + fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat); + fh->width = f->fmt.pix.width; + fh->height = f->fmt.pix.height; + fh->vidq.field = f->fmt.pix.field; + 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) +{ + struct cx25821_fh *fh = priv; + return videobuf_dqbuf(get_queue(fh), p, file->f_flags & O_NONBLOCK); +} + +static long video_ioctl_set(struct file *file, unsigned int cmd, unsigned long arg) +{ + struct cx25821_fh *fh = file->private_data; + struct cx25821_dev *dev = fh->dev; + struct downstream_user_struct *data_from_user; + int command; + int width = 720; + int selected_channel = 0, pix_format = 0, i = 0; + int cif_enable = 0, cif_width = 0; + u32 value = 0; + + + data_from_user = (struct downstream_user_struct *)arg; + + if( !data_from_user ) + { + printk("cx25821 in %s(): User data is INVALID. Returning.\n", __func__); + return 0; + } + + command = data_from_user->command; + + if( command != SET_VIDEO_STD && command != SET_PIXEL_FORMAT && command != ENABLE_CIF_RESOLUTION && + command != REG_READ && command != REG_WRITE && command != MEDUSA_READ && command != MEDUSA_WRITE) + { + return 0; + } + + + switch(command) + { + case SET_VIDEO_STD: + dev->tvnorm = !strcmp(data_from_user->vid_stdname,"PAL") ? V4L2_STD_PAL_BG : V4L2_STD_NTSC_M; + medusa_set_videostandard(dev); + break; + + case SET_PIXEL_FORMAT: + selected_channel = data_from_user->decoder_select; + pix_format = data_from_user->pixel_format; + + if( !(selected_channel <= 7 && selected_channel >= 0) ) + { + selected_channel -= 4; + selected_channel = selected_channel % 8; + } + + if( selected_channel >= 0 ) + cx25821_set_pixel_format( dev, selected_channel, pix_format ); + + break; + + case ENABLE_CIF_RESOLUTION: + selected_channel = data_from_user->decoder_select; + cif_enable = data_from_user->cif_resolution_enable; + cif_width = data_from_user->cif_width; + + if( cif_enable ) + { + if( dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK ) + width = 352; + else + width = (cif_width == 320 || cif_width == 352) ? cif_width : 320; + } + + if( !(selected_channel <= 7 && selected_channel >= 0) ) + { + selected_channel -= 4; + selected_channel = selected_channel % 8; + } + + + if( selected_channel <= 7 && selected_channel >= 0 ) + { + dev->use_cif_resolution[selected_channel] = cif_enable; + dev->cif_width[selected_channel] = width; + } + else + { + for( i=0; i < VID_CHANNEL_NUM; i++ ) + { + dev->use_cif_resolution[i] = cif_enable; + dev->cif_width[i] = width; + } + } + + medusa_set_resolution( dev, width, selected_channel ); + break; + case REG_READ: + data_from_user->reg_data = cx_read(data_from_user->reg_address); + break; + case REG_WRITE: + cx_write(data_from_user->reg_address, data_from_user->reg_data); + break; + case MEDUSA_READ: + value = cx25821_i2c_read(&dev->i2c_bus[0], (u16)data_from_user->reg_address, &data_from_user->reg_data); + break; + case MEDUSA_WRITE: + cx25821_i2c_write(&dev->i2c_bus[0], (u16)data_from_user->reg_address, data_from_user->reg_data); + break; + } + + return 0; +} + +static int vidioc_log_status (struct file *file, void *priv) +{ + struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; + char name[32 + 2]; + + 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); + 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 0; +} +// 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 = video_mmap, + .ioctl = video_ioctl_set, +}; + +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_reqbufs = vidioc_reqbufs, + .vidioc_querybuf = vidioc_querybuf, + .vidioc_qbuf = vidioc_qbuf, + .vidioc_dqbuf = vidioc_dqbuf, +#ifdef TUNER_FLAG + .vidioc_s_std = vidioc_s_std, + .vidioc_querystd = vidioc_querystd, +#endif + .vidioc_cropcap = vidioc_cropcap, + .vidioc_s_crop = vidioc_s_crop, + .vidioc_g_crop = vidioc_g_crop, + .vidioc_enum_input = vidioc_enum_input, + .vidioc_g_input = vidioc_g_input, + .vidioc_s_input = vidioc_s_input, + .vidioc_g_ctrl = vidioc_g_ctrl, + .vidioc_s_ctrl = vidioc_s_ctrl, + .vidioc_queryctrl = vidioc_queryctrl, + .vidioc_streamon = vidioc_streamon, + .vidioc_streamoff = vidioc_streamoff, + .vidioc_log_status = vidioc_log_status, + .vidioc_g_priority = vidioc_g_priority, + .vidioc_s_priority = vidioc_s_priority, +#ifdef CONFIG_VIDEO_V4L1_COMPAT + .vidiocgmbuf = vidiocgmbuf, +#endif +#ifdef TUNER_FLAG + .vidioc_g_tuner = vidioc_g_tuner, + .vidioc_s_tuner = vidioc_s_tuner, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, +#endif +#ifdef CONFIG_VIDEO_ADV_DEBUG + .vidioc_g_register = vidioc_g_register, + .vidioc_s_register = vidioc_s_register, +#endif +}; + +struct video_device cx25821_videoioctl_template = { + .name = "cx25821-videoioctl", + .fops = &video_fops, + .minor = -1, + .ioctl_ops = &video_ioctl_ops, + .tvnorms = CX25821_NORMS, + .current_norm = V4L2_STD_NTSC_M, +}; + + + |