2301 lines
55 KiB
C
2301 lines
55 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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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/version.h>
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#include <linux/mm.h>
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#include <linux/mutex.h>
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#include "em28xx.h"
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#include <media/v4l2-common.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_NAME "em28xx"
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#define DRIVER_DESC "Empia em28xx based USB video device driver"
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#define EM28XX_VERSION_CODE KERNEL_VERSION(0, 1, 0)
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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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static LIST_HEAD(em28xx_devlist);
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static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
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static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
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static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
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static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
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module_param_array(card, int, NULL, 0444);
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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(card, "card type");
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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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/* Bitmask marking allocated devices from 0 to EM28XX_MAXBOARDS */
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static unsigned long em28xx_devused;
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/* supported controls */
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/* Common to all boards */
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static struct v4l2_queryctrl em28xx_qctrl[] = {
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{
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.id = V4L2_CID_AUDIO_VOLUME,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Volume",
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.minimum = 0x0,
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.maximum = 0x1f,
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.step = 0x1,
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.default_value = 0x1f,
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.flags = 0,
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}, {
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.id = V4L2_CID_AUDIO_MUTE,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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.name = "Mute",
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.minimum = 0,
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.maximum = 1,
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.step = 1,
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.default_value = 1,
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.flags = 0,
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}
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};
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static struct usb_driver em28xx_usb_driver;
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/* ------------------------------------------------------------------
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DMA and thread functions
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------------------------------------------------------------------*/
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/*
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* Announces that a buffer were filled and request the next
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*/
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static inline void buffer_filled(struct em28xx *dev,
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struct em28xx_dmaqueue *dma_q,
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struct em28xx_buffer *buf)
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{
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/* Advice that buffer was filled */
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em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
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buf->vb.state = VIDEOBUF_DONE;
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buf->vb.field_count++;
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do_gettimeofday(&buf->vb.ts);
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dev->isoc_ctl.buf = NULL;
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list_del(&buf->vb.queue);
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wake_up(&buf->vb.done);
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}
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/*
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* Identify the buffer header type and properly handles
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*/
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static void em28xx_copy_video(struct em28xx *dev,
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struct em28xx_dmaqueue *dma_q,
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struct em28xx_buffer *buf,
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unsigned char *p,
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unsigned char *outp, 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 (dma_q->pos + len > buf->vb.size)
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len = buf->vb.size - dma_q->pos;
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if (p[0] != 0x88 && p[0] != 0x22) {
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em28xx_isocdbg("frame is not complete\n");
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len += 4;
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} else
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p += 4;
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startread = p;
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remain = len;
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/* Interlaces frame */
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if (buf->top_field)
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fieldstart = outp;
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else
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fieldstart = outp + bytesperline;
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linesdone = dma_q->pos / bytesperline;
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currlinedone = dma_q->pos % bytesperline;
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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 *)outp + buf->vb.size) {
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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 *)outp + buf->vb.size));
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lencopy = remain = (char *)outp + buf->vb.size - (char *)startwrite;
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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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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 *)outp + buf->vb.size) {
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em28xx_isocdbg("Overflow of %zi bytes past buffer end (2)\n",
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((char *)startwrite + lencopy) -
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((char *)outp + buf->vb.size));
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lencopy = remain = (char *)outp + buf->vb.size -
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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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dma_q->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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* video-buf generic routine to get the next available buffer
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*/
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static inline void get_next_buf(struct em28xx_dmaqueue *dma_q,
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struct em28xx_buffer **buf)
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{
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struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
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char *outp;
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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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dev->isoc_ctl.buf = NULL;
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*buf = NULL;
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return;
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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, vb.queue);
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/* Cleans up buffer - Usefull for testing for frame/URB loss */
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outp = videobuf_to_vmalloc(&(*buf)->vb);
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memset(outp, 0, (*buf)->vb.size);
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dev->isoc_ctl.buf = *buf;
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return;
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}
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/*
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* Controls the isoc copy of each urb packet
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*/
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static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
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{
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struct em28xx_buffer *buf;
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struct em28xx_dmaqueue *dma_q = urb->context;
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unsigned char *outp = NULL;
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int i, len = 0, rc = 1;
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unsigned char *p;
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if (!dev)
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return 0;
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if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
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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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if (urb->status == -ENOENT)
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return 0;
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}
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buf = dev->isoc_ctl.buf;
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if (buf != NULL)
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outp = videobuf_to_vmalloc(&buf->vb);
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for (i = 0; i < urb->number_of_packets; i++) {
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int status = urb->iso_frame_desc[i].status;
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if (status < 0) {
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print_err_status(dev, 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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len = urb->iso_frame_desc[i].actual_length - 4;
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if (urb->iso_frame_desc[i].actual_length <= 0) {
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/* em28xx_isocdbg("packet %d is empty",i); - spammy */
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continue;
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}
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if (urb->iso_frame_desc[i].actual_length >
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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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p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
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/* FIXME: incomplete buffer checks where removed to make
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logic simpler. Impacts of those changes should be evaluated
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*/
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if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
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em28xx_isocdbg("VBI HEADER!!!\n");
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/* FIXME: Should add vbi copy */
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continue;
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}
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if (p[0] == 0x22 && p[1] == 0x5a) {
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em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
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len, (p[2] & 1)? "odd" : "even");
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if (!(p[2] & 1)) {
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if (buf != NULL)
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buffer_filled(dev, dma_q, buf);
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get_next_buf(dma_q, &buf);
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if (buf == NULL)
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outp = NULL;
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else
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outp = videobuf_to_vmalloc(&buf->vb);
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}
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if (buf != NULL) {
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if (p[2] & 1)
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buf->top_field = 0;
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else
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buf->top_field = 1;
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}
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dma_q->pos = 0;
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}
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if (buf != NULL)
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em28xx_copy_video(dev, dma_q, buf, p, outp, len);
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}
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return rc;
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}
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/* ------------------------------------------------------------------
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Videobuf operations
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------------------------------------------------------------------*/
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static int
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buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
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{
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struct em28xx_fh *fh = vq->priv_data;
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struct em28xx *dev = fh->dev;
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struct v4l2_frequency f;
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*size = 16 * fh->dev->width * fh->dev->height >> 3;
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if (0 == *count)
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*count = EM28XX_DEF_BUF;
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if (*count < EM28XX_MIN_BUF)
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*count = EM28XX_MIN_BUF;
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/* Ask tuner to go to analog mode */
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memset(&f, 0, sizeof(f));
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f.frequency = dev->ctl_freq;
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em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f);
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return 0;
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}
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|
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/* This is called *without* dev->slock held; please keep it that way */
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static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
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{
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struct em28xx_fh *fh = vq->priv_data;
|
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struct em28xx *dev = fh->dev;
|
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unsigned long flags = 0;
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if (in_interrupt())
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BUG();
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|
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/* We used to wait for the buffer to finish here, but this didn't work
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because, as we were keeping the state as VIDEOBUF_QUEUED,
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videobuf_queue_cancel marked it as finished for us.
|
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(Also, it could wedge forever if the hardware was misconfigured.)
