1954 lines
49 KiB
C
1954 lines
49 KiB
C
/*
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em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
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video capture devices
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Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
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Markus Rechberger <mrechberger@gmail.com>
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Mauro Carvalho Chehab <mchehab@infradead.org>
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Sascha Sommer <saschasommer@freenet.de>
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Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
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Some parts based on SN9C10x PC Camera Controllers GPL driver made
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by Luca Risolia <luca.risolia@studio.unibo.it>
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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 as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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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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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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/bitmap.h>
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#include <linux/usb.h>
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#include <linux/i2c.h>
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#include <linux/mm.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include "em28xx.h"
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-chip-ident.h>
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#include <media/msp3400.h>
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#include <media/tuner.h>
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#define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
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"Markus Rechberger <mrechberger@gmail.com>, " \
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"Mauro Carvalho Chehab <mchehab@infradead.org>, " \
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"Sascha Sommer <saschasommer@freenet.de>"
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#define DRIVER_DESC "Empia em28xx based USB video device driver"
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#define EM28XX_VERSION "0.1.3"
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#define em28xx_videodbg(fmt, arg...) do {\
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if (video_debug) \
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printk(KERN_INFO "%s %s :"fmt, \
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dev->name, __func__ , ##arg); } while (0)
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static unsigned int isoc_debug;
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module_param(isoc_debug, int, 0644);
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MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
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#define em28xx_isocdbg(fmt, arg...) \
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do {\
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if (isoc_debug) { \
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printk(KERN_INFO "%s %s :"fmt, \
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dev->name, __func__ , ##arg); \
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} \
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} while (0)
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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MODULE_VERSION(EM28XX_VERSION);
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static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
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static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
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static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
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module_param_array(video_nr, int, NULL, 0444);
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module_param_array(vbi_nr, int, NULL, 0444);
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module_param_array(radio_nr, int, NULL, 0444);
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MODULE_PARM_DESC(video_nr, "video device numbers");
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MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
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MODULE_PARM_DESC(radio_nr, "radio device numbers");
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static unsigned int video_debug;
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module_param(video_debug, int, 0644);
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MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
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/* supported video standards */
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static struct em28xx_fmt format[] = {
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{
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.name = "16 bpp YUY2, 4:2:2, packed",
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.fourcc = V4L2_PIX_FMT_YUYV,
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.depth = 16,
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.reg = EM28XX_OUTFMT_YUV422_Y0UY1V,
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}, {
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.name = "16 bpp RGB 565, LE",
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.fourcc = V4L2_PIX_FMT_RGB565,
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.depth = 16,
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.reg = EM28XX_OUTFMT_RGB_16_656,
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}, {
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.name = "8 bpp Bayer BGBG..GRGR",
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.fourcc = V4L2_PIX_FMT_SBGGR8,
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.depth = 8,
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.reg = EM28XX_OUTFMT_RGB_8_BGBG,
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}, {
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.name = "8 bpp Bayer GRGR..BGBG",
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.fourcc = V4L2_PIX_FMT_SGRBG8,
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.depth = 8,
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.reg = EM28XX_OUTFMT_RGB_8_GRGR,
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}, {
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.name = "8 bpp Bayer GBGB..RGRG",
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.fourcc = V4L2_PIX_FMT_SGBRG8,
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.depth = 8,
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.reg = EM28XX_OUTFMT_RGB_8_GBGB,
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}, {
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.name = "12 bpp YUV411",
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.fourcc = V4L2_PIX_FMT_YUV411P,
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.depth = 12,
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.reg = EM28XX_OUTFMT_YUV411,
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},
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};
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/* ------------------------------------------------------------------
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DMA and thread functions
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------------------------------------------------------------------*/
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/*
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* Finish the current buffer
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*/
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static inline void finish_buffer(struct em28xx *dev,
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struct em28xx_buffer *buf)
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{
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em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
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buf->vb.v4l2_buf.sequence = dev->field_count++;
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buf->vb.v4l2_buf.field = V4L2_FIELD_INTERLACED;
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v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
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vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE);
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}
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/*
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* Copy picture data from USB buffer to videobuf buffer
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*/
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static void em28xx_copy_video(struct em28xx *dev,
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struct em28xx_buffer *buf,
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unsigned char *usb_buf,
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unsigned long len)
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{
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void *fieldstart, *startwrite, *startread;
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int linesdone, currlinedone, offset, lencopy, remain;
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int bytesperline = dev->width << 1;
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if (buf->pos + len > buf->length)
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len = buf->length - buf->pos;
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startread = usb_buf;
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remain = len;
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if (dev->progressive || buf->top_field)
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fieldstart = buf->vb_buf;
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else /* interlaced mode, even nr. of lines */
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fieldstart = buf->vb_buf + bytesperline;
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linesdone = buf->pos / bytesperline;
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currlinedone = buf->pos % bytesperline;
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if (dev->progressive)
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offset = linesdone * bytesperline + currlinedone;
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else
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offset = linesdone * bytesperline * 2 + currlinedone;
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startwrite = fieldstart + offset;
