mirror of https://gitee.com/openkylin/linux.git
894 lines
21 KiB
C
894 lines
21 KiB
C
/*
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* timblogiw.c timberdale FPGA LogiWin Video In driver
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* Copyright (c) 2009-2010 Intel Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* Supports:
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* Timberdale FPGA LogiWin Video In
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*/
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#include <linux/version.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/dmaengine.h>
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#include <linux/scatterlist.h>
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#include <linux/i2c.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-device.h>
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#include <media/videobuf-dma-contig.h>
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#include <media/timb_video.h>
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#define DRIVER_NAME "timb-video"
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#define TIMBLOGIWIN_NAME "Timberdale Video-In"
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#define TIMBLOGIW_VERSION_CODE 0x04
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#define TIMBLOGIW_LINES_PER_DESC 44
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#define TIMBLOGIW_MAX_VIDEO_MEM 16
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#define TIMBLOGIW_HAS_DECODER(lw) (lw->pdata.encoder.module_name)
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struct timblogiw {
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struct video_device video_dev;
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struct v4l2_device v4l2_dev; /* mutual exclusion */
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struct mutex lock;
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struct device *dev;
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struct timb_video_platform_data pdata;
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struct v4l2_subdev *sd_enc; /* encoder */
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bool opened;
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};
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struct timblogiw_tvnorm {
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v4l2_std_id std;
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u16 width;
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u16 height;
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u8 fps;
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};
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struct timblogiw_fh {
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struct videobuf_queue vb_vidq;
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struct timblogiw_tvnorm const *cur_norm;
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struct list_head capture;
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struct dma_chan *chan;
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spinlock_t queue_lock; /* mutual exclusion */
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unsigned int frame_count;
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};
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struct timblogiw_buffer {
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/* common v4l buffer stuff -- must be first */
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struct videobuf_buffer vb;
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struct scatterlist sg[16];
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dma_cookie_t cookie;
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struct timblogiw_fh *fh;
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};
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const struct timblogiw_tvnorm timblogiw_tvnorms[] = {
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{
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.std = V4L2_STD_PAL,
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.width = 720,
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.height = 576,
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.fps = 25
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},
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{
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.std = V4L2_STD_NTSC,
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.width = 720,
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.height = 480,
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.fps = 30
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}
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};
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static int timblogiw_bytes_per_line(const struct timblogiw_tvnorm *norm)
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{
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return norm->width * 2;
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}
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static int timblogiw_frame_size(const struct timblogiw_tvnorm *norm)
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{
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return norm->height * timblogiw_bytes_per_line(norm);
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}
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static const struct timblogiw_tvnorm *timblogiw_get_norm(const v4l2_std_id std)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(timblogiw_tvnorms); i++)
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if (timblogiw_tvnorms[i].std & std)
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return timblogiw_tvnorms + i;
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/* default to first element */
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return timblogiw_tvnorms;
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}
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static void timblogiw_dma_cb(void *data)
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{
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struct timblogiw_buffer *buf = data;
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struct timblogiw_fh *fh = buf->fh;
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struct videobuf_buffer *vb = &buf->vb;
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spin_lock(&fh->queue_lock);
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/* mark the transfer done */
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buf->cookie = -1;
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fh->frame_count++;
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if (vb->state != VIDEOBUF_ERROR) {
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list_del(&vb->queue);
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do_gettimeofday(&vb->ts);
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vb->field_count = fh->frame_count * 2;
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vb->state = VIDEOBUF_DONE;
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wake_up(&vb->done);
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}
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if (!list_empty(&fh->capture)) {
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vb = list_entry(fh->capture.next, struct videobuf_buffer,
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queue);
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vb->state = VIDEOBUF_ACTIVE;
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}
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spin_unlock(&fh->queue_lock);