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|
|
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This should be safe; by the time we get here, the buffer isn't
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queued anymore. If we ever start marking the buffers as
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VIDEOBUF_ACTIVE, it won't be, though.
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*/
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spin_lock_irqsave(&dev->slock, flags);
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if (dev->isoc_ctl.buf == buf)
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dev->isoc_ctl.buf = NULL;
|
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spin_unlock_irqrestore(&dev->slock, flags);
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|
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videobuf_vmalloc_free(&buf->vb);
|
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buf->vb.state = VIDEOBUF_NEEDS_INIT;
|
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}
|
|
|
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static int
|
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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 em28xx_fh *fh = vq->priv_data;
|
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struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
|
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struct em28xx *dev = fh->dev;
|
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int rc = 0, urb_init = 0;
|
|
|
|
/* FIXME: It assumes depth = 16 */
|
|
/* The only currently supported format is 16 bits/pixel */
|
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buf->vb.size = 16 * dev->width * dev->height >> 3;
|
|
|
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if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
|
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return -EINVAL;
|
|
|
|
buf->vb.width = dev->width;
|
|
buf->vb.height = dev->height;
|
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buf->vb.field = field;
|
|
|
|
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
|
|
rc = videobuf_iolock(vq, &buf->vb, NULL);
|
|
if (rc < 0)
|
|
goto fail;
|
|
}
|
|
|
|
if (!dev->isoc_ctl.num_bufs)
|
|
urb_init = 1;
|
|
|
|
if (urb_init) {
|
|
rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
|
|
EM28XX_NUM_BUFS, dev->max_pkt_size,
|
|
em28xx_isoc_copy);
|
|
if (rc < 0)
|
|
goto fail;
|
|
}
|
|
|
|
buf->vb.state = VIDEOBUF_PREPARED;
|
|
return 0;
|
|
|
|
fail:
|
|
free_buffer(vq, buf);
|
|
return rc;
|
|
}
|
|
|
|
static void
|
|
buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
|
|
{
|
|
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
|
|
struct em28xx_fh *fh = vq->priv_data;
|
|
struct em28xx *dev = fh->dev;
|
|
struct em28xx_dmaqueue *vidq = &dev->vidq;
|
|
|
|
buf->vb.state = VIDEOBUF_QUEUED;
|
|
list_add_tail(&buf->vb.queue, &vidq->active);
|
|
|
|
}
|
|
|
|
static void buffer_release(struct videobuf_queue *vq,
|
|
struct videobuf_buffer *vb)
|
|
{
|
|
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
|
|
struct em28xx_fh *fh = vq->priv_data;
|
|
struct em28xx *dev = (struct em28xx *)fh->dev;
|
|
|
|
em28xx_isocdbg("em28xx: called buffer_release\n");
|
|
|
|
free_buffer(vq, buf);
|
|
}
|
|
|
|
static struct videobuf_queue_ops em28xx_video_qops = {
|
|
.buf_setup = buffer_setup,
|
|
.buf_prepare = buffer_prepare,
|
|
.buf_queue = buffer_queue,
|
|
.buf_release = buffer_release,
|
|
};
|
|
|
|
/********************* v4l2 interface **************************************/
|
|
|
|
/*
|
|
* em28xx_config()
|
|
* inits registers with sane defaults
|
|
*/
|
|
static int em28xx_config(struct em28xx *dev)
|
|
{
|
|
|
|
/* Sets I2C speed to 100 KHz */
|
|
if (!dev->is_em2800)
|
|
em28xx_write_regs_req(dev, 0x00, 0x06, "\x40", 1);
|
|
|
|
/* enable vbi capturing */
|
|
|
|
/* em28xx_write_regs_req(dev, 0x00, 0x0e, "\xC0", 1); audio register */
|
|
/* em28xx_write_regs_req(dev, 0x00, 0x0f, "\x80", 1); clk register */
|
|
em28xx_write_regs_req(dev, 0x00, 0x11, "\x51", 1);
|
|
|
|
dev->mute = 1; /* maybe not the right place... */
|
|
dev->volume = 0x1f;
|
|
|
|
em28xx_outfmt_set_yuv422(dev);
|
|
em28xx_colorlevels_set_default(dev);
|
|
em28xx_compression_disable(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* em28xx_config_i2c()
|
|
* configure i2c attached devices
|
|
*/
|
|
static void em28xx_config_i2c(struct em28xx *dev)
|
|
{
|
|
struct v4l2_routing route;
|
|
|
|
route.input = INPUT(dev->ctl_input)->vmux;
|
|
route.output = 0;
|
|
em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, NULL);
|
|
em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
|
|
em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL);
|
|
}
|
|
|
|
static void video_mux(struct em28xx *dev, int index)
|
|
{
|
|
struct v4l2_routing route;
|
|
|
|
route.input = INPUT(index)->vmux;
|
|
route.output = 0;
|
|
dev->ctl_input = index;
|
|
dev->ctl_ainput = INPUT(index)->amux;
|
|
|
|
em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
|
|
|
|
if (dev->has_msp34xx) {
|
|
if (dev->i2s_speed) {
|
|
em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ,
|
|
&dev->i2s_speed);
|
|
}
|
|
route.input = dev->ctl_ainput;
|
|
route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
|
|
/* Note: this is msp3400 specific */
|
|
em28xx_i2c_call_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING,
|
|
&route);
|
|
}
|
|
|
|
em28xx_audio_analog_set(dev);
|
|
}
|
|
|
|
/* Usage lock check functions */
|
|
static int res_get(struct em28xx_fh *fh)
|
|
{
|
|
struct em28xx *dev = fh->dev;
|
|
int rc = 0;
|
|
|
|
/* This instance already has stream_on */
|
|
if (fh->stream_on)
|
|
return rc;
|
|
|
|
if (dev->stream_on)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&dev->lock);
|
|
dev->stream_on = 1;
|
|
fh->stream_on = 1;
|
|
mutex_unlock(&dev->lock);
|
|
return rc;
|
|
}
|
|
|
|
static int res_check(struct em28xx_fh *fh)
|
|
{
|
|
return (fh->stream_on);
|
|
}
|
|
|
|
static void res_free(struct em28xx_fh *fh)
|
|
{
|
|
struct em28xx *dev = fh->dev;
|
|
|
|
mutex_lock(&dev->lock);
|
|
fh->stream_on = 0;
|
|
dev->stream_on = 0;
|
|
mutex_unlock(&dev->lock);
|
|
}
|
|
|
|
/*
|
|
* em28xx_get_ctrl()
|
|
* return the current saturation, brightness or contrast, mute state
|
|
*/
|
|
static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
|
|
{
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
ctrl->value = dev->mute;
|
|
return 0;
|
|
case V4L2_CID_AUDIO_VOLUME:
|
|
ctrl->value = dev->volume;
|
|
return 0;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* em28xx_set_ctrl()
|
|
* mute or set new saturation, brightness or contrast
|
|
*/
|
|
static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
|
|
{
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
if (ctrl->value != dev->mute) {
|
|
dev->mute = ctrl->value;
|
|
return em28xx_audio_analog_set(dev);
|
|
}
|
|
return 0;
|
|
case V4L2_CID_AUDIO_VOLUME:
|
|
dev->volume = ctrl->value;
|
|
return em28xx_audio_analog_set(dev);
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int check_dev(struct em28xx *dev)
|
|
{
|
|
if (dev->state & DEV_DISCONNECTED) {
|
|
em28xx_errdev("v4l2 ioctl: device not present\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (dev->state & DEV_MISCONFIGURED) {
|
|
em28xx_errdev("v4l2 ioctl: device is misconfigured; "
|
|
"close and open it again\n");
|
|
return -EIO;
|
|
}
|
|
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;
|
|
|
|
mutex_lock(&dev->lock);
|
|
|
|
f->fmt.pix.width = dev->width;
|
|
f->fmt.pix.height = dev->height;
|
|
f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
|
|
f->fmt.pix.bytesperline = dev->width * 2;
|
|
f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
|
|
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
|
|
|
|
/* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
|
|
f->fmt.pix.field = dev->interlaced ?