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lencopy = bytesperline - currlinedone;
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lencopy = lencopy > remain ? remain : lencopy;
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if ((char *)startwrite + lencopy > (char *)buf->vb_buf + buf->length) {
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em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
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((char *)startwrite + lencopy) -
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((char *)buf->vb_buf + buf->length));
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remain = (char *)buf->vb_buf + buf->length -
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(char *)startwrite;
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lencopy = remain;
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}
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if (lencopy <= 0)
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return;
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memcpy(startwrite, startread, lencopy);
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remain -= lencopy;
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while (remain > 0) {
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if (dev->progressive)
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startwrite += lencopy;
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else
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startwrite += lencopy + bytesperline;
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startread += lencopy;
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if (bytesperline > remain)
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lencopy = remain;
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else
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lencopy = bytesperline;
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if ((char *)startwrite + lencopy > (char *)buf->vb_buf +
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buf->length) {
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em28xx_isocdbg("Overflow of %zi bytes past buffer end"
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"(2)\n",
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((char *)startwrite + lencopy) -
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((char *)buf->vb_buf + buf->length));
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lencopy = remain = (char *)buf->vb_buf + buf->length -
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(char *)startwrite;
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}
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if (lencopy <= 0)
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break;
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memcpy(startwrite, startread, lencopy);
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remain -= lencopy;
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}
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buf->pos += len;
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}
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/*
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* Copy VBI data from USB buffer to videobuf buffer
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*/
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static void em28xx_copy_vbi(struct em28xx *dev,
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struct em28xx_buffer *buf,
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unsigned char *usb_buf,
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unsigned long len)
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{
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unsigned int offset;
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if (buf->pos + len > buf->length)
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len = buf->length - buf->pos;
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offset = buf->pos;
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/* Make sure the bottom field populates the second half of the frame */
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if (buf->top_field == 0)
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offset += dev->vbi_width * dev->vbi_height;
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memcpy(buf->vb_buf + offset, usb_buf, len);
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buf->pos += len;
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}
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static inline void print_err_status(struct em28xx *dev,
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int packet, int status)
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{
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char *errmsg = "Unknown";
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switch (status) {
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case -ENOENT:
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errmsg = "unlinked synchronuously";
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break;
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case -ECONNRESET:
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errmsg = "unlinked asynchronuously";
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break;
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case -ENOSR:
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errmsg = "Buffer error (overrun)";
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break;
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case -EPIPE:
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errmsg = "Stalled (device not responding)";
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break;
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case -EOVERFLOW:
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errmsg = "Babble (bad cable?)";
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break;
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case -EPROTO:
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errmsg = "Bit-stuff error (bad cable?)";
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break;
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case -EILSEQ:
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errmsg = "CRC/Timeout (could be anything)";
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break;
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case -ETIME:
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errmsg = "Device does not respond";
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break;
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}
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if (packet < 0) {
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em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
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} else {
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em28xx_isocdbg("URB packet %d, status %d [%s].\n",
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packet, status, errmsg);
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}
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}
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/*
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* get the next available buffer from dma queue
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*/
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static inline struct em28xx_buffer *get_next_buf(struct em28xx *dev,
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struct em28xx_dmaqueue *dma_q)
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{
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struct em28xx_buffer *buf;
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if (list_empty(&dma_q->active)) {
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em28xx_isocdbg("No active queue to serve\n");
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return NULL;
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}
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/* Get the next buffer */
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buf = list_entry(dma_q->active.next, struct em28xx_buffer, list);
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/* Cleans up buffer - Useful for testing for frame/URB loss */
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list_del(&buf->list);
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buf->pos = 0;
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buf->vb_buf = buf->mem;
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return buf;
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}
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/*
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* Finish the current buffer if completed and prepare for the next field
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*/
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static struct em28xx_buffer *
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finish_field_prepare_next(struct em28xx *dev,
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struct em28xx_buffer *buf,
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struct em28xx_dmaqueue *dma_q)
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{
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if (dev->progressive || dev->top_field) { /* Brand new frame */
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if (buf != NULL)
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finish_buffer(dev, buf);
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buf = get_next_buf(dev, dma_q);
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}
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if (buf != NULL) {
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buf->top_field = dev->top_field;
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buf->pos = 0;
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}
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return buf;
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}
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/*
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* Process data packet according to the em2710/em2750/em28xx frame data format
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*/
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static inline void process_frame_data_em28xx(struct em28xx *dev,
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unsigned char *data_pkt,
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unsigned int data_len)
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{
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struct em28xx_buffer *buf = dev->usb_ctl.vid_buf;
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struct em28xx_buffer *vbi_buf = dev->usb_ctl.vbi_buf;