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}
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static bool timblogiw_dma_filter_fn(struct dma_chan *chan, void *filter_param)
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{
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return chan->chan_id == (uintptr_t)filter_param;
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}
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/* IOCTL functions */
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static int timblogiw_g_fmt(struct file *file, void *priv,
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struct v4l2_format *format)
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{
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struct video_device *vdev = video_devdata(file);
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struct timblogiw *lw = video_get_drvdata(vdev);
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struct timblogiw_fh *fh = priv;
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dev_dbg(&vdev->dev, "%s entry\n", __func__);
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if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
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return -EINVAL;
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mutex_lock(&lw->lock);
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format->fmt.pix.width = fh->cur_norm->width;
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format->fmt.pix.height = fh->cur_norm->height;
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format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
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format->fmt.pix.bytesperline = timblogiw_bytes_per_line(fh->cur_norm);
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format->fmt.pix.sizeimage = timblogiw_frame_size(fh->cur_norm);
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format->fmt.pix.field = V4L2_FIELD_NONE;
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mutex_unlock(&lw->lock);
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return 0;
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}
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static int timblogiw_try_fmt(struct file *file, void *priv,
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struct v4l2_format *format)
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{
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struct video_device *vdev = video_devdata(file);
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struct v4l2_pix_format *pix = &format->fmt.pix;
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dev_dbg(&vdev->dev,
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"%s - width=%d, height=%d, pixelformat=%d, field=%d\n"
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"bytes per line %d, size image: %d, colorspace: %d\n",
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__func__,
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pix->width, pix->height, pix->pixelformat, pix->field,
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pix->bytesperline, pix->sizeimage, pix->colorspace);
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if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
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return -EINVAL;
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if (pix->field != V4L2_FIELD_NONE)
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return -EINVAL;
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if (pix->pixelformat != V4L2_PIX_FMT_UYVY)
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return -EINVAL;
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return 0;
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}
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static int timblogiw_s_fmt(struct file *file, void *priv,
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struct v4l2_format *format)
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{
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struct video_device *vdev = video_devdata(file);
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struct timblogiw *lw = video_get_drvdata(vdev);
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struct timblogiw_fh *fh = priv;
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struct v4l2_pix_format *pix = &format->fmt.pix;
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int err;
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mutex_lock(&lw->lock);
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err = timblogiw_try_fmt(file, priv, format);
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if (err)
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goto out;
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if (videobuf_queue_is_busy(&fh->vb_vidq)) {
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dev_err(&vdev->dev, "%s queue busy\n", __func__);
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err = -EBUSY;
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goto out;
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}
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pix->width = fh->cur_norm->width;
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pix->height = fh->cur_norm->height;
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out:
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mutex_unlock(&lw->lock);
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return err;
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}
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static int timblogiw_querycap(struct file *file, void *priv,
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struct v4l2_capability *cap)
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{
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struct video_device *vdev = video_devdata(file);
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dev_dbg(&vdev->dev, "%s: Entry\n", __func__);
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memset(cap, 0, sizeof(*cap));
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strncpy(cap->card, TIMBLOGIWIN_NAME, sizeof(cap->card)-1);
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strncpy(cap->driver, DRIVER_NAME, sizeof(cap->driver) - 1);
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strlcpy(cap->bus_info, vdev->name, sizeof(cap->bus_info));
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cap->version = TIMBLOGIW_VERSION_CODE;
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cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
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V4L2_CAP_READWRITE;
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return 0;
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}
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static int timblogiw_enum_fmt(struct file *file, void *priv,
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struct v4l2_fmtdesc *fmt)
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{
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struct video_device *vdev = video_devdata(file);
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dev_dbg(&vdev->dev, "%s, index: %d\n", __func__, fmt->index);
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if (fmt->index != 0)
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return -EINVAL;
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memset(fmt, 0, sizeof(*fmt));
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fmt->index = 0;
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fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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strncpy(fmt->description, "4:2:2, packed, YUYV",