|
|
V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
|
|
|
|
mutex_unlock(&dev->lock);
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
int width = f->fmt.pix.width;
|
|
int height = f->fmt.pix.height;
|
|
unsigned int maxw = norm_maxw(dev);
|
|
unsigned int maxh = norm_maxh(dev);
|
|
unsigned int hscale, vscale;
|
|
|
|
/* width must even because of the YUYV format
|
|
height must be even because of interlacing */
|
|
height &= 0xfffe;
|
|
width &= 0xfffe;
|
|
|
|
if (height < 32)
|
|
height = 32;
|
|
if (height > maxh)
|
|
height = maxh;
|
|
if (width < 48)
|
|
width = 48;
|
|
if (width > maxw)
|
|
width = maxw;
|
|
|
|
mutex_lock(&dev->lock);
|
|
|
|
if (dev->is_em2800) {
|
|
/* the em2800 can only scale down to 50% */
|
|
if (height % (maxh / 2))
|
|
height = maxh;
|
|
if (width % (maxw / 2))
|
|
width = maxw;
|
|
/* according to empiatech support */
|
|
/* the MaxPacketSize is to small to support */
|
|
/* framesizes larger than 640x480 @ 30 fps */
|
|
/* or 640x576 @ 25 fps. As this would cut */
|
|
/* of a part of the image we prefer */
|
|
/* 360x576 or 360x480 for now */
|
|
if (width == maxw && height == maxh)
|
|
width /= 2;
|
|
}
|
|
|
|
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 = V4L2_PIX_FMT_YUYV;
|
|
f->fmt.pix.bytesperline = width * 2;
|
|
f->fmt.pix.sizeimage = width * 2 * height;
|
|
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
|
|
f->fmt.pix.field = V4L2_FIELD_INTERLACED;
|
|
|
|
mutex_unlock(&dev->lock);
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
vidioc_try_fmt_vid_cap(file, priv, f);
|
|
|
|
mutex_lock(&dev->lock);
|
|
|
|
if (videobuf_queue_is_busy(&fh->vb_vidq)) {
|
|
em28xx_errdev("%s queue busy\n", __func__);
|
|
rc = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
if (dev->stream_on && !fh->stream_on) {
|
|
em28xx_errdev("%s device in use by another fh\n", __func__);
|
|
rc = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
/* 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_set_alternate(dev);
|
|
em28xx_resolution_set(dev);
|
|
|
|
rc = 0;
|
|
|
|
out:
|
|
mutex_unlock(&dev->lock);
|
|
return rc;
|
|
}
|
|
|
|
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;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
mutex_lock(&dev->lock);
|
|
dev->norm = *norm;
|
|
mutex_unlock(&dev->lock);
|
|
|
|
/* Adjusts width/height, if needed */
|
|
f.fmt.pix.width = dev->width;
|
|
f.fmt.pix.height = dev->height;
|
|
vidioc_try_fmt_vid_cap(file, priv, &f);
|
|
|
|
mutex_lock(&dev->lock);
|
|
|
|
/* 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);
|
|
em28xx_i2c_call_clients(dev, VIDIOC_S_STD, &dev->norm);
|
|
|
|
mutex_unlock(&dev->lock);
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
|
|
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;
|
|
|
|
mutex_lock(&dev->lock);
|
|
|
|
video_mux(dev, i);
|
|
|
|
mutex_unlock(&dev->lock);
|
|
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;
|
|
unsigned int index = a->index;
|
|
|
|
if (a->index > 1)
|
|
return -EINVAL;
|
|
|
|
index = dev->ctl_ainput;
|
|
|
|
if (index == 0)
|
|
strcpy(a->name, "Television");
|
|
else
|
|
strcpy(a->name, "Line In");
|
|
|
|
a->capability = V4L2_AUDCAP_STEREO;
|
|
a->index = index;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
|
|
if (a->index != dev->ctl_ainput)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_queryctrl(struct file *file, void *priv,
|
|
struct v4l2_queryctrl *qc)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int id = qc->id;
|
|
int i;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
memset(qc, 0, sizeof(*qc));
|
|
|
|
qc->id = id;
|
|
|
|
if (!dev->has_msp34xx) {
|
|
for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
|
|
if (qc->id && qc->id == em28xx_qctrl[i].id) {
|
|
memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
mutex_lock(&dev->lock);
|
|
em28xx_i2c_call_clients(dev, VIDIOC_QUERYCTRL, qc);
|
|
mutex_unlock(&dev->lock);
|
|
|
|
if (qc->type)
|
|
return 0;
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int vidioc_g_ctrl(struct file *file, void *priv,
|
|
struct v4l2_control *ctrl)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
mutex_lock(&dev->lock);
|
|
|
|
if (!dev->has_msp34xx)
|
|
rc = em28xx_get_ctrl(dev, ctrl);
|
|
else
|
|
rc = -EINVAL;
|
|
|
|
if (rc == -EINVAL) {
|
|
em28xx_i2c_call_clients(dev, VIDIOC_G_CTRL, ctrl);
|
|
rc = 0;
|
|
}
|
|
|
|
mutex_unlock(&dev->lock);
|
|
return rc;
|
|
}
|
|
|
|
static int vidioc_s_ctrl(struct file *file, void *priv,
|
|
struct v4l2_control *ctrl)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
u8 i;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
mutex_lock(&dev->lock);
|
|
|
|
if (dev->has_msp34xx)
|
|
em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl);
|
|
else {
|
|
rc = 1;
|
|
for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
|
|
if (ctrl->id == em28xx_qctrl[i].id) {
|
|
if (ctrl->value < em28xx_qctrl[i].minimum ||
|
|
ctrl->value > em28xx_qctrl[i].maximum) {
|
|
rc = -ERANGE;
|
|
break;
|
|
}
|
|
|
|
rc = em28xx_set_ctrl(dev, ctrl);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Control not found - try to send it to the attached devices */
|
|
if (rc == 1) {
|
|
em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl);
|
|
rc = 0;
|
|
}
|
|
|
|
mutex_unlock(&dev->lock);
|
|
return rc;
|
|
}
|
|
|
|
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");
|
|
|
|
mutex_lock(&dev->lock);
|
|
|
|
em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t);
|
|
|
|
mutex_unlock(&dev->lock);
|
|
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;
|
|
|
|
mutex_lock(&dev->lock);
|
|
|
|
em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t);