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struct em28xx_dmaqueue *dma_q = &dev->vidq;
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struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq;
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/* capture type 0 = vbi start
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capture type 1 = vbi in progress
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capture type 2 = video start
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capture type 3 = video in progress */
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if (data_len >= 4) {
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/* NOTE: Headers are always 4 bytes and
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* never split across packets */
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if (data_pkt[0] == 0x88 && data_pkt[1] == 0x88 &&
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data_pkt[2] == 0x88 && data_pkt[3] == 0x88) {
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/* Continuation */
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data_pkt += 4;
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data_len -= 4;
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} else if (data_pkt[0] == 0x33 && data_pkt[1] == 0x95) {
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/* Field start (VBI mode) */
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dev->capture_type = 0;
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dev->vbi_read = 0;
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em28xx_isocdbg("VBI START HEADER !!!\n");
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dev->top_field = !(data_pkt[2] & 1);
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data_pkt += 4;
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data_len -= 4;
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} else if (data_pkt[0] == 0x22 && data_pkt[1] == 0x5a) {
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/* Field start (VBI disabled) */
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dev->capture_type = 2;
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em28xx_isocdbg("VIDEO START HEADER !!!\n");
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dev->top_field = !(data_pkt[2] & 1);
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data_pkt += 4;
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data_len -= 4;
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}
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}
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/* NOTE: With bulk transfers, intermediate data packets
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* have no continuation header */
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if (dev->capture_type == 0) {
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vbi_buf = finish_field_prepare_next(dev, vbi_buf, vbi_dma_q);
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dev->usb_ctl.vbi_buf = vbi_buf;
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dev->capture_type = 1;
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}
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if (dev->capture_type == 1) {
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int vbi_size = dev->vbi_width * dev->vbi_height;
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int vbi_data_len = ((dev->vbi_read + data_len) > vbi_size) ?
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(vbi_size - dev->vbi_read) : data_len;
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/* Copy VBI data */
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if (vbi_buf != NULL)
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em28xx_copy_vbi(dev, vbi_buf, data_pkt, vbi_data_len);
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dev->vbi_read += vbi_data_len;
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if (vbi_data_len < data_len) {
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/* Continue with copying video data */
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dev->capture_type = 2;
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data_pkt += vbi_data_len;
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data_len -= vbi_data_len;
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}
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}
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if (dev->capture_type == 2) {
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buf = finish_field_prepare_next(dev, buf, dma_q);
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dev->usb_ctl.vid_buf = buf;
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dev->capture_type = 3;
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}
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if (dev->capture_type == 3 && buf != NULL && data_len > 0)
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em28xx_copy_video(dev, buf, data_pkt, data_len);
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}
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/* Processes and copies the URB data content (video and VBI data) */
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static inline int em28xx_urb_data_copy(struct em28xx *dev, struct urb *urb)
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{
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int xfer_bulk, num_packets, i;
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unsigned char *usb_data_pkt;
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unsigned int usb_data_len;
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if (!dev)
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return 0;
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if (dev->disconnected)
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return 0;
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if (urb->status < 0)
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print_err_status(dev, -1, urb->status);
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xfer_bulk = usb_pipebulk(urb->pipe);
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if (xfer_bulk) /* bulk */
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num_packets = 1;
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else /* isoc */
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num_packets = urb->number_of_packets;
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for (i = 0; i < num_packets; i++) {
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if (xfer_bulk) { /* bulk */
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usb_data_len = urb->actual_length;
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usb_data_pkt = urb->transfer_buffer;
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} else { /* isoc */
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if (urb->iso_frame_desc[i].status < 0) {
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print_err_status(dev, i,
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urb->iso_frame_desc[i].status);
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if (urb->iso_frame_desc[i].status != -EPROTO)
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continue;
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}
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usb_data_len = urb->iso_frame_desc[i].actual_length;
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if (usb_data_len > dev->max_pkt_size) {
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em28xx_isocdbg("packet bigger than packet size");
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continue;
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}
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usb_data_pkt = urb->transfer_buffer +
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urb->iso_frame_desc[i].offset;
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}
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if (usb_data_len == 0) {
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/* NOTE: happens very often with isoc transfers */
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/* em28xx_usbdbg("packet %d is empty",i); - spammy */
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continue;
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}
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process_frame_data_em28xx(dev, usb_data_pkt, usb_data_len);
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}
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return 1;
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}
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static int get_ressource(enum v4l2_buf_type f_type)
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{
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switch (f_type) {
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case V4L2_BUF_TYPE_VIDEO_CAPTURE:
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return EM28XX_RESOURCE_VIDEO;
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case V4L2_BUF_TYPE_VBI_CAPTURE:
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return EM28XX_RESOURCE_VBI;
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default:
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BUG();
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return 0;
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}
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}
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/* Usage lock check functions */
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static int res_get(struct em28xx *dev, enum v4l2_buf_type f_type)
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{
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int res_type = get_ressource(f_type);
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/* is it free? */
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if (dev->resources & res_type) {
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/* no, someone else uses it */
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return -EBUSY;
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}
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/* it's free, grab it */
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dev->resources |= res_type;
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em28xx_videodbg("res: get %d\n", res_type);
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return 0;
|
|
}
|
|
|
|
static void res_free(struct em28xx *dev, enum v4l2_buf_type f_type)
|
|
{
|
|
int res_type = get_ressource(f_type);
|
|
|
|
dev->resources &= ~res_type;
|
|
em28xx_videodbg("res: put %d\n", res_type);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------
|
|
Videobuf2 operations
|
|
------------------------------------------------------------------*/
|
|
|
|
static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
|
|
unsigned int *nbuffers, unsigned int *nplanes,
|