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sizeof(fmt->description)-1);
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fmt->pixelformat = V4L2_PIX_FMT_UYVY;
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return 0;
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}
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static int timblogiw_g_parm(struct file *file, void *priv,
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struct v4l2_streamparm *sp)
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{
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struct timblogiw_fh *fh = priv;
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struct v4l2_captureparm *cp = &sp->parm.capture;
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cp->capability = V4L2_CAP_TIMEPERFRAME;
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cp->timeperframe.numerator = 1;
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cp->timeperframe.denominator = fh->cur_norm->fps;
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return 0;
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}
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static int timblogiw_reqbufs(struct file *file, void *priv,
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struct v4l2_requestbuffers *rb)
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{
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struct video_device *vdev = video_devdata(file);
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struct timblogiw_fh *fh = priv;
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dev_dbg(&vdev->dev, "%s: entry\n", __func__);
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return videobuf_reqbufs(&fh->vb_vidq, rb);
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}
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static int timblogiw_querybuf(struct file *file, void *priv,
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struct v4l2_buffer *b)
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{
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struct video_device *vdev = video_devdata(file);
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struct timblogiw_fh *fh = priv;
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dev_dbg(&vdev->dev, "%s: entry\n", __func__);
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return videobuf_querybuf(&fh->vb_vidq, b);
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}
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static int timblogiw_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
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{
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struct video_device *vdev = video_devdata(file);
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struct timblogiw_fh *fh = priv;
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dev_dbg(&vdev->dev, "%s: entry\n", __func__);
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return videobuf_qbuf(&fh->vb_vidq, b);
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}
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static int timblogiw_dqbuf(struct file *file, void *priv,
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struct v4l2_buffer *b)
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{
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struct video_device *vdev = video_devdata(file);
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struct timblogiw_fh *fh = priv;
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dev_dbg(&vdev->dev, "%s: entry\n", __func__);
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return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
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}
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static int timblogiw_g_std(struct file *file, void *priv, v4l2_std_id *std)
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{
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struct video_device *vdev = video_devdata(file);
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struct timblogiw_fh *fh = priv;
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dev_dbg(&vdev->dev, "%s: entry\n", __func__);
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*std = fh->cur_norm->std;
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return 0;
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}
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static int timblogiw_s_std(struct file *file, void *priv, v4l2_std_id *std)
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{
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struct video_device *vdev = video_devdata(file);
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struct timblogiw *lw = video_get_drvdata(vdev);
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struct timblogiw_fh *fh = priv;
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int err = 0;
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dev_dbg(&vdev->dev, "%s: entry\n", __func__);
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mutex_lock(&lw->lock);
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if (TIMBLOGIW_HAS_DECODER(lw))
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err = v4l2_subdev_call(lw->sd_enc, core, s_std, *std);
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if (!err)
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fh->cur_norm = timblogiw_get_norm(*std);
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mutex_unlock(&lw->lock);
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return err;
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}
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static int timblogiw_enuminput(struct file *file, void *priv,
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struct v4l2_input *inp)
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{
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struct video_device *vdev = video_devdata(file);
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int i;
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dev_dbg(&vdev->dev, "%s: Entry\n", __func__);
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if (inp->index != 0)
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return -EINVAL;
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inp->index = 0;
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strncpy(inp->name, "Timb input 1", sizeof(inp->name) - 1);
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inp->type = V4L2_INPUT_TYPE_CAMERA;
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inp->std = 0;
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for (i = 0; i < ARRAY_SIZE(timblogiw_tvnorms); i++)
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inp->std |= timblogiw_tvnorms[i].std;
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return 0;
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}
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static int timblogiw_g_input(struct file *file, void *priv,
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unsigned int *input)
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{
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struct video_device *vdev = video_devdata(file);
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dev_dbg(&vdev->dev, "%s: Entry\n", __func__);
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*input = 0;
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return 0;
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}
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static int timblogiw_s_input(struct file *file, void *priv, unsigned int input)