|
|
|
|
mutex_unlock(&dev->lock);
|
|
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;
|
|
|
|
f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
|
|
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;
|
|
|
|
if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
|
|
return -EINVAL;
|
|
if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&dev->lock);
|
|
|
|
dev->ctl_freq = f->frequency;
|
|
em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f);
|
|
|
|
mutex_unlock(&dev->lock);
|
|
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_register(struct file *file, void *priv,
|
|
struct v4l2_register *reg)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int ret;
|
|
|
|
if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
|
|
return -EINVAL;
|
|
|
|
if (em28xx_reg_len(reg->reg) == 1) {
|
|
ret = em28xx_read_reg(dev, reg->reg);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
reg->val = ret;
|
|
} else {
|
|
__le64 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 = le64_to_cpu(val);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_register(struct file *file, void *priv,
|
|
struct v4l2_register *reg)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
__le64 buf;
|
|
|
|
buf = cpu_to_le64(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_streamon(struct file *file, void *priv,
|
|
enum v4l2_buf_type type)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
|
|
if (unlikely(res_get(fh) < 0))
|
|
return -EBUSY;
|
|
|
|
return (videobuf_streamon(&fh->vb_vidq));
|
|
}
|
|
|
|
static int vidioc_streamoff(struct file *file, void *priv,
|
|
enum v4l2_buf_type type)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
if (type != fh->type)
|
|
return -EINVAL;
|
|
|
|
videobuf_streamoff(&fh->vb_vidq);
|
|
res_free(fh);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_querycap(struct file *file, void *priv,
|
|
struct v4l2_capability *cap)
|
|
{
|
|
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));
|
|
strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
|
|
|
|
cap->version = EM28XX_VERSION_CODE;
|
|
|
|
cap->capabilities =
|
|
V4L2_CAP_SLICED_VBI_CAPTURE |
|
|
V4L2_CAP_VIDEO_CAPTURE |
|
|
V4L2_CAP_AUDIO |
|
|
V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
|
|
|
|
if (dev->tuner_type != TUNER_ABSENT)
|
|
cap->capabilities |= V4L2_CAP_TUNER;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_fmtdesc *fmtd)
|
|
{
|
|
if (fmtd->index != 0)
|
|
return -EINVAL;
|
|
|
|
fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
strcpy(fmtd->description, "Packed YUY2");
|
|
fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
|
|
memset(fmtd->reserved, 0, sizeof(fmtd->reserved));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Sliced VBI ioctls */
|
|
static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
mutex_lock(&dev->lock);
|
|
|
|
f->fmt.sliced.service_set = 0;
|
|
|
|
em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f);
|
|
|
|
if (f->fmt.sliced.service_set == 0)
|
|
rc = -EINVAL;
|
|
|
|
mutex_unlock(&dev->lock);
|
|
return rc;
|
|
}
|
|
|
|
static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
mutex_lock(&dev->lock);
|
|
em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f);
|
|
mutex_unlock(&dev->lock);
|
|
|
|
if (f->fmt.sliced.service_set == 0)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int vidioc_reqbufs(struct file *file, void *priv,
|
|
struct v4l2_requestbuffers *rb)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
return (videobuf_reqbufs(&fh->vb_vidq, rb));
|
|
}
|
|
|
|
static int vidioc_querybuf(struct file *file, void *priv,
|
|
struct v4l2_buffer *b)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
return (videobuf_querybuf(&fh->vb_vidq, b));
|
|
}
|
|
|
|
static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
return (videobuf_qbuf(&fh->vb_vidq, b));
|
|
}
|
|
|
|
static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
return (videobuf_dqbuf(&fh->vb_vidq, b,
|
|
file->f_flags & O_NONBLOCK));
|
|
}
|
|
|
|
#ifdef CONFIG_VIDEO_V4L1_COMPAT
|
|
static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
|
|
{
|
|
struct em28xx_fh *fh = priv;
|
|
|
|
return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
|
|
}
|
|
#endif
|
|
|
|
|
|
/* ----------------------------------------------------------- */
|
|
/* RADIO ESPECIFIC IOCTLS */
|
|
/* ----------------------------------------------------------- */
|
|
|
|
static int radio_querycap(struct file *file, void *priv,
|
|
struct v4l2_capability *cap)
|
|
{
|
|
struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
|
|
|
|
strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
|
|
strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
|
|
strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
|
|
|
|
cap->version = EM28XX_VERSION_CODE;
|
|
cap->capabilities = V4L2_CAP_TUNER;
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
|
|
em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t);
|
|
return 0;
|
|
}
|
|
|
|
static int radio_enum_input(struct file *file, void *priv,
|
|
struct v4l2_input *i)
|
|
{
|
|
if (i->index != 0)
|
|
return -EINVAL;
|
|
strcpy(i->name, "Radio");
|
|
i->type = V4L2_INPUT_TYPE_TUNER;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
|
|
{
|
|
if (unlikely(a->index))
|
|
return -EINVAL;
|
|
|
|
strcpy(a->name, "Radio");
|
|
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;
|
|
|
|
em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int radio_s_audio(struct file *file, void *fh,
|
|