|
unsigned int sizes[], void *alloc_ctxs[])
|
|
{
|
|
struct em28xx *dev = vb2_get_drv_priv(vq);
|
|
unsigned long size;
|
|
|
|
if (fmt)
|
|
size = fmt->fmt.pix.sizeimage;
|
|
else
|
|
size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
|
|
|
|
if (size == 0)
|
|
return -EINVAL;
|
|
|
|
if (0 == *nbuffers)
|
|
*nbuffers = 32;
|
|
|
|
*nplanes = 1;
|
|
sizes[0] = size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
buffer_prepare(struct vb2_buffer *vb)
|
|
{
|
|
struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
|
|
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
|
|
unsigned long size;
|
|
|
|
em28xx_videodbg("%s, field=%d\n", __func__, vb->v4l2_buf.field);
|
|
|
|
size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
|
|
|
|
if (vb2_plane_size(vb, 0) < size) {
|
|
em28xx_videodbg("%s data will not fit into plane (%lu < %lu)\n",
|
|
__func__, vb2_plane_size(vb, 0), size);
|
|
return -EINVAL;
|
|
}
|
|
vb2_set_plane_payload(&buf->vb, 0, size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
|
|
{
|
|
struct em28xx *dev = vb2_get_drv_priv(vq);
|
|
struct v4l2_frequency f;
|
|
int rc = 0;
|
|
|
|
em28xx_videodbg("%s\n", __func__);
|
|
|
|
/* Make sure streaming is not already in progress for this type
|
|
of filehandle (e.g. video, vbi) */
|
|
rc = res_get(dev, vq->type);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (dev->streaming_users++ == 0) {
|
|
/* First active streaming user, so allocate all the URBs */
|
|
|
|
/* Allocate the USB bandwidth */
|
|
em28xx_set_alternate(dev);
|
|
|
|
/* Needed, since GPIO might have disabled power of
|
|
some i2c device
|
|
*/
|
|
em28xx_wake_i2c(dev);
|
|
|
|
dev->capture_type = -1;
|
|
rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE,
|
|
dev->analog_xfer_bulk,
|
|
EM28XX_NUM_BUFS,
|
|
dev->max_pkt_size,
|
|
dev->packet_multiplier,
|
|
em28xx_urb_data_copy);
|
|
if (rc < 0)
|
|
goto fail;
|
|
|
|
/*
|
|
* djh: it's not clear whether this code is still needed. I'm
|
|
* leaving it in here for now entirely out of concern for
|
|
* backward compatibility (the old code did it)
|
|
*/
|
|
|
|
/* Ask tuner to go to analog or radio mode */
|
|
memset(&f, 0, sizeof(f));
|
|
f.frequency = dev->ctl_freq;
|
|
if (vq->owner && vq->owner->vdev->vfl_type == VFL_TYPE_RADIO)
|
|
f.type = V4L2_TUNER_RADIO;
|
|
else
|
|
f.type = V4L2_TUNER_ANALOG_TV;
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
|
|
}
|
|
|
|
fail:
|
|
return rc;
|
|
}
|
|
|
|
static int em28xx_stop_streaming(struct vb2_queue *vq)
|
|
{
|
|
struct em28xx *dev = vb2_get_drv_priv(vq);
|
|
struct em28xx_dmaqueue *vidq = &dev->vidq;
|
|
unsigned long flags = 0;
|
|
|
|
em28xx_videodbg("%s\n", __func__);
|
|
|
|
res_free(dev, vq->type);
|
|
|
|
if (dev->streaming_users-- == 1) {
|
|
/* Last active user, so shutdown all the URBS */
|
|
em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
|
|
}
|
|
|
|
spin_lock_irqsave(&dev->slock, flags);
|
|
while (!list_empty(&vidq->active)) {
|
|
struct em28xx_buffer *buf;
|
|
buf = list_entry(vidq->active.next, struct em28xx_buffer, list);
|
|
list_del(&buf->list);
|
|
vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
|
|
}
|
|
dev->usb_ctl.vid_buf = NULL;
|
|
spin_unlock_irqrestore(&dev->slock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int em28xx_stop_vbi_streaming(struct vb2_queue *vq)
|
|
{
|
|
struct em28xx *dev = vb2_get_drv_priv(vq);
|
|
struct em28xx_dmaqueue *vbiq = &dev->vbiq;
|
|
unsigned long flags = 0;
|
|
|
|
em28xx_videodbg("%s\n", __func__);
|
|
|
|
res_free(dev, vq->type);
|
|
|
|
if (dev->streaming_users-- == 1) {
|
|
/* Last active user, so shutdown all the URBS */
|
|
em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
|
|
}
|
|
|
|
spin_lock_irqsave(&dev->slock, flags);
|
|
while (!list_empty(&vbiq->active)) {
|
|
struct em28xx_buffer *buf;
|
|
buf = list_entry(vbiq->active.next, struct em28xx_buffer, list);
|
|
list_del(&buf->list);
|
|
vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
|
|
}
|
|
dev->usb_ctl.vbi_buf = NULL;
|
|
spin_unlock_irqrestore(&dev->slock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
buffer_queue(struct vb2_buffer *vb)
|
|
{
|
|
struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
|
|
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
|
|
struct em28xx_dmaqueue *vidq = &dev->vidq;
|
|
unsigned long flags = 0;
|
|
|
|
em28xx_videodbg("%s\n", __func__);
|
|
buf->mem = vb2_plane_vaddr(vb, 0);
|
|
buf->length = vb2_plane_size(vb, 0);
|
|
|
|
spin_lock_irqsave(&dev->slock, flags);
|
|
list_add_tail(&buf->list, &vidq->active);
|
|
spin_unlock_irqrestore(&dev->slock, flags);
|
|
}
|
|
|
|
static struct vb2_ops em28xx_video_qops = {
|
|
.queue_setup = queue_setup,
|
|
.buf_prepare = buffer_prepare,
|
|
.buf_queue = buffer_queue,
|
|
.start_streaming = em28xx_start_analog_streaming,
|
|
.stop_streaming = em28xx_stop_streaming,
|
|
.wait_prepare = vb2_ops_wait_prepare,
|
|
.wait_finish = vb2_ops_wait_finish,
|
|
};
|
|
|
|
int em28xx_vb2_setup(struct em28xx *dev)
|
|
{
|
|
int rc;
|
|
struct vb2_queue *q;
|
|
|
|
/* Setup Videobuf2 for Video capture */
|
|
q = &dev->vb_vidq;
|
|
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
|
|
q->drv_priv = dev;
|
|
q->buf_struct_size = sizeof(struct em28xx_buffer);
|
|
q->ops = &em28xx_video_qops;
|
|
q->mem_ops = &vb2_vmalloc_memops;
|
|
|
|
rc = vb2_queue_init(q);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
/* Setup Videobuf2 for VBI capture */
|
|
q = &dev->vb_vbiq;
|
|
q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
|
|
q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR;
|
|
q->drv_priv = dev;
|
|
q->buf_struct_size = sizeof(struct em28xx_buffer);
|
|
q->ops = &em28xx_vbi_qops;
|
|
q->mem_ops = &vb2_vmalloc_memops;
|
|
|
|
rc = vb2_queue_init(q);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/********************* v4l2 interface **************************************/
|
|
|
|
static void video_mux(struct em28xx *dev, int index)
|
|
{
|
|
dev->ctl_input = index;
|
|
dev->ctl_ainput = INPUT(index)->amux;
|
|
dev->ctl_aoutput = INPUT(index)->aout;
|
|
|
|
if (!dev->ctl_aoutput)
|
|
dev->ctl_aoutput = EM28XX_AOUT_MASTER;
|
|
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
|
|
INPUT(index)->vmux, 0, 0);
|
|
|
|
if (dev->board.has_msp34xx) {
|
|
if (dev->i2s_speed) {
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
|
|
s_i2s_clock_freq, dev->i2s_speed);
|
|
}
|
|
/* Note: this is msp3400 specific */
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
|
|
dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
|
|
}
|
|
|
|
if (dev->board.adecoder != EM28XX_NOADECODER) {
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
|
|
dev->ctl_ainput, dev->ctl_aoutput, 0);
|
|
}
|
|
|
|
em28xx_audio_analog_set(dev);
|
|
}
|
|
|
|
void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv)
|
|
{
|
|
struct em28xx *dev = priv;
|
|
|
|
/*
|
|
* In the case of non-AC97 volume controls, we still need
|
|
* to do some setups at em28xx, in order to mute/unmute
|
|
* and to adjust audio volume. However, the value ranges
|
|
* should be checked by the corresponding V4L subdriver.
|
|
*/
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
dev->mute = ctrl->val;
|
|
em28xx_audio_analog_set(dev);
|
|
break;
|
|
case V4L2_CID_AUDIO_VOLUME:
|
|
dev->volume = ctrl->val;
|
|
em28xx_audio_analog_set(dev);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int em28xx_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct em28xx *dev = container_of(ctrl->handler, struct em28xx, ctrl_handler);
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
dev->mute = ctrl->val;
|
|
break;
|
|
case V4L2_CID_AUDIO_VOLUME:
|
|
dev->volume = ctrl->val;
|
|
break;
|
|
}
|
|
|
|
return em28xx_audio_analog_set(dev);
|
|
}
|
|
|
|
const struct v4l2_ctrl_ops em28xx_ctrl_ops = {
|
|
.s_ctrl = em28xx_s_ctrl,
|
|
};
|
|
|
|
static int check_dev(struct em28xx *dev)
|
|
{
|
|
if (dev->disconnected) {
|
|
em28xx_errdev("v4l2 ioctl: device not present\n");
|
|
return -ENODEV;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void get_scale(struct em28xx *dev,
|
|
unsigned int width, unsigned int height,
|
|
unsigned int *hscale, unsigned int *vscale)
|
|
{
|
|
unsigned int maxw = norm_maxw(dev);
|
|
unsigned int maxh = norm_maxh(dev);
|
|
|
|
*hscale = (((unsigned long)maxw) << 12) / width - 4096L;
|
|
if (*hscale >= 0x4000)
|
|
*hscale = 0x3fff;
|
|
|
|
*vscale = (((unsigned long)maxh) << 12) / height - 4096L;
|
|
if (*vscale >= 0x4000)
|
|
*vscale = 0x3fff;
|
|
}
|
|
|
|
/* ------------------------------------------------------------------
|
|
IOCTL vidioc handling
|
|
------------------------------------------------------------------*/
|
|
|
|
static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
|
|
f->fmt.pix.width = dev->width;
|
|
f->fmt.pix.height = dev->height;
|
|
f->fmt.pix.pixelformat = dev->format->fourcc;
|
|
f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
|
|
f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
|
|
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
|
|
|
|
/* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
|
|
if (dev->progressive)
|
|
f->fmt.pix.field = V4L2_FIELD_NONE;
|
|
else
|
|
f->fmt.pix.field = dev->interlaced ?
|
|
V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
|
|
return 0;
|
|
}
|
|
|
|
static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(format); i++)
|
|
if (format[i].fourcc == fourcc)
|
|
return &format[i];
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
unsigned int width = f->fmt.pix.width;
|
|
unsigned int height = f->fmt.pix.height;
|
|
unsigned int maxw = norm_maxw(dev);
|
|
unsigned int maxh = norm_maxh(dev);
|
|
unsigned int hscale, vscale;
|
|
struct em28xx_fmt *fmt;
|
|
|
|
fmt = format_by_fourcc(f->fmt.pix.pixelformat);
|
|
if (!fmt) {
|
|
em28xx_videodbg("Fourcc format (%08x) invalid.\n",
|
|
f->fmt.pix.pixelformat);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (dev->board.is_em2800) {
|
|
/* the em2800 can only scale down to 50% */
|
|
height = height > (3 * maxh / 4) ? maxh : maxh / 2;
|
|
width = width > (3 * maxw / 4) ? maxw : maxw / 2;
|
|
/*
|
|
* MaxPacketSize for em2800 is too small to capture at full
|
|
* resolution use half of maxw as the scaler can only scale
|
|
* to 50%
|
|
*/
|
|
if (width == maxw && height == maxh)
|
|
width /= 2;
|
|
} else {
|
|
/* width must even because of the YUYV format
|
|
height must be even because of interlacing */
|
|
v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh,
|
|
1, 0);
|
|
}
|
|
|
|
get_scale(dev, width, height, &hscale, &vscale);
|
|
|
|
width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
|
|
height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
|
|
|
|
f->fmt.pix.width = width;
|
|
f->fmt.pix.height = height;
|
|
f->fmt.pix.pixelformat = fmt->fourcc;
|
|
f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
|
|
f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
|
|
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
|
|
if (dev->progressive)
|
|
f->fmt.pix.field = V4L2_FIELD_NONE;
|
|
else
|
|
f->fmt.pix.field = dev->interlaced ?