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{
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struct video_device *vdev = video_devdata(file);
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dev_dbg(&vdev->dev, "%s: Entry\n", __func__);
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if (input != 0)
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return -EINVAL;
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return 0;
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}
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static int timblogiw_streamon(struct file *file, void *priv, unsigned int type)
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{
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struct video_device *vdev = video_devdata(file);
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struct timblogiw_fh *fh = priv;
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dev_dbg(&vdev->dev, "%s: entry\n", __func__);
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if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
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dev_dbg(&vdev->dev, "%s - No capture device\n", __func__);
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return -EINVAL;
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}
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fh->frame_count = 0;
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return videobuf_streamon(&fh->vb_vidq);
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}
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static int timblogiw_streamoff(struct file *file, void *priv,
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unsigned int type)
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{
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struct video_device *vdev = video_devdata(file);
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struct timblogiw_fh *fh = priv;
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dev_dbg(&vdev->dev, "%s entry\n", __func__);
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if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
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return -EINVAL;
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return videobuf_streamoff(&fh->vb_vidq);
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}
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static int timblogiw_querystd(struct file *file, void *priv, v4l2_std_id *std)
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{
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struct video_device *vdev = video_devdata(file);
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struct timblogiw *lw = video_get_drvdata(vdev);
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struct timblogiw_fh *fh = priv;
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dev_dbg(&vdev->dev, "%s entry\n", __func__);
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if (TIMBLOGIW_HAS_DECODER(lw))
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return v4l2_subdev_call(lw->sd_enc, video, querystd, std);
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else {
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*std = fh->cur_norm->std;
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return 0;
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}
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}
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static int timblogiw_enum_framesizes(struct file *file, void *priv,
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struct v4l2_frmsizeenum *fsize)
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{
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struct video_device *vdev = video_devdata(file);
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struct timblogiw_fh *fh = priv;
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dev_dbg(&vdev->dev, "%s - index: %d, format: %d\n", __func__,
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fsize->index, fsize->pixel_format);
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if ((fsize->index != 0) ||
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(fsize->pixel_format != V4L2_PIX_FMT_UYVY))
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return -EINVAL;
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fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
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fsize->discrete.width = fh->cur_norm->width;
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fsize->discrete.height = fh->cur_norm->height;
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return 0;
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}
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/* Video buffer functions */
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static int buffer_setup(struct videobuf_queue *vq, unsigned int *count,
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unsigned int *size)
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{
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struct timblogiw_fh *fh = vq->priv_data;
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*size = timblogiw_frame_size(fh->cur_norm);
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if (!*count)
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*count = 32;
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while (*size * *count > TIMBLOGIW_MAX_VIDEO_MEM * 1024 * 1024)
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(*count)--;
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return 0;
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}
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static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
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enum v4l2_field field)
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{
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struct timblogiw_fh *fh = vq->priv_data;
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struct timblogiw_buffer *buf = container_of(vb, struct timblogiw_buffer,
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vb);
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unsigned int data_size = timblogiw_frame_size(fh->cur_norm);
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int err = 0;
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if (vb->baddr && vb->bsize < data_size)
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/* User provided buffer, but it is too small */
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return -ENOMEM;
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vb->size = data_size;
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vb->width = fh->cur_norm->width;
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vb->height = fh->cur_norm->height;
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vb->field = field;
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if (vb->state == VIDEOBUF_NEEDS_INIT) {
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int i;
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unsigned int size;
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unsigned int bytes_per_desc = TIMBLOGIW_LINES_PER_DESC *
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timblogiw_bytes_per_line(fh->cur_norm);
|
|
dma_addr_t addr;
|
|
|
|
sg_init_table(buf->sg, ARRAY_SIZE(buf->sg));
|
|
|
|
err = videobuf_iolock(vq, vb, NULL);
|
|
if (err)
|
|
goto err;
|
|
|
|
addr = videobuf_to_dma_contig(vb);
|
|
for (i = 0, size = 0; size < data_size; i++) {
|
|
sg_dma_address(buf->sg + i) = addr + size;
|
|
size += bytes_per_desc;
|
|
sg_dma_len(buf->sg + i) = (size > data_size) ?