struct v4l2_audio *a)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int radio_s_input(struct file *file, void *fh, unsigned int i)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int radio_queryctrl(struct file *file, void *priv,
|
|
struct v4l2_queryctrl *qc)
|
|
{
|
|
int i;
|
|
|
|
if (qc->id < V4L2_CID_BASE ||
|
|
qc->id >= V4L2_CID_LASTP1)
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
|
|
if (qc->id && qc->id == em28xx_qctrl[i].id) {
|
|
memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* em28xx_v4l2_open()
|
|
* inits the device and starts isoc transfer
|
|
*/
|
|
static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
|
|
{
|
|
int minor = iminor(inode);
|
|
int errCode = 0, radio = 0;
|
|
struct em28xx *h, *dev = NULL;
|
|
struct em28xx_fh *fh;
|
|
enum v4l2_buf_type fh_type = 0;
|
|
|
|
list_for_each_entry(h, &em28xx_devlist, devlist) {
|
|
if (h->vdev->minor == minor) {
|
|
dev = h;
|
|
fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
}
|
|
if (h->vbi_dev->minor == minor) {
|
|
dev = h;
|
|
fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
|
|
}
|
|
if (h->radio_dev &&
|
|
h->radio_dev->minor == minor) {
|
|
radio = 1;
|
|
dev = h;
|
|
}
|
|
}
|
|
if (NULL == dev)
|
|
return -ENODEV;
|
|
|
|
em28xx_videodbg("open minor=%d type=%s users=%d\n",
|
|
minor, v4l2_type_names[fh_type], dev->users);
|
|
|
|
|
|
fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
|
|
if (!fh) {
|
|
em28xx_errdev("em28xx-video.c: Out of memory?!\n");
|
|
return -ENOMEM;
|
|
}
|
|
mutex_lock(&dev->lock);
|
|
fh->dev = dev;
|
|
fh->radio = radio;
|
|
fh->type = fh_type;
|
|
filp->private_data = fh;
|
|
|
|
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
|
|
dev->width = norm_maxw(dev);
|
|
dev->height = norm_maxh(dev);
|
|
dev->hscale = 0;
|
|
dev->vscale = 0;
|
|
|
|
em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
|
|
em28xx_set_alternate(dev);
|
|
em28xx_resolution_set(dev);
|
|
|
|
/* Needed, since GPIO might have disabled power of
|
|
some i2c device
|
|
*/
|
|
em28xx_config_i2c(dev);
|
|
|
|
}
|
|
if (fh->radio) {
|
|
em28xx_videodbg("video_open: setting radio device\n");
|
|
em28xx_i2c_call_clients(dev, AUDC_SET_RADIO, NULL);
|
|
}
|
|
|
|
dev->users++;
|
|
|
|
videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
|
|
NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED,
|
|
sizeof(struct em28xx_buffer), fh);
|
|
|
|
mutex_unlock(&dev->lock);
|
|
|
|
return errCode;
|
|
}
|
|
|
|
/*
|
|
* em28xx_realease_resources()
|
|
* unregisters the v4l2,i2c and usb devices
|
|
* called when the device gets disconected or at module unload
|
|
*/
|
|
static void em28xx_release_resources(struct em28xx *dev)
|
|
{
|
|
|
|
/*FIXME: I2C IR should be disconnected */
|
|
|
|
em28xx_info("V4L2 devices /dev/video%d and /dev/vbi%d deregistered\n",
|
|
dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN,
|
|
dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN);
|
|
list_del(&dev->devlist);
|
|
if (dev->sbutton_input_dev)
|
|
em28xx_deregister_snapshot_button(dev);
|
|
if (dev->radio_dev) {
|
|
if (-1 != dev->radio_dev->minor)
|
|
video_unregister_device(dev->radio_dev);
|
|
else
|
|
video_device_release(dev->radio_dev);
|
|
dev->radio_dev = NULL;
|
|
}
|
|
if (dev->vbi_dev) {
|
|
if (-1 != dev->vbi_dev->minor)
|
|
video_unregister_device(dev->vbi_dev);
|
|
else
|
|
video_device_release(dev->vbi_dev);
|
|
dev->vbi_dev = NULL;
|
|
}
|
|
if (dev->vdev) {
|
|
if (-1 != dev->vdev->minor)
|
|
video_unregister_device(dev->vdev);
|
|
else
|
|
video_device_release(dev->vdev);
|
|
dev->vdev = NULL;
|
|
}
|
|
em28xx_i2c_unregister(dev);
|
|
usb_put_dev(dev->udev);
|
|
|
|
/* Mark device as unused */
|
|
em28xx_devused &= ~(1<<dev->devno);
|
|
}
|
|
|
|
/*
|
|
* em28xx_v4l2_close()
|
|
* stops streaming and deallocates all resources allocated by the v4l2
|
|
* calls and ioctls
|
|
*/
|
|
static int em28xx_v4l2_close(struct inode *inode, struct file *filp)
|
|
{
|
|
struct em28xx_fh *fh = filp->private_data;
|
|
struct em28xx *dev = fh->dev;
|
|
int errCode;
|
|
|
|
em28xx_videodbg("users=%d\n", dev->users);
|
|
|
|
|
|
if (res_check(fh))
|
|
res_free(fh);
|
|
|
|
mutex_lock(&dev->lock);
|
|
|
|
if (dev->users == 1) {
|
|
videobuf_stop(&fh->vb_vidq);
|
|
videobuf_mmap_free(&fh->vb_vidq);
|
|
|
|
/* the device is already disconnect,
|
|
free the remaining resources */
|
|
if (dev->state & DEV_DISCONNECTED) {
|
|
em28xx_release_resources(dev);
|
|
mutex_unlock(&dev->lock);
|
|
kfree(dev);
|
|
return 0;
|
|
}
|
|
|
|
/* do this before setting alternate! */
|
|
em28xx_uninit_isoc(dev);
|
|
em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
|
|
|
|
/* 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);
|
|
}
|
|
}
|
|
kfree(fh);
|
|
dev->users--;
|
|
wake_up_interruptible_nr(&dev->open, 1);
|
|
mutex_unlock(&dev->lock);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* em28xx_v4l2_read()
|
|
* will allocate buffers when called for the first time
|
|
*/
|
|
static ssize_t
|
|
em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
|
|
loff_t *pos)
|
|
{
|
|
struct em28xx_fh *fh = filp->private_data;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
/* FIXME: read() is not prepared to allow changing the video
|
|
resolution while streaming. Seems a bug at em28xx_set_fmt
|
|
*/
|
|
|
|
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
|
|
if (unlikely(res_get(fh)))
|
|
return -EBUSY;
|
|
|
|
return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
|
|
filp->f_flags & O_NONBLOCK);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* em28xx_v4l2_poll()
|
|
* will allocate buffers when called for the first time
|
|
*/
|
|
static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait)
|
|
{
|
|