|
|
V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
|
|
unsigned width, unsigned height)
|
|
{
|
|
struct em28xx_fmt *fmt;
|
|
|
|
fmt = format_by_fourcc(fourcc);
|
|
if (!fmt)
|
|
return -EINVAL;
|
|
|
|
dev->format = fmt;
|
|
dev->width = width;
|
|
dev->height = height;
|
|
|
|
/* set new image size */
|
|
get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
|
|
|
|
em28xx_resolution_set(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct em28xx *dev = video_drvdata(file);
|
|
|
|
if (dev->streaming_users > 0)
|
|
return -EBUSY;
|
|
|
|
vidioc_try_fmt_vid_cap(file, priv, f);
|
|
|
|
return em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
|
|
f->fmt.pix.width, f->fmt.pix.height);
|
|
}
|
|
|
|
static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
if (dev->board.is_webcam)
|
|
return -ENOTTY;
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
*norm = dev->norm;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
if (dev->board.is_webcam)
|
|
return -ENOTTY;
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, video, querystd, norm);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
struct v4l2_format f;
|
|
int rc;
|
|
|
|
if (dev->board.is_webcam)
|
|
return -ENOTTY;
|
|
if (*norm == dev->norm)
|
|
return 0;
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (dev->streaming_users > 0)
|
|
return -EBUSY;
|
|
|
|
dev->norm = *norm;
|
|
|
|
/* Adjusts width/height, if needed */
|
|
f.fmt.pix.width = 720;
|
|
f.fmt.pix.height = (*norm & V4L2_STD_525_60) ? 480 : 576;
|
|
vidioc_try_fmt_vid_cap(file, priv, &f);
|
|
|
|
/* set new image size */
|
|
dev->width = f.fmt.pix.width;
|
|
dev->height = f.fmt.pix.height;
|
|
get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
|
|
|
|
em28xx_resolution_set(dev);
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_g_parm(struct file *file, void *priv,
|
|
struct v4l2_streamparm *p)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc = 0;
|
|
|
|
if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
|
|
p->parm.capture.readbuffers = EM28XX_MIN_BUF;
|
|
if (dev->board.is_webcam)
|
|
rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
|
|
video, g_parm, p);
|
|
else
|
|
v4l2_video_std_frame_period(dev->norm,
|
|
&p->parm.capture.timeperframe);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int vidioc_s_parm(struct file *file, void *priv,
|
|
struct v4l2_streamparm *p)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
|
|
if (!dev->board.is_webcam)
|
|
return -ENOTTY;
|
|
|
|
if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
|
|
p->parm.capture.readbuffers = EM28XX_MIN_BUF;
|
|
return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
|
|
}
|
|
|
|
static const char *iname[] = {
|
|
[EM28XX_VMUX_COMPOSITE1] = "Composite1",
|
|
[EM28XX_VMUX_COMPOSITE2] = "Composite2",
|
|
[EM28XX_VMUX_COMPOSITE3] = "Composite3",
|
|
[EM28XX_VMUX_COMPOSITE4] = "Composite4",
|
|
[EM28XX_VMUX_SVIDEO] = "S-Video",
|
|
[EM28XX_VMUX_TELEVISION] = "Television",
|
|
[EM28XX_VMUX_CABLE] = "Cable TV",
|
|
[EM28XX_VMUX_DVB] = "DVB",
|
|
[EM28XX_VMUX_DEBUG] = "for debug only",
|
|
};
|
|
|
|
static int vidioc_enum_input(struct file *file, void *priv,
|
|
struct v4l2_input *i)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
unsigned int n;
|
|
|
|
n = i->index;
|
|
if (n >= MAX_EM28XX_INPUT)
|
|
return -EINVAL;
|
|
if (0 == INPUT(n)->type)
|
|
return -EINVAL;
|
|
|
|
i->index = n;
|
|
i->type = V4L2_INPUT_TYPE_CAMERA;
|
|
|
|
strcpy(i->name, iname[INPUT(n)->type]);
|
|
|
|
if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
|
|
(EM28XX_VMUX_CABLE == INPUT(n)->type))
|
|
i->type = V4L2_INPUT_TYPE_TUNER;
|
|
|
|
i->std = dev->vdev->tvnorms;
|
|
/* webcams do not have the STD API */
|
|
if (dev->board.is_webcam)
|
|
i->capabilities = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
|
|
*i = dev->ctl_input;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (i >= MAX_EM28XX_INPUT)
|
|
return -EINVAL;
|
|
if (0 == INPUT(i)->type)
|
|
return -EINVAL;
|
|
|
|
video_mux(dev, i);
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
|
|
if (!dev->audio_mode.has_audio)
|
|
return -EINVAL;
|
|
|
|
switch (a->index) {
|
|
case EM28XX_AMUX_VIDEO:
|
|
strcpy(a->name, "Television");
|
|
break;
|
|
case EM28XX_AMUX_LINE_IN:
|
|
strcpy(a->name, "Line In");
|
|
break;
|
|
case EM28XX_AMUX_VIDEO2:
|
|
strcpy(a->name, "Television alt");
|
|
break;
|
|
case EM28XX_AMUX_PHONE:
|
|
strcpy(a->name, "Phone");
|
|
break;
|
|
case EM28XX_AMUX_MIC:
|
|
strcpy(a->name, "Mic");
|
|
break;
|
|
case EM28XX_AMUX_CD:
|
|
strcpy(a->name, "CD");
|
|
break;
|
|
case EM28XX_AMUX_AUX:
|
|
strcpy(a->name, "Aux");
|
|
break;
|
|
case EM28XX_AMUX_PCM_OUT:
|
|
strcpy(a->name, "PCM");
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
a->index = dev->ctl_ainput;
|
|
a->capability = V4L2_AUDCAP_STEREO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
|
|
|
|
if (!dev->audio_mode.has_audio)
|
|
return -EINVAL;
|
|
|
|
if (a->index >= MAX_EM28XX_INPUT)
|
|
return -EINVAL;
|
|
if (0 == INPUT(a->index)->type)
|
|
return -EINVAL;
|
|
|
|
dev->ctl_ainput = INPUT(a->index)->amux;
|
|
dev->ctl_aoutput = INPUT(a->index)->aout;
|
|
|
|
if (!dev->ctl_aoutput)
|
|
dev->ctl_aoutput = EM28XX_AOUT_MASTER;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_g_tuner(struct file *file, void *priv,
|
|
struct v4l2_tuner *t)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (0 != t->index)
|
|
return -EINVAL;
|
|
|
|
strcpy(t->name, "Tuner");
|
|
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_tuner(struct file *file, void *priv,
|
|
struct v4l2_tuner *t)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (0 != t->index)
|
|
return -EINVAL;
|
|
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_g_frequency(struct file *file, void *priv,
|
|
struct v4l2_frequency *f)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
|
|
if (0 != f->tuner)
|
|
return -EINVAL;
|
|
|
|
f->frequency = dev->ctl_freq;
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_frequency(struct file *file, void *priv,
|
|
struct v4l2_frequency *f)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (0 != f->tuner)
|
|
return -EINVAL;
|
|
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
|
|