|
|
(bytes_per_desc - (size - data_size)) :
|
|
bytes_per_desc;
|
|
}
|
|
|
|
vb->state = VIDEOBUF_PREPARED;
|
|
buf->cookie = -1;
|
|
buf->fh = fh;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err:
|
|
videobuf_dma_contig_free(vq, vb);
|
|
vb->state = VIDEOBUF_NEEDS_INIT;
|
|
return err;
|
|
}
|
|
|
|
static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
|
|
{
|
|
struct timblogiw_fh *fh = vq->priv_data;
|
|
struct timblogiw_buffer *buf = container_of(vb, struct timblogiw_buffer,
|
|
vb);
|
|
struct dma_async_tx_descriptor *desc;
|
|
int sg_elems;
|
|
int bytes_per_desc = TIMBLOGIW_LINES_PER_DESC *
|
|
timblogiw_bytes_per_line(fh->cur_norm);
|
|
|
|
sg_elems = timblogiw_frame_size(fh->cur_norm) / bytes_per_desc;
|
|
sg_elems +=
|
|
(timblogiw_frame_size(fh->cur_norm) % bytes_per_desc) ? 1 : 0;
|
|
|
|
if (list_empty(&fh->capture))
|
|
vb->state = VIDEOBUF_ACTIVE;
|
|
else
|
|
vb->state = VIDEOBUF_QUEUED;
|
|
|
|
list_add_tail(&vb->queue, &fh->capture);
|
|
|
|
spin_unlock_irq(&fh->queue_lock);
|
|
|
|
desc = fh->chan->device->device_prep_slave_sg(fh->chan,
|
|
buf->sg, sg_elems, DMA_FROM_DEVICE,
|
|
DMA_PREP_INTERRUPT | DMA_COMPL_SKIP_SRC_UNMAP);
|
|
if (!desc) {
|
|
spin_lock_irq(&fh->queue_lock);
|
|
list_del_init(&vb->queue);
|
|
vb->state = VIDEOBUF_PREPARED;
|
|
return;
|
|
}
|
|
|
|
desc->callback_param = buf;
|
|
desc->callback = timblogiw_dma_cb;
|
|
|
|
buf->cookie = desc->tx_submit(desc);
|
|
|
|
spin_lock_irq(&fh->queue_lock);
|
|
}
|
|
|
|
static void buffer_release(struct videobuf_queue *vq,
|
|
struct videobuf_buffer *vb)
|
|
{
|
|
struct timblogiw_fh *fh = vq->priv_data;
|
|
struct timblogiw_buffer *buf = container_of(vb, struct timblogiw_buffer,
|
|
vb);
|
|
|
|
videobuf_waiton(vq, vb, 0, 0);
|
|
if (buf->cookie >= 0)
|
|
dma_sync_wait(fh->chan, buf->cookie);
|
|
|
|
videobuf_dma_contig_free(vq, vb);
|
|
vb->state = VIDEOBUF_NEEDS_INIT;
|
|
}
|
|
|
|
static struct videobuf_queue_ops timblogiw_video_qops = {
|
|
.buf_setup = buffer_setup,
|
|
.buf_prepare = buffer_prepare,
|
|
.buf_queue = buffer_queue,
|
|
.buf_release = buffer_release,
|
|
};
|
|
|
|
/* Device Operations functions */
|
|
|
|
static int timblogiw_open(struct file *file)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct timblogiw *lw = video_get_drvdata(vdev);
|
|
struct timblogiw_fh *fh;
|
|
v4l2_std_id std;
|
|
dma_cap_mask_t mask;
|
|
int err = 0;
|
|
|
|
dev_dbg(&vdev->dev, "%s: entry\n", __func__);
|
|
|
|
mutex_lock(&lw->lock);
|
|
if (lw->opened) {
|
|
err = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
if (TIMBLOGIW_HAS_DECODER(lw) && !lw->sd_enc) {
|
|
struct i2c_adapter *adapt;
|
|
|
|
/* find the video decoder */
|
|
adapt = i2c_get_adapter(lw->pdata.i2c_adapter);
|
|
if (!adapt) {
|
|
dev_err(&vdev->dev, "No I2C bus #%d\n",
|
|
lw->pdata.i2c_adapter);
|
|
err = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
/* now find the encoder */
|
|
lw->sd_enc = v4l2_i2c_new_subdev_board(&lw->v4l2_dev, adapt,
|
|
lw->pdata.encoder.info, NULL);
|
|
|
|
i2c_put_adapter(adapt);
|
|
|
|
if (!lw->sd_enc) {
|
|
dev_err(&vdev->dev, "Failed to get encoder: %s\n",
|
|
lw->pdata.encoder.module_name);
|
|
err = -ENODEV;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
fh = kzalloc(sizeof(*fh), GFP_KERNEL);
|
|