struct em28xx_fh *fh = filp->private_data;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (unlikely(res_get(fh) < 0))
|
|
return POLLERR;
|
|
|
|
if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
|
|
return POLLERR;
|
|
|
|
return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
|
|
}
|
|
|
|
/*
|
|
* em28xx_v4l2_mmap()
|
|
*/
|
|
static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
|
|
{
|
|
struct em28xx_fh *fh = filp->private_data;
|
|
struct em28xx *dev = fh->dev;
|
|
int rc;
|
|
|
|
if (unlikely(res_get(fh) < 0))
|
|
return -EBUSY;
|
|
|
|
rc = check_dev(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
|
|
|
|
em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
|
|
(unsigned long)vma->vm_start,
|
|
(unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
|
|
rc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static const struct file_operations em28xx_v4l_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = em28xx_v4l2_open,
|
|
.release = em28xx_v4l2_close,
|
|
.read = em28xx_v4l2_read,
|
|
.poll = em28xx_v4l2_poll,
|
|
.mmap = em28xx_v4l2_mmap,
|
|
.ioctl = video_ioctl2,
|
|
.llseek = no_llseek,
|
|
.compat_ioctl = v4l_compat_ioctl32,
|
|
};
|
|
|
|
static const struct file_operations radio_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = em28xx_v4l2_open,
|
|
.release = em28xx_v4l2_close,
|
|
.ioctl = video_ioctl2,
|
|
.compat_ioctl = v4l_compat_ioctl32,
|
|
.llseek = no_llseek,
|
|
};
|
|
|
|
static const struct video_device em28xx_video_template = {
|
|
.fops = &em28xx_v4l_fops,
|
|
.release = video_device_release,
|
|
|
|
.minor = -1,
|
|
.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_audio = vidioc_g_audio,
|
|
.vidioc_s_audio = vidioc_s_audio,
|
|
.vidioc_cropcap = vidioc_cropcap,
|
|
|
|
.vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
|
|
.vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
|
|
.vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
|
|
|
|
.vidioc_reqbufs = vidioc_reqbufs,
|
|
.vidioc_querybuf = vidioc_querybuf,
|
|
.vidioc_qbuf = vidioc_qbuf,
|
|
.vidioc_dqbuf = vidioc_dqbuf,
|
|
.vidioc_s_std = vidioc_s_std,
|
|
.vidioc_enum_input = vidioc_enum_input,
|
|
.vidioc_g_input = vidioc_g_input,
|
|
.vidioc_s_input = vidioc_s_input,
|
|
.vidioc_queryctrl = vidioc_queryctrl,
|
|
.vidioc_g_ctrl = vidioc_g_ctrl,
|
|
.vidioc_s_ctrl = vidioc_s_ctrl,
|
|
.vidioc_streamon = vidioc_streamon,
|
|
.vidioc_streamoff = vidioc_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,
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.vidioc_g_register = vidioc_g_register,
|
|
.vidioc_s_register = vidioc_s_register,
|
|
#endif
|
|
#ifdef CONFIG_VIDEO_V4L1_COMPAT
|
|
.vidiocgmbuf = vidiocgmbuf,
|
|
#endif
|
|
|
|
.tvnorms = V4L2_STD_ALL,
|
|
.current_norm = V4L2_STD_PAL,
|
|
};
|
|
|
|
static struct video_device em28xx_radio_template = {
|
|
.name = "em28xx-radio",
|
|
.type = VID_TYPE_TUNER,
|
|
.fops = &radio_fops,
|
|
.minor = -1,
|
|
.vidioc_querycap = radio_querycap,
|
|
.vidioc_g_tuner = radio_g_tuner,
|
|
.vidioc_enum_input = radio_enum_input,
|
|
.vidioc_g_audio = radio_g_audio,
|
|
.vidioc_s_tuner = radio_s_tuner,
|
|
.vidioc_s_audio = radio_s_audio,
|
|
.vidioc_s_input = radio_s_input,
|
|
.vidioc_queryctrl = radio_queryctrl,
|
|
.vidioc_g_ctrl = vidioc_g_ctrl,
|
|
.vidioc_s_ctrl = vidioc_s_ctrl,
|
|
.vidioc_g_frequency = vidioc_g_frequency,
|
|
.vidioc_s_frequency = vidioc_s_frequency,
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.vidioc_g_register = vidioc_g_register,
|
|
.vidioc_s_register = vidioc_s_register,
|
|
#endif
|
|
};
|
|
|
|
/******************************** usb interface ******************************/
|
|
|
|
|
|
static LIST_HEAD(em28xx_extension_devlist);
|
|
static DEFINE_MUTEX(em28xx_extension_devlist_lock);
|
|
|
|
int em28xx_register_extension(struct em28xx_ops *ops)
|
|
{
|
|
struct em28xx *dev = NULL;
|
|
|
|
mutex_lock(&em28xx_extension_devlist_lock);
|
|
list_add_tail(&ops->next, &em28xx_extension_devlist);
|
|
list_for_each_entry(dev, &em28xx_devlist, devlist) {
|
|
if (dev)
|
|
ops->init(dev);
|
|
}
|
|
printk(KERN_INFO "Em28xx: Initialized (%s) extension\n", ops->name);
|
|
mutex_unlock(&em28xx_extension_devlist_lock);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(em28xx_register_extension);
|
|
|
|
void em28xx_unregister_extension(struct em28xx_ops *ops)
|
|
{
|
|
struct em28xx *dev = NULL;
|
|
|
|
list_for_each_entry(dev, &em28xx_devlist, devlist) {
|
|
if (dev)
|
|
ops->fini(dev);
|
|
}
|
|
|
|
mutex_lock(&em28xx_extension_devlist_lock);
|
|
printk(KERN_INFO "Em28xx: Removed (%s) extension\n", ops->name);
|
|
list_del(&ops->next);
|
|
mutex_unlock(&em28xx_extension_devlist_lock);
|
|
}
|
|
EXPORT_SYMBOL(em28xx_unregister_extension);
|
|
|
|
static struct video_device *em28xx_vdev_init(struct em28xx *dev,
|
|
const struct video_device *template,
|
|
const int type,
|
|
const char *type_name)
|
|
{
|
|
struct video_device *vfd;
|
|
|
|
vfd = video_device_alloc();
|
|
if (NULL == vfd)
|
|
return NULL;
|
|
*vfd = *template;
|
|
vfd->minor = -1;
|
|
vfd->dev = &dev->udev->dev;
|
|
vfd->release = video_device_release;
|
|
vfd->type = type;
|
|
vfd->debug = video_debug;
|
|
|
|
snprintf(vfd->name, sizeof(vfd->name), "%s %s",
|
|
dev->name, type_name);
|
|
|
|
return vfd;
|
|
}
|
|
|
|
|
|
/*
|
|
* em28xx_init_dev()
|
|
* allocates and inits the device structs, registers i2c bus and v4l device
|
|
*/
|
|
static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
|
|
int minor)
|
|
{
|
|
struct em28xx_ops *ops = NULL;
|
|
struct em28xx *dev = *devhandle;
|
|
int retval = -ENOMEM;
|
|
int errCode;
|
|
unsigned int maxh, maxw;
|
|
|
|