dev->ctl_freq = f->frequency;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
static int em28xx_reg_len(int reg)
|
|
{
|
|
switch (reg) {
|
|
case EM28XX_R40_AC97LSB:
|
|
case EM28XX_R30_HSCALELOW:
|
|
case EM28XX_R32_VSCALELOW:
|
|
return 2;
|
|
default:
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static int vidioc_g_chip_ident(struct file *file, void *priv,
|
|
struct v4l2_dbg_chip_ident *chip)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
|
|
chip->ident = V4L2_IDENT_NONE;
|
|
chip->revision = 0;
|
|
if (chip->match.type == V4L2_CHIP_MATCH_HOST) {
|
|
if (v4l2_chip_match_host(&chip->match))
|
|
chip->ident = V4L2_IDENT_NONE;
|
|
return 0;
|
|
}
|
|
if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER &&
|
|
chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
|
|
return -EINVAL;
|
|
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int vidioc_g_register(struct file *file, void *priv,
|
|
struct v4l2_dbg_register *reg)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int ret;
|
|
|
|
switch (reg->match.type) {
|
|
case V4L2_CHIP_MATCH_AC97:
|
|
ret = em28xx_read_ac97(dev, reg->reg);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
reg->val = ret;
|
|
reg->size = 1;
|
|
return 0;
|
|
case V4L2_CHIP_MATCH_I2C_DRIVER:
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
|
|
return 0;
|
|
case V4L2_CHIP_MATCH_I2C_ADDR:
|
|
/* TODO: is this correct? */
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
|
|
return 0;
|
|
default:
|
|
if (!v4l2_chip_match_host(®->match))
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Match host */
|
|
reg->size = em28xx_reg_len(reg->reg);
|
|
if (reg->size == 1) {
|
|
ret = em28xx_read_reg(dev, reg->reg);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
reg->val = ret;
|
|
} else {
|
|
__le16 val = 0;
|
|
ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
|
|
reg->reg, (char *)&val, 2);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
reg->val = le16_to_cpu(val);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_register(struct file *file, void *priv,
|
|
struct v4l2_dbg_register *reg)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
__le16 buf;
|
|
|
|
switch (reg->match.type) {
|
|
case V4L2_CHIP_MATCH_AC97:
|
|
return em28xx_write_ac97(dev, reg->reg, reg->val);
|
|
case V4L2_CHIP_MATCH_I2C_DRIVER:
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
|
|
return 0;
|
|
case V4L2_CHIP_MATCH_I2C_ADDR:
|
|
/* TODO: is this correct? */
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
|
|
return 0;
|
|
default:
|
|
if (!v4l2_chip_match_host(®->match))
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Match host */
|
|
buf = cpu_to_le16(reg->val);
|
|
|
|
return em28xx_write_regs(dev, reg->reg, (char *)&buf,
|
|
em28xx_reg_len(reg->reg));
|
|
}
|
|
#endif
|
|
|
|
|
|
static int vidioc_cropcap(struct file *file, void *priv,
|
|
struct v4l2_cropcap *cc)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
|
|
if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
|
|
cc->bounds.left = 0;
|
|
cc->bounds.top = 0;
|
|
cc->bounds.width = dev->width;
|
|
cc->bounds.height = dev->height;
|
|
cc->defrect = cc->bounds;
|
|
cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
|
|
cc->pixelaspect.denominator = 59;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_querycap(struct file *file, void *priv,
|
|
struct v4l2_capability *cap)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
|
|
strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
|
|
strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
|
|
usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
|
|
|
|
if (vdev->vfl_type == VFL_TYPE_GRABBER)
|
|
cap->device_caps = V4L2_CAP_READWRITE |
|
|
V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
|
|
else if (vdev->vfl_type == VFL_TYPE_RADIO)
|
|
cap->device_caps = V4L2_CAP_RADIO;
|
|
else
|
|
cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_VBI_CAPTURE;
|
|
|
|
if (dev->audio_mode.has_audio)
|
|
cap->device_caps |= V4L2_CAP_AUDIO;
|
|
|
|
if (dev->tuner_type != TUNER_ABSENT)
|
|
cap->device_caps |= V4L2_CAP_TUNER;
|
|
|
|
cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
|
|
V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
|
|
if (dev->vbi_dev)
|
|
cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
|
|
if (dev->radio_dev)
|
|
cap->capabilities |= V4L2_CAP_RADIO;
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_fmtdesc *f)
|
|
{
|
|
if (unlikely(f->index >= ARRAY_SIZE(format)))
|
|
return -EINVAL;
|
|
|
|
strlcpy(f->description, format[f->index].name, sizeof(f->description));
|
|
f->pixelformat = format[f->index].fourcc;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_enum_framesizes(struct file *file, void *priv,
|
|
struct v4l2_frmsizeenum *fsize)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
struct em28xx_fmt *fmt;
|
|
unsigned int maxw = norm_maxw(dev);
|
|
unsigned int maxh = norm_maxh(dev);
|
|
|
|
fmt = format_by_fourcc(fsize->pixel_format);
|
|
if (!fmt) {
|
|
em28xx_videodbg("Fourcc format (%08x) invalid.\n",
|
|
fsize->pixel_format);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (dev->board.is_em2800) {
|
|
if (fsize->index > 1)
|
|
return -EINVAL;
|
|
fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
|
|
fsize->discrete.width = maxw / (1 + fsize->index);
|
|
fsize->discrete.height = maxh / (1 + fsize->index);
|
|
return 0;
|
|
}
|
|
|
|
if (fsize->index != 0)
|
|
return -EINVAL;
|
|
|
|
/* Report a continuous range */
|
|
fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
|
|
fsize->stepwise.min_width = 48;
|
|
fsize->stepwise.min_height = 32;
|
|
fsize->stepwise.max_width = maxw;
|
|
fsize->stepwise.max_height = maxh;
|
|
fsize->stepwise.step_width = 1;
|
|
fsize->stepwise.step_height = 1;
|
|
return 0;
|
|
}
|
|
|
|
/* RAW VBI ioctls */
|
|
|
|
static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
|
|
struct v4l2_format *format)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
|
|
format->fmt.vbi.samples_per_line = dev->vbi_width;
|
|
format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
|
|
format->fmt.vbi.offset = 0;
|
|
format->fmt.vbi.flags = 0;
|
|
format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
|
|