if (!fh) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
fh->cur_norm = timblogiw_tvnorms;
|
|
timblogiw_querystd(file, fh, &std);
|
|
fh->cur_norm = timblogiw_get_norm(std);
|
|
|
|
INIT_LIST_HEAD(&fh->capture);
|
|
spin_lock_init(&fh->queue_lock);
|
|
|
|
dma_cap_zero(mask);
|
|
dma_cap_set(DMA_SLAVE, mask);
|
|
dma_cap_set(DMA_PRIVATE, mask);
|
|
|
|
/* find the DMA channel */
|
|
fh->chan = dma_request_channel(mask, timblogiw_dma_filter_fn,
|
|
(void *)(uintptr_t)lw->pdata.dma_channel);
|
|
if (!fh->chan) {
|
|
dev_err(&vdev->dev, "Failed to get DMA channel\n");
|
|
kfree(fh);
|
|
err = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
file->private_data = fh;
|
|
videobuf_queue_dma_contig_init(&fh->vb_vidq,
|
|
&timblogiw_video_qops, lw->dev, &fh->queue_lock,
|
|
V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_NONE,
|
|
sizeof(struct timblogiw_buffer), fh, NULL);
|
|
|
|
lw->opened = true;
|
|
out:
|
|
mutex_unlock(&lw->lock);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int timblogiw_close(struct file *file)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct timblogiw *lw = video_get_drvdata(vdev);
|
|
struct timblogiw_fh *fh = file->private_data;
|
|
|
|
dev_dbg(&vdev->dev, "%s: Entry\n", __func__);
|
|
|
|
videobuf_stop(&fh->vb_vidq);
|
|
videobuf_mmap_free(&fh->vb_vidq);
|
|
|
|
dma_release_channel(fh->chan);
|
|
|
|
kfree(fh);
|
|
|
|
mutex_lock(&lw->lock);
|
|
lw->opened = false;
|
|
mutex_unlock(&lw->lock);
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t timblogiw_read(struct file *file, char __user *data,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct timblogiw_fh *fh = file->private_data;
|
|
|
|
dev_dbg(&vdev->dev, "%s: entry\n", __func__);
|
|
|
|
return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0,
|
|
file->f_flags & O_NONBLOCK);
|
|
}
|
|
|
|
static unsigned int timblogiw_poll(struct file *file,
|
|
struct poll_table_struct *wait)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct timblogiw_fh *fh = file->private_data;
|
|
|
|
dev_dbg(&vdev->dev, "%s: entry\n", __func__);
|
|
|
|
return videobuf_poll_stream(file, &fh->vb_vidq, wait);
|
|
}
|
|
|
|
static int timblogiw_mmap(struct file *file, struct vm_area_struct *vma)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct timblogiw_fh *fh = file->private_data;
|
|
|
|
dev_dbg(&vdev->dev, "%s: entry\n", __func__);
|
|
|
|
return videobuf_mmap_mapper(&fh->vb_vidq, vma);
|
|
}
|
|
|
|
/* Platform device functions */
|
|
|
|
static __devinitconst struct v4l2_ioctl_ops timblogiw_ioctl_ops = {
|
|
.vidioc_querycap = timblogiw_querycap,
|
|
.vidioc_enum_fmt_vid_cap = timblogiw_enum_fmt,
|
|
.vidioc_g_fmt_vid_cap = timblogiw_g_fmt,
|
|
.vidioc_try_fmt_vid_cap = timblogiw_try_fmt,
|
|
.vidioc_s_fmt_vid_cap = timblogiw_s_fmt,
|
|
.vidioc_g_parm = timblogiw_g_parm,
|
|
.vidioc_reqbufs = timblogiw_reqbufs,
|
|
.vidioc_querybuf = timblogiw_querybuf,
|
|
.vidioc_qbuf = timblogiw_qbuf,
|
|
.vidioc_dqbuf = timblogiw_dqbuf,
|
|
.vidioc_g_std = timblogiw_g_std,
|
|
.vidioc_s_std = timblogiw_s_std,
|
|
.vidioc_enum_input = timblogiw_enuminput,
|
|
.vidioc_g_input = timblogiw_g_input,
|
|
.vidioc_s_input = timblogiw_s_input,
|
|
.vidioc_streamon = timblogiw_streamon,
|
|
.vidioc_streamoff = timblogiw_streamoff,
|
|