dev->udev = udev;
|
|
mutex_init(&dev->lock);
|
|
spin_lock_init(&dev->slock);
|
|
init_waitqueue_head(&dev->open);
|
|
init_waitqueue_head(&dev->wait_frame);
|
|
init_waitqueue_head(&dev->wait_stream);
|
|
|
|
dev->em28xx_write_regs = em28xx_write_regs;
|
|
dev->em28xx_read_reg = em28xx_read_reg;
|
|
dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len;
|
|
dev->em28xx_write_regs_req = em28xx_write_regs_req;
|
|
dev->em28xx_read_reg_req = em28xx_read_reg_req;
|
|
dev->is_em2800 = em28xx_boards[dev->model].is_em2800;
|
|
|
|
em28xx_pre_card_setup(dev);
|
|
|
|
errCode = em28xx_config(dev);
|
|
if (errCode) {
|
|
em28xx_errdev("error configuring device\n");
|
|
em28xx_devused &= ~(1<<dev->devno);
|
|
kfree(dev);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* register i2c bus */
|
|
em28xx_i2c_register(dev);
|
|
|
|
/* Do board specific init and eeprom reading */
|
|
em28xx_card_setup(dev);
|
|
|
|
/* Configure audio */
|
|
em28xx_audio_analog_set(dev);
|
|
|
|
/* configure the device */
|
|
em28xx_config_i2c(dev);
|
|
|
|
/* set default norm */
|
|
dev->norm = em28xx_video_template.current_norm;
|
|
|
|
maxw = norm_maxw(dev);
|
|
maxh = norm_maxh(dev);
|
|
|
|
/* set default image size */
|
|
dev->width = maxw;
|
|
dev->height = maxh;
|
|
dev->interlaced = EM28XX_INTERLACED_DEFAULT;
|
|
dev->hscale = 0;
|
|
dev->vscale = 0;
|
|
dev->ctl_input = 2;
|
|
|
|
errCode = em28xx_config(dev);
|
|
|
|
list_add_tail(&dev->devlist, &em28xx_devlist);
|
|
|
|
/* allocate and fill video video_device struct */
|
|
dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template,
|
|
VID_TYPE_CAPTURE, "video");
|
|
if (NULL == dev->vdev) {
|
|
em28xx_errdev("cannot allocate video_device.\n");
|
|
goto fail_unreg;
|
|
}
|
|
if (dev->tuner_type != TUNER_ABSENT)
|
|
dev->vdev->type |= VID_TYPE_TUNER;
|
|
|
|
/* register v4l2 video video_device */
|
|
retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
|
|
video_nr[dev->devno]);
|
|
if (retval) {
|
|
em28xx_errdev("unable to register video device (error=%i).\n",
|
|
retval);
|
|
goto fail_unreg;
|
|
}
|
|
|
|
/* Allocate and fill vbi video_device struct */
|
|
dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
|
|
VFL_TYPE_VBI, "vbi");
|
|
/* register v4l2 vbi video_device */
|
|
if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
|
|
vbi_nr[dev->devno]) < 0) {
|
|
em28xx_errdev("unable to register vbi device\n");
|
|
retval = -ENODEV;
|
|
goto fail_unreg;
|
|
}
|
|
|
|
if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
|
|
dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
|
|
VFL_TYPE_RADIO, "radio");
|
|
if (NULL == dev->radio_dev) {
|
|
em28xx_errdev("cannot allocate video_device.\n");
|
|
goto fail_unreg;
|
|
}
|
|
retval = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
|
|
radio_nr[dev->devno]);
|
|
if (retval < 0) {
|
|
em28xx_errdev("can't register radio device\n");
|
|
goto fail_unreg;
|
|
}
|
|
em28xx_info("Registered radio device as /dev/radio%d\n",
|
|
dev->radio_dev->minor & 0x1f);
|
|
}
|
|
|
|
/* init video dma queues */
|
|
INIT_LIST_HEAD(&dev->vidq.active);
|
|
INIT_LIST_HEAD(&dev->vidq.queued);
|
|
|
|
|
|
if (dev->has_msp34xx) {
|
|
/* Send a reset to other chips via gpio */
|
|
em28xx_write_regs_req(dev, 0x00, 0x08, "\xf7", 1);
|
|
msleep(3);
|
|
em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1);
|
|
msleep(3);
|
|
}
|
|
|
|
video_mux(dev, 0);
|
|
|
|
em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
|
|
dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN,
|
|
dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN);
|
|
|
|
mutex_lock(&em28xx_extension_devlist_lock);
|
|
if (!list_empty(&em28xx_extension_devlist)) {
|
|
list_for_each_entry(ops, &em28xx_extension_devlist, next) {
|
|
if (ops->id)
|
|
ops->init(dev);
|
|
}
|
|
}
|
|
mutex_unlock(&em28xx_extension_devlist_lock);
|
|
|
|
return 0;
|
|
|
|
fail_unreg:
|
|
em28xx_release_resources(dev);
|
|
mutex_unlock(&dev->lock);
|
|
kfree(dev);
|
|
return retval;
|
|
}
|
|
|
|
#if defined(CONFIG_MODULES) && defined(MODULE)
|
|
static void request_module_async(struct work_struct *work)
|
|
{
|
|
struct em28xx *dev = container_of(work,
|
|
struct em28xx, request_module_wk);
|
|
|
|
if (dev->has_audio_class)
|
|
request_module("snd-usb-audio");
|
|
else
|
|
request_module("em28xx-alsa");
|
|
|
|
if (dev->has_dvb)
|
|
request_module("em28xx-dvb");
|
|
}
|
|
|
|
static void request_modules(struct em28xx *dev)
|
|
{
|
|
INIT_WORK(&dev->request_module_wk, request_module_async);
|
|
schedule_work(&dev->request_module_wk);
|
|
}
|
|
#else
|
|
#define request_modules(dev)
|
|
#endif /* CONFIG_MODULES */
|
|
|
|
/*
|
|
* em28xx_usb_probe()
|
|
* checks for supported devices
|
|
*/
|
|
static int em28xx_usb_probe(struct usb_interface *interface,
|
|
const struct usb_device_id *id)
|
|
{
|
|
const struct usb_endpoint_descriptor *endpoint;
|
|
struct usb_device *udev;
|
|
struct usb_interface *uif;
|
|
struct em28xx *dev = NULL;
|
|
int retval = -ENODEV;
|
|
int i, nr, ifnum;
|
|
|
|
udev = usb_get_dev(interface_to_usbdev(interface));
|
|
ifnum = interface->altsetting[0].desc.bInterfaceNumber;
|
|
|
|
/* Check to see next free device and mark as used */
|
|
nr = find_first_zero_bit(&em28xx_devused, EM28XX_MAXBOARDS);
|
|
em28xx_devused |= 1<<nr;
|
|
|
|
/* Don't register audio interfaces */
|
|
if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
|
|
em28xx_err(DRIVER_NAME " audio device (%04x:%04x): interface %i, class %i\n",
|
|
udev->descriptor.idVendor,
|
|
udev->descriptor.idProduct,
|
|
ifnum,
|
|
interface->altsetting[0].desc.bInterfaceClass);
|
|
|
|
em28xx_devused &= ~(1<<nr);
|
|
return -ENODEV;