format->fmt.vbi.count[0] = dev->vbi_height;
|
|
format->fmt.vbi.count[1] = dev->vbi_height;
|
|
memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
|
|
|
|
/* Varies by video standard (NTSC, PAL, etc.) */
|
|
if (dev->norm & V4L2_STD_525_60) {
|
|
/* NTSC */
|
|
format->fmt.vbi.start[0] = 10;
|
|
format->fmt.vbi.start[1] = 273;
|
|
} else if (dev->norm & V4L2_STD_625_50) {
|
|
/* PAL */
|
|
format->fmt.vbi.start[0] = 6;
|
|
format->fmt.vbi.start[1] = 318;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
|
|
struct v4l2_format *format)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
|
|
format->fmt.vbi.samples_per_line = dev->vbi_width;
|
|
format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
|
|
format->fmt.vbi.offset = 0;
|
|
format->fmt.vbi.flags = 0;
|
|
format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
|
|
format->fmt.vbi.count[0] = dev->vbi_height;
|
|
format->fmt.vbi.count[1] = dev->vbi_height;
|
|
memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
|
|
|
|
/* Varies by video standard (NTSC, PAL, etc.) */
|
|
if (dev->norm & V4L2_STD_525_60) {
|
|
/* NTSC */
|
|
format->fmt.vbi.start[0] = 10;
|
|
format->fmt.vbi.start[1] = 273;
|
|
} else if (dev->norm & V4L2_STD_625_50) {
|
|
/* PAL */
|
|
format->fmt.vbi.start[0] = 6;
|
|
format->fmt.vbi.start[1] = 318;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------- */
|
|
/* RADIO ESPECIFIC IOCTLS */
|
|
/* ----------------------------------------------------------- */
|
|
|
|
static int radio_g_tuner(struct file *file, void *priv,
|
|
struct v4l2_tuner *t)
|
|
{
|
|
struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
|
|
|
|
if (unlikely(t->index > 0))
|
|
return -EINVAL;
|
|
|
|
strcpy(t->name, "Radio");
|
|
t->type = V4L2_TUNER_RADIO;
|
|
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int radio_s_tuner(struct file *file, void *priv,
|
|
struct v4l2_tuner *t)
|
|
{
|
|
struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
|
|
|
|
if (0 != t->index)
|
|
return -EINVAL;
|
|
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* em28xx_v4l2_open()
|
|
* inits the device and starts isoc transfer
|
|
*/
|
|
static int em28xx_v4l2_open(struct file *filp)
|
|
{
|
|
struct video_device *vdev = video_devdata(filp);
|
|
struct em28xx *dev = video_drvdata(filp);
|
|
enum v4l2_buf_type fh_type = 0;
|
|
struct em28xx_fh *fh;
|
|
|
|
switch (vdev->vfl_type) {
|
|
case VFL_TYPE_GRABBER:
|
|
fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
break;
|
|
case VFL_TYPE_VBI:
|
|
fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
|
|
break;
|
|
}
|
|
|
|
em28xx_videodbg("open dev=%s type=%s users=%d\n",
|
|
video_device_node_name(vdev), v4l2_type_names[fh_type],
|
|
dev->users);
|
|
|
|
|
|
if (mutex_lock_interruptible(&dev->lock))
|
|
return -ERESTARTSYS;
|
|
fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
|
|
if (!fh) {
|
|
em28xx_errdev("em28xx-video.c: Out of memory?!\n");
|
|
mutex_unlock(&dev->lock);
|
|
return -ENOMEM;
|
|
}
|
|
v4l2_fh_init(&fh->fh, vdev);
|
|
fh->dev = dev;
|
|
fh->type = fh_type;
|
|
filp->private_data = fh;
|
|
|
|
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
|
|
em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
|
|
em28xx_resolution_set(dev);
|
|
|
|
/* Needed, since GPIO might have disabled power of
|
|
some i2c device
|
|
*/
|
|
em28xx_wake_i2c(dev);
|
|
|
|
}
|
|
|
|
if (vdev->vfl_type == VFL_TYPE_RADIO) {
|
|
em28xx_videodbg("video_open: setting radio device\n");
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
|
|
}
|
|
|
|
dev->users++;
|
|
|
|
mutex_unlock(&dev->lock);
|
|
v4l2_fh_add(&fh->fh);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* em28xx_realease_resources()
|
|
* unregisters the v4l2,i2c and usb devices
|
|
* called when the device gets disconected or at module unload
|
|
*/
|
|
void em28xx_release_analog_resources(struct em28xx *dev)
|
|
{
|
|
|
|
/*FIXME: I2C IR should be disconnected */
|
|
|
|
if (dev->radio_dev) {
|
|
if (video_is_registered(dev->radio_dev))
|
|
video_unregister_device(dev->radio_dev);
|
|
else
|
|
video_device_release(dev->radio_dev);
|
|
dev->radio_dev = NULL;
|
|
}
|
|
if (dev->vbi_dev) {
|
|
em28xx_info("V4L2 device %s deregistered\n",
|
|
video_device_node_name(dev->vbi_dev));
|
|
if (video_is_registered(dev->vbi_dev))
|
|
video_unregister_device(dev->vbi_dev);
|
|
else
|
|
video_device_release(dev->vbi_dev);
|
|
dev->vbi_dev = NULL;
|
|
}
|
|
if (dev->vdev) {
|
|
em28xx_info("V4L2 device %s deregistered\n",
|
|
video_device_node_name(dev->vdev));
|
|
if (video_is_registered(dev->vdev))
|
|
video_unregister_device(dev->vdev);
|
|
else
|
|
video_device_release(dev->vdev);
|
|
dev->vdev = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* em28xx_v4l2_close()
|
|
* stops streaming and deallocates all resources allocated by the v4l2
|
|
* calls and ioctls
|
|
*/
|
|
static int em28xx_v4l2_close(struct file *filp)
|
|
{
|
|
struct em28xx_fh *fh = filp->private_data;
|
|
struct em28xx *dev = fh->dev;
|
|
int errCode;
|
|
|
|
em28xx_videodbg("users=%d\n", dev->users);
|
|
|
|
mutex_lock(&dev->lock);
|
|
vb2_fop_release(filp);
|
|
|
|
if (dev->users == 1) {
|
|
/* the device is already disconnect,
|
|
free the remaining resources */
|
|
if (dev->disconnected) {
|
|
em28xx_release_resources(dev);
|
|
kfree(dev->alt_max_pkt_size_isoc);
|
|
mutex_unlock(&dev->lock);
|
|
kfree(dev);
|
|
return 0;
|
|
}
|
|
|
|
/* Save some power by putting tuner to sleep */
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
|
|
|
|
/* do this before setting alternate! */
|
|
em28xx_set_mode(dev, EM28XX_SUSPEND);
|
|
|
|
/* set alternate 0 */
|
|
dev->alt = 0;
|
|
em28xx_videodbg("setting alternate 0\n");
|
|
errCode = usb_set_interface(dev->udev, 0, 0);
|
|
if (errCode < 0) {
|
|
em28xx_errdev("cannot change alternate number to "
|
|
"0 (error=%i)\n", errCode);
|
|
}
|
|
}
|
|
|
|
dev->users--;
|
|
mutex_unlock(&dev->lock);
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_file_operations em28xx_v4l_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = em28xx_v4l2_open,
|
|
.release = em28xx_v4l2_close,
|
|
.read = vb2_fop_read,
|
|
.poll = vb2_fop_poll,
|
|
.mmap = vb2_fop_mmap,
|
|
.unlocked_ioctl = video_ioctl2,
|
|
};
|
|
|
|