.vidioc_querystd = timblogiw_querystd,
|
|
.vidioc_enum_framesizes = timblogiw_enum_framesizes,
|
|
};
|
|
|
|
static __devinitconst struct v4l2_file_operations timblogiw_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = timblogiw_open,
|
|
.release = timblogiw_close,
|
|
.unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
|
|
.mmap = timblogiw_mmap,
|
|
.read = timblogiw_read,
|
|
.poll = timblogiw_poll,
|
|
};
|
|
|
|
static __devinitconst struct video_device timblogiw_template = {
|
|
.name = TIMBLOGIWIN_NAME,
|
|
.fops = &timblogiw_fops,
|
|
.ioctl_ops = &timblogiw_ioctl_ops,
|
|
.release = video_device_release_empty,
|
|
.minor = -1,
|
|
.tvnorms = V4L2_STD_PAL | V4L2_STD_NTSC
|
|
};
|
|
|
|
static int __devinit timblogiw_probe(struct platform_device *pdev)
|
|
{
|
|
int err;
|
|
struct timblogiw *lw = NULL;
|
|
struct timb_video_platform_data *pdata = pdev->dev.platform_data;
|
|
|
|
if (!pdata) {
|
|
dev_err(&pdev->dev, "No platform data\n");
|
|
err = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
if (!pdata->encoder.module_name)
|
|
dev_info(&pdev->dev, "Running without decoder\n");
|
|
|
|
lw = kzalloc(sizeof(*lw), GFP_KERNEL);
|
|
if (!lw) {
|
|
err = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
if (pdev->dev.parent)
|
|
lw->dev = pdev->dev.parent;
|
|
else
|
|
lw->dev = &pdev->dev;
|
|
|
|
memcpy(&lw->pdata, pdata, sizeof(lw->pdata));
|
|
|
|
mutex_init(&lw->lock);
|
|
|
|
lw->video_dev = timblogiw_template;
|
|
|
|
strlcpy(lw->v4l2_dev.name, DRIVER_NAME, sizeof(lw->v4l2_dev.name));
|
|
err = v4l2_device_register(NULL, &lw->v4l2_dev);
|
|
if (err)
|
|
goto err_register;
|
|
|
|
lw->video_dev.v4l2_dev = &lw->v4l2_dev;
|
|
|
|
platform_set_drvdata(pdev, lw);
|
|
video_set_drvdata(&lw->video_dev, lw);
|
|
|
|
err = video_register_device(&lw->video_dev, VFL_TYPE_GRABBER, 0);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Error reg video: %d\n", err);
|
|
goto err_request;
|
|
}
|
|
|
|
|
|
return 0;
|
|
|
|
err_request:
|
|
platform_set_drvdata(pdev, NULL);
|
|
v4l2_device_unregister(&lw->v4l2_dev);
|
|
err_register:
|
|
kfree(lw);
|
|
err:
|
|
dev_err(&pdev->dev, "Failed to register: %d\n", err);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int __devexit timblogiw_remove(struct platform_device *pdev)
|
|
{
|
|
struct timblogiw *lw = platform_get_drvdata(pdev);
|
|
|
|
video_unregister_device(&lw->video_dev);
|
|
|
|
v4l2_device_unregister(&lw->v4l2_dev);
|
|
|
|
kfree(lw);
|
|
|
|
platform_set_drvdata(pdev, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver timblogiw_platform_driver = {
|
|
.driver = {
|
|
.name = DRIVER_NAME,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = timblogiw_probe,
|
|
.remove = __devexit_p(timblogiw_remove),
|
|
};
|
|
|
|
/* Module functions */
|
|
|
|
static int __init timblogiw_init(void)
|
|
{
|
|
return platform_driver_register(&timblogiw_platform_driver);
|
|
}
|
|
|
|
static void __exit timblogiw_exit(void)
|
|
{
|
|
platform_driver_unregister(&timblogiw_platform_driver);
|
|
}
|
|
|
|
module_init(timblogiw_init);
|
|
module_exit(timblogiw_exit);
|
|
|
|
MODULE_DESCRIPTION(TIMBLOGIWIN_NAME);
|
|
MODULE_AUTHOR("Pelagicore AB <info@pelagicore.com>");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_ALIAS("platform:"DRIVER_NAME);
|