|
|
}
|
|
|
|
em28xx_err(DRIVER_NAME " new video device (%04x:%04x): interface %i, class %i\n",
|
|
udev->descriptor.idVendor,
|
|
udev->descriptor.idProduct,
|
|
ifnum,
|
|
interface->altsetting[0].desc.bInterfaceClass);
|
|
|
|
endpoint = &interface->cur_altsetting->endpoint[1].desc;
|
|
|
|
/* check if the device has the iso in endpoint at the correct place */
|
|
if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
|
|
USB_ENDPOINT_XFER_ISOC) {
|
|
em28xx_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n");
|
|
em28xx_devused &= ~(1<<nr);
|
|
return -ENODEV;
|
|
}
|
|
if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
|
|
em28xx_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n");
|
|
em28xx_devused &= ~(1<<nr);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (nr >= EM28XX_MAXBOARDS) {
|
|
printk(DRIVER_NAME ": Supports only %i em28xx boards.\n",
|
|
EM28XX_MAXBOARDS);
|
|
em28xx_devused &= ~(1<<nr);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* allocate memory for our device state and initialize it */
|
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
|
if (dev == NULL) {
|
|
em28xx_err(DRIVER_NAME ": out of memory!\n");
|
|
em28xx_devused &= ~(1<<nr);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
snprintf(dev->name, 29, "em28xx #%d", nr);
|
|
dev->devno = nr;
|
|
dev->model = id->driver_info;
|
|
dev->alt = -1;
|
|
|
|
/* Checks if audio is provided by some interface */
|
|
for (i = 0; i < udev->config->desc.bNumInterfaces; i++) {
|
|
uif = udev->config->interface[i];
|
|
if (uif->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
|
|
dev->has_audio_class = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
printk(KERN_INFO DRIVER_NAME " %s usb audio class\n",
|
|
dev->has_audio_class ? "Has" : "Doesn't have");
|
|
|
|
/* compute alternate max packet sizes */
|
|
uif = udev->actconfig->interface[0];
|
|
|
|
dev->num_alt = uif->num_altsetting;
|
|
em28xx_info("Alternate settings: %i\n", dev->num_alt);
|
|
/* dev->alt_max_pkt_size = kmalloc(sizeof(*dev->alt_max_pkt_size)* */
|
|
dev->alt_max_pkt_size = kmalloc(32 * dev->num_alt, GFP_KERNEL);
|
|
|
|
if (dev->alt_max_pkt_size == NULL) {
|
|
em28xx_errdev("out of memory!\n");
|
|
em28xx_devused &= ~(1<<nr);
|
|
kfree(dev);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
for (i = 0; i < dev->num_alt ; i++) {
|
|
u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
|
|
wMaxPacketSize);
|
|
dev->alt_max_pkt_size[i] =
|
|
(tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
|
|
em28xx_info("Alternate setting %i, max size= %i\n", i,
|
|
dev->alt_max_pkt_size[i]);
|
|
}
|
|
|
|
if ((card[nr] >= 0) && (card[nr] < em28xx_bcount))
|
|
dev->model = card[nr];
|
|
|
|
/* allocate device struct */
|
|
retval = em28xx_init_dev(&dev, udev, nr);
|
|
if (retval)
|
|
return retval;
|
|
|
|
em28xx_info("Found %s\n", em28xx_boards[dev->model].name);
|
|
|
|
/* save our data pointer in this interface device */
|
|
usb_set_intfdata(interface, dev);
|
|
|
|
request_modules(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* em28xx_usb_disconnect()
|
|
* called when the device gets diconencted
|
|
* video device will be unregistered on v4l2_close in case it is still open
|
|
*/
|
|
static void em28xx_usb_disconnect(struct usb_interface *interface)
|
|
{
|
|
struct em28xx *dev;
|
|
struct em28xx_ops *ops = NULL;
|
|
|
|
dev = usb_get_intfdata(interface);
|
|
usb_set_intfdata(interface, NULL);
|
|
|
|
if (!dev)
|
|
return;
|
|
|
|
em28xx_info("disconnecting %s\n", dev->vdev->name);
|
|
|
|
/* wait until all current v4l2 io is finished then deallocate
|
|
resources */
|
|
mutex_lock(&dev->lock);
|
|
|
|
wake_up_interruptible_all(&dev->open);
|
|
|
|
if (dev->users) {
|
|
em28xx_warn
|
|
("device /dev/video%d is open! Deregistration and memory "
|
|
"deallocation are deferred on close.\n",
|
|
dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN);
|
|
|
|
dev->state |= DEV_MISCONFIGURED;
|
|
em28xx_uninit_isoc(dev);
|
|
dev->state |= DEV_DISCONNECTED;
|
|
wake_up_interruptible(&dev->wait_frame);
|
|
wake_up_interruptible(&dev->wait_stream);
|
|
} else {
|
|
dev->state |= DEV_DISCONNECTED;
|
|
em28xx_release_resources(dev);
|
|
}
|
|
mutex_unlock(&dev->lock);
|
|
|
|
mutex_lock(&em28xx_extension_devlist_lock);
|
|
if (!list_empty(&em28xx_extension_devlist)) {
|
|
list_for_each_entry(ops, &em28xx_extension_devlist, next) {
|
|
ops->fini(dev);
|
|
}
|
|
}
|
|
mutex_unlock(&em28xx_extension_devlist_lock);
|
|
|
|
if (!dev->users) {
|
|
kfree(dev->alt_max_pkt_size);
|
|
kfree(dev);
|
|
}
|
|
}
|
|
|
|
static struct usb_driver em28xx_usb_driver = {
|
|
.name = "em28xx",
|
|
.probe = em28xx_usb_probe,
|
|
.disconnect = em28xx_usb_disconnect,
|
|
.id_table = em28xx_id_table,
|
|
};
|
|
|
|
static int __init em28xx_module_init(void)
|
|
{
|
|
int result;
|
|
|
|
printk(KERN_INFO DRIVER_NAME " v4l2 driver version %d.%d.%d loaded\n",
|
|
(EM28XX_VERSION_CODE >> 16) & 0xff,
|
|
(EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
|
|
#ifdef SNAPSHOT
|
|
printk(KERN_INFO DRIVER_NAME " snapshot date %04d-%02d-%02d\n",
|
|
SNAPSHOT / 10000, (SNAPSHOT / 100) % 100, SNAPSHOT % 100);
|
|
#endif
|
|
|
|
/* register this driver with the USB subsystem */
|
|
result = usb_register(&em28xx_usb_driver);
|
|
if (result)
|
|
em28xx_err(DRIVER_NAME
|
|
" usb_register failed. Error number %d.\n", result);
|
|
|
|
return result;
|
|
}
|
|
|
|
static void __exit em28xx_module_exit(void)
|
|
{
|
|
/* deregister this driver with the USB subsystem */
|
|
usb_deregister(&em28xx_usb_driver);
|
|
}
|
|
|
|
module_init(em28xx_module_init);
|
|
module_exit(em28xx_module_exit);
|