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_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
|
|
.vidioc_try_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
|
|
.vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap,
|
|
.vidioc_enum_framesizes = vidioc_enum_framesizes,
|
|
.vidioc_g_audio = vidioc_g_audio,
|
|
.vidioc_s_audio = vidioc_s_audio,
|
|
.vidioc_cropcap = vidioc_cropcap,
|
|
|
|
.vidioc_reqbufs = vb2_ioctl_reqbufs,
|
|
.vidioc_create_bufs = vb2_ioctl_create_bufs,
|
|
.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
|
|
.vidioc_querybuf = vb2_ioctl_querybuf,
|
|
.vidioc_qbuf = vb2_ioctl_qbuf,
|
|
.vidioc_dqbuf = vb2_ioctl_dqbuf,
|
|
|
|
.vidioc_g_std = vidioc_g_std,
|
|
.vidioc_querystd = vidioc_querystd,
|
|
.vidioc_s_std = vidioc_s_std,
|
|
.vidioc_g_parm = vidioc_g_parm,
|
|
.vidioc_s_parm = vidioc_s_parm,
|
|
.vidioc_enum_input = vidioc_enum_input,
|
|
.vidioc_g_input = vidioc_g_input,
|
|
.vidioc_s_input = vidioc_s_input,
|
|
.vidioc_streamon = vb2_ioctl_streamon,
|
|
.vidioc_streamoff = vb2_ioctl_streamoff,
|
|
.vidioc_g_tuner = vidioc_g_tuner,
|
|
.vidioc_s_tuner = vidioc_s_tuner,
|
|
.vidioc_g_frequency = vidioc_g_frequency,
|
|
.vidioc_s_frequency = vidioc_s_frequency,
|
|
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
|
|
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.vidioc_g_register = vidioc_g_register,
|
|
.vidioc_s_register = vidioc_s_register,
|
|
.vidioc_g_chip_ident = vidioc_g_chip_ident,
|
|
#endif
|
|
};
|
|
|
|
static const struct video_device em28xx_video_template = {
|
|
.fops = &em28xx_v4l_fops,
|
|
.release = video_device_release_empty,
|
|
.ioctl_ops = &video_ioctl_ops,
|
|
|
|
.tvnorms = V4L2_STD_ALL,
|
|
};
|
|
|
|
static const struct v4l2_file_operations radio_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = em28xx_v4l2_open,
|
|
.release = em28xx_v4l2_close,
|
|
.unlocked_ioctl = video_ioctl2,
|
|
};
|
|
|
|
static const struct v4l2_ioctl_ops radio_ioctl_ops = {
|
|
.vidioc_querycap = vidioc_querycap,
|
|
.vidioc_g_tuner = radio_g_tuner,
|
|
.vidioc_s_tuner = radio_s_tuner,
|
|
.vidioc_g_frequency = vidioc_g_frequency,
|
|
.vidioc_s_frequency = vidioc_s_frequency,
|
|
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
|
|
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.vidioc_g_register = vidioc_g_register,
|
|
.vidioc_s_register = vidioc_s_register,
|
|
#endif
|
|
};
|
|
|
|
static struct video_device em28xx_radio_template = {
|
|
.name = "em28xx-radio",
|
|
.fops = &radio_fops,
|
|
.ioctl_ops = &radio_ioctl_ops,
|
|
};
|
|
|
|
/******************************** usb interface ******************************/
|
|
|
|
|
|
|
|
static struct video_device *em28xx_vdev_init(struct em28xx *dev,
|
|
const struct video_device *template,
|
|
const char *type_name)
|
|
{
|
|
struct video_device *vfd;
|
|
|
|
vfd = video_device_alloc();
|
|
if (NULL == vfd)
|
|
return NULL;
|
|
|
|
*vfd = *template;
|
|
vfd->v4l2_dev = &dev->v4l2_dev;
|
|
vfd->debug = video_debug;
|
|
vfd->lock = &dev->lock;
|
|
set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
|
|
if (dev->board.is_webcam)
|
|
vfd->tvnorms = 0;
|
|
|
|
snprintf(vfd->name, sizeof(vfd->name), "%s %s",
|
|
dev->name, type_name);
|
|
|
|
video_set_drvdata(vfd, dev);
|
|
return vfd;
|
|
}
|
|
|
|
int em28xx_register_analog_devices(struct em28xx *dev)
|
|
{
|
|
u8 val;
|
|
int ret;
|
|
unsigned int maxw;
|
|
|
|
printk(KERN_INFO "%s: v4l2 driver version %s\n",
|
|
dev->name, EM28XX_VERSION);
|
|
|
|
/* set default norm */
|
|
dev->norm = V4L2_STD_PAL;
|
|
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
|
|
dev->interlaced = EM28XX_INTERLACED_DEFAULT;
|
|
|
|
/* Analog specific initialization */
|
|
dev->format = &format[0];
|
|
|
|
maxw = norm_maxw(dev);
|
|
/* MaxPacketSize for em2800 is too small to capture at full resolution
|
|
* use half of maxw as the scaler can only scale to 50% */
|
|
if (dev->board.is_em2800)
|
|
maxw /= 2;
|
|
|
|
em28xx_set_video_format(dev, format[0].fourcc,
|
|
maxw, norm_maxh(dev));
|
|
|
|
video_mux(dev, 0);
|
|
|
|
/* Audio defaults */
|
|
dev->mute = 1;
|
|
dev->volume = 0x1f;
|
|
|
|
/* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
|
|
val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
|
|
em28xx_write_reg(dev, EM28XX_R0F_XCLK,
|
|
(EM28XX_XCLK_AUDIO_UNMUTE | val));
|
|
|
|
em28xx_set_outfmt(dev);
|
|
em28xx_colorlevels_set_default(dev);
|
|
em28xx_compression_disable(dev);
|
|
|
|
/* allocate and fill video video_device struct */
|
|
dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
|
|
if (!dev->vdev) {
|
|
em28xx_errdev("cannot allocate video_device.\n");
|
|
return -ENODEV;
|
|
}
|
|
dev->vdev->queue = &dev->vb_vidq;
|
|
dev->vdev->queue->lock = &dev->vb_queue_lock;
|
|
|
|
/* register v4l2 video video_device */
|
|
ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
|
|
video_nr[dev->devno]);
|
|
if (ret) {
|
|
em28xx_errdev("unable to register video device (error=%i).\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Allocate and fill vbi video_device struct */
|
|
if (em28xx_vbi_supported(dev) == 1) {
|
|
dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
|
|
"vbi");
|
|
|
|
dev->vbi_dev->queue = &dev->vb_vbiq;
|
|
dev->vbi_dev->queue->lock = &dev->vb_vbi_queue_lock;
|
|
|
|
/* register v4l2 vbi video_device */
|
|
ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
|
|
vbi_nr[dev->devno]);
|
|
if (ret < 0) {
|
|
em28xx_errdev("unable to register vbi device\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
|
|
dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
|
|
"radio");
|
|
if (!dev->radio_dev) {
|
|
em28xx_errdev("cannot allocate video_device.\n");
|
|
return -ENODEV;
|
|
}
|
|
ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
|
|
radio_nr[dev->devno]);
|
|
if (ret < 0) {
|
|
em28xx_errdev("can't register radio device\n");
|
|
return ret;
|
|
}
|
|
em28xx_info("Registered radio device as %s\n",
|
|
video_device_node_name(dev->radio_dev));
|
|
}
|
|
|
|
em28xx_info("V4L2 video device registered as %s\n",
|
|
video_device_node_name(dev->vdev));
|
|
|
|
if (dev->vbi_dev)
|
|
em28xx_info("V4L2 VBI device registered as %s\n",
|
|
video_device_node_name(dev->vbi_dev));
|
|
|
|
return 0;
|
|
}
|